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MAETZOLD DEREK J
Pres. & Chief Exec. OfficerDirectorCIK 0001239501
Total Volume
$14.1M
36 filings
Purchases
$0
0 buy txns
Sales
$11.4M
147 sell txns
Net Activity
-$11.4M
net sold
Largest Purchase
No open-market purchases in the recent filings.
Profile
- Filings
- 36
- Buy transactions
- 0
- Sell transactions
- 147
- Companies
- 1
- Active
- 2025–2026
MAETZOLD DEREK J, Pres. & Chief Exec. Officer, Director, accounts for 36 disclosed filings worth $14.1M, all concentrated in CASTLE BIOSCIENCES INC (CSTL), active 2025–2026. The record is heavily weighted toward selling, with $0 in purchases against $11.4M in sales. Data is sourced from official SEC Form 3, 4, and 5 filings.
Associated Companies
Trading History
36 loaded
| Nov 4 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $523.3K |
| Oct 21 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $462.6K |
| Oct 7 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $515.6K |
| Sep 23 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $512.2K |
| Sep 15 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $464.9K |
| Sep 1 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $616.1K |
| Aug 18 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $217.1K |
| Aug 6 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $1.2M |
| Aug 4 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $867.5K |
| Jul 29 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $237.7K |
| Jul 16 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $95.6K |
| Jul 6 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $238.9K |
| Jun 17 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $86.2K |
| Jun 3 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $205.1K |
| Apr 23 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $104.7K |
| Apr 8 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $246.2K |
| Mar 30 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $106.6K |
| Mar 19 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $500.1K |
| Mar 13 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $1.1M |
| Mar 5 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Exercise | $1.0M |
| Feb 5 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $158.8K |
| Jan 22 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $160.7K |
| Jan 14 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Insider | Grant | $0 |
| Dec 17 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $1.3M |
| Dec 11 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Exercise | $735.0K |
| Dec 8 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $53.6K |
| Dec 4 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $105.1K |
| Nov 26 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $204.9K |
| Nov 20 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $91.1K |
| Oct 23 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $30.0K |
| Oct 6 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $30.2K |
| Sep 19 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $29.4K |
| Sep 4 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $32.0K |
| Aug 19 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $26.8K |
| Aug 15 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Sell | $839.0K |
| Aug 12 | CSTL CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Pres. & Chief Exec. Officer, Director | Exercise | $464.1K |
36 filings