P3 Health Partners Inc.

This proxy statement is furnished in connection with the solicitation by the Board of Directors of P3 Health Partners Inc. of proxies to be voted at our Annual Meeting of Stockholders to be held on Tuesday, June 9, 2026 (the “Annual Meeting”), at 9:00 a.m. Pacific Time, and at any continuation, postponement, or adjournment of the Annual Meeting. The Annual Meeting will be a completely virtual meeting, which will be conducted via live webcast. You will be able to attend the Annual Meeting online and submit your questions during the meeting by visitingwww.virtualshareholdermeeting.com/PIII2026 and entering your 16-digit control number included on your proxy card or on the instructions that accompanied your proxy materials.

Holders of record of outstanding shares of our capital stock, composed of Class A common stock, $0.0001 par value per share, and Class V common stock, $0.0001 par value per share (collectively, the “Common Stock”), as of the close of business on April 10, 2026 (the “Record Date”), will be entitled to notice of and to vote at the Annual Meeting and any continuation, postponement, or adjournment of the Annual Meeting, and will vote together as a single class on all matters presented at the Annual Meeting. Each share of our Class A common stock and each share of our Class V common stock entitle its holders to one vote per share on all matters presented to our stockholders generally.

On April 11, 2025, we effectuated a 1-for-50 reverse stock split of the Company’s issued and outstanding Common Stock (the “Reverse Stock Split”). All share and per share information presented in this Proxy Statement has been retroactively adjusted to reflect the Reverse Stock Split, unless otherwise indicated.

As of the Record Date, there were 3,318,290 shares of Class A common stock and 3,919,124 shares of Class V common stock outstanding and entitled to vote at the Annual Meeting.

This proxy statement and the Company’s Annual Report to Stockholders for the year ended December 31, 2025 (the “2025 Annual Report”) will be released on or about April 30, 2026 to our stockholders on the Record Date.

In this proxy statement, “P3”, “Company”, “we”, “us”, and “our” refer to P3 Health Partners Inc.

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE STOCKHOLDER MEETING TO BE HELD ON TUESDAY, JUNE 9, 2026

This Proxy Statement and our 2025 Annual Report are available at http://www.proxyvote.com/