Sean D. Keohane
CIK: 0001435737
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (39 total)
- Sep 30, 2026CBT
CABOT CORP
Award(A)DirectPhantom Stock Units
346 shares at avg. $76.91- - Sep 11, 2026CBT
CABOT CORP
Award(A)DirectPhantom Stock Units
284 shares at avg. $79.68- - Aug 24, 2026CBT
CABOT CORP
Exercise(M)Direct2.8K shares at avg. $50.00$139K - Aug 24, 2026CBT
CABOT CORP
Sale(S)Direct2.8K shares at avg. $85.50$238K - Aug 7, 2026CBT
CABOT CORP
Sale(S)Direct91.9K shares at avg. $86.41$7.9M - Aug 7, 2026CBT
CABOT CORP
Exercise(M)Direct91.9K shares at avg. $62.24$5.7M - Jun 30, 2026CBT
CABOT CORP
Award(A)DirectPhantom Stock Units
84 shares at avg. $90.82- - Jun 12, 2026CBT
CABOT CORP
Award(A)DirectPhantom Stock Units
256 shares at avg. $87.65- - May 6, 2026CC
Chemours Co
Award(A)Direct7.2K shares- - Mar 13, 2026CBT
CABOT CORP
Award(A)DirectPhantom Stock Units
306 shares at avg. $69.49- - Dec 31, 2025CBT
CABOT CORP
Award(A)DirectPhantom Stock Units
2.6K shares at avg. $66.28- - Dec 12, 2025CBT
CABOT CORP
Award(A)DirectPhantom Stock Units
292 shares at avg. $68.34- - Nov 19, 2025CBT
CABOT CORP
Award(A)Direct32.6K shares- - Nov 19, 2025CBT
CABOT CORP
Award(A)Direct30.9K shares- - Nov 19, 2025CBT
CABOT CORP
Tax Payment(F)Direct10.3K shares at avg. $59.76$618K - Nov 11, 2025CBT
CABOT CORP
Tax Payment(F)Direct10.6K shares at avg. $61.41$651K - Sep 30, 2025CBT
CABOT CORP
Award(A)DirectPhantom Stock Units
334 shares at avg. $76.05- - Sep 11, 2025CBT
CABOT CORP
Award(A)DirectPhantom Stock Units
242 shares at avg. $81.47- - Aug 14, 2025CBT
CABOT CORP
Sale(S)Direct2.4K shares at avg. $79.63$189K - Aug 14, 2025CBT
CABOT CORP
Sale(S)Direct24.1K shares at avg. $79.25$1.9M - Aug 14, 2025CBT
CABOT CORP
Exercise(M)Direct26.5K shares at avg. $49.26$1.3M - Aug 14, 2025CBT
CABOT CORP
Sale(S)Direct7.7K shares at avg. $79.62$611K - Aug 14, 2025CBT
CABOT CORP
Sale(S)Direct80.3K shares at avg. $79.24$6.4M - Aug 14, 2025CBT
CABOT CORP
Exercise(M)Direct88K shares at avg. $50.46$4.4M - Jun 30, 2025CBT
CABOT CORP
Award(A)DirectPhantom Stock Units
267 shares at avg. $75.00-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 30, 2026 |  CBT CABOT CORP | Award(A) Phantom Stock Units | 346 | $76.91 | - | Direct |
| Sep 11, 2026 | CBT CABOT CORP | Award(A) Phantom Stock Units | 284 | $79.68 | - | Direct |
| Aug 24, 2026 | CBT CABOT CORP | Exercise(M) | 2,779 | $50.00 | $138,950 | Direct |
| Aug 24, 2026 | CBT CABOT CORP | Sale(S) | 2,779 | $85.50 | $237,605 | Direct |
| Aug 7, 2026 | CBT CABOT CORP | Sale(S) | 91,923 | $86.41 | $7,942,634 | Direct |
| Aug 7, 2026 | CBT CABOT CORP | Exercise(M) | 91,923 | $62.24 | $5,721,288 | Direct |
| Jun 30, 2026 | CBT CABOT CORP | Award(A) Phantom Stock Units | 84 | $90.82 | - | Direct |
| Jun 12, 2026 | CBT CABOT CORP | Award(A) Phantom Stock Units | 256 | $87.65 | - | Direct |
| May 6, 2026 |  CC Chemours Co | Award(A) | 7,182 | - | $0 | Direct |
| Mar 13, 2026 | CBT CABOT CORP | Award(A) Phantom Stock Units | 306 | $69.49 | - | Direct |
| Dec 31, 2025 | CBT CABOT CORP | Award(A) Phantom Stock Units | 2,563 | $66.28 | - | Direct |
| Dec 12, 2025 | CBT CABOT CORP | Award(A) Phantom Stock Units | 292 | $68.34 | - | Direct |
| Nov 19, 2025 | CBT CABOT CORP | Award(A) | 32,630 | - | - | Direct |
| Nov 19, 2025 | CBT CABOT CORP | Award(A) | 30,932 | - | - | Direct |
| Nov 19, 2025 | CBT CABOT CORP | Tax Payment(F) | 10,338 | $59.76 | $617,799 | Direct |
| Nov 11, 2025 | CBT CABOT CORP | Tax Payment(F) | 10,608 | $61.41 | $651,437 | Direct |
| Sep 30, 2025 | CBT CABOT CORP | Award(A) Phantom Stock Units | 334 | $76.05 | - | Direct |
| Sep 11, 2025 | CBT CABOT CORP | Award(A) Phantom Stock Units | 242 | $81.47 | - | Direct |
| Aug 14, 2025 | CBT CABOT CORP | Sale(S) | 2,369 | $79.63 | $188,634 | Direct |
| Aug 14, 2025 | CBT CABOT CORP | Sale(S) | 24,086 | $79.25 | $1,908,784 | Direct |
| Aug 14, 2025 | CBT CABOT CORP | Exercise(M) | 26,455 | $49.26 | $1,303,173 | Direct |
| Aug 14, 2025 | CBT CABOT CORP | Sale(S) | 7,677 | $79.62 | $611,226 | Direct |
| Aug 14, 2025 | CBT CABOT CORP | Sale(S) | 80,304 | $79.24 | $6,363,450 | Direct |
| Aug 14, 2025 | CBT CABOT CORP | Exercise(M) | 87,981 | $50.46 | $4,439,521 | Direct |
| Jun 30, 2025 | CBT CABOT CORP | Award(A) Phantom Stock Units | 267 | $75.00 | - | Direct |
1-25 of 39 transactions
About Keohane Sean D
Keohane Sean D (SEC CIK 0001435737) files insider reports with the SEC as President and CEO of CABOT CORP (CBT) and Director of Chemours Co (CC).
Signal8 holds 26 ownership filings by Keohane Sean D, all Form 4s, filed between Sep 4, 2024 and Oct 1, 2026. Those filings report 39 transactions, from Sep 3, 2024 to Sep 30, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Keohane Sean D's filings is in BOSTON, MA.
Recent filings by Keohane Sean D
- Sep 30, 2026: Grant or award of CBT derivative securities (Form 4, code A).
- Sep 11, 2026: Grant or award of CBT derivative securities (Form 4, code A).
- Aug 24, 2026: Option exercise of CBT shares (Form 4, code M).
- Aug 24, 2026: Open-market sale of CBT shares (Form 4, code S).
- Aug 7, 2026: Open-market sale of CBT shares (Form 4, code S).
Other insiders filing for CABOT CORP (CBT)
- Delahunt Steven J, Interim CFO
- Masterson William F III, Senior Vice President
- McLaughlin Erica, Executive Vice President, CFO
- Kalita Karen A, SVP and General Counsel
- Nathoo Raffiq, Director
- Dumont Lisa M, VP, Controller & CAO