BOLT · Insider trading · 13F holders · Congress trades
Bolt Biotherapeutics, Inc. (BOLT)
Who is buying and selling BOLT: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 6
- Insider buys, 90 days
- $4K
- Insider sales, 90 days
- $128K
- Congress trades, 12 months
- 0
BOLT at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 3 BOLT insiders filed 2 open-market purchases worth $4K and 3 sales worth $128K on SEC Form 4.
- 6 13F filers hold BOLT among their 50 largest positions, worth $1.2M combined. The biggest bets by portfolio weight are Pfizer Inc (0.1%), Sofinnova Investments, Inc. (0.0%) and Board of Trustees of The Leland Stanford Junior University (0.0%).
- No member of Congress has disclosed a trade in BOLT.
- BOLT last closed at $6.36 on Oct 29, 2026.
BOLT insider trading
Between Aug 1, 2026 and Oct 29, 2026, 3 BOLT insiders filed 2 open-market purchases worth $4K and 3 sales worth $128K on SEC Form 4.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Sep 21, 2026 | Quinn William P. | President, CEO and CFO, Director | Sale | 17,566 | $3.32 | $58K | SEC |
| Sep 21, 2026 | Yonehiro Grant | Chief Operating Officer | Sale | 13,176 | $3.32 | $44K | SEC |
| Sep 21, 2026 | Nemec Sarah | Senior VP, Finance and PAO | Sale | 7,842 | $3.32 | $26K | SEC |
| Sep 21, 2026 | Quinn William P. | President, CEO and CFO, Director | Buy | 637 | $3.88 | $2K | SEC |
| Sep 21, 2026 | Nemec Sarah | Senior VP, Finance and PAO | Buy | 509 | $3.88 | $2K | SEC |
Who owns BOLT? Hedge funds and superinvestors
6 13F filers hold BOLT among their 50 largest positions, worth $1.2M combined. The biggest bets by portfolio weight are Pfizer Inc (0.1%), Sofinnova Investments, Inc. (0.0%) and Board of Trustees of The Leland Stanford Junior University (0.0%).
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Sofinnova Investments, Inc.Hedge fund | 0.0% | $530K | 137,721 | — | Q2 2026 |
| Vivo Capital, LLCHedge fund | 0.0% | $279K | 72,414 | +0.0% shares | Q2 2026 |
| Board of Trustees of The Leland Stanford Junior UniversityEndowment & foundation | 0.0% | $139K | 35,977 | +0.0% shares | Q2 2026 |
| Pfizer IncCorporation | 0.1% | $134K | 31,305 | +0.0% shares | Q2 2026 |
| Lynx1 Capital Management LPHedge fund | 0.0% | $119K | 30,800 | +0.0% shares | Q2 2026 |
| Nan Fung Group Holdings LtdInvestment manager | 0.0% | $19K | 5,000 | -82.9% shares | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 6). Screen BOLT in the grand portfolio →
BOLT stock trades by members of Congress
No member of Congress has disclosed a trade in BOLT.
BOLT questions and answers
Are insiders buying BOLT stock?
Between Aug 1, 2026 and Oct 29, 2026, 3 BOLT insiders filed 2 open-market purchases worth $4K and 3 sales worth $128K on SEC Form 4.
Which hedge funds own BOLT?
6 13F filers hold BOLT among their 50 largest positions, worth $1.2M combined. The biggest bets by portfolio weight are Pfizer Inc (0.1%), Sofinnova Investments, Inc. (0.0%) and Board of Trustees of The Leland Stanford Junior University (0.0%).
Has Congress traded BOLT?
No member of Congress has disclosed a trade in BOLT.
Who is the largest holder of BOLT?
Among 13F filers, Sofinnova Investments, Inc. reports the largest BOLT position, $530K (137,721 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Pfizer Inc's: 0.1% of its portfolio.
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