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Anderson Kenneth Carl

Disclosed activity across 1 company

Tapewire entity
32615
SEC CIK
0001824862

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
C4 Therapeutics, Inc.CCCC · Entity 5503DirectorOctober 01, 2026October 03, 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.

C4 Therapeutics, Inc.

Report date October 01, 2026 · Filed October 03, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect75,612 Reported balance After 2026-10-01 transaction · row 1
1 source row

Row 1 · 2026-10-01 · Grant · Acquired 3,662 · Balance 75,612

F1: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on October 1, 2026.

Common StockSEC Table I · non-derivativeIndirectBy Kenneth C. Anderson 2021 Irrevocable Trust129,877 Reported balance Holding disclosure · report date 2026-10-01 · row 2 Holding and transaction disclosures are not merged.
1 source row

Row 2 · Balance 129,877

F3: Shares held by the Kenneth C. Anderson 2021 Irrevocable Trust. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectBy Kenneth C. Anderson 2015 Irrevocable Trust74,581 Reported balance Holding disclosure · report date 2026-10-01 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · Balance 74,581

F4: Shares held by the Kenneth C. Anderson 2015 Irrevocable Trust. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectBy Cynthia E. Anderson 2015 Irrevocable Trust74,581 Reported balance Holding disclosure · report date 2026-10-01 · row 4 Holding and transaction disclosures are not merged.
1 source row

Row 4 · Balance 74,581

F5: Shares held by the Cynthia E. Anderson 2015 Irrevocable Trust. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectBy Kenneth C. Anderson Revocable Trust3,623 Reported balance Holding disclosure · report date 2026-10-01 · row 5 Holding and transaction disclosures are not merged.
1 source row

Row 5 · Balance 3,623

F6: Shares held by the Kenneth C. Anderson Revocable Trust. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectBy Cynthia E. Anderson Revocable Trust3,623 Reported balance Holding disclosure · report date 2026-10-01 · row 6 Holding and transaction disclosures are not merged.
1 source row

Row 6 · Balance 3,623

F7: Shares held by the Cynthia E. Anderson Revocable Trust. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on October 1, 2026.

F3: Shares held by the Kenneth C. Anderson 2021 Irrevocable Trust. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

F4: Shares held by the Kenneth C. Anderson 2015 Irrevocable Trust. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

F5: Shares held by the Cynthia E. Anderson 2015 Irrevocable Trust. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

F6: Shares held by the Kenneth C. Anderson Revocable Trust. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

F7: Shares held by the Cynthia E. Anderson Revocable Trust. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

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
October 01, 2026 Filed Oct 3, 2026 00:43 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 3,662 $3.14 $11,498.68
Disclosure

SEC source: 0001470831-26-000925 · wk-form4_1790973827.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,612

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on October 1, 2026.

Read SEC document
July 01, 2026 Filed Jul 2, 2026 20:04 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 2,650 $4.34 $11,501.00
Disclosure

SEC source: 0001470831-26-000688 · wk-form4_1783022665.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,950

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on July 1, 2026.

Read SEC document
June 24, 2026 Filed Jun 26, 2026 20:30 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantStock Option (Right to Buy) · Derivative 62,000 $0.00 Strike: $4.25 $0.00
Disclosure

SEC source: 0001470831-26-000665 · wk-form4_1782505819.xml · derivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,000

Underlying: Common Stock · 62,000 shares

Expires 2036-06-23

F1 · derivative.exercise_date: This option shall vest and become exercisable in full upon the earlier to occur of (i) June 24, 2027 and (ii) the next annual meeting of the Issuer's stockholders, subject to the recipient's continued service as a member of the Board on such date.

Read SEC document
June 01, 2026 Filed Jun 4, 2026 20:14 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionStock Option (Right to Buy) · Derivative 1,070 $0.00 Strike: $2.11 $0.00
Disclosure

SEC source: 0001470831-26-000504 · wk-form4_1780604078.xml · derivative · entry 7

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,070 shares

Expires 2026-07-12

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 · kind: The reported transaction represents the exercise of a stock option for cash. No shares were sold in connection with the exercise.

F7 · derivative.exercise_date: The shares underlying this option are fully vested and exercisable.

Read SEC document
June 01, 2026 Filed Jun 4, 2026 20:14 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionCommon Stock 1,070 $2.11 $2,257.70
Disclosure

SEC source: 0001470831-26-000504 · wk-form4_1780604078.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 69,300

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 · kind: The reported transaction represents the exercise of a stock option for cash. No shares were sold in connection with the exercise.

Read SEC document
April 01, 2026 Filed Apr 3, 2026 14:45 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 4,259 $2.70 $11,499.30
Disclosure

SEC source: 0001470831-26-000346 · wk-form4_1775227552.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 68,230

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on April 1, 2026.

Read SEC document
January 02, 2026 Filed Jan 5, 2026 21:10 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 5,958 $1.93 $11,498.94
Disclosure

SEC source: 0001470831-26-000009 · wk-form4_1767647442.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 146,532

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on January 2, 2026.

Read SEC document
October 01, 2025 Filed Oct 3, 2025 20:14 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 5,349 $2.15 $11,500.35
Disclosure

SEC source: 0001470831-25-000250 · wk-form4_1759522454.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 140,574

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on October 1, 2025.

Read SEC document
July 01, 2025 Filed Jul 2, 2025 20:17 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 7,616 $1.51 $11,500.16
Disclosure

SEC source: 0001662579-25-000053 · wk-form4_1751487429.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 135,225

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on July 1, 2025.

Read SEC document
June 18, 2025 Filed Jun 20, 2025 20:11 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantStock Option (Right to Buy) · Derivative 35,500 $0.00 Strike: $1.44 $0.00
Disclosure

SEC source: 0001662579-25-000046 · wk-form4_1750450283.xml · derivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,500

Underlying: Common Stock · 35,500 shares

Expires 2035-06-17

F1 · derivative.exercise_date: This option shall vest and become exercisable in full upon the earlier to occur of (i) June 18, 2026 and (ii) the next annual meeting of the Issuer's stockholders, subject to the recipient's continued service as a member of the Board on such date.

Read SEC document
April 01, 2025 Filed Apr 3, 2025 20:11 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 7,841 $1.44 $11,251.84
Disclosure

SEC source: 0001662579-25-000024 · wk-form4_1743711094.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 127,609

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on April 1, 2025.

Read SEC document
January 02, 2025 Filed Jan 3, 2025 21:08 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 3,074 $3.66 $11,250.84
Disclosure

SEC source: 0001662579-25-000003 · wk-form4_1735938496.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 119,768

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on January 2, 2025.

Read SEC document
October 01, 2024 Filed Oct 2, 2024 20:32 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 2,023 $5.56 $11,247.88
Disclosure

SEC source: 0001662579-24-000089 · wk-form4_1727901140.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 116,694

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on October 1, 2024.

Read SEC document
July 01, 2024 Filed Jul 2, 2024 20:12 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 2,320 $4.85 $11,252.00
Disclosure

SEC source: 0001662579-24-000063 · wk-form4_1719951170.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 114,671

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on July 1, 2024.

Read SEC document
June 20, 2024 Filed Jun 21, 2024 20:07 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantStock Option (Right to Buy) · Derivative 32,500 $0.00 Strike: $4.05 $0.00
Disclosure

SEC source: 0001662579-24-000055 · wk-form4_1719000414.xml · derivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,500

Underlying: Common Stock · 32,500 shares

Expires 2034-06-19

F1 · derivative.exercise_date: This option shall vest and become exercisable in full upon the earlier to occur of (i) June 20, 2025 and (ii) the next annual meeting of the Issuer's stockholders, subject to the recipient's continued service as a member of the Board on such date.

Read SEC document
April 01, 2024 Filed Apr 2, 2024 20:35 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 1,389 $8.10 $11,250.90
Disclosure

SEC source: 0001662579-24-000038 · wk-form4_1712090101.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 112,351

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on April 1, 2024.

Read SEC document
January 02, 2024 Filed Jan 3, 2024 21:11 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 1,725 $6.52 $11,247.00
Disclosure

SEC source: 0001662579-24-000005 · wk-form4_1704316284.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 110,962

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on January 2, 2024.

Read SEC document
October 02, 2023 Filed Oct 3, 2023 20:28 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 6,617 $1.70 $11,248.90
Disclosure

SEC source: 0001662579-23-000109 · wk-form4_1696364878.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 109,237

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on October 2, 2023.

Read SEC document
July 03, 2023 Filed Jul 5, 2023 20:25 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 3,976 $2.83 $11,252.08
Disclosure

SEC source: 0001662579-23-000068 · wk-form4_1688588720.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 102,620

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on July 3, 2023.

Read SEC document
June 15, 2023 Filed Jun 16, 2023 20:25 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantStock Option (Right to Buy) · Derivative 26,000 $0.00 Strike: $3.61 $0.00
Disclosure

SEC source: 0001662579-23-000062 · wk-form4_1686947141.xml · derivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,000

Underlying: Common Stock · 26,000 shares

Expires 2033-06-14

F1 · derivative.exercise_date: This option shall vest and become exercisable in full upon the earlier to occur of (i) June 15, 2024 and (ii) the next annual meeting of the Issuer's stockholders, subject to the recipient's continued service as a member of the Board on such date.

Read SEC document
April 03, 2023 Filed Apr 4, 2023 20:19 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 3,516 $3.20 $11,251.20
Disclosure

SEC source: 0001662579-23-000045 · wf-form4_168063954562598.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 98,644

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on April 3, 2023.

Read SEC document
January 06, 2023 Filed Jan 6, 2023 21:55 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionStock Option (Right to Buy) · Derivative 444 $0.00 Strike: $4.98 $0.00
Disclosure

SEC source: 0001662579-23-000008 · wf-form4_167304210044893.xml · derivative · entry 9

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 890

Underlying: Common Stock · 444 shares

Expires 2030-07-02

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: The shares underlying this option vest and become exercisable in 12 equal quarterly installments, with the first installment vested on October 1, 2020.

Read SEC document
January 06, 2023 Filed Jan 6, 2023 21:55 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionStock Option (Right to Buy) · Derivative 268 $0.00 Strike: $2.11 $0.00
Disclosure

SEC source: 0001662579-23-000008 · wf-form4_167304210044893.xml · derivative · entry 8

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,067

Underlying: Common Stock · 268 shares

Expires 2026-07-12

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: 12.5% of the shares underlying this option vested and became exercisable on December 31, 2016, with the remainder vesting in 28 equal quarterly installments thereafter.

Read SEC document
January 06, 2023 Filed Jan 6, 2023 21:55 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionCommon Stock 444 $4.98 $2,211.12
Disclosure

SEC source: 0001662579-23-000008 · wf-form4_167304210044893.xml · nonDerivative · entry 2

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 95,128

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
January 06, 2023 Filed Jan 6, 2023 21:55 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionCommon Stock 268 $2.11 $565.48
Disclosure

SEC source: 0001662579-23-000008 · wf-form4_167304210044893.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 94,684

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
January 03, 2023 Filed Jan 4, 2023 21:17 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 1,568 $6.38 $10,003.84
Disclosure

SEC source: 0001662579-23-000006 · wf-form4_167286703601250.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 94,416

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on January 3, 2023.

Read SEC document
October 03, 2022 Filed Oct 4, 2022 22:05 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionStock Option (Right to Buy) · Derivative 445 $0.00 Strike: $4.98 $0.00
Disclosure

SEC source: 0001662579-22-000004 · wf-form4_166492110095346.xml · derivative · entry 10

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,334

Underlying: Common Stock · 445 shares

Expires 2030-07-02

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.

F8 · derivative.exercise_date: The shares underlying this option vest and become exercisable in 12 equal quarterly installments, with the first installment vested on October 1, 2020.

Read SEC document
October 03, 2022 Filed Oct 4, 2022 22:05 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionStock Option (Right to Buy) · Derivative 267 $0.00 Strike: $2.11 $0.00
Disclosure

SEC source: 0001662579-22-000004 · wf-form4_166492110095346.xml · derivative · entry 9

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,335

Underlying: Common Stock · 267 shares

Expires 2026-07-12

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.

F7 · derivative.exercise_date: 12.5% of the shares underlying this option vested and became exercisable on December 31, 2016, with the remainder vesting in 28 equal quarterly installments thereafter.

Read SEC document
October 03, 2022 Filed Oct 4, 2022 22:05 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 1,150 $8.69 $9,993.50
Disclosure

SEC source: 0001662579-22-000004 · wf-form4_166492110095346.xml · nonDerivative · entry 3

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 92,848

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on October 3, 2022.

Read SEC document
October 03, 2022 Filed Oct 4, 2022 22:05 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionCommon Stock 445 $4.98 $2,216.10
Disclosure

SEC source: 0001662579-22-000004 · wf-form4_166492110095346.xml · nonDerivative · entry 2

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 91,698

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
October 03, 2022 Filed Oct 4, 2022 22:05 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionCommon Stock 267 $2.11 $563.37
Disclosure

SEC source: 0001662579-22-000004 · wf-form4_166492110095346.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 91,253

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.

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July 15, 2022 Filed Jul 18, 2022 21:18 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionStock Option (Right to Buy) · Derivative 889 $0.00 Strike: $4.98 $0.00
Disclosure

SEC source: 0001209191-22-042457 · doc4.xml · derivative · entry 9

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,779

Underlying: Common Stock · 889 shares

Expires 2030-07-02

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: The shares underlying this option vest and become exercisable in 12 equal quarterly installments, with the first installment vested on October 1, 2020.

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July 15, 2022 Filed Jul 18, 2022 21:18 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionStock Option (Right to Buy) · Derivative 535 $0.00 Strike: $2.11 $0.00
Disclosure

SEC source: 0001209191-22-042457 · doc4.xml · derivative · entry 8

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,602

Underlying: Common Stock · 535 shares

Expires 2026-07-12

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: 12.5% of the shares underlying this option vested and became exercisable on December 31, 2016, with the remainder vesting in 28 equal quarterly installments thereafter.

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July 15, 2022 Filed Jul 18, 2022 21:18 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionCommon Stock 889 $4.98 $4,427.22
Disclosure

SEC source: 0001209191-22-042457 · doc4.xml · nonDerivative · entry 2

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 90,986

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
July 15, 2022 Filed Jul 18, 2022 21:18 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionCommon Stock 535 $2.11 $1,128.85
Disclosure

SEC source: 0001209191-22-042457 · doc4.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 90,097

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
July 01, 2022 Filed Jul 5, 2022 20:11 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 1,246 $8.03 $10,005.38
Disclosure

SEC source: 0001209191-22-040597 · doc4.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,562

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on July 1, 2022.

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June 22, 2022 Filed Jun 23, 2022 20:16 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantStock Option (Right to Buy) · Derivative 23,500 $0.00 Strike: $6.06 $0.00
Disclosure

SEC source: 0001209191-22-038865 · doc4.xml · derivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,500

Underlying: Common Stock · 23,500 shares

Expires 2032-06-21

F1 · derivative.exercise_date: This option shall vest and become exercisable in full upon the earlier to occur of (i) June 22, 2023 and (ii) the next annual meeting of the Issuer's stockholders.

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April 04, 2022 Filed Apr 5, 2022 20:25 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 341 $26.46 $9,022.86
Disclosure

SEC source: 0001209191-22-023016 · doc4.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,316

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on April 4, 2022.

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January 26, 2022 Filed Jan 26, 2022 22:26 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionStock Option (Right to Buy) · Derivative 1,334 $0.00 Strike: $4.98 $0.00
Disclosure

SEC source: 0001209191-22-005107 · doc4.xml · derivative · entry 9

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,668

Underlying: Common Stock · 1,334 shares

Expires 2030-07-02

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: The shares underlying this option vest and become exercisable in 12 equal quarterly installments, with the first installment vested on October 1, 2020.

Read SEC document
January 26, 2022 Filed Jan 26, 2022 22:26 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionStock Option (Right to Buy) · Derivative 803 $0.00 Strike: $2.11 $0.00
Disclosure

SEC source: 0001209191-22-005107 · doc4.xml · derivative · entry 8

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,137

Underlying: Common Stock · 803 shares

Expires 2026-07-12

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: 12.5% of the shares underlying this option vested and became exercisable on December 31, 2016, with the remainder vesting in 28 equal quarterly installments thereafter.

Read SEC document
January 26, 2022 Filed Jan 26, 2022 22:26 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionCommon Stock 1,334 $4.98 $6,643.32
Disclosure

SEC source: 0001209191-22-005107 · doc4.xml · nonDerivative · entry 2

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,975

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
January 26, 2022 Filed Jan 26, 2022 22:26 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionCommon Stock 803 $2.11 $1,694.33
Disclosure

SEC source: 0001209191-22-005107 · doc4.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 86,641

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
January 04, 2022 Filed Jan 18, 2022 21:30 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 278 $31.58 $8,779.24
Disclosure

SEC source: 0001209191-22-003500 · doc4.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,838

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on January 4, 2022.

Read SEC document
October 04, 2021 Filed Oct 5, 2021 20:53 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 194 $44.99 $8,728.06
Disclosure

SEC source: 0001209191-21-059515 · doc4.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,560

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on October 4, 2021.

Read SEC document
July 02, 2021 Filed Jul 7, 2021 20:30 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantCommon Stock 220 $39.72 $8,738.40
Disclosure

SEC source: 0001209191-21-045806 · doc4.xml · nonDerivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,366

F1 · kind: These shares were issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for services as a non-employee director of the Issuer.

F2 · price: The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on July 2, 2021.

Read SEC document
June 15, 2021 Filed Jun 17, 2021 20:15 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 GrantStock Option (Right to Buy) · Derivative 23,500 $0.00 Strike: $37.66 $0.00
Disclosure

SEC source: 0001209191-21-041427 · doc4.xml · derivative · entry 1

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,500

Underlying: Common Stock · 23,500 shares

Expires 2031-06-14

F1 · derivative.exercise_date: This option shall vest and become exercisable in full upon the earlier to occur of (i) June 15, 2022 and (ii) the next annual meeting of the Issuer's stockholders.

Read SEC document
April 14, 2021 Filed Apr 14, 2021 20:39 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionStock Option (Right to Buy) · Derivative 444 $0.00 Strike: $4.98 $0.00
Disclosure

SEC source: 0001209191-21-026665 · doc4.xml · derivative · entry 10

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,002

Underlying: Common Stock · 444 shares

Expires 2030-07-02

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.

F8 · derivative.exercise_date: Represents underlying unexercised options that were granted on July 3, 2020. The terms of the original grant provide that this option shall vest and become exercisable in 12 equal quarterly installments, with the first installment vested on October 1, 2020.

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April 14, 2021 Filed Apr 14, 2021 20:39 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionStock Option (Right to Buy) · Derivative 267 $0.00 Strike: $2.11 $0.00
Disclosure

SEC source: 0001209191-21-026665 · doc4.xml · derivative · entry 9

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,940

Underlying: Common Stock · 267 shares

Expires 2026-07-12

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.

F7 · derivative.exercise_date: Represents underlying unexercised stock options that were granted on July 13, 2016. The terms of the original grant provide that 12.5% of this option vested and became exercisable on December 31, 2016, with the remainder vesting in 28 equal quarterly installments thereafter.

Read SEC document
April 14, 2021 Filed Apr 14, 2021 20:39 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionCommon Stock 444 $4.98 $2,211.12
Disclosure

SEC source: 0001209191-21-026665 · doc4.xml · nonDerivative · entry 4

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,146

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
April 14, 2021 Filed Apr 14, 2021 20:39 UTC C4 Therapeutics, Inc. CCCC · Entity 5503 Exercise / conversionCommon Stock 267 $2.11 $563.37
Disclosure

SEC source: 0001209191-21-026665 · doc4.xml · nonDerivative · entry 3

Anderson Kenneth Carl · CIK 0001824862 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 84,702

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

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