Bain Capital GSS Investment Sponsor LLC - 18 Dec 2025 Form 4 Insider Report for Bain Capital GSS Investment Corp. (BCSS)

Role
10%+ Owner
Signature
/s/ Angelo Rufino, Authorized Signatory of Bain Capital GSS Investment Sponsor LLC
Issuer symbol
BCSS
Transactions as of
18 Dec 2025
Net transactions value
$0
Form type
4
Filing time
22 Dec 2025, 17:07:57 UTC
Previous filing
01 Oct 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Bain Capital GSS Investment Sponsor LLC 10%+ Owner 200 CLARENDON STREET, BOSTON /s/ Angelo Rufino, Authorized Signatory of Bain Capital GSS Investment Sponsor LLC 22 Dec 2025 0002083643

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction BCSS Class B ordinary shares, par value $0.0001 Sale -30,000 -0.26% 11,440,000 18 Dec 2025 Class A ordinary shares, par value $0.0001 per share 30,000 Direct F1, F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Pursuant to the Issuer's amended and restated memorandum and articles of association, the Class B ordinary shares have no expiration date and will automatically convert into Class A ordinary shares at the time of the Issuer's initial business combination on a one-for-one basis subject to adjustment pursuant to certain anti-dilution rights.
F2 This Form 4 is being filed by Bain Capital GGS Investment Sponsor LLC (the "Sponsor"). The Sponsor is controlled by its controlling members. As a result, each of the Sponsor and its controlling members may be deemed to have beneficial ownership of the Class B ordinary shares held by the Sponsor.
F3 The reporting person under this Form 4 disclaims beneficial ownership of the Class B ordinary shares reported herein except to the extent of its pecuniary interest therein and the filing of this Form 4 shall not be construed as an admission that the reporting person is the beneficial owner of any Class B ordinary shares covered by this Form 4.