Marqeta, Inc.

(c) On September 10, 2025, Rahul Shah, our Chief Product and Engineering Officer, adopted a “Rule 10b5-1 trading arrangement” as defined in Regulation S-K Item 408 providing for the sale from time to time of an aggregate of up to 629,815 shares of our Class A Common Stock. The actual number of shares subject to the Rule 10b5-1 trading arrangement is expected to be different due to our withholding of certain shares to satisfy tax withholding obligations in connection with the vesting of restricted stock units. The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the trading arrangement is until September 30, 2026, or earlier if all transactions under the trading arrangement are completed, but in no case earlier than one year, or later than two years, from September 10, 2025.

On September 11, 2025, Martha Cummings, a member of ourboard of directors, adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of an aggregate of up to 69,366 shares of our Class A Common Stock. The actual number of shares subject to the Rule 10b5-1 trading arrangement is expected to be different due to our withholding of certain shares to satisfy tax withholding obligations in connection with the vesting of restricted stock units. The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the trading arrangement is until September 30, 2026, or earlier if all transactions under the trading arrangement are completed, but in no case earlier than one year, or later than two years, from September 11, 2025.

On September 12, 2025, Najuma Atkinson, a member of ourboard of directors, adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of an aggregate of up to 60,148 shares of our Class A Common Stock. The actual number of shares subject to the Rule 10b5-1 trading arrangement is expected to be different due to our withholding of certain shares to satisfy tax withholding obligations in connection with the vesting of restricted stock units. The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the trading arrangement is until October 8, 2026, or earlier if all transactions under the trading arrangement are completed, but in no case earlier than one year, or later than two years, from September 12, 2025.

On September 12, 2025, The Gardner 2008 Living Trust (the “Gardner Trust”) along with two trusts established for the benefit of the children of Jason Gardner (the “Children’s Trusts”), adopted an umbrella Rule 10b5-1 trading arrangement providing for the sale from time to time of an aggregate of up to 3,321,000 shares of our Class A Common Stock. The shares held by the Gardner Trust may be deemed to be beneficially owned by Jason Gardner, a member of ourboard of directors. Jason Gardner disclaims beneficial ownership of the shares held by the Children’s Trusts. The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the trading arrangement is until November 27, 2026, or earlier if all transactions under the trading arrangement are completed, but in no case earlier than one year, or later than two years, from September 12, 2025.

No other officers, as defined in Rule 16a-1(f), or directors adopted orterminated a Rule 10b5-1 trading arrangement or a “non-Rule 10b5-1 trading arrangement,” as defined in Item 408 of Regulation S-K, during our last fiscal quarter.