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BBNX 424B5: Secondary offering

Beta Bionics, Inc.

Filed with the SEC on · accession 0001193125-26-393320

BBNX filed a 424B5 (prospectus (offering)) with the SEC on Sep 17, 2026. Beta Bionics, Inc. filed a prospectus supplement for a public offering of 7,652,175 shares of common stock and pre-funded warrants to purchase up to 1,043,484 shares, with an option for underwriters to purchase an additional 1,304,348 shares. The stock moved -3.4% by the first close after the filing.

Summary of the filing

Beta Bionics, Inc. filed a prospectus supplement for a public offering of 7,652,175 shares of common stock and pre-funded warrants to purchase up to 1,043,484 shares, with an option for underwriters to purchase an additional 1,304,348 shares. The offering price is $17.25 per share and $17.2499 per pre-funded warrant, with total proceeds expected to be approximately $141 million before expenses.

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Key details

Total public offering value$150.0M
Underwriting discounts and commissions$9.0M
Proceeds to company before expenses$141.0M
IssuerBeta Bionics, Inc.
UnderwriterJ.P. Morgan
UnderwriterPiper Sandler
UnderwriterWells Fargo Securities
UnderwriterLeerink Partners

How BBNX stock reacted

Close before

$22.18

Sep 16, 2026

First close after

-3.38%

$21.43

5 trading days

+0.05%

$22.19

Since filing

-29.22%

$15.70

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Frequently asked questions

What did BBNX file with the SEC on Sep 17, 2026?

BBNX filed a 424B5 (Secondary offering). Beta Bionics, Inc. filed a prospectus supplement for a public offering of 7,652,175 shares of common stock and pre-funded warrants to purchase up to 1,043,484 shares, with an option for underwriters to purchase an additional 1,304,348 shares. The offering price is $17.25 per share and $17.2499 per pre-funded warrant, with total proceeds expected to be approximately $141 million before expenses.

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

BBNX closed at $22.18 before the filing and $21.43 on Sep 17, 2026 (-3.38%). Five trading days later: $22.19 (+0.05%).

Other BBNX SEC filings

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