Seer CFO David Horn to Exit October 1, Pursue Private-Sector Role

Seer, Inc. (SEER) announced Monday that President, Chief Financial Officer and Treasurer David Horn will leave the company effective October 1, 2026, to take a role at a private company. The protein-sequencing company disclosed the departure on September 21, 2026, without naming a successor or interim CFO. Horn's exit leaves Seer without its top financial officer as it continues commercial development of its Proteograph product line. Seer did not state whether the CFO duties will be reassigned internally or filled through an external search. Shares of Seer trade on Nasdaq under the ticker SEER.