# clm_BBE435FAECC8

subject: Thermo Fisher Scientific Inc. (/record/thermo-fisher-scientific.md)  
predicate: cfo  
value: Stephen Williamson  
valid_from: undated  
valid_to: 2026-03-31  
published: 2025-07-23  
recorded: 2026-11-08  
confidence: 0.95  
status: superseded  
assertable: true  
superseded_by: null  
last_updated: 2026-11-13  
cite: AsOf. "Thermo Fisher Scientific Inc. cfo: Stephen Williamson", undated. Claim clm_BBE435FAECC8, https://asof.is/claim/clm_BBE435FAECC8, accessed 2026-11-13. Source: https://www.sec.gov/Archives/edgar/data/97745/000009774526000018/tmo-20251231.htm.  
checked: 2026-11-13 · its source page states the value and the date, as read by an AI model  

> On July 23, 2025, Thermo Fisher Scientific Inc. (the “Company”), announced that Stephen Williamson, Senior Vice President and Chief Financial Officer (CFO) will retire effective March 31, 2026.

What https://www.sec.gov/Archives/edgar/data/97745/000009774525000095/0000097745-25-000095-index.htm says, word for word.

## Sources

- https://www.sec.gov/Archives/edgar/data/97745/000009774526000018/tmo-20251231.htm (primary, SEC EDGAR 10-K, published 2026-02-26)
- https://www.sec.gov/Archives/edgar/data/97745/000009774525000095/0000097745-25-000095-index.htm (primary, SEC EDGAR 8-K Item 5.02, published 2025-07-23)

---

AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.