Insider · CIK 0001724190
William P. Quinn
Files at BOLT (Bolt Biotherapeutics, Inc.). First filing Dec 13, 2023, latest Sep 21, 2026.
In brief
William P. Quinn files SEC Form 4 as CEO, CFO, president and director at BOLT (Bolt Biotherapeutics, Inc.). Since Dec 13, 2023, William P. Quinn has reported 5 open-market buys worth $18k and 1 open-market sell worth $58k, the latest filed on Sep 21, 2026.
After William P. Quinn's past buys, the stock trailed the S&P 500 by a median 40.7% over six months (n = 3), and 0% of those buys were ahead of the index at six months. InsiderTell labels that a negative record.
The newest scored trade: bought $2,469 of BOLT on Jun 5, 2026, filed Sep 21, 2026, scored 39 (weak). In the last 12 months: 3 buys worth $3,731 and 1 sell worth $58k.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
BOLT: Bolt Biotherapeutics, 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 |
|---|---|---|---|---|---|
| 39Weak | Bolt Biotherapeutics, Inc. | $2,469 637 shares | +28% | - | |
| 57Moderate | Bolt Biotherapeutics, Inc. | $58k 17,566 shares | -41% | - | |
| 44Moderate | Bolt Biotherapeutics, Inc. | $576 125 shares | +6% | +20% from low-56% from high | |
| 44Moderate | Bolt Biotherapeutics, Inc. | $687 125 shares | +6% | +10% from low-52% from high | |
| 36Weak | Bolt Biotherapeutics, Inc. | $2,835 5,000 shares | +14% | - | |
| 36Weak | BOLTbuy Bolt Biotherapeutics, Inc. | $11k 11,829 shares | +48% | +29% from low-38% from high |
Transactions
Every row this insider has filed, 31 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jun 5, 2026 | BOLT Bolt Biotherapeutics, Inc. | POpen-market purchase Common Stock | +637 | $3.88 | $2,469 | 2,950 | 22 d ago |
| Sep 16, 2026 | BOLT Bolt Biotherapeutics, Inc. | SOpen-market sale Common Stock | -1,889 | $3.77 | $7,129 | 41,061 | 22 d ago |
| Sep 17, 2026 | BOLT Bolt Biotherapeutics, Inc. | SOpen-market sale Common Stock | -6,545 | $3.32 | $22k | 34,516 | 22 d ago |
| Sep 18, 2026 | BOLT Bolt Biotherapeutics, Inc. | SOpen-market sale Common Stock | -9,132 | $3.24 | $30k | 25,384 | 22 d ago |
| Dec 5, 2025 | BOLT Bolt Biotherapeutics, Inc. | POpen-market purchase Common Stock | +125 | $4.61 | $576 | 2,313 | Feb 4, 2026 |
| Jan 28, 2026 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +20,000 | $0.00 | $0 | 20,000 | Feb 4, 2026 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +7,614 | - | - | 7,614 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -7,614 | - | - | 0 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +3,927 | - | - | 3,927 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -3,927 | - | - | 0 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +5,000 | - | - | 5,000 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -5,000 | - | - | 0 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +10,499 | - | - | 10,499 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -10,499 | - | - | 0 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +12,499 | - | - | 12,499 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -12,499 | - | - | 0 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +11,749 | - | - | 11,749 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -11,749 | - | - | 0 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +21,999 | - | - | 21,999 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -21,999 | - | - | 0 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +34,999 | - | - | 34,999 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -34,999 | - | - | 0 | Dec 16, 2025 |
| Jun 6, 2025 | BOLT Bolt Biotherapeutics, Inc. | POpen-market purchase Common Stock | +125 | $5.49 | $687 | 2,188 | Oct 24, 2025 |
| Oct 22, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Common Stock | +40,000 | $0.00 | $0 | 42,188 | Oct 24, 2025 |
| Dec 16, 2024 | BOLT Bolt Biotherapeutics, Inc. | POpen-market purchase Common Stock | +2,500 | $0.50 | $1,241 | 41,272 | May 5, 2025 |
| Jun 6, 2024 | BOLT Bolt Biotherapeutics, Inc. | POpen-market purchase Common Stock | +2,500 | $0.64 | $1,594 | 38,772 | May 5, 2025 |
| May 1, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Stock Option (Right to Buy)derivative | +700,000 | $0.00 | $0 | 700,000 | May 5, 2025 |
| Mar 4, 2024 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Stock Option (Right to Buy)derivative | +235,000 | $0.00 | $0 | 235,000 | Mar 6, 2024 |
| Jun 6, 2023 | BOLT Bolt Biotherapeutics, Inc. | POpen-market purchase Common Stock | +1,829 | $1.18 | $2,161 | 26,272 | Dec 13, 2023 |
| Dec 6, 2023 | BOLT Bolt Biotherapeutics, Inc. | POpen-market purchase Common Stock | +2,500 | $0.78 | $1,955 | 28,772 | Dec 13, 2023 |
| Dec 12, 2023 | BOLT Bolt Biotherapeutics, Inc. | POpen-market purchase Common Stock | +7,500 | $0.95 | $7,125 | 36,272 | Dec 13, 2023 |
Questions about William P. Quinn
Answered from the filings on this page, as of the latest one.
Is William P. Quinn buying or selling?
In the last 12 months William P. Quinn reported 3 open-market buys worth $3,731 and 1 open-market sell worth $58k on SEC Form 4; the latest was bought $2,469 of BOLT on Jun 5, 2026. Grants, option exercises and tax withholding are not counted.
How did William P. Quinn's past buys perform?
Measured from the first close after each filing, the stock trailed the S&P 500 by a median 40.7% over six months across 3 past buys, with 0% ahead of the index. Past results describe what happened; they do not predict the next trade.
Where does William P. Quinn file Form 4?
William P. Quinn has filed Form 4 at BOLT (Bolt Biotherapeutics, Inc.) as Chief Financial 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.