Quick Takeaways
- Stephen Williamson has 3 issuer positions tracked on this page.
- Estimated disclosed ownership value: $26,273,471.
- Recent insider filing activity is available below.
- Info
- Insider Ownership
Insider Trading & Ownership of Stephen Williamson
- Location
- Waltham, MA
- Summary
- The estimated net worth of Stephen Williamson is at least $26,273,471 dollars as of 02 Mar 2026. Stephen Williamson is the Retiring Sr. VP and CFO of THERMO FISHER SCIENTIFIC INC. and owns shares of THERMO FISHER SCIENTIFIC INC. (TMO) stock worth about $24.78M. Stephen Williamson is the Director of INTERNATIONAL FLAVORS & FRAGRANCES INC and owns shares of INTERNATIONAL FLAVORS & FRAGRANCES INC (IFF) stock worth about $1.26M. Stephen Williamson is the Director of HONEYWELL INTERNATIONAL INC and owns shares of HONEYWELL INTERNATIONAL INC (HON) stock worth about $234.1K.
- Signature
- /s/ Melodie T. Morin, Attorney-in-Fact for Stephen Williamson
- All Insider Reports
- All Insider Reports
Follow Filing Activity
Follow Stephen Williamson and return when a new Insider Trading filing appears.
This tracks SEC filing changes for this page using existing product update flows.
What Changed
- Largest disclosed position: THERMO FISHER SCIENTIFIC INC. ($24,781,094).
- Past-year value change for that position: .
Why This Matters
- This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
- You can cross-check role, issuer, and filing chronology directly against the SEC source.
Official SEC Source
Filed on Form 4
Insider ownership context is sourced from SEC Forms 3, 4, and 5.
See Original FilingOwnership of Stephen Williamson
| Symbol | Company | Relationship | Holdings Value | Past Year Net Change | Change % | Report Period |
|---|---|---|---|---|---|---|
| TMO | THERMO FISHER SCIENTIFIC INC. | Retiring Sr. VP and CFO | $24,781,094 | 28 Feb 2026 | ||
| IFF | INTERNATIONAL FLAVORS & FRAGRANCES INC | Director | $1,258,251 | 01 Nov 2022 | ||
| HON | HONEYWELL INTERNATIONAL INC | Director | $234,126 | 02 Jan 2026 |
Insider Transactions Reported by Stephen Williamson:
| Sym | Company | Class | Transaction | % | Value $ | * Price $ | Shares | Shares After | Date | Ownership |
|---|
* An asterisk sign (*) next to the price indicates that the price is likely invalid.