Kenneth Carl Anderson - 01 Oct 2025 Form 4 Insider Report for C4 Therapeutics, Inc. (CCCC)

Role
Director
Signature
/s/ Jolie M. Siegel, Attorney-in-Fact
Issuer symbol
CCCC
Transactions as of
01 Oct 2025
Transactions value $
$11,500
Form type
4
Filing time
03 Oct 2025, 16:14:17 UTC
Previous filing
02 Jul 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Anderson Kenneth Carl Director C/O C4 THERAPEUTICS, INC., 490 ARSENAL WAY #120, WATERTOWN /s/ Jolie M. Siegel, Attorney-in-Fact 03 Oct 2025 0001824862

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CCCC Common Stock Award $11.5K +5.35K +3.96% $2.15 141K 01 Oct 2025 Direct F1, F2
holding CCCC Common Stock 47.3K 01 Oct 2025 By Spouse
holding CCCC Common Stock 61.3K 01 Oct 2025 By Kenneth C. Anderson 2016 Grantor Retained Annuity Trust F3
holding CCCC Common Stock 61.3K 01 Oct 2025 By Cynthia E. Anderson 2016 Grantor Retained Annuity Trust F4
holding CCCC Common Stock 16.9K 01 Oct 2025 By Kenneth C. Anderson 2015 Irrevocable Trust F5
holding CCCC Common Stock 16.9K 01 Oct 2025 By Cynthia E. Anderson 2015 Irrevocable Trust F6
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
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, 2025.
F3 Shares held by the Kenneth C. Anderson 2016 Grantor Retained Annuity Trust. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.
F4 Shares held by the Cynthia E. Anderson 2016 Grantor Retained Annuity Trust. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.
F5 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.
F6 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.