William P. Quinn insider trades: Bolt Biotherapeutics (BOLT) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where William reports to the SEC
Open-market buys and sales
10 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Sep 18, 2026 | BOLT | ↓ Sell | 17,566 | $3.32 | $58K | Direct | Sep 21, 2026 (3d) |
| Jun 5, 2026 | BOLT | ↑ Buy | 637 | $3.88 | $2K | Direct | Sep 21, 2026 (108d) |
| Dec 5, 2025 | BOLT | ↑ Buy | 125 | $4.61 | $576 | Direct | Feb 4, 2026 (61d) |
| Jun 6, 2025 | BOLT | ↑ Buy | 125 | $5.49 | $687 | Direct | Oct 24, 2025 (140d) |
| Dec 16, 2024 | BOLT | ↑ Buy | 5,000 | $0.57 | $3K | Direct | May 5, 2025 (140d) |
| Dec 12, 2023 | BOLT | ↑ Buy | 11,829 | $0.95 | $11K | Direct | Dec 13, 2023 (1d) |
| Dec 8, 2021 | BOLT | ↑ Buy | 6,256 | $7.04 | $44K | Direct | Dec 9, 2021 (1d) |
| Feb 9, 2021 | BOLT | ↑ Buy | 1,200 | $20.00 | $24K | Direct | Feb 9, 2021 (0d) |
| Nov 29, 2019 | SNSS | ↑ Buy | 12,000 | $0.51 | $6K | Direct | Apr 2, 2020 (125d) |
| Dec 10, 2018 | SNSS | ↑ Buy | 40,000 | $0.47 | $19K | Direct | Dec 12, 2018 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other BOLT insiders
Open-market trades in the last 12 months
About William P. Quinn's insider trades
William P. Quinn is President, CEO and CFO at Bolt Biotherapeutics (BOLT). Since Dec 10, 2018, William has reported 9 open-market purchases worth $111K and 1 sale worth $58K on SEC Form 4. In the last 12 months: 2 buys ($3K) and 1 sale ($58K).
Their filings also include grants and awards (14 filings), shares returned to the company (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every BOLT insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.