$EQ

$1.36 +$0.11 (8.8%) Close

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

Ownership

13F as of Q2 2026 · 63.4M shares outstanding

Who owns EQ?

By type of holder

Institutions 65.6% Insiders 1.5% Everyone else 32.9%

Concentration Top 10 holders own 54.0%

Jupiter Topco LLC 10.2% · Adage Capital Partners GP, L.L.C. 2.2%

Institutional ownership

65.6%

+1.7 pts vs last qtr

Institutional holders

+9 vs last qtr

Net shares bought

+1.1M

by institutions in Q2 2026

New / sold out

19 / 10

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Jupiter Topco LLC NEW +6.5M
Affinity Asset Advisors, LLC +2.9M

Biggest sellers in Q2 2026

Janus Henderson Group PLC SOLD OUT −6.5M
Adage Capital Partners GP, L.L.C. −3.9M

Who is planning to sell?

Notices of proposed sale, last 12 months

$2.02M

10 notices from 3 people

Shares covered

922.5K

1.45% of the company

Arranged in advance

64%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Zedelmayer Christine Officer 10b5-1 $1.29M
Connelly Stephen Officer $724K

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

+98.9%

+18.76% a year

Each share's claim on the business

−49.7%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$260K vs $19.3M

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+ years6% 3–5 years2% 1–3 years11% Under 1 year81%

Quarterly turnover

33.3%

of institutional shares changed hands

Top 10 managers, median time held

3 quarters

Super Investors

Investment managers reporting EQ on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
JT Jupiter Topco LLC	6.5M	10.24%	NEW	Q2 '26	0.0%
Shares held by quarter Peak holding6.5M (Q2'26) Change over 8 quarters+6.5M Share of the company10.240% Jupiter Topco LLC's full portfolio →
JH Janus Henderson Group PLC	—	—	SOLD OUT	—	0.0%
Shares held by quarter Peak holding6.5M (Q1'26) Change over 8 quarters0 Janus Henderson Group PLC's full portfolio →

Jupiter Topco LLC

6.5M

% of company

10.24%

Change vs last qtr

NEW

Held since

Q2 '26

Janus Henderson Group PLC

—

% of company

—

Change vs last qtr

SOLD OUT

Held since

—

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting EQ on Form N-PORT; together they hold 9.4% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
AL abrdn Life Sciences Investors abrdn Life Sciences Investors	$11.6M	3.6M	5.73%	1.69%	June 30, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$4.49M	1.4M	2.21%	0.00%	June 30, 2026

abrdn Life Sciences Investors

Position value

$11.6M

% of company

5.73%

% of the fund

1.69%

As of

June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$4.49M

% of company

2.21%

% of the fund

0.00%

As of

June 30, 2026

14 more funds behind a free account

See every fund holding Equillium 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
CS Connelly Stephen Insider	762.0K	1.20%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company1.200% Connelly Stephen's insider activity →
KJ Keyes Jason A Insider	126.6K	0.20%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.200% Keyes Jason A's insider activity →

Connelly Stephen

Insider

762.0K

% of company

1.20%

Change vs last qtr

—

Held since

—

Keyes Jason A

Insider

126.6K

% of company

0.20%

Change vs last qtr

—

Held since

—

1 more holders behind a free account

See every insider and 5%+ holder of Equillium Inc.

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