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person · Reporting owner

Keohane Sean D

Disclosed activity across 2 companies

Tapewire entity
18591
SEC CIK
0001435737

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
CABOT CORPCBT · Entity 4032Director · President and CEOSeptember 30, 2026October 01, 2026
Chemours CoCC · Entity 4420DirectorMay 06, 2026May 08, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

CABOT CORP

Report date September 30, 2026 · Filed October 01, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Phantom Stock UnitsSEC Table II · derivative / convertible securityDirect48,460.8725 Reported balance After 2026-09-30 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2026-09-30 · Grant · Acquired 346.259 · Balance 48,460.8725

F1: 1 for 1

F2: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

Filing footnotes · ownership attribution and instrument terms

F1: 1 for 1

F2: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

Chemours Co

Report date May 06, 2026 · Filed May 08, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect72,555.1777 Reported balance After 2026-05-06 transaction · row 1 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 1 · 2026-05-06 · Grant · Acquired 7,182 · Balance 72,555.1777

F1: Represents stock units that will convert one-for-one to Chemours common stock upon separation from service on the Board.

F2: Includes deferred stock units and dividend equivalent units.

Filing footnotes · ownership attribution and instrument terms

F1: Represents stock units that will convert one-for-one to Chemours common stock upon separation from service on the Board.

F2: Includes deferred stock units and dividend equivalent units.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
September 30, 2026 Filed Oct 1, 2026 23:47 UTC CABOT CORP CBT · Entity 4032 GrantPhantom Stock Units · Derivative 346.259 $76.91 $26,630.78
Disclosure

SEC source: 0001193125-26-410595 · ownership.xml · derivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,460.8725

Underlying: Common Stock · 346.259 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · derivative.exercise_date: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

F2 · derivative.expiration_date: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

Read SEC document
September 11, 2026 Filed Sep 14, 2026 21:00 UTC CABOT CORP CBT · Entity 4032 GrantPhantom Stock Units · Derivative 283.6362 $79.68 $22,600.13
Disclosure

SEC source: 0001193125-26-390728 · ownership.xml · derivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,114.6135

Underlying: Common Stock · 283.6362 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · derivative.exercise_date: Represents dividends paid on phantom stock units acquired under the Corporation's Supplemental 401(k) Plan and are to be settled upon the reporting person's retirement or other termination of employment.

F2 · derivative.expiration_date: Represents dividends paid on phantom stock units acquired under the Corporation's Supplemental 401(k) Plan and are to be settled upon the reporting person's retirement or other termination of employment.

Read SEC document
August 28, 2026 Filed Aug 31, 2026 23:00 UTC CABOT CORP CBT · Entity 4032 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 134,895 $0.00 Strike: $50.00 $0.00
Disclosure

SEC source: 0001193125-26-377202 · ownership.xml · derivative · entry 4

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 134,895 shares

Expires 2028-11-08

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: 137,674 shares were subject to the option. The option vested over a three year period as follows: 30% on November 9, 2019, 30% on November 9, 2020, and 40% on November 9, 2021.

Read SEC document
August 28, 2026 Filed Aug 31, 2026 23:00 UTC CABOT CORP CBT · Entity 4032 SaleCommon Stock 134,895 $85.00 $11,466,075.00
Disclosure

SEC source: 0001193125-26-377202 · ownership.xml · nonDerivative · entry 2

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 404,134

Read SEC document
August 28, 2026 Filed Aug 31, 2026 23:00 UTC CABOT CORP CBT · Entity 4032 Exercise / conversionCommon Stock 134,895 $50.00 $6,744,750.00
Disclosure

SEC source: 0001193125-26-377202 · ownership.xml · nonDerivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 539,029

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
August 24, 2026 Filed Aug 26, 2026 18:42 UTC CABOT CORP CBT · Entity 4032 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 2,779 $0.00 Strike: $50.00 $0.00
Disclosure

SEC source: 0001193125-26-367204 · ownership.xml · derivative · entry 4

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 134,895

Underlying: Common Stock · 2,779 shares

Expires 2028-11-08

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: 137,674 shares were subject to the option. The option vested over a three year period as follows: 30% on November 10, 2018, 30% on November 10, 2019, and 40% on November 10, 2020.

Read SEC document
August 24, 2026 Filed Aug 26, 2026 18:42 UTC CABOT CORP CBT · Entity 4032 SaleCommon Stock 2,779 $85.50 $237,604.50
Disclosure

SEC source: 0001193125-26-367204 · ownership.xml · nonDerivative · entry 2

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 288,873

Read SEC document
August 24, 2026 Filed Aug 26, 2026 18:42 UTC CABOT CORP CBT · Entity 4032 Exercise / conversionCommon Stock 2,779 $50.00 $138,950.00
Disclosure

SEC source: 0001193125-26-367204 · ownership.xml · nonDerivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 291,652

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
August 07, 2026 Filed Aug 11, 2026 22:00 UTC CABOT CORP CBT · Entity 4032 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 91,923 $0.00 Strike: $62.24 $0.00
Disclosure

SEC source: 0001193125-26-345177 · ownership.xml · derivative · entry 4

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 91,923 shares

Expires 2027-11-09

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: 91,923 shares were subject to the option. The option vested over a three year period as follows: 30% on November 10, 2018, 30% on November 10, 2019, and 40% on November 10, 2020.

Read SEC document
August 07, 2026 Filed Aug 11, 2026 22:00 UTC CABOT CORP CBT · Entity 4032 SaleCommon Stock 91,923 $86.41 $7,942,634.39
Disclosure

SEC source: 0001193125-26-345177 · ownership.xml · nonDerivative · entry 2

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 404,134

F1 · price: The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $85.970 to $86.815, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, the Corporation or any security holder of the Corporation, upon request, full information regarding the number of shares sold at each separate price.

Read SEC document
August 07, 2026 Filed Aug 11, 2026 22:00 UTC CABOT CORP CBT · Entity 4032 Exercise / conversionCommon Stock 91,923 $62.24 $5,721,287.52
Disclosure

SEC source: 0001193125-26-345177 · ownership.xml · nonDerivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 496,057

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 30, 2026 Filed Jul 2, 2026 12:56 UTC CABOT CORP CBT · Entity 4032 GrantPhantom Stock Units · Derivative 83.6823 $90.82 $7,600.03
Disclosure

SEC source: 0001193125-26-293538 · ownership.xml · derivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,830.9773

Underlying: Common Stock · 83.6823 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · derivative.exercise_date: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

F2 · derivative.expiration_date: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

Read SEC document
June 12, 2026 Filed Jun 16, 2026 20:30 UTC CABOT CORP CBT · Entity 4032 GrantPhantom Stock Units · Derivative 256.014 $87.65 $22,439.63
Disclosure

SEC source: 0001193125-26-272675 · ownership.xml · derivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,747.2951

Underlying: Common Stock · 256.014 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · derivative.exercise_date: Represents dividends paid on phantom stock units acquired under the Corporation's Supplemental 401(k) Plan and are to be settled upon the reporting person's retirement or other termination of employment.

F2 · derivative.expiration_date: Represents dividends paid on phantom stock units acquired under the Corporation's Supplemental 401(k) Plan and are to be settled upon the reporting person's retirement or other termination of employment.

Read SEC document
May 06, 2026 Filed May 8, 2026 20:15 UTC Chemours Co CC · Entity 4420 GrantCommon Stock 7,182 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-214659 · ownership.xml · nonDerivative · entry 1

Keohane Sean D · CIK 0001435737 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 72,555.1777

F1 · shares: Represents stock units that will convert one-for-one to Chemours common stock upon separation from service on the Board.

F2 · balance_after: Includes deferred stock units and dividend equivalent units.

Read SEC document
March 13, 2026 Filed Mar 17, 2026 21:00 UTC CABOT CORP CBT · Entity 4032 GrantPhantom Stock Units · Derivative 305.563 $69.49 $21,233.57
Disclosure

SEC source: 0001193125-26-111114 · ownership.xml · derivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,491.2811

Underlying: Common Stock · 305.563 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · derivative.exercise_date: Represents dividends paid on phantom stock units acquired under the Corporation's Supplemental 401(k) Plan and are to be settled upon the reporting person's retirement or other termination of employment.

F2 · derivative.expiration_date: Represents dividends paid on phantom stock units acquired under the Corporation's Supplemental 401(k) Plan and are to be settled upon the reporting person's retirement or other termination of employment.

Read SEC document
December 31, 2025 Filed Jan 5, 2026 20:58 UTC CABOT CORP CBT · Entity 4032 GrantPhantom Stock Units · Derivative 2,562.8468 $66.28 $169,865.49
Disclosure

SEC source: 0001193125-26-002337 · ownership.xml · derivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,185.7181

Underlying: Common Stock · 2,562.8468 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · derivative.exercise_date: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

F2 · derivative.expiration_date: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

Read SEC document
December 12, 2025 Filed Dec 16, 2025 22:00 UTC CABOT CORP CBT · Entity 4032 GrantPhantom Stock Units · Derivative 291.9071 $68.34 $19,948.93
Disclosure

SEC source: 0001193125-25-321116 · ownership.xml · derivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,622.8712

Underlying: Common Stock · 291.9071 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · derivative.exercise_date: Represents dividends paid on phantom stock units acquired under the Corporation's Supplemental 401(k) Plan and are to be settled upon the reporting person's retirement or other termination of employment.

F2 · derivative.expiration_date: Represents dividends paid on phantom stock units acquired under the Corporation's Supplemental 401(k) Plan and are to be settled upon the reporting person's retirement or other termination of employment.

Read SEC document
November 19, 2025 Filed Nov 21, 2025 22:00 UTC CABOT CORP CBT · Entity 4032 GrantEmployee Stock Option (Right to Buy) · Derivative 122,114 $0.00 Strike: $59.76 $0.00
Disclosure

SEC source: 0001193125-25-291554 · ownership.xml · derivative · entry 5

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 122,114

Underlying: Common Stock · 122,114 shares

Expires 2035-11-18

F2 · derivative.exercise_date: The option vests over a three year period as follows: 30% on November 19, 2026, 30% on November 19, 2027 and 40% on November 19, 2028.

Read SEC document
November 19, 2025 Filed Nov 21, 2025 22:00 UTC CABOT CORP CBT · Entity 4032 Tax withholdingCommon Stock 10,338 $59.76 $617,798.88
Disclosure

SEC source: 0001193125-25-291554 · ownership.xml · nonDerivative · entry 3

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 404,134

Read SEC document
November 19, 2025 Filed Nov 21, 2025 22:00 UTC CABOT CORP CBT · Entity 4032 GrantCommon Stock 30,932 $0.00 $0.00
Disclosure

SEC source: 0001193125-25-291554 · ownership.xml · nonDerivative · entry 2

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 414,472

F1 · shares: Consists of performance based units earned on the basis of the Corporation's performance in fiscal year 2025, of which 22,630 remain subject to time-based vesting.

Read SEC document
November 19, 2025 Filed Nov 21, 2025 22:00 UTC CABOT CORP CBT · Entity 4032 GrantCommon Stock 32,630 $0.00 $0.00
Disclosure

SEC source: 0001193125-25-291554 · ownership.xml · nonDerivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 383,540

Read SEC document
November 11, 2025 Filed Nov 12, 2025 18:57 UTC CABOT CORP CBT · Entity 4032 Tax withholdingCommon Stock 10,608 $61.41 $651,437.28
Disclosure

SEC source: 0001193125-25-277015 · ownership.xml · nonDerivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 350,910

Read SEC document
September 30, 2025 Filed Oct 2, 2025 20:40 UTC CABOT CORP CBT · Entity 4032 GrantPhantom Stock Units · Derivative 333.7885 $76.05 $25,384.62
Disclosure

SEC source: 0001193125-25-228494 · ownership.xml · derivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,330.9641

Underlying: Common Stock · 333.7885 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · derivative.exercise_date: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

F2 · derivative.expiration_date: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

Read SEC document
September 11, 2025 Filed Sep 15, 2025 21:30 UTC CABOT CORP CBT · Entity 4032 GrantPhantom Stock Units · Derivative 241.6837 $81.47 $19,689.97
Disclosure

SEC source: 0001193125-25-203812 · ownership.xml · derivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,997.1756

Underlying: Common Stock · 241.6837 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · derivative.exercise_date: Represents dividends paid on phantom stock units acquired under the Corporation's Supplemental 401(k) Plan and are to be settled upon the reporting person's retirement or other termination of employment.

F2 · derivative.expiration_date: Represents dividends paid on phantom stock units acquired under the Corporation's Supplemental 401(k) Plan and are to be settled upon the reporting person's retirement or other termination of employment.

Read SEC document
August 14, 2025 Filed Aug 15, 2025 21:00 UTC CABOT CORP CBT · Entity 4032 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 87,981 $0.00 Strike: $50.46 $0.00
Disclosure

SEC source: 0001435737-25-000006 · ownership.xml · derivative · entry 9

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 87,981 shares

Expires 2026-11-10

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_date: 87,981 shares were subject to the option. The option vested over a three year period as follows: 30% on November 11, 2017, 30% on November 11, 2018 and 40% on November 11, 2019.

Read SEC document
August 14, 2025 Filed Aug 15, 2025 21:00 UTC CABOT CORP CBT · Entity 4032 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 26,455 $0.00 Strike: $49.26 $0.00
Disclosure

SEC source: 0001435737-25-000006 · ownership.xml · derivative · entry 8

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 26,455 shares

Expires 2026-03-20

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_date: 26,455 shares were subject to the option. The option vested over a three year period as follows: 30% on March 21, 2017, 30% on March 21, 2018 and 40% on March 21, 2019.

Read SEC document
August 14, 2025 Filed Aug 15, 2025 21:00 UTC CABOT CORP CBT · Entity 4032 SaleCommon Stock 2,369 $79.63 $188,634.47
Disclosure

SEC source: 0001435737-25-000006 · ownership.xml · nonDerivative · entry 6

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 361,518

F4 · price: The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $79.580 to $79.740, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, the Corporation or any security holder of the Corporation, upon request, full information regarding the number of shares sold at each separate price.

Read SEC document
August 14, 2025 Filed Aug 15, 2025 21:00 UTC CABOT CORP CBT · Entity 4032 SaleCommon Stock 24,086 $79.25 $1,908,784.19
Disclosure

SEC source: 0001435737-25-000006 · ownership.xml · nonDerivative · entry 5

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 363,887

F3 · price: The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $78.580 to $79.570, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, the Corporation or any security holder of the Corporation, upon request, full information regarding the number of shares sold at each separate price.

Read SEC document
August 14, 2025 Filed Aug 15, 2025 21:00 UTC CABOT CORP CBT · Entity 4032 Exercise / conversionCommon Stock 26,455 $49.26 $1,303,173.30
Disclosure

SEC source: 0001435737-25-000006 · ownership.xml · nonDerivative · entry 4

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 387,973

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
August 14, 2025 Filed Aug 15, 2025 21:00 UTC CABOT CORP CBT · Entity 4032 SaleCommon Stock 7,677 $79.62 $611,225.85
Disclosure

SEC source: 0001435737-25-000006 · ownership.xml · nonDerivative · entry 3

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 361,518

F2 · price: The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $79.570 to $79.690, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, the Corporation or any security holder of the Corporation, upon request, full information regarding the number of shares sold at each separate price.

Read SEC document
August 14, 2025 Filed Aug 15, 2025 21:00 UTC CABOT CORP CBT · Entity 4032 SaleCommon Stock 80,304 $79.24 $6,363,449.57
Disclosure

SEC source: 0001435737-25-000006 · ownership.xml · nonDerivative · entry 2

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 369,195

F1 · price: The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $78.570 to $79.565, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, the Corporation or any security holder of the Corporation, upon request, full information regarding the number of shares sold at each separate price.

Read SEC document
August 14, 2025 Filed Aug 15, 2025 21:00 UTC CABOT CORP CBT · Entity 4032 Exercise / conversionCommon Stock 87,981 $50.46 $4,439,521.26
Disclosure

SEC source: 0001435737-25-000006 · ownership.xml · nonDerivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 449,499

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 30, 2025 Filed Jul 1, 2025 21:00 UTC CABOT CORP CBT · Entity 4032 GrantPhantom Stock Units · Derivative 266.6667 $75.00 $20,000.00
Disclosure

SEC source: 0000950170-25-092309 · ownership.xml · derivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,755.492

Underlying: Common Stock · 266.6667 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · derivative.exercise_date: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

F2 · derivative.expiration_date: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

Read SEC document
June 13, 2025 Filed Jun 16, 2025 22:30 UTC CABOT CORP CBT · Entity 4032 GrantPhantom Stock Units · Derivative 260.3428 $74.72 $19,452.81
Disclosure

SEC source: 0000950170-25-086933 · ownership.xml · derivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,488.8252

Underlying: Common Stock · 260.3428 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · derivative.exercise_date: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

F2 · derivative.expiration_date: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

Read SEC document
April 22, 2025 Filed Apr 24, 2025 21:29 UTC Chemours Co CC · Entity 4420 GrantCommon Stock 14,096 $0.00 $0.00
Disclosure

SEC source: 0001062993-25-007923 · form4.xml · nonDerivative · entry 1

Keohane Sean D · CIK 0001435737 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 63,872.1309

F1 · shares: Represents stock units that will convert one-for-one to Chemours common stock upon separation from service on the board.

F2 · balance_after: Includes directly owned shares, stock units and dividend equivalent units.

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March 14, 2025 Filed Mar 18, 2025 21:30 UTC CABOT CORP CBT · Entity 4032 GrantPhantom Stock Units · Derivative 221.9756 $83.31 $18,492.79
Disclosure

SEC source: 0000950170-25-041455 · ownership.xml · derivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,228.4824

Underlying: Common Stock · 221.9756 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · derivative.exercise_date: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

F2 · derivative.expiration_date: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

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December 31, 2024 Filed Jan 3, 2025 22:30 UTC CABOT CORP CBT · Entity 4032 GrantPhantom Stock Units · Derivative 2,461.0633 $91.31 $224,719.69
Disclosure

SEC source: 0000950170-25-001375 · ownership.xml · derivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,006.5068

Underlying: Common Stock · 2,461.0633 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · derivative.exercise_date: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

F2 · derivative.expiration_date: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

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December 13, 2024 Filed Dec 17, 2024 22:12 UTC CABOT CORP CBT · Entity 4032 GrantPhantom Stock Units · Derivative 167.9467 $103.38 $17,362.33
Disclosure

SEC source: 0000950170-24-137367 · ownership.xml · derivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,545.4435

Underlying: Common Stock · 167.9467 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · derivative.exercise_date: Represents dividends paid on phantom stock units acquired under the Corporation's Supplemental 401(k) Plan and are to be settled upon the reporting person's retirement or other termination of employment.

F2 · derivative.expiration_date: Represents dividends paid on phantom stock units acquired under the Corporation's Supplemental 401(k) Plan and are to be settled upon the reporting person's retirement or other termination of employment.

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November 18, 2024 Filed Nov 20, 2024 22:00 UTC CABOT CORP CBT · Entity 4032 Tax withholdingCommon Stock 20,631 $108.82 $2,245,065.42
Disclosure

SEC source: 0000950170-24-129375 · ownership.xml · nonDerivative · entry 2

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 361,518

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November 18, 2024 Filed Nov 20, 2024 22:00 UTC CABOT CORP CBT · Entity 4032 GrantCommon Stock 45,842 $0.00 $0.00
Disclosure

SEC source: 0000950170-24-129375 · ownership.xml · nonDerivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 382,149

F1 · shares: Consists of performance based units earned on the basis of the Corporation's performance in fiscal year 2024, of which 28,581 remain subject to time-based vesting.

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November 12, 2024 Filed Nov 13, 2024 22:00 UTC CABOT CORP CBT · Entity 4032 Tax withholdingCommon Stock 11,824 $112.54 $1,330,672.96
Disclosure

SEC source: 0000950170-24-126459 · ownership.xml · nonDerivative · entry 2

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 336,307

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November 08, 2024 Filed Nov 13, 2024 22:00 UTC CABOT CORP CBT · Entity 4032 GrantEmployee Stock Option (Right to Buy) · Derivative 50,600 $0.00 Strike: $114.99 $0.00
Disclosure

SEC source: 0000950170-24-126459 · ownership.xml · derivative · entry 4

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,600

Underlying: Common Stock · 50,600 shares

Expires 2034-11-07

F1 · derivative.exercise_date: The option vests over a three year period as follows: 30% on November 8, 2025, 30% on November 8, 2026 and 40% on November 8, 2027.

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November 08, 2024 Filed Nov 13, 2024 22:00 UTC CABOT CORP CBT · Entity 4032 GrantCommon Stock 16,957 $0.00 $0.00
Disclosure

SEC source: 0000950170-24-126459 · ownership.xml · nonDerivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 348,131

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September 30, 2024 Filed Oct 2, 2024 21:30 UTC CABOT CORP CBT · Entity 4032 GrantPhantom Stock Units · Derivative 227.1147 $111.77 $25,384.61
Disclosure

SEC source: 0000950170-24-111680 · ownership.xml · derivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,377.4967

Underlying: Common Stock · 227.1147 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · derivative.exercise_date: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

F2 · derivative.expiration_date: The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

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September 13, 2024 Filed Sep 17, 2024 21:00 UTC CABOT CORP CBT · Entity 4032 GrantPhantom Stock Units · Derivative 164.1441 $104.75 $17,194.09
Disclosure

SEC source: 0000950170-24-107339 · ownership.xml · derivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,150.382

Underlying: Common Stock · 164.1441 shares

Expires not disclosed

F1 · derivative.exercise_price: 1 for 1

F2 · derivative.exercise_date: Represents dividends paid on phantom stock units acquired under the Corporation's Supplemental 401(k) Plan and are to be settled upon the reporting person's retirement or other termination of employment.

F2 · derivative.expiration_date: Represents dividends paid on phantom stock units acquired under the Corporation's Supplemental 401(k) Plan and are to be settled upon the reporting person's retirement or other termination of employment.

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September 03, 2024 Filed Sep 4, 2024 20:34 UTC CABOT CORP CBT · Entity 4032 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 25,617 $0.00 Strike: $39.54 $0.00
Disclosure

SEC source: 0000950170-24-103447 · ownership.xml · derivative · entry 5

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 25,617 shares

Expires 2025-11-11

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_date: 25,617 shares were subject to the option. The option vested over a three year period as follows: 30% on November 12, 2016, 30% on November 12, 2017 and 40% on November 12, 2018.

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September 03, 2024 Filed Sep 4, 2024 20:34 UTC CABOT CORP CBT · Entity 4032 SaleCommon Stock 7,752 $102.28 $792,856.73
Disclosure

SEC source: 0000950170-24-103447 · ownership.xml · nonDerivative · entry 3

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 331,174

F2 · price: The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $101.820 to $102.655, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, the Corporation or any security holder of the Corporation, upon request, full information regarding the number of shares sold at each separate price.

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September 03, 2024 Filed Sep 4, 2024 20:34 UTC CABOT CORP CBT · Entity 4032 SaleCommon Stock 17,865 $101.23 $1,808,511.47
Disclosure

SEC source: 0000950170-24-103447 · ownership.xml · nonDerivative · entry 2

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 338,926

F1 · price: The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $100.820 to $101.810, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, the Corporation or any security holder of the Corporation, upon request, full information regarding the number of shares sold at each separate price.

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September 03, 2024 Filed Sep 4, 2024 20:34 UTC CABOT CORP CBT · Entity 4032 Exercise / conversionCommon Stock 25,617 $39.54 $1,012,896.18
Disclosure

SEC source: 0000950170-24-103447 · ownership.xml · nonDerivative · entry 1

Keohane Sean D · CIK 0001435737 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 356,791

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
August 06, 2024 Filed Aug 7, 2024 20:58 UTC Chemours Co CC · Entity 4420 GrantCommon Stock 8,547 $0.00 $0.00
Disclosure

SEC source: 0001062993-24-014627 · form4.xml · nonDerivative · entry 1

Keohane Sean D · CIK 0001435737 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,873.7865

F1 · shares: Represents stock units that will convert one-for-one to Chemours common stock upon separation from service on the board.

F2 · balance_after: Includes directly owned shares, stock units and dividend equivalent units.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.