Celldex Therapeutics, Inc. (CLDX) Institutional Ownership & Insider Trading

253 institutions reported holding Celldex Therapeutics, Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 2 insider trades on Form 4 since 2025-10-01.

Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason

CLDXCelldex Therapeutics, Inc.Follow CLDX — free

Biotechnology · Healthcare

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Market cap: 2.3B
P/E TTM: —
Dividend yield: —
52-week: —
Next earnings: 11 Nov, in 18 days

Institutions · all 13F filers

quarter to 30 Jun 2026 · filers in both quarters

253 institutions held —% of the shares. Across filers that reported both quarters, shares held changed +17.3%.

Largest moves, shares (millions)

Institutional flow by quarter

net shares added or trimmed, millions · filers in both quarters

Quarter	Holders	Shares held, M	Change	Increased	New	Decreased	Closed
Jun 26	253	86	+17.3%	103	40	51	13
Mar 26	228	73	-0.7%	66	48	50	11
Dec 25	185	73	+2.2%	56	19	55	17
Sep 25	178	71	-2.1%	55	22	51	23
Jun 25	180	72	-1.4%	71	33	40	24
Mar 25	171	74	+0.0%	57	24	50	29
Dec 24	174	74	+2.3%	63	26	43	35
Sep 24	176	72	+3.2%	61	20	52	21

Celldex Therapeutics, Inc. — questions

Who owns Celldex Therapeutics, Inc. stock?: 253 institutions reported Celldex Therapeutics, Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: WELLINGTON MANAGEMENT GROUP LLP (12.2%), BlackRock, Inc. (8.9%), Kynam Capital Management, LP (6.8%).
Are Celldex Therapeutics, Inc. insiders buying or selling?: 2 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.

Every figure on this page comes from Celldex Therapeutics, Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.

How these figures are read: methodology · EquiReason.

Important information. Figures on this page are taken from filings submitted to the U.S. Securities and Exchange Commission (SEC) and processed automatically by EquiReason. They may contain errors, omissions or delays, and EquiReason makes no representation or warranty as to their accuracy, completeness or timeliness. Always verify figures against the original filing on SEC EDGAR before relying on them.

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