Insider · CIK 0001856542
Tobin W Juvenal
Files at CSTL (CASTLE BIOSCIENCES INC). First filing Nov 5, 2024, latest Oct 1, 2026.
In brief
Tobin W Juvenal files SEC Form 4 as officer at CSTL (CASTLE BIOSCIENCES INC). Since Nov 5, 2024, Tobin W Juvenal has reported 0 open-market buys worth $0 and 15 open-market sells worth $3.0M, the latest filed on Oct 1, 2026.
A track record needs three past buys with six months of prices behind them; Tobin W Juvenal has 0, so none is measured yet.
The newest scored trade: sold $232k of CSTL on Sep 29, 2026, filed Oct 1, 2026, scored 28 (weak), under a 10b5-1 plan. In the last 12 months: 0 buys worth $0 and 12 sells worth $2.7M.
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 | $232k 6,577 shares | -11% | +92% from low-19% from high | |
| 27Weak | CASTLE BIOSCIENCES INC | $223k 6,600 shares | -10% | - | |
| 17Weak | CASTLE BIOSCIENCES INC | $57k 1,730 shares | -3% | +82% from low-23% from high | |
| 29Weak | CASTLE BIOSCIENCES INC | $317k 9,050 shares | -12% | +93% from low-19% from high | |
| 17Weak | CASTLE BIOSCIENCES INC | $51k 1,730 shares | -2% | +65% from low-30% from high | |
| 17Weak | CASTLE BIOSCIENCES INC | $50k 1,301 shares | -2% | +163% from low0% from high | |
| 34Weak | CASTLE BIOSCIENCES INC | $556k 19,040 shares | -19% | +91% from low-35% from high | |
| 33Weak | CASTLE BIOSCIENCES INC | $527k 20,863 shares | -19% | +73% from low-41% from high | |
| 53Moderate | CASTLE BIOSCIENCES INC | $495k 13,200 shares | -13% | +159% from low-5% from high | |
| 6Weak | CASTLE BIOSCIENCES INC | $167k 4,693 shares | -5% | +144% from low0% from high | |
| 0Weak | CASTLE BIOSCIENCES INC | $25k 700 shares | -1% | +139% from low0% from high | |
| 10Weak | CASTLE BIOSCIENCES INC | $25k 700 shares | -1% | +139% from low0% from high | |
| 18Weak | CASTLE BIOSCIENCES INC | $67k 2,230 shares | -3% | - | |
| 5Weak | CASTLE BIOSCIENCES INC | $125k 3,507 shares | -6% | - | |
| 5Weak | CASTLE BIOSCIENCES INC | $110k 3,100 shares | -5% | - |
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 |
|---|---|---|---|---|---|
| Sep 14, 2026 | CSTL Castle Biosciences, Inc. | 13,177 0.04% of outstanding | $441k | Sep 14, 2026 | $981k |
| Aug 25, 2026 | CSTL Castle Biosciences, Inc. | 22,500 0.07% of outstanding | $788k | Aug 25, 2026 | $668k |
| Jul 31, 2026 | CSTL Castle Biosciences, Inc. | 22,500 0.07% of outstanding | $630k | Jul 31, 2026 | none |
| Mar 12, 2026 | CSTL Castle Biosciences, Inc. | 20,863 0.07% of outstanding | $528k | Mar 12, 2026 | $495k |
| Dec 11, 2025 | CSTL CASTLE BIOSCIENCES, INC. | 13,200 0.05% of outstanding | $495k | Dec 11, 2025 | $192k |
| Nov 24, 2025 | CSTL CASTLE BIOSCIENCES INC | 1,301 0.00% of outstanding | $49k | Nov 24, 2025 | $192k |
| Nov 12, 2025 | CSTL CASTLE BIOSCIENCES INC | 5,393 0.02% of outstanding | $187k | Nov 11, 2025 | none |
| Jan 6, 2025 | CSTL CASTLE BIOSCIENCES INC | 2,230 0.01% of outstanding | $64k | Jan 6, 2025 | $234k |
| Nov 1, 2024 | CSTL CASTLE BIOSCIENCES INC | 12,000 0.04% of outstanding | $416k | Nov 1, 2024 | none |
Transactions
The newest 50 of 64 rows this insider has filed.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 29, 2026 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -5,543 | $35.50 | $197k | 53,041 | 12 d ago |
| Sep 30, 2026 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -1,034 | $34.20 | $35k | 52,007 | 12 d ago |
| Sep 14, 2026 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -3,306 | $32.32 | $107k | 61,878 | 27 d ago |
| Sep 15, 2026 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -3,294 | $35.14 | $116k | 58,584 | 27 d ago |
| Aug 31, 2026 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -1,730 | $32.81 | $57k | 65,184 | 41 d ago |
| Aug 25, 2026 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -9,050 | $35.04 | $317k | 66,914 | Aug 27, 2026 |
| Aug 17, 2026 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -1,730 | $29.59 | $51k | 75,964 | Aug 19, 2026 |
| Nov 24, 2025 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -1,301 | $38.39 | $50k | 77,694 | Aug 6, 2026 |
| Jul 31, 2026 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -8,149 | $28.84 | $235k | 89,886 | Aug 4, 2026 |
| Jul 31, 2026 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -7,270 | $29.58 | $215k | 82,616 | Aug 4, 2026 |
| Jul 31, 2026 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -1,891 | $30.26 | $57k | 80,725 | Aug 4, 2026 |
| Aug 3, 2026 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -1,730 | $28.25 | $49k | 78,995 | Aug 4, 2026 |
| May 21, 2026 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock | +11,210 | $3.38 | $38k | 98,035 | May 26, 2026 |
| May 21, 2026 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Stock option (right to buy)derivative | -11,210 | $0.00 | $0 | 0 | May 26, 2026 |
| Mar 12, 2026 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -20,863 | $25.24 | $527k | 86,825 | Mar 16, 2026 |
| Mar 3, 2026 | CSTL CASTLE BIOSCIENCES INC | FTax withholding Common Stock | -3,716 | $27.57 | $102k | 92,316 | Mar 5, 2026 |
| Mar 4, 2026 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock | +25,771 | - | - | 118,087 | Mar 5, 2026 |
| Mar 4, 2026 | CSTL CASTLE BIOSCIENCES INC | FTax withholding Common Stock | -10,399 | $28.17 | $293k | 107,688 | Mar 5, 2026 |
| Mar 3, 2026 | CSTL CASTLE BIOSCIENCES INC | AGrant or award Restricted Stock Unitsderivative | +48,367 | $0.00 | $0 | 48,367 | Mar 5, 2026 |
| Mar 4, 2026 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Restricted Stock Unitsderivative | -13,811 | $0.00 | $0 | 27,621 | Mar 5, 2026 |
| Mar 4, 2026 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Restricted Stock Unitsderivative | -11,960 | $0.00 | $0 | 35,878 | Mar 5, 2026 |
| Jan 12, 2026 | CSTL CASTLE BIOSCIENCES INC | AGrant or award Common Stock | +9,207 | $0.00 | $0 | 96,032 | Jan 14, 2026 |
| Jan 12, 2026 | CSTL CASTLE BIOSCIENCES INC | AGrant or award Performance-Based Stock Unitderivative | +9,207 | $0.00 | $0 | 9,207 | Jan 14, 2026 |
| Dec 11, 2025 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock | -13,200 | $37.48 | $495k | 86,825 | Dec 15, 2025 |
| Dec 9, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock | +15,961 | - | - | 102,786 | Dec 11, 2025 |
| Dec 9, 2025 | CSTL CASTLE BIOSCIENCES INC | FTax withholding Common Stock | -6,441 | $38.25 | $246k | 96,345 | Dec 11, 2025 |
| Dec 10, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock | +6,170 | - | - | 102,515 | Dec 11, 2025 |
| Dec 10, 2025 | CSTL CASTLE BIOSCIENCES INC | FTax withholding Common Stock | -2,490 | $38.02 | $95k | 100,025 | Dec 11, 2025 |
| Dec 9, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Restricted Stock Unitsderivative | -15,961 | $0.00 | $0 | 15,961 | 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 20, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock10b5-1 | +4,693 | $3.38 | $16k | 89,288 | Nov 24, 2025 |
| Nov 20, 2025 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -4,693 | $35.58 | $167k | 84,595 | Nov 24, 2025 |
| Nov 20, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Stock option (right to buy)derivative10b5-1 | -4,693 | $0.00 | $0 | 11,210 | Nov 24, 2025 |
| Nov 11, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock10b5-1 | +500 | $3.38 | $1,690 | 85,027 | Nov 14, 2025 |
| Nov 11, 2025 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -500 | $35.39 | $18k | 84,527 | Nov 14, 2025 |
| Nov 12, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock10b5-1 | +200 | $3.38 | $676 | 84,727 | Nov 14, 2025 |
| Nov 12, 2025 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -200 | $35.40 | $7,080 | 84,527 | Nov 14, 2025 |
| Nov 11, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Stock option (right to buy)derivative10b5-1 | -500 | $0.00 | $0 | 16,103 | Nov 14, 2025 |
| Nov 12, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Stock option (right to buy)derivative10b5-1 | -200 | $0.00 | $0 | 15,903 | Nov 14, 2025 |
| Nov 11, 2025 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -500 | $35.39 | $18k | 84,027 | Nov 13, 2025 |
| Nov 12, 2025 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -200 | $35.40 | $7,080 | 83,827 | Nov 13, 2025 |
| Aug 8, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock | +10,640 | $0.00 | $0 | 88,821 | Aug 12, 2025 |
| Aug 8, 2025 | CSTL CASTLE BIOSCIENCES INC | FTax withholding Common Stock | -4,294 | $19.36 | $83k | 84,527 | Aug 12, 2025 |
| Aug 8, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Performance-Based Stock Unitderivative | -10,640 | $0.00 | $0 | 0 | Aug 12, 2025 |
| Mar 4, 2025 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock | +13,811 | - | - | 83,754 | Mar 6, 2025 |
| Mar 4, 2025 | CSTL CASTLE BIOSCIENCES INC | FTax withholding Common Stock | -5,573 | $22.23 | $124k | 78,181 | 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 | -13,811 | $0.00 | $0 | 41,432 | Mar 6, 2025 |
| Jan 6, 2025 | CSTL CASTLE BIOSCIENCES INC | SOpen-market sale Common Stock10b5-1 | -2,230 | $30.00 | $67k | 69,943 | Jan 8, 2025 |
| Dec 9, 2024 | CSTL CASTLE BIOSCIENCES INC | MOption exercise Common Stock | +15,961 | - | - | 70,139 | Dec 11, 2024 |
Questions about Tobin W Juvenal
Answered from the filings on this page, as of the latest one.
Is Tobin W Juvenal buying or selling?
In the last 12 months Tobin W Juvenal reported 0 open-market buys worth $0 and 12 open-market sells worth $2.7M on SEC Form 4; the latest was sold $232k of CSTL on Sep 29, 2026. Grants, option exercises and tax withholding are not counted.
How did Tobin W Juvenal's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Tobin W Juvenal has 0.
Where does Tobin W Juvenal file Form 4?
Tobin W Juvenal has filed Form 4 at CSTL (CASTLE BIOSCIENCES INC) as Chief Commercial Officer. 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.