Signing Day Sports, BlockchAIn provide update on ticker symbol transition

Signing Day Sports (SGN) and BlockchAIn Digital Infrastructure provided an update regarding their expected ticker symbol transition and common stock trading schedule in connection with their previously announced business combination, which was approved by the Company’s stockholders on March 13, 2026. Upon the closing of the previously announced business combination, expected to occur later today, Signing Day Sports and BlockchAIn LLC will become operating subsidiaries of BlockchAIn Inc. Signing Day Sports common stock is expected to continue trading on the NYSE American under the ticker symbol “SGN” through the close of market on March 16, 2026. BlockchAIn Inc. common stock is anticipated to begin trading on the NYSE American under the ticker symbol “AIB” on March 17, 2026 at 9:30 a.m. EDT, subject to closing of the business combination. The new CUSIP number for BlockchAIn Inc.’s common stock will be 093919108.