CASTLE BIOSCIENCES INC (CSTL) insider trading

By person

19 insiders · 2,398 transactions

25.2×

Derek J. Maetzold holds 25.2 times base salary in stock. $18.94M of shares against $751.35K in salary for 2025.

Salary from the company's own proxy. The shares are what Derek J. Maetzold last reported holding, valued at $36.81, the price Common Stock was last bought or sold at on the open market here, on 2 Nov 2026.

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

Derek J Maetzold

Pres. & Chief Exec. Officer

—

$97.18M (1609)

−$97.18M

473,266

1.55%

$17.42M

−77.2%

David S Kabakoff

Director

$1.00M (1)

$64.36M (38)

−$63.36M

503,577

1.65%

$18.54M

—

Joseph C. Cook III

Director

$5.36M (2)

$53.23M (136)

−$47.87M

125,124

0.4096%

$4.61M

—

Daniel Bradbury

Director

—

$39.97M (453)

−$39.97M

588,918

1.93%

$21.68M

+6.4%

Sofinnova HealthQuest Partners, L.P. entity

10% owner

$1.00M (1)

$13.28M (8)

−$12.28M

1,433,577

4.69%

$52.78M

—

Bernhard E. Spiess

Chief Business Officer

—

$8.59M (12)

−$8.59M

14,696

0.0481%

$541.02K

−87.9%

Frank Stokes

Chief Financial Officer

—

$8.43M (34) scheduled

−$8.43M

35,177

0.1151%

$1.30M

+290.3%

Kristen M Oelschlager

Chief Operating Officer

—

$5.31M (26) scheduled

−$5.31M

158,654

0.5193%

$5.84M

−14.6%

Tobin W Juvenal

Chief Commercial Officer

—

$4.21M (25) scheduled

−$4.21M

41,083

0.1345%

$1.51M

+347.7%

MGC Venture Partners 2013 GP, LLC entity

10% owner

$5.00M (3)

$1.21M (5)

+$3.79M

134,700

0.4409%

$4.96M

—

Bonnie H Anderson

Director

—

$601.40K (7)

−$601.40K

45,353

0.1485%

$1.67M

−4.0%

Mara G. Aspinall

Director

$50.00K (1)

$494.80K (4)

−$444.80K

44,139

0.1445%

$1.62M

+86.8%

G Bradley Cole

Director

—

$210.73K (2) scheduled

−$210.73K

32,976

0.1079%

$1.21M

—

Ellen Goldberg

Director

$69.00K (2)

—

+$69.00K

40,921

0.1339%

$1.51M

—

Tiffany Olson

Director

$49.75K (3)

—

+$49.75K

39,573

0.1295%

$1.46M

—

Kim Caple

Director

—

36,121

0.1182%

$1.33M

—

Miles Harrison

Director

—

35,631

0.1166%

$1.31M

—

Rodney Cotton

Director

—

32,998

0.1080%

$1.21M

—

Federico A. Monzon

Chief Medical Officer

—

31,459

0.1030%

$1.16M

+174.5%

CASTLE BIOSCIENCES INC

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