Insider · CIK 0001428666
Grant Yonehiro
Files at BOLT (Bolt Biotherapeutics, Inc.). First filing Sep 21, 2026, latest Sep 21, 2026.
Grant Yonehiro files SEC Form 4 as COO at BOLT (Bolt Biotherapeutics, Inc.). Since Sep 21, 2026, Grant Yonehiro has reported 0 open-market buys worth $0 and 1 open-market sell worth $44k, the latest filed on Sep 21, 2026.
A track record needs three past buys with six months of prices behind them; Grant Yonehiro has 0, so none is measured yet.
The newest scored trade: sold $44k of BOLT on Sep 16, 2026, filed Sep 21, 2026, scored 51 (moderate). In the last 12 months: 0 buys worth $0 and 1 sell worth $44k.
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 |
|---|---|---|---|---|---|
| 51Moderate | Bolt Biotherapeutics, Inc. | $44k 13,176 shares | -43% | - |
Transactions
Every row this insider has filed, 30 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 16, 2026 | BOLT Bolt Biotherapeutics, Inc. | SOpen-market sale Common Stock | -1,417 | $3.77 | $5,348 | 29,028 | 22 d ago |
| Sep 17, 2026 | BOLT Bolt Biotherapeutics, Inc. | SOpen-market sale Common Stock | -4,909 | $3.32 | $16k | 24,119 | 22 d ago |
| Sep 18, 2026 | BOLT Bolt Biotherapeutics, Inc. | SOpen-market sale Common Stock | -6,850 | $3.24 | $22k | 17,269 | 22 d ago |
| Jan 28, 2026 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +10,000 | $0.00 | $0 | 10,000 | Feb 4, 2026 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +3,214 | - | - | 3,214 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -3,214 | - | - | 0 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +660 | - | - | 660 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -660 | - | - | 0 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +822 | - | - | 822 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -822 | - | - | 0 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +1,653 | - | - | 1,653 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -1,653 | - | - | 0 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +4,642 | - | - | 4,642 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -4,642 | - | - | 0 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +2,142 | - | - | 2,142 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -2,142 | - | - | 0 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +4,999 | - | - | 4,999 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -4,999 | - | - | 0 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +9,499 | - | - | 9,499 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -9,499 | - | - | 0 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +11,399 | - | - | 11,399 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -11,399 | - | - | 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 | +7,749 | - | - | 7,749 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -7,749 | - | - | 0 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Employee Stock Option (Right to Buy)derivative | +17,499 | - | - | 17,499 | Dec 16, 2025 |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | DDisposition to issuer Employee Stock Option (Right to Buy)derivative | -17,499 | - | - | 0 | Dec 16, 2025 |
| Oct 22, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Common Stock | +30,000 | $0.00 | $0 | 38,918 | Oct 24, 2025 |
| May 1, 2025 | BOLT Bolt Biotherapeutics, Inc. | AGrant or award Stock Option (Right to Buy)derivative | +350,000 | $0.00 | $0 | 350,000 | May 5, 2025 |
Questions about Grant Yonehiro
Answered from the filings on this page, as of the latest one.
Is Grant Yonehiro buying or selling?
In the last 12 months Grant Yonehiro reported 0 open-market buys worth $0 and 1 open-market sell worth $44k on SEC Form 4; the latest was sold $44k of BOLT on Sep 16, 2026. Grants, option exercises and tax withholding are not counted.
How did Grant Yonehiro's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Grant Yonehiro has 0.
Where does Grant Yonehiro file Form 4?
Grant Yonehiro has filed Form 4 at BOLT (Bolt Biotherapeutics, Inc.) as Chief Operating 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.