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C4 Therapeutics, Inc. (CCCC)

C4 Therapeutics, Inc. (CCCC) Insider Trading

Directors, officers and holders of more than 10% of CCCC report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 50 most recent of 142 transactions on file: 0 with code P, 1 with code S and 49 with other codes.

DateInsiderCodeShares
Oct 1, 2026GROGAN DONNA ROYA Award4,618
Oct 1, 2026Anderson Kenneth CarlA Award3,662
Sep 18, 2026Adams KendraF Tax Payment2,775
Sep 18, 2026Adams KendraM Exercise6,250
Jul 10, 2026REYNO LEONARDM Exercise15,325
Jul 10, 2026REYNO LEONARDF Tax Payment7,397
Jul 1, 2026GROGAN DONNA ROYA Award3,341
Jul 1, 2026Anderson Kenneth CarlA Award2,650
Jun 24, 2026Anderson Kenneth CarlA Award62,000
Jun 24, 2026Koppikar UtpalA Award62,000
Jun 24, 2026Fawell StephenA Award62,000
Jun 24, 2026Hoerter Steven L.A Award62,000
Jun 24, 2026Cooper Ronald Harold WilfredA Award62,000
Jun 24, 2026Hughes OwenA Award62,000
Jun 24, 2026Bessen LauraA Award62,000
Jun 24, 2026GROGAN DONNA ROYA Award62,000
Jun 1, 2026Anderson Kenneth CarlM Exercise1,070
Jun 1, 2026Anderson Kenneth CarlM Exercise1,070
Apr 1, 2026Anderson Kenneth CarlA Award4,259
Apr 1, 2026GROGAN DONNA ROYA Award5,370
Feb 15, 2026Hirsch AndrewF Tax Payment9,057
Feb 15, 2026Hirsch AndrewM Exercise20,400
Feb 14, 2026Mahaney PaigeF Tax Payment2,446
Feb 14, 2026Mahaney PaigeM Exercise7,050
Feb 14, 2026Mossler MarkM Exercise9,420
Feb 14, 2026Mossler MarkF Tax Payment3,268
Feb 14, 2026Schick KellyF Tax Payment7,269
Feb 14, 2026Adams KendraM Exercise30,950
Feb 14, 2026Adams KendraF Tax Payment15,381
Feb 14, 2026Schick KellyM Exercise20,950
Feb 14, 2026Boyle Scott NF Tax Payment7,269
Feb 14, 2026Boyle Scott NM Exercise20,950
Feb 14, 2026Hirsch AndrewM Exercise81,725
Feb 14, 2026REYNO LEONARDF Tax Payment16,579
Feb 14, 2026REYNO LEONARDM Exercise30,950
Feb 14, 2026Hirsch AndrewF Tax Payment39,154
Feb 13, 2026Mahaney PaigeA Award240,000
Feb 13, 2026Schick KellyM Exercise5,000
Feb 13, 2026Schick KellyA Award200,000
Feb 13, 2026Hirsch AndrewA Award700,000
Feb 13, 2026Mossler MarkA Award56,980
Feb 13, 2026Boyle Scott NF Tax Payment1,735
Feb 13, 2026Boyle Scott NM Exercise5,000
Feb 13, 2026Boyle Scott NA Award200,000
Feb 13, 2026Adams KendraA Award240,000
Feb 13, 2026Adams KendraM Exercise3,750
Feb 13, 2026Schick KellyF Tax Payment1,735
Feb 13, 2026REYNO LEONARDA Award240,000
Feb 13, 2026Adams KendraF Tax Payment1,863
Jan 16, 2026REYNO LEONARDS Sale10,000

The full Form 4 history is on the CCCC company page (Insider Trades card, View all).

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.