Shuttle Pharmaceutical Holdings, Inc. (NASDAQ:SHPH) ("Shuttle" or the "Company") today announced the closing (the "Closing") of its previously announced merger with United Dogecoin Inc. ("United Dogecoin"), and the confirmation of a purchase order granting the Company the option to purchase up to 3,000 next-generation ElphaPex Scrypt mining rigs ("Mining Rigs") for use in the Company's Dogecoin (DOGE) and Litecoin (LTC) merge-mining operations. As previously reported on Shuttle's Current Report on Form-8-K dated May 7, 2026 (the "Closing 8-K"), filed with the U.S. Securities and Exchange Commission (the "SEC"), the Closing was completed on May 6, 2026.

Effective at Closing, United Dogecoin became a wholly owned subsidiary of Shuttle. The combined company is now positioned to pursue a focused strategy of mining DOGE and LTC and accumulating mined coins on its balance sheet.