$NAUT

$2.89 +$0.45 (18.44%) Close

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

Ownership

13F as of Q2 2026 · 127.4M shares outstanding

Who owns NAUT?

By type of holder

Institutions 38.7% Insiders 39.9% Everyone else 21.5%

Concentration Top 10 holders own 88.8%

Parag Mallick 17.7% · Sujal Patel 16.7%

Institutional ownership

38.7%

-4.0 pts vs last qtr

Institutional holders

+11 vs last qtr

Net shares bought

−5.1M

by institutions in Q2 2026

New / sold out

29 / 18

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

BlackRock, Inc. +2.5M
Citadel Advisors LLC NEW +1.9M

Biggest sellers in Q2 2026

a16z Capital Management, L.L.C. −8.6M
Amazon Com Inc SOLD OUT −1.5M

Who is planning to sell?

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

Is your stake being diluted?

Diluted share count, FY2020–FY2025

+334.0%

+34.12% a year

Each share's claim on the business

−77.0%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $50.4M

over 6 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+ years37% 3–5 years28% 1–3 years23% Under 1 year12%

Quarterly turnover

22.8%

of institutional shares changed hands

Top 10 managers, median time held

4.8 years

Super Investors

Investment managers reporting NAUT on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
AC a16z Capital Management, L.L.C.	9.1M	7.12%	−8.6M (−48.7%)	2023	0.1%
Shares held by quarter Peak holding17.7M (Q3'24) Change over 8 quarters−8.6M Share of the company7.120% a16z Capital Management, L.L.C.'s full portfolio →
PA Perceptive Advisors LLC 13D · 9.1%	11.6M	9.13%	−960.0K (−7.6%)	≤2021	0.3%
Shares held by quarter Peak holding12.6M (Q3'24) Change over 8 quarters−960.0K Share of the company9.130% Disclosed stake13D · 9.1% Perceptive Advisors LLC's full portfolio →

a16z Capital Management, L.L.C.

9.1M

% of company

7.12%

Change vs last qtr

−8.6M (−48.7%)

Held since

2023

Perceptive Advisors LLC

13D · 9.1%

11.6M

% of company

9.13%

Change vs last qtr

−960.0K (−7.6%)

Held since

≤2021

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting NAUT on Form N-PORT; together they hold 5.3% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$3.61M	1.9M	1.52%	0.00%	June 30, 2026
IR iShares Russell 2000 ETF iShares Trust	$2.01M	1.1M	0.84%	0.00%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$3.61M

% of company

1.52%

% of the fund

0.00%

As of

June 30, 2026

iShares Russell 2000 ETF

iShares Trust

Position value

$2.01M

% of company

0.84%

% of the fund

0.00%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Nautilus Biotechnology, 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
PM Parag Mallick 5%+ holder 13D · 17.6%	22.6M	17.71%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company17.710% Disclosed stake13D · 17.6% View the 13D/G filing →
SP Sujal Patel 5%+ holder 13D · 16.3%	21.2M	16.68%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company16.680% Disclosed stake13D · 16.3% View the 13D/G filing →

Parag Mallick

5%+ holder13D · 17.6%

22.6M

% of company

17.71%

Change vs last qtr

—

Held since

—

Sujal Patel

5%+ holder13D · 16.3%

21.2M

% of company

16.68%

Change vs last qtr

—

Held since

—

12 more holders behind a free account

See every insider and 5%+ holder of Nautilus Biotechnology, Inc..

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