Company · CIK 1098972 # AGENUS INC | CIK | [1098972](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001098972) (SEC EDGAR) | | --- | --- | | Industry (SIC) | 2836 — Biological Products, (No Diagnostic Substances) | | Incorporated in | DE | | Business address | MA | | Listed | AGEN (Nasdaq) | | First annual or quarterly report | 2000-05-15 | ## Offerings 36 registrations | Registration | Label and status | First filed | Last event | Filings | | --- | --- | --- | --- | --- | | 333-298893 | Shelf Filed | 2026-09-11 | 2026-09-11 | 1 | | 333-298111 | Shelf Effective | 2026-08-07 | 2026-08-14 | 2 | | 333-297556 | Shelf Effective | 2026-07-20 | 2026-07-27 | 2 | | 333-292466 | Shelf Effective | 2025-12-29 | 2025-12-29 | 1 | | 333-287197 | Shelf Effective | 2025-05-12 | 2025-05-30 | 2 | | 333-272911 | Shelf Effective | 2023-06-23 | 2024-08-08 | 3 | | 333-268988 | Shelf Effective | 2022-12-23 | 2022-12-23 | 1 | | 333-240006 | Shelf Effective | 2020-07-22 | 2022-03-01 | 2 | | 333-261032 | Shelf Effective | 2021-11-12 | 2021-11-12 | 1 | | 333-234333 | Shelf Effective | 2019-10-25 | 2019-11-22 | 2 | | 333-222670 | Shelf Withdrawn | 2018-01-24 | 2018-12-21 | 2 | | 333-221008 | Shelf Effective | 2017-10-18 | 2018-12-19 | 4 | | 333-228273 | Shelf Effective | 2018-11-08 | 2018-12-10 | 2 | | 333-221465 | Shelf Effective | 2017-11-09 | 2018-01-19 | 2 | | 333-215640 | Shelf Effective | 2017-01-20 | 2017-03-31 | 2 | | 333-209941 | Shelf Effective | 2016-03-04 | 2016-05-17 | 2 | | 333-208890 | Shelf Effective | 2016-01-06 | 2016-04-28 | 2 | | 333-209749 | Shelf Effective | 2016-02-26 | 2016-04-28 | 2 | | 333-208135 | Shelf Effective | 2015-11-20 | 2016-01-05 | 2 | | 333-206513 | Shelf Effective | 2015-08-21 | 2015-09-10 | 2 | | 333-203807 | Shelf Effective | 2015-05-01 | 2015-06-08 | 2 | | 333-199255 | Shelf Effective | 2014-10-10 | 2015-05-21 | 4 | | 333-195852 | Shelf Effective | 2014-05-09 | 2014-06-18 | 2 | | 333-185657 | Shelf Effective | 2012-12-21 | 2014-02-06 | 5 | | 333-189534 | Shelf Effective | 2013-06-21 | 2013-07-02 | 2 | | 333-149116 | Shelf Final prospectus | 2008-02-08 | 2013-01-22 | 5 | | 333-150326 | Shelf Effective | 2008-04-18 | 2013-01-22 | 4 | | 333-156556 | Registered company Effective | 2009-01-02 | 2013-01-22 | 5 | | 333-164481 | Shelf Effective | 2010-01-22 | 2012-03-02 | 6 | | 333-163221 | Shelf Effective | 2009-11-19 | 2009-12-11 | 2 | | 333-161277 | Registered company Effective | 2009-08-12 | 2009-10-20 | 3 | | 333-151244 | Shelf Effective | 2008-05-29 | 2008-07-10 | 3 | | 333-118175 | Shelf Effective | 2004-08-12 | 2008-06-25 | 5 | | 333-125197 | Shelf Effective | 2005-05-24 | 2007-01-29 | 2 | | 333-118171 | Shelf Dormant | 2004-08-12 | 2004-08-12 | 1 | | 333-104832 | Shelf Effective | 2003-04-29 | 2004-02-03 | 3 | ## Filings 96 | Filed | Filing | Registration | Accession | | --- | --- | --- | --- | | 2026-09-11 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312526389364/0001193125-26-389364-index.htm) Shelf registered | 333-298893 | 0001193125-26-389364 | | 2026-08-14 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999526002670/9999999995-26-002670-index.htm) Declared effective | 333-298111 | 9999999995-26-002670 | | 2026-08-07 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312526340213/0001193125-26-340213-index.htm) Shelf registered | 333-298111 | 0001193125-26-340213 | | 2026-07-27 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999526002467/9999999995-26-002467-index.htm) Declared effective | 333-297556 | 9999999995-26-002467 | | 2026-07-20 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312526308110/0001193125-26-308110-index.htm) Shelf registered | 333-297556 | 0001193125-26-308110 | | 2025-12-29 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/1098972/000119312525335494/0001193125-25-335494-index.htm) Shelf registered | 333-292466 | 0001193125-25-335494 | | 2025-05-30 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999525001798/9999999995-25-001798-index.htm) Declared effective | 333-287197 | 9999999995-25-001798 | | 2025-05-12 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312525117894/0001193125-25-117894-index.htm) Shelf registered | 333-287197 | 0001193125-25-117894 | | 2024-08-08 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000119312524197037/0001193125-24-197037-index.htm) Shelf takedown | 333-272911 | 0001193125-24-197037 | | 2024-03-18 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999524000675/9999999995-24-000675-index.htm) Declared effective | 333-272911 | 9999999995-24-000675 | | 2023-06-23 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/1098972/000119312523173986/0001193125-23-173986-index.htm) Shelf registered | 333-272911 | 0001193125-23-173986 | | 2022-12-23 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/1098972/000119312522311775/0001193125-22-311775-index.htm) Shelf registered | 333-268988 | 0001193125-22-311775 | | 2022-03-01 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000119312522059911/0001193125-22-059911-index.htm) Shelf takedown | 333-240006 | 0001193125-22-059911 | | 2021-11-12 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/1098972/000119312521328156/0001193125-21-328156-index.htm) Shelf registered | 333-261032 | 0001193125-21-328156 | | 2020-07-22 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/1098972/000119312520196970/0001193125-20-196970-index.htm) Shelf registered | 333-240006 | 0001193125-20-196970 | | 2019-11-22 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999519002647/9999999995-19-002647-index.htm) Declared effective | 333-234333 | 9999999995-19-002647 | | 2019-10-25 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312519274828/0001193125-19-274828-index.htm) Shelf registered | 333-234333 | 0001193125-19-274828 | | 2018-12-21 | [RW](https://www.sec.gov/Archives/edgar/data/1098972/000119312518356524/0001193125-18-356524-index.htm) Withdrawn | 333-222670 | 0001193125-18-356524 | | 2018-12-19 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000119312518353251/0001193125-18-353251-index.htm) Shelf takedown | 333-221008 | 0001193125-18-353251 | | 2018-12-10 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999518003081/9999999995-18-003081-index.htm) Declared effective | 333-228273 | 9999999995-18-003081 | | 2018-11-08 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312518322570/0001193125-18-322570-index.htm) Shelf registered | 333-228273 | 0001193125-18-322570 | | 2018-05-11 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000119312518160890/0001193125-18-160890-index.htm) Shelf takedown | 333-221008 | 0001193125-18-160890 | | 2018-01-24 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312518018402/0001193125-18-018402-index.htm) Shelf registered | 333-222670 | 0001193125-18-018402 | | 2018-01-19 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999518000163/9999999995-18-000163-index.htm) Declared effective | 333-221465 | 9999999995-18-000163 | | 2017-11-09 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312517338792/0001193125-17-338792-index.htm) Shelf registered | 333-221465 | 0001193125-17-338792 | | 2017-10-30 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999517002816/9999999995-17-002816-index.htm) Declared effective | 333-221008 | 9999999995-17-002816 | | 2017-10-18 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312517312786/0001193125-17-312786-index.htm) Shelf registered | 333-221008 | 0001193125-17-312786 | | 2017-03-31 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999517000713/9999999995-17-000713-index.htm) Declared effective | 333-215640 | 9999999995-17-000713 | | 2017-01-20 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312517014162/0001193125-17-014162-index.htm) Shelf registered | 333-215640 | 0001193125-17-014162 | | 2016-05-17 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999516004687/9999999995-16-004687-index.htm) Declared effective | 333-209941 | 9999999995-16-004687 | | 2016-04-28 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999516004370/9999999995-16-004370-index.htm) Declared effective | 333-209749 | 9999999995-16-004370 | | 2016-04-28 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999516004365/9999999995-16-004365-index.htm) Declared effective | 333-208890 | 9999999995-16-004365 | | 2016-03-04 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312516493438/0001193125-16-493438-index.htm) Shelf registered | 333-209941 | 0001193125-16-493438 | | 2016-02-26 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312516481907/0001193125-16-481907-index.htm) Shelf registered | 333-209749 | 0001193125-16-481907 | | 2016-01-06 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312516422502/0001193125-16-422502-index.htm) Shelf registered | 333-208890 | 0001193125-16-422502 | | 2016-01-05 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999516003469/9999999995-16-003469-index.htm) Declared effective | 333-208135 | 9999999995-16-003469 | | 2015-11-20 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312515383676/0001193125-15-383676-index.htm) Shelf registered | 333-208135 | 0001193125-15-383676 | | 2015-09-10 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999515002483/9999999995-15-002483-index.htm) Declared effective | 333-206513 | 9999999995-15-002483 | | 2015-08-21 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312515299005/0001193125-15-299005-index.htm) Shelf registered | 333-206513 | 0001193125-15-299005 | | 2015-06-08 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999515001555/9999999995-15-001555-index.htm) Declared effective | 333-203807 | 9999999995-15-001555 | | 2015-05-21 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000119312515197150/0001193125-15-197150-index.htm) Shelf takedown | 333-199255 | 0001193125-15-197150 | | 2015-05-20 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000119312515195077/0001193125-15-195077-index.htm) Shelf takedown | 333-199255 | 0001193125-15-195077 | | 2015-05-01 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312515166520/0001193125-15-166520-index.htm) Shelf registered | 333-203807 | 0001193125-15-166520 | | 2014-10-23 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999514003130/9999999995-14-003130-index.htm) Declared effective | 333-199255 | 9999999995-14-003130 | | 2014-10-10 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312514369144/0001193125-14-369144-index.htm) Shelf registered | 333-199255 | 0001193125-14-369144 | | 2014-06-18 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999514001816/9999999995-14-001816-index.htm) Declared effective | 333-195852 | 9999999995-14-001816 | | 2014-05-09 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312514192720/0001193125-14-192720-index.htm) Shelf registered | 333-195852 | 0001193125-14-192720 | | 2014-02-06 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000119312514037243/0001193125-14-037243-index.htm) Shelf takedown | 333-185657 | 0001193125-14-037243 | | 2014-02-04 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000119312514034991/0001193125-14-034991-index.htm) Shelf takedown | 333-185657 | 0001193125-14-034991 | | 2013-09-19 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000119312513371148/0001193125-13-371148-index.htm) Shelf takedown | 333-185657 | 0001193125-13-371148 | | 2013-07-02 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999513001990/9999999995-13-001990-index.htm) Declared effective | 333-189534 | 9999999995-13-001990 | | 2013-06-21 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312513267582/0001193125-13-267582-index.htm) Shelf registered | 333-189534 | 0001193125-13-267582 | | 2013-01-22 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999513000235/9999999995-13-000235-index.htm) Declared effective | 333-156556 | 9999999995-13-000235 | | 2013-01-22 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999513000234/9999999995-13-000234-index.htm) Declared effective | 333-150326 | 9999999995-13-000234 | | 2013-01-22 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999513000233/9999999995-13-000233-index.htm) Declared effective | 333-149116 | 9999999995-13-000233 | | 2013-01-10 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999513000162/9999999995-13-000162-index.htm) Declared effective | 333-185657 | 9999999995-13-000162 | | 2012-12-21 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312512513332/0001193125-12-513332-index.htm) Shelf registered | 333-185657 | 0001193125-12-513332 | | 2012-03-02 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000119312512094749/0001193125-12-094749-index.htm) Shelf takedown | 333-164481 | 0001193125-12-094749 | | 2011-08-11 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000119312511218914/0001193125-11-218914-index.htm) Shelf takedown | 333-164481 | 0001193125-11-218914 | | 2010-12-13 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000119312510279502/0001193125-10-279502-index.htm) Shelf takedown | 333-164481 | 0001193125-10-279502 | | 2010-03-01 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000119312510044573/0001193125-10-044573-index.htm) Shelf takedown | 333-164481 | 0001193125-10-044573 | | 2010-02-03 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999510000419/9999999995-10-000419-index.htm) Declared effective | 333-164481 | 9999999995-10-000419 | | 2010-01-22 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312510010954/0001193125-10-010954-index.htm) Shelf registered | 333-164481 | 0001193125-10-010954 | | 2009-12-11 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999509003453/9999999995-09-003453-index.htm) Declared effective | 333-163221 | 9999999995-09-003453 | | 2009-11-19 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312509238499/0001193125-09-238499-index.htm) Shelf registered | 333-163221 | 0001193125-09-238499 | | 2009-10-20 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999509002900/9999999995-09-002900-index.htm) Declared effective | 333-161277 | 9999999995-09-002900 | | 2009-08-21 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1098972/000119312509179675/0001193125-09-179675-index.htm) Amendment | 333-161277 | 0001193125-09-179675 | | 2009-08-12 | [S-1](https://www.sec.gov/Archives/edgar/data/1098972/000119312509172722/0001193125-09-172722-index.htm) Registration filed | 333-161277 | 0001193125-09-172722 | | 2009-03-18 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999509000655/9999999995-09-000655-index.htm) Declared effective | 333-156556 | 9999999995-09-000655 | | 2009-03-18 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999509000653/9999999995-09-000653-index.htm) Declared effective | 333-150326 | 9999999995-09-000653 | | 2009-03-18 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999509000652/9999999995-09-000652-index.htm) Declared effective | 333-149116 | 9999999995-09-000652 | | 2009-03-16 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1098972/000119312509055415/0001193125-09-055415-index.htm) Amendment | 333-156556 | 0001193125-09-055415 | | 2009-01-27 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1098972/000119312509012095/0001193125-09-012095-index.htm) Amendment | 333-156556 | 0001193125-09-012095 | | 2009-01-02 | [S-1](https://www.sec.gov/Archives/edgar/data/1098972/000119312509000362/0001193125-09-000362-index.htm) Registration filed | 333-156556 | 0001193125-09-000362 | | 2008-07-10 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000119312508149182/0001193125-08-149182-index.htm) Shelf takedown | 333-151244 | 0001193125-08-149182 | | 2008-06-25 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999508002021/9999999995-08-002021-index.htm) Declared effective | 333-151244 | 9999999995-08-002021 | | 2008-06-25 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999508002011/9999999995-08-002011-index.htm) Declared effective | 333-118175 | 9999999995-08-002011 | | 2008-05-29 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312508124530/0001193125-08-124530-index.htm) Shelf registered | 333-151244 | 0001193125-08-124530 | | 2008-05-07 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999508001481/9999999995-08-001481-index.htm) Declared effective | 333-150326 | 9999999995-08-001481 | | 2008-04-18 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312508084842/0001193125-08-084842-index.htm) Shelf registered | 333-150326 | 0001193125-08-084842 | | 2008-03-14 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000119312508057499/0001193125-08-057499-index.htm) Shelf takedown | 333-118175 | 0001193125-08-057499 | | 2008-02-15 | [424B1](https://www.sec.gov/Archives/edgar/data/1098972/000119312508032163/0001193125-08-032163-index.htm) Final prospectus | 333-149116 | 0001193125-08-032163 | | 2008-02-14 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999508000583/9999999995-08-000583-index.htm) Declared effective | 333-149116 | 9999999995-08-000583 | | 2008-02-08 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000119312508024118/0001193125-08-024118-index.htm) Shelf registered | 333-149116 | 0001193125-08-024118 | | 2007-09-05 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000119312507195604/0001193125-07-195604-index.htm) Shelf takedown | 333-118175 | 0001193125-07-195604 | | 2007-05-03 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999507001719/9999999995-07-001719-index.htm) Declared effective | 333-118175 | 9999999995-07-001719 | | 2007-04-23 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999507001433/9999999995-07-001433-index.htm) Declared effective | 333-69582 | 9999999995-07-001433 | | 2007-01-29 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1098972/999999999507000332/9999999995-07-000332-index.htm) Declared effective | 333-125197 | 9999999995-07-000332 | | 2005-05-24 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000095013505003022/0000950135-05-003022-index.htm) Shelf registered | 333-125197 | 0000950135-05-003022 | | 2004-08-12 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000095013504003962/0000950135-04-003962-index.htm) Shelf registered | 333-118175 | 0000950135-04-003962 | | 2004-08-12 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000095013504003961/0000950135-04-003961-index.htm) Shelf registered | 333-118171 | 0000950135-04-003961 | | 2004-02-03 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000119312504013721/0001193125-04-013721-index.htm) Shelf takedown | 333-104832 | 0001193125-04-013721 | | 2004-01-26 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000119312504008561/0001193125-04-008561-index.htm) Shelf takedown | 333-104832 | 0001193125-04-008561 | | 2003-04-29 | [S-3](https://www.sec.gov/Archives/edgar/data/1098972/000095013503002669/0000950135-03-002669-index.htm) Shelf registered | 333-104832 | 0000950135-03-002669 | | 2003-01-23 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000095013503000328/0000950135-03-000328-index.htm) Shelf takedown | 333-90380 | 0000950135-03-000328 | | 2003-01-08 | [424B5](https://www.sec.gov/Archives/edgar/data/1098972/000095013503000096/0000950135-03-000096-index.htm) Shelf takedown | 333-90380 | 0000950135-03-000096 | [All filings of this company](https://equitycapital.markets/filings?cik=1098972) · [CSV](https://equitycapital.markets/filings.csv?cik=1098972) --- Source page: https://equitycapital.markets/company/1098972 · Data: U.S. SEC EDGAR · CC BY 4.0