$BOLT

$6.37 -$0.22 (3.34%) Close

$BOLT Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 1.9M shares outstanding

Who owns BOLT?

By type of holder

Institutions 31.0% Insiders 7.6% Everyone else 61.5%

Concentration Top 10 holders own 34.4%

Sofinnova Investments, Inc. 7.2% · Renaissance Technologies LLC 5.1%

Institutional ownership

31.0%

-0.9 pts vs last qtr

Institutional holders

-1 vs last qtr

Net shares bought

−16.7K

by institutions in Q2 2026

New / sold out

2 / 3

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Citadel Advisors LLC +46.8K
Renaissance Technologies LLC +21.4K

Biggest sellers in Q2 2026

Pivotal bioVenture Partners Investment Advisor LLC SOLD OUT −42.6K
Nan Fung Group Holdings Ltd −24.3K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Bolt Biotherapeutics, Inc. in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2024–FY2025

−2.1%

−2.06% a year

Each share's claim on the business

+2.1%

grew without buying or selling a share

Spent on buybacks vs paid in stock

— vs $10.2M

over 2 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years66% 3–5 years0% 1–3 years6% Under 1 year29%

Quarterly turnover

13.1%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting BOLT on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
SI Sofinnova Investments, Inc.	137.7K	7.15%	Unchanged	≤2021	0.0%
Shares held by quarter Peak holding2.8M (Q3'24) Change over 8 quarters−2.6M Share of the company7.150% Sofinnova Investments, Inc.'s full portfolio →
RT Renaissance Technologies LLC	98.6K	5.12%	+21.4K (+27.7%)	≤2021	0.0%
Shares held by quarter Peak holding314.1K (Q1'25) Change over 8 quarters−195.4K Share of the company5.120% Renaissance Technologies LLC's full portfolio →

Sofinnova Investments, Inc.

137.7K

% of company

7.15%

Change vs last qtr

Unchanged

Held since

≤2021

Renaissance Technologies LLC

98.6K

% of company

5.12%

Change vs last qtr

+21.4K (+27.7%)

Held since

≤2021

24 more super investors behind a free account

See every manager holding Bolt Biotherapeutics, Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting BOLT on Form N-PORT; together they hold 1.1% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
FE Fidelity Extended Market Index Fund Fidelity Concord Street Trust	$30.5K	7.5K	0.39%	0.00%	August 31, 2026
VE Vanguard Extended Market Index Fund Vanguard Index Funds	$27.2K	7.1K	0.37%	0.00%	June 30, 2026

Fidelity Extended Market Index Fund

Fidelity Concord Street Trust

Position value

$30.5K

% of company

0.39%

% of the fund

0.00%

As of

August 31, 2026

Vanguard Extended Market Index Fund

Vanguard Index Funds

Position value

$27.2K

% of company

0.37%

% of the fund

0.00%

As of

June 30, 2026

4 more funds behind a free account

See every fund holding Bolt Biotherapeutics, Inc. and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
GS Gujrathi Sheila Insider	85.8K	4.46%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company4.460% Gujrathi Sheila's insider activity →
PB Pivotal bioVenture Partners Fund I, L.P. 5%+ holder 13D · 2.7%	52.6K	2.73%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company2.730% Disclosed stake13D · 2.7% View the 13D/G filing →

Gujrathi Sheila

Insider

85.8K

% of company

4.46%

Change vs last qtr

—

Held since

—

Pivotal bioVenture Partners Fund I, L.P.

5%+ holder13D · 2.7%

52.6K

% of company

2.73%

Change vs last qtr

—

Held since

—

4 more holders behind a free account

See every insider and 5%+ holder of Bolt Biotherapeutics, Inc..

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