$CLDX

$30.15 +$0.65 (2.2%) Close

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

Ownership

13F as of Q2 2026 · 78.5M shares outstanding

Who owns CLDX?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 56.1%

Wellington Management Group LLP 12.2% · BlackRock, Inc. 8.9%

Institutional ownership

100.0%

+7.6 pts vs last qtr

Institutional holders

250

+22 vs last qtr

Net shares bought

+12.4M

by institutions in Q2 2026

New / sold out

47 / 25

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Price T Rowe Associates Inc /MD/ +2.6M
Deep Track Capital, LP +1.7M

Biggest sellers in Q2 2026

Point72 Asset Management, L.P. −3.1M
Commodore Capital LP −1.3M

Who is planning to sell?

Notices of proposed sale, last 12 months

$1.3M

2 notices from 2 people

Shares covered

53.5K

0.07% 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

Richard M Wright Officer $1.18M
Freddy A Jimenez Officer $121K

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, FY2020–FY2025

+223995.8%

+367.83% a year

Each share's claim on the business

−100.0%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $123M

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+ years52% 3–5 years17% 1–3 years15% Under 1 year16%

Quarterly turnover

20.9%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting CLDX on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
WM Wellington Management Group LLP	9.5M	12.15%	+983.2K (+11.5%)	≤2021	0.1%
Shares held by quarter Peak holding9.5M (Q2'26) Change over 8 quarters+300.1K Share of the company12.150% Wellington Management Group LLP's full portfolio →
B BlackRock, Inc.	7.0M	8.92%	+1.6M (+30.4%)	≤2021	0.0%
Shares held by quarter Peak holding7.0M (Q2'26) Change over 8 quarters+2.1M Share of the company8.920% BlackRock, Inc.'s full portfolio →

Wellington Management Group LLP

9.5M

% of company

12.15%

Change vs last qtr

+983.2K (+11.5%)

Held since

≤2021

BlackRock, Inc.

7.0M

% of company

8.92%

Change vs last qtr

+1.6M (+30.4%)

Held since

≤2021

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting CLDX on Form N-PORT; together they hold 41.0% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VH Vanguard Health Care Fund Vanguard Specialized Funds	$144M	3.8M	4.82%	0.38%	July 31, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$92.6M	2.5M	3.17%	0.00%	June 30, 2026

Vanguard Health Care Fund

Vanguard Specialized Funds

Position value

$144M

% of company

4.82%

% of the fund

0.38%

As of

July 31, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$92.6M

% of company

3.17%

% of the fund

0.00%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Celldex Therapeutics, 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
MA Marucci Anthony S Insider	40.3K	0.05%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.050% Marucci Anthony S's insider activity →
MS Martin Samuel Bates Insider	32.9K	0.04%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.040% Martin Samuel Bates's insider activity →

Marucci Anthony S

Insider

40.3K

% of company

0.05%

Change vs last qtr

—

Held since

—

Martin Samuel Bates

Insider

32.9K

% of company

0.04%

Change vs last qtr

—

Held since

—

4 more holders behind a free account

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

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