Derek J. Maetzold
Pres. & Chief Exec. Officer at Castle Biosciences Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: Castle Biosciences Inc., 3 years.
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
Castle Biosciences Inc. May 22, 202593.3%
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.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Nov 2, 2026 | Castle Biosciences Inc. | Open-market sale | −7,555 | $36.01 | $272,018 |
| Nov 2, 2026 | Castle Biosciences Inc. | Open-market sale | −2,816 | $36.01 | $101,390 |
| Nov 2, 2026 | Castle Biosciences Inc. | Open-market sale | −2,393 | $36.01 | $86,160 |
| Nov 2, 2026 | Castle Biosciences Inc. | Open-market sale | −1,025 | $36.81 | $37,734 |
| Nov 2, 2026 | Castle Biosciences Inc. | Open-market sale | −382 | $36.81 | $14,063 |
| Nov 2, 2026 | Castle Biosciences Inc. | Open-market sale | −325 | $36.81 | $11,965 |
| Oct 19, 2026 | Castle Biosciences Inc. | Open-market sale | −8,580 | $31.91 | $273,788 |
| Oct 19, 2026 | Castle Biosciences Inc. | Open-market sale | −3,198 | $31.91 | $102,048 |
| Oct 19, 2026 | Castle Biosciences Inc. | Open-market sale | −2,718 | $31.91 | $86,731 |
| Oct 5, 2026 | Castle Biosciences Inc. | Option exercise | +8,165 | $2.39 | $19,514 |
| Oct 5, 2026 | Castle Biosciences Inc. | Open-market sale | −8,580 | $35.57 | $305,156 |
| Oct 5, 2026 | Castle Biosciences Inc. | Open-market sale | −3,198 | $35.57 | $113,740 |
| Oct 5, 2026 | Castle Biosciences Inc. | Open-market sale | −2,718 | $35.57 | $96,668 |
| Sep 21, 2026 | Castle Biosciences Inc. | Option exercise | +8,580 | $2.39 | $20,506 |
| Sep 21, 2026 | Castle Biosciences Inc. | Open-market sale | −8,580 | $35.33 | $303,131 |
Questions about Derek J. Maetzold
What boards is Derek J. Maetzold on?
Derek J. Maetzold sits on the board of Castle Biosciences Inc.
How long has Derek J. Maetzold served on boards?
Our records show at least 4 years of board service across 1 board, the earliest from 2023.
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