Jolie Siegel - 29 Jul 2021 Form 4 Insider Report for C4 Therapeutics, Inc. (CCCC)

Role: Chief Legal Officer
Signature: /s/ Shoaib Ghias, Attorney-in-Fact
Issuer symbol: CCCC
Transactions as of: 29 Jul 2021
Net transactions value: -$500,250
Form type: 4
Filing time: 02 Aug 2021, 18:49:11 UTC
Next filing: 14 Sep 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CCCC	Common Stock	Options Exercise	$62,250	+12,500		$4.98	12,500	29 Jul 2021	Direct
transaction	CCCC	Common Stock	Sale	$562,500	-12,500	-100%	$45.00^*	0	29 Jul 2021	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	CCCC	Stock Option (Right to Buy)	Options Exercise	$0	-12,500	-4.2%	$0.000000	283,821	29 Jul 2021	Common Stock	12,500	$4.98	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on March 12, 2021.
F2	20% of this option vested and became exercisable on July 1, 2021, with the remainder vesting in 16 equal quarterly installments thereafter.