What SEC filings does Celldex Therapeutics, Inc. submit to the SEC?

Celldex Therapeutics, Inc. (CLDX) submits several types of SEC filings including Form 4 (insider transactions), Form 144 (proposed insider sales), 8-K reports (material events such as earnings releases, acquisitions, leadership changes), and periodic reports — the 10-Q (quarterly) and 10-K (annual). All filings are publicly available through SEC EDGAR.

What does a Form 4 filing tell me about CLDX?

A Form 4 for CLDX discloses a transaction by a company insider — typically a director, officer, or 10%+ shareholder. It shows the source-reported date, number of shares, price, and updated ownership. These facts do not establish motive or predict future returns.

How do I interpret an 8-K filing from Celldex Therapeutics, Inc.?

An 8-K signals a material event requiring prompt disclosure. Common triggers include earnings pre-announcements, acquisitions, leadership appointments or departures, credit changes, or regulatory actions. Read the item codes inside the filing to understand exactly what was disclosed before drawing conclusions.

What is the difference between a 10-K and 10-Q for CLDX?

The 10-K is Celldex Therapeutics, Inc.'s annual report with fully audited financial statements, comprehensive MD&A, and complete risk factor disclosures — filed 60–90 days after fiscal year-end. The 10-Q is a lighter quarterly report with unaudited financials filed for the first three quarters. Together they provide a continuous financial picture of the company.

Where can I see all CLDX SEC filings directly on EDGAR?

You can view all historical Celldex Therapeutics, Inc. filings on the SEC EDGAR company page for CLDX. Each filing card on this page links directly to the original SEC document.

How often does Celldex Therapeutics, Inc. file with the SEC?

Celldex Therapeutics, Inc. files one 10-K per year and up to three 10-Qs per year. Form 4 insider transactions must be reported within two business days of each trade, so the frequency depends on how often insiders are buying or selling CLDX shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

CLDX SEC Filing News — Celldex Therapeutics, Inc.

Latest SEC filings for Celldex Therapeutics, Inc. (CLDX) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-09-22.

Celldex Therapeutics, Inc., a biopharmaceutical company, engages in developing therapeutic antibodies for patients with severe inflammatory, allergic, autoimmune, and other diseases. The company's drug candidates include monoclonal and bispecific antibodies designed to address mast cell mediated diseases for which available treatments are inadequate. It develops clinical programs, including Barzolvolimab (CDX-0159), a monoclonal antibody that specifically binds the KIT receptor and potently inhi…

Sector: Healthcare Industry: Biotechnology Market Cap: $2.4B

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

What you're looking at: Each item below is parsed from an actual SEC filing submitted by Celldex Therapeutics, Inc.. Form 4 = confirmed insider transaction · Form 144 = proposed sale notice · 8-K = material event (earnings, M&A, leadership change, etc.) · 10-Q / 10-K = quarterly / annual report.

CLDX Filing Activity Snapshot 2026-06-29 — 2026-09-22

Insider Transactions (Form 4)

0 buys vs 0 sells

Insider buying and selling activity is balanced in this period.

Insider Transactions 16 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 16 filings in this group are Form 4s for Celldex Therapeutics, Inc.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 16 insider filings shown, the breakdown is 16 compensation award. None of the classified filings involved a discretionary open-market trade, so this period says nothing about what insiders think of the price.

What each transaction type means

Compensation award ×16: Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

CLDX insider Form 4 filed for equity award, exercise, or tax withholding

Lawver Teri L (SVP & Chief Commercial Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Incentive Stock Option (right to buy)	90,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Lawver Teri L (SVP & Chief Commercial Officer)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

CLDX insider Form 4 filed for equity award, exercise, or tax withholding

Jimenez Freddy A. (SVP & GENERAL COUNSEL) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Incentive Stock Option (right to buy)	93,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Jimenez Freddy A. (SVP & GENERAL COUNSEL)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

CLDX insider Form 4 filed for equity award, exercise, or tax withholding

Young Diane C. (SVP, CHIEF MEDICAL OFFICER) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Incentive Stock Option (right to buy)	57,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Young Diane C. (SVP, CHIEF MEDICAL OFFICER)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

CLDX insider Form 4 filed for equity award, exercise, or tax withholding

Heath-Chiozzi Margo (SVP OF REGULATORY AFFAIRS) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Incentive Stock Option (right to buy)	95,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Heath-Chiozzi Margo (SVP OF REGULATORY AFFAIRS)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

CLDX insider Form 4 filed for equity award, exercise, or tax withholding

Martin Samuel Bates (SVP AND CFO) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Incentive Stock Option (right to buy)	93,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Martin Samuel Bates (SVP AND CFO)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

CLDX insider Form 4 filed for equity award, exercise, or tax withholding

Cavanaugh Sarah (SVP OF CORP AFFAIRS & ADMIN.) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Incentive Stock Option (right to buy)	95,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Cavanaugh Sarah (SVP OF CORP AFFAIRS & ADMIN.)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

CLDX insider Form 4 filed for equity award, exercise, or tax withholding

Crowley Elizabeth (SR. VP & CPDO) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Incentive Stock Option (right to buy)	100,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Crowley Elizabeth (SR. VP & CPDO)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

CLDX insider Form 4 filed for equity award, exercise, or tax withholding

PEPIN RONALD (SR. VP & CBO) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Incentive Stock Option (right to buy)	20,000	—	—

Filing: Form 4 (Insider Transaction) Insider: PEPIN RONALD (SR. VP & CBO)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

CLDX insider Form 4 filed for equity award, exercise, or tax withholding

KELER TIBOR (EXECUTIVE VP & CSO) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Incentive Stock Option (right to buy)	115,000	—	—

Filing: Form 4 (Insider Transaction) Insider: KELER TIBOR (EXECUTIVE VP & CSO)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

CLDX insider Form 4 filed for equity award, exercise, or tax withholding

Marucci Anthony S (Director, PRESIDENT & CEO) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Incentive Stock Option (right to buy)	375,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Marucci Anthony S (Director, PRESIDENT & CEO)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

CLDX insider Form 4 filed for equity award, exercise, or tax withholding

Torres Denice (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Non-Qualified Stock Option (right to buy)	26,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Torres Denice (Director)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

CLDX insider Form 4 filed for equity award, exercise, or tax withholding

Jain Rita (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Non-Qualified Stock Option (right to buy)	26,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Jain Rita (Director)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

CLDX insider Form 4 filed for equity award, exercise, or tax withholding

NEIL GARRY ARTHUR (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Non-Qualified Stock Option (right to buy)	26,000	—	—

Filing: Form 4 (Insider Transaction) Insider: NEIL GARRY ARTHUR (Director)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

CLDX insider Form 4 filed for equity award, exercise, or tax withholding

Cohen Cheryl (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Non-Qualified Stock Option (right to buy)	26,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Cohen Cheryl (Director)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

CLDX insider Form 4 filed for equity award, exercise, or tax withholding

Brownlie Keith L (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Non-Qualified Stock Option (right to buy)	26,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Brownlie Keith L (Director)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

CLDX insider Form 4 filed for equity award, exercise, or tax withholding

MARINO JAMES J (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Non-Qualified Stock Option (right to buy)	26,000	—	—

Filing: Form 4 (Insider Transaction) Insider: MARINO JAMES J (Director)

View on SEC EDGAR → Open Filing Document →

Material Events 3 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 3 in this period for Celldex Therapeutics, Inc. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-09-22

CLDX filed 8-K — material company event

Celldex Therapeutics, Inc. filed an 8-K with the SEC reporting a material event. Read the SEC filing for the full details.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-08-06

CLDX filed 8-K — material company event

Celldex Therapeutics, Inc. filed an 8-K with the SEC reporting a material event. Read the SEC filing for the full details.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-07-15

CLDX filed 8-K — material company event

Celldex Therapeutics, Inc. filed an 8-K with the SEC reporting a material event. Read the SEC filing for the full details.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Periodic Reports 1 · Forms 10-K and 10-Q

The periodic reports are where the audited and reviewed financial statements live. This period contains 1 quarterly report (10-Q) for Celldex Therapeutics, Inc.

The two are not equivalent in weight. A 10-K is audited by an external firm and includes the full risk factor disclosure, business description and management discussion; a 10-Q is unaudited, reviewed rather than examined, and much shorter. When a figure in a quarterly report is later revised, the annual report is usually where the correction appears.

An amended report — 10-K/A or 10-Q/A — restates or corrects something in the original filing, and is worth reading against the version it replaces.

Form 10-Q Quarterly Report 2026-08-06

CLDX filed Quarterly Report (10-Q)

Celldex Therapeutics, Inc. filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)

View on SEC EDGAR → Open Filing Document →

How we classify Celldex Therapeutics, Inc.'s filings

Straight from EDGAR

Each displayed record links to an original source document. StrongBuyAnalytics provides navigation and brief excerpts or summaries, not the filing itself. Parsing may omit context or contain errors, so read the original document in full.

Transaction codes, not guesswork

The nature shown on each insider filing comes from the transaction code the filer entered on the form itself — P for an open-market purchase, A for a compensation award, F for shares withheld to pay tax, M for an option exercise. Where one filing contains several codes, the transaction table lists them line by line.

Why the distinction matters

Insider activity is routinely summarised as buying or selling, which flattens together decisions that mean very different things. Shares withheld for tax on a vesting grant are an automatic administrative step; shares bought on the open market are someone committing their own money at the current price.

What this page does not tell you

A filing records what happened, not why. Form 4 does not always disclose whether a sale was executed under a pre-arranged Rule 10b5-1 plan, and no single filing is a basis for a decision on CLDX. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — CLDX SEC Filings

More Tools for CLDX

CLDX Full Stock Analysis CLDX Live Chart Institutional Ownership Earnings Calendar Options Flow Scanner Semiconductor Demand Zone Tracker Sector Scanner Browse All Stocks

Want deeper CLDX analysis?

View valuation, growth metrics, the rule-based stock-page score, demand zones, peer comparison, and more — all on the CLDX stock analysis page.

CLDX Full Analysis

Publisher, sources & limitations — September 15, 2026. StrongBuyAnalytics provides navigation and brief excerpts or summaries for educational use. Original filings remain at SEC EDGAR or other displayed source links; StrongBuyAnalytics does not author them. Filing dates are source dates, not publication dates for this page. Coverage can be delayed, incomplete, amended, or unavailable because of SEC/source availability, parsing, caching, or outages. Verify every material statement in the original filing.

Data Sources · Methodology · AI Disclosure · Corrections Policy · Disclaimer