As previously announced, Oscar Health, Inc. (the "Company" or "Oscar") will host its 2026 Investor Day on Wednesday, September 16, 2026, beginning at 9:00 a.m. Eastern Time. At the event, the Company will discuss its strategy and long-term financial targets.

The Company will also discuss its financial performance and outlook, including the following improvements to its full year 2026 guidance:
•Medical Loss Ratio between 81.0% and 82.0% (an improvement of 50 basis points from its previous expectation of 81.5% to 82.5%); and
•Earnings from Operations between $600 million and $800 million (an increase of $100 million from its previous expectation of $500 million to $700 million).

In addition, the Company will reaffirm the following full year 2026 guidance:
•Total Revenue between $18.7 billion and $19.0 billion; and
•SG&A Expense Ratio between 15.6% and 16.1%.

A live webcast of the presentation and associated materials will be available on Oscar's investor relations website (ir.oscarhealth.com). The webcast will be archived on Oscar’s investor relations website following September 16, 2026 for a period of 90 days.