ALTO 424B5: Secondary offering

Alto Ingredients, Inc.

Filed with the SEC on · accession 0001213900-26-085660

ALTO filed a 424B5 (prospectus (offering)) with the SEC on Aug 5, 2026. Alto Ingredients, Inc. filed a prospectus supplement for an at-the-market offering of up to $50 million of its common stock through agents Craig-Hallum, Benchmark, and H.C. The stock moved -4.3% by the first close after the filing.

Summary of the filing

Alto Ingredients, Inc. filed a prospectus supplement for an at-the-market offering of up to $50 million of its common stock through agents Craig-Hallum, Benchmark, and H.C. Wainwright.

Key details

Maximum aggregate offering amount of common stock$50.0M
Agent compensation rate$3
IssuerAlto Ingredients, Inc.
Sales agentCraig-Hallum Capital Group LLC
Sales agentThe Benchmark Company, LLC
Sales agentH.C. Wainwright & Co., LLC

How ALTO stock reacted

Close before

$5.29

Aug 4, 2026

First close after

-4.35%

$5.06

5 trading days

-21.17%

$4.17

Since filing

-29.30%

$3.74

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Frequently asked questions

What did ALTO file with the SEC on Aug 5, 2026?

ALTO filed a 424B5 (Secondary offering). Alto Ingredients, Inc. filed a prospectus supplement for an at-the-market offering of up to $50 million of its common stock through agents Craig-Hallum, Benchmark, and H.C. Wainwright.

What does a secondary offering mean for ALTO stock?

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

How do I read a 424B5?

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 424B5 (prospectus (offering)): The final terms of an offering of shares or bonds.

How did ALTO stock react to this filing?

ALTO closed at $5.29 before the filing and $5.06 on Aug 5, 2026 (-4.35%). Five trading days later: $4.17 (-21.17%).

Other ALTO SEC filings

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