C4 Therapeutics, Inc.

Biological Products, (no Diagnostic Substances)

NASDAQ.CCCC

490 Arsenal Way, Suite 120, Watertown, MA, 02472

Amount	Security	Market Value
216,827	COM STK	$1,235,914
2,361,768	COM STK	$13,462,078
200	COM STK	$1,140
27,370	COM STK	$156,012
95,649	COM	$545,195
1,912,322	COM STK	$10,900,235
31,350	COM	$178,695
3,875	COM STK	$22,824
93,613	COM STK	$533,594
6,545	COM STK	$37,306
103,876	COM STK	$592,093
27,672	COM STK	$157,730
29,500	COM STK	$168
35	COM STK	$200
481,725	COM STK	$2,745,833
9	COM STK	$51
153,181	COM STK	$873,132
55,231	COM STK	$314,817
77,800	CALL	$443
18,700	COM STK	$106,590
143	COM STK	$1
15,446	COM STK	$88
1,855	COM STK	$10,574
1,319,484	COM STK	$7,521,059
1,065	COM STK	$6,273
80,499	COM	$458
42,466	COM	$242,056
150,000	CALL	$855,000
3,326,041	COM STK	$18,958,434
55,200	COM STK	$314,640
69,214	COM STK	$394,520
17,704	COM STK	$100,913
62,175	COM STK	$354,398
32,235	COMMON STOCK	$183,740
41,664	COM STK	$237,485
546	Common Stock	$3,112
682	COM STK	$3,887
11,355	COM	$64,724
180	COM STK	$1,026
1,000	COM STK	$5,700
5,744	COM	$32,741
178,656	COM STK	$1,018,339
26,917	COM STK	$153,427
25,279	COM STK	$144,090
451,758	COM	$2,575,021
159,758	CMN	$910,621
147,874	COM STK	$842,882
331	COM STK	$1
5,137	COM STK	$29,000
1,256,851	COM STK	$7,165,485

Amount	Security	Market Value
216,827	COM STK	$1,235,914
2,361,768	COM STK	$13,462,078
200	COM STK	$1,140
27,370	COM STK	$156,012
95,649	COM	$545,195
1,912,322	COM STK	$10,900,235
31,350	COM	$178,695
3,875	COM STK	$22,824
93,613	COM STK	$533,594
6,545	COM STK	$37,306
103,876	COM STK	$592,093
27,672	COM STK	$157,730
29,500	COM STK	$168
35	COM STK	$200
481,725	COM STK	$2,745,833
9	COM STK	$51
153,181	COM STK	$873,132
55,231	COM STK	$314,817
77,800	CALL	$443
18,700	COM STK	$106,590
143	COM STK	$1
15,446	COM STK	$88
1,855	COM STK	$10,574
1,319,484	COM STK	$7,521,059
1,065	COM STK	$6,273
80,499	COM	$458
42,466	COM	$242,056
150,000	CALL	$855,000
3,326,041	COM STK	$18,958,434
55,200	COM STK	$314,640
69,214	COM STK	$394,520
17,704	COM STK	$100,913
62,175	COM STK	$354,398
32,235	COMMON STOCK	$183,740
41,664	COM STK	$237,485
546	Common Stock	$3,112
682	COM STK	$3,887
11,355	COM	$64,724
180	COM STK	$1,026
1,000	COM STK	$5,700
5,744	COM	$32,741
178,656	COM STK	$1,018,339
26,917	COM STK	$153,427
25,279	COM STK	$144,090
451,758	COM	$2,575,021
159,758	CMN	$910,621
147,874	COM STK	$842,882
331	COM STK	$1
5,137	COM STK	$29,000
1,256,851	COM STK	$7,165,485

Institutional Owners