$ANAB

$48.77 +$0.04 (0.08%) Close

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

Ownership

13F as of Q2 2026 · 29.1M shares outstanding

Who owns ANAB?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 58.7%

EcoR1 Capital, LLC 27.1% · BlackRock, Inc. 6.3%

Institutional ownership

100.0%

+2.9 pts vs last qtr

Institutional holders

212

+4 vs last qtr

Net shares bought

+1.9M

by institutions in Q2 2026

New / sold out

45 / 41

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Woodline Partners LP +372.8K
Millennium Management LLC +331.7K

Biggest sellers in Q2 2026

Morgan Stanley −736.8K
Synergy Asset Management, LLC SOLD OUT −317.1K

Who is planning to sell?

Notices of proposed sale, last 12 months

$28.5M

50 notices from 9 people

Shares covered

538.1K

1.85% of the company

Arranged in advance

14%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Dennis Mulroy Officer $20.2M
Eric J Loumeau Officer $2.75M

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, FY2019–FY2025

+6.3%

+1.02% a year

Each share's claim on the business

−5.9%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$119M vs $146M

over 7 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+ years64% 3–5 years8% 1–3 years13% Under 1 year14%

Quarterly turnover

13.2%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting ANAB on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
EC EcoR1 Capital, LLC	7.9M	27.08%	Unchanged	≤2021	25.9%
Shares held by quarter Peak holding7.9M (Q1'25) Change over 8 quarters+85.1K Share of the company27.080% EcoR1 Capital, LLC's full portfolio →
B BlackRock, Inc.	1.8M	6.34%	+162.7K (+9.7%)	≤2021	0.0%
Shares held by quarter Peak holding2.5M (Q4'24) Change over 8 quarters−336.1K Share of the company6.340% BlackRock, Inc.'s full portfolio →

EcoR1 Capital, LLC

7.9M

% of company

27.08%

Change vs last qtr

Unchanged

Held since

≤2021

BlackRock, Inc.

1.8M

% of company

6.34%

Change vs last qtr

+162.7K (+9.7%)

Held since

≤2021

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting ANAB on Form N-PORT; together they hold 23.6% 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	$53.1M	786.6K	2.70%	0.49%	June 30, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$43.7M	648.1K	2.23%	0.00%	June 30, 2026

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

SPDR Series Trust

Position value

$53.1M

% of company

2.70%

% of the fund

0.49%

As of

June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$43.7M

% of company

2.23%

% of the fund

0.00%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding AnaptysBio, 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
FD Faga Daniel Insider	496.0K	1.70%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company1.700% Faga Daniel's insider activity →
LP Lizzul Paul F. Insider	42.1K	0.14%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.140% Lizzul Paul F.'s insider activity →

Faga Daniel

Insider

496.0K

% of company

1.70%

Change vs last qtr

—

Held since

—

Lizzul Paul F.

Insider

42.1K

% of company

0.14%

Change vs last qtr

—

Held since

—

9 more holders behind a free account

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

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