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RKLB 424B3: Acquisition

Filed with the SEC on · accession 0001753926-26-001639

RKLB filed a 424B3 (prospectus (offering)) with the SEC on Aug 26, 2026. Rocket Lab Corp is acquiring Iridium Communications Inc. in a cash-and-stock merger valued at $27.00 per share in cash plus a variable stock component, with the exchange ratio ranging from 0.2400 to 0.4000 shares of Rocket Lab common stock per Iridium share depending on Rocket Lab's stock price. The stock moved -1.1% by the first close after the filing.

Summary of the filing

Rocket Lab Corp is acquiring Iridium Communications Inc. in a cash-and-stock merger valued at $27.00 per share in cash plus a variable stock component, with the exchange ratio ranging from 0.2400 to 0.4000 shares of Rocket Lab common stock per Iridium share depending on Rocket Lab's stock price. The transaction requires Iridium stockholder approval and is expected to close after a special meeting on September 24, 2026.

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

Key details

Cash consideration per Iridium share$27
Exchange ratio lower bound (if Rocket Lab stock price >= $112.50)$0
Exchange ratio upper bound (if Rocket Lab stock price <= $67.50)$0
AcquirerRocket Lab Corp
TargetIridium Communications Inc.
Chief executive officer of iridium communications inc.Matthew J. Desch

How RKLB stock reacted

Close before

$66.91

Aug 25, 2026

First close after

-1.09%

$66.18

5 trading days

-6.53%

$62.54

Since filing

-12.03%

$58.86

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Frequently asked questions

What did RKLB file with the SEC on Aug 26, 2026?

RKLB filed a 424B3 (Acquisition). Rocket Lab Corp is acquiring Iridium Communications Inc. in a cash-and-stock merger valued at $27.00 per share in cash plus a variable stock component, with the exchange ratio ranging from 0.2400 to 0.4000 shares of Rocket Lab common stock per Iridium share depending on Rocket Lab's stock price. The transaction requires Iridium stockholder approval and is expected to close after a special meeting on September 24, 2026.

What does a acquisition mean for RKLB stock?

A contract important enough that investors need to know about it — a big customer contract, a loan, a merger agreement or a partnership.

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 RKLB stock react to this filing?

RKLB closed at $66.91 before the filing and $66.18 on Aug 26, 2026 (-1.09%). Five trading days later: $62.54 (-6.53%).

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