If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).




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SCHEDULE 13D




Comment for Type of Reporting Person:
Non-U.S. Foundation This Amendment No. 2 to Schedule 13D (this "Amendment") amends and supplements the Schedule 13D filed with the Securities and Exchange Commission on May 27, 2026, as amended by Amendment No. 1 filed on July 22, 2026 (as so amended, the "Schedule 13D"), by Sky Frontier Foundation (the "Reporting Person"), relating to the common stock, $0.01 par value per share (the "Common Stock"), of Stablecoin Development Corp (the "Issuer"). Capitalized terms used but not defined in this Amendment have the meanings given to them in the Schedule 13D. Except as expressly amended and supplemented by this Amendment, the Schedule 13D remains in full force and effect. This Amendment is being filed to report a change in the Reporting Person's beneficial ownership resulting from the second tranche of the Warrant becoming exercisable within 60 days. As of August 17, 2026, an aggregate of 10,000,000 shares of Common Stock underlying the first and second tranches of the Warrant are exercisable or will become exercisable within 60 days. Because the Warrant limits the Reporting Person's beneficial ownership to 9.99% of the outstanding Common Stock after giving effect to an exercise, the Reporting Person may be deemed to beneficially own 5,617,689 shares of Common Stock, representing approximately 9.99% of the outstanding Common Stock, based on 50,615,437 shares of Common Stock outstanding as of July 27, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q filed on July 30, 2026. The Reporting Person has not exercised any portion of the Warrant.


SCHEDULE 13D


 
Sky Frontier Foundation
 
Signature:/s/ David Garcia
Name/Title:David Garcia, Director
Date:08/21/2026