Seer CFO David Horn to Step Down; Charles Endweiss Named Successor Effective Oct. 1, 2026

Seer Inc. (SEER) said Monday that Chief Financial Officer David R. Horn will hand over his duties to Charles Endweiss, effective October 1, 2026. Horn's departure follows a planned transition in the CFO role at the proteomics company. The announcement, made on September 21, 2026, did not disclose the reasons for Horn's exit or details of the succession process. Endweiss's appointment takes effect at the start of the fourth quarter. Seer did not provide additional financial terms or guidance in connection with the transition. The company did not say whether Horn will remain in an advisory capacity.