OSCR 8-K — Smart Summary

Oscar Health, Inc. issued a press release on April 21, 2026 announcing upcoming changes to its Board of Directors leadership structure. The company also reaffirmed its full year 2026 financial guidance originally provided on February 10, 2026, in connection with its participation in the Medicarians 2026 conference.

• Oscar Health reaffirmed its full year 2026 guidance as originally provided in its Q4 and full year 2025 financial results press release dated February 10, 2026.
• The guidance reaffirmation was made in advance of the company's participation in the Medicarians 2026 conference on April 21, 2026.
• The company announced upcoming changes to its Board of Directors leadership structure via a press release dated April 21, 2026 (Exhibit 99.1).
• Oscar Health expects to release Q1 2026 financial results before market open on Wednesday, May 6, 2026.
• A conference call to review Q1 2026 results is scheduled to begin at 8:00 AM ET on May 6, 2026.
• The company is incorporated in Delaware, trades on the NYSE under ticker symbol OSCR, and is headquartered at 75 Varick Street, 5th Floor, New York, New York 10013.
• The Class A Common Stock carries a par value of $0.00001 per share.
• No specific financial figures, dollar amounts, or named board leadership changes are detailed in the available filing text, as the full exhibit content was not included.