$ANNX

$3.76 +$0.06 (1.62%) Close

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

Ownership

13F as of Q2 2026 · 201.0M shares outstanding

Who owns ANNX?

By type of holder

Institutions 88.5% Insiders 5.8% Everyone else 5.7%

Concentration Top 10 holders own 49.5%

FMR LLC 9.7% · Redmile Group, LLC 5.9%

Institutional ownership

88.5%

+10.9 pts vs last qtr

Institutional holders

213

-4 vs last qtr

Net shares bought

+22.0M

by institutions in Q2 2026

New / sold out

30 / 34

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

FMR LLC +8.9M
Woodline Partners LP +4.6M

Biggest sellers in Q2 2026

Bank Of America Corp /de/ −3.6M
Redmile Group, LLC −2.7M

Who is planning to sell?

Notices of proposed sale, last 12 months

$332K

12 notices from 6 people

Shares covered

62.7K

0.03% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Yednock Ted Officer $70.3K
Lew Jennifer Officer $70.3K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2021–FY2025

+304.8%

+41.84% a year

Each share's claim on the business

−75.3%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $88.8M

over 5 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+ years51% 3–5 years7% 1–3 years17% Under 1 year25%

Quarterly turnover

20.4%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting ANNX on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
F FMR LLC	19.5M	9.71%	+8.9M (+83.5%)	≤2021	0.0%
Shares held by quarter Peak holding19.5M (Q2'26) Change over 8 quarters+11.0M Share of the company9.710% FMR LLC's full portfolio →
RG Redmile Group, LLC	11.9M	5.91%	−2.7M (−18.4%)	≤2021	4.6%
Shares held by quarter Peak holding14.5M (Q1'26) Change over 8 quarters+5.4M Share of the company5.910% Redmile Group, LLC's full portfolio →

FMR LLC

19.5M

% of company

9.71%

Change vs last qtr

+8.9M (+83.5%)

Held since

≤2021

Redmile Group, LLC

11.9M

% of company

5.91%

Change vs last qtr

−2.7M (−18.4%)

Held since

≤2021

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting ANNX on Form N-PORT; together they hold 31.7% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
SS State Street(R) SPDR(R) S&P(R) Biotech ETF SPDR Series Trust	$35.6M	6.2M	3.10%	0.33%	June 30, 2026
SB Select Biotechnology Portfolio Fidelity Select Portfolios	$30.5M	6.2M	3.07%	0.49%	August 31, 2026

State Street(R) SPDR(R) S&P(R) Biotech ETF

SPDR Series Trust

Position value

$35.6M

% of company

3.10%

% of the fund

0.33%

As of

June 30, 2026

Select Biotechnology Portfolio

Fidelity Select Portfolios

Position value

$30.5M

% of company

3.07%

% of the fund

0.49%

As of

August 31, 2026

23 more funds behind a free account

See every fund holding Annexon, 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
SM Satter Muneer A 5%+ holder 13D · 7.2%	10.4M	5.20%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company5.200% Disclosed stake13D · 7.2% View the 13D/G filing →
LD Love Douglas Insider	390.5K	0.19%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.190% Love Douglas's insider activity →

Satter Muneer A

5%+ holder13D · 7.2%

10.4M

% of company

5.20%

Change vs last qtr

—

Held since

—

Love Douglas

Insider

390.5K

% of company

0.19%

Change vs last qtr

—

Held since

—

7 more holders behind a free account

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

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