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  4. [Form 4] C4 Therapeutics, Inc. Insider Trading Activity

Director at C4 Therapeutics (NASDAQ: CCCC) granted 4,259 shares

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Anderson Kenneth Carl reported acquisition or exercise transactions in this Form 4 filing.

C4 Therapeutics director Kenneth Carl Anderson received a grant of 4,259 shares of common stock of C4 Therapeutics, Inc. as compensation for his services as a non-employee director, in lieu of cash fees. The grant was valued at $2.70 per share, based on the closing market price on April 1, 2026. Following this award, he holds 68,230 shares directly, and additional shares are held indirectly through several irrevocable and revocable trusts, for which he disclaims beneficial ownership except to the extent of his pecuniary interest.

Positive

  • None.

Negative

  • None.
Insider Anderson Kenneth Carl
Role Director
Type Security Shares Price Value
Grant/Award Common Stock 4,259 $2.70 $11K
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 68,230 shares (Direct); Common Stock — 129,877 shares (Indirect, By Kenneth C. Anderson 2021 Irrevocable Trust)
Footnotes (1)
  1. 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. The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on April 1, 2026. 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. 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. 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. 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. 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.
Stock grant size 4,259 shares Common stock grant to non-employee director on April 1, 2026
Grant valuation price $2.70 per share Based on closing market price on April 1, 2026
Direct holdings after grant 68,230 shares Common stock held directly by Kenneth Carl Anderson after transaction
Trust holding (2021 Irrevocable Trust) 129,877 shares Common stock held by the Kenneth C. Anderson 2021 Irrevocable Trust
Trust holding (2015 Irrevocable Trust) 74,581 shares Common stock held by the Kenneth C. Anderson 2015 Irrevocable Trust
Trust holding (Cynthia E. Anderson 2015 Trust) 74,581 shares Common stock held by the Cynthia E. Anderson 2015 Irrevocable Trust
Trust holding (Kenneth C. Anderson Revocable Trust) 3,623 shares Common stock held by the Kenneth C. Anderson Revocable Trust
Trust holding (Cynthia E. Anderson Revocable Trust) 3,623 shares Common stock held by the Cynthia E. Anderson Revocable Trust
Non-Employee Director Compensation Policy financial
"issued in accordance with the Issuer's Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected"
pecuniary interest financial
"disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein"
irrevocable trust financial
"Shares held by the Kenneth C. Anderson 2021 Irrevocable Trust"
revocable trust financial
"Shares held by the Kenneth C. Anderson Revocable Trust"
A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.
grant, award, or other acquisition financial
"transaction_code_description": "Grant, award, or other acquisition"
Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Anderson Kenneth Carl
(Last)(First)(Middle)
C/O C4 THERAPEUTICS, INC.
490 ARSENAL WAY #120
(Street)
WATERTOWN MASSACHUSETTS 02472
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
C4 Therapeutics, Inc. [ CCCC ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/01/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock04/01/2026A(1)4,259A$2.7(2)68,230D
Common Stock129,877IBy Kenneth C. Anderson 2021 Irrevocable Trust(3)
Common Stock74,581IBy Kenneth C. Anderson 2015 Irrevocable Trust(4)
Common Stock74,581IBy Cynthia E. Anderson 2015 Irrevocable Trust(5)
Common Stock3,623IBy Kenneth C. Anderson Revocable Trust(6)
Common Stock3,623IBy Cynthia E. Anderson Revocable Trust(7)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. 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.
2. The price reported in Column 4 is based upon the closing market price of the Issuer's common stock on April 1, 2026.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.
Remarks:
/s/ Shagha Russell, Attorney-in-Fact04/03/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR