144 0001888381 XXXXXXXX LIVE 0001568651 Oscar Health, Inc. 001-40154 75 VARICK STREET 5th Floor New York NY 10013 646-403-3677 Janet Liang President, Oscar Insurance Common Stock Morgan Stanley Smith Barney LLC

Executive Financial Services 1 New York Plaza, 8th Floor New York NY 10004

6468 88352.88 262157000 03/02/2026 NYSE Common Stock 03/01/2026 Restricted stock units vesting under a registered plan Issuer N 14168 03/01/2026 Services Rendered N Janet Liang

75 Varick Street, 5th Floor New York NY 10013

Common Stock 12/02/2025 7338 121737.42 03/02/2026 08/08/2025 Melissa Curtin, Attorney-in-Fact for Janet Liang