X0609 4 2026-06-15 0001389545 Stablecoin Development Corp SDEV 0002091727 Kazley Michael John false 1111 LINCOLN ROAD, SUITE 500 MIAMI BEACH FL 33139 1 1 1 Chief Executive Officer 0 Common Stock 2026-06-15 4 X 0 11332020 0.0024 A 22693236 I By R01 Entities Common Stock 2026-06-15 4 S 0 24720 1.09 D 22668516 I By R01 Entities Pre-Funded Warrants (Right to Buy) 0.0024 2026-06-15 4 X 0 11332020 0 A 2026-01-01 Common Stock 11332020 0 I By R01 Entities On June 16, 2026, the Reporting Person exercised a pre-funded warrant to purchase 11,332,020 shares of common stock for $0.002385 per share. The Reporting Person paid the exercise price on a cashless basis, resulting in the withholding of 24,720 of the warrant shares to pay the exercise price and issuing to the Reporting Person the remaining 11,307,300 shares. The reported securities may also be deemed to be beneficially owned by R01 Fund LP ("R01 LP"), R01 Capital LLC ("R01 Capital") and R01 Capital Manager LLC ("R01 Capital Manager" and together with R01 LP, R01 Capital and the Reporting Person, the "R01 Entities"), each of which or whom disclaim beneficial ownership of these shares, except to the extent of its or his pecuniary interest in such shares, if any. R01 Capital is the general partner of R01 LP. R01 Capital Manager is the investment manager for R01 Capital. The Reporting Person is the managing member of R01 Capital Manager. /s/ Michael Kazley 2026-06-17