Latest filingSep 21, 2026Most recent Form 4
BOLT
Bolt Biotherapeutics, Inc.
NasdaqHealthcarePharmaceutical Preparations
Insider activity for last month from 08/22 to 09/22. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total buying$00 buys
Total selling$12.8M9 sells
Net open-market-$12.8M3 insiders
Open-market mix
Buy vs sell distribution by transaction countInsider activity report
Monthly open-market purchase and sale counts Buys Sells
Transaction codes
By Form 4 transaction code in selected period9transactions
- S · Open-market sells · dominant9 · 100%
Activity by reported role
A joint filing can contribute to multiple roles15transactions
- CC · dominant3 · 20%
- COO3 · 20%
- FP3 · 20%
- PRES3 · 20%
- SV3 · 20%
Distinct insiders active
Reporting-owner CIKs by month · peak Sep 2026 (3)Aug 2026Sep 2026
Reported Holdings After
Separated by insider, security, and ownership typeQuinn William P.Common Stock · Direct
25,384Sep 18, 2026
Nemec SarahCommon Stock · Direct
17,082Sep 18, 2026
Yonehiro GrantCommon Stock · Direct
17,269Sep 18, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells redAug 22 → Sep 22
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Top insiders
By absolute net value across the selected period- QP-$58.4k
- YG-$43.8k
- NS-$26.1k
Filing detail checks
Secondary metrics for the selected periodFiling-only signals
Deterministic matches in the selected period
No filing-only signal badges matched this period.
BOLT transaction history
Filters apply within this company and selected period by defaultLatest insider transactions
Form 4 filings from last month. Click any column to sort; click it again to flip the order.
| ID | Ticker | Insider | Role | Type | Shares | Value | Code | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|
| #227048 | BOLT | Yonehiro Grant | COO | sale | 6.85k | -$2.21M | S | 09/21 | 09/18 |
| #227047 | BOLT | Yonehiro Grant | COO | sale | 4.90k | -$1.62M | S | 09/21 | 09/17 |
| #227046 | BOLT | Yonehiro Grant | COO | sale | 1.41k | -$534k | S | 09/21 | 09/16 |
| #227044 | BOLT | Nemec Sarah | SVFP | sale | 4.07k | -$1.31M | S | 09/21 | 09/18 |
| #227043 | BOLT | Nemec Sarah | SVFP | sale | 2.92k | -$969k | S | 09/21 | 09/17 |
| #227042 | BOLT | Nemec Sarah | SVFP | sale | 843 | -$318k | S | 09/21 | 09/16 |
| #227039 | BOLT | Quinn William P. | PRESCC | sale | 9.13k | -$2.95M | S | 09/21 | 09/18 |
| #227038 | BOLT | Quinn William P. | PRESCC | sale | 6.54k | -$2.17M | S | 09/21 | 09/17 |
| #227037 | BOLT | Quinn William P. | PRESCC | sale | 1.88k | -$712k | S | 09/21 | 09/16 |
Bolt Biotherapeutics, Inc. Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at Bolt Biotherapeutics, Inc.?
Yonehiro Grant, Nemec Sarah, Quinn William P..
When was the latest reported open-market purchase?
No code-P purchase is available for this period.
When was the latest reported open-market sale?
Yonehiro Grant reported a sale on Sep 18, 2026 valued at $2.21M. Read the SEC filing.
What is the recent purchase and sale balance?
Net open-market selling in the selected period was $128,281.14. Sales can occur for many non-investment reasons.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.