Quick Takeaways
- Sean D. Keohane has 2 issuer positions tracked on this page.
- Estimated disclosed ownership value: $29,113,158.
- Recent insider filing activity is available below.
Insider Trading & Ownership of Sean D. Keohane
- Location
- Boston, MA
- Summary
- The estimated net worth of Sean D. Keohane is at least $29,113,158 dollars as of 17 Mar 2026. Sean D. Keohane is the President and CEO, Director of CABOT CORP and owns shares of CABOT CORP (CBT) stock worth about $28.25M. Sean D. Keohane is the Director of Chemours Co and owns shares of Chemours Co (CC) stock worth about $864.2K.
- Signature
- By: Jennifer Lombardi, pursuant to a power of attorney from Sean D. Keohane
- All Insider Reports
- All Insider Reports
Follow Filing Activity
Follow Sean D. Keohane and return when a new Insider Trading filing changes the record on this page.
This uses the existing product follow flow to surface future filing-backed changes without guessing what they mean.
What Changed
- Largest disclosed position: CABOT CORP ($28,248,962).
- Past-year value change for that position: -$9,072,094.
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.
Source Evidence
Filed on Form 4
See Original Filing
Insider ownership context is sourced from SEC Forms 3, 4, and 5.
Ownership of Sean D. Keohane
| Symbol | Company | Relationship | Holdings Value | Past Year Net Change | Change % | Report Period |
|---|---|---|---|---|---|---|
| CBT | CABOT CORP | President and CEO, Director | $28,248,962 | -$9,072,094 | -24% | 13 Mar 2026 |
| CC | Chemours Co | Director | $864,196 | 22 Apr 2025 |
Insider Transactions Reported by Sean D. Keohane:
| 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.