R01 Fund LP Increases Stake in Stablecoin Development Corp to 47.4% via Warrant Vesting

This Amendment No. 5 to Schedule 13D, filed on May 19, 2026, reports an increase in the beneficial ownership of Stablecoin Development Corp (the "Company") by R01 Fund LP and its affiliates. The filing reflects the vesting of pre-funded warrants to purchase 10,735,994 shares of Common Stock, which represents 20% of the total shares issuable under warrants originally issued on January 16, 2026. Following this event, R01 Fund LP, R01 Capital LLC, and R01 Capital Manager LLC beneficially own 33,429,230 shares, representing approximately 47.4% of the Company's outstanding Common Stock. Michael Kazley, through shared and sole dispositive power, is deemed to beneficially own 37,548,058 shares, or approximately 50.3% of the class. The ownership percentages are calculated based on 27,115,646 shares outstanding as of May 17, 2026, while also accounting for the vesting of warrants held by other investors including Framework Ventures IV L.P. and associated parties. The reporting persons have disclaimed beneficial ownership of shares held by other groups except to the extent of their pecuniary interest.