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Company
▲ Purchases (0 ops.)
▼ Sales (397 ops.)
Latest filing published 07 Oct 2026 for Castle Biosciences INC, €17k. Read the official filing
Filing timeline
BuySaleDerek J. Maetzold
First 200 filings with a declared amount
Insider track record
Disclosed buys
0
Disclosed sells
397
Signal history
Derek J. Maetzold: trading record in brief
Derek J. Maetzold, listed as chief executive, appears in our data through filings on Castle Biosciences Inc shares, published by SEC (Form 4). Between 29 July 2019 and 5 October 2026, the trades on record add up to 435 filings.
The open-market record consists of 397 sales worth €33.7M, with no purchase. Other entries cover 4 share grants and 31 option exercises. 2026 to date brings no purchases and 123 sales.
The latest filing, published on 7 October 2026, reports an option exercise of €17k in Castle Biosciences Inc. The median gap between a trade and its publication by SEC (Form 4) is 2 days. For comparison, the SEC allows two business days to file a Form 4. Selling is not necessarily a view on the stock: liquidity needs and diversification are common motives. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.
Companies and markets linked to Derek J. Maetzold
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations298 total
8,165 shares@ US$2.39Common StockSEC:0001628280-26-065327:0
8,580 shares@ US$35.566Common StockSEC:0001628280-26-065327:1
3,198 shares@ US$35.566Common StockSEC:0001628280-26-065327:2
2,718 shares@ US$35.566Common StockSEC:0001628280-26-065327:3
8,580 shares@ US$35.3340.027% mcap1.5% of flowCommon StockSEC:0001628280-26-063221:1
3,198 shares@ US$35.3340.010% mcap0.6% of flowCommon StockSEC:0001628280-26-063221:2
2,718 shares@ US$35.3340.0087% mcap0.5% of flowCommon StockSEC:0001628280-26-063221:3
8,580 shares@ US$2.390.0019% mcap0.1% of flowCommon StockSEC:0001628280-26-063221:0
8,584 shares@ US$2.390.0018% mcap0.1% of flowCommon StockSEC:0001628280-26-062047:0
8,361 shares@ US$32.000.024% mcap1.3% of flowCommon StockSEC:0001628280-26-062047:1
2,656 shares@ US$32.000.0076% mcap0.4% of flowCommon StockSEC:0001628280-26-062047:3
83 shares@ US$32.780.0002% mcap0.0% of flowCommon StockSEC:0001628280-26-062047:5
3,124 shares@ US$32.000.0090% mcap0.5% of flowCommon StockSEC:0001628280-26-062047:2
223 shares@ US$32.780.0007% mcap0.0% of flowCommon StockSEC:0001628280-26-062047:4
71 shares@ US$32.780.0002% mcap0.0% of flowCommon StockSEC:0001628280-26-062047:6
12,428 shares@ US$2.390.0027% mcap0.1% of flowCommon StockSEC:0001628280-26-059816:0
11,472 shares@ US$33.140.034% mcap1.9% of flowCommon StockSEC:0001628280-26-059816:1
2,505 shares@ US$33.140.0074% mcap0.4% of flowCommon StockSEC:0001628280-26-059816:2
2,129 shares@ US$33.140.0063% mcap0.4% of flowCommon StockSEC:0001628280-26-059816:3
257 shares@ US$33.140.0008% mcap0.0% of flowCommon StockSEC:0001628280-26-059816:4
257 shares@ US$33.140.0008% mcap0.0% of flowCommon StockSEC:0001628280-26-059816:5
257 shares@ US$33.140.0008% mcap0.0% of flowCommon StockSEC:0001628280-26-059816:6
257 shares@ US$33.140.0008% mcap0.0% of flowCommon StockSEC:0001628280-26-059816:7
956 shares@ US$33.880.0029% mcap0.2% of flowCommon StockSEC:0001628280-26-059816:8
209 shares@ US$33.880.0006% mcap0.0% of flowCommon StockSEC:0001628280-26-059816:9
25 of 298 declarations
