Coinbase Board Member Marc Andreessen Files Form 144 to Sell $1.4M in Stock

Executive Summary

On September 21, 2026, Coinbase Global, Inc. ($COIN) Board Member Marc L. Andreessen submitted a Form 144 filing signaling the proposed sale of 6,838 shares of Class A Common Stock with an estimated market value of $1,401,790.00. The shares are held indirectly and to be sold through the LAMA Community Trust pursuant to a pre-arranged Rule 10b5-1 trading plan established on June 5, 2026.

Transaction Details

• Issuer: Coinbase Global, Inc. ($COIN)
• Filer: Marc L. Andreessen (Director)
• Filing Date: September 21, 2026
• Broker: Raymond James & Associates, Inc.
• Proposed Volume: 6,838 shares
• Estimated Market Value: $1,401,790.00 (~$205.00 per share)
• Shares Outstanding: 222,803,032 shares of Class A Common Stock (transaction represents <0.01% of outstanding shares)
• Recent Prior Activity: In the preceding three months, the LAMA Community Trust executed a sale of 13,676 Class A shares on September 8, 2026, generating gross proceeds of $2,476,518.91.

Strategic Context & Significance

The proposed sale is evaluated as having Low trading significance for the following reasons:

1. Rule 10b5-1 Trading Plan: The transactions are conducted under a pre-established 10b5-1 trading plan adopted on June 5, 2026, mitigating concerns regarding opportunistic or material non-public information-driven sales.
2. Relative Magnitude: The disposition represents an immaterial fraction (<0.01%) of Coinbase's outstanding shares and a negligible portion of Marc Andreessen's overall equity exposure in Coinbase.
3. Routine Liquidity: The sale follows standard portfolio management patterns common among early venture investors and long-standing directors.