SCHEDULE: Ameriprise Financial Boosts GCM Grosvenor Stake to 10.2%

Ameriprise Financial, through its subsidiaries, reported a 10.2% beneficial ownership in GCM Grosvenor, Inc.'s Class A Common Stock as of September 30, 2025.

Summary

• Ameriprise Financial, Inc. and its subsidiaries, Columbia Management Investment Advisers, LLC and Columbia Acorn Fund, reported beneficial ownership in GCM Grosvenor, Inc.'s Class A Common Stock.
• Ameriprise Financial, Inc. beneficially owns 5,423,883 shares, representing 10.2% of GCM Grosvenor's Class A Common Stock.
• Columbia Management Investment Advisers, LLC beneficially owns 5,410,167 shares, also representing 10.2% of the class.
• Columbia Acorn Fund beneficially owns 4,540,494 shares, representing 8.5% of the class.
• The beneficial ownership is primarily held through managed accounts and funds, with Ameriprise Financial, Inc. being the parent holding company of Columbia Management Investment Advisers, LLC.
• This filing is an Amendment No. 7, indicating previous disclosures of ownership by these entities.

Sentiment

Score: 6

Explanation: The filing is a routine disclosure of beneficial ownership by institutional investors. While it indicates significant institutional interest in GCM Grosvenor, Inc., it does not provide new operational or financial performance data to significantly alter sentiment beyond a neutral stance.

Positives

• Significant institutional investment by Ameriprise Financial and its affiliates, potentially signaling confidence in GCM Grosvenor, Inc.
• Increased transparency regarding major shareholders of GCM Grosvenor, Inc.

Negatives

• No direct negatives are presented in this Schedule 13G filing, which is a routine disclosure of ownership.

Risks

• No specific risks related to GCM Grosvenor, Inc.'s operations or financial health are disclosed in this beneficial ownership report.

Future Outlook

This Schedule 13G filing does not contain forward-looking statements or guidance regarding GCM Grosvenor, Inc.'s future performance or operations.

Management Comments

• The filing includes certifications from Michael G. Clarke, Senior Vice President, North America Head of Operations & Investor Services for Ameriprise Financial, Inc. and Columbia Management Investment Advisers, LLC, and Senior Vice President & Chief Financial Officer for Columbia Acorn Fund, affirming that the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of the issuer.

Industry Context

The disclosure of significant institutional ownership by a major financial services company like Ameriprise Financial is a common occurrence in the asset management industry, reflecting portfolio allocation decisions by large investment firms and their managed funds. It provides transparency into the ownership structure of publicly traded companies.

Comparison to Industry Standards

• NA

Stakeholder Impact

• Shareholders: Provides transparency regarding significant institutional holders, which can influence market perception and liquidity.
• Management: Awareness of major institutional investors can influence strategic decisions and investor relations efforts.

Next Steps

• No specific future actions or milestones for GCM Grosvenor, Inc. are mentioned in this beneficial ownership report.

Key Dates

Keywords

GCM Grosvenor, Ameriprise Financial, Columbia Management Investment Advisers, Columbia Acorn Fund, Class A Common Stock, beneficial ownership, institutional investment, Schedule 13G, SEC filing, asset management