144 0002062781 XXXXXXXX LIVE 0001673743 Hinge Health, Inc. 001-42657 455 Market Street, Suite 700 San Francisco CA 94105 4157262206 GABRIEL MECKLENBURG Director Exec. Chairman & Co-Founder Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

200000 20580000.00 62468721 10/12/2026 NYSE Common 05/21/2025 Restricted Stock Units Issuer N 200000 05/21/2025 N/A N 10b5-1 Sales for GABRIEL MECKLENBURG

455 Market Street, Suite 700 San Francisco CA 94105

Common 09/14/2026 150000 13982805.00 10b5-1 Sales for GABRIEL MECKLENBURG

455 Market Street, Suite 700 San Francisco CA 94105

Common 09/11/2026 250000 22242075.00 Sales that were executed on October 12, 2026 are being reported on this Form 144 filed on October 13, 2026 given the EDGAR system was not accepting filings on October 12, 2026 in observance of the federal holiday. 10/12/2026 06/12/2026 /s/ Gabriel Mecklenburg