Mossler Mark

SEC CIK 1992219 · EDGAR

Companies

Ticker	Company	Title	Holding	Bought	Sold	Trades	First	Last
CCCC	C4 Therapeutics, Inc.	CAO	75.2K	—	—	5	2024-02-14	2026-02-14

Most active insiders at CCCC, 12 months

#	Insider	Title	Bought	Sold
1	REYNO LEONARD	Chief Medical Off	—	$22.2K
2	Mahaney Paige	CSO	—	—
3	Mossler Mark	CAO	—	—
4	Adams Kendra	CFO	—	—
5	Boyle Scott N	Chief Business Off	—	—
6	Anderson Kenneth Carl	Dir	—	—
7	Schick Kelly	CHRO	—	—
8	GROGAN DONNA ROY	Dir	—	—
9	Hirsch Andrew	Pres, CEO, Dir	—	—

Transactions 5

X	Filed	Traded	Ticker	Company	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
	2026-02-18	2026-02-14	CCCC	C4 Therapeutics, Inc.	Mossler Mark	CAO	M - OptEx	$0.00	+9,420	75.2K	+14%	$0
	2026-02-18	2026-02-13	CCCC	C4 Therapeutics, Inc.	Mossler Mark	CAO	A - Grant	$0.00	+57.0K	75.2K	+313%	$0
	2026-02-18	2026-02-14	CCCC	C4 Therapeutics, Inc.	Mossler Mark	CAO	F - Tax	$1.89	-3,268	71.9K	-4%	-$6,177
	2025-02-18	2025-02-14	CCCC	C4 Therapeutics, Inc.	Mossler Mark	CAO	F - Tax	$3.18	-1,586	18.2K	-8%	-$5,043
D	2024-04-10	2024-02-14	CCCC	C4 Therapeutics, Inc.	Mossler Mark	CAO	A - Grant	$0.00	+18.3K	19.8K	+1,219%	$0

Purchase Sale Sale after option exercise All abbreviations