C4 Therapeutics, Inc.

By person

21 insiders · 85 transactions

3.4×

Andrew J. Hirsch holds only 3.4 times base salary in stock. $2.39M of shares against $694.93K in salary for 2025.

Salary from the company's own proxy. The shares are what Andrew J. Hirsch last reported holding, valued at $2.22, the price Common Stock was last bought or sold at on the open market here, on 16 Jan 2026.

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

Prokupets Elena

Director

—

$8.60M (28)

−$8.60M

1,184,573

0.9629%

$2.63M

+82.3%

Fisher Stewart

Chief Scientific Officer

—

$3.84M (3)

−$3.84M

130,710

0.1062%

$290.18K

+55.1%

Crystal Adam

Chief Medical Officer

—

$2.97M (10) scheduled

−$2.97M

20,097

0.0163%

$44.62K

—

Siegel Jolie

Chief Legal Officer

—

$1.19M (2) scheduled

−$1.19M

107,939

0.0877%

$239.62K

—

Salter Malcolm

Director

$24.99K (1)

$239.79K (8)

−$214.80K

11,380

0.0093%

$25.26K

—

MCKEE WILLIAM

Chief Financial Officer

$100.00K (1)

—

+$100.00K

5,263

0.0043%

$11.68K

—

COHEN MARC A

Director

$95.57K (1)

—

+$95.57K

6,327,970

5.14%

$14.05M

+216.2%

Hirsch Andrew

President & CEO

$84.00K (1)

—

+$84.00K

1,074,934

0.8738%

$2.39M

—

Koppikar Utpal

Director

$31.74K (1)

—

+$31.74K

5,667

0.0046%

$12.58K

—

REYNO LEONARD

Chief Medical Officer

—

$22.20K (1)

−$22.20K

372,406

0.3027%

$826.74K

—

Boyle Scott N

Chief Business Officer

—

$3.65K (2) scheduled

−$3.65K

298,801

0.2429%

$663.34K

—

COHEN ALAIN J

Director

—

4,289,160

3.49%

$9.52M

—

Dubin Glenn

Director

—

812,682

0.6606%

$1.80M

+2.8%

DOWNEY BRUCE

Director

—

489,542

0.3979%

$1.09M

—

Adams Kendra

Chief Financial Officer

—

385,098

0.3130%

$854.92K

—

Mahaney Paige

Chief Scientific Officer

—

336,910

0.2739%

$747.94K

—

Schick Kelly

Chief People Officer

—

299,881

0.2438%

$665.74K

—

Anderson Kenneth Carl

Director

—

275,674

0.2241%

$612.00K

+488.9%

GROGAN DONNA ROY

Director

—

74,853

0.0608%

$166.17K

—

Mossler Mark

Chief Accounting Officer

—

71,916

0.0585%

$159.65K

—

White Lauren

Chief Financial Officer

—

32,686

0.0266%

$72.56K

—

Individual transactions

Insider

Date

Role

Action

Price

Amount

Crystal Adam

4 Jan 2022

Chief Medical Officer

Sold after exercise

1,054

$32.66

$34.42K

Crystal Adam

4 Jan 2022

Chief Medical Officer

Sold after exercise

13,946

$31.59

$440.55K

Crystal Adam

1 Oct 2021

Chief Medical Officer

Sold after exercise

5,112

$45.99

$235.12K

Crystal Adam

1 Oct 2021

Chief Medical Officer

Sold after exercise

8,176

$45.32

$370.56K

Crystal Adam

1 Oct 2021

Chief Medical Officer

Sold after exercise

1,712

$44.25

$75.76K

Siegel Jolie

10 Sep 2021

Chief Legal Officer

Sold after exercise

12,500

$50.00

$625.00K

Crystal Adam

29 Jul 2021

Chief Medical Officer

Sold after exercise

15,000

$45.00

$675.00K

Siegel Jolie

29 Jul 2021

Chief Legal Officer

Sold after exercise

12,500

$45.00

$562.50K

Crystal Adam

1 Jul 2021

Chief Medical Officer

Sold after exercise

1,700

$38.38

$65.25K

Crystal Adam

1 Jul 2021

Chief Medical Officer

Sold after exercise

13,300

$37.93

$504.42K

Crystal Adam

5 Apr 2021

Chief Medical Officer

Sold after exercise

10,879

$38.00

$413.41K

Crystal Adam

5 Apr 2021

Chief Medical Officer

Sold after exercise

4,121

$37.16

$153.13K

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