Rocket Lab Reports Fresh Progress Toward Iridium Acquisition

Rocket Lab said Thursday that its proposed acquisition of Iridium Communications has cleared an important U.S. antitrust waiting-period hurdle, while the companies have also advanced securities and communications-regulatory filings needed for the transaction.

The waiting period under the Hart-Scott-Rodino Act expired at 11:59 p.m. Eastern Time on August 12, Rocket Lab said. The company filed a Form S-4 registration statement with the Securities and Exchange Commission on August 13, and Rocket Lab and Iridium submitted applications to the Federal Communications Commission on August 10 seeking consent to transfer control of Iridium’s licenses and authorizations.

The developments move the roughly $8 billion transaction further into its approval and financing process, but they do not mean the acquisition is complete. Rocket Lab’s August 13 filing says the S-4 is not yet effective, FCC consent is still being sought, and the deal remains subject to other closing conditions.

Antitrust waiting period expires, but key approvals remain

The expiration of the HSR waiting period removes one procedural barrier to closing. Under the federal premerger notification system, parties to certain large transactions must notify the Federal Trade Commission and Justice Department and wait for the statutory review period before they can complete a deal. The FTC notes that expiration of the waiting period allows the parties to move past that requirement, although it does not prevent a later antitrust challenge.

Rocket Lab described the lapse as U.S. antitrust clearance for purposes of the transaction timeline. That milestone is distinct from the other approvals still required. The FCC must consider the applications related to the transfer of Iridium’s communications licenses and authorizations, which are central to a business built around a global satellite network and coordinated spectrum rights.

The S-4 is another required piece of the process because part of the consideration for Iridium shareholders will be paid in Rocket Lab stock. The registration statement includes Iridium’s preliminary proxy statement and will also serve as a Rocket Lab prospectus. Once the registration statement becomes effective and the proxy materials are finalized, Iridium shareholders are expected to receive the documents ahead of a vote on the transaction.

The original merger agreement also conditions closing on Iridium shareholder approval and other specified regulatory clearances. Rocket Lab and Iridium said when they announced the transaction in June that they expected it to close in mid-2027, assuming those conditions are satisfied.

Rocket Lab is reshaping the financing plan

The regulatory update came alongside new details on how Rocket Lab plans to finance the cash portion of the acquisition. When the companies signed the merger agreement, Rocket Lab secured commitments for a $3.6 billion, 364-day senior secured bridge term loan facility from Deutsche Bank and Wells Fargo. Rocket Lab now says it intends to replace those bridge commitments with a combination of longer-term debt and equity financing.

One part of that plan involves Iridium’s existing term loan. Rocket Lab said the companies intend to seek amendments that would allow Iridium’s term loan facility, which had $1.775 billion outstanding as of June 30, to remain in place after the acquisition. If lenders consent, Rocket Lab said that could reduce the amount it needs under the bridge facility at rates it described as more attractive than the bridge terms. The company cautioned that lender approval has not been obtained and there is no assurance the amendments will be completed.

Rocket Lab also launched a replacement at-the-market equity program on Thursday covering up to $1.944 billion of common stock. The new agreement carries forward the unsold amount under the company’s May 2026 program rather than increasing the aggregate amount available for sale. Rocket Lab said it currently intends to use all or part of any net proceeds to fund cash payments for the Iridium acquisition and reduce commitments under the bridge facility.

The ATM program gives Rocket Lab flexibility to issue shares over time at prevailing or negotiated prices, but it does not require the company to sell any specific amount. The company also said the program is not conditioned on the Iridium transaction closing. If the deal does not close, or if Rocket Lab raises more than it ultimately needs for the acquisition, the company says proceeds could instead support future growth, acquisitions, working capital and other corporate purposes.

For existing Rocket Lab shareholders, use of the ATM program could increase the number of shares outstanding if the company sells stock under it. The amount of any dilution cannot be determined in advance because Rocket Lab has not committed to a specific number of shares or sale price.

The deal would move Rocket Lab deeper into satellite services

Rocket Lab agreed in June to acquire Iridium for a notional $54 per share in cash and stock, representing an enterprise value of about $8 billion. Iridium shareholders are due to receive $27 in cash plus Rocket Lab shares with a notional value of another $27, subject to a collar tied to Rocket Lab’s share price before closing.

The strategic significance of the deal goes beyond adding another satellite business. Rocket Lab already builds launch vehicles, spacecraft and satellite components. Iridium operates a global low-Earth-orbit communications network and holds coordinated L-band spectrum used across government, maritime, aviation, Internet of Things and other communications markets. Bringing the businesses together would give Rocket Lab ownership of both space hardware and an operating communications network.

Rocket Lab has presented that combination as a way to extend its business from launch and spacecraft manufacturing into recurring space-based services. At the time the acquisition was announced, the companies said Iridium served more than 2.55 million active subscribers worldwide. They also reported that Iridium generated $871.7 million of revenue and $495 million of operational EBITDA in 2025, figures Rocket Lab used to illustrate the scale and cash-flow profile it expects Iridium to add.

The acquisition would also give Rocket Lab a direct role in maintaining and eventually upgrading Iridium’s constellation. Management has argued that owning launch, spacecraft production and the communications network could reduce reliance on outside suppliers and support future services such as direct-to-device connectivity and resilient positioning, navigation and timing. Those benefits remain projections until the transaction closes and the companies execute the integration.

Thursday’s update shows that several pieces of the closing process are now moving in parallel: the HSR waiting period has expired, the preliminary proxy and prospectus process has begun at the SEC, FCC transfer applications are on file, and Rocket Lab is working on permanent financing alternatives to its bridge commitments. The next major steps include SEC effectiveness of the S-4, completion of the shareholder-vote process and action on the remaining regulatory applications before the companies can reach the closing they continue to target for 2027.