[10-Q] Bain Capital GSS Investment Corp. Quarterly Earnings Report

Rhea-AI Filing Summary

Bain Capital GSS Investment Corp. (BCSS) filed its quarterly report detailing SPAC formation activity and the closing of its IPO shortly after quarter‑end. The company reported minimal operating activity through September 30, 2025, as it prepared for its offering. On October 1, 2025, BCSS completed an initial public offering of 46,000,000 units at $10.00 per unit, placing $460,000,000 into a U.S. trust account. A concurrent private placement of 900,000 units raised an additional $9,000,000.

Transaction costs totaled $23,835,700, including a cash underwriting fee and $16,100,000 in deferred underwriting commissions. Each unit includes one Class A ordinary share and one‑fifth of a warrant; each whole warrant is exercisable at $11.50 per share. For the quarter, BCSS recorded a net loss of $20,600 (since inception $71,168) and a working capital deficit of $7,654,068 as of September 30, 2025. As of November 13, 2025, there were 46,900,000 Class A and 11,500,000 Class B shares outstanding. Public shareholders will have the right to redeem their shares in connection with a business combination, which must occur within the stated combination period.

Insights

SPAC structuring analyst

BCSS closed a standard SPAC IPO, funding $460M in trust with typical warrant terms.

BCSS completed a SPAC IPO of 46,000,000 units at $10.00 per unit, with proceeds of $460,000,000 placed in a trust account on Oct 1, 2025. A concurrent private placement added $9,000,000. Each unit carries one Class A share and one‑fifth of a warrant; each whole warrant is exercisable at $11.50.

Costs include $7,000,000 cash underwriting (net of reimbursement), $16,100,000 deferred underwriting, and $735,700 other fees. The deferred amount is payable only upon completing a business combination. Baseline financials show a modest net loss of $20,600 for the quarter and working capital transitioning from a deficit at Sep 30, 2025 to positive levels after the IPO close.

Key dependencies are standard for SPACs: completing a qualifying deal within the combination period and managing redemptions at approximately $10.00 per share plus permitted interest. Subsequent filings may detail target selection and any additional financing structures tied to a definitive agreement.

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(MARK ONE)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarter ended September 30, 2025

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from       to      

Commission file number: 001-42874

Bain Capital GSS Investment Corp.

(Exact Name of Registrant as Specified in Its Charter)

Cayman Islands		98-1853296
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)

200 Clarendon Street

Boston, Massachusetts 02116

(Address of principal executive offices)

+1 (617) 516-2000

(Issuer’s telephone number)

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

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-fifth of one redeemable warrant		BCSS.U		New York Stock Exchange
Class A ordinary shares included as part of the units		BCSS		New York Stock Exchange
Redeemable warrants included as part of the units, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50		BCSS.W		New York Stock Exchange

Check whether the issuer (1) filed all reports required to be filed by Section 13 or 15(d) of the Exchange Act during the past 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See definitions of “large accelerated filer”, “accelerated filer”, “smaller reporting company”, and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer		☐		Accelerated filer		☐
Non-accelerated filer		☒		Smaller reporting company		☒
				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. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☒ No ☐

As of November 13, 2025, there were 46,900,000 Class A ordinary shares, $0.0001 par value, and 11,500,000 Class B ordinary shares, $0.0001 par value, issued and outstanding.

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BAIN CAPITAL GSS INVESTMENT CORP.

FORM 10-Q FOR THE QUARTER ENDED SEPTEMBER 30, 2025

TABLE OF CONTENTS

		Page
Part I. Financial Information			1
Item 1. Interim Financial Statements			1
Condensed Balance Sheet as of September 30, 2025 (Unaudited)			1
Condensed Statements of Operations for the three months ended September 30, 2025 and for the period from March 24, 2025 (Inception) through September 30, 2025 (Unaudited)			2
Condensed Statements of Changes in Shareholders’ Equity (Deficit) for the three months ended September 30, 2025 and for the period from March 24, 2025 (Inception) through September 30, 2025 (Unaudited)			3
Condensed Statement of Cash Flows for the period from March 24, 2025 (Inception) through September 30, 2025 (Unaudited)			4
Notes to Condensed Financial Statements (Unaudited)			5
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations			22
Item 3. Quantitative and Qualitative Disclosures Regarding Market Risk			24
Item 4. Controls and Procedures			25
Part II. Other Information			26
Item 1. Legal Proceedings			26
Item 1A. Risk Factors			26
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds			26
Item 3. Defaults Upon Senior Securities			26
Item 4. Mine Safety Disclosures			26
Item 5. Other Information			26
Item 6. Exhibits			27
Part III. Signatures			28

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PART I - FINANCIAL INFORMATION

Item 1. Interim Financial Statements.

BAIN CAPITAL GSS INVESTMENT CORP.

CONDENSED BALANCE SHEET

SEPTEMBER 30, 2025

(UNAUDITED)

Assets:
Current Assets
Cash		$	2,000,000
Total Current Assets			2,000,000
Deferred offering costs			607,900
Cash held in Trust Account			7,000,000
Total Assets		$	9,607,900
Liabilities and Shareholders’ Deficit:
Current Liabilities
Accrued offering costs		$	421,091
Accrued expenses			20,600
Due to Sponsor			9,000,000
Promissory note – related party			212,377
Total Current Liabilities			9,654,068
Commitments and Contingencies
Shareholders’ Deficit
Preference shares, $0.0001 par value; 1,000,000 shares authorized; none issued or outstanding at September 30, 2025			—
Class A ordinary shares, $0.0001 par value; 200,000,000 shares authorized; none issued or outstanding at September 30, 2025			—
Class B ordinary shares, $0.0001 par value; 20,000,000 shares authorized; 11,500,000 shares issued and outstanding(1) at September 30, 2025			1,150
Additional paid-in capital			23,850
Accumulated deficit			(71,168	)
Total Shareholders’ Deficit			(46,168	)
Total Liabilities and Shareholders’ Deficit		$	9,607,900

(1) Includes up to 1,500,000 Class B ordinary shares subject to forfeiture if the over-allotment option is not exercised in full or in part by the underwriters. Subsequently, on October 1, 2025, the underwriters exercised their over-allotment option in full as part of the closing of the Initial Public Offering. As such, the 1,500,000 Founder Shares are no longer subject to forfeiture (see Note 4).

The accompanying notes are an integral part of the unaudited condensed financial statements.

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BAIN CAPITAL GSS INVESTMENT CORP.

CONDENSED STATEMENTS OF OPERATIONS

(UNAUDITED)

		For the Three Months Ended September 30,				For the Period from March 24, 2025 (Inception) Through September 30,
		2025				2025
General and administrative costs		$	20,600			$	71,168
Loss from operations			(20,600	)			(71,168	)
Net loss		$	(20,600	)		$	(71,168	)
Basic and diluted weighted average Class B ordinary shares outstanding(1)			10,000,000				10,000,000
Basic and diluted net loss per Class B ordinary share		$	(0.00	)		$	(0.01	)

(1) Excludes up to 1,500,000 Class B ordinary shares subject to forfeiture if the over-allotment option is not exercised in full or in part by the underwriters. Subsequently, on October 1, 2025, the underwriters exercised their over-allotment option in full as part of the closing of the Initial Public Offering. As such, the 1,500,000 Founder Shares are no longer subject to forfeiture (see Note 4).

The accompanying notes are an integral part of the unaudited condensed financial statements.

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BAIN CAPITAL GSS INVESTMENT CORP.

CONDENSED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY (DEFICIT)

FOR THE THREE MONTHS ENDED SEPTEMBER 30, 2025 AND

FOR THE PERIOD FROM MARCH 24, 2025 (INCEPTION) THROUGH SEPTEMBER 30, 2025

(UNAUDITED)

		Class A Ordinary Shares								Class B Ordinary Shares(1)								Additional Paid-in Capital				Accumulated Deficit				Total Shareholders’ Equity (Deficit)
		Shares				Amount				Shares				Amount
Balance — March 24, 2025 (Inception)			—			$	—				—			$	—			$	—			$	—			$	—
Issuance of Class B ordinary shares to Sponsor			—				—				11,500,000				1,150				23,850				—				25,000
Net loss			—				—				—				—				—				(20,608	)			(20,608	)
Balance – March 31, 2025			—				—				11,500,000				1,150				23,850				(20,608	)			4,392
Net loss			—				—				—				—				—				(29,960	)			(29,960	)
Balance – June 30, 2025			—				—				11,500,000				1,150				23,850				(50,568	)			(25,568	)
Net loss			—				—				—				—				—				(20,600	)			(20,600	)
Balance – September 30, 2025			—			$	—				11,500,000			$	1,150			$	23,850			$	(71,168	)		$	(46,168	)

(1) Includes up to 1,500,000 Class B ordinary shares subject to forfeiture if the over-allotment option is not exercised in full or in part by the underwriters. Subsequently, on October 1, 2025, the underwriters exercised their over-allotment option in full as part of the closing of the Initial Public Offering. As such, the 1,500,000 Founder Shares are no longer subject to forfeiture (see Note 4).

The accompanying notes are an integral part of the unaudited condensed financial statements.

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BAIN CAPITAL GSS INVESTMENT CORP.

CONDENSED STATEMENT OF CASH FLOWS

FOR THE PERIOD FROM MARCH 24, 2025 (INCEPTION) THROUGH SEPTEMBER 30, 2025

(UNAUDITED)

Cash Flows from Operating Activities:
Net loss		$	(71,168	)
Adjustments to reconcile net loss to net cash used in operating activities:
General and administrative expenses paid through issuance of Class B ordinary shares			10,188
General and administrative expenses paid through promissory note – related party			40,380
Changes in operating assets and liabilities:
Accrued expenses			20,600
Net cash used in operating activities			—
Cash Flows from Investing Activities:
Investment of cash in Trust Account			(7,000,000	)
Net cash used in investing activities			(7,000,000	)
Cash Flows from Financing Activities:
Proceeds due to Sponsor			9,000,000
Net cash provided by financing activities			9,000,000
Net Change in Cash			2,000,000
Cash – Beginning of period			—
Cash – End of period		$	2,000,000
Noncash investing and financing activities:
Deferred offering costs included in accrued offering costs		$	421,091
Deferred offering costs paid through promissory note – related party		$	171,997
Deferred offering costs paid by Sponsor through issuance of Class B ordinary shares		$	14,812

The accompanying notes are an integral part of the unaudited condensed financial statements.

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BAIN CAPITAL GSS INVESTMENT CORP.

NOTES TO CONDENSED FINANCIAL STATEMENTS

SEPTEMBER 30, 2025

(UNAUDITED)

Note 1 — Description of Organization and Business Operations

Bain Capital GSS Investment Corp. (the “Company”) is a newly organized blank check company incorporated as a Cayman Islands exempted company and formed for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses or entities (the “Business Combination”). The Company has not selected any specific Business Combination target and the Company has not, nor has anyone on its behalf, engaged in any substantive discussions, directly or indirectly, with any Business Combination target with respect to an initial Business Combination with the Company. The Company is an emerging growth company and, as such, the Company is subject to all of the risks associated with emerging growth companies.

As of September 30, 2025, the Company had not commenced any operations. All activity for the period from March 24, 2025 (inception) through September 30, 2025 relates to the Company’s formation and the initial public offering (the “Initial Public Offering”), which is described below. The Company will not generate any operating revenues until after the completion of its initial Business Combination, at the earliest. The Company will generate non-operating income in the form of interest income on the proceeds derived from the Initial Public Offering. The Company has selected December 31 as its fiscal year end.

The registration statement for the Company’s Initial Public Offering was declared effective on September 29, 2025. On October 1, 2025, the Company consummated the Initial Public Offering of 46,000,000 units (the “Units” and, with respect to the Class A ordinary shares included in the Units being offered, the “Public Shares”), which includes the full exercise by the underwriters of their over-allotment option in the amount of 6,000,000 Units, at $10.00 per Unit, generating gross proceeds of $460,000,000. Each Unit consists of one Class A ordinary share and one-fifth of one redeemable warrant (each, a “Public Warrant”).

Simultaneously with the closing of the Initial Public Offering, the Company consummated the sale of 900,000 units (the “Private Placement Units”) at a price of $10.00 per Private Placement Unit, in a private placement (the “Private Placement”) to the Company’s sponsor, Bain Capital GSS Investment Sponsor LLC (the “Sponsor”), generating gross proceeds of $9,000,000. Each Private Placement Unit consists of one Class A ordinary share and one-fifth of one redeemable warrant (the “Private Placement Warrants” and together with the Public Warrants, the “Warrants”). Each whole Warrant entitles the holder to purchase one Class A ordinary share at a price of $11.50 per share, subject to adjustment.

Transaction costs amounted to $23,835,700, consisting of $7,000,000 of cash underwriting fee (net of $1,000,000 underwriters’ reimbursement), $16,100,000 of deferred underwriting fee, and $735,700 of other offering costs.

The Company’s management has broad discretion with respect to the specific application of the net proceeds of the Initial Public Offering and the sale of Private Placement Units, although substantially all of the net proceeds are intended to be applied generally toward consummating a Business Combination. There is no assurance that the Company will be able to complete a Business Combination successfully. The Company must complete one or more initial Business Combinations having an aggregate fair market value of at least 80% of the net assets held in the Trust Account (as defined below) (excluding the amount of deferred underwriting commissions and taxes payable on the interest earned on the Trust Account) at the time of the signing of the agreement to enter into the initial Business Combination. However, the Company will only complete a Business Combination if the post-transaction company owns or acquires 50% or more of the outstanding voting securities of the target or otherwise acquires a controlling interest in the target sufficient for it not to be required to register as an investment company under the Investment Company Act of 1940, as amended (the “Investment Company Act”).

Following the closing of the Initial Public Offering, on October 1, 2025, an amount of $460,000,000 ($10.00 per Unit) from the net proceeds of the sale of the Units and the Private Placement Units was placed in the trust account (the “Trust Account”), located in the United States, with Continental Stock Transfer & Trust Company acting as trustee, and may only be held in cash, including in demand Section 2(a)(16) of the Investment Company Act having a maturity of 185 days or less or in money market funds meeting certain conditions under Rule 2a-7 promulgated under the Investment Company Act which invest only in direct U.S. government treasury obligations, until the earlier of: (i) the completion of a Business Combination and (ii) the distribution of the Trust Account as described below.

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The Company will provide the holders (the “Public Shareholders”) of Public Units, with the opportunity to redeem all or a portion of their Public Shares upon the completion of a Business Combination either (i) in connection with a shareholder meeting called to approve the Business Combination or (ii) by means of a tender offer. The decision as to whether the Company will seek shareholder approval of a Business Combination or conduct a tender offer will be made by the Company, solely in its discretion. The Public Shareholders will be entitled to redeem their Public Shares for a pro rata portion of the amount then held in the Trust Account (initially invested at $10.00 per Public Share, plus any pro rata interest earned on the funds held in the Trust Account and not previously released to the Company for Permitted Withdrawals (as defined below)). The per-share amount to be distributed to Public Shareholders who redeem their Public Shares will not be reduced by the deferred underwriting commissions the Company will pay to the underwriters (as discussed in Note 5).

Upon the public announcement of the initial Business Combination, if the Company elects to conduct redemptions pursuant to the tender offer rules, the Company and the Sponsor will terminate any plan established in accordance with Rule 10b5-1 to purchase the Class A ordinary shares in the open market, in order to comply with Rule 14e-5 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). In the event the Company conducts redemptions pursuant to the tender offer rules, the offer to redeem will remain open for at least 20 business days, in accordance with Rule 14e-1(a) under the Exchange Act, and the Company will not be permitted to complete the initial Business Combination until the expiration of the tender offer period. In addition, the tender offer will be conditioned on public shareholders not tendering more than the number of public shares the Company is permitted to redeem. If public shareholders tender more shares than the Company has offered to purchase, the Company will withdraw the tender offer and not complete such initial Business Combination.

Notwithstanding the foregoing, if the Company seeks shareholder approval of its Business Combination and does not conduct redemptions in connection with its Business Combination pursuant to the tender offer rules, the Amended and Restated Memorandum and Articles of Association will provide that a Public Shareholder, together with any affiliate of such shareholder or any other person with whom such shareholder is acting in concert or as a “group” (as defined under Section 13 of the Exchange Act), will be restricted from redeeming its Public Shares with respect to more than an aggregate of 15% of the Public Shares issued in the Initial Public Offering, without the prior consent of the Company.

The Sponsor and the Company’s officers and directors (the “initial shareholders”) have agreed not to propose an amendment to the Amended and Restated Memorandum and Articles of Association (a) that would modify the substance or timing of the Company’s obligation to provide holders of its Public Shares the right to have their shares redeemed or repurchased in connection with a Business Combination or to redeem 100% of the Company’s Public Shares if the Company does not complete its Business Combination within 24 months (or 27 months from the closing of the Initial Public Offering if the Company has executed a letter of intent, agreement in principle or definitive agreement for the initial Business Combination within 24 months from the closing of the Initial Public Offering) from the closing of the Initial Public Offering (the “Combination Period”) or (b) with respect to any other provision relating to the rights of Public Shareholders, unless the Company provides the Public Shareholders with the opportunity to redeem their Class A ordinary shares in conjunction with any such amendment at a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account, including interest earned on the funds held in the Trust Account and not previously withdrawn or eligible to be withdrawn by the Company to pay the Company’s taxes, excluding the 1% U.S. federal excise tax that was implemented by the Inflation Reduction Act of 2022 (“Permitted Withdrawals”), divided by the number of the then-outstanding Public Shares.

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If the Company has not completed a Business Combination within the Combination Period, the Company will (i) cease all operations except for the purpose of winding up; (ii) as promptly as reasonably possible but not more than ten business days thereafter, redeem the Public Shares, at a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account, including interest earned on the funds held in the Trust Account and not previously released to the Company for Permitted Withdrawals (less up to $100,000 of interest to pay dissolution expenses), divided by the number of the then-outstanding Public Shares, which redemption will completely extinguish Public Shareholders’ rights as shareholders (including the right to receive further liquidation distributions, if any); and (iii) as promptly as reasonably possible following such redemption, subject to the approval of the remaining shareholders and the board of directors, liquidate and dissolve, subject in the case of clauses (ii) and (iii) to the Company’s obligations under Cayman Islands law to provide for claims of creditors and the requirements of other applicable law. There will be no redemption rights or liquidating distributions with respect to the Company’s warrants, which will expire worthless if the Company does not consummate an initial Business Combination within 24 months from the closing of the Initial Public Offering.

The ordinary shares subject to redemption were recorded at a redemption value and classified as temporary equity upon the completion of the Initial Public Offering, in accordance with Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) Topic 480, “Distinguishing Liabilities from Equity.”

The initial shareholders have agreed to waive their liquidation rights with respect to the Founder Shares and Private Placement Shares included in the Private Placement Units if the Company fails to complete a Business Combination within the Combination Period. However, if the initial shareholders acquire Public Shares in or after the Initial Public Offering, they will be entitled to liquidating distributions from the Trust Account with respect to such Public Shares if the Company fails to complete a Business Combination within the Combination Period. The underwriters have agreed to waive their rights to their deferred underwriting commission (see Note 5) held in the Trust Account in the event the Company does not complete a Business Combination within the Combination Period and, in such event, such amounts will be included with the other funds held in the Trust Account that will be available to fund the redemption of the Public Shares.

In the event of such distribution, it is possible that the per share value of the assets remaining available for distribution (including Trust Account assets) will be only $10.00 per share initially held in the Trust Account. In order to protect the amounts held in the Trust Account, the Sponsor has agreed to be liable to the Company if and to the extent any claims by a third party (excluding the Company’s independent registered public accounting firm) for services rendered or products sold to the Company, or a prospective target business with which the Company has entered into a written letter of intent, confidentially or other similar agreement or Business Combination agreement, reduce the amount of funds in the Trust Account to below the lesser of (i) $10.00 per Public Share and (ii) the actual amount per Public Share held in the Trust Account as of the date of the liquidation of the Trust Account if less than $10.00 per Public Share due to reductions in the value of the trust assets. This liability will not apply with respect to any claims by a third party who executed a waiver of any right, title, interest or claim of any kind in or to any monies held in the Trust Account or to any claims under the Company’s indemnity of the underwriters of the Initial Public Offering against certain liabilities, including liabilities under the Securities Act of 1933, as amended (the “Securities Act”).

Moreover, in the event that an executed waiver is deemed to be unenforceable against a third party, the Sponsor will not be responsible to the extent of any liability for such third-party claims. The Sponsor has not made reserves for such indemnification obligations, nor has the Company independently verified whether the Sponsor has sufficient funds to satisfy its indemnity obligations and the Company believes that the Sponsor’s only assets are securities of the Company. Therefore, the Sponsor may not be able to satisfy those obligations. The Company will seek to reduce the possibility that the Sponsor will have to indemnify the Trust Account due to claims of creditors by endeavoring to have all vendors, service providers (excluding the Company’s independent registered public accounting firm), prospective target businesses or other entities with which the Company does business, execute agreements with the Company waiving any right, title, interest or claim of any kind in or to monies held in the Trust Account.

Note 2 — Basis of Presentation and Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and in accordance with the instructions to Form 10-Q and Article 8 of Regulation S-X of the U.S. Securities and Exchange Commission (“SEC”). Certain information or footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted, pursuant to the rules and regulations of the SEC for interim financial reporting. Accordingly, they do not include all the information and footnotes necessary for a complete presentation of financial position, results of operations, or cash flows. In the opinion of management, the accompanying unaudited condensed financial statements include all adjustments, consisting of a normal recurring nature, which are necessary for a fair presentation of the financial position, operating results and cash flows for the periods presented.

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The accompanying unaudited condensed financial statements should be read in conjunction with the Company’s final prospectus in connection with its Initial Public Offering as filed with the SEC on September 30, 2025, as well as the Company’s Current Report on Form 8-K, as filed with the SEC on October 7, 2025. The interim results for the three months ended September 30, 2025 and the period from March 24, 2025 (inception) through September 30, 2025, are not necessarily indicative of the results to be expected for the year ending December 31, 2025 or for any future periods.

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Liquidity

The Company’s liquidity needs up to September 30, 2025 had been satisfied through the loan under an unsecured promissory note from the Sponsor of up to $300,000. On October 1, 2025, the Company repaid the total outstanding balance of the Promissory Note amounting to $212,377 (see Note 4). As of September 30, 2025, the Company had cash of $2,000,000 and working capital deficit of $7,654,068.

In order to fund working capital deficiencies or finance transaction costs in connection with a Business Combination, the Sponsor or an affiliate of the Sponsor, or certain of the Company’s officers and directors may, but is not obligated to, loan the Company funds as may be required (the “Working Capital Loans”). If the Company completes a Business Combination, the Company would repay such loaned amounts at that time. Up to $1,500,000 of such Working Capital Loans may be converted into private placement units upon consummation of the Business Combination at a price of $10.00 per unit. The units would be identical to the Private Placement Units. As of September 30, 2025, the Company had no borrowings under the Working Capital Loans.

Subsequent to the quarterly period covered by this report, on October 1, 2025, the Company consummated the Initial Public Offering of 46,000,000 Units, which includes the full exercise by the underwriters of their over-allotment option in the amount of 6,000,000 Units, at $10.00 per Unit, generating gross proceeds of $460,000,000. Simultaneously with the closing of the Initial Public Offering, the Company consummated the sale of 900,000 Private Placement Units at a price of $10.00 per Private Placement Unit, in a private placement to the Sponsor, generating gross proceeds of $9,000,000. As a result of the Initial Public Offering, as of October 1, 2025, the Company had cash of $1,227,213 and working capital of $1,176,612.

In connection with the Company’s assessment of going concern considerations in accordance with ASC 205-40, “Presentation of Financial Statements - Going Concern,” the Company does not believe it will need to raise additional funds in order to meet the expenditures required for operating its business. However, if the estimate of the costs of identifying a target business, undertaking in-depth due diligence and negotiating a Business Combination are less than the actual amount necessary to do so, the Company may have insufficient funds available to operate its business prior to the initial Business Combination. The Company has the Completion Window to complete the initial Business Combination. Management has determined that the Company has sufficient funds to finance the working capital needs of the Company within one year from the date of issuance of the financial statements.

Emerging Growth Company

The Company is an “emerging growth company,” as defined in Section 2(a) of the Securities Act, as modified by the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), and it may take advantage of certain exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies including, but not limited to, not being required to comply with the independent registered public accounting firm attestation requirements of Section 404 of the Sarbanes-Oxley Act, reduced disclosure obligations regarding executive compensation in its periodic reports and proxy statements, and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and shareholder approval of any golden parachute payments not previously approved.

Further, Section 102(b)(1) of the JOBS Act exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that an emerging growth company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such an election to opt out is irrevocable. The Company has elected not to opt out of such extended transition period, which means that when a standard is issued or revised and it has different application dates for public or private companies, the Company, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard. This may make comparison of the Company’s financial statements with another public company that is neither an emerging growth company nor an emerging growth company that has opted out of using the extended transition period difficult or impossible because of the potential differences in accounting standards used.

Use of Estimates

The preparation of the unaudited condensed financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the unaudited condensed financial statements and the reported amounts of expenses during the reporting period.

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Making estimates requires management to exercise significant judgment. It is at least reasonably possible that the estimate of the effect of a condition, situation or set of circumstances that existed at the date of the unaudited condensed financial statements, which management considered in formulating its estimate, could change in the near term due to one or more future confirming events. Accordingly, the actual results could differ significantly from those estimates.

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Cash and Cash Equivalents

The Company considers all short-term investments with an original maturity of three months or less when purchased to be cash equivalents. The Company had $2,000,000 in cash and no cash equivalents as of September 30, 2025.

Cash Held in Trust Account

As of September 30, 2025, the assets held in the Trust Account, amounting to $7,000,000, were held in cash. The balance consists of proceeds received in advance from the Sponsor in connection with the private placement sale consummated simultaneously with the closing of the Initial Public Offering.

Concentration of Credit Risk

Financial instruments that potentially subject the Company to concentrations of credit risk consist of a cash account in a financial institution, which, at times, may exceed the Federal Deposit Insurance Corporation coverage limit of $250,000. Any loss incurred or a lack of access to such funds could have a significant adverse impact on the Company’s financial condition, results of operations, and cash flows.

Deferred Offering Costs

The Company complies with the requirements of the ASC 340-10-S99 and SEC Staff Accounting Bulletin Topic 5A, “Expenses of Offering.” Offering costs consist principally of professional and registration fees that are related to the Initial Public Offering. FASB ASC 470-20, “Debt with Conversion and Other Options,” addresses the allocation of proceeds from the issuance of convertible debt into its equity and debt components. The Company applies this guidance to allocate Initial Public Offering proceeds from the Units between Class A ordinary shares and warrants, prorate, allocating the Initial Public Offering proceeds to the assigned value of the warrants and to the Class A ordinary shares. On October 1, 2025, offering costs allocated to the Public Shares were charged to temporary equity, and offering costs allocated to the Public Warrants and Private Placement Units were charged to shareholders’ deficit as Public Warrants and Private Placement Warrants after management’s evaluation were accounted for under equity treatment.

Fair Value of Financial Instruments

The fair value of the Company’s assets and liabilities, which qualify as financial instruments under FASB ASC 820, “Fair Value Measurements and Disclosures,” approximates the carrying amounts represented in the balance sheet, primarily due to its short-term nature.

Fair Value Measurements

Fair value is defined as the price that would be received for sale of an asset or paid for transfer of a liability, in an orderly transaction between market participants at the measurement date. U.S. GAAP establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). These tiers include:

• Level 1, defined as observable inputs such as quoted prices (unadjusted) for identical instruments in active markets;

• Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable such as quoted prices for similar instruments in active markets or quoted prices for identical or similar instruments in markets that are not active; and

• Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions, such as valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable.

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In some circumstances, the inputs used to measure fair value might be categorized within different levels of the fair value hierarchy. In those instances, the fair value measurement is categorized in its entirety in the fair value hierarchy based on the lowest level input that is significant to the fair value measurement.

Income Taxes

The Company follows the asset and liability method of accounting for income taxes under FASB ASC Topic 740, “Income Taxes.” Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statements carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that included the enactment date. Valuation allowances are established, when necessary, to reduce deferred tax assets to the amount expected to be realized.

ASC Topic 740 prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more likely than not to be sustained upon examination by taxing authorities. The Company’s management determined that the Cayman Islands is the Company’s major tax jurisdiction. The Company recognizes accrued interest and penalties related to unrecognized tax benefits as income tax expense. As of September 30, 2025, there were no unrecognized tax benefits and no amounts accrued for interest and penalties. The Company is currently not aware of any issues under review that could result in significant payments, accruals or material deviation from its position.

The Company is considered to be an exempted Cayman Islands company with no connection to any other taxable jurisdiction and is presently not subject to income taxes or income tax filing requirements in the Cayman Islands or the United States. As such, the Company’s tax provision was zero for the periods presented.

Net Loss per Class B Ordinary Share

Net loss per Class B ordinary share is computed by dividing net loss by the weighted average number of Class B ordinary shares outstanding during the period, excluding Class B ordinary shares subject to forfeiture. Weighted average shares were reduced for the effect of an aggregate of 1,500,000 Class B ordinary shares that were subject to forfeiture if the over-allotment option was not exercised by the underwriters (see Note 4). For the three months ended September 30, 2025 and the period from March 24, 2025 (inception) through September 30, 2025, the Company did not have any dilutive securities and other contracts that could, potentially, be exercised or converted into Class B ordinary shares and then share in the earnings of the Company. As a result, diluted loss per Class B ordinary share is the same as basic loss per Class B ordinary share for the periods presented.

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Warrant Instruments

The Company accounted for the Public Warrants and Private Placement Warrants issued in connection with the Initial Public Offering and the private placement in accordance with the guidance contained in FASB ASC Topic 815, “Derivatives and Hedging”. Accordingly, the Company evaluated and classified the warrant instruments under equity treatment at their assigned values. Such guidance provides that the warrants described above will not be precluded from equity classification. Equity-classified contracts are initially measured at fair value (or allocated value). Subsequent changes in fair value are not recognized as long as the contracts continue to be classified in equity in accordance with ASC 480 and ASC 815.

Recent Accounting Pronouncements

The Company evaluates its financial instruments to determine if such instruments are derivatives or contain features that qualify as embedded derivatives in accordance with ASC Topic 815, “Derivatives and Hedging.” For derivative financial instruments that are accounted for as liabilities, the derivative instrument is initially recorded at its fair value on the grant date and is then re-valued at each reporting date, with changes in the fair value reported in the statements of operations. The classification of derivative instruments, including whether such instruments should be recorded as liabilities or as equity, is evaluated at the end of each reporting period. Derivative liabilities are classified in the balance sheet as current or non-current based on whether or not net cash settlement or conversion of the instrument could be required within 12 months of the balance sheet date. The underwriters’ over-allotment option is deemed to be a freestanding financial instrument indexed on the contingently redeemable shares and will be accounted for as a liability pursuant to ASC 480 if not fully exercised at the time of the Initial Public Offering. Subsequently on October 1, 2025, the Company consummated the Initial Public Offering of 46,000,000 Units, which includes the full exercise by the underwriters of their over-allotment option in the amount of 6,000,000 Units, as such no derivative financial instrument was recorded.

Share-Based Payment Arrangements

The Company accounts for stock awards in accordance with ASC 718, “Compensation—Stock Compensation,” which requires that all equity awards be accounted for at their “fair value.” Fair value is measured on the grant date and is equal to the underlying value of the stock. Costs equal to these fair values are recognized ratably over the requisite service period based on the number of awards that are expected to vest, in the period of grant for awards that vest immediately and have no future service condition, or in the period the awards vest immediately after meeting a performance condition becomes probable (i.e., the occurrence of a Business Combination). For awards that vest over time, cumulative adjustments in later periods are recorded to the extent actual forfeitures differ from the Company’s initial estimates; previously recognized compensation cost is reversed if the service or performance conditions are not satisfied and the award is forfeited.

Recent Accounting Pronouncements

Management does not believe that any recently issued, but not yet effective, accounting standards if currently adopted would have a material effect on the accompanying financial statements.

Note 3 — Initial Public Offering

In the Initial Public Offering on October 1, 2025, the Company sold 46,000,000 Units, which includes the full exercise by the underwriters of their over-allotment option in the amount of 6,000,000 Units, at a purchase price of $10.00 per Unit. Each Unit consists of one Class A ordinary share, and one-fifth of one redeemable Public Warrant. Each Public Warrant entitles the holder to purchase one Class A ordinary share at a price of $11.50 per share, subject to adjustment (see Note 6).

Note 4 — Related Party Transactions

Founder Shares

On March 26, 2025, Bain Capital GSS Investment Sponsor LLC paid $25,000 to cover certain of the Company’s expenses in exchange for the issuance of 11,500,000 Class B ordinary shares, par value $0.0001 (the “Founder Shares”). The Sponsor has agreed to forfeit up to 1,500,000 Founder Shares to the extent that the over-allotment option is not exercised in full by the underwriters. The forfeiture will be adjusted to the extent that the over-allotment option is not exercised in full by the underwriters so that the Founder Shares will represent 20% of the Company’s issued and outstanding ordinary shares (excluding the Private Placement Units and assuming the initial shareholders do not purchase any Public Shares in the Initial Public Offering) after the Initial Public Offering. On October 1, 2025, the underwriters exercised their over-allotment option in full as part of the closing of the Initial Public Offering. As such, the 1,500,000 Founder Shares are no longer subject to forfeiture.

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On August 25, 2025, the Sponsor transferred an aggregate of 30,000 Founder Shares to the director of the Company in exchange for his services as director through the Company’s initial Business Combination. The Founder Shares shall return to the Sponsor if the director is no longer serving the Company on or prior to the initial Business Combination. The transfer of Founder Shares to the director is in the scope of FASB ASC Topic 718, “Compensation-Stock Compensation” (“ASC 718”). Under ASC 718, stock-based compensation associated with equity classified awards is measured at fair value upon the assignment date. The total fair value of the 30,000 Founder Shares transferred to the director on August 25, 2025 was $52,290 or $1.743 per share. The Company established the initial fair value Founder Shares on August 25, 2025, the date of the grant agreement, using a calculation prepared by a third party valuation team which takes into consideration the underlying share price of $9.95, term of 0.10, risk-free rate of 4.34%, and a market adjustment of 17.6%. The Founder Shares are classified as Level 3 at the measurement date due to the use of unobservable inputs, and other risk factors. The membership interests were assigned subject to a performance condition (i.e., providing services through Business Combination). Stock-based compensation would be recognized at the date a Business Combination is considered probable (i.e., upon consummation of a Business Combination) in an amount equal to the number of Founder Shares that ultimately vest times the assignment date fair value per share (unless subsequently modified) less the amount initially received for the transfer of Founder Shares. As of September 30, 2025, the Company determined that the initial Business Combination is not considered probable and therefore no compensation expense has been recognized.

Subject to limited exceptions, the initial shareholders have agreed not to transfer, assign or sell any Founder Shares until the earlier to occur of: (A) 180 days after the completion of the initial Business Combination and (B) subsequent to the initial Business Combination, the date on which the Company completes a liquidation, merger, share exchange, reorganization or other similar transaction that results in all of the Public Shareholders having the right to exchange their ordinary shares for cash, securities or other property.

Private Placement Units

Simultaneously with the closing of the Initial Public Offering, the Sponsor purchased an aggregate of 900,000 Private Placement Units at $10.00 per Private Placement Unit, for an aggregate purchase price of $9,000,000, in a private placement. Such Private Placement Units are identical to the Units sold in the Initial Public Offering. If the Company does not consummate an initial Business Combination within 24 months from the closing of the Initial Public Offering (or 27 months from the closing of the Initial Public Offering if the Company has executed a letter of intent, agreement in principle or definitive agreement for the initial Business Combination within 24 months from the closing of the Initial Public Offering), any proceeds from the sale of the Private Placement Units held in the Trust Account will be used to fund the redemption of the Public Shares (subject to the requirements of applicable law). Holders of the Private Placement Units have entered into an agreement, pursuant to which they have agreed to waive their redemption rights with respect to their Founder Shares, Private Placement Shares included in any Private Placement Units and Public Shares in connection with (i) the completion of the initial Business Combination and (ii) the implementation by the directors of, following a shareholder vote to approve, an amendment to the amended and restated memorandum and articles of association (A) that would modify the substance or timing of the obligation to provide holders of the Class A ordinary shares the right to have their shares redeemed or repurchased in connection with the initial Business Combination or to redeem 100% of the Public Shares if the Company does not complete the initial Business Combination within the Combination Period from the closing of this Initial Public Offering or (B) with respect to any other provision relating to the rights of holders of the Class A ordinary shares. Subject to limited exceptions, the Private Placement Units (including any Private Placement Shares or Private Placement Warrants included in such Private Placement Units) will not be transferable or salable until 30 days after the completion of the initial Business Combination. Certain proceeds from the Private Placement Units will be added to the proceeds from the Initial Public Offering to be held in the Trust Account.

Related Party Loans

On March 26, 2025, Bain Capital GSS Investment Sponsor LLC agreed to loan the Company an aggregate of up to $300,000 to cover expenses related to the Initial Public Offering pursuant to a promissory note (the “Note”). This loan is non-interest bearing and payable on the earlier of September 30, 2026 or the completion of the Initial Public Offering. As of September 30, 2025, the Company had outstanding borrowings of $212,377 under the Promissory Note. On October 1, 2025, the Company repaid the total outstanding balance of the Promissory Note amounting to $212,377. Borrowings under the Note are no longer available.

Due to Sponsor

As of September 30, 2025, the Company had $9,000,000 due to sponsor, representing the advance payment by the Sponsor in relation to the private placement sale which was consummated simultaneously with the closing of the Initial Public Offering. $7,000,000 of which was deposited into the Trust Account as of September 30, 2025, and the remaining $2,000,000 represents the cash held outside of Trust Account.

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Working Capital Loans

In addition, in order to finance transaction costs in connection with a Business Combination, the Sponsor or an affiliate of the Sponsor, or certain of the Company’s officers and directors may, but are not obligated to, loan the Company funds as may be required (“Working Capital Loans”). If the Company completes a Business Combination, the Company may repay the Working Capital Loans out of the proceeds of the Trust Account released to the Company. Otherwise, the Working Capital Loans may be repaid only out of funds held outside the Trust Account. In the event that a Business Combination does not close, the Company may use a portion of the proceeds held outside the Trust Account to repay the Working Capital Loans but no proceeds held in the Trust Account would be used to repay the Working Capital Loans. Up to $1,500,000 of such Working Capital Loans may be converted into private placement units upon consummation of the Business Combination at a price of $10.00 per unit. The units would be identical to the Private Placement Units. Except for the foregoing, the terms of such Working Capital Loans, if any, have not been determined and no written agreements exist with respect to such loans. The Working Capital Loans would either be repaid upon consummation of a Business Combination, without interest,

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or, at the lender’s discretion, up to $1,500,000 of such Working Capital Loans may be convertible into shares of the post Business Combination entity at a price of $10.00 per unit. The Private Placement Units issued upon conversion of any such loans would be identical to the Private Placement Units sold in a private placement concurrently with the Initial Public Offering. As of September 30, 2025, the company had no outstanding borrowings under the Working Capital Loans.

Administrative Services and Indemnification Agreement

Pursuant to the administrative services and indemnification agreement between the Company and the Sponsor, commencing on September 29, 2025 through the earlier of consummation of the initial Business Combination and the Company’s liquidation, the Company will pay the Sponsor for office space, secretarial and administrative services provided to the Company in the amount of $20,000 per month. In addition, the Company has agreed, pursuant to such administrative services and indemnification agreement with the Sponsor relating to the monthly payment for services outlined therein, that the Company will indemnify the Sponsor and its affiliates, including Bain Capital LP and its affiliates (“Bain”), from any liability arising with respect to their activities in connection with the Company’s affairs, including, but not limited to, any claims, made by the Company or a third party, (i) arising out of or relating to the Initial Public Offering or the Company’s operations or conduct of the Company’s business, (ii) in respect of any investment opportunities sourced by the Sponsor and its affiliates, including Bain, and/or (iii) against the Sponsor and/or Bain alleging any expressed or implied management or endorsement by the Sponsor and/or Bain of any of the Company’s activities or any express or implied association between the Sponsor and/or Bain, on the one hand, and the Company or any of its other affiliates, on the other hand, which agreement will provide that the indemnified parties cannot access the funds held in our Trust Account. As of September 30, 2025, no amounts were incurred under this agreement.

Note 5 — Commitments and Contingencies

Registration and Shareholder Rights

Holders of the Founder Shares and Private Placement Units, including from time to time the Public Shares, Private Placement Units that may be issued upon conversion of Working Capital Loans, any Private Placement Shares or Private Placement Warrants included in Private Placement Units, any Class A ordinary shares issuable upon conversion of Founder Shares or upon exercise of warrants they may hold or acquire, and any warrants, including Private Placement Warrants, that they may hold or acquire, will be entitled to registration rights pursuant to a registration and shareholder rights agreement signed on September 29, 2025. The holders of these securities are entitled to make up to three demands, excluding short form demands, that the Company register such securities. In addition, the holders have certain piggyback registration rights with respect to registration statements filed subsequent to the completion of the initial Business Combination. The Company will bear the expenses incurred in connection with the filing of any such registration statements. Further, the Sponsor, upon and following consummation of an initial Business Combination, will be entitled to nominate three individuals for appointment to the Company’s board of directors, as long as the Sponsor holds any securities covered by the registration and shareholder rights agreement.

Underwriting Agreement

The Company granted the underwriters a 45-day option from the final prospectus relating to the Initial Public Offering to purchase up to 6,000,000 additional Public Shares to cover over-allotments, if any, at the Initial Public Offering price less the underwriting discounts and commissions. On October 1, 2025, the underwriters elected to fully exercise their over-allotment option to purchase an additional 6,000,000 Units at a price of $10.00 per Unit.

The underwriters were entitled to an underwriting discount of $0.20 per Public Share, excluding any proceeds from Units sold pursuant to the underwriters’ over-allotment option, or $8,000,000 in the aggregate, which was paid upon the closing of the Initial Public Offering. The underwriters paid the Company an aggregate amount of $1,000,000 at the closing of the Initial Public Offering as reimbursement to the Company for certain of its expenses and fees incurred in connection with the Initial Public Offering. In addition, $0.35 per Public Share, or $16,100,000 in the aggregate, will be payable to the underwriters for deferred underwriting commissions. The deferred fee will become payable to the underwriters from the amounts held in the Trust Account solely in the event that the Company completes a Business Combination, subject to the terms of the underwriting agreement.

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Risks and Uncertainties

The Company’s ability to complete an initial Business Combination may be adversely affected by various factors, many of which are beyond the Company’s control. The Company’s ability to consummate an initial Business Combination could be impacted by, among other things, changes in laws or regulations, downturns in the financial markets or in economic conditions, inflation, fluctuations in interest rates, increases in tariffs, supply chain disruptions, declines in consumer confidence and spending, public health considerations, and geopolitical instability, such as the military conflicts in Ukraine and the Middle East. The Company cannot at this time predict the likelihood of one or more of the above events, their duration or magnitude or the extent to which they may negatively impact the Company’s ability to complete an initial Business Combination.

Note 6 — Shareholders’ Deficit

Preference Shares — The Company is authorized to issue 1,000,000 preference shares with a par value of $0.0001 per share, with such designations, voting and other rights and preferences as may be determined from time to time by the Company’s board of directors. As of September 30, 2025, there were no preference shares issued or outstanding.

Class A Ordinary Shares — The Company is authorized to issue 200,000,000 Class A ordinary shares with a par value of $0.0001 per share. As of September 30, 2025, there were no Class A ordinary shares issued or outstanding.

Class B Ordinary Shares — The Company is authorized to issue 20,000,000 Class B ordinary shares with a par value of $0.0001 per share. As of September 30, 2025, there were 11,500,000 Class B ordinary shares issued and outstanding. Up to 1,500,000 Class B ordinary shares were subject to forfeiture if the over-allotment option was not exercised in full or in part by the underwriters.

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Except as described below, ordinary shareholders of record are entitled to one vote for each share held on all matters to be voted on by shareholders and holders of Class A ordinary shares and holders of Class B ordinary shares will vote together as a single class on all matters submitted to a vote of the shareholders except as required by law. Unless otherwise specified in the amended and restated memorandum and articles of association, or as required by applicable provisions of the Companies Act or applicable stock exchange rules, the affirmative vote of a majority of the ordinary shares that are represented in person or by proxy and are voted is required to approve any such matter voted on by the shareholders. Approval of certain actions will require a special resolution under Cayman Islands law, being the affirmative vote of at least two-thirds of the votes cast by such shareholders as, being entitled to do so, vote in person or, where proxies are allowed, by proxy at the applicable general meeting of the company, and pursuant to the amended and restated memorandum and articles of association; such actions include amending the amended and restated memorandum and articles of association and approving a statutory merger or consolidation with another company. The board of directors is divided into three classes, each of which will generally serve for terms of three years with only one class of directors being elected in each year. There is no cumulative voting with respect to the appointment of directors, with the result that the holders of more than 50% of the shares entitled to vote and voted for the appointment of directors can elect all of the directors. The shareholders are entitled to receive ratable dividends when, as and if declared by the board of directors out of funds legally available therefor. Prior to the initial Business Combination, only holders of the Founder Shares will have the right to vote on the appointment of directors. Holders of the Public Shares will not be entitled to vote on the appointment of directors during such time. Incumbent directors shall also have the ability to appoint additional directors or to appoint replacement directors in the event of a casual vacancy in accordance with the amended and restated memorandum and articles of association. Further, prior to the closing of the Business Combination, only holders of the Class B ordinary shares will be entitled to vote on transferring the Company by way of continuation in a jurisdiction outside the Cayman Islands (including any special resolution required to amend the constitutional documents of the Company or to adopt new constitutional documents of the company, in each case, as a result of the company approving a transfer by way of continuation in a jurisdiction outside the Cayman Islands) and, as a result, the Sponsor will be able to approve any such proposal without the vote of any other shareholder. The provisions of the amended and restated memorandum and articles of association governing the appointment of directors prior to the Business Combination and the Company’s continuation in a jurisdiction outside the Cayman Islands prior to the initial Business Combination may only be amended by a special resolution passed by holders representing at least two-thirds of the Company’s outstanding Class B ordinary shares. Holders of the public shares will not be entitled to vote on a special resolution to amend such provisions of the amended and restated memorandum and articles of association during such period.

Subject to adjustment for share subdivisions, share capitalizations, reorganizations, recapitalizations and the like, and subject to further adjustment as provided herein, the Founder Shares, which are designated as Class B ordinary shares, will be convertible at the option of the holder on a one-for-one basis or will automatically convert into Class A ordinary shares (such Class A ordinary shares delivered upon conversion will not have any redemption rights or be entitled to liquidating distributions from the Trust Account if the Company fails to consummate an initial business combination) concurrently with or immediately following the consummation of the initial Business Combination at a ratio such that the number of Class A ordinary shares issuable upon conversion of all Founder Shares (including, for the avoidance of doubt for purposes of the calculation described hereafter, the Class A ordinary shares that may have been issued upon conversion of Founder Shares at the option of the holder thereof prior to the consummation of the initial Business Combination) will equal, in the aggregate, on an as-converted basis, 20% of the sum of (i) the total number of ordinary shares issued and outstanding (excluding the Private Placement Shares included in the Private Placement Units and including any Class A ordinary share issued pursuant to the underwriters’ over-allotment option) upon consummation of the Initial Public Offering, plus (ii) the sum of the total number of Class A ordinary shares issued or deemed issued or issuable upon conversion or exercise of any equity-linked securities or rights issued or deemed issued, by the Company in connection with or in relation to the consummation of the initial Business Combination, excluding any Class A ordinary shares or equity-linked securities exercisable for or convertible into Class A ordinary shares issued, deemed issued, or to be issued, to any seller in the Business Combination and any private placement-equivalent units issued to the Sponsor, members of the management team or any of their affiliates upon conversion of working capital loans made to the Company. In no event will the Class B ordinary shares convert into Class A ordinary shares at a rate of less than one to one.

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Warrants — As of September 30, 2025, there were no Warrants outstanding. Public Warrants may only be exercised for a whole number of shares. No fractional Public Warrants will be issued upon separation of the Units and only whole Public Warrants will trade.

The Public Warrants will become exercisable 30 days after the completion of a Business Combination, provided in each case that the Company has an effective registration statement under the Securities Act covering the Class A ordinary shares issuable upon exercise of the Public Warrants and a current prospectus relating to them is available and such shares are registered, qualified or exempt from registration under the securities, or blue sky laws of the state of residence of the holder (or the Company permits holders to exercise their warrants on a cashless basis under certain circumstances). The Company is registering the Class A ordinary shares issuable upon exercise of the Public Warrants in the registration statement of the Initial Public Offering, in which the financial statement are included, forms a part because the Public Warrants will become exercisable 30 days after the completion of a Business Combination, which may be within one year of the Initial Public Offering. However, because the Public Warrants will be exercisable until their expiration date of up to five years after the completion of the Business Combination, in order to comply with the requirements of Section 10(a)(3) of the Securities Act following the consummation of the Business Combination, the Company has agreed that as soon as practicable, but in no event later than 20 business days after the closing of the initial Business Combination, the Company will use commercially reasonable efforts to file with the SEC a registration statement covering the Class A ordinary shares issuable upon exercise of the warrants and to maintain a current prospectus relating to those Class A ordinary shares until the warrants expire or are redeemed, as specified in the warrant agreement. If a registration statement covering the Class A ordinary shares issuable upon exercise of the warrants is not effective by the 60th day after the closing of the initial Business Combination, warrant holders may, until such time as there is an effective registration statement and during any period when the Company will have failed to maintain an effective registration statement, exercise warrants on a “cashless basis” in accordance with Section 3(a)(9) of the Securities Act or another exemption. Notwithstanding the above, if the Class A ordinary shares are at the time of any exercise of a warrant not listed on a national securities exchange such that they satisfy the definition of a “covered security” under Section 18(b)(1) of the Securities Act, the Company may, at its option, require holders of Public Warrants who exercise their warrants to do so on a “cashless basis” and, in the event the Company so elects, the Company will not be required to file or maintain in effect a registration statement, and in the event the Company does not so elect, it will use commercially reasonable efforts to register or qualify the shares under applicable blue sky laws to the extent an exemption is not available.

The warrants have an exercise price of $11.50 per share, subject to adjustments, and will expire five years after the completion of a Business Combination or earlier upon redemption or liquidation. In addition, if (x) the Company issues additional Class A ordinary shares or equity-linked securities for capital raising purposes in connection with the closing of the initial Business Combination at an issue price or effective issue price of less than $9.20 per Class A ordinary share (with such issue price or effective issue price to be determined in good faith by the board of directors and, in the case of any such issuance to the Sponsor or its affiliates, without taking into account any Founder Shares held by the Sponsor or its affiliates, as applicable, prior to such issuance) (the “Newly Issued Price”), (y) the aggregate gross proceeds from such issuances represent more than 60% of the total equity proceeds, and interest thereon, available for the funding of the initial Business Combination on the date of the consummation of the initial Business Combination (net of redemptions), and (z) the volume weighted average trading price of Class A ordinary shares during the 20-trading day period starting on the trading day prior to the day on which the Company consummates its initial Business Combination (such price, the “Market Value”) is below $9.20 per share, then the exercise price of the warrants will be adjusted (to the nearest cent) to be equal to 115% of the higher of the Market Value and the Newly Issued Price, the $18.00 per share redemption trigger price will be adjusted (to the nearest cent) to be equal to 180% of the higher of the Market Value and the Newly Issued Price. See “—Redemption of warrants when the price per Class A ordinary share equals or exceeds $18.00” below.

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The Private Placement Warrants are identical to the Public Warrants underlying the Units sold in the Initial Public Offering, except (i) that the Private Placement Warrants and the Class A ordinary shares issuable upon exercise of the Private Placement Warrants will not be transferable, assignable or salable until 30 days after the completion of a Business Combination, subject to certain limited exceptions, (ii) the Private Placement Warrants will be non-redeemable and (iii) the Private Placement Warrants will be exercisable on a cashless basis and have certain registration rights.

Redemption of warrants when the price per Class A ordinary shares equals or exceeds $18.00. Once the warrants become exercisable, the Company may redeem the outstanding warrants (except as described herein with respect to the Private Placement Warrants):

• in whole and not in part;

• at a price of $0.01 per warrant;

• upon a minimum of 30 days’ prior written notice of redemption, which we refer to as the 30-day redemption period; and

• if, and only if, the last reported sale price of the Class A ordinary shares equals or exceeds $18.00 per share (as adjusted) for any 20 trading days within a 30-trading day period ending on the third trading day prior to the date on which the Company sends the notice of redemption to the warrant holders.

The Company will not redeem the warrants as described above unless a registration statement under the Securities Act covering the issuance of the Class A ordinary shares issuable upon exercise of the warrants is then effective and a current prospectus relating to those Class A ordinary shares is available throughout the 30-day redemption period.

In no event will the Company be required to net cash settle any warrant. If the Company has not completed a Business Combination within the Combination Period and the Company liquidates the funds held in the Trust Account, holders of warrants will not receive any of such funds with respect to their warrants, nor will they receive any distribution from the Company’s assets held outside of the Trust Account with the respect to such warrants. Accordingly, the warrants may expire worthless.

Note 7 — Segment Information

ASC Topic 280, “Segment Reporting,” establishes standards for companies to report in their financial statement information about operating segments, products, services, geographic areas, and major customers. Operating segments are defined as components of an enterprise that engage in business activities from which it may recognize revenues and incur expenses, and for which separate financial information is available that is regularly evaluated by the Company’s chief operating decision maker (“CODM”), or group, in deciding how to allocate resources and assess performance.

The Company’s CODM has been identified as the Chief Executive Officer, who reviews the assets, operating results, and financial metrics for the Company as a whole to make decisions about allocating resources and assessing financial performance. Accordingly, management has determined that there is only one reportable segment.

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The CODM assesses performance for the single segment and decides how to allocate resources based on net income or loss that also is reported on the statements of operations as net income or loss. The measure of segment assets is reported on the balance sheet as total assets. When evaluating the Company’s performance and making key decisions regarding resource allocation the CODM reviews the key metrics below:

		September 30, 2025
Cash		$	2,000,000
Cash held in Trust Account		$	7,000,000

		For the Three Months Ended September 30, 2025				For the Period from March 24, 2025 (Inception) Through September 30, 2025
General and administrative expenses		$	20,600			$	71,168

General and administrative costs are reviewed and monitored by the CODM to manage and forecast cash to ensure enough capital is available to complete a business combination or similar transaction within the business combination period. The CODM also reviews general and administrative costs to manage, maintain and enforce all contractual agreements to ensure costs are aligned with all agreements and budget. Formation and general and administrative costs, as reported on the statements of operations, are the significant segment expenses provided to the CODM on a regular basis.

Note 8 — Subsequent Events

The Company evaluated subsequent events and transactions that occurred after the balance sheet date up to the date that the unaudited condensed financial statements were issued. Based upon this review, other than as described below, the Company did not identify any subsequent events that would have required adjustment or disclosure in the unaudited condensed financial statements.

On October 1, 2025, the Company consummated the Initial Public Offering of 46,000,000 Units, which includes the full exercise by the underwriters of their over-allotment option in the amount of 6,000,000 Units, at $10.00 per Unit, generating gross proceeds of $460,000,000. Simultaneously with the closing of the Initial Public Offering, the Company consummated the sale of 900,000 Private Placement Units at a price of $10.00 per Private Placement Unit, in a private placement to the Sponsor, generating gross proceeds of $9,000,000.

On October 1, 2025, in connection with the closing of the Initial Public Offering, the underwriters were entitled a cash underwriting discount of $0.20 per Public Share, excluding any proceeds from Units sold pursuant to the underwriters’ over-allotment option, or $8,000,000 in the aggregate, which was paid upon the closing of the Initial Public Offering. The underwriters paid the Company an aggregate amount of $1,000,000 at the closing of the Initial Public Offering as reimbursement to the Company for certain of its expenses and fees incurred in connection with the Initial Public Offering. In addition, $0.35 per Public Share, or $16,100,000 in the aggregate, will be payable to the underwriters for deferred underwriting commissions. The deferred fee will become payable to the underwriters from the amounts held in the Trust Account solely in the event that the Company completes a Business Combination, subject to the terms of the underwriting agreement.

On October 1, 2025, the Company repaid the total outstanding balance of the Promissory Note amounting to $212,377. Borrowings under the Note are no longer available.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

References in this report (the “Quarterly Report”) to “we,” “us” or the “Company” refer to Bain Capital GSS Investment Corp. References to our “management” or our “management team” refer to our officers and directors, and references to the “Sponsor” refer to Bain Capital GSS Investment Sponsor LLC. The following discussion and analysis of the Company’s financial condition and results of operations should be read in conjunction with the unaudited condensed financial statements and the notes thereto contained elsewhere in this Quarterly Report. Certain information contained in the discussion and analysis set forth below includes forward-looking statements that involve risks and uncertainties.

Special Note Regarding Forward-Looking Statements

This Quarterly Report includes “forward-looking statements” that are not historical facts and involve risks and uncertainties that could cause actual results to differ materially from those expected and projected. All statements, other than statements of historical fact included in this Quarterly Report including, without limitation, statements in this “Management’s Discussion and Analysis of Financial Condition and Results of Operations” regarding the Company’s financial position, business strategy and the plans and objectives of management for future operations, are forward-looking statements. Words such as “expect,” “believe,” “anticipate,” “intend,” “estimate,” “seek” and variations and similar words and expressions are intended to identify such forward-looking statements. Such forward-looking statements relate to future events or future performance, but reflect management’s current beliefs, based on information currently available. A number of factors could cause actual events, performance or results to differ materially from the events, performance and results discussed in the forward-looking statements. For information identifying important factors that could cause actual results to differ materially from those anticipated in the forward-looking statements, please refer to the Risk Factors section of the Company’s final prospectus for its Initial Public Offering (as defined below) filed with the U.S. Securities and Exchange Commission (the “SEC”). The Company’s securities filings can be accessed on the EDGAR section of the SEC’s website at www.sec.gov. Except as expressly required by applicable securities law, the Company disclaims any intention or obligation to update or revise any forward-looking statements whether as a result of new information, future events or otherwise.

Overview

We are a blank check company incorporated on March 24, 2025 as a Cayman Island exempted company and formed for the purpose of effectuating a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more businesses, which we refer to throughout this Quarterly Report as our “initial business combination”. We intend to effectuate our initial business combination using cash from the proceeds of the initial public offering (the “Initial Public Offering”) and the private placement of the Private Placement Units (as defined below), the proceeds of the sale of our shares in connection with our initial business combination (pursuant to forward purchase agreements or backstop agreements we may enter into following the consummation of the Initial Public Offering or otherwise), shares issued to the owners of the target, debt issued to bank or other lenders or the owners of the target, or a combination of the foregoing.

On October 1, 2025, we consummated our Initial Public Offering of 46,000,000 Units, which includes the full exercise by the underwriters of their over-allotment option in the amount of 6,000,000 Units, at $10.00 per Unit, generating gross proceeds of $460,000,000. Simultaneously with the closing of the Initial Public Offering, we consummated the sale of 900,000 Private Placement Units, at a price of $10.00 per Private Placement Unit, in a private placement to the Sponsor, generating gross proceeds of $9,000,000.

We incurred transaction costs amounting to $23,835,700, consisting of $7,000,000 of cash underwriting fee (net of $1,000,000 underwriters’ reimbursement), $16,100,000 of deferred underwriting fee, and $735,700 of other offering costs.

Upon the closing of the Initial Public Offering and the Private Placement, approximately $460.0 million ($10.00 per Unit) of the net proceeds of the Initial Public Offering and certain of the proceeds of the Private Placement were placed in a Trust Account, located in the United States with Continental Stock Transfer & Trust Company acting as trustee, and will be invested only in United States “government securities” within the meaning of Section 2(a)(16) of the Investment Company Act, having a maturity of 185 days or less or in money market funds meeting certain conditions under Rule 2a-7 promulgated under the Investment Company Act which invests only in direct U.S. government treasury obligations, as determined by us, until the earlier of: (i) the completion of a Business Combination and (ii) the distribution of the Trust Account as described below.

Our management has broad discretion with respect to the specific application of the net proceeds of the Initial Public Offering and the sale of Private Placement Units, although substantially all of the net proceeds are intended to be applied generally toward consummating a Business Combination. There is no assurance that we will be able to complete a Business Combination successfully.

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We must complete one or more initial Business Combinations having an aggregate fair market value of at least 80% of the net assets held in the Trust Account (excluding the deferred underwriting commissions and taxes payable on the interest earned on the Trust Account) at the time of the signing of the agreement to enter into the initial Business Combination. However, we will only complete a Business Combination if the post-transaction company owns or acquires 50% or more of the outstanding voting securities of the prospective partner company or otherwise acquires a controlling interest in the prospective party company sufficient for it not to be required to register as an investment company under the Investment Company Act.

If we are unable to complete a Business Combination within the Combination Period, we will (i) cease all operations except for the purpose of winding up; (ii) as promptly as reasonably possible but not more than ten business days thereafter, redeem the Public Shares, at a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account, including interest earned on the funds held in the Trust Account and not previously released to us to pay our income taxes, if any (less up to $100,000 of interest to pay dissolution expenses) divided by the number of the then-outstanding Public Shares, which redemption will completely extinguish public shareholders’ rights as shareholders (including the right to receive further liquidation distributions, if any); and (iii) as promptly as reasonably possible following such redemption, subject to the approval of the remaining shareholders and the board of directors, liquidate and dissolve, subject in the case of clauses (ii) and (iii), to our obligations under Cayman Islands law to provide for claims of creditors and the requirements of other applicable law. There will be no redemption rights or liquidating distributions with respect to our warrants, which will expire worthless if we fail to consummate a Business Combination within the Combination Period.

As of September 30, 2025, we held cash of $2,000,000, cash held in Trust Account of $7,000,000, and current liabilities of $9,654,068. Further, we expect to continue to incur significant costs in the pursuit of our initial business combination. We cannot assure you that our plans to complete an initial business combination will be successful.

Results of Operations

We have neither engaged in any operations nor generated any operating revenues to date. Our only activities from March 24, 2025 (inception) through September 30, 2025 were organizational activities and identifying a target company for a business combination. We do not expect to generate any operating revenues until after the completion of our initial business combination. We will generate non-operating income in the form of interest and dividend income on cash and investments held after the Initial Public Offering. We incur expenses as a result of being a public company (for legal, financial reporting, accounting and auditing compliance), as well as for due diligence expenses.

For the three months ended September 30, 2025 and for the period from March 24, 2025 (inception) through September 30, 2025, we had a net loss of $20,600 and $71,168, respectively, which consists of general and administrative costs.

Liquidity and Capital Resources

Until the consummation of the initial public offering, our only source of liquidity was an initial purchase of shares of Class B ordinary shares, par value $0.0001 per share (the “Founder Shares”), by the Sponsor, and loans from the Sponsor, which were repaid at the closing of the initial public offering. As of September 30, 2025, we had $2,000,000 in cash and working capital deficit of $7,654,068.

Subsequent to the period covered by this Quarterly Report, on October 1, 2025, we consummated the Initial Public Offering of 46,000,000 Units, which includes the full exercise by the underwriters of their over-allotment option in the amount of 6,000,000 Units, at $10.00 per Unit, generating gross proceeds of $460,000,000. Simultaneously with the closing of the Initial Public Offering, we consummated the sale of 900,000 Private Placement Units, at a price of $10.00 per Private Placement Unit, in a private placement to the Sponsor, generating gross proceeds of $9,000,000.

Following the closing of the initial public offering and the private placement, a total of $460,000,000 was placed in the Trust Account. The proceeds held in the trust account will be invested only in U.S. government treasury obligations with a maturity of 185 days or less or in money market funds meeting certain conditions under Rule 2a-7 under the Investment Company Act which invest only in direct U.S. government treasury obligations and/or held as cash or cash items (including in demand deposit accounts). We may withdraw interest from the Trust Account to pay taxes, if any. We intend to use substantially all of the funds held in the Trust Account, including any amounts representing interest earned on the Trust Account (less income taxes payable), to complete our Business Combination. To the extent that our share capital or debt is used, in whole or in part, as consideration to complete our Business Combination, the remaining proceeds held in the Trust Account will be used as working capital to finance the operations of the target business or businesses, make other acquisitions and pursue our growth strategies. We incurred transaction costs amounting to $23,835,700, consisting of $7,000,000 of cash underwriting fee (net of $1,000,000 underwriters’ reimbursement), $16,100,000 of deferred underwriting fee, and $735,700 of other offering costs.

The remaining proceeds from the Initial Public Offering and the Private Placement are held outside the trust account, in the cash operating account amounting to $1,227,213 as of October 1, 2025. Such funds are being used primarily to enable us to identify a target and to negotiate and consummate our initial Business Combination.

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As of September 30, 2025, we had cash of $2,000,000. We intend to use the funds held outside the Trust Account primarily to identify and evaluate target businesses, perform business due diligence on prospective target businesses, travel to and from the offices, plants or similar locations of prospective target businesses or their representatives or owners, review corporate documents and material agreements of prospective target businesses, and structure, negotiate and complete a Business Combination.

In order to fund working capital deficiencies or finance transaction costs in connection with an intended initial business combination, our Sponsor or an affiliate of our Sponsor or certain of our officers and directors may, but are not obligated to, loan us funds as may be required. If we complete our initial Business Combination, we may repay such loaned amounts. In the event that our initial business combination does not close, we may use a portion of the working capital held outside the Trust Account to repay such loaned amounts but no proceeds from our Trust Account would be used for such repayment. Up to $1,500,000 of such loans may be convertible into units of the post-business combination company at a price of $10.00 per unit at the option of the lender. The units would be identical to the Private Placement Units. The terms of such loans, if any, have not been determined and no written agreements exist with respect to such loans. Prior to the completion of our initial Business Combination, we do not expect to seek loans from parties other than our Sponsor, members of our management team or any of their affiliates as we do not believe third parties will be willing to loan such funds and provide a waiver against any and all rights to seek access to funds in our Trust Account.

We do not believe we will need to raise additional funds in order to meet the expenditures required for operating our business. However, if our estimate of the costs of identifying a target business, undertaking in-depth due diligence and negotiating a business combination are less than the actual amount necessary to do so, we may have insufficient funds available to operate our business prior to our business combination. Moreover, we may need to obtain additional financing either to complete our business combination or because we become obligated to redeem a significant number of our public shares upon consummation of our business combination, in which case we may issue additional securities or incur debt in connection with such business combination.

Off-Balance Sheet Arrangements

We did not have any off-balance sheet arrangements as of September 30, 2025.

Contractual Obligations

We do not have any long-term debt, capital lease obligations, operating lease obligations or long-term liabilities, other than an agreement to pay the Sponsor $20,000 per month for office space, secretarial and administrative services.

The underwriters were paid a cash underwriting discount of $0.20 per Unit, or $8,000,000 in the aggregate, upon the closing of the Initial Public Offering excluding the units issued pursuant to the full exercise of the over-allotment option. The underwriters paid the Company an aggregate amount of $1,000,000 at the closing of the Initial Public Offering as reimbursement to the Company for certain of its expenses and fees incurred in connection with the Initial Public Offering. In addition, $0.35 per unit, or $16,100,000 in the aggregate will be payable to the underwriters for deferred underwriting commissions. The deferred fee will become payable to the underwriters from the amounts held in the Trust Account solely in the event that we complete a Business Combination, subject to the terms of the underwriting agreement.

Critical Accounting Policies

The preparation of condensed financial statements and related disclosures in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and income and expenses during the periods reported. Making estimates requires management to exercise significant judgement. It is at least reasonably possible that the estimate of the effect of a condition, situation or set of circumstances that existed at the date of the financial statements, which management considered in formulating its estimate, could change in the near term due to one or more future confirming events. Accordingly, the actual results could materially differ from those estimates. As of September 30, 2025, we did not have any critical accounting estimates to be disclosed.

Item 3. Quantitative and Qualitative Disclosures Regarding Market Risk

This item is not applicable as we are a smaller reporting company.

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Item 4. Controls and Procedures

Disclosure controls and procedures are controls and other procedures that are designed to ensure that information required to be disclosed in our reports filed or submitted under Securities Exchange Act of 1934, as amended (the “Exchange Act”) is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed in our reports filed or submitted under the Exchange Act is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, to allow timely decisions regarding required disclosure.

Evaluation of Disclosure Controls and Procedures

As required by Rules 13a-15 and 15d-15 under the Exchange Act, our Chief Executive Officer and Chief Financial Officer carried out an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures as of September 30, 2025. Based upon their evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures (as defined in Rules 13a-15 (e) and 15d-15 (e) under the Exchange Act) were effective.

Management Report on Internal Controls Over Financial Reporting

This Quarterly Report does not include a report of management’s assessment regarding internal control over financial reporting or an attestation report of our independent registered public accounting firm due to a transition period established by rules of the SEC for newly public companies.

Changes in Internal Control Over Financial Reporting

During the most recently completed fiscal quarter, there has been no change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II - OTHER INFORMATION

Item 1. Legal Proceedings

None

Item 1A. Risk Factors

Factors that could cause our actual results to differ materially from those in this Quarterly Report are any of the risks described in our final prospectus filed with the SEC on September 30, 2025. Any of these factors could result in a significant or material adverse effect on our results of operations or financial condition. Additional risk factors not presently known to us or that we currently deem immaterial may also impair our business or results of operations. As of the date of this Quarterly Report, there have been no material changes to the risk factors disclosed in such final prospectus.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

On October 1, 2025, we consummated the Initial Public Offering of 46,000,000 Units, which includes the full exercise by the underwriters of their over-allotment option in the amount of 6,000,000 Units, at $10.00 per Unit, generating gross proceeds of $460,000,000. The securities sold in the offering were registered under the Securities Act on registration statement on Form S-1 (No. 333-290126). The SEC declared the registration statement effective on September 29, 2025.

Simultaneously with the closing of the Initial Public Offering, we consummated the sale of 900,000 Private Placement Units, at a price of $10.00 per Private Placement Unit, in a private placement to the Sponsor, generating gross proceeds of $9,000,000.

Of the gross proceeds received from the Initial Public Offering and the Private Placement, an aggregate of $460,000,000 was placed in the Trust Account. The proceeds held in the Trust Account may be invested by the trustee only in U.S. government securities with a maturity of 185 days or less or in money market funds investing solely in U.S. government treasury obligations and meeting certain conditions under Rule 2a-7 under the Investment Company Act. The specific investments in our Trust Account may change from time to time.

Transaction costs amounted to $23,835,700, consisting of $7,000,000 of cash underwriting fee (net of $1,000,000 underwriters’ reimbursement), $16,100,000 of deferred underwriting fee, and $735,700 of other offering costs.

Item 3. Defaults Upon Senior Securities

None

Item 4. Mine Safety Disclosures

None

Item 5. Other Information

None

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Item 6. Exhibits

The following exhibits are filed as part of, or incorporated by reference into, this Quarterly Report on Form 10-Q.

No.		Description of Exhibit
31.1*		Certification of Principal Executive Officer Pursuant to Securities Exchange Act Rules 13a-14(a), as adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2*		Certification of Principal Financial Officer Pursuant to Securities Exchange Act Rules 13a-14(a), as adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1*		Certification of Principal Executive Officer Pursuant to 18 U.S.C. Section 1350, as adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2*		Certification of Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS*		XBRL Instance Document
101.SCH*		XBRL Taxonomy Extension Schema Document
101.CAL*		XBRL Taxonomy Extension Calculation Link base Document
101.DEF*		XBRL Taxonomy Extension Definition link base Document
101.LAB*		XBRL Taxonomy Extension Labels linkable Document
101.PRE*		XBRL Taxonomy Extension Presentation Linkbase Document

* Filed herewith (or furnished herewith in the case of exhibits 32.1 and 32.2).

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SIGNATURES

In accordance with the requirements of the Exchange Act, the registrant caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

				BAIN CAPITAL GSS INVESTMENT CORP.
Date: November 14, 2025				By:		/s/ Angelo Rufino
				Name:		Angelo Rufino
				Title:		Chief Executive Officer
						(Principal Executive Officer)
Date: November 14, 2025				By:		/s/ Patrick Dury
				Name:		Patrick Dury
				Title:		Chief Financial Officer
						(Principal Financial Officer and Principal Accounting Officer)

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FAQ

What did Bain Capital GSS (BCSS) raise in its SPAC IPO?

46,000,000 units at $10.00 per unit, with $460,000,000 placed in a trust account.

How much was raised via the BCSS private placement?

BCSS sold 900,000 private placement units for $9,000,000 on October 1, 2025.

What are BCSS’s warrant terms from the IPO units?

Each unit has one‑fifth of a warrant; each whole warrant is exercisable for one Class A share at $11.50.

How many BCSS shares are outstanding?

As of November 13, 2025, there were 46,900,000 Class A and 11,500,000 Class B shares outstanding.

What underwriting fees are associated with the BCSS IPO?

Cash underwriting fees totaled $7,000,000 (net of reimbursement) and deferred commissions are $16,100,000.

What was BCSS’s net loss for the quarter?

Net loss was $20,600 for the three months ended September 30, 2025.

Do BCSS public shareholders have redemption rights?

Yes. Public shareholders may redeem their Class A shares in connection with the business combination per the stated terms.