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AGEN 424B3: Secondary offering

Agenus Inc.

Filed with the SEC on · accession 0001193125-26-353143

AGEN filed a 424B3 (prospectus (offering)) with the SEC on Aug 17, 2026. Agenus Inc. filed a prospectus for the resale of up to 77,976,718 shares of common stock by selling securityholders, including shares issuable upon exercise of warrants. The stock moved -2.3% by the first close after the filing.

Summary of the filing

Agenus Inc. filed a prospectus for the resale of up to 77,976,718 shares of common stock by selling securityholders, including shares issuable upon exercise of warrants. The company will not receive any proceeds from the sale of shares by selling securityholders.

For details, click here →How to read a 424B3 →

Key details

Shares offered by selling securityholders$78.0M
Last reported sale price per share$7
IssuerAgenus Inc.

How AGEN stock reacted

Close before

$7.32

Aug 14, 2026

First close after

-2.32%

$7.15

5 trading days

+10.52%

$8.09

Since filing

-12.02%

$6.44

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Frequently asked questions

What did AGEN file with the SEC on Aug 17, 2026?

AGEN filed a 424B3 (Secondary offering). Agenus Inc. filed a prospectus for the resale of up to 77,976,718 shares of common stock by selling securityholders, including shares issuable upon exercise of warrants. The company will not receive any proceeds from the sale of shares by selling securityholders.

What does a secondary offering mean for AGEN stock?

New shares dilute existing holders and are often sold at a discount to the market price.

How do I read a 424B3?

The final terms of an offering of shares or bonds. Look at price, number of shares and the discount to the market price. Large offerings dilute existing shareholders.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A 424B3 (prospectus (offering)): The final terms of an offering of shares or bonds.

How did AGEN stock react to this filing?

AGEN closed at $7.32 before the filing and $7.15 on Aug 17, 2026 (-2.32%). Five trading days later: $8.09 (+10.52%).

Other AGEN SEC filings

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