Sandra M. Buchanan - 31 May 2025 Form 4 Insider Report for GCM Grosvenor Inc. (GCMG)

Reporting relationship: Chief HR Officer
Issuer ticker: GCMG
Reported as of: 31 May 2025
Net transaction value: -$169,075
SEC form: 4
Accepted by SEC: 03 Jun 2025, 16:24:28 UTC
Prior SEC filing: 18 Apr 2025
Next SEC filing: 20 Jun 2025
Source filing: View source filing
Reporting owner signature: /s/ Burke Montgomery, Attorney-in-Fact

Key filing fact

Sandra M. Buchanan filed Form 4 for GCM Grosvenor Inc. (GCMG) on 03 Jun 2025.

Key facts

This page summarizes Sandra M. Buchanan's Form 4 filing for GCM Grosvenor Inc. (GCMG).
5 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 03 Jun 2025, 16:24.

Change

Previous filing in this sequence was filed on 18 Apr 2025.
Current net transaction value: -$169,075.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001831816 Primary reporting owner

Buchanan Sandra M

Relationship: Chief HR Officer
Address: C/O GCM GROSVENOR INC., 900 NORTH MICHIGAN AVENUE, SUITE 1100, CHICAGO
Signature: /s/ Burke Montgomery, Attorney-in-Fact
Signature date: 03 Jun 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

GCMG transaction

Class A Common Stock

Options Exercise

Transaction value
Shares: +13,333
Change %: +39%
Price
Shares after: 47,835
Date: 31 May 2025
Ownership: Direct
Footnotes: F1, F2

GCMG transaction

Class A Common Stock

Options Exercise

Transaction value
Shares: +12,929
Change %: +27%
Price
Shares after: 60,764
Date: 31 May 2025
Ownership: Direct
Footnotes: F2, F3

GCMG transaction

Class A Common Stock

Tax liability

Transaction value: $169,075
Shares: -13,408
Change %: -22%
Price: $12.61
Shares after: 47,356
Date: 31 May 2025
Ownership: Direct
Footnotes: F4

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

GCMG transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value: $0
Shares: -13,333
Change %: -50%
Price: $0.000000
Shares after: 13,334
Date: 31 May 2025
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 13,333
Exercise price
Footnotes: F1, F2

GCMG transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value: $0
Shares: -12,929
Change %: -33%
Price: $0.000000
Shares after: 25,859
Date: 31 May 2025
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 12,929
Exercise price
Footnotes: F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Represents restricted stock units ("RSUs") that were granted under the Issuer's 2020 Incentive Award Plan on March 1, 2023. 13,333 RSUs vested on May 31, 2024, 13,333 RSUs vested on May 31, 2025 and 13,334 will vest on May 31, 2026, subject to the Reporting Person's continued service through the vesting date. 13,333 shares of Class A Common Stock of the Issuer were delivered to the Reporting Person in settlement of 13,333 vested RSUs on May 31, 2025.

Footnote F2

Each RSU represents the contingent right to receive one share of Class A Common Stock of the Issuer.

Footnote F3

Represents RSUs that were granted under the Issuer's Amended and Restated 2020 Incentive Award Plan on March 1, 2024. 12,929 RSUs vested on May 31, 2025, 12,929 RSUs will vest on May 31, 2026 and 12,930 RSUs will vest on May 31, 2027, subject to the Reporting Person's continued service through the applicable vesting date. 12,929 shares of Class A Common Stock of the Issuer were delivered to the Reporting Person in settlement of 12,929 vested RSUs on May 31, 2025.

Footnote F4

Represents shares of Class A Common Stock that have been withheld by the Issuer to satisfy tax withholding obligations in connection with the net settlement of RSUs that vested on May 31, 2025. The shares withheld represent a reduction of shares issued to the Reporting Person upon settlement of vested RSUs and do not constitute any open-market sale.