C4 Therapeutics Inc.

Last updated September 27, 2026

Organization details

Legal name
C4 Therapeutics Inc.
Ownership
Public
Status
Active
Headquarters country
United States
Ticker symbol
CCCC
Primary stock exchange
Nasdaq

Identifiers

SEC CIK
0001662579

Board of directors

Chief executives

Andrew Hirsch · President & CEO
Dates unknown

Board connections

6 of this board's directors also sit on 9 other boards.

Network of C4 Therapeutics Inc.'s board connections AnaptysBio Inc. AnaptysBio Inc. Artiva Biotherapeutics Inc. Artiva Biotherapeutics... Cardinal Health Inc. Cardinal Health Inc. Editas Medicine Inc. Editas Medicine Inc. ImageneBio Inc. ImageneBio Inc. MBX Biosciences Inc. MBX Biosciences Inc. Oric Pharmaceuticals Inc. Oric Pharmaceuticals I... Yarrow Bioscience Inc. Yarrow Bioscience Inc. enGene Therapeutics Inc. enGene Therapeutics In... Andrew Hirsch Andrew Hirsch Bruce Downey Bruce Downey Laura Bessen Laura Bessen Owen Hughes Owen Hughes Ronald Harold Wilfred Cooper Ronald Harold Wilfre... Steven L. Hoerter Steven L. Hoerter C4 Therapeutics Inc.
Shared director Other board Same sector

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months
$0
0 purchases by 0 insiders
Sold, last 12 months
$22,200
1 sale by 1 insider
Date Insider Transaction Shares Price Value
Jul 10, 2026 REYNO LEONARD Officer (Chief Medical Officer) Option exercise +15,325 — —
Jul 10, 2026 REYNO LEONARD Officer (Chief Medical Officer) Shares withheld for tax −7,397 $4.06 $30,032
Jul 1, 2026 Kenneth Carl Anderson Director Grant or award +2,650 $4.34 $11,501
Jul 1, 2026 Donna Roy Grogan Director Grant or award +3,341 $4.34 $14,500
Jun 1, 2026 Kenneth Carl Anderson Director Option exercise +1,070 $2.11 $2,258
Apr 1, 2026 Kenneth Carl Anderson Director Grant or award +4,259 $2.70 $11,499
Apr 1, 2026 Donna Roy Grogan Director Grant or award +5,370 $2.70 $14,499
Feb 15, 2026 Andrew Hirsch Director, Officer (President & CEO) Option exercise +20,400 — —
Feb 15, 2026 Andrew Hirsch Director, Officer (President & CEO) Shares withheld for tax −9,057 $1.89 $17,118
Feb 14, 2026 Mahaney Paige Officer (Chief Scientific Officer) Option exercise +7,050 — —
Feb 14, 2026 Andrew Hirsch Director, Officer (President & CEO) Option exercise +81,725 — —
Feb 14, 2026 REYNO LEONARD Officer (Chief Medical Officer) Option exercise +30,950 — —
Feb 14, 2026 Mossler Mark Officer (Chief Accounting Officer) Option exercise +9,420 — —
Feb 14, 2026 Mahaney Paige Officer (Chief Scientific Officer) Shares withheld for tax −2,446 $1.89 $4,623
Feb 14, 2026 Andrew Hirsch Director, Officer (President & CEO) Shares withheld for tax −39,154 $1.89 $74,001

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