Insider · CIK 0001782815
Frank Stokes
Files at XGN (EXAGEN INC.), CSTL (CASTLE BIOSCIENCES INC). First filing Nov 19, 2024, latest Mar 9, 2026.
Frank Stokes files SEC Form 4 as CFO and director at CSTL (CASTLE BIOSCIENCES INC), and also at XGN (EXAGEN INC.). Since Nov 19, 2024, Frank Stokes has reported 0 open-market buys worth $0 and 6 open-market sells worth $1.1M, the latest filed on Mar 9, 2026.
A track record needs three past buys with six months of prices behind them; Frank Stokes has 0, so none is measured yet.
The newest scored trade: sold $168k of CSTL on Mar 5, 2026, filed Mar 9, 2026, scored 28 (weak), under a 10b5-1 plan. In the last 12 months: 0 buys worth $0 and 4 sells worth $717k.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
CSTL: CASTLE BIOSCIENCES INC
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 28Weak | CASTLE BIOSCIENCES INC | $168k 6,001 shares | -9% | +91% from low-35% from high | |
| 19Weak | CASTLE BIOSCIENCES INC | $192k 7,000 shares | -12% | +88% from low-36% from high | |
| 48Moderate | CASTLE BIOSCIENCES INC | $168k 4,496 shares | -8% | +159% from low-5% from high | |
| 34Weak | CASTLE BIOSCIENCES INC | $189k 5,388 shares | -11% | +139% from low0% from high | |
| 27Weak | CASTLE BIOSCIENCES INC | $215k 8,046 shares | -19% | - | |
| 34Weak | CASTLE BIOSCIENCES INC | $207k 6,923 shares | -18% | - |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Mar 5, 2026 | CSTL CASTLE BIOSCIENCES, INC. | 6,001 0.02% of outstanding | $169k | Mar 5, 2026 | $360k |
| Mar 3, 2026 | CSTL CASTLE BIOSCIENCES INC | 7,000 0.02% of outstanding | $196k | Mar 3, 2026 | $168k |
| Dec 11, 2025 | CSTL CASTLE BIOSCIENCES, INC. | 4,496 0.02% of outstanding | $168k | Dec 11, 2025 | $189k |
| Nov 12, 2025 | CSTL CASTLE BIOSCIENCES INC | 5,388 0.02% of outstanding | $187k | Nov 11, 2025 | none |
| Nov 14, 2024 | CSTL CASTLE BIOSCIENCES INC | 6,923 0.02% of outstanding | $218k | Nov 15, 2024 | $257k |
Transactions
Every row this insider has filed, 42 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jun 9, 2026 | XGN EXAGEN INC. | AGrant or award Stock Option(right to buy)derivative | +37,500 | $0.00 | $0 | 112,500 | Jun 22, 2026 |
| Mar 5, 2026 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -6,001 | $27.98 | $168k | 60,085 | Mar 9, 2026 |
| Mar 3, 2026 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -5,300 | $27.32 | $145k | 54,183 | Mar 5, 2026 |
| Mar 3, 2026 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -1,700 | $27.81 | $47k | 52,483 | Mar 5, 2026 |
| Mar 3, 2026 | CSTL CASTLE BIOSCIENCES INC | FTax withholding Common Stock10b5-1 | -3,611 | $27.57 | $100k | 48,872 | Mar 5, 2026 |
| Mar 4, 2026 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock10b5-1 | +24,146 | - | - | 73,018 | Mar 5, 2026 |
| Mar 4, 2026 | CSTL CASTLE BIOSCIENCES INC | FTax withholding Common Stock10b5-1 | -10,732 | $28.17 | $302k | 62,286 | Mar 5, 2026 |
| Mar 4, 2026 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock10b5-1 | +3,800 | $3.38 | $13k | 66,086 | Mar 5, 2026 |
| Mar 3, 2026 | CSTL CASTLE BIOSCIENCES INC | AGrant or award Restricted Stock Unitsderivative10b5-1 | +48,367 | $0.00 | $0 | 48,367 | Mar 5, 2026 |
| Mar 4, 2026 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Restricted Stock Unitsderivative10b5-1 | -12,186 | $0.00 | $0 | 24,372 | Mar 5, 2026 |
| Mar 4, 2026 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Restricted Stock Unitsderivative10b5-1 | -11,960 | $0.00 | $0 | 35,878 | Mar 5, 2026 |
| Mar 4, 2026 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Stock option (right to buy)derivative10b5-1 | -3,800 | $0.00 | $0 | 14,912 | Mar 5, 2026 |
| Jan 12, 2026 | CSTL CASTLE BIOSCIENCES INC | AGrant or award Common Stock | +8,124 | $0.00 | $0 | 58,450 | Jan 14, 2026 |
| Jan 12, 2026 | CSTL CASTLE BIOSCIENCES INC | AGrant or award Performance-Based Stock Unitderivative | +8,124 | $0.00 | $0 | 8,124 | Jan 14, 2026 |
| Dec 11, 2025 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock | -4,496 | $37.45 | $168k | 50,326 | Dec 15, 2025 |
| Dec 9, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock | +14,616 | - | - | 57,944 | Dec 11, 2025 |
| Dec 9, 2025 | CSTL CASTLE BIOSCIENCES INC | FTax withholding Common Stock | -6,534 | $38.25 | $250k | 51,410 | Dec 11, 2025 |
| Dec 10, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock | +6,170 | - | - | 57,580 | Dec 11, 2025 |
| Dec 10, 2025 | CSTL CASTLE BIOSCIENCES INC | FTax withholding Common Stock | -2,758 | $38.02 | $105k | 54,822 | Dec 11, 2025 |
| Dec 9, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Restricted Stock Unitsderivative | -14,616 | $0.00 | $0 | 14,617 | Dec 11, 2025 |
| Dec 10, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Restricted Stock Unitsderivative | -6,170 | $0.00 | $0 | 0 | Dec 11, 2025 |
| Nov 11, 2025 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -5,388 | $35.08 | $189k | 43,328 | Nov 13, 2025 |
| Aug 8, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock | +9,744 | $0.00 | $0 | 53,072 | Aug 12, 2025 |
| Aug 8, 2025 | CSTL CASTLE BIOSCIENCES INC | FTax withholding Common Stock | -4,356 | $19.36 | $84k | 48,716 | Aug 12, 2025 |
| Aug 8, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Performance-Based Stock Unitderivative | -9,744 | $0.00 | $0 | 0 | Aug 12, 2025 |
| Jun 10, 2025 | XGN EXAGEN INC. | AGrant or award Stock Option(right to buy)derivative | +9,000 | $0.00 | $0 | 9,000 | Jun 12, 2025 |
| Mar 4, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock | +12,186 | - | - | 48,776 | Mar 6, 2025 |
| Mar 4, 2025 | CSTL CASTLE BIOSCIENCES INC | FTax withholding Common Stock | -5,448 | $22.23 | $121k | 43,328 | Mar 6, 2025 |
| Mar 4, 2025 | CSTL CASTLE BIOSCIENCES INC | AGrant or award Restricted Stock Unitsderivative | +47,838 | $0.00 | $0 | 47,838 | Mar 6, 2025 |
| Mar 4, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Restricted Stock Unitsderivative | -12,186 | $0.00 | $0 | 36,558 | Mar 6, 2025 |
| Feb 20, 2025 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -8,046 | $26.70 | $215k | 35,319 | Feb 24, 2025 |
| Dec 9, 2024 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock | +14,617 | - | - | 45,440 | Dec 11, 2024 |
| Dec 9, 2024 | CSTL CASTLE BIOSCIENCES INC | FTax withholding Common Stock | -6,571 | $30.91 | $203k | 38,869 | Dec 11, 2024 |
| Dec 10, 2024 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock | +2,000 | - | - | 40,869 | Dec 11, 2024 |
| Dec 10, 2024 | CSTL CASTLE BIOSCIENCES INC | FTax withholding Common Stock | -900 | $29.63 | $27k | 39,969 | Dec 11, 2024 |
| Dec 10, 2024 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock | +6,169 | - | - | 46,138 | Dec 11, 2024 |
| Dec 10, 2024 | CSTL CASTLE BIOSCIENCES INC | FTax withholding Common Stock | -2,773 | $29.63 | $82k | 43,365 | Dec 11, 2024 |
| Dec 9, 2024 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Restricted Stock Unitsderivative | -14,617 | $0.00 | $0 | 29,233 | Dec 11, 2024 |
| Dec 10, 2024 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Restricted Stock Unitsderivative | -2,000 | $0.00 | $0 | 0 | Dec 11, 2024 |
| Dec 10, 2024 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Restricted Stock Unitsderivative | -6,169 | $0.00 | $0 | 6,170 | Dec 11, 2024 |
| Nov 15, 2024 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -6,123 | $29.87 | $183k | 31,623 | Nov 19, 2024 |
| Nov 15, 2024 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -800 | $30.40 | $24k | 30,823 | Nov 19, 2024 |
Questions about Frank Stokes
Answered from the filings on this page, as of the latest one.
Is Frank Stokes buying or selling?
In the last 12 months Frank Stokes reported 0 open-market buys worth $0 and 4 open-market sells worth $717k on SEC Form 4; the latest was sold $168k of CSTL on Mar 5, 2026. Grants, option exercises and tax withholding are not counted.
How did Frank Stokes's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Frank Stokes has 0.
Where does Frank Stokes file Form 4?
Frank Stokes has filed Form 4 at CSTL (CASTLE BIOSCIENCES INC) as Chief Financial Officer; XGN (EXAGEN INC.). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.