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Planned insider sales
Notices (SEC Form 144) that executives and other insiders file before selling shares, and whether a sale was reported afterwards.
About this data
- What it is
- Before an executive, director or large owner sells restricted or control shares, they file a short notice with the SEC, called Form 144, saying how many shares they plan to sell, through which broker and roughly when. This feed lists those notices, and for each one shows whether a sale was reported afterwards on a Form 4 and how many days later.
- Who files it
- The person selling, or their broker, on the day the sale is placed. Electronic notices start in April 2023.
- How current
- We collect new notices throughout the day on SEC business days.
- Terms
- Form 144The notice an insider or other affiliate of a company files with the SEC before selling restricted or control shares, so the shares can be sold under Rule 144. The notice says how many shares, through which broker, and roughly when.10b5-1 planA Rule 10b5-1 trading plan lets an insider set up future sales in advance, on a schedule or at set prices, at a time when they do not hold inside information. A notice that gives a plan adoption date says the sale is made under such a plan.
- Worth knowing
- A notice is a plan, not a sale: the person may sell fewer shares, later, or not at all. The value is the one the filer typed, at a price they chose, not what the shares sell for. Many sales are routine, made to diversify or pay taxes, or under a 10b5-1 plan set up months earlier. A blank in the last column does not mean no sale: the person may not have to file a Form 4 (an ordinary affiliate does not), the sale may be recent, or the Form 4 may name a different spelling of the person. We match by the filer's number first and by name second. Information, not investment advice.
All of this comes from public filings.
Source and freshness · Information, not investment advice (disclaimer).
Form 144 notices per day, last 30 days
All notices Notices that give a 10b5-1 plan
By the day each notice was filed. A notice is a plan to sell, not a sale.
Latest notices of planned insider sales
Showing: ticker CSTL
| Filed | Insider | Company | Shares to sellA notice is a plan, not a sale. The person may sell fewer shares, sell later, or not sell at all, and the number of shares is what they expect to sell on the day they file. | ValueThe aggregate market value the filer typed on the notice: the shares times a price the filer chose. It is not what the shares will sell for. | PlanA Rule 10b5-1 trading plan lets an insider set up future sales in advance, on a schedule or at set prices, at a time when they do not hold inside information. A notice that gives a plan adoption date says the sale is made under such a plan. | Expected sale | Sale reportedInsiders who are officers, directors or hold more than 10% report their sales on a Form 4, within two business days. We look for the first Form 4 with an open-market sale by the same person in the same company within 90 days of the notice, and show how many days after the notice it was filed. A blank means we found none: the person may not have sold, may not have to file a Form 4, or the Form 4 may be one we do not have. | Notice |
|---|---|---|---|---|---|---|---|---|
| Nov 12, 2026 | Tobin Juvenal Officer | CSTL Castle Biosciences, Inc. | 3,195 | $112.0K | — | Nov 11, 2026 | Form 4 ↗ same day · 6,116 shares | Form 144 ↗ |
| Nov 9, 2026 | Tobin Juvenal Chief Commercial Officer | CSTL Castle Biosciences, Inc. | 13,154 | $452.2K | 10b5-1 | Nov 9, 2026 | Form 4 ↗ 3 days later · 6,116 shares | Form 144 ↗ |
| Nov 2, 2026 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 21,438 | $749.0K | 10b5-1 | Nov 2, 2026 | Form 4 ↗ 2 days later · 14,496 shares | Form 144 ↗ |
| Oct 13, 2026 | Tobin Juvenal Chief Commercial Officer | CSTL Castle Biosciences, Inc. | 13,154 | $430.9K | 10b5-1 | Oct 12, 2026 | Form 4 ↗ 15 days later · 3,288 shares | Form 144 ↗ |
| Oct 5, 2026 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 28,992 | $1.1M | 10b5-1 | Oct 5, 2026 | Form 4 ↗ 16 days later · 14,496 shares | Form 144 ↗ |
| Oct 1, 2026 | Kristen Oelschlager Officer | CSTL Castle Biosciences, Inc. | 4,153 | $147.6K | 10b5-1 | Oct 1, 2026 | — | Form 144 ↗ |
| Sep 14, 2026 | Tobin Juvenal Chief Commercial Officer | CSTL Castle Biosciences, Inc. | 13,177 | $440.6K | 10b5-1 | Sep 14, 2026 | Form 4 ↗ 2 days later · 6,600 shares | Form 144 ↗ |
| Sep 11, 2026 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 29,014 | $938.0K | 10b5-1 | Sep 11, 2026 | Form 4 ↗ 4 days later · 14,518 shares | Form 144 ↗ |
| Aug 25, 2026 | Tobin Juvenal Chief Commercial Officer | CSTL Castle Biosciences, Inc. | 22,500 | $787.5K | 10b5-1 | Aug 25, 2026 | Form 4 ↗ 2 days later · 9,050 shares | Form 144 ↗ |
| Aug 24, 2026 | Kristen M. Oelschlager Officer | CSTL Castle Biosciences, Inc. | 24,602 | $841.4K | — | Aug 24, 2026 | Form 4 ↗ 2 days later · 24,602 shares | Form 144 ↗ |
| Aug 14, 2026 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 25,792 | $764.0K | 10b5-1 | Aug 14, 2026 | Form 4 ↗ 4 days later · 7,232 shares | Form 144 ↗ |
| Aug 14, 2026 | Franklin M. Stokes Officer | CSTL Castle Biosciences, Inc. | 24,908 | $741.5K | — | Aug 14, 2026 | Form 4 ↗ 4 days later · 24,908 shares | Form 144 ↗ |
| Jul 31, 2026 | Tobin Juvenal Chief Commercial Officer | CSTL Castle Biosciences, Inc. | 22,500 | $630.0K | 10b5-1 | Jul 31, 2026 | Form 4 ↗ 4 days later · 19,040 shares | Form 144 ↗ |
| Jul 31, 2026 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 67,662 | $1.9M | 10b5-1 | Jul 31, 2026 | Form 4 ↗ 4 days later · 28,646 shares | Form 144 ↗ |
| Jul 1, 2026 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 23,844 | $589.2K | 10b5-1 | Jul 1, 2026 | Form 4 ↗ 5 days later · 9,836 shares | Form 144 ↗ |
| Jun 16, 2026 | Kristen Oelschlager Officer | CSTL Castle Biosciences, Inc. | 29,911 | $618.0K | 10b5-1 | Jun 16, 2026 | Form 4 ↗ 2 days later · 8,587 shares | Form 144 ↗ |
| Jun 1, 2026 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 14,008 | $293.7K | 10b5-1 | Jun 1, 2026 | Form 4 ↗ 2 days later · 9,836 shares | Form 144 ↗ |
| May 7, 2026 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 14,008 | $269.5K | 10b5-1 | May 7, 2026 | Form 4 ↗ 4 days later · 9,836 shares | Form 144 ↗ |
| Mar 26, 2026 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 18,180 | $449.0K | 10b5-1 | Mar 26, 2026 | Form 4 ↗ 4 days later · 4,172 shares | Form 144 ↗ |
| Mar 12, 2026 | Tobin Juvenal Chief Commercial Officer | CSTL Castle Biosciences, Inc. | 20,863 | $528.3K | 10b5-1 | Mar 12, 2026 | Form 4 ↗ 4 days later · 20,863 shares | Form 144 ↗ |
| Mar 11, 2026 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 94,204 | $2.5M | 10b5-1 | Mar 11, 2026 | Form 4 ↗ 2 days later · 44,125 shares | Form 144 ↗ |
| Mar 5, 2026 | Franklin Stokes Officer | CSTL Castle Biosciences, Inc. | 6,001 | $169.0K | 10b5-1 | Mar 5, 2026 | Form 4 ↗ 4 days later · 6,001 shares | Form 144 ↗ |
| Mar 5, 2026 | Gordon B. Cole Director | CSTL Castle Biosciences, Inc. | 7,403 | $210.7K | — | Mar 5, 2026 | Form 4 ↗ 4 days later · 7,403 shares | Form 144 ↗ |
| Mar 3, 2026 | Franklin Stokes Officer | CSTL Castle Biosciences, Inc. | 7,000 | $195.9K | 10b5-1 | Mar 3, 2026 | Form 4 ↗ 2 days later · 7,000 shares | Form 144 ↗ |
| Jan 5, 2026 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 12,051 | $470.0K | 10b5-1 | Jan 5, 2026 | Form 4 ↗ 2 days later · 4,017 shares | Form 144 ↗ |
| Dec 17, 2025 | Kristen M. Oelschlager Officer | CSTL Castle Biosciences, Inc. | 14,888 | $581.4K | — | Dec 17, 2025 | Form 4 ↗ 2 days later · 14,888 shares | Form 144 ↗ |
| Dec 15, 2025 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 33,685 | $1.3M | 10b5-1 | Dec 15, 2025 | Form 4 ↗ 2 days later · 32,346 shares | Form 144 ↗ |
| Dec 11, 2025 | Tobin Juvenal Officer | CSTL Castle Biosciences, Inc. | 13,200 | $494.7K | — | Dec 11, 2025 | Form 4 ↗ 4 days later · 13,200 shares | Form 144 ↗ |
| Dec 11, 2025 | Franklin M. Stokes Officer | CSTL Castle Biosciences, Inc. | 4,496 | $168.4K | — | Dec 11, 2025 | Form 4 ↗ 4 days later · 4,496 shares | Form 144 ↗ |
| Nov 25, 2025 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 10,712 | $427.7K | 10b5-1 | Nov 25, 2025 | Form 4 ↗ 1 day later · 5,115 shares | Form 144 ↗ |
| Nov 24, 2025 | Tobin Juvenal Officer | CSTL Castle Biosciences, Inc. | 1,301 | $49.3K | 10b5-1 | Nov 24, 2025 | Form 4 ↗ 21 days later · 13,200 shares | Form 144 ↗ |
| Nov 12, 2025 | Kristen M. Oelschlager Officer | CSTL Castle Biosciences, Inc. | 18,932 | $657.7K | 10b5-1 | Nov 11, 2025 | Form 4 ↗ 37 days later · 14,888 shares | Form 144 ↗ |
| Nov 12, 2025 | Tobin Juvenal Officer | CSTL Castle Biosciences, Inc. | 5,393 | $187.4K | 10b5-1 | Nov 11, 2025 | Form 4 ↗ 1 day later · 700 shares | Form 144 ↗ |
| Nov 12, 2025 | Franklin Stokes Officer | CSTL Castle Biosciences, Inc. | 5,388 | $187.2K | 10b5-1 | Nov 11, 2025 | Form 4 ↗ 33 days later · 4,496 shares | Form 144 ↗ |
| Nov 4, 2025 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 13,390 | $423.5K | 10b5-1 | Nov 4, 2025 | Form 4 ↗ 2 days later · 9,373 shares | Form 144 ↗ |
| Oct 2, 2025 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 4,017 | $89.3K | 10b5-1 | Oct 2, 2025 | Form 4 ↗ 4 days later · 1,339 shares | Form 144 ↗ |
| Aug 27, 2025 | Kristen M. Oelschlager Officer | CSTL Castle Biosciences, Inc. | 18,007 | $384.4K | — | Aug 27, 2025 | Form 4 ↗ 2 days later · 18,007 shares | Form 144 ↗ |
| Aug 27, 2025 | Kristen M. Oelschlager Officer | CSTL Castle Biosciences, Inc. | 25,355 | $541.3K | 10b5-1 | Aug 27, 2025 | Form 4 ↗ 2 days later · 18,007 shares | Form 144 ↗ |
| Aug 15, 2025 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 4,017 | $80.7K | 10b5-1 | Aug 15, 2025 | Form 4 ↗ 4 days later · 1,339 shares | Form 144 ↗ |
| Aug 13, 2025 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 43,019 | $835.0K | 10b5-1 | Aug 13, 2025 | Form 4 ↗ 2 days later · 43,019 shares | Form 144 ↗ |
| Jun 27, 2025 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 16,932 | $344.6K | 10b5-1 | Jun 27, 2025 | Form 4 ↗ 4 days later · 22,576 shares | Form 144 ↗ |
| Apr 8, 2025 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 16,932 | $314.9K | 10b5-1 | Apr 8, 2025 | Form 4 ↗ 2 days later · 5,644 shares | Form 144 ↗ |
| Mar 7, 2025 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 34,821 | $703.7K | 10b5-1 | Mar 7, 2025 | Form 4 ↗ 4 days later · 29,177 shares | Form 144 ↗ |
| Mar 4, 2025 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 5,687 | $126.4K | 10b5-1 | Mar 4, 2025 | Form 4 ↗ 2 days later · 5,687 shares | Form 144 ↗ |
| Feb 5, 2025 | Daniel Bradbury Officer | CSTL Castle Biosciences, Inc. | 7,867 | $221.2K | 10b5-1 | Feb 5, 2025 | Form 4 ↗ 2 days later · 7,867 shares | Form 144 ↗ |
| Jan 6, 2025 | Tobin Juvenal Officer | CSTL Castle Biosciences, Inc. | 2,230 | $63.8K | 10b5-1 | Jan 6, 2025 | Form 4 ↗ 2 days later · 2,230 shares | Form 144 ↗ |
| Dec 13, 2024 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 48,303 | $1.4M | 10b5-1 | Dec 13, 2024 | Form 4 ↗ 4 days later · 26,123 shares | Form 144 ↗ |
| Dec 3, 2024 | Daniel Bradbury Officer | CSTL Castle Biosciences, Inc. | 15,734 | $484.3K | 10b5-1 | Dec 3, 2024 | Form 4 ↗ 2 days later · 7,867 shares | Form 144 ↗ |
| Nov 14, 2024 | Frank Stokes Officer | CSTL Castle Biosciences, Inc. | 6,923 | $217.9K | 10b5-1 | Nov 15, 2024 | Form 4 ↗ 5 days later · 6,923 shares | Form 144 ↗ |
| Nov 4, 2024 | Derek Maetzold Officer | CSTL Castle Biosciences, Inc. | 15,381 | $517.4K | 10b5-1 | Nov 4, 2024 | Form 4 ↗ 2 days later · 5,127 shares | Form 144 ↗ |
The newest 50 items, most recent first. Every row links to the notice on the SEC's site, and to the Form 4 when we found one. Updated Nov 15, 2026, 6:47 PM EST.
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