Bolt Biotherapeutics Inc. Insider Trading

BOLT

Last 12 months

Insiders bought 6K and sold 128K on the open market.

None of the selling was scheduled in advance under a 10b5-1 plan. President, CEO and CFO William P. Quinn sold 58K on Sep 18, 41% of their stake, outside a plan.

Net open-market

−123K

4 buys · 3 sales

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

2 / 3

executives and directors

Last open-market buy

Jun 2026

Jun 5, 2026

Get an email when BOLT's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Sep 16 – 18	Grant Yonehiro Chief Operating Officer	SoldNo plan 3 parts	13,176	$3.33 average	44K	43%	Form 4
Sep 16 – 18	Sarah Nemec Senior VP, Finance and PAO	SoldNo plan 3 parts	7,842	$3.33 average	26K	31%	Form 4
Sep 16 – 18	William P. Quinn President, CEO and CFO	SoldNo plan 3 parts	17,566	$3.33 average	58K	41%	Form 4
Jun 5	Sarah Nemec Senior VP, Finance and PAO	Bought	509	$3.88	2K	3.1%	Form 4
Jun 5	William P. Quinn President, CEO and CFO	Bought	637	$3.88	2K	2.6%	Form 4
Dec 5, 2025	William P. Quinn President, CEO and CFO	Bought	125	$4.61	$576	5.7%	Form 4
Dec 5, 2025	Sarah Nemec Senior VP, Finance and PAO	Bought	125	$4.61	$576	9.7%	Form 4
Jun 6, 2025	Sarah Nemec Senior VP, Finance and PAO	Bought	125	$5.49	$686	0.5%	Form 4
Jun 6, 2025	William P. Quinn President, CEO and CFO	Bought	125	$5.49	$686	0.3%	Form 4
Dec 16, 2024	Sarah Nemec Senior VP, Finance and PAO	Bought	2,500	$0.50	1K	22%	Form 4
Dec 16, 2024	William P. Quinn President, CEO and CFO	Bought	2,500	$0.50	1K	6.9%	Form 4

Sep 16 – 18No plan
Grant Yonehiro
Chief Operating Officer · sold 13,176 at avg $3.33
44K
43% of stake
Sep 16 – 18No plan
Sarah Nemec
Senior VP, Finance and PAO · sold 7,842 at avg $3.33
26K
31% of stake
Sep 16 – 18No plan
William P. Quinn
President, CEO and CFO · sold 17,566 at avg $3.33
58K
41% of stake
Jun 5
Sarah Nemec
Senior VP, Finance and PAO · bought 509 at $3.88
2K
3.1% of stake
Jun 5
William P. Quinn
President, CEO and CFO · bought 637 at $3.88
2K
2.6% of stake
Dec 5, 2025
William P. Quinn
President, CEO and CFO · bought 125 at $4.61
$576
5.7% of stake
Dec 5, 2025
Sarah Nemec
Senior VP, Finance and PAO · bought 125 at $4.61
$576
9.7% of stake
Jun 6, 2025
Sarah Nemec
Senior VP, Finance and PAO · bought 125 at $5.49
$686
0.5% of stake
Jun 6, 2025
William P. Quinn
President, CEO and CFO · bought 125 at $5.49
$686
0.3% of stake
Dec 16, 2024
Sarah Nemec
Senior VP, Finance and PAO · bought 2,500 at $0.50
1K
22% of stake
Dec 16, 2024
William P. Quinn
President, CEO and CFO · bought 2,500 at $0.50
1K
6.9% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch BOLT, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in BOLT's SEC filings or

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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