Mark Peters Director Power of Attorney Filing for Oklo Inc.

This is a Form 3 filing with an attached Power of Attorney document for Mark Peters, a director of Oklo Inc. The filing reports that Mark Peters, through The Peters Family Trust, holds 100 shares of Class A Common Stock in Oklo Inc. as of April 10, 2026. The Power of Attorney document appoints four individuals as attorneys-in-fact for Peters: Jacob DeWitte (Co-Founder, CEO, Director), Caroline DeWitte (Co-Founder, COO, Director), Richard Craig Bealmear (CFO), and Vivek Narayanadas (General Counsel and Corporate Secretary). These attorneys are authorized to execute and file SEC forms including Schedules 13D/13G and Forms 3, 4, and 5 on Peters' behalf. The Power of Attorney remains in effect until Peters is no longer required to file these forms or until revoked in writing.