NB Bancorp (NBBK) boosts Q2 earnings and sets $0.07 dividend

Rhea-AI Filing Summary

NB Bancorp, Inc., holding company for Needham Bank, reported strong results for the quarter ended June 30, 2026. Net income was $21,123 thousand and diluted EPS was $0.53, up from $14,984 thousand and $0.36 in the prior quarter. Net interest income rose to $69,145 thousand, with net interest margin expanding to 4.00%. Noninterest income increased to $5,559 thousand, while the efficiency ratio improved to 58.92%. Through the first half of 2026, total loans and deposits have increased by 15.0% and 15.9% on an annualized basis, and operating EPS increased 24%.

The balance sheet continued to scale, with total assets of $7,446,880 thousand, loans of $6,482,821 thousand and deposits of $6,320,090 thousand at quarter-end. Asset quality metrics remained favorable: non-performing loans were 0.43% of total loans, and the allowance for credit losses covered 296.8% of non-performing loans. Management highlighted ongoing investments in technology and artificial intelligence to support scalable growth. The board declared a quarterly cash dividend of $0.07 per share, payable August 19, 2026 to shareholders of record on August 5, 2026.

Positive

• Quarterly net income rose 41.0% sequentially to $21,123 thousand, with diluted EPS up 47.2% to $0.53 and net interest margin improving to 4.00%.

Negative

• None.

Filing Explained

At June 30, 2026, the common-share base was 43,818,490 and commercial-real-estate exposure was $2.69 billion.

The July 22 Form 8-K records the completed June 30, 2026 balance-sheet snapshot: 43,818,490 common shares were outstanding, versus 44,765,178 at March 31, 2026.

That lower reported share base changes the common-share denominator used in per-share reporting.

The filing also discloses a $2.69 billion commercial-real-estate portfolio at June 30.

The commercial-real-estate portfolio increased by 9% during the quarter, while total shareholders’ equity was down from March 31.

8-K Event Classification

4 items: 2.02, 7.01, 8.01, 9.01

4 items

Item 2.02 Results of Operations and Financial Condition Financial

Disclosure of earnings results, typically an earnings press release or preliminary financials.

Item 7.01 Regulation FD Disclosure Disclosure

Material non-public information disclosed under Regulation Fair Disclosure, often investor presentations or guidance.

Item 8.01 Other Events Other

Voluntary disclosure of events the company deems important to shareholders but not covered by other items.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Key Figures

Net income: $21,123 (thousands) Diluted EPS: $0.53 Net interest income: $69,145 (thousands) +5 more

8 metrics

Net income $21,123 (thousands) For the quarter ended June 30, 2026

Diluted EPS $0.53 For the quarter ended June 30, 2026

Net interest income $69,145 (thousands) For the quarter ended June 30, 2026, up 6.6% from the prior quarter

Net interest margin 4.00% Quarter ended June 30, 2026; 3.93% in the prior quarter

Total assets $7,446,880 (thousands) Balance sheet at June 30, 2026

Total loans $6,482,821 (thousands) Balance sheet at June 30, 2026; loans grew 3.4% during the quarter

Total deposits $6,320,090 (thousands) Balance sheet at June 30, 2026; deposits grew 3.7% during the quarter

Quarterly dividend $0.07 per share Payable August 19, 2026 to shareholders of record on August 5, 2026

Key Terms

pre-provision net revenue, allowance for credit losses, net interest margin, tangible book value per share, +1 more

5 terms

pre-provision net revenue financial

"Total pre-provision net revenue (net interest income plus total noninterest income)"

Pre-provision net revenue is a bank’s income from core operations — interest earned minus interest paid plus fees and other operating income, after operating costs — measured before setting aside funds for potential loan losses. Investors use it to gauge how well a bank’s everyday business generates money independent of one-time loss reserves, like judging a store’s sales and operating profit before accounting for an expected number of returned items.

allowance for credit losses financial

"Allowance for credit losses at end of the period"

Allowance for credit losses is a reserve set aside by a financial institution to cover potential losses from borrowers who may not repay their loans. It acts like a safety net, helping the institution prepare for loans that might turn sour. For investors, it signals how cautious the institution is about the quality of its loans and potential risks to its financial health.

net interest margin financial

"Net interest margin represents net interest income divided by average total interest-earning assets."

Net interest margin measures how much a bank earns from lending and investing compared with what it pays for funding, expressed as a percentage of its interest-earning assets. Think of it like a grocery store’s markup: it shows the gap between buying cost and selling price per dollar of goods — here, the cost is interest paid and the sale is interest received. Investors watch it because a higher margin usually means a bank is more profitable and better at managing interest rate and credit conditions.

tangible book value per share financial

"Tangible book value per share (non-GAAP) | $ | 18.51"

Tangible book value per share is the company's total physical and financial assets minus its liabilities and intangible items (like goodwill and brand value), divided by the number of outstanding shares. It gives investors a conservative, per‑share estimate of what would remain if the business sold only its hard assets and paid its debts—useful for judging whether a stock is priced above or below its underlying, tangible worth, like valuing a property by its bricks and cash rather than its reputation.

non-performing PCD loans financial

"Total non-performing PCD loans to total loans"

Earnings Snapshot

Net income: $21,123 (thousands)

Quarter ended June 30, 2026

Net income $21,123 (thousands) up 41.0% versus the prior quarter and 44.9% versus the prior year quarter

Diluted EPS $0.53 up 47.2% versus the prior quarter and 35.9% versus the prior year quarter

Net interest income $69,145 (thousands) up 6.6% versus the prior quarter and 47.1% versus the prior year quarter

Total assets $7,446,880 (thousands) up 3.0% from March 31, 2026 and 42.5% from June 30, 2025

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Available on EDGAR 07/22/2026 - 04:31 PM Accepted by SEC EDGAR 07/22/2026 - 04:30 PM Learn about SEC filing dates

FAQ

What were NB Bancorp (NBBK) earnings for the quarter ended June 30, 2026?

NB Bancorp reported net income of $21,123 thousand and diluted EPS of $0.53 for Q2 2026. Net interest income was $69,145 thousand and noninterest income was $5,559 thousand, reflecting both spread and fee-based revenue growth.

What dividend did NB Bancorp (NBBK) declare in July 2026?

The board declared a quarterly cash dividend of $0.07 per share, payable on August 19, 2026 to shareholders of record as of August 5, 2026. This dividend follows the company’s strong second-quarter earnings performance.

How did NB Bancorp’s (NBBK) loans and deposits change in Q2 2026?

Total loans reached $6,482,821 thousand and deposits reached $6,320,090 thousand at June 30, 2026. During the quarter, loans grew 3.4% and deposits grew 3.7%, while first-half 2026 annualized growth was 15.0% for loans and 15.9% for deposits.

What were NB Bancorp (NBBK) key profitability ratios in Q2 2026?

Return on average assets was 1.17% and return on average shareholders’ equity was 10.03% in Q2 2026. Net interest margin improved to 4.00%, and the efficiency ratio was 58.92%, with an operating efficiency ratio of 57.66%.

How strong was NB Bancorp’s (NBBK) asset quality at June 30, 2026?

Non-performing loans were 0.43% of total loans, and total non-performing assets were 0.37% of total assets. The allowance for credit losses was $82,088 thousand, covering 296.8% of non-performing loans, with annualized net charge-offs of (0.07)%.

What were NB Bancorp’s (NBBK) capital and book value metrics in Q2 2026?

Total shareholders’ equity was $842,002 thousand, with shareholders’ equity equal to 11.31% of total assets. Book value per share was $19.22, and tangible book value per share was $18.51, based on 43,818,490 common shares outstanding.

How large is NB Bancorp’s (NBBK) commercial real estate portfolio?

Commercial real estate loans totaled $2,689,249 thousand at June 30, 2026, up 9% from March 31, 2026. The portfolio includes segments such as multi-family, industrial, office, hospitality, retail, cannabis facilities, and other property types.

0001979330false00019793302026-07-222026-07-22

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 8-K
CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(D) OF
THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): July 22, 2026

NB BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

​	​	​	​	​
Maryland	​	001-41899	​ ​ ​	93-2560883
(State or Other Jurisdiction)	​	(Commission File No.)	​	(I.R.S. Employer
of Incorporation)	​	​	​	Identification No.)

​

​	​	​
​	1063 Great Plain Avenue, Needham, Massachusetts	02492
​	(Address of Principal Executive Offices)	(Zip Code)

​

Registrant’s telephone number, including area code: (781) 444-2100

Not Applicable
(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

	​		​
Title of each class	​ ​ ​	Trading Symbol(s)	​ ​ ​	Name of each exchange on which registered
Common Stock, Par Value $0.01 Per Share	​	NBBK	​	The Nasdaq Stock Market, LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

​

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Item 2.02 Results of Operation and Financial Condition.

On July 22, 2026, NB Bancorp, Inc. (the “Company”), the holding company for Needham Bank, issued a press release in which it announced its earnings for the quarter ended June 30, 2026.

A copy of the press release announcing the results is included as Exhibit 99.1 to this Current Report on Form 8-K and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933.

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Item 7.01 Regulation FD Disclosure.

On July 22, 2026, the Company made available investor presentation materials which are intended to be used at an in-person investors bank meeting on July 28, 2026. The investor presentation materials are included in the Current Report on Form 8-K as Exhibit 99.2 and are incorporated herein by reference.

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The information in this Item 7.01 of this Current Report on Form 8-K, including Exhibit 99.2, is being furnished and shall not be deemed to be “filed” for the purposes of Section 18 of the Exchange Act or otherwise subject to the liabilities of that section.

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Item 8.01 Other Events.

On July 22, 2026, the Board of Directors of the Company (the “Board”) declared a dividend of $0.07 per share. The dividend will be paid August 19, 2026 to shareholders of record as of August 5, 2026.

​

A copy of the press release announcing the declaration of the dividend is attached to this Current Report on Form 8-K as Exhibit 99.1 and is hereby incorporated by reference.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

​	​	​
Exhibit No.	​ ​ ​	Description
99.1	​	Press Release dated July 22, 2026
99.2	​	Q2 2026 Investor Presentation
104.1	​	Cover Page Interactive Data File (Embedded within Inline XBRL document)

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SIGNATURES

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, hereunto duly authorized.

​	​	​
​	​	NB BANCORP, INC.
​	​	​
DATE: July 22, 2026	By:	/s/Jean-Pierre Lapointe
​	​	Senior Executive Vice President and Chief Financial Officer

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Exhibit 99.1

NB Bancorp, Inc. Reports Second Quarter 2026 Financial Results, Declares Quarterly Cash Dividend

Investor Contact

JP Lapointe, SEVP, CFO

IR@NeedhamBank.com

781-474-5408

Needham, MA, July 22, 2026 – NB Bancorp, Inc. (the “Company”) (Nasdaq Capital Market: NBBK), the holding company of Needham Bank (the “Bank”), today announced its second quarter 2026 financial results.

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● Net income for the second quarter of 2026 amounted to $21.1 million, or $0.53 per diluted common share, compared to net income of $15.0 million, or $0.36 per diluted common share, for the prior quarter. Return on average assets and return on average equity for the second quarter of 2026 were 1.17% and 10.03%, respectively, increases from 0.87% and 7.05%, respectively, for the prior quarter.

● Operating net income⁽¹⁾ for the second quarter of 2026 increased 38.5% and amounted to $21.9 million, or $0.55 per diluted common share, compared to operating net income⁽¹⁾ of $15.8 million, or $0.38 per diluted common share, for the prior quarter. Operating return on average assets⁽¹⁾ and operating return on average equity⁽¹⁾ for the second quarter of 2026 were 1.21% and 10.39%, respectively, increases from 0.92% and 7.43%, respectively, for the prior quarter.

● Net interest margin expanded by 7 basis points to 4.00% from 3.93% in the prior quarter as total loans increased 3.4% while total deposits increased 3.7% during the quarter. Net interest margin, excluding purchase accounting adjustments⁽¹⁾, expanded by 5 basis points to 3.87% during the current quarter from 3.82% in the prior quarter.

● Efficiency ratio improved to 58.92% from 61.55% in the prior quarter, while operating efficiency ratio⁽¹⁾ improved to 57.66% from 60.06% in the prior quarter.

● Net charge-offs (annualized) as a percent of average loans declined to 0.07% from 0.91% in the prior quarter. Non-performing loans as a percent of total loans decreased to 0.43% at the end of the second quarter from 0.73% at the end of the prior quarter.

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“The second quarter of 2026 displayed Needham Bank’s continued execution of our strategy for disciplined growth in market share as total loans increased 3.4% during the quarter, while total deposits increased 3.7% over the same period. Through the first half of 2026, total loans and total deposits have increased by 15.0% and 15.9% on an annualized basis, while operating EPS increased 24%, respectively. Our teams remained focused on executing our strategic priorities and investing in the infrastructure, technology, and operating capabilities needed to support continued profitable growth. This included targeted investments in artificial intelligence, improved internal systems and automation tools designed to enhance internal efficiency, scalability, and employee effectiveness. We are well positioned to continue to enhance the customer experience and grow market share, while improving long-term operating leverage. The dedication and collaboration of our employees continue to be defining strengths for Needham Bank. As we invest thoughtfully in technology, artificial intelligence, and operational capabilities, while maintaining strong credit performance and disciplined growth, we are building a more scalable and efficient organization that is well-positioned to deliver long-term value for our customers, communities, and shareholders,” Campanelli concluded.

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1

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Declaration of Dividend

The Board of Directors declared a quarterly cash dividend of $0.07 per share, payable on August 19, 2026, to shareholders of record as of August 5, 2026.

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SELECTED FINANCIAL HIGHLIGHTS FOR THE SECOND QUARTER OF 2026

● Net income of $21.1 million, or $0.53 per diluted common share, compared to net income of $15.0 million, or $0.36 per diluted common share, for the prior quarter. Operating net income⁽¹⁾, excluding one-time charges, amounted to $21.9 million, or $0.55 per diluted common share, compared to operating net income⁽¹⁾ of $15.8 million, or $0.38 per diluted common share, for the prior quarter.

● Operating return on average assets increased to 1.21% from 0.92%, operating return on average equity increased to 10.39% from 7.43% and net interest margin expanded to 4.00% from 3.93%.

● Credit trends from the BankProv acquisition improved during the quarter, where net charge-offs to average loans decreased to 0.07% from 0.91% and non-performing assets to total assets decreased to 0.37% from 0.63%

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One-time pre-tax charges during the current quarter include:

o Non-recurring fees for business line expansion of $649 thousand ($499 thousand net of tax);

o Final merger and acquisition costs of $296 thousand ($227 thousand net of tax) related to the Company’s acquisition of Provident; and

o Tax expense and a modified endowment contract penalty of $27 thousand related to the surrender of Bank-owned life insurance (“BOLI”) policies acquired from BankProv.

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One-time pre-tax charges during the prior quarter include:

o Pre-tax trailing merger and acquisition costs of $534 thousand ($390 thousand net of tax) related to the Company’s completed acquisition of Provident;

o Non-recurring fees for business line expansion of $500 thousand ($366 thousand net of tax); and

o Tax expense and a modified endowment contract penalty of $50 thousand related to the surrender of BOLI policies acquired from BankProv.

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● Net interest margin expanded by 7 basis points to 4.00% during the current quarter from 3.93% in the prior quarter. Net interest margin, excluding purchase accounting adjustments⁽¹⁾, expanded by 5 basis points to 3.87% during the current quarter from 3.82% in the prior quarter.

● Gross loans increased $213.0 million, or 3.4%, to $6.42 billion, from $6.21 billion in the prior quarter.

● Total deposits increased $222.9 million, or 3.7%, to $6.32 billion, from $6.10 billion in the prior quarter.

o Core deposits, which the Company considers to be all non-brokered deposits, increased $73.1 million, or 1.3%, to $5.60 billion, from $5.53 billion in the prior quarter.

o Brokered deposits increased $149.8 million, or 26.3%, to $719.9 million, from $570.1 million in the prior quarter.

● Book value per share and tangible book value per share⁽¹⁾ were $19.22 and $18.51, respectively, in the current quarter, compared to $18.83 and $18.11, respectively, in the prior quarter. The increase in tangible book value per share⁽¹⁾ was a result of $21.1 million in net income for the quarter, partially offset by the repurchase of 918,727 shares during the current quarter at an all-in weighted average cost of $20.13 per share and $3.1 million in dividends paid during the quarter.

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BALANCE SHEET

Total assets amounted to $7.45 billion as of June 30, 2026, representing an increase of $220.2 million, or 3.0%, from $7.23 billion as of March 31, 2026.

● Cash and cash equivalents increased $24.6 million, or 6.5%, to $400.2 million from $375.6 million in the prior quarter, as a result of net income earned during the quarter of $21.1 million, along with deposit growth of $222.9 million, partially offset by loan growth of $211.1 million and the repurchase of 918,727 shares during the current quarter at an all-in weighted average cost of $20.13 per share.

2

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● Net loans increased $211.1 million, or 3.4%, to $6.34 billion, from $6.13 billion in the prior quarter as demand for new loan originations and advances continued. The current quarter change was primarily seen in commercial real estate loans, which increased $196.7 million, or 10.2%, residential real estate loans, which increased $45.0 million, or 3.4%, and multi-family residential loans, which increased $29.6 million, or 5.5%, partially offset by mortgage warehouse loans, which decreased $59.5 million, or 21.5% along with continued run-off of the acquired Enterprise Value portfolio, which decreased $29.5 million, or 18.5%, from the prior quarter.

● Deposits increased $222.9 million, or 3.7%, to $6.32 billion from $6.10 billion in the prior quarter. The change in deposits was the result of noninterest bearing demand deposits, which increased $80.8 million, or 9.3%, NOW accounts, which increased $61.8 million, or 8.9% and brokered deposits, which increased $149.8 million, or 26.3%, partially offset by money market accounts, which decreased $77.4 million, or 4.4%.

● Shareholders’ equity decreased $776 thousand, or 0.1%, to $842.0 million, from $842.8 million in the prior quarter, primarily as a result of the repurchase of 918,727 shares of common stock at an all-in weighted average cost of $20.13 per share totaling $18.5 million and $3.1 million in dividends paid during the current quarter, partially offset by net income of $21.1 million. Shareholders’ equity to total assets and tangible shareholders’ equity⁽¹⁾ to tangible assets were 11.3% and 10.9%, respectively, at the end of the current quarter, compared to 11.7% and 11.3%, respectively, at the end of the prior quarter.

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NET INTEREST INCOME

Net interest income increased $4.3 million, or 6.6%, to $69.1 million for the current quarter, compared to $64.9 million for the prior quarter. Net interest margin expanded 7 basis points to 4.00% for the current quarter, from 3.93% in the prior quarter.

● Interest income increased during the current quarter, primarily attributable to an increase in the average balance of and weighted average rate on loans as a result of the continued execution of our growth strategy, partially offset by a reduction in the average balance of and weighted average rate on short-term investments.

● Interest expense increased for the current quarter, primarily driven by increases in the average balances of certificates of deposit and individual retirement accounts and FHLB borrowings, partially offset by a decrease in the weighted average rate on certificates of deposit and individual retirement accounts.

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PROVISION FOR CREDIT LOSSES

Provision for credit losses decreased $3.1 million, or 49.5%, to a provision for credit losses of $3.2 million for the current quarter, compared to a provision for credit losses of $6.3 million for the prior quarter.

● The provision for credit losses on loans decreased $3.4 million, or 53.1%, to $3.0 million for the current quarter, compared to $6.4 million for the prior quarter, primarily driven by an $822 thousand recovery from a commercial and industrial loan, improved qualitative factors on commercial real estate and multi-family loans and no downgrades in qualitative factors, which existed in the prior quarter.

● The provision for credit losses on unfunded commitments increased $253 thousand, or 468.5%, to $199 thousand for the current quarter, compared to a release of $54 thousand for the prior quarter, primarily driven by an increase in net unfunded commitments in the current quarter.

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NONINTEREST INCOME

Noninterest income increased $1.0 million, or 23.2%, to $5.6 million for the current quarter, compared to $4.5 million for the prior quarter.

● Customer service fees increased $550 thousand, or 17.6%, to $3.7 million for the current quarter, compared to $3.1 million in the prior quarter due to increased loan fee income, cash management fees and customer transactional volume.

● Other income increased $315 thousand, or 150.0%, to $525 thousand for the current quarter, compared to $210 thousand in the prior quarter, primarily driven by $229 thousand of credit card branding and marketing income recognized during the quarter, along with higher preferred dividends from solar tax credit investments.

● Gain (loss) on sale of loans, net, increased $228 thousand to a $227 thousand gain in the current quarter, compared to a $1 thousand loss in the prior quarter, resulting from the improvement in the fair market value of consumer loans held for sale during the current quarter.

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NONINTEREST EXPENSE

Noninterest expense increased $1.3 million, or 3.1%, to $44.0 million for the current quarter, compared to $42.7 million for the prior quarter.

● Marketing and charitable contribution expenses increased $497 thousand, or 48.1%, to $1.5 million for the current quarter, compared to $1.0 million for the prior quarter, primarily resulting from advertising expenses related to customer events and branch openings, as well as a higher volume of Bank contributions to charities during the current quarter.

● Data processing expenses increased $460 thousand, or 10.4%, to $4.9 million for the current quarter, compared to $4.4 million for the prior quarter, primarily driven by our continued investment in technology and systems in support of upcoming revenue initiatives, requiring the operation of systems in parallel for a period of time while new systems are implemented.

● FDIC and state insurance assessment expenses increased $432 thousand, or 37.5%, to $1.6 million for the current quarter, compared to $1.2 million for the prior quarter, primarily driven by increased insurance assessments related to the BankProv acquisition.

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INCOME TAXES

Income tax expense increased $1.0 million, or 18.7%, to $6.4 million for the current quarter, compared to $5.4 million for the prior quarter. The increase was primarily driven by the increase in net income during the current quarter. The effective tax rate and the operating effective tax rate⁽¹⁾ were 23.2% and 23.1%, respectively, for the current quarter, compared to 26.4% and 26.2%, respectively, for the prior quarter. The primary drivers of the decrease in the effective tax rate were a higher volume of earned income tax credits and tax-exempt interest income on loans due to the origination of a tax-exempt loan at the end of the prior quarter.

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COMMERCIAL REAL ESTATE PORTFOLIO

Commercial real estate loans increased $226.2 million, or 9.2%, to $2.69 billion, during the current quarter.

● Cannabis facility commercial real estate loans decreased $3.7 million, or 1.7%, to $210.1 million during the current quarter. The Company’s cannabis facility commercial real estate portfolio is secured entirely by the underlying commercial real estate of the borrower operation, in addition to, in most cases, a lien on all business assets. The vast majority of the cannabis facility loan portfolio balances have a loan-to-value ratio of 65% or lower, with appraisal reports taking a blended approach (using both cannabis and non-cannabis use comparable real estate sales, which we believe are generally more conservative).

● The cannabis facility portfolio has geographic dispersion, with lower dollar exposure loans remaining local and larger dollar exposure loans generally tied to multi-state operators with a more national footprint. All cannabis facility loan relationships were current at the end of the current quarter.

● The Company’s multi-family real estate loan portfolio increased $29.6 million, or 5.5%, during the current quarter to $567.7 million. The Company’s multi-family real estate loan portfolio consists of properties primarily located in the Greater Boston area, all of which are adjustable-rate loans and performing at the end of the current quarter.

● The Company’s $335.7 million office portfolio consists principally of suburban Class A and B office space used as medical and traditional offices. The portfolio does not consist of high-rise towers located in Boston and are performing at the end of the current quarter.

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ASSET QUALITY

● The allowance for credit losses (“ACL”) amounted to $82.1 million as of June 30, 2026, or 1.28% of total loans, compared to $80.2 million, or 1.29% of total loans as of March 31, 2026.

● The Company recorded a provision for credit losses of $3.2 million during the current quarter, which included a provision for credit losses on loans of $3.0 million and a provision of $199 thousand for unfunded commitments, compared to a provision for credit losses of $6.3 million during the prior quarter, which included a provision for credit losses on loans of $6.4 million and a release of provision of $54 thousand for unfunded commitments.

● The increase in the ACL for the current quarter was primarily driven by loan growth.

4

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● Non-performing loans (“NPLs”) decreased $17.9 million, or 39.3%, to $27.7 million as of June 30, 2026, from $45.6 million at the end of the prior quarter. The decrease was primarily due to the decrease in commercial and industrial loans on non-accrual of $18.4 million, resulting from improved performance or workouts. The ACL as a percent of NPLs is 297% as of June 30, 2026, an increase from 176% at the end of the prior quarter.

● During the current quarter, the Company recorded total net charge-offs of $1.1 million, or 0.07% of average total loans on an annualized basis, which related to non-purchase-credit-deteriorated (“PCD”) loans, compared to net charge-offs of $13.6 million, or 0.91% of average total loans on an annualized basis, in the prior quarter. The $12.4 million decrease in net charge-offs during the current quarter was primarily a result of prior quarter charge-offs on previously fully reserved for PCD commercial and industrial loans.

● As part of its ongoing credit risk management framework and prudent oversight, the Company periodically reviews lending relationships across all portfolios to ensure alignment with its risk appetite, regulatory expectations, and evolving market conditions.

● The Company’s loan portfolio consists primarily of commercial real estate and multi-family loans, one-to-four-family residential real estate loans, construction and land development loans, commercial and industrial loans, mortgage warehouse loans and consumer loans. These loans are primarily made to individuals and businesses located in our primary lending market area, which is the Greater Boston metropolitan area and surrounding communities in greater New England.

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(1) ^{Represents a non-GAAP measure. See Non-GAAP reconciliation of the corresponding GAAP measures on pages 13 and 14.}​

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ABOUT NB BANCORP, INC.

NB Bancorp, Inc. (Nasdaq Capital Market: NBBK) is the registered bank holding company of Needham Bank. Needham Bank is headquartered in Needham, Massachusetts, which is approximately 17 miles southwest of Boston’s financial district. Known as the “Builder’s Bank,” Needham Bank has been helping individuals, businesses and non-profits build for their futures since 1892. Needham Bank offers an array of tech-forward products and services that businesses and consumers use to manage their financial needs. Needham Bank also provides services to companies in the cannabis industry by providing loans and deposits, along with supporting payment platforms in this industry, such as Mosaic.

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We have the financial expertise typically found at much larger institutions and the local knowledge and commitment you can only find at a community bank. For more information, please visit https://NeedhamBank.com. Needham Bank is a member of FDIC.

​

Non-GAAP Financial Measures

In addition to results presented in accordance with accounting principles generally accepted in the United States of America (“GAAP”), this press release contains certain non-GAAP financial measures, including pre-provision net revenue, operating net income, operating pre-tax income, net interest margin, excluding purchase accounting adjustments, operating noninterest expense, operating noninterest income, operating effective tax rate, operating earnings per share, basic, operating earnings per share, diluted, operating return on average assets, operating return on average shareholders’ equity, operating efficiency ratio, tangible shareholders’ equity, tangible assets and tangible book value per share. The Company’s management believes that the supplemental non-GAAP information is utilized by regulators and market analysts to evaluate a Company’s financial condition and therefore, such information is useful to investors. These disclosures should not be viewed as a substitute for financial results determined in accordance with GAAP, nor are they necessarily comparable to non-GAAP performance measures that may be presented by other companies. Because non-GAAP financial measures are not standardized, it may not be possible to compare these financial measures with other companies’ non-GAAP financial measures having the same or similar names.

Forward-Looking Statements

Statements in this press release that are not historical facts are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, and are intended to be covered by the safe harbor provisions of the Private Securities Litigation Reform Act of 1995.

​

We may also make forward-looking statements in other documents we file with the Securities and Exchange Commission (the “SEC”), in our annual reports to our stockholders, in press releases and other written materials, and in oral statements made by our officers, directors or employees. You can identify forward-looking statements by the use of the words “believe,” “expect,” “anticipate,” “intend,” “estimate,” “assume,” “outlook,” “will,” “should,” and other expressions that predict or indicate future events and trends and which do not relate to historical matters. Although the Company believes that these forward-looking statements are based on reasonable estimates and assumptions, they are not guarantees of future performance and are subject to known and unknown risks, uncertainties, and other factors. You should not place undue reliance on our forward-looking statements. You should exercise caution in interpreting and relying on forward-looking statements because they are subject to significant risks, uncertainties and other factors which are, in some cases, beyond the Company’s control. The Company’s actual results could differ materially from those projected in the forward-looking statements as a result of, among other factors, changes in general business and economic conditions on a national basis and in the local markets in which the Company operates, including changes which adversely affect borrowers’ ability to service and repay loans; changes in customer behavior due to political, business and economic conditions, including inflation and concerns about liquidity; turbulence in the capital and debt markets; reductions in net interest income resulting from interest rate volatility as well as changes in the balances and mix of loans and deposits; changes in interest rates and real estate values; changes in loan collectability and increases in defaults and charge-off rates; decreases in the value of securities and other assets, adequacy of credit loss reserves, or deposit levels necessitating

6

​

increased borrowing to fund loans and investments; risks related to the Company’s acquisitions generally, including disruption to current plans and operations; difficulties in customer and employee retention; fees, expenses and charges related to these transactions being significantly higher than anticipated; unforeseen integration issues or impairment of other intangibles; and the Company’s inability to achieve expected revenues, cost savings, synergies, and other benefits at levels or within the timeframes originally anticipated; changing government regulation; competitive pressures from other financial institutions; changes in legislation or regulation and accounting principles, policies and guidelines; cybersecurity incidents, fraud, natural disasters, and future pandemics; the risk that the Company may not be successful in the implementation of its business strategy; the risk that intangibles recorded in the Company’s financial statements will become impaired; changes in assumptions used in making such forward-looking statements; and the other risks and uncertainties detailed in the Company’s Form 10-K and updated by our Quarterly Report on Form 10-Q and other filings submitted to the SEC. These statements speak only as of the date of this release and the Company does not undertake any obligation to update or revise any of these forward-looking statements to reflect events or circumstances occurring after the date of this communication or to reflect the occurrence of unanticipated events.

​

7

​

​

​	​	​	​	​	​	​	​	​
NB BANCORP, INC.	​	​	​	​	​	​	​	​
SELECTED FINANCIAL HIGHLIGHTS	​	​	​	​	​	​	​	​
(Unaudited)	​	​	​	​	​	​	​	​
(Dollars in thousands, except per share data)	​	​	​	​	​	​	​	​
​	As of and for the three months ended
​	June 30, 2026		​	March 31, 2026		​	June 30, 2025
​	​	​	​	​	​	​	​	​
Earnings data	​	​	​	​	​	​	​	​
Net interest income	$	69,145	​	$	64,868	​	$	47,007
Noninterest income	​	5,559	​	​	4,513	​	​	4,278
Total revenue	​	74,704	​	​	69,381	​	​	51,285
Provision for credit losses	​	3,193	​	​	6,328	​	​	3,161
Noninterest expense	​	44,017	​	​	42,701	​	​	29,405
Pre-tax income	​	27,494	​	​	20,352	​	​	18,719
Net income	​	21,123	​	​	14,984	​	​	14,579
Operating net income (non-GAAP)	​	21,877	​	​	15,791	​	​	15,043
Operating noninterest expense (non-GAAP)	​	43,072	​	​	41,667	​	​	28,875
​	​	​	​	​	​	​	​	​
Per share data	​	​	​	​	​	​	​	​
Earnings per share, basic	$	0.53	​	$	0.37	​	$	0.39
Earnings per share, diluted	​	0.53	​	​	0.36	​	​	0.39
Operating earnings per share, basic (non-GAAP)	​	0.55	​	​	0.39	​	​	0.40
Operating earnings per share, diluted (non-GAAP)	​	0.55	​	​	0.38	​	​	0.40
Book value per share	​	19.22	​	​	18.83	​	​	18.09
Tangible book value per share (non-GAAP)	​	18.51	​	​	18.11	​	​	18.07
​	​	​	​	​	​	​	​	​
Profitability	​	​	​	​	​	​	​	​
Return on average assets	​	1.17%	​	​	0.87%	​	​	1.13%
Operating return on average assets (non-GAAP)	​	1.21%	​	​	0.92%	​	​	1.16%
Return on average shareholders' equity	​	10.03%	​	​	7.05%	​	​	7.84%
Operating return on average shareholders' equity (non-GAAP)	​	10.39%	​	​	7.43%	​	​	8.09%
Net interest margin	​	4.00%	​	​	3.93%	​	​	3.82%
Net interest margin, excluding purchase accounting adjustments	​	3.87%	​	​	3.82%	​	​	3.82%
Cost of deposits	​	2.68%	​	​	2.73%	​	​	3.00%
Efficiency ratio	​	58.92%	​	​	61.55%	​	​	57.34%
Operating efficiency ratio (non-GAAP)	​	57.66%	​	​	60.06%	​	​	56.30%
​	​	​	​	​	​	​	​	​
Balance sheet, end of period	​	​	​	​	​	​	​	​
Total assets	$	7,446,880	​	$	7,226,649	​	$	5,226,618
Total loans	​	6,482,821	​	​	6,273,881	​	​	4,540,969
Total deposits	​	6,320,090	​	​	6,097,200	​	​	4,268,115
Total shareholders' equity	​	842,002	​	​	842,778	​	​	737,122
​	​	​	​	​	​	​	​	​
Asset quality	​	​	​	​	​	​	​	​
ACL	$	82,088	​	$	80,195	​	$	42,601
ACL / Total NPLs	​	296.8%	​	​	176.0%	​	​	341.4%
Total NPLs / Total loans	​	0.43%	​	​	0.73%	​	​	0.27%
Annualized net charge-offs / Average total loans	​	(0.07)%	​	​	(0.91)%	​	​	0.00%
​	​	​	​	​	​	​	​	​
Capital ratios	​	​	​	​	​	​	​	​
Shareholders' equity / Total assets	​	11.31%	​	​	11.66%	​	​	14.10%
Tangible shareholders' equity / tangible assets (non-GAAP)	​	10.94%	​	​	11.27%	​	​	14.09%

​

​

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8

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​

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​

​

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​

​

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​

​

​

​

​

​

​

NB BANCORP, INC.

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

CONSOLIDATED BALANCE SHEETS

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

(Unaudited)

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

(Dollars in thousands, except share and per share data)

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

As of

​

June 30, 2026 change from

​

June 30, 2026

​

March 31, 2026

​

June 30, 2025

​

March 31, 2026

​

June 30, 2025

Assets

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Cash and due from banks

$

372,522

​

$

327,951

​

$

157,175

​

$

44,571

13.6%

​

$

215,347

137.0%

Federal funds sold

​

27,632

​

​

47,618

​

​

101,587

​

​

(19,986)

(42.0)%

​

​

(73,955)

(72.8)%

Total cash and cash equivalents

​

400,154

​

​

375,569

​

​

258,762

​

​

24,585

6.5%

​

​

141,392

54.6%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Available-for-sale securities, at fair value

​

272,640

​

​

277,241

​

​

235,408

​

​

(4,601)

(1.7)%

​

​

37,232

15.8%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Loans held for sale, at fair value

​

59,927

​

​

63,971

​

​

-

​

​

(4,044)

(6.3)%

​

​

59,927

0.0%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Loans receivable, net of deferred fees

​

6,422,894

​

​

6,209,910

​

​

4,540,969

​

​

212,984

3.4%

​

​

1,881,925

41.4%

Allowance for credit losses

​

(82,088)

​

​

(80,195)

​

​

(42,601)

​

​

(1,893)

2.4%

​

​

(39,487)

92.7%

Net loans

​

6,340,806

​

​

6,129,715

​

​

4,498,368

​

​

211,091

3.4%

​

​

1,842,438

41.0%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Accrued interest receivable

​

28,898

​

​

27,150

​

​

20,386

​

​

1,748

6.4%

​

​

8,512

41.8%

Banking premises and equipment, net

​

49,298

​

​

47,335

​

​

34,289

​

​

1,963

4.1%

​

​

15,009

43.8%

Non-public investments

​

42,029

​

​

40,738

​

​

35,767

​

​

1,291

3.2%

​

​

6,262

17.5%

Bank-owned life insurance ("BOLI")

​

97,370

​

​

110,586

​

​

55,711

​

​

(13,216)

(12.0)%

​

​

41,659

74.8%

Prepaid expenses and other assets

​

69,228

​

​

67,749

​

​

57,277

​

​

1,479

2.2%

​

​

11,951

20.9%

Goodwill

​

18,512

​

​

18,512

​

​

-

​

​

-

0.0%

​

​

18,512

0.0%

Core deposit intangible, net

​

17,519

​

​

18,411

​

​

1,005

​

​

(892)

(4.8)%

​

​

16,514

1643.2%

Deferred income tax asset, net

​

50,499

​

​

49,672

​

​

29,645

​

​

827

1.7%

​

​

20,854

70.3%

Total assets

$

7,446,880

​

$

7,226,649

​

$

5,226,618

​

$

220,231

3.0%

​

$

2,220,262

42.5%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Liabilities and shareholders' equity

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Deposits

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Core deposits

$

5,600,238

​

$

5,527,148

​

$

4,013,955

​

$

73,090

1.3%

​

$

1,586,283

39.5%

Brokered deposits

​

719,852

​

​

570,052

​

​

254,160

​

​

149,800

26.3%

​

​

465,692

183.2%

Total deposits

​

6,320,090

​

​

6,097,200

​

​

4,268,115

​

​

222,890

3.7%

​

​

2,051,975

48.1%

Mortgagors' escrow accounts

​

4,420

​

​

4,858

​

​

4,117

​

​

(438)

(9.0)%

​

​

303

7.4%

Federal Home Loan Bank ("FHLB") borrowings

​

181,247

​

​

189,701

​

​

127,600

​

​

(8,454)

(4.5)%

​

​

53,647

42.0%

Accrued expenses and other liabilities

​

77,549

​

​

70,983

​

​

68,235

​

​

6,566

9.3%

​

​

9,314

13.6%

Accrued retirement liabilities

​

21,572

​

​

21,129

​

​

21,429

​

​

443

2.1%

​

​

143

0.7%

Total liabilities

​

6,604,878

​

​

6,383,871

​

​

4,489,496

​

​

221,007

3.5%

​

​

2,115,382

47.1%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Shareholders' equity:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Preferred stock, $0.01 par value, 5,000,000 shares authorized; no shares

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

issued and outstanding

​

-

​

​

-

​

​

-

​

​

-

0.0%

​

​

-

0.0%

Common stock, $0.01 par value, 120,000,000 shares authorized; 43,818,490 issued and

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

outstanding at June 30, 2026, 44,765,178 issued and outstanding at March 31, 2026

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

and 40,748,380 issued and outstanding at June 30, 2025

​

438

​

​

448

​

​

407

​

​

(10)

(2.2)%

​

​

31

7.6%

Additional paid-in capital

​

415,841

​

​

432,858

​

​

358,793

​

​

(17,017)

(3.9)%

​

​

57,048

15.9%

Unallocated common shares held by the Employee Stock Ownership Plan ("ESOP")

​

(41,285)

​

​

(41,873)

​

​

(43,643)

​

​

588

(1.4)%

​

​

2,358

(5.4)%

Retained earnings

​

474,970

​

​

456,978

​

​

427,707

​

​

17,992

3.9%

​

​

47,263

11.1%

Accumulated other comprehensive loss

​

(7,962)

​

​

(5,633)

​

​

(6,142)

​

​

(2,329)

41.3%

​

​

(1,820)

29.6%

Total shareholders' equity

​

842,002

​

​

842,778

​

​

737,122

​

​

(776)

(0.1)%

​

​

104,880

14.2%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Total liabilities and shareholders' equity

$

7,446,880

​

$

7,226,649

​

$

5,226,618

​

$

220,231

3.0%

​

$

2,220,262

42.5%

​

​

​

​

​

9

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

NB BANCORP, INC.

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

CONSOLIDATED STATEMENTS OF INCOME

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

(Unaudited)

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

(Dollars in thousands, except share and per share data)

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended June 30, 2026

​

For the Three Months Ended

​

Change From Three Months Ended

​

June 30, 2026

​

March 31, 2026

​

June 30, 2025

​

March 31, 2026

​

June 30, 2025

INTEREST AND DIVIDEND INCOME

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Interest and fees on loans

$

106,574

​

$

100,042

​

$

74,719

​

$

6,532

6.5%

​

$

31,855

42.6%

Interest on securities

​

2,758

​

​

2,708

​

​

2,307

​

​

50

1.8%

​

​

451

19.5%

Interest and dividends on cash equivalents and other

​

2,460

​

​

2,936

​

​

2,822

​

​

(476)

(16.2)%

​

​

(362)

(12.8)%

Total interest and dividend income

​

111,792

​

​

105,686

​

​

79,848

​

​

6,106

5.8%

​

​

31,944

40.0%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

INTEREST EXPENSE

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Interest on deposits

​

40,686

​

​

39,579

​

​

31,690

​

​

1,107

2.8%

​

​

8,996

28.4%

Interest on borrowings

​

1,961

​

​

1,239

​

​

1,151

​

​

722

58.3%

​

​

810

70.4%

Total interest expense

​

42,647

​

​

40,818

​

​

32,841

​

​

1,829

4.5%

​

​

9,806

29.9%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

NET INTEREST INCOME

​

69,145

​

​

64,868

​

​

47,007

​

​

4,277

6.6%

​

​

22,138

47.1%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

PROVISION FOR CREDIT LOSSES

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Provision for credit losses - loans

​

2,994

​

​

6,382

​

​

4,244

​

​

(3,388)

(53.1)%

​

​

(1,250)

(29.5)%

Provision for (release of) credit losses - unfunded commitments

​

199

​

​

(54)

​

​

(1,083)

​

​

253

468.5%

​

​

1,282

(118.4)%

Total provision for credit losses

​

3,193

​

​

6,328

​

​

3,161

​

​

(3,135)

(49.5)%

​

​

32

1.0%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

NET INTEREST INCOME AFTER

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

PROVISION FOR CREDIT LOSSES

​

65,952

​

​

58,540

​

​

43,846

​

​

7,412

12.7%

​

​

22,106

50.4%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

NONINTEREST INCOME

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Customer service fees

​

3,681

​

​

3,131

​

​

2,554

​

​

550

17.6%

​

​

1,127

44.1%

Increase in cash surrender value of BOLI

​

962

​

​

853

​

​

787

​

​

109

12.8%

​

​

175

22.2%

Mortgage banking income

​

92

​

​

119

​

​

120

​

​

(27)

(22.7)%

​

​

(28)

(23.3)%

Swap contract income

​

72

​

​

201

​

​

524

​

​

(129)

(64.2)%

​

​

(452)

(86.3)%

Gain (loss) on sale of loans, net

​

227

​

​

(1)

​

​

21

​

​

228

22800.0%

​

​

206

981.0%

Other income

​

525

​

​

210

​

​

272

​

​

315

150.0%

​

​

253

93.0%

Total noninterest income

​

5,559

​

​

4,513

​

​

4,278

​

​

1,046

23.2%

​

​

1,281

29.9%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

NONINTEREST EXPENSE

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Salaries and employee benefits

​

25,549

​

​

25,468

​

​

18,567

​

​

81

0.3%

​

​

6,982

37.6%

Director and professional service fees

​

3,816

​

​

4,049

​

​

2,943

​

​

(233)

(5.8)%

​

​

873

29.7%

Occupancy and equipment expenses

​

2,468

​

​

2,491

​

​

1,465

​

​

(23)

(0.9)%

​

​

1,003

68.5%

Data processing expenses

​

4,899

​

​

4,439

​

​

2,493

​

​

460

10.4%

​

​

2,406

96.5%

Marketing and charitable contribution expenses

​

1,530

​

​

1,033

​

​

954

​

​

497

48.1%

​

​

576

60.4%

FDIC and state insurance assessments

​

1,584

​

​

1,152

​

​

883

​

​

432

37.5%

​

​

701

79.4%

General and administrative expenses

​

4,171

​

​

4,069

​

​

2,100

​

​

102

2.5%

​

​

2,071

98.6%

Total noninterest expense

​

44,017

​

​

42,701

​

​

29,405

​

​

1,316

3.1%

​

​

14,612

49.7%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

INCOME BEFORE TAXES

​

27,494

​

​

20,352

​

​

18,719

​

​

7,142

35.1%

​

​

8,775

46.9%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

INCOME TAX EXPENSE

​

6,371

​

​

5,368

​

​

4,140

​

​

1,003

18.7%

​

​

2,231

53.9%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

NET INCOME

$

21,123

​

$

14,984

​

$

14,579

​

$

6,139

41.0%

​

$

6,544

44.9%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Weighted average common shares outstanding, basic

​

39,693,140

​

​

40,969,748

​

​

37,191,460

​

​

(1,276,608)

(3.1)%

​

​

2,501,680

6.7%

Weighted average common shares outstanding, diluted

​

40,000,305

​

​

41,421,002

​

​

37,550,409

​

​

(1,420,697)

(3.4)%

​

​

2,449,896

6.5%

Earnings per share, basic

$

0.53

​

$

0.37

​

$

0.39

​

$

0.16

43.2%

​

$

0.14

35.9%

Earnings per share, diluted

$

0.53

​

$

0.36

​

$

0.39

​

$

0.17

47.2%

​

$

0.14

35.9%

​

​

​

​

​

​

​

​

10

​

NB BANCORP, INC.

AVERAGE BALANCES, INTEREST EARNED/PAID & AVERAGE YIELDS

(Unaudited)

(Dollars in thousands)

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​ ​ ​

For the Three Months Ended

​

​

June 30, 2026

​

March 31, 2026

June 30, 2025

​

​ ​ ​

Average

​ ​ ​

​

​

​ ​ ​

​

​ ​ ​

Average

​ ​ ​

​

​

​ ​ ​

​

Average

​ ​ ​

​

​

​ ​ ​

​

​

​

Outstanding

​

​

​

​

Average

​

Outstanding

​

​

​

​

Average

Outstanding

​

​

​

​

Average

​

​

Balance

​

Interest

​

Yield/Rate (4)

​

Balance

​

Interest

​

Yield/Rate (4)

Balance

​

Interest

​

Yield/Rate (4)

Interest-earning assets:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Loans (5)

​

$

6,377,025

​

$

106,574

6.70

%

$

6,090,227

​

$

100,042

6.66

%

$

4,479,479

​

$

74,719

6.69

%

Securities

​

279,196

​

2,758

3.96

%

273,308

​

2,708

4.02

%

232,812

​

2,307

3.97

%

Other investments (5)

​

34,301

​

612

7.16

%

28,275

​

265

3.80

%

28,525

​

605

8.51

%

Short-term investments (5)

​

237,667

​

1,848

3.12

%

295,394

​

2,671

3.67

%

200,524

​

2,217

4.43

%

Total interest-earning assets

​

6,928,189

​

111,792

6.47

%

6,687,204

​

105,686

6.41

%

4,941,340

​

79,848

6.48

%

Non-interest-earning assets

​

394,611

​

​

​

​

​

375,966

​

​

​

​

277,915

​

​

​

​

Allowance for credit losses

​

(81,276)

​

​

​

​

​

(88,102)

​

​

​

​

(39,931)

​

​

​

​

Total assets

​

$

7,241,524

​

​

​

​

​

$

6,975,068

​

​

​

​

$

5,179,324

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Interest-bearing liabilities:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Savings accounts

​

$

210,544

​

324

0.62

%

$

207,681

​

263

0.51

%

$

119,736

​

134

0.45

%

NOW accounts

​

701,167

​

2,265

1.30

%

639,347

​

2,006

1.27

%

469,472

​

1,259

1.08

%

Money market accounts

​

1,699,366

​

12,783

3.02

%

1,711,672

​

12,732

3.02

%

1,090,163

​

9,062

3.33

%

Certificates of deposit and individual retirement accounts

​

2,595,290

​

25,314

3.91

%

2,497,213

​

24,578

3.99

%

1,964,678

​

21,235

4.34

%

Total interest-bearing deposits

​

5,206,367

​

40,686

3.13

%

5,055,913

​

39,579

3.17

%

3,644,049

​

31,690

3.49

%

FHLB borrowings

​

209,002

​

1,961

3.76

%

135,441

​

1,239

3.71

%

103,406

​

1,151

4.46

%

Total interest-bearing liabilities

​

5,415,369

​

42,647

3.16

%

5,191,354

​

40,818

3.19

%

3,747,455

​

32,841

3.52

%

Non-interest-bearing deposits

​

883,487

​

​

​

​

824,839

​

​

​

​

593,136

​

​

​

​

Other non-interest-bearing liabilities

​

98,225

​

​

​

​

​

97,370

​

​

​

​

93,063

​

​

​

​

Total liabilities

​

6,397,081

​

​

​

​

​

6,113,563

​

​

​

​

4,433,654

​

​

​

​

Shareholders' equity

​

844,443

​

​

​

​

​

861,505

​

​

​

​

745,670

​

​

​

​

Total liabilities and shareholders' equity

​

$

7,241,524

​

​

​

​

​

$

6,975,068

​

​

​

​

$

5,179,324

​

​

​

​

Net interest income

​

​

​

​

$

69,145

​

​

​

​

$

64,868

​

​

​

​

$

47,007

​

​

Net interest rate spread (1)

​

​

​

​

​

​

3.31

%

​

​

​

3.22

%

​

​

​

2.96

%

Net interest-earning assets (2)

​

$

1,512,820

​

​

​

​

​

$

1,495,850

​

​

​

​

​

$

1,193,885

​

​

​

​

​

Net interest margin (3)

​

​

​

​

​

​

4.00

%

​

​

​

3.93

%

​

​

​

3.82

%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Average interest-earning assets to interest-bearing liabilities

​

127.94

%

​

​

​

​

128.81

%

​

​

​

131.86

%

​

​

​

​

​

​

​

​

(1) Net interest rate spread represents the difference between the weighted average yield on interest-earning assets and the weighted average rate of interest-bearing liabilities.

(2) Net interest-earning assets represent total interest-earning assets less total interest-bearing liabilities.

(3) Net interest margin represents net interest income divided by average total interest-earning assets.

(4) Annualized.

(5) Loans include loans held for sale, at fair value. Other investments are comprised of Federal Reserve Bank stock, FHLB stock and swap collateral accounts. Short-term investments are comprised of cash and cash equivalents.

​

​

11

​

NB BANCORP, INC.

COMMERCIAL REAL ESTATE BY COLLATERAL TYPE

(Unaudited)

(Dollars in thousands)

​

​	​	​	​	​	​	​	​	​	​	​	​
​	June 30, 2026
​	Owner-Occupied		​ ​ ​	Non-Owner-Occupied		​ ​ ​	Balance		​ ​ ​	Percentage
Multi-Family	$	—	​	$	567,722	​	$	567,722	​	​	20%
Industrial	​	185,270	​	​	163,112	​	​	348,382	​	​	13%
Office	​	44,635	​	​	291,110	​	​	335,745	​	​	12%
Hospitality	​	41,266	​	​	247,242	​	​	288,508	​	​	11%
Mixed-Use	​	22,408	​	​	225,392	​	​	247,800	​	​	9%
Retail	​	126,323	​	​	109,201	​	​	235,524	​	​	9%
Cannabis Facility	​	201,153	​	​	8,913	​	​	210,066	​	​	8%
Special Purpose	​	84,655	​	​	69,837	​	​	154,492	​	​	6%
Recreational Vehicle Parks	​	13,255	​	​	65,162	​	​	78,417	​	​	3%
Self Storage Facilities	​	—	​	​	71,147	​	​	71,147	​	​	3%
Other	​	87,282	​	​	64,164	​	​	151,446	​	​	6%
Total commercial real estate	$	806,247	​	$	1,883,002	​	$	2,689,249	​	​	100%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Change From March 31, 2026

​

Change From June 30, 2025

​

Owner-Occupied

​ ​ ​

Non-Owner-Occupied

​ ​ ​

Balance

​ ​ ​

Percentage

​

Owner-Occupied

​ ​ ​

Non-Owner-Occupied

​ ​ ​

Balance

​ ​ ​

Percentage

Multi-Family

$

—

​

$

29,558

​

$

29,558

​

​

5%

​

$

—

​

$

250,977

​

$

250,977

​

​

79%

Industrial

​

55,111

​

​

6,772

​

​

61,883

​

​

22%

​

​

98,479

​

​

50,105

​

​

148,584

​

​

74%

Office

​

2,706

​

​

(2,552)

​

​

154

​

​

0%

​

​

18,478

​

​

110,801

​

​

129,279

​

​

63%

Hospitality

​

1,996

​

​

(11,711)

​

​

(9,715)

​

​

(3)%

​

​

41,266

​

​

75,083

​

​

116,349

​

​

68%

Mixed-Use

​

(922)

​

​

24,693

​

​

23,771

​

​

11%

​

​

14,765

​

​

65,014

​

​

79,779

​

​

47%

Retail

​

73,112

​

​

(5,164)

​

​

67,948

​

​

41%

​

​

86,769

​

​

22,358

​

​

109,127

​

​

86%

Cannabis Facility

​

(3,613)

​

​

(85)

​

​

(3,698)

​

​

(2)%

​

​

(54,604)

​

​

(6,185)

​

​

(60,789)

​

​

(22)%

Special Purpose

​

(2,298)

​

​

8,159

​

​

5,861

​

​

4%

​

​

6,535

​

​

12,860

​

​

19,395

​

​

14%

Recreational Vehicle Parks

​

(125)

​

​

13,159

​

​

13,034

​

​

20%

​

​

13,255

​

​

65,162

​

​

78,417

​

​

100%

Self Storage Facilities

​

—

​

​

(16,443)

​

​

(16,443)

​

​

(19)%

​

​

—

​

​

71,147

​

​

71,147

​

​

100%

Other

​

38,079

​

​

15,791

​

​

53,870

​

​

55%

​

​

47,462

​

​

9,372

​

​

56,834

​

​

60%

Total commercial real estate

$

164,046

​

$

62,177

​

$

226,223

​

​

9%

​

$

272,405

​

$

726,694

​

$

999,099

​

​

59%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

March 31, 2026

​

June 30, 2025

​

Owner-Occupied

​ ​ ​

Non-Owner-Occupied

​ ​ ​

Balance

​ ​ ​

Percentage

​

Owner-Occupied

​ ​ ​

Non-Owner-Occupied

​ ​ ​

Balance

​ ​ ​

Percentage

Multi-Family

$

—

​

$

538,164

​

$

538,164

​

​

21%

​

$

—

​

$

316,745

​

$

316,745

​

​

19%

Industrial

​

130,159

​

​

156,340

​

​

286,499

​

​

12%

​

​

86,791

​

​

113,007

​

​

199,798

​

​

12%

Office

​

41,929

​

​

293,662

​

​

335,591

​

​

13%

​

​

26,157

​

​

180,309

​

​

206,466

​

​

12%

Hospitality

​

39,270

​

​

258,953

​

​

298,223

​

​

12%

​

​

—

​

​

172,159

​

​

172,159

​

​

10%

Mixed-Use

​

23,330

​

​

200,699

​

​

224,029

​

​

9%

​

​

7,643

​

​

160,378

​

​

168,021

​

​

10%

Retail

​

53,211

​

​

114,365

​

​

167,576

​

​

7%

​

​

39,554

​

​

86,843

​

​

126,397

​

​

7%

Cannabis Facility

​

204,766

​

​

8,998

​

​

213,764

​

​

9%

​

​

255,757

​

​

15,098

​

​

270,855

​

​

16%

Special Purpose

​

86,953

​

​

61,678

​

​

148,631

​

​

6%

​

​

78,120

​

​

56,977

​

​

135,097

​

​

8%

Recreational Vehicle Parks

​

13,380

​

​

52,003

​

​

65,383

​

​

3%

​

​

—

​

​

—

​

​

—

​

​

0%

Self Storage Facilities

​

—

​

​

87,590

​

​

87,590

​

​

4%

​

​

—

​

​

—

​

​

—

​

​

0%

Other

​

49,203

​

​

48,373

​

​

97,576

​

​

4%

​

​

39,820

​

​

54,792

​

​

94,612

​

​

6%

Total commercial real estate

$

642,201

​

$

1,820,825

​

$

2,463,026

​

​

100%

​

$

533,842

​

$

1,156,308

​

$

1,690,150

​

​

100%

​

​

​

​

​

​

12

​

​

​	​	​	​	​	​	​	​	​
NB BANCORP, INC.	​	​	​	​	​	​	​	​
NON-GAAP RECONCILIATION	​	​	​	​	​	​	​	​
(Unaudited)	​	​	​	​	​	​	​	​
(Dollars in thousands)	​	​	​	​	​	​	​	​
​	For the Three Months Ended
​	June 30, 2026		​	March 31, 2026		​	June 30, 2025
​	​	​	​	​	​	​	​	​
Net income (GAAP)	$	21,123	​	$	14,984	​	$	14,579
​	​	​	​	​	​	​	​	​
Add (Subtract):	​	​	​	​	​	​	​	​
Adjustments to net income:	​	​	​	​	​	​	​	​
Non-recurring fees for business line expansion	​	649	​	​	500	​	​	-
BOLI surrender tax and modified endowment contract penalty	​	27	​	​	50	​	​	64
Merger and acquisition expenses	​	296	​	​	534	​	​	530
Total adjustments to net income	$	972	​	$	1,084	​	$	594
Less net tax benefit associated with pre-tax non-GAAP adjustments to net income	​	218	​	​	277	​	​	130
Non-GAAP adjustments, net of tax	​	754	​	​	807	​	​	464
Operating net income (non-GAAP)	$	21,877	​	$	15,791	​	$	15,043
Weighted average common shares outstanding, basic	​	39,693,140	​	​	40,969,748	​	​	37,191,460
Weighted average common shares outstanding, diluted	​	40,000,305	​	​	41,421,002	​	​	37,550,409
Operating earnings per share, basic (non-GAAP)	$	0.55	​	$	0.39	​	$	0.40
Operating earnings per share, diluted (non-GAAP)	$	0.55	​	$	0.38	​	$	0.40
​	​	​	​	​	​	​	​	​
Pre-tax income (GAAP)	$	27,494	​	$	20,352	​	$	18,719
​	​	​	​	​	​	​	​	​
Add (Subtract):	​	​	​	​	​	​	​	​
Adjustments to pre-tax income:	​	​	​	​	​	​	​	​
Non-recurring fees for business line expansion	​	649	​	​	500	​	​	-
Merger and acquisition expenses	​	296	​	​	534	​	​	530
Total adjustments to pre-tax income	​	945	​	​	1,034	​	​	530
Operating pre-tax income (non-GAAP)	$	28,439	​	$	21,386	​	$	19,249
​	​	​	​	​	​	​	​	​
Net interest income (GAAP)	$	69,145	​	$	64,868	​	$	47,007
​	​	​	​	​	​	​	​	​
Subtract (Add):	​	​	​	​	​	​	​	​
Adjustments to net interest income:	​	​	​	​	​	​	​	​
Purchase accounting adjustments	​	1,972	​	​	1,623	​	​	-
Total impact of non-GAAP interest net income adjustments	$	1,972	​	$	1,623	​	$	-
Net interest income, excluding purchase accounting adjustments (non-GAAP)	$	67,173	​	$	63,245	​	$	47,007
​	​	​	​	​	​	​	​	​
Noninterest expense (GAAP)	$	44,017	​	$	42,701	​	$	29,405
​	​	​	​	​	​	​	​	​
Subtract (Add):	​	​	​	​	​	​	​	​
Adjustments to noninterest expense:	​	​	​	​	​	​	​	​
Non-recurring fees for business line expansion	​	649	​	​	500	​	​	-
Merger and acquisition expenses	​	296	​	​	534	​	​	530
Total impact of non-GAAP noninterest expense adjustments	$	945	​	$	1,034	​	$	530
Operating noninterest expense (non-GAAP)	$	43,072	​	$	41,667	​	$	28,875
​	​	​	​	​	​	​	​	​
Operating net income (non-GAAP)	$	21,877	​	$	15,791	​	$	15,043
Average assets	​	7,241,524	​	​	6,975,068	​	​	5,179,324
Operating return on average assets (non-GAAP)	​	1.21%	​	​	0.92%	​	​	1.16%
Average shareholders’ equity	$	844,443	​	$	861,505	​	$	745,670
Operating return on average shareholders' equity (non-GAAP)	​	10.39%	​	​	7.43%	​	​	8.09%
​	​	​	​	​	​	​	​	​
Operating noninterest expense (non-GAAP)	$	43,072	​	$	41,667	​	$	28,875
Total pre-provision net revenue (net interest income plus total noninterest income)	​	74,704	​	​	69,381	​	​	51,285
Operating efficiency ratio (non-GAAP)	​	57.66%	​	​	60.06%	​	​	56.30%
​	​	​	​	​	​	​	​	​
Income tax expense (GAAP)	$	6,371	​	$	5,368	​	$	4,140
​	​	​	​	​	​	​	​	​
Add (Subtract):	​	​	​	​	​	​	​	​
Adjustments to income tax expense:	​	​	​	​	​	​	​	​
Net tax benefit associated with pre-tax non-GAAP adjustments to net income	​	218	​	​	277	​	​	-
BOLI surrender tax and modified endowment contract penalty	​	(27)	​	​	(50)	​	​	(64)
Total impact of non-GAAP income tax expense adjustments	$	191	​	$	227	​	$	(64)
Operating income tax expense (non-GAAP)	$	6,562	​	$	5,595	​	$	4,076
​	​	​	​	​	​	​	​	​
Operating effective tax rate (non-GAAP)	​	23.1%	​	​	26.2%	​	​	21.2%

​

​

13

​

​	​	​	​	​	​	​	​	​
​	As of
​	June 30, 2026		​	March 31, 2026		​	June 30, 2025
​	​	​	​	​	​	​	​	​
Total shareholders’ equity (GAAP)	$	842,002	​	$	842,778	​	$	737,122
Subtract:	​	​	​	​	​	​	​	​
Intangible assets (core deposit intangible, net of tax and goodwill)	​	31,023	​	​	32,067	​	​	782
Total tangible shareholders’ equity (non-GAAP)	​	810,979	​	​	810,711	​	​	736,340
​	​	​	​	​	​	​	​	​
Total assets (GAAP)	​	7,446,880	​	​	7,226,649	​	​	5,226,618
Subtract:	​	​	​	​	​	​	​	​
Intangible assets (core deposit intangible, net of tax and goodwill)	​	31,023	​	​	32,067	​	​	782
Total tangible assets (non-GAAP)	$	7,415,857	​	$	7,194,582	​	$	5,225,836
Tangible shareholders' equity / tangible assets (non-GAAP)	​	10.94%	​	​	11.27%	​	​	14.09%
Total common shares outstanding	​	43,818,490	​	​	44,765,178	​	​	40,748,380
Tangible book value per share (non-GAAP)	$	18.51	​	$	18.11	​	$	18.07

​

​

14

​

​

​

NB BANCORP, INC.

ASSET QUALITY – NON-PERFORMING ASSETS ⁽¹⁾

(Unaudited)

(Dollars in thousands)

​	​	​	​	​	​	​	​	​	​
​	​	June 30, 2026		​	March 31, 2026		​	June 30, 2025
Real estate loans:	​	​	​	​	​	​	​	​	​
One-to-four-family residential	​	$	2,963	​	$	1,763	​	$	3,030
Home equity	​	​	1,547	​	​	1,673	​	​	1,368
Commercial real estate	​	​	957	​	​	394	​	​	1,984
Construction and land development	​	​	-	​	​	10	​	​	10
Commercial and industrial	​	​	20,446	​	​	38,885	​	​	4,558
Consumer	​	​	1,747	​	​	2,838	​	​	1,528
Total	​	$	27,660	​	$	45,563	​	$	12,478
​	​	​	​	​	​	​	​	​	​
Total non-performing loans to total loans	​	​	0.43%	​	​	0.73%	​	​	0.27%
Total non-performing PCD loans to total loans (2)	​	​	0.22%	​	​	0.49%	​	​	0.00%
Total non-performing non-PCD loans to total loans	​	​	0.21%	​	​	0.24%	​	​	0.27%
​	​	​	​	​	​	​	​	​	​
Total non-performing assets to total assets	​	​	0.37%	​	​	0.63%	​	​	0.24%
Total non-performing PCD assets to total assets	​	​	0.19%	​	​	0.42%	​	​	0.00%
Total non-performing non-PCD assets to total assets	​	​	0.18%	​	​	0.21%	​	​	0.24%

​

​

(1) Non-performing loans and assets are comprised of non-accrual loans.

(2) PCD loans were the result of the BankProv acquisition closed on 11/15/25 and did not exist prior to that date.

​

15

​

NB BANCORP, INC.

ASSET QUALITY – PROVISION, ALLOWANCE, AND NET (CHARGE-OFFS) RECOVERIES

(Unaudited)

(Dollars in thousands)

​	​	​	​	​	​	​	​	​
​	For the Three Months Ended
​	June 30, 2026		​ ​ ​	March 31, 2026		​ ​ ​	June 30, 2025
Allowance for credit losses at beginning of the period	$	80,195	​	$	87,411	​	$	38,338
​	​	​	​	​	​	​	​	​
Provision for credit losses		2,994	​	​	6,382	​	​	4,244
​	​	​	​	​	​	​	​	​
Charge-offs:		​	​		​	​		​
One-to-Four-Family Residential	​	—	​	​	(56)	​	​	—
Commercial & Industrial	​	(294)	​	​	(12,370)	​	​	—
Consumer	​	(2,081)	​	​	(1,409)	​	​	(1,190)
Commercial real estate	​	(10)	​	​	—	​	​	—
Total charge-offs	​	(2,385)	​	​	(13,835)	​	​	(1,190)
​	​	​	​	​	​	​	​	​
Recoveries of loans previously charged off:	​	​	​	​	​	​	​	​
Commercial and industrial	​	1,188	​	​	12	​	​	12
Commercial real estate	​	—	​	​	—	​	​	923
Consumer	​	96	​	​	225	​	​	274
Total recoveries	​	1,284	​	​	237	​	​	1,209
​	​	​	​	​	​	​	​	​
Net charge-offs	​	(1,101)	​	​	(13,598)	​	​	19
​	​	​	​	​	​	​	​	​
Allowance for credit losses at end of the period	$	82,088	​	$	80,195	​	$	42,601
​	​	​	​	​	​	​	​	​
Allowance to non-performing loans	​	297%	​	​	176%	​	​	341.4%
Allowance to total loans outstanding at the end of the period	​	1.28%	​	​	1.29%	​	​	0.94%
Annualized net charge-offs to average loans outstanding during the period	​	(0.07)%	​	​	(0.91)%	​	​	0.00%
Annualized net charge-offs to average loans outstanding during the period – PCD loans (1)	​	0.00%	​	​	(0.82)%	​	​	0.00%
Annualized net charge-offs to average loans outstanding during the period – Non-PCD loans	​	(0.07)%	​	​	(0.08)%	​	​	0.00%

​

​

(1) PCD loans were the result of the BankProv acquisition closed on 11/15/25 and did not exist prior to that date.

16

​

Exhibit 99.2

1

2 Statements in this press release that are not historical facts are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, and are intended to be covered by the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. We may also make forward-looking statements in other documents we file with the Securities and Exchange Commission (the “SEC”), in our annual reports to our stockholders, in press releases and other written materials, and in oral statements made by our officers, directors or employees. You can identify forward-looking statements by the use of the words “believe,” “expect,” “anticipate,” “intend,” “estimate,” “assume,” “outlook,” “will,” “should,” and other expressions that predict or indicate future events and trends and which do not relate to historical matters. Although the Company believes that these forward-looking statements are based on reasonable estimates and assumptions, they are not guarantees of future performance and are subject to known and unknown risks, uncertainties, and other factors. You should not place undue reliance on our forward-looking statements. You should exercise caution in interpreting and relying on forward-looking statements because they are subject to significant risks, uncertainties and other factors which are, in some cases, beyond the Company’s control. The Company’s actual results could differ materially from those projected in the forward-looking statements as a result of, among other factors, changes in general business and economic conditions on a national basis and in the local markets in which the Company operates, including changes which adversely affect borrowers’ ability to service and repay loans; changes in customer behavior due to political, business and economic conditions, including inflation and concerns about liquidity; turbulence in the capital and debt markets; reductions in net interest income resulting from interest rate volatility as well as changes in the balances and mix of loans and deposits; changes in interest rates and real estate values; changes in loan collectability and increases in defaults and charge-off rates; decreases in the value of securities and other assets, adequacy of credit loss reserves, or deposit levels necessitating increased borrowing to fund loans and investments; risks related to the Company’s acquisitions generally, including disruption to current plans and operations; difficulties in customer and employee retention; fees, expenses and charges related to these transactions being significantly higher than anticipated; unforeseen integration issues or impairment of other intangibles; and the Company’s inability to achieve expected revenues, cost savings, synergies, and other benefits at levels or within the timeframes originally anticipated; changing government regulation; competitive pressures from other financial institutions; changes in legislation or regulation and accounting principles, policies and guidelines; cybersecurity incidents, fraud, natural disasters, and future pandemics; the risk that the Company may not be successful in the implementation of its business strategy; the risk that intangibles recorded in the Company’s financial statements will become impaired; changes in assumptions used in making such forward-looking statements; and the other risks and uncertainties detailed in the Company’s Form 10-K and updated by our Quarterly Report on Form 10-Q and other filings submitted to the SEC. These statements speak only as of the date of this release and the Company does not undertake any obligation to update or revise any of these forward-looking statements to reflect events or circumstances occurring after the date of this communication or to reflect the occurrence of unanticipated events.

3

4 NASDAQCM: NBBK Headquartered: Needham, MA IPO: December 2023; Raised ~$410M in gross proceeds BankProv: Acquisition Closed November 15, 2025 Fourth largest public community bank headquartered in Massachusetts The “Builder’s Bank” with deep community relationships and extensive expertise Full-service bank with an array of commercial banking products for retail and business customers Founded in 1892 to help businesses and customers build their futures Total Assets $7.5B Total Gross Loans $6.4B Total Deposits $6.3B Total Equity $842M TCE/ TA 10.94%² Tier 1 Leverage Ratio 11.26%¹ Tier 1 Capital Ratio 11.95%¹ Total Capital Ratio 12.76%¹ Q2’26 Operating ROAA 1.21%² Q2’26 Operating ROATCE 10.39%² Q2’26 NIM 4.00% Q2’26 Operating Efficiency Ratio 57.66%² Balance Sheet Profitability Capital 1) Financials reflect regulatory holding company data; estimated prior to filing of call report 2) See Appendix for reconciliation of non-GAAP financial metrics

5 1) See Appendix for reconciliation of non-GAAP financial metrics • Asset Growth in $M +44.4% • Deposits in $M +45.9% • YTD Operating EPS1 +261.5% • Net Interest Margin +14.9% • Operating ROAA1 +40.3% • Share Price +111.3% $4,333 $6,320 IPO Q2'26 $5,158 $7,447 IPO Q2'26 3.48% 4.00% IPO Q2'26 0.86% 1.21% IPO Q2'26 $10.00 $21.13 IPO Q2'26 $0.26 $0.94 IPO Q2'26

6 1) Excludes banks with total assets greater than $10 billion; FDIC deposit data as of June 30, 2025 Source: S&P Capital IQ Pro Our branch network covers the metro-west area of Boston, southern New Hampshire and surrounding communities which are our primary deposit market areas. We consider our primary lending market area to be the Greater Boston metropolitan area and surrounding communities in Massachusetts, eastern Connecticut, southern New Hampshire and Rhode Island. Boston-Cambridge-Newton, MA-NH MSA Total Population: 5,065,382 ‘26-’31 Proj. Pop. Change: 2.14% Median HHI: $121,960 Proj. HHI Change: 12.10% Manchester-Nashua, NH MSA Total Population: 431,907 ‘26-’31 Proj. Pop. Change: 1.40% Median HHI: $113,649 Proj. HHI Change: 10.83% MA NH Springfield Manchester Concord Boston Lowell Plymouth NBBK (18) Keene Gardner Brockton Pittsfield Worcester Gloucester Dover Boston MSA Community Bank Deposit Market Share¹ Total Deps. 2024 2025 in Market Rank Rank Institution ($M) 2 1 Salem Five Bancorp 5,752 1 2 Cambridge Financial Group Inc. 5,410 3 3 NB Bancorp Inc. 5,246 4 4 Middlesex Bancorp MHC 4,755 6 5 Leader Bancorp Inc. 4,146 5 6 Charlesbridge MHC 4,019 7 7 IFS 1820 Bancorp MHC 3,261 9 8 Hometown Financial Group MHC 2,685 8 9 Northern Bancorp Inc. 2,669 11 10 River Run Bancorp MHC 2,294 All Other Market Participants 31,326 Market Total 71,564 Manchester MSA Community Bank Deposit Market Share¹ Total Deps. 2024 2025 in Market Rank Rank Institution ($M) 1 1 Primary Bank 575 2 2 NB Bancorp Inc. 307 3 3 Bar Harbor Bankshares 248 4 4 BNH Financial 248 5 5 Millyard Bank 229 6 6 Bank of New England 111 9 7 Bangor Bancorp MHC 73 7 8 New Hampshire Mutual Bancorp 65 8 9 Lowell Five Bancorp MHC 63 11 10 Camden National Corp. 54 All Other Market Participants 54 Market Total 2,028 1) Excludes banks with total assets greater than $10 billion; FDIC deposit data as of June 30, 2025 Source: S&P Capital IQ Pro

7 Over the two-year period ended June 30, 2025 (latest market data available), each Needham Bank branch experienced growth that matched or exceeded growth in its respective market. In aggregate, Needham Bank achieved growth at over 5 times the overall market growth during this period. Branch June 2023 - June 2025 NB Deposit Growth June 2023 - June 2025 Market Growth* NB Performance Needham Main Office 15% 9% 168% Ashland 47% 13% 373% Dedham 36% 25% 146% Dover 25% 26% 99% Medfield 23% 1% 2106% Medford Retail 140% 39% 361% Millis 51% 27% 187% Mission Hill** 111% 0% N/A Natick 53% 4% 1497% Wellesley** 23% -22% N/A Westwood 33% 23% 144% All NB Branches (Excludes BP) 30% 6% 504% *Market Grow th Source: S&P Capital IQ **Incalculable as market contracted or did not grow

8 Largest Employers Boston MSA 2026-2031 Projected HHI Δ Massachusetts 2025 GDP by Industry Boston MSA Median HHI ($) 1) Other industries include accommodation and food services, waste management and remediation services, educational services, management of companies, transportation and warehousing, utilities, arts and entertainment. Source: S&P Capital IQ Pro; U.S. Bureau of Economic Analysis; Massachusetts Department of Economic Research Real Estate & Finance 22.8% Professional 19.4% Healthcare & Education 12.1% Government 8.5% Retail Trade 4.4% Entertainment 4.2% Construction 3.8% Transportation & Warehousing 2.1% Other 22.7%

9 Joseph Campanelli Chairman, President & CEO William Darcey President & CEO – Provider Insurance Group Paul J. Ayoub Chair – Nutter McClennen & Fish LLP Susan Elliott Retired EVP – Federal Home Loan Bank of Boston Angela Jackson CEO – Future Forward Strategies Christopher Lynch President – Marshall Resources Joseph R. Nolan, Jr. Chairman, President & CEO – Eversource Francis Orfanello Lead Independent Director Operating Partner – One Rock Capital Partners Hope Pascucci President & Principal – Rose Grove Capital Management Raza Shaikh Managing Director – Launchpad Venture Group Mark Whalen Retired CEO – Needham Bank Joseph Campanelli Chairman, President & CEO Christine Roberts SEVP & Chief Operating Officer James White EVP & Chief Administrative Officer Paul Evangelista EVP & Director of Consumer Payments Kevin Henkin EVP & Chief Credit Officer Stephanie Maiona EVP, Director of Commercial Real Estate James Daley EVP, Director Commercial and Industrial Executive Management Board of Directors JP Lapointe SEVP & Chief Financial Officer Kenneth Montgomery Retired FVP, COO – Federal Reserve Bank of Boston Matt Richardson EVP, Treasury & Cash Management Services Joseph Reilly Former President & CEO – Provident Bancorp, Inc. & BankProv

10 Experienced management team and talent base to grow market share, invest for the future and serve the community Focused on driving franchise value via relationship-based banking and active community involvement History of consistent earnings through various market cycles Excellent credit profile reflective of a diligent and conservative risk management culture Prudent stewards of capital – committed to responsible lending, driving organic growth and investing in the future Strong and stable deposit base with 130+ year history of banking in the communities served Attractive markets of operation to continue generating core loans and deposits

11 • GAAP Net income of $21.1 million, or $0.53 per diluted share for the quarter. • Operating Net Income1 (Non-GAAP) of $21.9 million, or $0.55 per diluted share for the quarter. • Gross loans increased $213.0 million, or 3.4%, to $6.42 billion, from $6.21 billion in the prior quarter; driven by growth in commercial real estate loans of $196.7 million, residential real estate loans, which increased $45.2 million, or 3.4%, and multi-family residential loans, which increased $29.6 million, or 5.5%, partially offset by mortgage warehouse loans, which decreased $59.5 million, or 21.5%. • Net interest margin expanded 7 basis points to 4.00%, while net interest income increased 6.60% during the quarter; primarily the result of increased average loan balances and increased weighted average loan rates. Net intertest margin, excluding purchase accounting adjustments, expanded by 5 basis points to 3.87% during the current quarter from 3.82% in the prior quarter. • Asset quality remains strong: • Annualized Q2 2026 net charge-offs of 0.07% of average total loans and non-performing loans of $27.7 million, or 0.43% of total loans. • Significant reduction in net charge-offs and non-performing loans was a result of BankProv acquired loans being charged off in the prior quarter and settling with no additional losses during the current quarter. • Provision for credit losses was $3.2 million, down from a $6.3 million provision for credit losses in the prior quarter, primarily from an $822 thousand recovery on a commercial and industrial loan, improved qualitative factors on commercial real estate and multi-family loans and no downgrades in qualitative factors, which existed in the prior quarter. 1) See Appendix for reconciliation of non-GAAP financial metrics

12 • Allowance for Credit Losses (“ACL”) increased by $1.9 million, or 2.4%, during the quarter, primarily driven by loan growth. • Resulting in a consistent coverage ratio of 1.28% of total loans, compared to 1.29% in the prior quarter. • Total core deposits increased $73.1 million, or 1.3%, from the prior quarter, to $5.60 billion, primarily driven by growth in noninterest-bearing demand deposits of $80.8 million, or 9.3%, NOW accounts of $61.8 million, or 8.9%, partially offset by a decrease in money market accounts of $76.4 million, or 4.4%. • The loans to deposit ratio remained consistent at 102% during the quarter, as loan growth was primarily funded with deposits. • Borrowings and brokered deposits totaled 12.1% of total assets, which is a 1.59% increase from the prior quarter. • Strong capital position with 11.3% shareholders equity to total assets and 10.9% tangible shareholders' equity to tangible assets¹. • Book value and tangible book value per share were $19.22 and $18.51¹, respectively. • One-time transactions recorded during the quarter included: • Non-recurring fees for business line expansion of $649 thousand ($499 thousand net of tax); and • Trailing BankProv acquisition costs of $296 thousand ($227 thousand net of tax) related to the completed BankProv acquisition that closed on November 15, 2025; • Tax expense and modified endowment contract penalty of $27 thousand related to the surrender of bank-owned life insurance policies acquired from BankProv. 1) See Appendix for reconciliation of non-GAAP financial metrics

13

14 Total Deposits ($M) Tangible Common Equity ($M) Total Assets ($M) Total Gross Loans ($M) $2,923 $3,592 $4,533 $5,158 $7,001 $7,226 $7,447 2021 2022 2023 2024 2025 Q1'26 Q2'26 $2,105 $3,015 $3,889 $4,333 $5,986 $6,210 $6,423 2021 2022 2023 2024 2025 Q1'26 Q2'26 $2,565 $2,887 $3,387 $4,178 $5,854 $6,097 $6,320 2021 2022 2023 2024 2025 Q1'26 Q2'26 $326 $343 $757 $765 $826 $811 $811 2021 2022 2023 2024 2025 Q1'26 Q2'26

15 Operating Return on Avg. Tangible Common Equity (%)1, 2 Operating Net Income ($M)1, 2 Operating Return on Average Assets (%)¹ Operating Return on Average Equity (%)¹ 1) See Appendix for reconciliation of non-GAAP financial metrics 2) Q1 and Q2 ’26 operating net income reflects annualized totals 0.77% 0.96% 0.86% 0.95% 1.21% 0.92% 1.21% 2021 2022 2023 2024 2025 Q1'26 Q2'26 6.81% 9.06% 9.40% 6.09% 8.73% 7.43% 10.39% 2021 2022 2023 2024 2025 Q1'26 Q2'26 6.81% 9.08% 9.43% 6.10% 8.93% 7.72% 10.79% 2021 2022 2023 2024 2025 Q1'26 Q2'26 $21.6 $30.1 $34.3 $45.5 $66.2 $64.0 $87.7 2021 2022 2023 2024 2025 Q1'26 Q2'26

16 Operating Noninterest Income / Average Assets (%)¹ Operating Noninterest Expense / Average Assets (%)¹ Net Interest Margin (%) Operating Efficiency Ratio (%)¹ 1) See Appendix for reconciliation of non-GAAP financial metrics 2.81% 3.49% 3.41% 3.53% 3.79% 3.93% 4.00% 2021 2022 2023 2024 2025 Q1'26 Q2'26 65.8% 62.3% 60.0% 58.2% 56.2% 60.1% 57.7% 2021 2022 2023 2024 2025 Q1'26 Q2'26 0.27% 0.26% 0.31% 0.28% 0.30% 0.26% 0.31% 2021 2022 2023 2024 2025 Q1'26 Q2'26 2.00% 2.28% 2.29% 2.12% 2.20% 2.42% 2.39% 2021 2022 2023 2024 2025 Q1'26 Q2'26

17 11.28%¹ 17.41%² 13.59%² 13.00%² 12.76%² 2021 2022 2023 2024 2025 Q1'26 Q2'26 10.54%¹ 16.51%² 12.83%² 12.19%² 11.95%² 2021 2022 2023 2024 2025 Q1'26 Q2'26 Tier 1 Capital Ratio (%) Total Capital Ratio (%) Tangible Common Equity / Tangible Assets (%) Leverage Ratio (%) 1) Financials reflect indicative bank level call report data 2) Financials reflect indicative regulatory holding company data Note: “NR” stands for “Not Reported” denoting the Bank’s election into the Community Bank Leverage Ratio framework; See Appendix for reconciliation of non-GAAP financial metrics NR NR NR NR 11.16%² 9.54%² 16.70%² 14.82%² 11.85%² 11.27%² 10.94%² 2021 2022 2023 2024 2025 Q1'26 Q2'26 11.23%¹ 10.49%¹ 17.71%² 15.29%² 13.28%² 11.68%² 11.26%² 2021 2022 2023 2024 2025 Q1'26 Q2'26

18

19 Note: Loan composition reflects regulatory holding company data Q2’26 Yield on Loans: 6.70% $6.43B Q2’26 Total

20 Loan balances above are not shown net of deferred fees Variable Rate (%) Fixed Rate (%) Wtd. Avg. Maturity (Yrs) Wtd. Avg. Rate Loan Type Balance Commercial $2,121,527 6.22% 9.6 18.7% 81.3% Real Estate 1-4 Family (incl. $1,386,290 5.30% 25.8 42.5% 57.5% HELOCs) C&I $1,147,727 6.87% 7.1 27.1% 72.9% Construction $765,659 7.57% 5.5 20.6% 79.4% Multi-family $567,722 5.83% 14.7 3.4% 96.6% $217,657 6.40% 0.1 0.0% 100.0% Mortgage Warehouse Consumer $226,783 8.76% 10.6 98.8% 1.2% Total Loans $6,433,365 6.27% 12.8 26.9% 73.1%

21 • Our $217.7 million mortgage warehouse lending portfolio, acquired from BankProv, consists of facility lines to non-bank mortgage origination companies (“originators”). o It is a national platform with relationships across the United States that offers Master Repurchase Agreement facilities (“Facilities”) to independent originators, which allow them to fund the closing of residential mortgage loans. o Each Facility advance is fully collateralized, typically by a security interest in one- to four-family residential mortgage loans and is further enhanced by deposit balances. o The primary source of repayment of the facilities is the sale of the underlying mortgage loans to outside investors, which typically occurs within 15 days, except for construction-to-permanent loans, which generally take longer to sell due to the nature of the loan. These investors can include Federal National Mortgage Association/Federal Home Loan Mortgage Corporation and Government National Mortgage Association, as well as other large financial institutions. • The credit risk associated with this type of lending is the risk that the originators are unable to sell the loans, which is very low. The entire portfolio is current as of June 30, 2026. • We approve facilities to originators by conducting a thorough due diligence review of the originator and its ownership to assess their financial liquidity and regulatory risk profiles. We use a proprietary, risk-based scoring model to underwrite the companies, which correlates to our internal loan risk rating system and continually monitor originators’ performance through both internal and external financial management and quality reviews.

22 • Our C&I portfolio as of June 30, 2026, includes a $129.6 million EV portfolio, acquired from BankProv. The EV portfolio consists of loans and lines to entities collateralized by the cash flows and underlying enterprise value of the borrowing entity. • This portfolio has loans across the country and is geographically disperse. • The balance of this portfolio as of the date of the BankProv acquisition was $207.0 million. The portfolio has paid down $77.4 million in the short time since acquisition through June 30, 2026. As of July 20, 2026, this portfolio has paid down further to $107.9 million. • The purchased-credit deteriorated EV loans charged off since acquisition amounted to $12.4 million and the Bank had $13.2 million in specific reserves against the charged-off loans. • The credit risk associated with this type of lending is the risk that the cash flows of the entity significantly decrease and do not provide for the ability to repay the remaining balance of the loan. • Management monitors this portfolio very closely and has been in close contact with predominantly all of the borrowing entities since acquisition. • Of the $42.3 million of purchase-credit deteriorated fair value credit marks recorded at acquisition, $31.2 million related to the EV portfolio with $17.7 million remaining.

23 EV By Type $129.6M Q2’26 Total EV Balance Trend

24 Construction & Development / Total Indicative Risk-Based Capital (%)¹ Commercial Real Estate / Total Indicative Risk-Based Capital (%)¹ 1) Financials reflect regulatory holding company data 280% 277% 342% 187% 202% 305% 322% 327% 2020 2021 2022 2023 2024 2025 Q1'26 Q2'26 125% 129% 144% 79% 72% 89% 97% 94% 2020 2021 2022 2023 2024 2025 Q1'26 Q2'26

25 Owner-Occupied CRE By Collateral Type Non-Owner-Occupied CRE By Collateral Type $806M Q2’26 Total $1.88B Q2’26 Total

26 1) Includes commercial real estate and construction office loans ¹ • Our $373.3 million office portfolio consists principally of suburban Class A and B office space used as medical and traditional offices. The portfolio does not consist of high-rise towers located in Boston. $373M Q2’26 Total Office Portfolio as of 6/30/2026 Weighted Average DSCR Weighted Average LTV Weighted Average Maturity (Yrs) Weighted Average Rate 5.96% 7.81 51.3% 1.75X

27 C&I By Type C&I By Geography $1.15B Q2’26 Total $1.15B Q2’26 Total

28 Construction By Type Construction By Geography $766M Q2’26 Total $766M Q2’26 Total

29 Amounts above exclude purchased premiums or discounts Loan Type Q2 2025 Q3 2025 Q4 2025 Q1 2026 Q2 2026 Purchased: Solar $ 47,006 $ 45,678 $ 44,410 $ 43,080 $ 41,150 Loans Held for Sale - Boat Loans - - 63,447 63,971 59,927 Boat Loans 45,010 42,487 238 - - Home Improvement 40,042 37,753 35,832 34,084 32,426 Student Loans 6,139 5,768 5,455 5,029 4,702 Total Purchased Balance (incl. LHFS) $ 138,197 $ 131,686 $ 149,382 $ 146,164 $ 138,205 Originated: Auto Loans $ 55,589 $ 68,307 $ 75,560 $ 82,167 $ 88,735 Boat Loans 52,535 57,570 35,967 41,228 51,653 Other 7,385 5,696 6,035 5,773 6,537 Total Originated Balance $ 115,509 $ 131,573 $ 117,562 $ 129,168 $ 146,925 Net Charge Offs - Purchased (3ME) $709 $458 $1,130 $385 $1,965 Net Charge Offs - Originated (3ME) $207 $144 $8 $636 $20

30 $0 $500 $1,000 $1,500 $2,000 $2,500 $3,000 $- $20,000 $40,000 $60,000 $80,000 $100,000 $120,000 $140,000 $160,000 Q2 2025 Q3 2025 Q4 2025 Q1 2026 Q2 2026 Balance (thousands) Period Overview of Purchased Consumer Loans Net Charge Offs - Purchased (3ME) Net Charge Offs - Originated (3ME) Total Purchased Balance (incl. LHFS) Total Originated Balance

31 • As of June 30, 2026, we had outstanding loan balances of $542.5 million to cannabis businesses: • $374.2 million was direct to cannabis entities; • $168.2 million was indirect to cannabis entities; • Weighted average LTV and DSCR was 44.0.% and 3.11, respectively; and, • 74.03% of the total outstanding loans were collateralized by real estate, including 100% of the direct cannabis loans • As of June 30, 2026, the Company had $522.1 million in cannabis deposits • $391.8 million in cannabis-direct and $130.3 million in cannabis-indirect Cannabis Business Loans ($M) Cannabis Business Deposits ($M) 60.7% 61.8% 56.5% 68.8% 69.0% 39.3% 38.2% 43.5% 31.2% 31.0% 06/2025 09/2025 12/2025 03/2026 06/2026 Cannabis Direct Cannabis Indirect $413.8M $408.9M $466.8M $455.6M $522.1M 06/2025 09/2025 12/2025 03/2026 06/2026

32 $6.0 $13.0 $10.8 $13.9 $7.5 $15.3 $13.2 $35.9 $30.3 14.5 $4.5 $8.3 2021 2022 2023 2024 2025 Q1'26 Q2'26 NBBK Nonaccruals ($M) BankProv Nonaccruals ($M) TDRs ($M) OREO ($M) Reserves / Loans (%) & Reserves / NPLs (%) NPA Trends 1) Financials reflect bank level call report data 2) Financials reflect regulatory holding company data 0.36%¹ 0.56%¹ 0.24%¹ 0.27%² NPAs / Assets 0.62%² 0.63%² 0.37%² 0.87% 0.83% 0.83% 0.89% 1.46% 1.29% 1.28% 175% 117% 298% 280% 201% 176% 297% 0.0% 100.0% 200.0% 300.0% 400.0% 0.50% 1.00% 1.50% 2.00% 2021 2022 2023 2024 2025 Q1'26 Q2'26 Reserves / Loans Reserves / NPLs

33 1) Reflects annualized metrics Note: Values may not sum due to rounding NCOs / Average Loans (%)¹ • Our loan portfolio consists primarily of commercial real estate and multifamily loans, one-to four-family residential real estate loans, construction and land development loans, commercial and industrial loans, mortgage warehouse loans and consumer loans. These loans are primarily made to individuals and businesses located in our primary lending market area, which is the Greater Boston metropolitan area and surrounding communities in Massachusetts, Eastern Connecticut, Southern New Hampshire and Rhode Island. • For the quarter ended June 30, 2026, the Company’s NCOs / Average Loans were primarily composed of charge offs on purchased consumer loans. 0.16 0.00 0.10 0.22 0.18 0.91 0.07 (0.10%) 0.20% 0.50% 0.80% 2021 2022 2023 2024 2025 Q1'26 Q2'26

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35 Note: Deposit composition reflects regulatory holding company data Q2’26 Cost of Deposits: 2.68% $6.32B Q2’26 Total

36 Note: Deposit composition reflects regulatory holding company data Cost of Deposits 1.03% 0.43% 0.48% 2.34% 3.28% 2.96% 2.73% 2.68% 0.00% 2.00% 4.00% 6.00% 2020 2021 2022 2023 2024 2025 Q1'26 Q2'26 Balance WAR Balance WAR Balance ($) Balance (%) WAR Noninterest-bearing demand deposits $952,306 0.00% $871,343 0.00% $80,963 9.29% 0.00% Savings accounts 212,936 0.65% 211,295 0.56% 1,641 0.78% 0.09% NOW accounts 754,574 0.19% 692,821 0.17% 61,753 8.91% 0.02% Money market accounts 1,666,729 3.04% 1,743,163 2.98% (76,434) -4.38% 0.06% Customer CDs 2,014,693 3.87% 2,008,314 3.97% 6,379 0.32% -0.10% Brokered CDs 718,852 3.97% 570,052 3.85% 148,800 26.10% 0.12% $6,320,090 2.55% $6,096,988 2.53% $223,102 3.66% 0.02% 6/30/2026 3/31/2026 Change ($ in Thousands)

37 Note: Deposit composition reflects regulatory holding company data Time Deposit Maturities ($M) Brokered Deposit Maturities ($M) 3.92% 3.85% 3.88% 3.87% 3.68% $0 $200 $400 $600 $800 09/2026 12/2026 03/2027 06/2027 09/2027 3.98% 0.00% 0.00% 0.00% 0.00% $0 $200 $400 $600 $800 $1,000 09/2026 12/2026 03/2027 06/2027 09/2027

38 $272.6M Q2’ 26 Total Q2’ 26 Yield on Securities: 3.96%

39 At June 30, 2026 Change in Interest Rates Net Interest Income Year 1 Change (bps) Year 1 Forecast ($000) From Level +300 $290,250 5.6% +200 $286,254 4.1% +100 $281,644 2.5% -- $274,904 -- (100) $270,584 (1.6%) (200) $267,636 (2.6%) (300) $266,213 (3.2%)

40 As of June 30, 2026, the Company had: • $181.2 million of outstanding advances from the Federal Home Loan Bank of Boston (“FHLBB”) • $718.9 million of brokered deposits • $762.0 million of unused borrowing capacity with the FHLBB • $1.1 billion available with the Federal Reserve Bank’s Borrower-in-Custody Program. • $1.1 billion of additional capacity for brokered deposits, pursuant to internal liquidity policy stating that brokered deposits can be up to 25.0% of total assets 77.1% unused capacity FHLB Advances 4.6% Brokered Deposits 18.3% FHLB Unused Borrowing Capacity 19.4% FED Available Borrowing Capacity 28.6% Capacity for Additional Brokered Deposits 29.1% % of Total Liquidity

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42 In addition to results presented in accordance with accounting principles generally accepted in the United States of America (“GAAP”), this press release contains certain non-GAAP financial measures, including pre-provision net revenue, operating net income, operating pre-tax income, net interest margin, excluding purchase accounting adjustments, operating noninterest expense, operating noninterest income, operating effective tax rate, operating earnings per share, basic, operating earnings per share, diluted, operating return on average assets, operating return on average shareholders’ equity, operating efficiency ratio, tangible shareholders’ equity, tangible assets and tangible book value per share. The Company’s management believes that the supplemental non-GAAP information is utilized by regulators and market analysts to evaluate a Company’s financial condition and therefore, such information is useful to investors. These disclosures should not be viewed as a substitute for financial results determined in accordance with GAAP, nor are they necessarily comparable to non-GAAP performance measures that may be presented by other companies. Because non-GAAP financial measures are not standardized, it may not be possible to compare these financial measures with other companies’ non-GAAP financial measures having the same or similar names. 1) These amounts are reflected in income tax expense and reflect amounts related to current year compensation and a write-down for future LTIP vesting amounts that are not expected to be tax deductible on a tax return. These amounts are not included in the calculation of the tax benefit associated with non-GAAP adjustments.

43 In addition to results presented in accordance with accounting principles generally accepted in the United States of America (“GAAP”), this press release contains certain non-GAAP financial measures, including pre-provision net revenue, operating net income, operating pre-tax income, net interest margin, excluding purchase accounting adjustments, operating noninterest expense, operating noninterest income, operating effective tax rate, operating earnings per share, basic, operating earnings per share, diluted, operating return on average assets, operating return on average shareholders’ equity, operating efficiency ratio, tangible shareholders’ equity, tangible assets and tangible book value per share. The Company’s management believes that the supplemental non-GAAP information is utilized by regulators and market analysts to evaluate a Company’s financial condition and therefore, such information is useful to investors. These disclosures should not be viewed as a substitute for financial results determined in accordance with GAAP, nor are they necessarily comparable to non-GAAP performance measures that may be presented by other companies. Because non-GAAP financial measures are not standardized, it may not be possible to compare these financial measures with other companies’ non-GAAP financial measures having the same or similar names.

44 In addition to results presented in accordance with accounting principles generally accepted in the United States of America (“GAAP”), this press release contains certain non-GAAP financial measures, including pre-provision net revenue, operating net income, operating pre-tax income, net interest margin, excluding purchase accounting adjustments, operating noninterest expense, operating noninterest income, operating effective tax rate, operating earnings per share, basic, operating earnings per share, diluted, operating return on average assets, operating return on average shareholders’ equity, operating efficiency ratio, tangible shareholders’ equity, tangible assets and tangible book value per share. The Company’s management believes that the supplemental non-GAAP information is utilized by regulators and market analysts to evaluate a Company’s financial condition and therefore, such information is useful to investors. These disclosures should not be viewed as a substitute for financial results determined in accordance with GAAP, nor are they necessarily comparable to non-GAAP performance measures that may be presented by other companies. Because non-GAAP financial measures are not standardized, it may not be possible to compare these financial measures with other companies’ non-GAAP financial measures having the same or similar names.

45 In addition to results presented in accordance with accounting principles generally accepted in the United States of America (“GAAP”), this press release contains certain non-GAAP financial measures, including pre-provision net revenue, operating net income, operating pre-tax income, net interest margin, excluding purchase accounting adjustments, operating noninterest expense, operating noninterest income, operating effective tax rate, operating earnings per share, basic, operating earnings per share, diluted, operating return on average assets, operating return on average shareholders’ equity, operating efficiency ratio, tangible shareholders’ equity, tangible assets and tangible book value per share. The Company’s management believes that the supplemental non-GAAP information is utilized by regulators and market analysts to evaluate a Company’s financial condition and therefore, such information is useful to investors. These disclosures should not be viewed as a substitute for financial results determined in accordance with GAAP, nor are they necessarily comparable to non-GAAP performance measures that may be presented by other companies. Because non-GAAP financial measures are not standardized, it may not be possible to compare these financial measures with other companies’ non-GAAP financial measures having the same or similar names.

46 Joseph Campanelli Chairman, President & CEO Christine Roberts SEVP & Chief Operating Officer JP Lapointe SEVP & Chief Financial Officer Mr. Campanelli has served as President and Chief Executive Officer of Needham Bank since joining the Bank in January 2017 and was elected Chairman in 2022. Mr. Campanelli has over 40 years of banking experience in a variety of senior and executive positions, including having served as the President and Chief Executive Officer of Sovereign Bancorp, Inc. and its subsidiary Sovereign Bank as well as Chairman, President and Chief Executive Officer of Flagstar Bancorp, Inc. and its subsidiary Flagstar Bank. Additionally, Mr. Campanelli has a long history of community involvement, currently serving on the board of the Massachusetts Business Roundtable, Boys and Girls Club of Boston and The One Hundred Club of Boston. Ms. Roberts is Senior Executive Vice President and Chief Operating Officer of Needham Bank, a position she has held since January 2025 when she joined Needham Bank. Prior to this, Ms. Roberts was Executive Vice President of Citizens Pay at Citizens Bank since April 2022. Ms. Roberts had been employed at Citizens Bank since August 2012, where she held positions of increasing responsibility across the institution. Mr. Lapointe is Senior Executive Vice President and Chief Financial Officer, a position he has held since February 2024. Prior to this, Mr. Lapointe was the Chief Financial Officer of Northeast Bank from November 2017 until February 2024. Prior to joining Northeast Bank, Mr. Lapointe served as a Senior Audit Manager at Wolf & Company, P.C. in its external and internal audit practices, with a focus on the financial services sector from 2004 to 2017. Mr. Lapointe is a certified public accountant registered in the Commonwealth of Massachusetts. Kevin Henkin EVP & Chief Credit Officer Mr. Henkin is Executive Vice President and Chief Credit Officer of Needham Bank, a position he has held since April 2018. In this role, Mr. Henkin has primary responsibility for managing all aspects of the credit risk management framework over the Bank’s lending operations. Mr. Henkin has over 30 years of banking experience, having served at other financial institutions as well as running a bank consulting firm for three years at which Mr. Henkin conducted external loan reviews, stress testing and due diligence for financial institutions.

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