Jason Gardner Reports 11.51% Stake in Marqeta, Inc. Following Reverse Stock Split

Jason Gardner, the founder of Marqeta, Inc., filed a Schedule 13G/A on July 17, 2026, reporting a beneficial ownership of 11,999,943 shares of Class A Common Stock, representing 11.51% of the company. This filing reflects the impact of a 1-for-4 reverse stock split that became effective on June 30, 2026. The reported holdings include 3,556,343 shares of Class A Common Stock and various tranches of Class B Common Stock held through the Gardner 2008 Living Trust and two 2025 GRATs. Additionally, the total includes 609,631 shares of Class B Common Stock subject to options exercisable within 60 days. Mr. Gardner shares voting and investment power over the majority of these shares with his spouse or through trust structures. While the previous ownership percentage was recorded as 0.0 in the provided metadata, this amendment clarifies his significant continued stake in the company following the capital restructuring event. The ownership calculation assumes the conversion of his Class B shares into Class A shares.