# Thermo Fisher Scientific Inc. CEO entity: /record/thermo-fisher-scientific.md predicate: ceo page: /record/thermo-fisher-scientific/ceo as_of: 2026-11-10 cite: AsOf. "Thermo Fisher Scientific Inc. ceo: Marc N. Casper", undated. Claim clm_3C7DE643C989, https://asof.is/claim/clm_3C7DE643C989, accessed 2026-11-10. Source: https://www.sec.gov/Archives/edgar/data/97745/000009774526000018/tmo-20251231.htm. As of November 10, 2026, Thermo Fisher Scientific Inc.'s CEO on the AsOf record is Marc N. Casper, undated on the record, from a primary source (sec.gov). 1 claim on Thermo Fisher Scientific Inc.'s CEO, 1 open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted. ## Current CEO What the record asserts on 2026-11-10. - [Thermo Fisher Scientific Inc.](/record/thermo-fisher-scientific.md) | ceo | Marc N. Casper | valid undated to present | conf 0.95 | valid | [clm_3C7DE643C989](/claim/clm_3C7DE643C989.md) sources: https://www.sec.gov/Archives/edgar/data/97745/000009774526000018/tmo-20251231.htm ## Every dated value One claim per line, oldest first. Superseded claims stay visible. - [Thermo Fisher Scientific Inc.](/record/thermo-fisher-scientific.md) | ceo | Marc N. Casper | valid undated to present | conf 0.95 | valid | [clm_3C7DE643C989](/claim/clm_3C7DE643C989.md) sources: https://www.sec.gov/Archives/edgar/data/97745/000009774526000018/tmo-20251231.htm ## Questions this record answers ### What is Thermo Fisher Scientific Inc.'s current CEO? Marc N. Casper, undated on the record, from a primary source (sec.gov). The record asserts this claim as of November 10, 2026 (status valid, confidence 0.95). ## Read on - This page: /record/thermo-fisher-scientific/ceo (markdown: /record/thermo-fisher-scientific/ceo.md) - Entity twin: /record/thermo-fisher-scientific.md ยท timeline: /timelines/thermo-fisher-scientific.md - Every company's CEO: /facts/ceo.md --- AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.