# EDGAR Filing Document

**Accession Number:** 0002064355
**File Stem:** 0001193125-25-325746
**Filing Date:** 2025-12
**Character Count:** 6132
**Document Hash:** fa10517ce3a775eb2eae9e8f8d0fb4be
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-325746.hdr.sgml**: 20251219

**ACCESSION NUMBER**: 0001193125-25-325746

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 13

**CONFORMED PERIOD OF REPORT**: 20251218

**ITEM INFORMATION**: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20251219

**DATE AS OF CHANGE**: 20251219

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Bain Capital GSS Investment Corp.
- **CENTRAL INDEX KEY:** 0002064355
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 000000000
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42874
- **FILM NUMBER:** 251585015

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 121 SOUTH CHURCH STREET
- **STREET 2:** UGLAND HOUSE
- **CITY:** GEORGE TOWN
- **PROVINCE COUNTRY:** E9
- **ZIP:** KY1-1104
- **BUSINESS PHONE:** 6175162000

**MAIL ADDRESS:**
- **STREET 1:** 200 CLARENDON STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02116

?xml version='1.0' encoding='ASCII'? 8-K

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, DC 20549

### FORM 8-K

#### CURRENT REPORT

#### Pursuant to Section 13 or 15(d)

#### of the Securities Exchange Act of 1934

#### Date of Report (Date of earliest event reported):

#### December 19, 2025 (December 18, 2025)

## Bain Capital GSS Investment Corp.

#### (Exact Name of Registrant as Specified in its Charter)

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| | | |
|:---|:---|:---|
| **Cayman Islands** | **001-42874** | **98-1853296** |
| **(State or other jurisdiction**<br>**of incorporation)** | **(Commission**<br>**File Number)** | **(I.R.S. Employer**<br>**Identification No.)** |

---

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| | |
|:---|:---|
| **200 Clarendon Street**<br>**Boston, Massachusetts** | **02116** |
| **(Address of Principal Executive Offices)** | **(Zip Code)** |

---

#### Registrant's telephone number, including area code:

#### +1 (617) 516-2000

#### Not Applicable

#### (Former name or former address, if changed since last report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

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

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

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

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

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

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| | | |
|:---|:---|:---|
| **Title of each class** | **Trading**<br>**Symbol(s)** | **Name of each exchange**<br>**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 |

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

Emerging growth company ☒

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

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| | |
|:---|:---|
| **Item 5.02** | **Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensation Arrangements of Certain Officers.** |

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On December 18, 2025, the board of directors (the "Board") of Bain Capital GSS Investment Corp. (the "Company") appointed Michael E. Purves to the Board to serve as an independent director of the Board, effective immediately. Mr. Purves will also serve on the Company's Audit Committee, Compensation Committee and Nominating Committee of the Board.

Mr. Purves, 61, is the Chief Executive Officer of Tallbacken Capital Advisors, LLC, which he has managed and operated since 2019. Mr. Purves has over 27 years of financial services experience and spent the first 12 years of his career in investment banking. Mr. Purves received a BA from Columbia University and an MBA from the Wharton School of the University of Pennsylvania.

Mr. Purves owns 30,000 Class B ordinary shares of the Company.

There is no arrangement or understanding between Mr. Purves and any other person pursuant to which Mr. Purves was selected as a director. The Board has determined that Mr. Purves is independent and has no material direct or indirect interest in a related party transaction, which requires disclosure pursuant to Rule 404(a) of Regulation S-K.

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| | |
|:---|:---|
| **Item 9.01.** | **Financial Statements and Exhibits.** |

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(d) Exhibits

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| | |
|:---|:---|
| **Exhibit No.** | **Description** |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) |

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

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| | | |
|:---|:---|:---|
| Dated: December 19, 2025 | **BAIN CAPITAL GSS INVESTMENT CORP** | **BAIN CAPITAL GSS INVESTMENT CORP** |
|  | By: | /s/ Patrick Dury |
|  | Name: | Patrick Dury |
|  | Title: | Chief Financial Officer |

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