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ILMN 424B2: Secondary offering

Filed with the SEC on · accession 0001193125-26-341332

ILMN filed a 424B2 (prospectus (offering)) with the SEC on Aug 10, 2026. Illumina, Inc. is offering senior notes in an underwritten public offering, with J.P. The stock moved +2.0% by the first close after the filing.

Summary of the filing

Illumina, Inc. is offering senior notes in an underwritten public offering, with J.P. Morgan and Citigroup as joint book-running managers. The notes will be unsecured and unsubordinated obligations, maturing in 20 years, with interest payable semiannually.

For details, click here →How to read a 424B2 →

Key details

aggregate principal amount of notes offered$0
minimum denomination$2K
integral multiples in excess of minimum$1K
IssuerIllumina, Inc.
Joint book-running managerJ.P. Morgan
Joint book-running managerCitigroup

How ILMN stock reacted

Close before

$187.96

Aug 7, 2026

First close after

+2.04%

$191.79

5 trading days

+1.56%

$190.89

Since filing

+13.39%

$213.13

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Frequently asked questions

What did ILMN file with the SEC on Aug 10, 2026?

ILMN filed a 424B2 (Secondary offering). Illumina, Inc. is offering senior notes in an underwritten public offering, with J.P. Morgan and Citigroup as joint book-running managers. The notes will be unsecured and unsubordinated obligations, maturing in 20 years, with interest payable semiannually.

What does a secondary offering mean for ILMN stock?

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

How do I read a 424B2?

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 424B2 (prospectus (offering)): The final terms of an offering of shares or bonds.

How did ILMN stock react to this filing?

ILMN closed at $187.96 before the filing and $191.79 on Aug 10, 2026 (+2.04%). Five trading days later: $190.89 (+1.56%).

Other ILMN SEC filings

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