Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

Bolt Biotherapeutics, Inc.

BOLT · Nasdaq · CIK 0001641281 · Healthcare · Biotechnology

INSIDER SIGNAL

No active buy signal

2 qualifying P purchase groups
in the current 180-day scoring window

11 Form 4 transaction lines observed in the same window
9 sales · 0 option, withholding, award, gift or other lines

Last qualifying purchase2026-06-05 · Nemec Sarah · $2.0K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent
Recent buying2 qualifying line group(s)
Recent salesModerate
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Nemec SarahSenior VP, Finance and PAO
●▼▼▼
Quinn William P.President, CEO and CFO
●▼▼▼
Yonehiro GrantChief Operating Officer
▼▼▼
● Purchase▼ Sale○ Other

—

Purchase breadth & concentration

QUALIFYING BUYERS2
PURCHASE CONCENTRATION56%Largest buyer: Quinn William P. · $2.5K
CLUSTER BUYING · 15D2 insidersPeak activity: 2026-06-05–2026-06-05

Roles in the peak window: President, CEO and CFO, Senior VP, Finance and PAO. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2026-06-05 · Nemec Sarah.

Recent Form 4 activity

4Purchases
9Sales
3Other Form 4 lines
8SEC filings · 365 days
BUYING2 qualifying P line(s) · 180 days
SELLING9 sale line(s) · context only
OTHER0 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
25,736
Previous report
18,486
Avg daily volume
42,277
Days to cover
≤ 1.0

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2026-06-05Quinn William P.Purchase (P)Common Stock637USD 3.88USD 2,472SEC filing ↗
2026-06-05Nemec SarahPurchase (P)Common Stock509USD 3.88USD 1,975SEC filing ↗
2025-12-05Quinn William P.Purchase (P)Common Stock125USD 4.61USD 576SEC filing ↗
2025-12-05Nemec SarahPurchase (P)Common Stock125USD 4.61USD 576SEC filing ↗
2025-06-06Quinn William P.Purchase (P)Common Stock125USD 5.49USD 686SEC filing ↗
2025-06-06Nemec SarahPurchase (P)Common Stock125USD 5.49USD 686SEC filing ↗
2024-12-16Quinn William P.Purchase (P)Common Stock2,500USD 0.50USD 1,250SEC filing ↗
2024-12-16Nemec SarahPurchase (P)Common Stock2,500USD 0.50USD 1,250SEC filing ↗
2024-06-06Quinn William P.Purchase (P)Common Stock2,500USD 0.64USD 1,600SEC filing ↗
2024-06-06Nemec SarahPurchase (P)Common Stock2,500USD 0.64USD 1,600SEC filing ↗
2023-12-12Quinn William P.Purchase (P)Common Stock7,500USD 0.95USD 7,125SEC filing ↗
2023-12-06Yonehiro GrantPurchase (P)Common Stock2,500USD 0.78USD 1,950SEC filing ↗
2023-12-06Schatzman Randall CPurchase (P)Common Stock2,500USD 0.78USD 1,950SEC filing ↗
2023-12-06Perez Edith A.Purchase (P)Common Stock2,500USD 0.78USD 1,950SEC filing ↗
2023-12-06Quinn William P.Purchase (P)Common Stock2,500USD 0.78USD 1,950SEC filing ↗

Form 4 evidence

16 transaction lines in the latest 365-day window; 115 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-18Yonehiro GrantSale (S)Common Stock6,850USD 3.24USD 22,194SEC filing ↗
2026-09-18Quinn William P.Sale (S)Common Stock9,132USD 3.24USD 29,588SEC filing ↗
2026-09-18Nemec SarahSale (S)Common Stock4,077USD 3.24USD 13,209SEC filing ↗
Show recent Form 4 evidence (16 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-18Yonehiro GrantSale (S)Common Stock6,850USD 3.24USD 22,194SEC filing ↗
2026-09-18Quinn William P.Sale (S)Common Stock9,132USD 3.24USD 29,588SEC filing ↗
2026-09-18Nemec SarahSale (S)Common Stock4,077USD 3.24USD 13,209SEC filing ↗
2026-09-17Yonehiro GrantSale (S)Common Stock4,909USD 3.32USD 16,298SEC filing ↗
2026-09-17Quinn William P.Sale (S)Common Stock6,545USD 3.32USD 21,729SEC filing ↗
2026-09-17Nemec SarahSale (S)Common Stock2,922USD 3.32USD 9,701SEC filing ↗
2026-09-16Yonehiro GrantSale (S)Common Stock1,417USD 3.77USD 5,342SEC filing ↗
2026-09-16Quinn William P.Sale (S)Common Stock1,889USD 3.77USD 7,122SEC filing ↗
2026-09-16Nemec SarahSale (S)Common Stock843USD 3.77USD 3,178SEC filing ↗
2026-06-05Quinn William P.Purchase (P)Common Stock637USD 3.88USD 2,472SEC filing ↗
2026-06-05Nemec SarahPurchase (P)Common Stock509USD 3.88USD 1,975SEC filing ↗
2025-12-05Quinn William P.Purchase (P)Common Stock125USD 4.61USD 576SEC filing ↗
2025-12-05Nemec SarahPurchase (P)Common Stock125USD 4.61USD 576SEC filing ↗
2025-10-22Yonehiro GrantAward / grant (A)Common Stock30,000USD 0.00USD 0SEC filing ↗
2025-10-22Quinn William P.Award / grant (A)Common Stock40,000USD 0.00USD 0SEC filing ↗
2025-10-22Nemec SarahAward / grant (A)Common Stock23,000USD 0.00USD 0SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerBOLT
CIK0001641281
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC2834 Pharmaceutical Preparations
ExchangeNasdaq

Data coverage

Local Form 4 history115 transaction lines from 2021-02-09 to 2026-09-18
44 P purchase lines · 40 S sale lines · 31 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.