Celldex Therapeutics, Inc. SEC filings CLDX
Celldex Therapeutics, Inc. has 1,000 filings in SEC EDGAR's recent list, going back to Oct 31, 2007. Its latest annual report, Form ARS, was filed on Apr 29, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 6, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Sep 22, 2026 (other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Other events
|
Sep 22, 2026 | Sep 22, 2026 |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2026 | Aug 6, 2026 |
| 8-K |
Current report
Officer or director change
|
Jul 15, 2026 | Jul 10, 2026 |
| S-8 | Employee stock plan registration | Jun 26, 2026 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 26, 2026 | Jun 25, 2026 |
| 10-Q | Quarterly report | May 7, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 7, 2026 | May 7, 2026 |
| ARS | Annual report to shareholders | Apr 29, 2026 | Dec 31, 2025 |
| DEF 14A | Proxy statement | Apr 29, 2026 | Jun 25, 2026 |
| 424B5 | Prospectus supplement | Apr 2, 2026 | — |
| 8-K |
Current report
Material agreement, Other events
|
Apr 2, 2026 | Apr 1, 2026 |
| 424B5 | Prospectus supplement | Apr 1, 2026 | — |
| 10-K | Annual report | Feb 25, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 25, 2026 | Feb 25, 2026 |
| 10-Q | Quarterly report | Nov 10, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 10, 2025 | Nov 10, 2025 |
| 8-K |
Current report
Other events
|
Aug 19, 2025 | Aug 19, 2025 |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2025 | Aug 7, 2025 |
| S-8 | Employee stock plan registration | Jun 6, 2025 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 6, 2025 | Jun 5, 2025 |
| 10-Q | Quarterly report | May 8, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 8, 2025 | May 8, 2025 |
| ARS | Annual report to shareholders | Apr 21, 2025 | Dec 31, 2024 |
| DEF 14A | Proxy statement | Apr 21, 2025 | Jun 5, 2025 |
| 10-K | Annual report | Feb 27, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 27, 2025 | Feb 27, 2025 |
| 10-Q | Quarterly report | Nov 6, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2024 | Nov 6, 2024 |
| 10-Q | Quarterly report | Aug 8, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2024 | Aug 8, 2024 |
| S-8 | Employee stock plan registration | Jun 14, 2024 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 14, 2024 | Jun 13, 2024 |
| 10-Q | Quarterly report | May 6, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 6, 2024 | May 6, 2024 |
| ARS | Annual report to shareholders | Apr 25, 2024 | Dec 31, 2023 |
| DEF 14A | Proxy statement | Apr 25, 2024 | Jun 13, 2024 |
| 8-K |
Current report
Material agreement, Other events
|
Mar 1, 2024 | Feb 28, 2024 |
| 424B5 | Prospectus supplement | Mar 1, 2024 | — |
| 424B5 | Prospectus supplement | Feb 28, 2024 | — |
| 424B5 | Prospectus supplement | Feb 26, 2024 | — |
| 10-K | Annual report | Feb 26, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 26, 2024 | Feb 26, 2024 |
| 8-K |
Current report
Material agreement, Other events
|
Nov 8, 2023 | Nov 7, 2023 |
| 424B5 | Prospectus supplement | Nov 8, 2023 | — |
| 424B5 | Prospectus supplement | Nov 7, 2023 | — |
| 8-K |
Current report
Other events
|
Nov 6, 2023 | Nov 5, 2023 |
| S-3ASR | Automatic shelf registration | Nov 3, 2023 | — |
| 10-Q | Quarterly report | Nov 2, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2023 | Nov 2, 2023 |
| 10-Q | Quarterly report | Aug 8, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2023 | Aug 8, 2023 |
| S-8 | Employee stock plan registration | Jun 21, 2023 | — |
| 8-K |
Current report
Shareholder vote results
|
Jun 15, 2023 | Jun 15, 2023 |
| 10-Q | Quarterly report | May 4, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 4, 2023 | May 4, 2023 |
| ARS | Annual report to shareholders | Apr 25, 2023 | Dec 31, 2022 |
| DEF 14A | Proxy statement | Apr 25, 2023 | — |
| 8-K |
Current report
Other events
|
Mar 22, 2023 | Mar 21, 2023 |
| 10-K | Annual report | Feb 28, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 28, 2023 | Feb 28, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Feb 21, 2023 | Feb 16, 2023 |
| 10-Q | Quarterly report | Nov 9, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 9, 2022 | Nov 9, 2022 |
| 10-Q | Quarterly report | Aug 8, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2022 | Aug 8, 2022 |
| 8-K |
Current report
Material agreement
|
Jul 18, 2022 | Jul 15, 2022 |
| 8-K |
Current report
Material agreement, Results of operations
|
Jun 23, 2022 | Jun 20, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Jun 16, 2022 | Jun 16, 2022 |
| 10-Q | Quarterly report | May 5, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
May 5, 2022 | May 5, 2022 |
| DEF 14A | Proxy statement | Apr 26, 2022 | Jun 16, 2022 |
| 10-K | Annual report | Feb 28, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations
|
Feb 28, 2022 | Feb 28, 2022 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Jan 28, 2022 | Jan 25, 2022 |
| 10-Q | Quarterly report | Nov 9, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Nov 9, 2021 | Nov 9, 2021 |
| 10-Q | Quarterly report | Aug 5, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2021 | Aug 5, 2021 |
| 424B5 | Prospectus supplement | Jul 15, 2021 | — |
| 8-K |
Current report
Material agreement, Other events
|
Jul 14, 2021 | Jul 12, 2021 |
| 424B5 | Prospectus supplement | Jul 12, 2021 | — |
| 8-K |
Current report
Other events
|
Jul 12, 2021 | Jul 9, 2021 |
| 8-K |
Current report
Officer or director change
|
Jul 1, 2021 | Jul 1, 2021 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 17, 2021 | Jun 17, 2021 |
| S-8 | Employee stock plan registration | Jun 16, 2021 | — |
| 10-Q | Quarterly report | May 6, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations
|
May 6, 2021 | May 6, 2021 |
| DEF 14A | Proxy statement | Apr 27, 2021 | Jun 17, 2021 |
| 10-K | Annual report | Mar 29, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations
|
Mar 29, 2021 | Mar 29, 2021 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jan 4, 2021 | Jan 1, 2021 |
| 8-K |
Current report
Other events
|
Nov 6, 2020 | Nov 6, 2020 |
| S-3ASR | Automatic shelf registration | Nov 6, 2020 | — |
| 10-Q | Quarterly report | Nov 5, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2020 | Nov 5, 2020 |
| 8-K |
Current report
Other events
|
Aug 18, 2020 | Aug 18, 2020 |
| 10-Q | Quarterly report | Aug 6, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2020 | Aug 6, 2020 |
| S-8 | Employee stock plan registration | Jun 26, 2020 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 18, 2020 | Jun 18, 2020 |
| 424B5 | Prospectus supplement | Jun 17, 2020 | — |
| 8-K |
Current report
Material agreement, Other events
|
Jun 17, 2020 | Jun 15, 2020 |
| S-3MEF | Filing | Jun 15, 2020 | — |
| 8-K |
Current report
Other events
|
Jun 15, 2020 | Jun 15, 2020 |
| 424B5 | Prospectus supplement | Jun 15, 2020 | — |
| 424B5 | Prospectus supplement | Jun 15, 2020 | — |
| EFFECT | Filing | Jun 12, 2020 | — |
| 8-K |
Current report
Other events
|
Jun 12, 2020 | Jun 12, 2020 |
| 424B5 | Prospectus supplement | Jun 12, 2020 | — |
| CORRESP | Letter to the SEC | Jun 12, 2020 | — |
| S-3/A | Form s-3/a | Jun 12, 2020 | — |
| 10-Q | Quarterly report | May 6, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Results of operations
|
May 6, 2020 | May 6, 2020 |
| DEF 14A | Proxy statement | Apr 28, 2020 | Jun 18, 2020 |
| 424B5 | Prospectus supplement | Mar 27, 2020 | — |
| 10-K | Annual report | Mar 26, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Results of operations
|
Mar 26, 2020 | Mar 26, 2020 |
| UPLOAD | Letter from the SEC | Dec 12, 2019 | — |
| S-3 | Shelf registration | Dec 6, 2019 | — |
| 10-Q | Quarterly report | Nov 12, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2019 | Nov 12, 2019 |
| 10-Q | Quarterly report | Aug 7, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2019 | Aug 7, 2019 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jun 24, 2019 | Jun 24, 2019 |
| S-8 | Employee stock plan registration | Jun 21, 2019 | — |
| S-8 | Employee stock plan registration | Jun 21, 2019 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 20, 2019 | Jun 19, 2019 |
| 10-Q | Quarterly report | May 7, 2019 | Mar 31, 2019 |
| DEFA14A | Additional proxy material | May 7, 2019 | — |
| 8-K |
Current report
Results of operations
|
May 7, 2019 | May 7, 2019 |
| DEF 14A | Proxy statement | Apr 26, 2019 | Jun 19, 2019 |
| 10-K | Annual report | Mar 7, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Results of operations
|
Mar 7, 2019 | Mar 7, 2019 |
| 8-K |
Current report
Change to shareholder rights, Bylaw or fiscal year change
|
Feb 8, 2019 | Feb 8, 2019 |
| 8-K |
Current report
Officer or director change
|
Dec 10, 2018 | Dec 5, 2018 |
| 8-K |
Current report
Listing notice
|
Nov 27, 2018 | Nov 27, 2018 |
| 10-Q | Quarterly report | Nov 7, 2018 | Sep 30, 2018 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2018 | Nov 7, 2018 |
| 10-Q | Quarterly report | Aug 8, 2018 | Jun 30, 2018 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2018 | Aug 8, 2018 |
| 8-K |
Current report
Shareholder vote results
|
Jun 14, 2018 | Jun 13, 2018 |
| 8-K |
Current report
Listing notice
|
Jun 1, 2018 | May 29, 2018 |
| 10-Q | Quarterly report | May 10, 2018 | Mar 31, 2018 |
| 8-K |
Current report
Results of operations
|
May 10, 2018 | May 10, 2018 |
| DEF 14A | Proxy statement | Apr 30, 2018 | Jun 13, 2018 |
| 8-K |
Current report
Exit or restructuring costs
|
Apr 24, 2018 | Apr 24, 2018 |
| CT ORDER | Filing | Apr 20, 2018 | — |
| PRE 14A | Preliminary proxy statement | Apr 19, 2018 | Jun 13, 2018 |
| 8-K |
Current report
Other events
|
Apr 16, 2018 | Apr 16, 2018 |
| 10-K | Annual report | Mar 7, 2018 | Dec 31, 2017 |
| 8-K |
Current report
Results of operations
|
Mar 7, 2018 | Mar 7, 2018 |
| 8-K |
Current report
Officer or director change
|
Dec 29, 2017 | Dec 29, 2017 |
| 424B5 | Prospectus supplement | Nov 9, 2017 | — |
| 8-K |
Current report
Other events
|
Nov 9, 2017 | Nov 9, 2017 |
| 10-Q | Quarterly report | Nov 7, 2017 | Sep 30, 2017 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2017 | Nov 7, 2017 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Oct 3, 2017 | Oct 3, 2017 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Sep 12, 2017 | Sep 6, 2017 |
| S-8 | Employee stock plan registration | Aug 10, 2017 | — |
| S-8 | Employee stock plan registration | Aug 10, 2017 | — |
| 10-Q | Quarterly report | Aug 8, 2017 | Jun 30, 2017 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2017 | Aug 8, 2017 |
| 8-K |
Current report
Officer or director change
|
Jul 5, 2017 | Jul 1, 2017 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 16, 2017 | Jun 15, 2017 |
| 10-Q | Quarterly report | May 9, 2017 | Mar 31, 2017 |
| 8-K |
Current report
Results of operations
|
May 9, 2017 | May 9, 2017 |
| DEF 14A | Proxy statement | Apr 28, 2017 | Jun 15, 2017 |
| PRE 14A | Preliminary proxy statement | Apr 17, 2017 | Jun 15, 2017 |
| 10-K | Annual report | Mar 14, 2017 | Dec 31, 2016 |
| 8-K |
Current report
Results of operations
|
Mar 14, 2017 | Mar 14, 2017 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Mar 1, 2017 | Mar 1, 2017 |
| 424B3 | Prospectus | Feb 14, 2017 | — |
| 424B3 | Prospectus | Feb 14, 2017 | — |
| EFFECT | Filing | Feb 13, 2017 | — |
| EFFECT | Filing | Feb 13, 2017 | — |
| CORRESP | Letter to the SEC | Feb 9, 2017 | — |
| CORRESP | Letter to the SEC | Feb 9, 2017 | — |
| S-3/A | Filing | Feb 9, 2017 | — |
| S-3/A | Filing | Feb 9, 2017 | — |
| 8-K/A |
Amended current report
Acquisition or sale of assets
|
Feb 7, 2017 | Nov 29, 2016 |
| UPLOAD | Letter from the SEC | Feb 6, 2017 | — |
| S-3 | Shelf registration | Jan 26, 2017 | — |
| CORRESP | Letter to the SEC | Jan 12, 2017 | — |
| UPLOAD | Letter from the SEC | Jan 5, 2017 | — |
| CORRESP | Letter to the SEC | Jan 4, 2017 | — |
| UPLOAD | Letter from the SEC | Dec 15, 2016 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Dec 14, 2016 | Dec 14, 2016 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Dec 5, 2016 | Nov 29, 2016 |
| S-3 | Shelf registration | Dec 2, 2016 | — |
| D | Filing | Nov 29, 2016 | — |
| 8-K |
Current report
Acquisition or sale of assets, Unregistered share sale, Other events
|
Nov 29, 2016 | Nov 29, 2016 |
| 10-Q | Quarterly report | Nov 7, 2016 | Sep 30, 2016 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2016 | Nov 7, 2016 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
Nov 1, 2016 | Nov 1, 2016 |
| 8-K |
Current report
Officer or director change
|
Aug 11, 2016 | Aug 10, 2016 |
| 10-Q | Quarterly report | Aug 8, 2016 | Jun 30, 2016 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2016 | Aug 8, 2016 |
| 8-K |
Current report
Shareholder vote results
|
Jun 9, 2016 | Jun 8, 2016 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- In Vitro & In Vivo Diagnostic Substances (SIC 2835)
- Listed as
- CLDX (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Hampton, NJ
- SEC filer status
- Large accelerated filer
- SEC CIK
- 744218
- Former names
- AVANT IMMUNOTHERAPEUTICS INC (until Sep 29, 2008); T CELL SCIENCES INC (until Aug 21, 1998)
Other In Vitro & In Vivo Diagnostic Substances companies
- Idexx Laboratories Inc /DE IDXX
- Lantheus Holdings, Inc. LNTH
- Neogen Corp NEOG
- Intellia Therapeutics, Inc. NTLA
- QuidelOrtho Corp QDEL
- Achieve Life Sciences, Inc. ACHV
- Myriad Genetics Inc MYGN
- Alpha Teknova, Inc. TKNO
Source: SEC EDGAR filings. This is company-reported data, not investment advice.