XYZBlock, Inc.

During the quarterly period ended September 30, 2025, the following officers, as defined in Rule 16a-1(f), adopted a “Rule 10b5-1 trading arrangement” as defined in Regulation S-K Item 408, that are each intended to satisfy the affirmative defense in Rule 10b5-1(c), as follows: Name and Title Action Date of Adoption or Termination Expiration Date Maximum Aggregate Number of Class A Shares to be Sold Owen Britton Jennings Business Lead Adoption September 2, 2025 March 2, 2027, or earlier if all transactions are completed 109,146* * In addition to these shares, Mr. Jennings’ Rule 10b5-1 trading arrangement also contemplates the sale of shares acquired through our Employee Stock Purchase Plan, which number cannot be determined at this time.

On May 14, 2024, Ajmere Dale, our Chief Accounting Officer, adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of an aggregate of up to 6,000 shares of our Class A common stock. The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the trading arrangement is until August 13, 2025, or earlier if all transactions under the trading arrangement are completed.

On March 1, 2024, Chrysty Esperanza, our Chief Legal Officer, adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of an aggregate of up to 36,790 shares of our Class A common stock. The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the trading arrangement is until May 31, 2025, or earlier if all transactions under the trading arrangement are completed.

On November 29, 2023, Brian Grassadonia, our Chief Executive Officer, Cash App, adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of an aggregate of up to 652,282 shares of our Class A common stock, which includes the exercise of up to 412,122 options and the corresponding sale of enough of the resulting 412,122 shares of Class A common stock required to cover the exercise price, withholding taxes, commissions and fees related to exercising the aforementioned options. The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the trading arrangement is until March 30, 2025, or earlier if all transactions under the trading arrangement are completed.

On August 17, 2023, Amrita Ahuja, our Chief Operating Officer and Chief Financial Officer, adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of an aggregate of up to 178,854 shares of our Class A common stock. The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the trading arrangement is until November 22, 2024, or earlier if all transactions under the trading arrangement are completed.

On May 18, 2023, Alyssa Henry, Chief Executive Officer of Square, terminated a Rule 10b5-1 trading arrangement providing for the exercise of vested stock options and the associated sale from time to time of an aggregate of up to 339,507 shares of our Class A common stock. The trading arrangement was intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the trading arrangement was until May 30, 2024, or earlier if all transactions under the trading arrangement are completed.

On May 11, 2023, Ajmere Dale, our Chief Accounting Officer, adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of an aggregate of up to 6,000 shares of our Class A common stock. The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the trading arrangement is until August 9, 2024, or earlier if all transactions under the trading arrangement are completed.