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C4 Therapeutics, Inc.

CCCC Net selling

CIK 0001662579 #3117 in the set updated 21 Sep 2026

Bought (12 mo)

$0.00

out of their own pocket, the only kind of buying there is

Sold (12 mo)

$22.20K

$0.00 on a plan · $0.00 straight out of an exercise

Sold at will

$22.20K

1 of 1 sales

Net

−$22.20K

−$22.20K against sales at will

By person

10 insiders · 2 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

REYNO LEONARD

Chief Medical Officer

—

$22.20K (1)

−$22.20K

372,406

0.3027%

$826.74K

+717.9%

Hirsch Andrew

President & CEO

—

1,074,934

0.8738%

$2.39M

+853.1%

Adams Kendra

Chief Financial Officer

—

385,098

0.3130%

$854.92K

+842.9%

Mahaney Paige

Chief Scientific Officer

—

336,910

0.2739%

$747.94K

—

Schick Kelly

Chief People Officer

—

299,881

0.2438%

$665.74K

+975.2%

Boyle Scott N

Chief Business Officer

—

298,801

0.2429%

$663.34K

+968.3%

Siegel Jolie

Chief Legal Officer

—

107,939

0.0877%

$239.62K

+100.5%

GROGAN DONNA ROY

Director

—

74,853

0.0608%

$166.17K

+182.8%

Anderson Kenneth Carl

Director

—

71,950

0.0585%

$159.73K

+124.1%

Mossler Mark

Chief Accounting Officer

—

71,916

0.0585%

$159.65K

+593.5%

Individual transactions

Insider

Date

Role

Action

Price

Amount

Anderson Kenneth Carl

1 Jun 2026

Director

Exercised, kept

1,070

$2.11

$2.26K

REYNO LEONARD

16 Jan 2026

Chief Medical Officer

Sell

10,000

$2.22

$22.20K

What was left out

Form 4 filings counted 27

Amendments (4/A) skipped 0

Filings about a different issuer 0

Unreadable filings 0

Joint filings 0

Sales on a Rule 10b5-1 plan 0

Sales straight out of an exercise 0

Sales at will 1

Transactions with no price 0

Shares from compensation/vesting 2,308,697

History held since 5 Oct 2020