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ASTC 424B5: Secondary offering

Astrotech Corporation

Filed with the SEC on · accession 0001437749-26-028568

ASTC filed a 424B5 (prospectus (offering)) with the SEC on Aug 19, 2026. Astrotech Corporation filed a prospectus supplement to increase its at-the-market offering of common stock to $50 million, with H.C. The stock moved +0.1% by the first close after the filing.

Summary of the filing

Astrotech Corporation filed a prospectus supplement to increase its at-the-market offering of common stock to $50 million, with H.C. Wainwright & Co. as sales agent. As of the filing date, 258,856 shares had been sold for gross proceeds of approximately $7.9 million.

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Key details

Maximum aggregate gross offering price$50.0M
Gross proceeds from prior sales$7.9M
Sales agent commission rate$3
IssuerAstrotech Corporation
Sales agent/underwriterH.C. Wainwright & Co., LLC

How ASTC stock reacted

Close before

$7.93

Aug 18, 2026

First close after

+0.13%

$7.94

5 trading days

-10.47%

$7.10

Since filing

-47.04%

$4.20

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Frequently asked questions

What did ASTC file with the SEC on Aug 19, 2026?

ASTC filed a 424B5 (Secondary offering). Astrotech Corporation filed a prospectus supplement to increase its at-the-market offering of common stock to $50 million, with H.C. Wainwright & Co. as sales agent. As of the filing date, 258,856 shares had been sold for gross proceeds of approximately $7.9 million.

What does a secondary offering mean for ASTC 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 ASTC stock react to this filing?

ASTC closed at $7.93 before the filing and $7.94 on Aug 19, 2026 (+0.13%). Five trading days later: $7.10 (-10.47%).

Other ASTC SEC filings

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