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Martinko Joseph T.

Disclosed activity across 1 company

Tapewire entity
24656
SEC CIK
0001988020

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Chemours CoCC · Entity 4420See RemarksAugust 07, 2026August 11, 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.

Chemours Co

Report date August 07, 2026 · Filed August 11, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect55,431.4012 Reported balance After 2026-08-07 transaction · row 1 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 1 · 2026-08-07 · Purchase · Acquired 1,939.8014 · Balance 55,431.4012

F1: Includes directly owned shares, restricted stock units and dividend equivalent units.

Filing footnotes · ownership attribution and instrument terms

F1: Includes directly owned shares, restricted 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
August 07, 2026 Filed Aug 11, 2026 20:10 UTC Chemours Co CC · Entity 4420 PurchaseCommon Stock 1,939.8014 $15.47 $30,008.73
Disclosure

SEC source: 0001193125-26-344633 · ownership.xml · nonDerivative · entry 1

Martinko Joseph T. · CIK 0001988020 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,431.4012

F1 · balance_after: Includes directly owned shares, restricted stock units and dividend equivalent units.

Read SEC document
August 01, 2026 Filed Aug 4, 2026 20:10 UTC Chemours Co CC · Entity 4420 Tax withholdingCommon Stock 663 $16.61 $11,012.43
Disclosure

SEC source: 0001193125-26-332807 · ownership.xml · nonDerivative · entry 1

Martinko Joseph T. · CIK 0001988020 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,818.5559

F1 · kind: Shares automatically withheld to satisfy tax obligations on vesting restricted stock units and dividend equivalent units. Transactions are exempt from Section 16(b) pursuant to Rule 16b-3. No shares were sold.

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

Read SEC document
March 02, 2026 Filed Mar 4, 2026 01:03 UTC Chemours Co CC · Entity 4420 GrantCommon Stock 28,488 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-089431 · ownership.xml · nonDerivative · entry 2

Martinko Joseph T. · CIK 0001988020 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,889.1669

F2 · shares: RSU award scheduled to vest in three equal annual installments beginning on March 1, 2027.

F3 · balance_after: Includes directly owned shares, RSUs and dividend equivalent units.

Read SEC document
March 01, 2026 Filed Mar 4, 2026 01:03 UTC Chemours Co CC · Entity 4420 Tax withholdingCommon Stock 2,789 $18.24 $50,871.36
Disclosure

SEC source: 0001193125-26-089431 · ownership.xml · nonDerivative · entry 1

Martinko Joseph T. · CIK 0001988020 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,401.1669

F1 · shares: Shares automatically withheld to satisfy tax obligations on vesting restricted stock units ("RSUs") and dividend equivalent units. Transactions are exempt from Section 16(b) pursuant to Rule 16b-3. No shares were sold.

Read SEC document
August 01, 2025 Filed Aug 5, 2025 23:21 UTC Chemours Co CC · Entity 4420 Tax withholdingCommon Stock 649 $11.50 $7,463.50
Disclosure

SEC source: 0001062993-25-013652 · form4.xml · nonDerivative · entry 1

Martinko Joseph T. · CIK 0001988020 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,936.6241

F1 · kind: Shares automatically withheld to satisfy tax obligations on vesting restricted stock units and dividend equivalent units. Transactions are exempt from Section 16(b) pursuant to Rule 16b-3. No shares were sold.

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

Read SEC document
March 03, 2025 Filed Mar 6, 2025 01:46 UTC Chemours Co CC · Entity 4420 GrantStock Option (Right to Buy) · Derivative 46,451 $0.00 Strike: $15.25 $0.00
Disclosure

SEC source: 0001062993-25-004726 · form4.xml · derivative · entry 3

Martinko Joseph T. · CIK 0001988020 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,451

Underlying: Common Stock · 46,451 shares

Expires 2035-03-03

F4 · derivative.exercise_price: Represents a 10 percent premium above the closing price of the Company common stock on the date of grant.

F3 · derivative.exercise_date: These options are scheduled to vest in three equal annual installments beginning on March 3, 2026.

Read SEC document
March 03, 2025 Filed Mar 6, 2025 01:46 UTC Chemours Co CC · Entity 4420 GrantStock Option (Right to Buy) · Derivative 44,664 $0.00 Strike: $13.86 $0.00
Disclosure

SEC source: 0001062993-25-004726 · form4.xml · derivative · entry 2

Martinko Joseph T. · CIK 0001988020 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,664

Underlying: Common Stock · 44,664 shares

Expires 2035-03-03

F3 · derivative.exercise_date: These options are scheduled to vest in three equal annual installments beginning on March 3, 2026.

Read SEC document
March 03, 2025 Filed Mar 6, 2025 01:46 UTC Chemours Co CC · Entity 4420 GrantCommon Stock 13,437 $0.00 $0.00
Disclosure

SEC source: 0001062993-25-004726 · form4.xml · nonDerivative · entry 1

Martinko Joseph T. · CIK 0001988020 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,088.1458

F1 · shares: Restricted Stock Unit ("RSU") award scheduled to vest in three equal annual installments beginning on March 1, 2026.

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

Read SEC document
March 01, 2025 Filed Mar 5, 2025 01:49 UTC Chemours Co CC · Entity 4420 Tax withholdingCommon Stock 1,302 $14.95 $19,464.90
Disclosure

SEC source: 0001062993-25-004439 · form4.xml · nonDerivative · entry 1

Martinko Joseph T. · CIK 0001988020 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,651.1458

F1 · kind: Shares automatically withheld to satisfy tax obligations on vesting restricted stock units and dividend equivalent units. Transactions are exempt from Section 16(b) pursuant to Rule 16b-3. No shares were sold.

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

Read SEC document
August 01, 2024 Filed Aug 5, 2024 20:49 UTC Chemours Co CC · Entity 4420 Tax withholdingCommon Stock 574 $23.31 $13,379.94
Disclosure

SEC source: 0001062993-24-014441 · form4.xml · nonDerivative · entry 1

Martinko Joseph T. · CIK 0001988020 · President, Thermal & Specializ

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,953.1458

F1 · kind: Shares automatically withheld to satisfy tax obligations on vesting restricted stock units and dividend equivalent units. Transactions are exempt from Section 16(b) pursuant to Rule 16b-3. No shares were sold.

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

Read SEC document
May 08, 2024 Filed May 10, 2024 20:04 UTC Chemours Co CC · Entity 4420 GrantPerformance Stock Option (Right to Buy) · Derivative 16,439 $0.00 Strike: $30.25 $0.00
Disclosure

SEC source: 0001062993-24-009879 · form4.xml · derivative · entry 3

Martinko Joseph T. · CIK 0001988020 · President, Thermal & Specializ

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,439

Underlying: Common Stock · 16,439 shares

Expires 2034-05-08

F4 · derivative.exercise_price: Represents a 10 percent premium above the closing price of the Company common stock on the date of grant.

F3 · derivative.exercise_date: These options are scheduled to vest in three equal annual installments beginning on May 8, 2025.

Read SEC document
May 08, 2024 Filed May 10, 2024 20:04 UTC Chemours Co CC · Entity 4420 GrantStock Option (Right to Buy) · Derivative 15,807 $0.00 Strike: $27.50 $0.00
Disclosure

SEC source: 0001062993-24-009879 · form4.xml · derivative · entry 2

Martinko Joseph T. · CIK 0001988020 · President, Thermal & Specializ

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,807

Underlying: Common Stock · 15,807 shares

Expires 2034-05-08

F3 · derivative.exercise_date: These options are scheduled to vest in three equal annual installments beginning on May 8, 2025.

Read SEC document
May 08, 2024 Filed May 10, 2024 20:04 UTC Chemours Co CC · Entity 4420 GrantCommon Stock 5,909 $0.00 $0.00
Disclosure

SEC source: 0001062993-24-009879 · form4.xml · nonDerivative · entry 1

Martinko Joseph T. · CIK 0001988020 · President, Thermal & Specializ

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,392.4726

F1 · shares: Restricted Stock Unit (RSU) award scheduled to vest in three equal annual installments beginning on March 1, 2025.

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

Read SEC document
March 01, 2024 Filed Mar 6, 2024 00:07 UTC Chemours Co CC · Entity 4420 Tax withholdingCommon Stock 795 $20.78 $16,520.10
Disclosure

SEC source: 0001062993-24-005611 · form4.xml · nonDerivative · entry 1

Martinko Joseph T. · CIK 0001988020 · President, Thermal & Specializ

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,830.5296

F1 · kind: Shares automatically withheld to satisfy tax obligations on vesting restricted stock units dividend equivalent units. Transactions are exempt from Section 16(b) pursuant to Rule 16b-3. No shares were sold.

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

Read SEC document
August 01, 2023 Filed Aug 3, 2023 21:01 UTC Chemours Co CC · Entity 4420 GrantCommon Stock 5,154 $0.00 $0.00
Disclosure

SEC source: 0001209191-23-044489 · doc4.xml · nonDerivative · entry 1

Martinko Joseph T. · CIK 0001988020 · President, Thermal & Specializ

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,055.4673

F1 · shares: Restricted Stock Unit (RSU) award scheduled to vest in three equal annual installments beginning on August 1, 2024.

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.