Sunrise Communications (OTC: SNNRF) boosts free cash flow

Rhea-AI Filing Summary

Sunrise Communications AG (SNNRF) reported slightly lower revenue and continued net losses for the three and six months ended 30 June 2026, while generating stronger cash flow and maintaining leverage at a largely fixed, long-dated cost.

Revenue fell to CHF 712.9 million in Q2 2026, down 2.6% year-on-year, and to CHF 1,435.7 million for H1, down 1.2%, mainly from declining residential fixed and mobile revenue partly offset by growth in business and wholesale. Q2 net loss narrowed to CHF 22.4 million from CHF 53.6 million, but H1 net loss widened modestly to CHF 61.8 million. Adjusted EBITDAaL remained broadly stable at CHF 244.4 million in Q2 (down 3.8%) and CHF 490.3 million in H1 (down 0.8%), with margins around 34%.

Cash generation improved: H1 net cash from operating activities was CHF 467.1 million, with H1 Adjusted Free Cash Flow rising to CHF 85.9 million from CHF 16.8 million, helped by sharply lower cash capital expenditures of CHF 128.3 million. Sunrise reported consolidated third-party debt of about CHF 4.5 billion with a weighted-average cost of roughly 2.7%, mostly maturing between 2029 and 2032, and stated it was in compliance with debt covenants.

Positive

• Adjusted Free Cash Flow surged to CHF 85.9 million in H1 2026 from CHF 16.8 million, supported by higher operating cash flow and significantly lower cash capital expenditures.
• Operating income improved to CHF 32.2 million in Q2 2026 and CHF 45.6 million in H1, up 27.8% and 20.3% year-on-year, respectively.
• Debt maturity profile extended, with about CHF 4.5 billion of debt largely fixed or economically hedged and mainly maturing between 2029 and 2032, reducing near‑term refinancing pressure.
• Business Customers & Wholesale revenue grew by 2.4% in H1 and 0.5% in Q2 2026, with Adjusted EBITDAaL increasing in both periods.

Negative

• Company remains loss-making, with H1 2026 net loss of CHF 61.8 million (net loss margin 4.3%) compared to CHF 54.9 million a year earlier.
• Revenue declined, with Q2 2026 revenue down 2.6% and H1 revenue down 1.2% year-on-year, driven by residential segment weakness.
• High leverage persists, as third-party debt including accrued interest totaled about CHF 4.5 billion at 30 June 2026 against cash of CHF 99.8 million.
• Equity decreased to CHF 3,770.8 million from CHF 4,075.7 million at year-end 2025, reflecting net losses and capital repayments.

Key Figures

Q2 2026 Revenue: CHF 712.9 million H1 2026 Net Loss: CHF 61.8 million Q2 2026 Adjusted EBITDAaL: CHF 244.4 million +5 more

8 metrics

Q2 2026 Revenue CHF 712.9 million Three months ended 30 June 2026; down 2.6% from CHF 731.6 million in Q2 2025

H1 2026 Net Loss CHF 61.8 million Six months ended 30 June 2026; net loss margin (4.3%)

Q2 2026 Adjusted EBITDAaL CHF 244.4 million Three months ended 30 June 2026; down 3.8% from CHF 254.1 million

H1 2026 Adjusted Free Cash Flow CHF 85.9 million Six months ended 30 June 2026; up from CHF 16.8 million in H1 2025

Net Cash from Operating Activities H1 2026 CHF 467.1 million Six months ended 30 June 2026; slightly above CHF 461.6 million in prior year

Third-Party Debt Outstanding CHF 4.5 billion Debt including accrued interest as of 30 June 2026, with ~2.7% weighted-average cost

Cash and Cash Equivalents CHF 99.8 million Balance as of 30 June 2026 on the consolidated statement of financial position

H1 2026 Capital Expenditures (cash flow) CHF 128.3 million Capital expenditures in the cash-flow statement for six months ended 30 June 2026

Key Terms

Adjusted EBITDAaL, Adjusted Free Cash Flow, Fixed-mobile convergence, vendor financing, +1 more

5 terms

Adjusted EBITDAaL financial

"Adjusted EBITDAaL is the primary measure used by the Sunrise chief operating decision maker"

Adjusted Free Cash Flow financial

"Adjusted Free Cash Flow is defined as net cash provided by operating activities plus"

Adjusted free cash flow is the amount of money a company generates from its operations after accounting for essential expenses and investments, like maintaining or upgrading equipment. It shows how much cash is truly available to grow the business, pay debts, or return to shareholders, helping investors see the company's financial health more clearly.

Fixed-mobile convergence technical

"Fixed-mobile convergence penetration represents the number of customers who subscribe to both a fixed"

vendor financing financial

"vendor financing additions represent operating-related expenses financed by an intermediary"

Vendor financing is when a seller loans money or lets a buyer pay over time so the buyer can purchase the seller’s goods or services, like a store offering you a payment plan instead of requiring full cash up front. For investors, it matters because it can boost sales and help win customers but also shifts credit risk to the seller and can affect reported revenue, cash flow and the quality of the company’s assets on the balance sheet.

cross-currency swap financial

"Includes the principal-related cash flows of cross-currency swap contracts"

A cross-currency swap is a contract where two parties exchange loan payments in different currencies — typically swapping both principal and interest at the start and end — so each party effectively borrows in the other’s currency. For investors, these swaps matter because they change a company’s actual currency exposure and borrowing costs, affecting cash flow predictability, balance-sheet risk and the way foreign earnings translate into reported results, similar to rearranging which currency a loan is paid in.

FAQ

How did Sunrise Communications AG (SNNRF) perform financially in Q2 2026?

Sunrise reported Q2 2026 revenue of CHF 712.9 million, down 2.6% year-on-year, and a net loss of CHF 22.4 million, improved from CHF 53.6 million in Q2 2025. Adjusted EBITDAaL was CHF 244.4 million, a decline of 3.8% with a 34.3% margin.

What were Sunrise Communications AG (SNNRF)’s H1 2026 revenue and profitability?

For H1 2026, Sunrise generated revenue of CHF 1,435.7 million, down 1.2% from H1 2025. The company recorded a net loss of CHF 61.8 million and Adjusted EBITDAaL of CHF 490.3 million with a 34.2% margin, slightly below the prior year.

How strong was Sunrise Communications AG (SNNRF)’s cash flow in H1 2026?

H1 2026 net cash from operating activities was CHF 467.1 million, marginally above H1 2025. Adjusted Free Cash Flow increased sharply to CHF 85.9 million from CHF 16.8 million, mainly due to significantly reduced cash capital expenditures.

What is Sunrise Communications AG (SNNRF)’s current debt and interest cost profile?

As of 30 June 2026, Sunrise reported third-party debt plus accrued interest of about CHF 4.5 billion at a weighted-average cost of approximately 2.7% after hedges. Most maturities fall between 2029 and 2032, and the company reported covenant compliance.

How did Sunrise Communications AG (SNNRF)’s capital expenditures change in H1 2026?

Sunrise’s property, plant and equipment and intangible additions were CHF 235.2 million in H1 2026, 16.4% of revenue. Cash capital expenditures in the cash flow statement fell to CHF 128.3 million from CHF 273.9 million, contributing to higher free cash flow.

Which segments drove Sunrise Communications AG (SNNRF)’s 2026 performance?

In H1 2026, Residential Customers revenue fell 2.8% to CHF 1,012.7 million, while Business Customers & Wholesale revenue rose 2.4% to CHF 418.5 million. Residential Adjusted EBITDAaL declined, whereas Business Customers & Wholesale Adjusted EBITDAaL increased.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 6-K: How Foreign Companies Report to the SEC →

Available on EDGAR 08/19/2026 - 04:06 PM Accepted by SEC EDGAR 08/19/2026 - 04:05 PM Learn about SEC filing dates

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of August, 2026

Commission File Number: 001-42394

Sunrise Communications AG

(Exact name of registrant as specified in its charter)

Thurgauerstrasse 101b

8152 Glattpark (Opfikon), Switzerland

Tel: +41 58 777 76 66

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F ☒   Form 40-F ☐

Sunrise Communications AG (the “Company”) is furnishing this Form 6-K to provide three month interim financial statements and incorporate such financial statements into the Company’s registration statements referenced below.

The information set forth in this Form 6-K (excluding Exhibit 99.1) is hereby incorporated by reference into the registration statements of the Company on Form S-8 (Registration No. 333-283098 and No. 333-283426), to the extent not superseded by documents or reports subsequently filed or furnished by the Company under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

SUNRISE COMMUNICATIONS AG
By:		/s/ Marcel Huber
		Name:		Marcel Huber
		Title:		General Counsel and Corporate Affairs Officer of Sunrise Communications AG

Date: August 19, 2026

EXHIBIT

Exhibit		Description of Exhibit
99.1		News Release dated August 19, 2026
99.2		Second Quarter 2026 Interim Financial Results

Exhibit 99.1

Ad hoc announcement pursuant to Article 53 LR

Opfikon, Switzerland, 19 August 2026 – 07:00 CEST

Q2 revenue moderate as expected, commercial momentum strengthened, 2026 guidance confirmed

• Strong commercial momentum in the second quarter with net increase of +21,000 mobile postpaid¹ subscriptions and best Internet² net adds in five quarters with growth of +3,000 Internet² subscriptions. Supported by drivers such as strong portfolios and the extensively marketed and expanded Sunrise Rewards programme with strategic focus on existing customers.

• Q2 financial results moderate as expected and impacted by temporary comparative effects from phased price increases in 2025 versus 2026, and by the cumulative effect of weaker subscriber growth in previous quarters.

• Adjusted EBITDAaL³ less P&E Additions (CAPEX⁴) increased +3.7% YoY in Q2; Adjusted Free Cash Flow^3,5 improved significantly by +33.3% YoY – supported by lower P&E Additions (CAPEX⁴) and operating cost discipline. This was despite a decrease in revenue (-2.6% YoY) and in Adjusted EBITDAaL (-3.8% YoY).

• The net loss decreased significantly (by 58.2%), while net cash flow from operating activities increased (+26.4%) and capital expenditure as disclosed in the cash-flow statement⁶ decreased (-72.6%).

• Based on the strengthened commercial momentum, the effective implementation of the price increase in Q3 and important and successful B2C and B2B product launches alongside continued cost discipline, Sunrise fully confirms its financial guidance 2026⁷, including the expected dividend for the 2026 financial year⁸ of CHF 3.49 per Class A Share and CHF 0.35 per Class B Share in 2027, representing dividend growth of over +2% YoY.

Consolidated results for Q2 2026

(CHF million)		Q2 2025				Q2 2026				Change
Revenue			731.6				712.9				(2.6	%)
Residential customers			521.3				499.5				(4.2	%)
Business customers and wholesale			208.0				209.0				0.5	%
Infrastructure and support functions			2.3				4.4				91.3	%
Adjusted EBITDAaL3			254.1				244.4				(3.8	%)
P&E Additions (CAPEX4)			(116.4	)			(101.6	)			(12.7	%)
Adjusted EBITDAaL3 less P&E Additions (CAPEX4)			137.7				142.8				3.7	%
Adjusted FCF3,5			153.3				204.4				33.3	%
As reported:
Net loss			(53.6	)			(22.4	)			58.2	%
Net cash provided by operating activities			290.5				367.3				26.4	%
Capital expenditures in the cash-flow statement6			(165.9	)			(45.5	)			(72.6	%)

Note: The key financial figures are presented on a rebased IFRS basis. Alternative definitions of key performance indicators and reconciliations can be found in the appendix to this ad hoc announcement.

1/6

«Revenue was more moderate in the second quarter, as expected, due to the impact of differently timed price increases. At the same time, we’ve significantly improved new customer acquisition. With our increased focus on existing customers, we’re targeting future growth and have specifically designed Sunrise Rewards to strengthen customer loyalty, reduce churn and foster long-term customer relationships. We’ve also continued to improve our operational efficiency across the board, which is clearly reflected in the increase in Free Cash Flow. We’re driving forward the implementation of our strategy at pace and we’re confirming our 2026 guidance, including our targeted dividend growth of more than 2%», commented André Krause, CEO of Sunrise, on the Q2 2026 results.

Strong customer growth

Sunrise increased its net customer growth in Q2 2026, achieving growth of +21,000 RGUs (revenue-generating units) in the mobile postpaid¹ segment and +3,000 RGUs in the broadband Internet² segment. Growth was supported by increased customer loyalty in the main brand Sunrise, by new-customer business in the business-customer segment and by customer acquisitions in the flanker brands.

The proportion of broadband customers using a Sunrise mobile postpaid subscription continued to grow. This fixed-mobile convergence rate (FMC⁹) increased by +2.6 percentage points YoY to 61.1%. As of 30 June 2026, Sunrise had around 3.18 million mobile, 1.29 million broadband Internet and 0.96 million enhanced TV RGUs.

Focus on existing customers and new offers strengthen commercial momentum

Positive commercial momentum in RGU growth was supported by increased customer loyalty in the main brand Sunrise. The momentum’s drivers include the enhanced Sunrise Rewards programme, which was widely marketed in Q2, continuing positive development in the broadband business, strong device sales volumes thanks to the popular Device as a Service programme and in the TV business thanks to streaming-service offers. The expanded B2B offering for SMEs (e.g., SME Ready Insurance) and new segment-specific offers from the flanker brands also supported this development.

Based on innovations already initiated in Q2 (e.g., cloud and AI ecosystem) and product launches (e.g., in the device area), the consistent focus on existing customers, including the ongoing expansion of the Sunrise Rewards programme, and the targeted activation and strengthening of selected sales activities in B2B, Sunrise continues to expect positive momentum in the second half of the year.

With the new appointments to the Executive Committee, Sunrise is continuing the consistent implementation of its strategy.

Moderate Q2 financial result influenced by comparative effects

Revenue declined by -2.6% YoY in Q2 2026 because the effect of the price adjustment in 2025 for mobile and broadband subscriptions fell away, while weaker customer growth in previous quarters also had an impact. Part of this effect was offset, however, by a positive contribution from revenues and income outside the traditional subscription business, such as higher service fees and stable handset sales, stable B2B and wholesale revenue and increased revenue in infrastructure and support functions.

The decline in revenue and its underlying effects impacted Adjusted EBITDAaL³, which decreased by -3.8% YoY in Q2 2026. Adjusted EBITDAaL³ was supported by the further optimised operating cost base. Lower spending on IT and external services led to a reduction in operating expenses (OPEX) compared with the previous year. Targeted optimisations also generated further savings in lease costs.

P&E Additions (CAPEX⁴) amounted to 14.3% of revenue in Q2 2026 and decreased by -12.7% YoY. This was primarily due to lower spending on network capacity expansions and different phasing of network expansion investments, as well as by a normalisation of B2B expenditures, which were higher in Q2 2025 due to costs for onboarding large customers. As a result, Adjusted EBITDAaL³ less P&E Additions (CAPEX⁴) increased +3.7% YoY.

2/6

Adjusted Free Cash Flow (FCF^3,5) increased strongly in Q2 2026, by +33.3% YoY. This seasonal increase was driven, among other factors, by lower supplier payments and more efficient working-capital management, which particularly supports the second and fourth quarters. The improvement in Adjusted Free Cash Flow^3,5 compared with the previous year confirms the guidance for the financial year 2026.

The reduction in the net loss compared with the prior-year period of 58.2% was primarily attributable to changes in financial income and expenses resulting from foreign-currency gains and losses. At the same time, supported by favourable working-capital development, lower supplier payments and disciplined cash management, net cash provided by operating activities increased by +26.4%, while capital expenditures in the cash-flow statement⁶ decreased by -72.6%.

Consolidated results for H1 2026

(CHF million)		H1 2025				H1 2026				Change
Revenue			1,453.7				1,435.7				(1.2	%)
Residential customers			1,041.6				1,012.7				(2.8	%)
Business customers and wholesale			408.8				418.5				2.4	%
Infrastructure and support functions			3.3				4.5				36.4	%
Adjusted EBITDAaL3			494.1				490.3				(0.8	%)
P&E Additions (CAPEX4)			(259.5	)			(235.2	)			(9.4	%)
Adjusted EBITDAaL3 less P&E Additions (CAPEX4)			234.6				255.1				8.7	%
Adjusted FCF3,5			36.8				93.4				153.8	%
As reported:
Net loss			(54.9	)			(61.8	)			(12.6	%)
Net cash provided by operating activities			461.6				467.1				1.2	%
Capital expenditures in the cash-flow statement6			(273.9	)			(128.3	)			(53.2	%)

Note: The key financial figures are presented on a rebased IFRS basis. Alternative definitions of key performance indicators and reconciliations can be found in the appendix of this ad hoc announcement.

Financial guidance for 2026 reconfirmed

Based on the positive commercial response to the existing- and new-customer offerings, the strengthened focus on existing customers, the expected normalisation of the comparative effects arising from the phasing of the price increases, the effective implementation of the price increases and the continuing improvements in cost efficiency, Sunrise fully reconfirms its financial guidance for 2026⁸ as follows:

• Revenue: broadly stable

• Adjusted EBITDAaL³: around CHF 1 billion

• Capital expenditure (CAPEX⁴)/revenue: <15%

• Adjusted FCF^3,5: CHF 380 – 400 million

• Expected dividend for the 2026 financial year⁸: CHF 3.49 per Class A Share and CHF 0.35 per Class B Share in 2027, in line with the targeted progressive dividend policy (+>2% YoY).

The expected dividend for the 2026 financial year will be paid exclusively from reserves from foreign capital contributions and will therefore be treated as a repayment of qualifying additional paid-in capital for Swiss tax purposes. Accordingly, the expected dividend for the 2026 financial year will not be subject to the 35% Swiss withholding tax. For individuals resident in Switzerland who hold the shares as private assets, the dividend is also generally not subject to Swiss income tax. Sunrise expects this tax treatment to continue to apply to dividends in the medium-term future.

Note: The key financial figures and growth rates are presented on an adjusted (IFRS) basis. Alternative definitions of key performance indicators and reconciliations can be found in the appendix of this ad hoc announcement.

3/6

¹  Net additions of residential customers and B2B.

²  Organic net adds of 0k in Q2 2025 and (7k) in Q3 2025, (2k) in Q4 2025, excluding removal of (2k), (3k), (1k), as per factsheet disclosure. In Q2/Q3 the removal was part of the Interbrand Migrations, whereas the Q4 correction related to a technical clean-up of legacy ADSL lines identified in January 2026 with no underlying customers, billing or revenues. It has been adjusted in Q4 2025 to maintain comparability of organic trends. Factsheet includes c.2k non-organic Internet net adds in Q2 2026 from the correction of missing Q4 2025 additions.

³  Quantitative reconciliations to net income/loss (including net income/loss growth rates) and to cash flow from operating activities for the Adjusted EBITDA, Adjusted EBITDAaL and Adjusted FCF forecasts cannot be provided without undue effort, as neither (i) certain non-cash expenses and income, including components of non-operating income/expenses, depreciation and amortisation, and impairment losses, restructuring and other operating items included in net income/loss from continuing operations, nor (ii) specific changes in working capital affecting cash flow from operating activities, are forecast. The items that Sunrise does not forecast may vary significantly from period to period, subject to unforeseen events.

⁴  Excluding finance-lease additions from rental expenses, ice-hockey rights and M&A activity.

⁵  In Q4 2024, Sunrise reached a settlement with the Canton Zurich tax authority regarding a tax audit for years 2019 to 2021 performed during 2024. The final settlement figure agreed covered fiscal years 2019 to 2024 and amounted to approximately CHF 60m. As a result, Sunrise has recognised significant prior year taxes in the current period, which have been cash settled via amended returns on a cantonal basis largely during 2025, with diminishing phasing over the years 2026 and 2027. Adj. FCF excludes the tax-settlement-related charge and it is not included in the FY 2026 Guidance due to pre-funding of the tax settlement by Liberty Global.

⁶  Capital expenditure as part of the net outflow of cash for investing activities («Capital expenditure in cash flows from investing activities»).

⁷  IFRS, on an adjusted basis.

⁸  To be proposed by the Board of Directors of Sunrise upon achieving the financial guidance for the 2026 financial year and subject to approval by the Annual General Meeting.

⁹  Fixed-mobile convergence indicates the number of residential customers who have subscribed to both a fixed-line broadband Internet service and a postpaid mobile service, divided by the total number of customers who have subscribed to at least one fixed-line broadband Internet service.

The investor presentation can be found on the Sunrise Investor Relations website. The live conference call and webcast for analysts and investors will begin at 10:00 CEST.

Sunrise Investor Relations
Alex Herrmann +41 58 777 61 00
investor.relations@sunrise.net Sunrise Media Relations 0800 333 000
media@sunrise.net

ABOUT SUNRISE

Sunrise Communications AG («Sunrise»), with its strong number-two position, is the leading challenger in the Swiss telecoms market and is listed on the SIX Swiss Exchange (SUNN).

With the most comprehensive fixed-line access and a world-class mobile network, Sunrise offers the highest gigabit coverage in Switzerland, stands out through premium quality and is optimally positioned for growth. Leveraging its best-in-class, future-proof networks, Sunrise provides residential customers with high-quality mobile, fixed-line, broadband and TV services, and supports business customers from a one-stop shop with 360° communications and integrated ICT solutions for connectivity, security and IoT, thereby accelerating their digitalisation.

As of the end of June 2026, the Sunrise customer base included around 3.18 million mobile, 1.29 million broadband and 0.96 million TV customers (RGUs), as well as thousands of companies as business customers.

Sunrise fosters a dynamic and international environment where every voice is heard, perspectives are shared and values are respected. Sunrise firmly believes that equal opportunities for a diverse workforce are critical to the company’s success. Around 2,900 employees (FTE) from roughly 80 nations contribute to the success of Sunrise with their expertise, innovative thinking and exceptional commitment – reflecting the diversity of our customers. www.sunrise.ch

Forward-looking statements

This ad hoc announcement contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including projected financial and operating data, such as Sunrise’s outlook for 2026, as well as expectations regarding 2026 guidance and dividend growth, subject to financial performance, legal and regulatory constraints, and Board and shareholder approvals, Sunrise’s financial position, operating results, business activities, market share, the network, service revenue, Adjusted EBITDAaL, investments, the expected generation of Adjusted Free Cash Flow, its timing and intended use, expectations regarding mobile postpaid and Internet subscriptions, Sunrise’s growth and other strategies, future growth prospects and anticipated measures to achieve growth, including the B2B strategy, Sunrise’s expectations, plans and opportunities, including, amongst other things, those relating to new product and service offerings, capital expenditure levels and phasing, cost optimization initiatives, artificial intelligence-related products, services and partnerships, which remain subject to technological development and customer adoption and the associated expected timeframe and potential benefits thereof, expectations regarding net customer growth, ongoing operational efficiency improvements, the macroeconomic environment, expectations and potential increases in future dividends, the costs and terms of Sunrise’s liabilities to third parties, as well as other information and statements that are not historical facts.

These forward-looking statements are based on current expectations, estimates and projections of factors affecting Sunrise’s future performance and are subject to significant risks and uncertainties, some of which are beyond Sunrise’s control. This could result in actual results differing materially from those expressed or implied by these statements. These risks and uncertainties include, among other things, future market conditions, currency fluctuations, Sunrise’s indebtedness and the potential effect on its ability to execute its business strategy, customer churn and its impact on its revenues and cash flow, as well as other factors, such as detailed filings with the US Securities and Exchange Commission (SEC), including most recently the Form 20-F filed by Sunrise and related subsequent reports.

These forward-looking statements are valid only at the time of publication of this document. Statements regarding the future are based on expectations which, in Sunrise’s view, are founded on reasonable assumptions. However, there is no guarantee that these expectations will actually be realised. Even if expectations need to be adjusted due to new events, conditions or circumstances, Sunrise is under no obligation to update or revise these forward-looking statements. It should be noted that undue reliance should not be placed on forward-looking statements.

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Appendix to the ad hoc announcement pursuant to Article 53 LR

Non-IFRS Financial Measures

This ad-hoc announcement includes financial measures that are not presented in accordance with International Financial Reporting Standards (IFRS), including Adjusted EBITDA, Adjusted EBITDAaL, Adjusted EBITDAaL less P&E Additions and Adjusted FCF.

Sunrise believes that Adjusted EBITDA and Adjusted EBITDAaL are meaningful measures because they provide a transparent view of Sunrise’s recurring operating performance, which is unaffected by its capital structure, and allow management to (a) readily identify operating trends, (b) perform analytical comparisons and benchmarking between segments, and (c) identify strategies to improve operating performance.

Sunrise also believes that Adjusted EBITDA and Adjusted EBITDAaL are useful to investors because they provide a basis for comparing Sunrise’s performance with that of other companies in the same or similar industries.

Reconciliation of non-IFRS financial measures

Net income (loss) – Adjusted EBITDAaL (CHF million)		Q2 2025				Q2 2026				H1 2025				H1 2026
Net income (loss)			(53.6	)			(22.4	)			(54.9	)			(61.8	)
Income tax expense (income)			(15.8	)			(2.9	)			(12.0	)			(13.6	)
Share of losses (gains) of affiliates			(3.0	)			—				(4.1	)			(2.0	)
Net financial expense (income)			97.6				57.5				108.9				123.0
Operating income (loss)			25.2				32.2				37.9				45.6
Depreciation and amortisation (non-lease-related)			222.8				217.8				456.2				431.8
Depreciation of right-of-use assets			32.1				31.2				65.0				61.9
Share-based compensation expense			16.2				8.6				23.5				14.4
Impairments, restructuring and other operating items			5.1				1.0				7.1				28.5
Adjusted EBITDA (as reported)			301.4				290.7				589.7				582.1
Lease-related expenses			(47.3	)			(46.3	)			(95.6	)			(91.8	)
Adjusted EBITDAaL (as reported)			254.1				244.4				494.1				490.3
Rebase adjustment: Pro forma transaction costs(1)			—				—				—				—
Adjusted EBITDAaL (rebased)			254.1				244.4				494.1				490.3
Net cash provided by operating activities – Adjusted FCF (CHF million)		Q2 2025				Q2 2026				H1 2025				H1 2026
Net cash provided by operating activities			290.5				367.3				461.6				467.1
Interest paid			(32.9	)			(18.7	)			(135.9	)			(143.5	)
Interest-related derivative receipts (payments)			15.6				—				5.4				30.7
Vendor financing additions			97.6				52.6				188.4				138.8
Capital expenditure			(165.9	)			(45.5	)			(273.9	)			(128.3	)
Principal payments on vendor financing			(41.2	)			(132.2	)			(174.2	)			(219.7	)
Payments of lease liabilities			(19.4	)			(20.0	)			(54.7	)			(59.2	)
Adjusted Free Cash Flow (as reported)			144.5				203.5				16.8				85.9
Rebase adjustment: Pro forma transaction costs(1)			—				—				—				—
Rebase adjustment: Tax audit(2)			8.8				0.9				20.0				7.5
Adjusted Free Cash Flow (rebased)			153.3				204.4				36.8				93.4

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Capital expenditure – P&E Additions (CAPEX) (CHF million)		Q2 2025				Q2 2026				H1 2025				H1 2026
Capital expenditure			165.9				45.5				273.9				128.3
Mergers and acquisitions (asset deals)			(3.0	)			—				(3.0	)			—
Recognition of sport-broadcasting rights			—				—				—				—
Assets acquired under vendor financing			16.5				64.8				31.9				120.1
Changes in current liabilities relating to capital expenditure (including related-party amounts)			(63.0	)			(8.7	)			(43.3	)			(13.2	)
P&E Additions (CAPEX)			116.4				101.6				259.5				235.2

(1) Represents certain one-time Sunrise spin-off-related costs during 2024. The above adjustment reverses the effect of these one-time costs and normalises the effect of the incremental costs so as not to impact the underlying growth rates of the business for this non-organic impact.

(2) In Q4 2024, Sunrise reached a settlement with the Canton Zurich tax authority regarding a tax audit for years 2019 to 2021 performed during 2024. The final settlement figure agreed covered fiscal years 2019 to 2024 and amounted to approximately CHF 60m. As a result, Sunrise has recognised significant prior-year taxes in the current period, which were largely cash settled via amended returns on a cantonal basis in 2025, which will lead to reduced payments in years 2026 and 2027.

6/6

Exhibit 99.2

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Table of Contents Financial Review 3 Consolidated Statements 26 Consolidated Statements of Comprehensive Income (Loss) 27 Consolidated Statements of Financial Position 28 Consolidated Statements of Changes in Equity 31 Consolidated Statements of Cash Flows 32 Notes to the Consolidated Statements 34 (1) General Information 34 (2) Basis of Preparation 35 (3) Accounting Policies 35 (4) Segment Reporting 36 (5) Revenue from Customers 41 (6) Other Operating Income and Expenses 44 (7) Earnings per Share 45 (8) Other Operating Assets and Liabilities 47 (9) Commitments and Contingencies 49 (10) Borrowings 49 (11) Financial Income and Expenses 54 (12) Fair Value Estimation 55 (13) Events after the Balance Sheet Date 57 2 Q2 Financial Results 2026 I Table of Contents

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements as applicable. Revenues for each of the periods presented fluctuates based on the size of the business-customer’s Financial Review were affected by decreases in the subscriber base resulting employee base, rather than changes to the Sunrise service from expected integration challenges associated with prices. Accordingly, in business services, in addition to the migrating legacy UPC customers in the residential segment ability to maintain and expand its customer base and cross- Comparability of future results to the Sunrise brand following the Sunrise-UPC transaction, sell additional services, Sunrise revenues depend on its The following financial review, which should be read in as well as lower ARPU resulting from migration of such UPC ability to price its services effectively. Going forward, Sunrise conjunction with the Sunrise Interim Consolidated Financial customers from the higher-priced UPC platform to the is further focused on leveraging synergies with residential Statements included in this report, reflects the Sunrise Sunrise brand. Sunrise believes that such challenges have subscribers to acquire small business customers (nine or now been substantially resolved, which it believes should fewer employees), growing market share among small- results for the periods ended 30 June 2026 and 2025. enable Sunrise to stabilise and grow the Sunrise brand medium business customers (10 to 249 employees), revenues in the residential segment in the near to medium including by leveraging residential sales channels, and further Factors affecting Sunrise performance term. Sunrise has been implementing strategies designed to increasing its share of wallet of existing enterprise business Sunrise believes that the key factors affecting its historical reduce subscriber volume loss and price sensitivity, including customers (250 employees and above). and future business and financial performance include: premium positioning of the Sunrise brand, promotion of Investments in network quality. Sunrise revenues are converged subscriptions and introduction of value-added Sunrise-UPC transaction. The combination of the Sunrise dependent on its reputation among customers for high services. legacy mobile franchise with UPC Switzerland’s broadband mobile- and fixed-network quality and reliability. While network, in the Sunrise-UPC transaction that closed in Service portfolio and pricing in business services. Sunrise does not develop its own network-infrastructure November 2020, created opportunities for both revenue Compared to its market share in residential services, Sunrise technologies or otherwise conduct meaningful research and growth and cost synergies. Capturing these opportunities believes that it is currently under-represented in business- development activities, Sunrise contracts with required the combined company to invest in integrating customer services, where Swisscom is by far the dominant infrastructure-technology providers to purchase and install operations, and also came with some expected execution competitor. Growth in business- and wholesale-services upgrades and additions to its network infrastructure in order challenges, primarily related to preserving ARPUs and segment revenues in the periods presented reflected, in part, to maintain and enhance the quality and reliability of its elevated customer churn experienced while migrating legacy the success of efforts by Sunrise to capture additional telecommunications services. Therefore, Sunrise undertook UPC customers from the higher-priced legacy UPC platform market share in Swiss business services, supported by its capital expenditures in the periods presented to increase to the Sunrise brand. robust telecommunications-services offerings and its capacity and upgrade the mobile infrastructure. During the evolving portfolio of value-added services (such as security, periods presented, the capital-expenditure profile of Sunrise Competition. The Swiss telecommunications market is ICT, consulting and engineering solutions) underpinned by an has benefited, and is expected to continue to benefit, from served by three primary players, Swisscom, Sunrise and Salt, ecosystem of strategic partners. Such revenue growth also its hybrid network infrastructure, which utilises a mix of with Swisscom historically holding the largest market share reflects growth in revenues from existing business owned infrastructure, shared antenna sites and supplemental across all services. Close competition among the three customers, primarily as a result of the expansion of the network-access agreements with subscriber-based charges players has resulted in industry pricing pressure leading to businesses of Sunrise customers necessitating additional to increase network coverage and enhance service offerings, decreased industry ARPUs, with each of the three services, including, primarily, additional mobile-service thereby substantially reducing capital expenditures competitors, including Sunrise, introducing flanker brands to subscriptions, but also as a result of efforts by Sunrise to necessary to support growth. provide services at lower prices and engaging in price-based cross-sell additional services to existing customers. In the promotions and price-matching offers to win customers. Cost management. Sunrise supports its profitability by business-services segment, the size of the Sunrise customer base is generally less impacted by its service prices than in managing its cost profile and therefore continuously Subscriber base and ARPU in residential services. Sunrise the residential segment because Sunrise normally offers its reviewing its cost base. The company is consistently looking revenues in the residential segment are dependent on its portfolio of services to business customers in customised for optimisation opportunities and efficiency improvements ability to maintain and expand its subscriber base. In addition, service packages at negotiated prices, benefiting from across its operations, supported by disciplined cost controls Sunrise revenues in this segment are dependent on its ability volume, usage and bundling discounts. Although certain of and initiatives to simplify processes, leverage scale and to balance its service prices with the size of its subscriber the Sunrise business customers may be sensitive to mobile- base to optimise ARPU, calculated as the average monthly remain agile. service price fluctuations, particularly in larger enterprises, revenue per fixed customer relationship or mobile subscriber, the number of mobile-service subscriptions generally 3 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Interest and currency exchange rates. In the periods due 2028. presented, Sunrise after-tax losses and free cash flows benefited from relatively low interest rates after hedges, Following the refinancing completed on 9 October 2025, the resulting from the low interest-rate environment prevailing at Group, on 13 November 2025, fully redeemed the remaining the time the debt was incurred. While substantially all of USD 75 million of 5.5% Senior Notes due 2028, eliminating Sunrise debt is denominated in EUR or USD, substantially all this maturity entirely. debt has been swapped into CHF and interest rates were fixed through hedging arrangements at the time the debt In December 2025, the Group further reduced gross was incurred. indebtedness through a partial repayment of EUR 56.8 million of Senior Secured Notes due 2029, lowering the outstanding As of 30 June 2026, Sunrise had outstanding third-party balance of those notes to EUR 318.1 million. indebtedness together with accrued interest of CHF 4.5 billion, at a weighted-average cost of capital of As a result of these transactions, near-term maturities were approximately 2.7% after interest-rate hedges. Sunrise materially reduced, the weighted-average maturity of the indebtedness outstanding as of 30 June 2026 matures Group’s debt was extended, and the debt stack remained between 2029 and 2032. substantially fixed-rate or economically hedged through 2032, limiting exposure to interest-rate and currency On 13 February 2025, Sunrise announced the issuance of volatility. Facility AAA (USD 1,300 million Term Loan B due 2032) by Sunrise Financing Partnership. The loan was drawn and On 22 July 2026, Sunrise announced that it further closed on 13 February 2025. Proceeds from the new loan strengthened its debt maturity profile. Please refer to Note were used to refinance Facility AX in full and to partially 13 of the Interim Consolidated Financial Statements for repay Facility AY, including associated fees. further details. On 28 May 2025, Sunrise issued Sunrise FinCo I B.V. 4.625% 2032 (€) and applied the proceeds in full to refinance its existing Term Loans AU and AY. On 30 June 2025, the Group amended Revolving Facility B, replacing the prior EUR 720 million revolving commitment (maturing September 2029) with a CHF 500 million facility (maturing March 2031), transitioning pricing from EURIBOR +2.5% to SARON +2.0%. On 9 October 2025, the Group issued an additional 4.625% Senior Secured Notes due 2032 through its subsidiary Sunrise FinCo I B.V. Together with a new USD 650 million term loan under Facility AAA (fungible with, and consolidating into, Facility AAA) maturing in February 2032, the proceeds were used to refinance existing debt, including Term Loan AT and a portion of the USD 5.5% Senior Notes 4 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Financial review The following financial review, which should be read in conjunction with the Sunrise Interim Certain uppercase terms used below have been defined in the Notes to the Interim Consolidated Financial Statements included in this report, is intended to assist in providing an Consolidated Financial Statements. understanding of the results of operations and financial condition for the periods ended 30 June 2026 and 2025 and is organised as follows: Summary financial information and operating data • Summary financial information and operating data: This section includes summary The tables below set out summary financial information and operating data of Sunrise for the financial information and operating data of Sunrise. indicated periods. • Results of operations: This section provides an analysis of actual results of operations. Sunrise results have been prepared in accordance with IFRS. The following information should • Liquidity and capital resources: This section provides an analysis of corporate and be read in conjunction with the Sunrise Interim Consolidated Financial Statements included in subsidiary liquidity and the Interim Consolidated Statements of Cash Flows. this report. Sunrise historical results are not necessarily indicative of expected future results. • Quantitative and qualitative disclosures about market risk: This section provides discussion and analysis of the market risks that Sunrise faces. Sunrise Statements of Income or Loss Data: Six months ended 30 June Three months ended 30 June CHF in millions 2026 2025 2026 2025 Revenue 1,435.7 1,453.7 712.9 731.6 Direct costs (383.1) (376.0) (192.1) (191.7) Personnel expenses (212.2) (219.1) (103.5) (111.6) Other operating income and capitalised labour 30.1 31.3 14.8 15.8 Other operating expenses (331.2) (330.8) (150.9) (164.0) Operating income before depreciation and amortisation 539.3 559.1 281.2 280.1 Depreciation of right-of-use assets (61.9) (65.0) (31.2) (32.1) Depreciation and amortisation (431.8) (456.2) (217.8) (222.8) Operating income 45.6 37.9 32.2 25.2 Financial income 58.6 422.0 37.3 359.1 Financial expenses (181.6) (530.9) (94.8) (456.7) Share of gains of equity method investments 2.0 4.1 0.0 3.0 Income (loss) before taxes (75.4) (66.9) (25.3) (69.4) Income tax (expense) benefit 13.6 12.0 2.9 15.8 Net loss (61.8) (54.9) (22.4) (53.6) 5 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Sunrise Cash Flow Data: Six months ended 30 June Three months ended 30 June 2026 2025 2026 2025 CHF in millions Net cash provided by operating activities 467.1 461.6 367.3 290.5 Net cash used in investing activities (128.6) (277.2) (45.5) (165.9) Net cash used in financing activities (511.6) (402.1) (373.5) (218.8) Effect of exchange rate changes on cash (0.3) (0.3) (0.1) (0.2) Net decrease in cash and cash equivalents (173.4) (218.0) (51.8) (94.4) Sunrise Summary Financial Data: Six months ended 30 June Three months ended 30 June 2026 2025 2026 2025 CHF in millions, except percentages Revenue 1,435.7 1,453.7 712.9 731.6 Net loss (61.8) (54.9) (22.4) (53.6) Net loss margin (4.3)% (3.8)% (3.1)% (7.3)% 1 Adjusted EBITDAaL 490.3 494.1 244.4 254.1 Adjusted EBITDAaL margin 34.2% 34.0% 34.3% 34.7% Net cash provided by operating activities 467.1 461.6 367.3 290.5 2 Adjusted Free Cash Flow 85.9 16.8 203.5 144.5 1 Adjusted EBITDAaL is the primary measure used by the Sunrise chief operating decision equity-method investments, financial income, financial expenses, depreciation and maker to evaluate operating performance and is also a key factor that is used by the internal amortisation, share-based compensation expense and restructuring and other. Other decision makers within Sunrise to (i) determine how to allocate resources and (ii) evaluate the operating items include but are not limited to (1) provisions and provision releases related to effectiveness of Sunrise management for the purposes of annual and other incentive- litigation, (2) certain related-party charges and (3) gains and losses on the disposal of long- compensation plans. The Sunrise internal decision makers believe Adjusted EBITDAaL is a lived assets. Consolidated Adjusted EBITDA and Adjusted EBITDAaL are non-IFRS measures, meaningful measure because it represents a transparent view of recurring operating which readers should view as a supplement to, and not a substitute for, IFRS measures of performance that is unaffected by the Sunrise capital structure and allows management to profitability included in the Sunrise Interim Consolidated Financial Statements included in this (a) readily view operating trends, (b) perform analytical comparisons and benchmarking report. Further, the Sunrise definition of Adjusted EBITDAaL and Adjusted EBITDA may differ between segments and (c) identify strategies to improve operating performance. Adjusted from the way other companies define and apply their definitions of such terms. The following EBITDAaL is defined as Adjusted EBITDA after lease-related expenses. Adjusted EBITDA is table provides a reconciliation of net income (loss) to Adjusted EBITDA and Adjusted defined as income (loss) before income-tax benefit (expense), share of losses (gains) of EBITDAaL: 6 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Six months ended 30 June Three months ended 30 June CHF in millions 2026 2025 2026 2025 Net loss (61.8) (54.9) (22.4) (53.6) Income tax expense (benefit) (13.6) (12.0) (2.9) (15.8) Share of gains of equity method investments (2.0) (4.1) 0.0 (3.0) Financial income (58.6) (422.0) (37.3) (359.1) Financial expenses 181.6 530.9 94.8 456.7 Operating income 45.6 37.9 32.2 25.2 Depreciation and amortisation 431.8 456.2 217.8 222.8 Depreciation of right-of-use assets 61.9 65.0 31.2 32.1 Share-based compensation expense 14.4 23.5 8.6 16.2 Restructuring and other 28.5 7.1 1.0 5.1 Adjusted EBITDA 582.1 589.7 290.7 301.4 Lease-related expenses (91.8) (95.6) (46.3) (47.3) Adjusted EBITDAaL 490.3 494.1 244.4 254.1 2 Adjusted Free Cash Flow is defined as net cash provided by operating activities plus (i) service debt, (2) distribute dividends to shareholders and (3) fund new investment operating-related vendor-financed additions (which represents an increase in the period to opportunities after consideration of all actual cash payments related to its working-capital actual cash available as a result of extending vendor payment terms beyond normal payment activities and expenses that are capital in nature, whether paid inside normal vendor payment terms, which are typically 90 days or less, through non-cash financing activities) and (ii) cash terms or paid later outside normal vendor payment terms (in which case Sunrise typically receipts in the period from interest-related derivatives, less (a) cash payments in the period pays in less than 365 days). Adjusted Free Cash Flow should not be understood to represent for interest, (b) cash payments in the period for capital expenditures, (c) principal payments the ability to fund discretionary amounts, as Sunrise has various mandatory and contractual on amounts financed by vendors and intermediaries (which represents a decrease in the obligations, including debt repayments, that are not deducted to arrive at these amounts. period to actual cash available as a result of paying amounts to vendors and intermediaries Investors should view Adjusted Free Cash Flow as a supplement to, and not a substitute for, where vendor payments were previously extended beyond the normal payment terms) and IFRS measures of liquidity included in the Sunrise Consolidated Statements of Cash Flows. (d) principal payments on lease liabilities (which represents a decrease in the period to actual Further, the Sunrise definition of Adjusted Free Cash Flow may differ from the way other cash available), each as reported in the Consolidated Statements of Cash Flows. Sunrise companies define and apply their definition of Adjusted Free Cash Flow. The following table believes its presentation of Adjusted Free Cash Flow, which is a non-IFRS measure, provides provides a reconciliation of net cash provided by operating activities to Adjusted Free Cash useful information to investors because this measure can be used to gauge its ability to (1) Flow: 7 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Six months ended 30 June Three months ended 30 June CHF in millions 2026 2025 2026 2025 Net cash provided by operating activities 467.1 461.6 367.3 290.5 (143.5) (135.9) (18.7) (32.9) Interest paid Interest-related derivative receipts (payments) 30.7 5.4 — 15.6 i Vendor financing additions 138.8 188.4 52.6 97.6 (128.3) (273.9) (45.5) (165.9) Capital expenditures (219.7) (174.2) (132.2) (41.2) Principal payments on vendor financing Payment of lease liabilities (59.2) (54.7) (20.0) (19.4) Adjusted Free Cash Flow 85.9 16.8 203.5 144.5 i For the purposes of the Sunrise Consolidated Statements of Cash Flows, vendor financing its Consolidated Statements of Cash Flows. For the purposes of its Adjusted Free Cash Flow additions represent operating-related expenses financed by an intermediary that are treated definition, Sunrise (a) adds in the constructive financing cash inflow when the intermediary as constructive operating cash outflows and constructive financing cash inflows when the settles the liability with the vendor, as its actual net cash available at that time is not affected intermediary settles the liability with the vendor. The capital-related expenses financed by an and (b) subsequently deducts the related financing cash outflow when Sunrise actually pays intermediary are treated as non-cash transactions on Day 1. When Sunrise pays the financing the financing intermediary, reflecting the actual reduction to its cash available to service debt intermediary for both operating and capital transactions, it records financing cash outflows in or fund new investment opportunities. Sunrise Summary ARPU Data: Six months ended 30 June Three months ended 30 June CHF 2026 2025 2026 2025 Residential Customers: Fixed Services 1 ARPU per Fixed Customer Relationship 54.7 58.1 54.5 57.9 Mobile Services 2 ARPU per Mobile Subscriber 28.9 29.0 28.9 29.3 1 Average Revenue Per Unit (ARPU) is the average subscription revenue per average fixed customer relationship or mobile subscriber, as applicable. ARPU per fixed customer relationship is calculated by dividing the average subscription revenue from residential fixed services by the average of the opening and ending balances of fixed customer relationships for the period. 2 ARPU per mobile subscriber is calculated by dividing the average mobile subscription revenue (including interconnect revenue but excluding handset sales and late fees) by the average of the opening and ending balances of mobile subscribers in service for the period. 8 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Sunrise Summary Operating Data: As of 30 June 2026 2025 Residential Customers: Fixed Services 1 Fixed Customer Relationships 1,324,226 1,360,565 2 Select Fixed RGUs : 3 Broadband Internet 1,137,499 1,152,349 4 Enhanced TV 857,461 882,635 Mobile Services 5 Mobile RGUs 2,339,695 2,349,000 Postpaid Mobile RGUs 2,118,314 2,081,252 Prepaid Mobile RGUs 221,381 267,748 6 Fixed-mobile Convergence 61.1% 58.5% Business Customers & Wholesale: 7 Fixed Services 1 Fixed Customer Relationships 136,481 130,321 2 Select Fixed RGUs : 3 Broadband Internet 149,967 143,389 4 Enhanced TV 99,754 93,660 8 Mobile Services 5 Mobile RGUs 837,079 797,167 Postpaid Mobile RGUs 801,344 754,703 Prepaid Mobile RGUs 35,735 42,464 6 Fixed-mobile Convergence 77.5% 77.2% 9 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements 1 Fixed customer relationships represent the number of services provided to Sunrise employees generally are who receive discounted services pursuant to a programme customers who receive at least one of the Sunrise counted as RGUs. Sunrise has in place with their employer and small business broadband Internet, TV or fixed-line telephony services, customers (generally defined as businesses with nine or 3 without regard to which or to how many services they Internet subscribers are homes, residential multiple-dwelling fewer employees) and does not include services provided to subscribe. Fixed customer relationships generally are units or commercial units that receive fixed broadband small-medium business customers (generally defined as counted on a unique-premises basis. Accordingly, if an Internet services over Sunrise fixed or mobile networks or businesses with 10 to 249 employees) and large enterprises individual receives Sunrise services in two premises (e.g., a that Sunrise services through a partner network. (generally defined as businesses with 250 or more primary home and a vacation home), that individual generally employees) or wholesale services 4 will count as two fixed customer relationships. Sunrise fixed Enhanced TV subscribers are homes, residential multiple- 8 customer relationships include customers who receive basic dwelling units or commercial units that receive Sunrise Business Customer & Wholesale mobile RGUs represent the cable services (BCS) which are services delivered without enhanced TV services, which are TV services delivered number of active SIM cards in service that are provided to the use of encryption-enabling, integrated or virtual through encryption-enabling, integrated or virtual business and wholesale customers, including customers who technology as well as customers who receive fixed technology over the Sunrise broadband network or through a receive discounted services pursuant to a programme telephony services over Sunrise networks, or that Sunrise partner network. Enhanced TV subscribers exclude Sunrise has in place with their employer, SOHO, SME and services through a partner network. subscribers that receive BCS, as described above. enterprise customers, as well as to customers who subscribe for mobile services delivered over Sunrise networks through 2 5 A fixed RGU is, separately, an Internet subscriber or an A mobile RGU is a mobile subscriber, which represents an a branded reseller with whom Sunrise contracts, and enhanced TV subscriber. A home, residential multiple- active SIM card in service. A subscriber who has a data and excluding customers who subscribe for mobile services dwelling unit or commercial unit may contain one or more voice plan for a mobile handset and a data plan for a laptop delivered over Sunrise networks through an MVNO with RGUs. For example, if a residential customer subscribes to would be counted as two mobile subscribers. Sunrise has whom Sunrise contracts, as well as other wholesale the Sunrise broadband Internet service and enhanced TV both prepaid and postpaid mobile subscribers. Prepaid customers. service, the customer will constitute two RGUs. RGUs subscribers are excluded from the mobile-subscriber count Additional general notes to table generally are counted on a unique-premises basis such that a after a period of inactivity of 90 days, based on industry While Sunrise takes appropriate steps to ensure that given premises does not count as more than one RGU for standards in Switzerland. subscriber statistics are presented on a consistent and any given service. However, if an individual receives one of 6 accurate basis at any given balance-sheet date, the the services in two premises (e.g., a primary home and a Fixed-mobile convergence penetration represents the variability in (i) the nature and pricing of products and vacation home), that individual will count as two RGUs for number of customers who subscribe to both a fixed services, (ii) the distribution platform, (iii) billing systems, (iv) that service. Each bundled Internet or enhanced TV service is broadband Internet service and a pre- or postpaid mobile- bad-debt collection efforts and (v) other factors add counted as a separate RGU regardless of the nature of any telephony service, divided by the total number of customers complexity to the subscriber-counting process. Sunrise bundling discount or promotion. Non-paying subscribers are who subscribe to a fixed broadband Internet service. periodically reviews the subscriber-counting policies and counted as subscribers during their free promotional service 7 underlying systems to improve the accuracy and consistency period. Some of these subscribers may choose to disconnect Business Customer & Wholesale fixed relationships and of the data reported on a prospective basis. after their free service period. Services offered without fixed RGUs include customers who receive fixed services charge on a long-term basis (e.g., certain preferred that are the same or similar to mass-marketed products subscribers) generally are not counted as RGUs. Free offered to residential customers. This includes customers 10 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Results of operations The discussion presented in this section provides an analysis of Sunrise revenue and expenses for the periods ended 30 June 2026 and 2025 as further described in Notes 4, 5 and 6 to the Interim Consolidated Financial Statements. Revenue Sunrise derives revenue primarily from communications services provided to residential and business customers, including mobile, broadband Internet, TV and fixed-line telephony services, and from infrastructure and support functions. Residential Customers Revenue Residential fixed subscription revenue includes amounts received from subscribers for ongoing services and the recognition of deferred installation revenue over the associated contract period. Residential fixed non-subscription and hardware revenue includes, among other items, channel carriage fees, late fees and revenue from the sale of equipment. Residential subscription revenue from subscribers who purchase bundled services at a discounted rate is generally allocated proportionally to each service based on the standalone price for each individual service. As a result, changes in the standalone pricing of fixed and mobile products or the composition of bundles can contribute to changes in product revenue categories from period to period. Residential mobile subscription revenue includes amounts received from subscribers for ongoing services. Residential mobile non-subscription and hardware revenue includes, among other items, revenue from sales of mobile handsets and other devices. Business Customers & Wholesale Revenue Business Customer & Wholesale subscription revenue represents revenue from (i) services provided to SOHO subscribers and (ii) mobile, connectivity and information and communication technology (ICT) services provided to medium and large enterprises. Business Customer & Wholesale non-subscription and hardware revenue includes revenue from business broadband Internet, TV, fixed-line telephony, data and ICT services, such as carrier and roaming services, offered to medium and large enterprises and fixed-line and mobile services on a wholesale basis, offered to other operators. Infrastructure & Support Functions Revenue Infrastructure & Support Functions revenue primarily includes built-to-suit (BTS) revenue related to mobile towers built by Sunrise and sold to Swiss Towers. 11 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Periods ended 30 June 2026 compared to periods ended 30 June 2025 Revenue by major category and reportable segment for the indicated periods is set out below: Increase Increase Six months ended 30 June (decrease) Three months ended 30 June (decrease) CHF in millions, except percentages 2026 2025 % 2026 2025 % Residential Customers: Fixed Revenue: 459.4 496.8 (7.5) 225.9 245.9 (8.1) 437.7 476.9 (8.2) 216.8 237.5 (8.7) Subscription Non-subscription and hardware 21.7 19.9 9.0 9.1 8.4 8.3 Mobile Revenue: 500.6 494.9 1.2 246.5 249.8 (1.3) 405.1 408.1 (0.7) 202.7 206.3 (1.7) Subscription 95.5 86.8 10.0 43.8 43.5 0.7 Non-subscription and hardware Other: 52.7 49.9 5.6 27.1 25.6 5.9 Total Residential Customers Revenue 1,012.7 1,041.6 (2.8) 499.5 521.3 (4.2) Business Customers & Wholesale: Fixed Revenue: 239.4 238.2 0.5 120.8 120.8 — 154.1 153.4 0.5 76.9 77.0 (0.1) Subscription 85.3 84.8 0.6 43.9 43.8 0.2 Non-subscription and hardware Mobile Revenue: 174.7 169.0 3.4 86.5 86.3 0.2 134.5 133.2 1.0 67.5 67.4 0.1 Subscription 40.2 35.8 12.3 19.0 18.9 0.5 Non-subscription and hardware 4.4 1.6 175.0 1.7 0.9 88.9 Other: Total Business Customers & Wholesale Revenue 418.5 408.8 2.4 209.0 208.0 0.5 Infrastructure & Support Functions: 4.5 3.3 36.4 4.4 2.3 91.3 Other: Total Infrastructure & Support Functions Revenue 4.5 3.3 36.4 4.4 2.3 91.3 Total Revenue 1,435.7 1,453.7 (1.2) 712.9 731.6 (2.6) 12 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Residential Customers. The details of the decrease in Sunrise Residential Customer Revenue during the periods ended 30 June 2026, compared to the corresponding period in 2025, are set out below: Six months ended 30 June Three months ended 30 June Subscription Non- Total Subscription Non- Total CHF in millions revenue subscription revenue subscription Increase (decrease) in residential fixed revenue due to change in: 1 (11.6) — (11.6) (6.6) — (6.6) Average number of fixed customer relationships (27.6) — (27.6) (14.1) — (14.1) ARPU Increase in residential fixed non-subscription and hardware revenue — 1.8 1.8 — 0.7 0.7 (39.2) 1.8 (37.4) (20.7) 0.7 (20.0) Total increase (decrease) in residential fixed revenue Increase (decrease) in residential mobile revenue due to change in: 2 (1.5) — (1.5) (0.9) — (0.9) Average number of mobile subscribers ARPU (1.5) — (1.5) (2.7) — (2.7) Increase in residential mobile non-subscription and hardware revenue — 8.7 8.7 — 0.3 0.3 (3.0) 8.7 5.7 (3.6) 0.3 (3.3) Total increase (decrease) in residential mobile revenue — 2.8 2.8 — 1.5 1.5 Increase in other residential revenue (42.2) 13.3 (28.9) (24.3) 2.5 (21.8) Total 1 Average number of fixed customer relationships is calculated as the average of the opening new portfolio launch in spring 2025, (iv) an increase in mobile non-subscription and hardware and ending balances of fixed customer relationships in the period. revenue due to higher handset sales and (v) an increase in other revenue, mainly driven by higher fee-related revenue. 2 Average number of mobile subscribers is calculated as the average of the opening and Business Customers & Wholesale. Total Business Customers & Wholesale revenue increased ending balances of mobile subscribers in the period. CHF 9.7 million or 2.4% during the six-month period and CHF 1.0 million or 0.5% during the three-month period ended 30 June 2026, compared to the corresponding periods in 2025. Total Residential Customers revenue decreased CHF 28.9 million or 2.8% during the six- The revenue increase is primarily due to the net effect of (i) an increase in fixed subscription month period and CHF 21.8 million or 4.2% during the three-month period ended 30 June revenue during the six-month period, including higher FVNO-related subscription revenues 2026, compared to the corresponding periods in 2025. The revenue decrease in both periods and higher variable usage, partially offset by lower ramp-up of initiatives (in the three-month is primarily due to the net effect of (i) a decrease in fixed subscription revenue due to lower period the fixed subscription revenue remained stable), (ii) an increase in fixed non- ARPU, mainly driven by higher discounts (partially from a technical shift of discount allocation subscription and hardware revenue due to higher installation revenue in the three- and six- from mobile to fixed since the new portfolio launch in spring 2025) and due to lower average month periods, partially offset by lower FVNO-related hardware revenues in the three-month number of fixed customer relationships, (ii) an increase in fixed non-subscription and period, (iii) an increase in mobile subscription revenue primarily due to a higher base and hardware revenue, mainly driven by higher MySports revenue, (iii) a decrease in mobile higher MVNO-related revenues, partially offset by lower variable revenues, (iv) an increase in subscription revenue due to a lower average number of mobile subscribers driven by a lower mobile non-subscription and hardware revenue in the six-month period due to higher handset prepaid base, lower variable usage (interconnect, roaming and options) and a lower ARPU, sales and an increase in wholesale services driven by higher roaming revenues partially offset partially mitigated by a technical shift of discount allocation from mobile to fixed since the 13 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements by lower handset sales in the three-month period and (v) an increase in other revenue mainly due to higher fee-related revenue. Infrastructure and Support Functions. Total Infrastructure and Support Functions revenue increased CHF 1.2 million or 36.4% during the six-month period and CHF 2.1 million or 91.3% during the three-month period ended 30 June 2026, compared to the corresponding periods in 2025, primarily due to higher BTS revenue. 14 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Profit Reconciliation Direct costs Direct costs include programming and copyright costs, interconnect and access costs, costs of mobile handsets and other devices and other costs of sales related to Sunrise operations. Programming and copyright costs represent a significant portion of operating costs and are subject to rises in future periods due to various factors, including (i) higher costs associated with the expansion of digital video content, including rights associated with ancillary product offerings and rights that provide for the broadcast of live sporting events, and (ii) rate increases. Personnel expenses Personnel expenses include salary and payroll costs, commissions, share-based compensation and contingent labour. Other operating income and capitalised labour This line item includes capitalised internal labour and other income primarily related to legal settlements. Other operating expenses Other expenses include marketing and other sales costs, network operations, customer- service costs, business-service costs, restructuring and other general expenses. 15 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Periods ended 30 June 2026 compared to periods ended 30 June 2025 Increase Increase Six months ended 30 June (decrease) Three months ended 30 June (decrease) CHF in millions, except percentages 2026 2025 % 2026 2025 % Revenue 1,435.7 1,453.7 (1.2) 712.9 731.6 (2.6) Direct costs (383.1) (376.0) 1.9 (192.1) (191.7) 0.2 Personnel expenses (212.2) (219.1) (3.1) (103.5) (111.6) (7.3) Other operating income and capitalised labour 30.1 31.3 (3.8) 14.8 15.8 (6.3) Other operating expenses (331.2) (330.8) 0.1 (150.9) (164.0) (8.0) Operating income before depreciation and amortisation 539.3 559.1 (3.5) 281.2 280.1 0.4 Depreciation of right-of-use assets (61.9) (65.0) (4.8) (31.2) (32.1) (2.8) Depreciation and amortisation (431.8) (456.2) (5.3) (217.8) (222.8) (2.2) Operating income 45.6 37.9 20.3 32.2 25.2 27.8 Financial income 58.6 422.0 (86.1) 37.3 359.1 (89.6) Financial expenses (181.6) (530.9) (65.8) (94.8) (456.7) (79.2) Share of gains of equity method investments 2.0 4.1 (51.2) 0.0 3.0 (100.0) Income (loss) before taxes (75.4) (66.9) (12.7) (25.3) (69.4) 63.5 Income tax (expense) benefit 13.6 12.0 13.3 2.9 15.8 (81.6) Net loss (61.8) (54.9) (12.6) (22.4) (53.6) 58.2 16 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Direct costs Increase Increase Six months ended 30 June (decrease) Three months ended 30 June (decrease) CHF in millions, except percentages 2026 2025 % 2026 2025 % Residential Customers 237.9 234.3 1.5 116.7 117.1 (0.3) Business Customers & Wholesale 140.4 135.3 3.8 71.8 71.1 1.0 Infrastructure & Support Functions 4.8 6.4 (25.0) 3.6 3.5 2.9 Total 383.1 376.0 1.9 192.1 191.7 0.2 Residential Customers. Total Residential Customers direct costs increased CHF 3.6 million or cost in the six-month period, partially offset by lower mobile handset costs driven by lower 1.5% during the six-month period and decreased CHF 0.4 million or 0.3% during the three- handset sales volumes in the three-month period. month period ended 30 June 2026, compared to the corresponding periods in 2025. The Infrastructure & Support Functions. Total Infrastructure and Support Functions direct costs increase in the six-month period is primarily due to an increase in mobile handset costs driven decreased CHF 1.6 million or 25.0% during the six-month period and increased CHF 0.1 million by higher handset sales volumes. or 2.9% during the three-month period ended 30 June 2026, compared to the corresponding Business Customers & Wholesale. Total Business Customers & Wholesale direct costs periods in 2025, primarily due to lower access costs following the expiry of legacy capacity increased CHF 5.1 million or 3.8% during the six-month period and CHF 0.7 million or 1.0% agreements in the six-month period partially offset by an increase of BTS-related costs in the during the three-month period ended 30 June 2026, compared to the corresponding periods three-month period. in 2025, primarily due to (i) an increase in access cost and (ii) an increase in FVNO-related Personnel expenses Increase Increase Six months ended 30 June (decrease) Three months ended 30 June (decrease) CHF in millions, except percentages 2026 2025 % 2026 2025 % Residential Customers 71.2 72.3 (1.5) 35.1 36.1 (2.8) Business Customers & Wholesale 41.1 42.1 (2.4) 19.6 21.2 (7.5) Infrastructure & Support Functions 99.9 104.7 (4.6) 48.8 54.3 (10.1) Total 212.2 219.1 (3.1) 103.5 111.6 (7.3) Residential Customers. Total Residential Customers personnel expenses decreased CHF 1.1 (ii) lower internal sales commissions. million or 1.5% during the six-month period and CHF 1.0 million or 2.8% during the three- Business Customers & Wholesale. Total Business Customers & Wholesale personnel month period ended 30 June 2026, compared to the corresponding periods in 2025, primarily expenses decreased CHF 1.0 million or 2.4% during the six-month period and CHF 1.6 million due to (i) lower payroll expenses as a result of lower residential-customer staffing levels and 17 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements or 7.5% during the three-month period ended 30 June 2026, compared to the corresponding Infrastructure & Support Functions. Total Infrastructure and Support Functions personnel periods in 2025, primarily due to lower payroll expenses as a result of lower business expenses decreased by CHF 4.8 million or 4.6% during the six-month period and CHF 5.5 customers and wholesale staffing levels. million or 10.1% during the three-month period ended 30 June 2026, compared to the corresponding periods in 2025, primarily due to lower share-based compensation. Other operating income and capitalised labour Increase Increase Six months ended 30 June (decrease) Three months ended 30 June (decrease) CHF in millions, except percentages 2026 2025 % 2026 2025 % Residential Customers 3.1 3.5 (11.4) 1.5 1.9 (21.1) Business Customers & Wholesale 3.0 3.0 0.0 1.4 1.4 0.0 Infrastructure & Support Functions 24.0 24.8 (3.2) 11.9 12.5 (4.8) Total 30.1 31.3 (3.8) 14.8 15.8 (6.3) Residential Customers. Total Residential Customers other operating income and capitalised Infrastructure & Support Functions. Total Infrastructure and Support Functions other labour decreased CHF 0.4 million or 11.4% during the six-month period and CHF 0.4 million or operating income and capitalised labour decreased CHF 0.8 million or 3.2% during the six- 21.1% during the three-month period ended 30 June 2026, compared to the corresponding month period and CHF 0.6 million or 4.8% during the three-month period ended 30 June periods in 2025, primarily due to a decrease in capitalisable labour activities. 2026, compared to the corresponding periods in 2025, primarily due to a decrease in capitalisable labour activities. Business Customers & Wholesale. Total Business Customers & Wholesale other operating income and capitalised labour remained unchanged during the six-month and three-month periods ended 30 June 2026, compared to the corresponding periods in 2025. Other operating expenses Increase Increase Six months ended 30 June (decrease) Three months ended 30 June (decrease) CHF in millions, except percentages 2026 2025 % 2026 2025 % Residential Customers 129.9 137.4 (5.5) 62.6 61.1 2.5 20.1 21.1 (4.7) 10.2 10.8 (5.6) Business Customers & Wholesale 181.2 172.3 5.2 78.1 92.1 (15.2) Infrastructure & Support Functions Total 331.2 330.8 0.1 150.9 164.0 (8.0) 18 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Residential Customers. Total Residential Customers other operating expenses decreased Depreciation and amortisation. Total depreciation and amortisation, including depreciation CHF 7.5 million or 5.5% during the six-month period and increased CHF 1.5 million or 2.5% and amortisation of right-of-use assets, decreased CHF 27.5 million or 5.3% during the six- during the three-month period ended 30 June 2026, compared to the corresponding periods month period and CHF 5.9 million or 2.3% during the three-month period ended 30 June in 2025, primarily due to (i) a decrease in professional services mainly from lower consultancy 2026, compared to the corresponding periods in 2025. spend in the six-month period partially compensated by higher consultancy spend in the Operating income. Operating income increased CHF 7.7 million or 20.3% during the six- three-month period, (ii) lower supply chain-related spend in the six-month period and (iii) month period and CHF 7.0 million or 27.8% during the three-month period ended 30 June lower IT expenses from lower project spend and different quarterly phasing of certain 2026, compared to the corresponding periods in 2025, driven by the aforementioned expenses in the six-month period. changes in revenue and expenses. Business Customers & Wholesale. Total Business Customers & Wholesale other operating Financial income. Financial income decreased CHF 363.4 million or 86.1% during the six- expenses decreased CHF 1.0 million or 4.7% during the six-month period and CHF 0.6 million month period and CHF 321.8 million or 89.6% during the three-month period ended 30 June or 5.6% during the three-month period ended 30 June 2026, compared to the corresponding 2026, compared to the corresponding periods in 2025, primarily due to a decrease in foreign- periods in 2025, primarily due to a decrease in IT expenses from lower project spend. currency transaction gains in the prior-year period which were not earned in 2026, partially Infrastructure & Support Functions. Total Infrastructure and Support Functions other offset by an increase in realised and unrealised gains on derivative instruments. operating expenses increased CHF 8.9 million or 5.2% during the six-month period and Financial expenses. Financial expenses decreased CHF 349.3 million and 65.8% for the six- decreased CHF 14.0 million or 15.2% during the three-month period ended 30 June 2026 month period and CHF 361.9 million or 79.2% during the three-month period ended 30 June compared to the corresponding periods in 2025. This includes an increase in the six-month 2026, compared to the corresponding periods in 2025, primarily due to foreign-currency period of approximately CHF 23 million due to a restructuring programme from Q1 2026 and a transaction losses incurred in the current-year period, partially offset by a decrease in interest decrease in the three-month period of approximately CHF 3 million due to a restructuring expense due to lower outstanding debt. programme in 2025. The remaining decrease in other operating expenses is primarily due to the net effect of (i) a decrease in IT expenses from lower project spend, (ii) a decrease in Income tax benefit. Sunrise recognised income tax benefits of CHF 13.6 million during the network-related cost, (iii) a decrease in expenses related to facility and energy and (iii) an six-month period and CHF 2.9 during the three-month period ended 30 June 2026 and increase in allowance for receivables driven by a change of estimate recorded in the six- income tax benefits of CHF 12.0 million during the six-month period and CHF 15.8 million month period of the previous year, which creates an unfavourable year-on-year comparison. during the three-month period ended 30 June 2025. The income tax benefit in the six-month period remained stable. The decrease in income tax benefit in the three-month period is primarily due to deferred tax expenses. Net loss. Net loss increased CHF 6.9 million or 12.6% during the six-month period and decreased CHF 31.2 or 58.2% during the three-month period ended 30 June 2026, compared to the corresponding periods in 2025, due to the aforementioned changes in the above items. 19 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Adjusted EBITDAaL. Adjusted EBITDAaL is the primary measure used by the Sunrise chief operating decision maker to evaluate segment operating performance. Consolidated Adjusted EBITDAaL is reconciled to net income (loss) (the most directly comparable IFRS financial measure) within the section Summary Financial Information and Operating Data. Consolidated Adjusted EBITDAaL is a non-IFRS measure, which readers should view as a supplement to, and not a substitute for, IFRS measures of performance included in the interim Consolidated Statements of Income or Loss. The following table sets out the Adjusted EBITDAaL of the reportable segments of Sunrise, as well as its Consolidated Adjusted EBITDAaL: Increase Increase Six months ended 30 June (decrease) Three months ended 30 June (decrease) CHF in millions, except percentages 2026 2025 % 2026 2025 % Residential Customers 550.3 575.7 (4.4) 273.2 296.1 (7.7) Business Customers & Wholesale 212.4 207.4 2.4 105.0 103.1 1.8 Infrastructure & Support Functions (272.4) (289.0) 5.7 (133.8) (145.1) 7.8 Total 490.3 494.1 (0.8) 244.4 254.1 (3.8) Adjusted EBITDAaL margin. The following table sets out the Adjusted EBITDAaL margins (Adjusted EBITDAaL divided by revenue) of each of the reportable segments: Six months ended 30 June Three months ended 30 June 2026 2025 2026 2025 Residential Customers 54.3% 55.3% 54.7% 56.8% Business Customers & Wholesale 50.8% 50.7% 50.2% 49.6% Infrastructure & Support Functions N.M. N.M. N.M. N.M. N.M. — not meaningful Residential Customers. Total Residential Customers Adjusted EBITDAaL decreased CHF Total Residential Customers Adjusted EBITDAaL decreased CHF 22.9 million or 7.7% during 25.4 million or 4.4% during the six-month period ended 30 June 2026, compared to the the three-month period ended 30 June 2026, compared to the corresponding period in 2025, corresponding period in 2025, primarily due to the net effect of (i) the aforementioned primarily due to the net effect of (i) the aforementioned decrease in revenue of CHF 21.8 decrease in revenue of CHF 28.9 million or 2.8%%, (ii) the aforementioned increase in direct million or 4.2%%, (ii) the aforementioned decrease in direct costs of CHF 0.4 million or 0.3%, costs of CHF 3.6 million or 1.5%, (iii) a decrease in indirect costs of CHF 8.0 million or 3.9%, (iii) an increase in indirect costs of CHF 1.0 million or 1.0%, primarily driven by the primarily driven by the aforementioned decrease in personnel expenses and the aforementioned increase in other operating expenses and the aforementioned decrease in aforementioned decrease in other operating expenses, partially offset by the aforementioned other operating income and capitalised labour, partially offset by the aforementioned decrease in other operating income and capitalised labour (excluding, in each case, expenses decrease in personnel expenses (excluding, in each case, expenses for share-based for share-based compensation, restructuring and other) and (iv) an increase in lease-related compensation, restructuring and other) and (iv) an increase in lease-related expenses of CHF expenses of CHF 0.9 million or 3.5%. The Adjusted EBITDAaL margin decreased by 1.0% 0.5 million or 3.9%. The Adjusted EBITDAaL margin decreased by 2.1% during the three-month during the six-month period ended 30 June 2026, compared to the corresponding period in period ended 30 June 2026, compared to the corresponding period in 2025, due to a higher 2025, due to a higher relative decrease in Adjusted EBITDAaL compared to revenue. relative decrease in Adjusted EBITDAaL compared to revenue. 20 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Business Customers & Wholesale. Total Business Customers & Wholesale Adjusted Infrastructure & Support Functions. Total Infrastructure and Support Functions Adjusted EBITDAaL increased CHF 5.0 million or 2.4% during the three-month period ended 30 June EBITDAaL increased CHF 16.6 million or 5.7% during the three-month period ended 30 June 2026, compared to the corresponding period in 2025, primarily due to the net effect of (i) the 2026, compared to the corresponding period in 2025, primarily due to the net effect of (i) the aforementioned increase in revenue of CHF 9.7 million or 2.4%%, (ii) the aforementioned aforementioned decrease in revenue of CHF 1.2 million or 36.4%%, (ii) the aforementioned increase in direct costs of CHF 5.1 million or 3.8%, (iii) a decrease in indirect costs of CHF 2.0 decrease in direct costs of CHF 1.6 million or 25.0%, (iii) a decrease in indirect costs of CHF million or 3.3%%, primarily driven by the aforementioned decrease in personnel expenses and 7.5 million or 3.4%, primarily driven by the aforementioned decrease in other operating the aforementioned decrease in other operating expenses (excluding, in each case, expenses expenses partially offset by the aforementioned decrease in other operating income and for share-based compensation, restructuring and other) and (iv) an increase in lease-related capitalised labour and increase in personnel expenses (excluding, in each case, expenses for expenses of CHF 1.6 million or 26.7%. The Adjusted EBITDAaL margin increased by 0.1% share-based compensation, restructuring and other) and (iv) a decrease in lease-related during the six-month period ended 30 June 2026, compared to the corresponding period in expenses of CHF 6.3 million or 9.8%. 2025, due to a higher relative increase in Adjusted EBITDAaL compared to revenue. Total Infrastructure and Support Functions Adjusted EBITDAaL increased CHF 11.3 million or Total Business Customers & Wholesale Adjusted EBITDAaL increased CHF 1.9 million or 1.8% 7.8% during the three-month period ended 30 June 2026, compared to the corresponding during the three-month period ended 30 June 2026, compared to the corresponding period period in 2025, primarily due to the net effect of (i) the aforementioned decrease in revenue in 2025, primarily due to the net effect of (i) the aforementioned increase in revenue of CHF of CHF 2.1 million or 91.3%%, (ii) the aforementioned increase in direct costs of CHF 0.1 1.0 million or 0.5%%, (ii) the aforementioned increase in direct costs of CHF 0.7 million or million or 2.9%, (iii) a decrease in indirect costs of CHF 7.2 million or 6.4%, primarily driven by 1.0%, (iii) a decrease in indirect costs of CHF 2.2 million or 7.2%, primarily driven by the the aforementioned decrease in other operating expenses partially offset by the aforementioned decrease in personnel expenses and the aforementioned decrease in other aforementioned decrease in other operating income and capitalised labour and increase in operating expenses (excluding, in each case, expenses for share-based compensation, personnel expenses (excluding, in each case, expenses for share-based compensation, restructuring and other) and (iv) an increase in lease-related expenses of CHF 0.6 million or restructuring and other) and (iv) a decrease in lease-related expenses of CHF 2.1 million or 18.8%. The Adjusted EBITDAaL margin increased by 0.6% during the three-month period 6.7%. ended 30 June 2026, compared to the corresponding period in 2025, due to a higher relative increase in Adjusted EBITDAaL compared to revenue. 21 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Liquidity and capital resources Sources and uses of cash Cash and cash equivalents At 30 June 2026, Sunrise had cash and cash equivalents of CHF 99.8 million, most of which connection with (i) acquisitions and other investment opportunities, (ii) loans and capital were held by its subsidiaries. The terms of the instruments governing the indebtedness of distributions to their intermediate holding companies or (iii) the satisfaction of contingent liabilities. No assurance can be given that any external funding will be available to its certain of these subsidiaries may restrict the ability of Sunrise to access the liquidity of these consolidated operating entities on favourable terms, or at all. subsidiaries. In addition, its ability to access the liquidity of its subsidiaries may be limited by tax, legal considerations and other factors. For additional information please refer to the Sunrise Interim Consolidated Statements of Corporate liquidity of Sunrise Cash Flows. As Sunrise typically does not hold significant amounts of cash and cash equivalents at the Capitalisation corporate level, its primary source of corporate liquidity consists of, subject to the At 30 June 2026, the outstanding principal amount of Sunrise consolidated third-party debt, restrictions noted above, proceeds in the form of distributions or loans from its subsidiaries. together with accrued interest, totalled CHF 4.5 billion, including CHF 0.5 billion that is From time to time, Sunrise may also supplement its sources of corporate liquidity with net proceeds received in connection with the issuance of debt instruments. No assurance can be classified as current in the Interim Consolidated Statements of Financial Position. The Sunrise given that any external funding will be available on favourable terms, or at all. debt profile has an extended maturity runway, with no short-term maturities (c. 86% of debt becoming due after 2029 and c. 61% of debt becoming due in 2032). Please refer to Note 10 of the Interim Consolidated Financial Statements for further details of the Group's financing The corporate liquidity requirements of Sunrise include (i) corporate general and arrangements. administrative expenses, (ii) interest payments on the Sunrise Holding Senior Notes and (iii) dividends and other returns of capital. From time to time, Sunrise may also require cash in connection with (i) the repayment of third-party debt (including the repurchase or exchange As of 30 June 2026, Sunrise was in compliance with its debt covenants. In addition, Sunrise does not anticipate any instances of non-compliance with respect to any debt covenants of outstanding debt securities in the open market or privately-negotiated transactions), (ii) that would have a material adverse impact on its liquidity during the next 12 months. the satisfaction of contingent liabilities, (iii) acquisitions, (iv) other investment opportunities or (v) income tax payments. Sunrise believes it has sufficient resources to repay or refinance the current portion of its Liquidity of consolidated operating entities debt and lease obligations and to fund foreseeable liquidity requirements during the next 12 In addition to cash and cash equivalents, the primary source of liquidity of consolidated months. However, as maturing debt grows in later years, Sunrise anticipates it will seek to operating entities is cash provided by operations and any borrowing availability under the refinance or otherwise extend its debt maturities. No assurance can be given that Sunrise will Sunrise Holding Bank Facility. The liquidity of the consolidated operating entities of Sunrise is be able to complete these refinancing transactions or otherwise extend its debt maturities. In generally used to fund (i) property and equipment additions, (ii) debt-service requirements, this regard, it is not possible to predict how political and economic conditions, sovereign- (iii) payments required by derivative instruments and (iv) payments associated with defined- debt concerns or any adverse regulatory developments could impact the credit markets benefit plans, and to settle certain commitments. In this regard, Sunrise has significant Sunrise accesses and, accordingly, its future liquidity and financial position. The ability of commitments related to certain operating costs associated with networks, purchase Sunrise to access debt financing on favourable terms, or at all, could be adversely impacted obligations associated with customer-premises equipment (CPE), certain service-related by (i) the financial failure of any of its counterparties, which could reduce amounts available commitments, programming-studio output and sport-rights contracts. These obligations are under committed credit facilities and adversely impact its ability to access cash deposited expected to represent a significant liquidity requirement of Sunrise consolidated operating with any failed financial institution and (ii) any tightening of the credit markets. In addition, entities, a significant portion of which is due over the next 12 to 24 months. sustained or increased competition, particularly in combination with adverse economic or From time to time, the consolidated operating entities of Sunrise may also require liquidity in regulatory developments, could have an unfavourable impact on Sunrise cash flows and liquidity. 22 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Interim Consolidated Statements of Cash Flows Period ended 30 June 2026 compared to period ended 30 June 2025 Summary. The Interim Consolidated Statements of Cash Flows for the periods ended 30 June 2026 and 2025, are summarised as follows: Increase Increase Six months ended 30 June (decrease) Three months ended 30 June (decrease) CHF in millions 2026 2025 CHF 2026 2025 CHF Net cash provided by operating activities 467.1 461.6 5.5 367.3 290.5 76.8 Net cash used in investing activities (128.6) (277.2) 148.6 (45.5) (165.9) 120.4 Net cash used in financing activities (511.6) (402.1) (109.5) (373.5) (218.8) (154.7) Effect of exchange rate changes on cash (0.3) (0.3) 0.0 (0.1) (0.2) 0.1 Net decrease in cash and cash equivalents (173.4) (218.0) 44.6 (51.8) (94.4) 42.6 Operating activities. The increase in net cash provided by operating activities in both periods is primarily attributable to changes in cash provided by working-capital items. Investing activities. The decrease in net cash used by investing activities in both periods is primarily attributable to lower capital expenditures of CHF 145.6 million in the six-month period and CHF 120.4 million in the three-month period, primarily due to increased spend related to assets acquired under vendor financing, the timing of payments for capital-related accrued liabilities and by lower property, plant and equipment and intangible asset additions. The capital expenditures Sunrise reports in its Interim Consolidated Statements of Cash Flows do not include amounts that are financed under capital-related vendor financing. Instead, these amounts are reflected as non-cash additions to property and equipment when the underlying assets are delivered and as repayments of debt when the principal is repaid. A reconciliation of Sunrise consolidated property and equipment additions to the capital expenditures reported in the Interim Consolidated Statements of Cash Flows is set out below: Increase Increase Six months ended 30 June (decrease) Three months ended 30 June (decrease) CHF in millions 2026 2025 CHF 2026 2025 CHF Property, plant and equipment and intangible asset additions 235.2 259.5 (24.3) 101.6 116.4 (14.8) — 3.0 (3.0) — 3.0 (3.0) Mergers and acquisitions (asset deals) (120.1) (31.9) (88.2) (64.8) (16.5) (48.3) Assets acquired under vendor financing Changes in current liabilities related to capital expenditures (including related-party amounts) 13.2 43.3 (30.1) 8.7 63.0 (54.3) Capital expenditures 128.3 273.9 (145.6) 45.5 165.9 (120.4) 23 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements The decrease in property, plant and equipment and intangible asset additions during the six-month period ended 30 June 2026, compared to the corresponding period in 2025, is primarily attributable to (i) lower spend for coverage, (ii) less expenditures for customer-premises equipment, (iii) lower spend for capacity upgrades, (iv) lower spend for product & enablers and (v) lower baseline. During the six-month periods ended 30 June 2026 and 2025, Sunrise property, plant and equipment and intangible asset additions represented 16.4% and 17.9% of revenue, respectively. The decrease in property, plant and equipment and intangible asset additions during the three-month period ended 30 June 2026, compared to the corresponding period in 2025, is primarily attributable to (i) lower spend for capacity upgrades, (ii) lower spend for coverage, (iii) lower baseline and (iv) lower expenditure for customer-premises equipment, partially offset by (v) higher spend for product & enablers. During the three-month periods ended 30 June 2026 and 2025, Sunrise property, plant and equipment and intangible asset additions represented 14.3% and 15.9% of revenue, respectively. Financing activities. The decrease in net cash used by financing activities is primarily attributable to the net effect of (i) a decrease in cash received in the form of debt borrowings of CHF 786.0 million in the six-month period and CHF 558.0 million in the three-month period, (ii) a decrease in cash used for repayments of debt of CHF 697.6 million in the six-month period and CHF 530.1 million in the three-month period, (iii) a decrease in cash paid for principal-related derivative instruments of CHF 67.7 million in the six-month period and CHF 20.7 million in the three-month period, (iv) a decrease in vendor financing additions of CHF 49.6 million in the six-month period and CHF 45.0 million in the three-month period and (v) an increase in cash paid for vendor financing of CHF 45.5 million in the six-month period and CHF 91.0 million in the three-month period. 24 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Quantitative and qualitative disclosures about market risk Sunrise is exposed to market risk in the normal course of business operations due to its ongoing investing and financing activities. Market risk refers to the risk of loss arising from adverse changes in foreign-currency exchange rates and interest rates. The risk of loss can be assessed from the perspective of adverse changes in fair values, cash flows and future profits. Sunrise has established policies, procedures and processes governing the management of market risks and the use of derivative instruments to manage exposure to such risks. Cash Sunrise invests its cash in highly liquid instruments that meet high credit-quality standards. At 30 June 2026, substantially all of the consolidated cash balance of Sunrise was denominated in Swiss francs. Projected cash flows associated with derivative instruments The following table provides information regarding the projected cash flows associated with derivative instruments. The Swiss-franc equivalents presented below are based on interest-rate projections and exchange rates as of 30 June 2026. These amounts are presented for illustrative purposes only and will likely differ from the actual cash payments or receipts required in future periods. Payments (receipts) due during: Total Remainder of 2027 2028 2029 2030 2031 2032 2033 2026 CHF in millions Projected derivative cash payments (receipts), net: 1 (42.3) (90.5) (85.3) (58.6) (43.2) (30.5) (19.0) — (369.4) Interest-related 2 — — 75.3 238.4 8.7 — 130.0 — 452.4 Principal-related 3 (2.2) (3.4) — — — — — — (5.6) Other Total (44.5) (93.9) (10.0) 179.8 (34.5) (30.5) 111.0 — 77.4 1 Includes (i) the cash flows of interest-rate cap, floor and swap contracts and (ii) the interest-related cash flows of cross-currency and interest-rate swap contracts. 2 Includes the principal-related cash flows of cross-currency swap contracts. 3 Includes amounts related to foreign-currency forward contracts. 25 Q2 Financial Results 2026 I Financial Review

Financial Review Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements 26 Q2 Financial Results 2026 I Financial Review

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Consolidated Statements Interim Consolidated Statements of Income or Loss (Unaudited) Note Six months ended 30 June Three months ended 30 June CHF in millions 2026 2025 2026 2025 Revenue 5 1,435.7 1,453.7 712.9 731.6 Direct costs (383.1) (376.0) (192.1) (191.7) 1 Personnel expenses (212.2) (219.1) (103.5) (111.6) Other operating income and capitalised labour 6 30.1 31.3 14.8 15.8 Other operating expenses 6 (331.2) (330.8) (150.9) (164.0) Depreciation of right-of-use assets (61.9) (65.0) (31.2) (32.1) Depreciation and amortisation (431.8) (456.2) (217.8) (222.8) Operating income 45.6 37.9 32.2 25.2 Financial income 11 58.6 422.0 37.3 359.1 Financial expenses 11 (181.6) (530.9) (94.8) (456.7) Share of gains of equity method investments 2.0 4.1 0.0 3.0 Income (loss) before taxes (75.4) (66.9) (25.3) (69.4) Income tax benefit 13.6 12.0 2.9 15.8 Net (loss) (61.8) (54.9) (22.4) (53.6) Attributable to: Sunrise Communications AG shareholders (63.6) (56.7) (23.3) (55.1) Non-controlling interests 1.8 1.8 0.9 1.5 Earnings (loss) per share Basic and diluted (loss) per share of class A 7 (0.9) (0.8) (0.3) (0.8) Basic and diluted (loss) per share of class B 7 (0.1) (0.1) (0.0) (0.1) The accompanying notes are an integral part of these interim condensed consolidated financial statements. 1 Excludes restructuring charge (see Note 6). 27 Q2 Financial Results 2026 I Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Interim Consolidated Statements of Comprehensive Income or Loss (Unaudited) Six months ended 30 June Three months ended 30 June CHF in millions 2026 2025 2026 2025 Net (loss) (61.8) (54.9) (22.4) (53.6) Items that are or may be reclassified to the statement of income or loss Foreign currency translation adjustments 0.3 (0.0) 0.0 0.0 Items that will not be reclassified to the statement of income or loss Pension-related adjustments (1.8) 4.6 (1.0) (1.4) Related tax 0.3 (0.8) 0.2 0.2 Other comprehensive income (loss), net of taxes (1.2) 3.8 (0.8) (1.2) Attributable to: Sunrise Communications AG shareholders (1.2) 3.6 (0.8) (1.2) Non-controlling interests 0.0 0.2 0.0 0.0 Total comprehensive income (loss), net of taxes (63.0) (51.1) (23.2) (54.8) Attributable to: Sunrise Communications AG shareholders (64.8) (53.1) (24.1) (56.3) Non-controlling interests 1.8 2.0 0.9 1.5 The accompanying notes are an integral part of these interim condensed consolidated financial statements. 28 Q2 Financial Results 2026 I Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Interim Consolidated Statements of Financial Position (Unaudited) Note 30 June 31 December CHF in millions 2026 2025 Assets Current assets: Cash and cash equivalents 99.8 273.2 Trade receivables 340.5 330.7 Financial assets 12 101.9 140.9 Tax receivables 4.3 5.5 Other current assets 8 302.8 270.6 Total current assets 849.3 1,020.9 Non-current assets: Property, plant and equipment 2,247.3 2,231.6 Goodwill 6,012.7 6,012.7 Intangible assets 723.2 934.5 Right-of-use assets 1,373.3 1,367.9 Financial assets 12 4.4 9.6 Investments 32.0 30.0 Deferred tax assets 17.8 15.3 Other non-current assets 8 74.9 102.2 Total non-current assets 10,485.6 10,703.8 Total assets 11,334.9 11,724.7 29 Q2 Financial Results 2026 I Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Note 30 June 31 December CHF in millions 2026 2025 Liabilities and Equity Liabilities Current liabilities: Accounts payable 245.2 328.7 Lease liabilities 183.2 181.4 Financial liabilities 12 548.9 558.8 Provisions 22.4 2.9 Tax liabilities 21.9 11.4 Other current liabilities 8 449.6 456.9 Total current liabilities 1,471.2 1,540.1 Non-current liabilities: Lease liabilities 1,100.9 1,095.8 Financial liabilities 12 4,620.8 4,598.0 Provisions 68.2 67.3 Defined benefit obligations 1.8 1.8 Deferred tax liabilities 84.3 115.4 Other non-current liabilities 8 216.9 230.6 Total non-current liabilities 6,092.9 6,108.9 Total liabilities 7,564.1 7,649.0 Equity: Ordinary share capital 7.4 7.4 Treasury shares (0.1) (0.1) Reserves 3,738.7 4,042.2 Equity attributable to the shareholders 3,746.0 4,049.5 Non-controlling interests 24.8 26.2 Total equity 3,770.8 4,075.7 Total liabilities and equity 11,334.9 11,724.7 The accompanying notes are an integral part of these interim condensed consolidated financial statements. 30 Q2 Financial Results 2026 I Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Interim Consolidated Statements of Changes in Equity (Unaudited) Actuarial gains/ (losses) from defined Total equity Currency benefit attributable Non- Ordinary Treasury Other translation plans, net of to controlling CHF in millions share capital stock reserves reserve taxes shareholders interests Total equity Balance at 1 January, 2025 7.2 (0.1) 4,615.9 (263.6) 1.4 4,360.8 26.1 4,386.9 Net income (loss) — — (56.7) — — (56.7) 1.8 (54.9) Other comprehensive income (loss), net of taxes — — — — 3.6 3.6 0.2 3.8 Total comprehensive income (loss) — — (56.7) — 3.6 (53.1) 2.0 (51.1) Share-based compensation — 0.1 20.2 — — 20.3 — 20.3 Repayment out of capital contribution reserves — — (240.4) — — (240.4) — (240.4) Other capital contributions (distributions) — — (0.9) — — (0.9) (2.1) (3.0) Balance at 30 June, 2025 7.2 — 4,338.1 (263.6) 5.0 4,086.7 26.0 4,112.7 Balance at 1 January, 2026 7.4 (0.1) 4,302.1 (263.6) 3.7 4,049.5 26.2 4,075.7 Net income (loss) — — (63.6) — — (63.6) 1.8 (61.8) Other comprehensive income (loss), net of taxes — — — 0.3 (1.5) (1.2) 0.0 (1.2) Total comprehensive income (loss) — — (63.6) 0.3 (1.5) (64.8) 1.8 (63.0) Share-based compensation — 0.0 12.2 — — 12.2 — 12.2 Repayment out of capital contribution reserves — — (250.9) — — (250.9) — (250.9) Dividend distribution to NCI — — — — — — (3.2) (3.2) Balance at 30 June, 2026 7.4 (0.1) 3,999.8 (263.3) 2.2 3,746.0 24.8 3,770.8 The accompanying notes are an integral part of these interim condensed consolidated financial statements. 31 Q2 Financial Results 2026 I Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Interim Consolidated Statements of Cash Flows (Unaudited) Six months ended 30 June Three months ended 30 June CHF in millions 2026 2025 2026 2025 Cash flows from operating activities: Net (loss) (61.8) (54.9) (22.4) (53.6) Income tax expense/(benefit) (13.6) (12.0) (2.9) (15.8) Share-based compensation expense 14.4 23.5 8.6 16.2 Depreciation of right-of-use assets 61.9 65.0 31.2 32.1 Depreciation and amortisation 431.8 456.2 217.8 222.8 Restructuring and other 28.5 7.1 1.0 5.3 Share of gains of equity method (2.0) (4.1) 0.0 (3.0) Financial income (58.6) (422.0) (37.3) (359.1) Financial expenses 181.6 530.9 94.8 456.7 Interest received — 1.5 — 0.5 Tax refunds 0.8 — 0.8 — Taxes paid (8.7) (21.2) (1.1) (9.8) Proceeds from sale of trade receivables 39.3 — 39.3 — Changes in operating assets and liabilities (146.5) (108.4) 37.5 (1.8) Net cash provided by operating activities 467.1 461.6 367.3 290.5 Cash flows from investing activities: Capital expenditures (128.3) (273.9) (45.5) (165.9) Advances to related parties (0.3) — — — Cash paid for other investing activities — (3.3) — — 32 Q2 Financial Results 2026 I Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Six months ended 30 June Three months ended 30 June CHF in millions 2026 2025 2026 2025 Net cash used in investing activities (128.6) (277.2) (45.5) (165.9) Cash flows from financing activities: Interest paid (143.5) (135.9) (18.7) (32.9) Net cash received (paid) for interest related derivative instruments 30.7 5.4 — 15.6 Repayment out of capital contribution reserves to Sunrise Communications AG shareholders (250.9) (240.4) (250.9) (240.4) Borrowing of debt 110.0 896.0 110.0 668.0 Vendor financing additions 138.8 188.4 52.6 97.6 Repayments of debt (110.0) (807.6) (110.0) (640.1) Principal payments on vendor financing (219.7) (174.2) (132.2) (41.2) Payment of lease liabilities (59.2) (54.7) (20.0) (19.4) Payment of financing costs and debt premiums (3.6) (9.2) (0.4) (3.4) Net cash received (paid) for principal related derivative instruments (0.3) (68.0) — (20.7) Cash (paid) for other financing activities (3.9) (1.9) (3.9) (1.9) Net cash used in financing activities (511.6) (402.1) (373.5) (218.8) Net (decrease) in cash and cash equivalents: (173.1) (217.7) (51.7) (94.2) Cash and cash equivalents at the beginning of the period 273.2 351.8 151.6 228.2 Effect of exchange rate changes on cash (0.3) (0.3) (0.1) (0.2) Cash and cash equivalents at the end of the period 99.8 133.8 99.8 133.8 The accompanying notes are an integral part of these interim condensed consolidated financial statements. 33 Q2 Financial Results 2026 I Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Notes to the Unaudited Interim Condensed Consolidated Financial Statements (1) General Information Sunrise Communications AG is a public company incorporated, domiciled and registered in Switzerland. The registered office of Sunrise Communications AG is located at Glattpark (Opfikon), Thurgauerstrasse 101b, 8152, Switzerland. These unaudited interim condensed consolidated financial statements for the three-month and six-month periods ended 30 June 2026 and 30 June 2025 cover Sunrise Communications AG, as parent company, and its subsidiaries (hereinafter collectively referred to as 'Sunrise' or 'the Group'). The Sunrise principal operating company, Sunrise GmbH, is a full-range telecommunications provider in Switzerland, offering mobile voice and data, landline services (retail and wholesale voice, business and integration services), video and landline Internet including Internet Protocol Television (IPTV) services to both residential and business customers as well as to other operators. Sunrise has its own national backbone landline and IP network and its own mobile network based on 4G and 5G technologies. In connection with the services it provides, Sunrise also resells handsets manufactured by third-party suppliers. These unaudited interim condensed consolidated financial statements reflect the Sunrise consideration of the accounting and disclosure implications of subsequent events through 19 August 2026. 34 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements (2) Basis of Preparation These condensed Consolidated Interim Financial Statements for the three months and six months ended 30 June 2026 have been prepared in accordance with IAS 34 Interim Financial Reporting, and should be read in conjunction with the last Annual Consolidated Financial Statements of Sunrise as at and for the year ended 31 December 2025 ('last annual financial statements'). They do not include all of the information required for a complete set of financial statements prepared in accordance with IFRS Accounting Standards. However, selected explanatory notes are included to explain events and transactions that are significant for an understanding of the changes in the Sunrise financial position and performance since the last annual financial statements. In preparing these Interim Condensed Consolidated Financial Statements, management has made judgements and estimates about the future that affect the application of accounting policies and the reported amounts of assets, liabilities, income and expense. Actual results may differ from these estimates. The significant judgements made by management in applying Sunrise accounting policies and the key sources of estimation uncertainty were the same as those described in the last annual financial statements. The following table summarises the principal exchange rates used by Sunrise (shown against CHF): 30 June 31 December 30 June 2026 2025 2025 Spot rates: Euro 1.0834 1.0739 1.0705 US Dollar 1.2366 1.2603 1.2591 Six months ended 30 June Three months ended 30 June 2026 2025 2026 2025 Average rates: Euro 1.0893 1.0628 1.0882 1.0680 US Dollar 1.2708 1.1623 1.2653 1.2112 (3) Material Accounting Policies These Interim Condensed Consolidated Financial Statements were prepared in accordance with the accounting policies described in the last annual financial statements and the amendments effective as of 1 January 2026 which are described below. Sunrise has not adopted early any standard, interpretation or amendment that has been issued but is not yet effective. Three new amendments exist for the first time in 2026, but are not applicable to these Consolidated Interim Financial Statements. Standard Name Effective from Amendment to IFRS 9 and IFRS 7 Classification and Measurement of Financial Instruments 1 January, 2026 Amendments to IFRS 1, 7, 9, 10 and IAS 7 Annual Improvements to IFRS Accounting Standards 1 January, 2026 Amendments to IFRS 9 and IFRS 7 Contracts Referencing Nature-dependent Electricity 1 January, 2026 As disclosed in the Group’s annual consolidated financial statements, the Group is assessing the impact of IFRS 18, which is effective from 1 January 2027. The Group continues to evaluate its impact. 35 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements (4) Segment Reporting Performance is measured based on Adjusted EBITDAaL as included in the internal financial For management purposes, Sunrise is organised into business units which reflect the reports reviewed by the CODM. This is considered an adequate measure of the operating different customer groups to which Sunrise provides its telecommunications products and performance of the segments reported to the CODM for the purposes of resource allocation services, and has the following three operating segments, which are its reportable segments: and performance assessment. Assets and liabilities are not allocated to operating segments in the management reports reviewed by the CODM, as the review focuses on adjusted • Residential Customers • Business Customers & Wholesale EBITDAaL. Sunrise depreciation and amortisation of property, plant and equipment and • Infrastructure & Support Functions intangible assets, share-based compensation, restructuring and other, finance income, finance expenses and income-tax expenses are reviewed on a total level, and are therefore The Board of Directors assumes the role of the Chief Operating Decision Maker ('CODM') and not allocated to operating segments. As Sunrise mainly operates in Switzerland, no monitors the operating results of the segments Residential Customers, Business Customers & geographical information is further presented. Wholesale and Infrastructure & Support Functions separately for the purpose of making decisions about resource allocation and performance assessment. Each of these segments engages in its particular business activity which is described below: • Residential Customers: Provides fixed-line and mobile services to residential end customers as well as sales of handsets. Sunrise focuses on selling its products in the Swiss telecommunications market by marketing bundled offers in fixed/Internet, mobile and IPTV. • Business Customers & Wholesale: Provides a full range of products and services, from fixed-line and mobile communications to Internet and data services as well as integration services to various business areas: small office and home office, small and medium-size managed enterprises and large corporate clients. The wholesale product portfolio covers voice, data, Internet and infrastructure services such as carrier and roaming services, which are marketed to business customers. • Infrastructure & Support Functions: Activities comprise support units such as network, IT and operations as well as staff functions like finance, human resources and strategy. 36 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Six months ended 30 June, 2026 Business Residential Infrastructure & CHF in millions Customers & Total Customers Support Functions Wholesale Total revenue 1,012.7 418.5 4.5 1,435.7 Direct costs (237.9) (140.4) (4.8) (383.1) 1 Indirect costs (198.1) (58.1) (214.3) (470.5) 2 Lease expense (26.4) (7.6) (57.8) (91.8) Adj. EBITDA after lease expense (EBITDAaL) 550.3 212.4 (272.4) 490.3 Depreciation and amortisation of property, plant and equipment and intangible assets (431.8) Share-based compensation (14.4) Restructuring and other (28.5) 3 Finance income/(expense) (91.0) Income tax benefit 13.6 Net income (loss) (61.8) 1 Includes other operating income and capitalised labour and excludes expenses for share-based compensation, restructuring and other. 2 Contains depreciation and interest expenses for lease arrangements under IFRS 16. Excludes expenses for short-term leases, which are reported in line Indirect costs . 3 Includes share of gains (losses) of equity-method investments and excludes interest expenses for leases, which are included in line Lease expense . 37 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Six months ended 30 June, 2025 Business Residential Infrastructure & CHF in millions Customers & Total Customers Support Functions Wholesale Total revenue 1,041.6 408.8 3.3 1,453.7 Direct costs (234.3) (135.3) (6.4) (376.0) 1 Indirect costs (206.1) (60.1) (221.8) (488.0) 2 Lease expense (25.5) (6.0) (64.1) (95.6) Adj. EBITDA after lease expense (EBITDAaL) 575.7 207.4 (289.0) 494.1 Depreciation and amortisation of property, plant and equipment and intangible assets (456.2) Share-based compensation (23.5) Restructuring and other (7.0) 3 Finance income/(expense) (74.3) Income tax benefit 12.0 Net income (loss) (54.9) ¹Includes other operating income and capitalised labour and excludes expenses for share-based compensation, restructuring and other. ²Contains depreciation and interest expenses for lease arrangements under IFRS 16. Excludes expenses for short-term leases, which are reported in line Indirect costs . ³Includes share of gains (losses) of equity-method investments and excludes interest expenses for leases, which are included in line Lease expense . 38 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Three months ended 30 June, 2026 Business Residential Infrastructure & CHF in millions Customers & Total Customers Support Functions Wholesale Total revenue 499.5 209.0 4.4 712.9 Direct costs (116.7) (71.8) (3.6) (192.1) 1 Indirect costs (96.3) (28.4) (105.4) (230.1) 2 Lease expense (13.3) (3.8) (29.2) (46.3) Adj. EBITDA after lease expense (EBITDAaL) 273.2 105.0 (133.8) 244.4 Depreciation and amortisation of property, plant and equipment and intangible assets (217.8) Share-based compensation (8.6) Restructuring and other (1.0) 3 Finance income/(expense) (42.3) Income tax benefit 2.9 Net income (loss) (22.4) ¹Includes other operating income and capitalised labour and excludes expenses for share-based compensation, restructuring and other. ²Contains depreciation and interest expenses for lease arrangements under IFRS 16. Excludes expenses for short-term leases, which are reported in line Indirect costs . ³Includes share of gains (losses) of equity-method investments and excludes interest expenses for leases, which are included in line Lease expense . 39 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Three months ended 30 June, 2025 Business Residential Infrastructure & CHF in millions Customers & Total Customers Support Functions Wholesale Total revenue 521.3 208.0 2.3 731.6 Direct costs (117.1) (71.1) (3.5) (191.7) 1 Indirect costs (95.3) (30.6) (112.6) (238.5) 2 Lease expense (12.8) (3.2) (31.3) (47.3) Adj. EBITDA after lease expense (EBITDAaL) 296.1 103.1 (145.1) 254.1 Depreciation and amortisation of property, plant and equipment and intangible assets (222.8) Share-based compensation (16.2) Restructuring and other (5.2) 3 Finance income/(expense) (79.3) Income tax benefit 15.8 Net income (loss) (53.6) 1 Includes other operating income and capitalised labour and excludes expenses for share-based compensation, restructuring and other. 2 Contains depreciation and interest expenses for lease arrangements under IFRS 16. Excludes expenses for short-term leases, which are reported in line Indirect costs . 3 Includes share of gains (losses) of equity-method investments and excludes interest expenses for leases, which are included in line Lease expense . 40 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements (5) Revenue from Customers Revenue by major category and reportable segment is set forth below: Six months ended 30 June, 2026 Business Residential Infrastructure & CHF in millions Customers & Total Customers Support Functions Wholesale Fixed: 459.4 239.4 — 698.8 Subscription 437.7 154.1 — 591.8 Non-subscription and hardware 21.7 85.3 — 107.0 Mobile: 500.6 174.7 — 675.3 Subscription 405.1 134.5 — 539.6 Non-subscription and hardware 95.5 40.2 — 135.7 Other: 52.7 4.4 4.5 61.6 Total 1,012.7 418.5 4.5 1,435.7 Six months ended 30 June, 2025 Business Residential Infrastructure & CHF in millions Customers & Total Customers Support Functions Wholesale Fixed: 496.8 238.2 — 735.0 Subscription 476.9 153.4 — 630.3 Non-subscription and hardware 19.9 84.8 — 104.7 Mobile: 494.9 169.0 — 663.9 Subscription 408.1 133.2 — 541.3 Non-subscription and hardware 86.8 35.8 — 122.6 Other: 49.9 1.6 3.3 54.8 Total 1,041.6 408.8 3.3 1,453.7 41 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Three months ended 30 June, 2026 Business Residential Infrastructure & CHF in millions Customers & Total Customers Support Functions Wholesale Fixed: 225.9 120.8 — 346.7 Subscription 216.8 76.9 — 293.7 Non-subscription and hardware 9.1 43.9 — 53.0 Mobile: 246.5 86.5 — 333.0 Subscription 202.7 67.5 — 270.2 Non-subscription and hardware 43.8 19.0 — 62.8 Other: 27.1 1.7 4.4 33.2 Total 499.5 209.0 4.4 712.9 Three months ended 30 June, 2025 Business Residential Infrastructure & CHF in millions Customers & Total Customers Support Functions Wholesale Fixed: 245.9 120.8 — 366.7 Subscription 237.5 77.0 — 314.5 Non-subscription and hardware 8.4 43.8 — 52.2 Mobile: 249.8 86.3 — 336.1 Subscription 206.3 67.4 — 273.7 Non-subscription and hardware 43.5 18.9 — 62.4 Other: 25.6 0.9 2.3 28.8 Total 521.3 208.0 2.3 731.6 42 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Subscription revenue Sunrise recognises service revenue from mobile and fixed services over the contractual period. Installation or activation fees related to the services provided are deferred as contract liabilities and recognised over the contractual period. Revenue from the sale of prepaid services is deferred and recognised at the time of use. Discounts that can be allocated to service revenues are evenly distributed over the minimum contract binding period. Mobile subscriptions have no contract term beyond a 60-day notice period, whereas residential services require a minimum contract term of 12 months. For contracts combined with a promotion, the typical minimum contract term is 24 months. For B2B service contracts, the contract term is typically between one and five years. Non-subscription and hardware Non-subscription revenues include mainly revenue from hardware sales, which are recognised at point-in-time upon delivery. Revenue from carrier and roaming services offered to medium-size and large enterprises and from fixed-line and mobile services on a wholesale basis to other operators are recognised over the contractual period. Other Other revenue includes mainly fees and ancillary revenues. Reminder fees are recognised at a point-in-time when the fee becomes due. Net collectible fees earned from early termination of contracts are recognised when collected. Other revenue also includes revenue from sales of built-to-suit network sites which is recognised at point-in-time when the sites are available for use and legal ownership is transferred and it further includes revenue from subleases which is recognised over time. 43 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements (6) Other Operating Income and Expenses Six months ended 30 June Three months ended 30 June 4 4 CHF in millions 2026 2025 2026 2025 Marketing & commissions (99.0) (98.5) (47.3) (47.0) Network related costs (62.5) (66.1) (31.6) (32.0) Professional services (30.0) (36.0) (14.9) (15.2) Facility & energy (29.5) (31.6) (14.6) (15.7) IT expenses (34.4) (47.6) (19.4) (23.2) Administration (19.3) (20.5) (9.6) (10.0) Call centre services (21.1) (21.7) (10.2) (10.4) Allowance for receivables (10.7) (7.4) (6.2) (6.9) Restructuring expenses (27.8) (4.9) — (3.1) Other expenses 3.1 3.5 2.9 (0.5) Total other operating expenses (331.2) (330.8) (150.9) (164.0) Capitalised labour as non-current assets 30.1 31.3 14.8 15.8 Total other operating income and capitalised labour 30.1 31.3 14.8 15.8 Other operating expenses During the six-month period ended 30 June 2026 expenditures for professional services decreased by CHF 6.0 million compared to the same period in 2025, primarily due to lower consultancy-related spend. IT expenses have decreased by CHF 13.2 million compared to the six-month period ended 30 June 2025, primarily due to lower project-related spend. The allowance for receivables increased by CHF 3.3 million during the six-month period compared to the previous-year period, primarily due to a change of estimate in the allowance for receivables model in Q1 2025. During the six-month period ended 30 June 2026 restructuring expenses increased by CHF 22.9 million compared to the same period in 2025, mainly due to personnel expenses as a result of the restructuring in Q1 2026 which led to an employee reduction of 147. The other expenses are mainly driven by subsequent reductions in historic cost. The categories disclosed for other operating expenses do not include expenses that were included in other financial-statement line items (such as personnel expenses or depreciation). 4 Reclassified to conform with 2026 presentation of other operating expenses hierarchy (details on next page). 44 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Changes in other operating expenses hierarchy As of Q4 2025, there have been adjustments in the other operating expenses hierarchy. This change reflects a refinement of the other operating expenses hierarchy based on the ways in which management analyses and steers the business. Consequently, the 2025 amounts shown in the table above include the following reclassifications: Six months ended 30 June Three months ended 30 June CHF in millions 2025 2025 Marketing & commissions 0.0 0.1 Network related costs 3.5 1.4 Professional services 10.1 5.3 Facility & energy 1.2 0.7 IT expenses (13.1) (6.4) Administration (2.8) (1.6) Call centre services (1.5) (0.7) Allowance for receivables 2.0 1.0 Restructuring expenses — — Other expenses 0.6 0.2 Total other operating expenses —— 45 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements (7) Earnings per Share The earnings-per-share calculation uses the weighted average number of shares in issue during the period. The equity awards granted but not yet vested do not impact the diluted earnings per share, as the effect is anti-dilutive for 2025 and 2026 due to the net losses of Sunrise for the six months ended 30 June 2025 and 2026. Six months ended 30 June, 2026 Three months ended 30 June, 2026 Class A Class B Class A Class B Allocation of net income (loss) attributable to Sunrise share classes (in CHF million) (61.4) (2.2) (22.5) (0.8) Weighted average number of shares outstanding 70,413,221 25,566,624 70,660,601 25,507,345 Adjusted weighted average of shares outstanding 70,413,221 25,566,624 70,660,601 25,507,345 Basic and diluted earnings (loss) per share (in CHF) (0.9) (0.1) (0.3) (0.0) Six months ended 30 June, 2025 Three months ended 30 June, 2025 Class A Class B Class A Class B Allocation of net income (loss) attributable to Sunrise share classes (in CHF million) (54.7) (2.0) (53.1) (2.0) Weighted average number of shares outstanding 69,147,746 25,901,100 69,415,747 25,865,321 Adjusted weighted average of shares outstanding 69,147,746 25,901,100 69,415,747 25,865,321 Basic and diluted earnings (loss) per share (in CHF) (0.8) (0.1) (0.8) (0.1) 46 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements The number of shares outstanding is shown in absolute units below, rather than time-weighted units. 2026 Class A Class B Shares outstanding as of 31 December, 2025 70,108,614 25,805,386 Shares distributed from treasury shares 681,357 — Shares transferred between share classes 29,804 (298,041) Shares outstanding as of 30 June 70,819,775 25,507,345 2025 Class A Class B Shares outstanding as of 31 December, 2024 68,858,888 25,977,316 Shares distributed from treasury shares 768,381 — Shares transferred between share classes 13,852 (138,520) Shares outstanding as of 30 June 69,641,121 25,838,796 47 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements (8) Other Operating Assets and Liabilities The details of other current and non-current assets and other current and non-current liabilities of Sunrise are set forth below: 30 June 31 December CHF in millions 2026 2025 Other assets - current: Third party receivables 37.6 37.9 Prepayments 106.6 83.9 Contract assets 5.6 5.0 Contract costs 67.8 64.5 Inventories 57.6 51.9 Other 27.6 27.4 Total 302.8 270.6 Other assets - non-current: Trade receivables 27.9 35.5 Prepayments 30.7 43.2 Contract assets 3.0 4.9 Contract costs 12.5 18.0 Other 0.8 0.6 Total 74.9 102.2 Other liabilities - current: Accrued other liabilities 236.2 252.7 Accrued capital expenditures 49.0 59.2 Accrued payroll and employee benefits 35.5 44.4 Deferred revenue 97.3 66.2 Other 31.6 34.4 Total 449.6 456.9 Other liabilities - non-current: Other 216.9 230.6 Total 216.9 230.6 48 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Inventories Write-downs of inventories to the net realisable value totalled CHF 1.4 million at 30 June 2026 (Q2 YTD 2025: CHF 1.1 million). The value of inventories recognised as an expense in direct costs and other operating expenses totalled CHF 108.1 million (Q2 YTD 2025: CHF 91.6 million). No inventories were expected to be sold after more than one year. Property, plant and equipment and intangible assets During the six-month period ended 30 June 2026, Sunrise acquired assets of CHF 235.2 million (thereof acquired under vendor financing CHF 120.1 million) (Q2 YTD 2025: CHF 262.5 million, thereof acquired under vendor financing CHF 31.9 million). Prepayments - non-current and current Non-current prepayments decreased CHF 12.5 million driven by network prepayments reclassified to current prepayments. Current prepayments increased by CHF 22.7 million driven by reclassification from non-current as well as new prepayments mainly relating to Network and IT. Other liabilities - non-current and current As of 30 June 2026, the non-current liabilities balance related to broadcasting rights is CHF 211.3 million (31 December 2025: CHF 227.2 million). During the six-month period ended 30 June 2026, deferred revenue increased by CHF 31.1 million primarily due to the annual advance billing of certain service arrangements, which typically occurs on a seasonal basis in the first quarter. (9) Commitments and Contingencies The total contractual and purchase commitments as of 30 June 2026 amounted to CHF 775.0 million (31 December 2025: CHF 725.5 million ) including future investments in property, plant and equipment and intangible assets. Sunrise also has commitments pursuant to agreements with, and obligations imposed by, authorities, which may include obligations in certain markets to move aerial cables to underground ducts or to upgrade, rebuild or extend portions of the Sunrise broadband communication systems. Such amounts are not fixed or determinable. Sunrise is party to certain pending lawsuits and cases with public authorities and complaint boards. Based on a legal assessment of the possible outcome of each of these lawsuits and cases, management is of the opinion that these will not have a significant or adverse effect on the Sunrise Statements of Financial Position. 49 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements (10) Borrowings The CHF equivalents of the components of third-party debt are as follows: 30 June, 2026 Principal amount 30 June 31 December Weighted Average Unused Borrowing 5 Interest Rate (%) Capacity CHF in millions 2026 2025 Sunrise Holding Bank facilities 6.32% 485.8 1,576.9 1,547.2 Sunrise Holding SPE notes 4.60% — 2,151.3 2,143.3 Sunrise Holding Senior notes 3.88% — 265.7 268.0 Vendor financing 1.99% — 436.1 387.2 Total third-party debt before deferred financing costs, discounts, premiums and accrued interest 4.91% 485.8 4,430.0 4,345.7 The following table provides a reconciliation of total third-party debt before deferred financing costs, discounts, premiums and accrued interest to total debt including interest: 30 June 31 December 2026 2025 Total third-party debt before deferred financing costs, discounts, premiums and accrued interest: 4,430.0 4,345.7 Deferred financing costs, discounts and premiums, net (7.4) (8.5) Total carrying amount of third-party debt 4,422.6 4,337.2 Accrued interest on third-party debt 98.1 98.5 Total debt including interest 4,520.7 4,435.7 Current portion of debt 534.2 485.7 Non-current portion of debt 3,986.5 3,950.0 5 Represents the weighted average interest rate in effect at 30 June 2026 for all borrowings outstanding pursuant to each debt instrument, including any applicable margin. The interest rates presented represent stated rates and do not include the impact of derivative instruments, deferred financing costs, original issue premiums or discounts and commitment fees. Including the effects of derivative instruments, but excluding the impact of original issue premiums, discounts, deferred financing costs, vendor financing and commitment fees, the weighted average interest rate on Sunrise aggregate third-party variable- and fixed-rate indebtedness was 2.7% at 30 June 2026. The weighted average interest rate calculation includes principal amounts outstanding associated with all Sunrise secured and unsecured borrowings. 50 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Sunrise Holding Bank facility The Sunrise Holding Bank facility is the senior secured credit facility of certain consolidated entities of Sunrise. The details of Sunrise borrowings under the Sunrise Holding Bank facility are summarised in the following tables: Six months ended 30 June, 2026 Sunrise Holding Bank Facility Amount (in Outstanding Principal Unused Borrowing Maturity Interest Rate Carrying Value facilities Borrowing Currency) Amount Capacity in millions CHF millions AAA 15 February 2032 Term SOFR + 2.5% $1,950.0 1,576.9 — 1,570.6 Revolving Facility B 31 March 2031 SARON + 2.0% CHF500.0 — 485.8 — Total 1,576.9 485.8 1,570.6 Year ended 31 December, 2025 Sunrise Holding Bank Facility Amount (in Outstanding Principal Unused Borrowing Maturity Interest Rate Carrying Value facilities Borrowing Currency) Amount Capacity in millions CHF millions AAA 15 February 2032 Term SOFR + 2.5% $1,950.0 1,547.2 — 1,540.5 Revolving Facility B 31 March 2031 SARON + 2.0% CHF500.0 — 485.7 — Total 1,547.2 485.7 1,540.5 The Sunrise Holding Revolving Facility provides for maximum borrowing capacity of CHF The Original Margin depends on meeting the conditions and targets in the Sunrise 500.0 million, including CHF 37.5 million under the related ancillary facility. With the Sustainability Report and ESG Certificate. These must be shared with the Facility Agent from exception of CHF 14.2 million of borrowings under the ancillary facility (which are blocked as the financial year ending 31 December 2026 to 31 December 2031. financial guarantees), the Sunrise Holding Revolving Facility was undrawn at 30 June 2026. The proceeds from Facility AAA were applied directly to settle the previous facilities and did Financing transactions not involve the movement of cash through the Group’s bank accounts. Consequently, the On 13 February 2025, the Group refinanced USD 1,045 million of Facility AX and partially transaction's complete effect is not immediately apparent within the Statements of Cash repaid EUR 177.6 million of Facility AY through the drawdown of a new USD 1,300 million term Flows. loan (“Facility AAA”). On 6 May 2025 the Group cancelled the remaining EUR 10 million commitment under its Under the terms of the Additional Facility AAA Accession Agreement to Sunrise Financing former Facility A, and on 8 May 2025 it cancelled EUR 33.3 million of commitments under its Partnership, Facility AAA was issued at 99.75% of par and bears interest at a rate of Term former Facility B. On 30 June 2025 the Group amended Facility B, replacing the prior SOFR +2.50% (the Original Margin) per annum and is due on 15 February 2032. EUR 720.0 million revolving commitment (maturing September 2029) with a CHF 500 million facility (maturing March 2031), transitioning pricing from EURIBOR + 2.5% to SARON + 2.0%. 51 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements On 28 May 2025, the Group issued EUR 550.0 million of Senior Secured Notes maturing Concurrently, on 9 October 2025, the Group entered into an additional USD 650.0 million 15 May 2032 through its subsidiary Sunrise FinCo I BV and applied the proceeds in full to term loan under its Term Loan Facility AAA, maturing 15 February 2032, and applied the refinance its existing Term Loans AU and AY. Under the Notes Subscription Agreement, the proceeds to refinance the remaining balance of Term Loan AT. Notes were issued at 100% of par, bear interest at a fixed rate of 4.625% per annum payable On 13 November 2025, the Group fully redeemed USD 75.0 million of 5.5% Senior Notes due semi-annually in arrears on 15 January and 15 July, and are listed on The International Stock 2028 issued by its subsidiary Sunrise HoldCo IV BV. The redemption was made at par, and the Exchange. outstanding principal balance of the notes was reduced to zero. Interest accrued at a fixed On 9 October 2025, the Group issued EUR 385.0 million of additional 4.625% Senior Secured rate of 5.5% per annum was paid in connection with the redemption. Notes maturing 15 May 2032 through its subsidiary Sunrise FinCo I BV and applied the On 10 December 2025, the Group partially repaid EUR 56.8 million of Senior Secured Notes proceeds to refinance existing debt, including Term Loan AT and a portion of the USD 5.5% due 2029 issued by its subsidiary UPCB Finance VII Limited. Following the repayment, the Senior Notes due 2028. Under the Notes Subscription Agreement, the Notes were issued at outstanding principal balance of the notes was reduced from EUR 374.9 million to EUR 318.1 100.125% of par, bear interest at a fixed rate of 4.625% per annum payable semi-annually in million. Interest accrued at a fixed rate of 3.625% per annum was paid in connection with the arrears on 15 January and 15 July, and are listed on The International Stock Exchange. repayment. All outstanding borrowings are classified as non-current as of 30 June 2026. Six months ended 30 June, 2026 Outstanding principal amount Sunrise Holding SPE Maturity Interest Rate Original Issue Amount Borrowing Currency CHF Equivalent Carrying Value CHF notes in millions 2031 Sunrise holding 15 July 2031 4.88% $1,250.0 $1,230.0 994.6 994.2 senior secured notes UPCB finance VII euro 15 June 2029 3.63% €600.0 €318.1 293.7 293.3 notes Sunrise FinCo I B.V. 15 May 2032 4.63% €935.0 €935.0 863.0 862.8 4.625% 2032 (€) Total 2,151.3 2,150.3 52 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements Year ended 31 December, 2025 Outstanding principal amount Sunrise Holding SPE Maturity Interest Rate Original Issue Amount Borrowing Currency CHF Equivalent Carrying Value CHF notes in millions 2031 Sunrise holding 15 July 2031 4.88% $1,250.0 $1,230.0 975.9 975.5 senior secured notes UPCB finance VII euro 15 June 2029 3.63% €600.0 €318.1 296.3 295.8 notes Sunrise FinCo I B.V. 15 May 2032 4.63% €935.0 €935.0 871.1 870.0 4.625% 2032 (€) Total 2,143.3 2,141.3 The Sunrise Holding SPE notes are non-callable prior to their respective call date (as compliance with certain consolidated net leverage ratios, as well as restrictions with regard specified under the applicable indenture). If, however, at any time prior to the applicable to the ability to sell certain assets. Also, in the case of a change of control, Sunrise must call date, all or a portion of the loans under the related Funded Facility are voluntarily repurchase the relevant notes at a redemption price of 101%. Covenants are tested on a prepaid (an 'SPE Early Redemption Event'), then the Sunrise Holding SPE will be required to quarterly basis. redeem an aggregate principal amount of its respective Sunrise Holding SPE notes equal to the aggregate principal amount of the loans prepaid under the relevant Funded Facility. In general, the redemption price payable will equal 100% of the principal amount of the applicable Sunrise Holding SPE notes to be redeemed and a make-whole premium, which is the present value of all remaining scheduled interest payments to the applicable call date using the discount rate as of the redemption date plus a premium (as specified in the applicable indenture). Upon the occurrence of an SPE Early Redemption Event on or after the applicable call date, the Sunrise Holding SPE will redeem an aggregate principal amount of its respective Sunrise Holding SPE notes equal to the principal amount prepaid under the related Funded Facility at a redemption price (expressed as a percentage of the principal amount) plus accrued and unpaid interest and additional amounts (as specified in the applicable indenture), if any, to the applicable redemption date. Sunrise Holding senior notes Sunrise has issued certain senior notes that rank equally with all of the existing senior debt of such issuer and are senior to all existing subordinated debt of such issuer and which are secured by a pledge over the shares of Sunrise HoldCo IV. In addition, the indentures governing Sunrise senior notes contain customary incurrence-based covenants such as 53 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements The details of the Sunrise Holding senior notes are summarised in the following tables: Six months ended 30 June, 2026 Outstanding principal amount Sunrise Holding Senior Maturity Interest Rate Original Issue Amount Borrowing Currency CHF Equivalent Carrying Value CHF notes in millions 3.875% senior notes 15 June 2029 3.88% €635.0 €287.9 265.7 265.6 Total 265.7 265.6 Year ended 31 December, 2025 Outstanding principal amount Sunrise Holding Senior Maturity Interest Rate Original Issue Amount Borrowing Currency CHF Equivalent Carrying Value CHF notes in millions 3.875% senior notes 15 June 2029 3.88% €635.0 €287.9 268.0 267.8 Total 268.0 267.8 Transfers of financial assets – Airtime-receivable securitisation In June 2026, the Group sold trade receivables related to mobile services with gross carrying amounts of CHF 40.2 million (Q2 YTD 2025: CHF nil) to a third-party financial institution. The receivables were sold at par and derecognised because the Group transferred substantially all credit risk and surrendered control. The Group has no continuing involvement in the transferred receivables as defined in IFRS 7.The transferred receivables are derecognised upon sale and subsequent customer collections are received by the financial institution. The transaction is presented in the Statements of Financial Position through the derecognition of the trade receivables and the recognition of the related consideration received as an increase in cash and cash equivalents (net of any contractual discounts and fees). Cash proceeds of CHF 39.3 million (Q2 YTD 2025 : CHF nil) are presented in the Statements of Cash Flows under proceeds from sale of trade receivables within cash flows from operating activities in 2026. 54 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements (11) Financial Income and Expenses Six months ended 30 June Three months ended 30 June CHF in millions 2026 2025 2026 2025 Finance income: Interest income 0.6 1.5 0.3 0.5 Realised and unrealised gains on derivative instruments 56.9 — 35.9 — Foreign currency transaction gains — 418.5 — 356.6 Other gains, net 1.1 2.0 1.1 2.0 Total 58.6 422.0 37.3 359.1 Finance expenses: Interest expense (141.9) (160.6) (71.4) (77.7) Realised and unrealised losses on derivative instruments — (355.0) — (367.0) Foreign currency transaction losses (38.6) — (22.5) — Losses on debt modification and extinguishment (0.5) (14.9) (0.3) (12.0) Other financial expense (0.6) (0.4) (0.6) — Total (181.6) (530.9) (94.8) (456.7) 55 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements (12) Fair Value Estimation significant to the fair-value measurement as a whole) at the end of each reporting period. The fair value of Sunrise debt instruments is generally determined using the average of There were no transfers between the different hierarchy levels in 2026 and 2025. applicable bid and ask prices. The fair value of financial instruments that are not traded in an active market is determined by using valuation techniques. These valuation techniques The fair values of financial assets and financial liabilities are summarised in the following table. maximise the use of observable market data if available and rely as little as possible on entity- Not included therein are certain financial assets and liabilities whose carrying amount specific estimates. If all significant inputs required to calculate the fair value of an instrument corresponds to a reasonable estimation of their fair value, measured at amortised cost. These are observable, the instrument is included in Level II. include cash and cash equivalents, trade receivables, accrued liabilities, lease liabilities and trade payables, as well as other receivables and liabilities whose carrying amount corresponds For assets and liabilities that are recognised in the financial statements at fair value on a to a reasonable estimation of their fair value. recurring basis, Sunrise determines whether transfers have occurred between levels in the hierarchy by re-assessing the categorisation (based on the lowest-level input that is 30 June 31 December 2026 2025 Carrying Carrying CHF in millions Fair Value Level Fair Value Fair Value Amount Amount Current assets carried at FVTPL: Derivative financial instruments II 101.9 101.9 140.9 140.9 Non-current assets carried at FVTPL: Derivative financial instruments II 4.4 4.4 9.6 9.6 Total financial assets 106.3 106.3 150.5 150.5 Current liabilities carried at FVTPL: Derivative financial instruments II 14.7 14.7 73.1 73.1 Non-current liabilities carried at FVTPL: Derivative financial instruments II 634.3 634.3 648.0 648.0 Non-current liabilities carried at amortised cost: Third-party debt I 3,986.5 3,961.7 3,950.0 3,982.3 Total financial liabilities 4,635.5 4,610.7 4,671.1 4,703.4 56 Q2 Financial Results 2026 I Notes to the Consolidated Statements

Financial Review Consolidated Statements Notes to the Consolidated Statements Financial Review Consolidated Statements Notes to the Consolidated Statements The financial liabilities presented in the Statements of Financial Position comprise the Group’s borrowings and accrued interest (Note 10) and fair value estimation (Note 12). The carrying amounts of these financial liabilities reconcile to the amounts disclosed in Notes 10 and 12. 30 June 2026 31 December 2025 Non- Non- CHF in millions Current Total Current Total Current Current Financial liabilities Third-party debt incl. vendor financing (Note 10) 436.1 3,986.5 4,422.6 387.2 3,950.0 4,337.2 Accrued interest on third-party debt 98.1 — 98.1 98.5 — 98.5 Derivative financial instruments 14.7 634.3 649.0 73.1 648.0 721.1 Total financial liabilities 548.9 4,620.8 5,169.7 558.8 4,598.0 5,156.8 (13) Events after the Balance Sheet Date On 22 July 2026, Sunrise announced the successful pricing of EUR 500 million Senior Secured Notes due 2033. The proceeds will be used to fully refinance the existing EUR 3.875% Senior Unsecured Notes due 2029 and partially refinance the existing EUR 3.625% Senior Secured Notes due 2029, with the remaining balance expected to be repaid during the second half of 2026 from operating cash flows. The transaction further extends the Group’s debt maturity profile, with substantially all of the Group’s debt maturing in 2031 or thereafter. Under IFRS, this is considered a non-adjusting event after the reporting period. 57 Q2 Financial Results 2026 I Notes to the Consolidated Statements

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