CASTLE BIOSCIENCES INC

By person

19 insiders · 2,375 transactions

24.0×

Derek J. Maetzold holds 24.0 times base salary in stock. $18.08M 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 $35.14, the price Common Stock was last bought or sold at on the open market here, on 15 Sep 2026.

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

BRADBURY DANIEL

Director

—

$160.28M (453)

−$160.28M

588,918

1.93%

$20.70M

+6.4%

MAETZOLD DEREK J

Pres. & Chief Exec. Officer

—

$95.16M (1594)

−$95.16M

514,505

1.68%

$18.08M

−75.2%

KABAKOFF DAVID S

Director

$1.00M (1)

$64.36M (38)

−$63.36M

503,577

1.65%

$17.70M

—

Cook Joseph C. III

Director

$5.36M (2)

$53.23M (136)

−$47.87M

125,124

0.4096%

$4.40M

—

Sofinnova HealthQuest Partners, L.P. entity

10% owner

$1.00M (1)

$13.28M (8)

−$12.28M

1,433,577

4.69%

$50.38M

—

Spiess Bernhard E.

Chief Business Officer

—

$8.59M (12)

−$8.59M

14,696

0.0481%

$516.45K

−87.9%

Stokes Frank

Chief Financial Officer

—

$8.43M (34) scheduled

−$8.43M

35,177

0.1151%

$1.24M

+290.3%

Oelschlager Kristen M

Chief Operating Officer

—

$5.16M (24) scheduled

−$5.16M

158,654

0.5193%

$5.58M

−14.6%

MGC Venture Partners 2013 GP, LLC entity

10% owner

$5.00M (3)

$1.21M (5)

+$3.79M

134,700

0.4409%

$4.73M

—

Juvenal Tobin W

Chief Commercial Officer

—

$3.52M (19) scheduled

−$3.52M

60,814

0.1991%

$2.14M

+562.8%

Anderson Bonnie H

Director

—

$601.40K (7)

−$601.40K

45,353

0.1485%

$1.59M

−4.0%

Aspinall Mara G.

Director

$50.00K (1)

$494.80K (4)

−$444.80K

44,139

0.1445%

$1.55M

+86.8%

Cole G Bradley

Director

—

$210.73K (2) scheduled

−$210.73K

32,976

0.1079%

$1.16M

—

Goldberg Ellen

Director

$69.00K (2)

—

+$69.00K

40,921

0.1339%

$1.44M

—

Olson Tiffany

Director

$49.75K (3)

—

+$49.75K

39,573

0.1295%

$1.39M

—

Caple Kim

Director

—

36,121

0.1182%

$1.27M

—

Harrison Miles

Director

—

35,631

0.1166%

$1.25M

—

Cotton Rodney

Director

—

32,998

0.1080%

$1.16M

—

Monzon Federico A.

Chief Medical Officer

—

31,459

0.1030%

$1.11M

+174.5%

By person

Individual transactions

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