Long Beach, California. February 27, 2025 – Rocket Lab USA, Inc. (Nasdaq: RKLB) (“Rocket Lab”, “the Company”, “we,” “us,” or “our”), a global leader in launch services and space systems, today shared the financial results for fiscal fourth quarter, ended December 31, 2024.

Rocket Lab founder and CEO, Sir Peter Beck, said: “2024 was a record-setting year for Rocket Lab, with our highest annual revenue ever posted of $436.2 million and a record Q4 2024 revenue of $132.4 million – a 382% increase compared to Q4 2021, our first full quarter following our debut on the Nasdaq as a publicly-traded company. Top achievements across launch and space systems include a record number of 16 launches for Electron in 2024 (a 60% increase in launch cadence compared to 2023) and more than $450 million in newly-secured launch and space systems contracts. We rounded out the year with significant advancement across the Neutron program ahead of a planned debut launch in the second half of 2025. The Company’s strong performance across launch and space systems is foundational to Rocket Lab’s momentum toward delivering its own satellite service as a truly end-to-end space company. This has been bolstered in Q1 2025 with the introduction of our new constellation-class satellite platform designed for mass manufacture, named Flatellite. Applicable to national security, defense, and commercial services, the new satellite also signals a bold, strategic step toward potential paths for operating our own future constellation.”

•Achieved a record year of 16 Electron launches in 2024, up 60% on the year prior, with a booked manifest which supports more than 20 Electron and HASTE launches for 2025 across both single satellite and constellation deployment missions and hypersonic technology test missions.

•Signed a second multi-launch Electron contract in Q1 2025 with Institute for Q-shu Pioneers of Space, Inc. (iQPS), a Japan-based Earth imaging company. Along with an earlier multi-launch contract signed in 2024 with iQPS, the combined contracts represent one of the largest Electron launch agreements to date.

•Selected by Kratos to support a $1.45 billion five-year federal contract for hypersonic flight testing under the MACH-TB 2.0 Contract Award.

•Successfully completed the fourth of five dedicated launches for Kineis in Q1 2025, with Electron expected to launch the fifth and final mission in the coming weeks to complete full constellation deployment in less than a year for the French Internet-of-Things (IoT) constellation operator.

•Revealed details about Rocket Lab’s plans for a new ocean landing platform for Neutron missions returning to Earth. Named ‘Return On Investment,’ the landing platform is expected to open space access further by enabling even more mission opportunities that require maximum Neutron performance.

•Shared progress on Neutron’s development ahead of planned debut launch of the new reusable medium-lift rocket in the second half of 2025.

•Introduced a new low-costsatellite tailored for mass manufacture to serve large satellite constellations. Named Flatellite, the satellite is a scalable and resilient platform that offers high-speed connectivity and remote sensing capabilities. It has been designed to meet the needs of the national security, defense, and commercial markets, and signals a potential next step in Rocket Lab developing, launching and operating its own constellation to deliver data and services from space.

•Celebrated mission success for the latest Rocket Lab Pioneer spacecraft which successfully operated in space, then returned to Earth, Varda’s latest orbital processing and hypersonic reentry mission.

•Rocket Lab’s third Pioneer spacecraft produced for Varda has already been completed and delivered for launch in early March, the second that Rocket Lab has delivered for launch within a month.

•Completed significant program milestones across two Rocket Lab spacecraft programs advancing U.S. national defense: comprehensive multi-day design reviews for Rocket Lab’s 18 spacecraft program for the Space Development Agency’s (SDA) Tranche 2 Transport Layer-Beta (T2TL-Beta) constellation, and for the U.S. Space Force’s VICTUS HAZE program, a $32 million responsive space mission with Electron and Rocket Lab’s own spacecraft that will launch with only 24 hours’ notice.

•Revenue between $117 million and $123 million.

•GAAP Gross Margins between 25% and 27%.

•Non-GAAP Gross Margins between 30% and 32%.

•GAAP Operating Expenses between $93 million and $95 million.

•Non-GAAP Operating Expenses between $77 million and $79 million.

•Expected Interest Expense (Income), net $2.7 million.

•Adjusted EBITDA loss of $33 million and $35 million.

•Basic Weighted Average Common Shares Outstanding of 458 million, excluding approximately 51 million of Series A Convertible Participating Preferred Stock.

Rocket Lab will host a conference call for investors at 2 p.m. PT (5 p.m. ET) today to discuss these business highlights and financial results for our fourth quarter, to provide our outlook for the first quarter, and other updates.

The live webcast and a replay of the webcast will be available on Rocket Lab’s Investor Relations website: https://investors.rocketlabusa.com/events-and-presentations/events + Rocket Lab Investor Relations Contact

Patrick Vorenkamp

investors@rocketlabusa.com

+ Rocket Lab Media Contact

Murielle Baker

media@rocketlabusa.com

Founded in 2006, Rocket Lab is an end-to-end space company with an established track record of mission success. We deliver reliable launch services, satellite manufacture, spacecraft components, and on-orbit management solutions that make it faster, easier, and more affordable to access space. Headquartered in Long Beach, California, Rocket Lab designs and manufactures the Electron small orbital launch vehicle, a family of flight-proven spacecraft, and the Company is developing the large Neutron launch vehicle for constellation deployment. Since its first orbital launch in January 2018, Rocket Lab’s Electron launch vehicle has become the second most frequently launched U.S. rocket annually and has delivered more than 200 satellites to orbit for private and public sector organizations, enabling operations in national security, scientific research, space debris mitigation, Earth observation, climate monitoring, and communications. Rocket Lab’s Photon spacecraft platform has been selected to support NASA missions to the Moon and Mars, as well as the first private commercial mission to Venus. Rocket Lab has three launch pads at two launch sites, including two launch pads at a private orbital launch site located in New Zealand and a third launch pad in Virginia. To learn more, visit www.rocketlabusa.com.

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. We intend such forward-looking statements to be covered by the safe harbor provisions for forward looking statements contained in Section 27A of the Securities Act of 1933, as amended (the “Securities Act”) and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). All statements contained in this press release other than statements of historical fact, including, without limitation, statements regarding our expectations of financial results for the first quarter of 2025, launch and space systems operations, launch schedule and window, safe and repeatable access to space, Neutron development and anticipated timeline to launch, operational expansion and business strategy are forward-looking statements. The words “believe,” “may,” “will,” “estimate,” “potential,” “continue,” “anticipate,” “intend,” “expect,” “strategy,” “future,” “could,” “would,” “project,” “plan,” “target,” and similar expressions are intended to identify forward-looking statements, though not all forward-looking statements use these words or expressions. These statements are neither promises nor guarantees, but involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements, including but not limited to the factors, risks and uncertainties included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2024, as such factors may be updated from time to time in our other filings with the Securities and Exchange Commission (the “SEC”), accessible on the SEC’s website at www.sec.gov and the Investor Relations section of our website at www.rocketlabusa.com, which could cause our actual results to differ materially from those indicated by the forward-looking statements made in this press release. Any such forward-looking statements represent management’s estimates as of the date of this press release. While we may elect to update such forward-looking statements at some point in the future, we disclaim any obligation to do so, even if subsequent events cause our views to change.

+ USE OF NON-GAAP FINANCIAL MEASURES

We supplement the reporting of our financial information determined under Generally Accepted Accounting Principles in the United States of America (“GAAP”) with certain non-GAAP financial information. The non-GAAP financial information presented excludes certain significant items that may not be indicative of, or are unrelated to, results from our ongoing business operations. We believe that these non-GAAP measures provide investors with additional insight into the company's ongoing business performance. These non-GAAP measures should not be considered in isolation or as a substitute for the related GAAP measures, and other companies may define such measures differently. We encourage investors to review our financial statements and publicly filed reports in their entirety and not to rely on any single financial measure. Reconciliation of the non-GAAP financial information to the corresponding GAAP measures for the historical periods disclosed are included at the end of the tables in this press release. We have not provided a reconciliation for forward-looking non-GAAP financial measures because, without unreasonable efforts, we are unable to predict with reasonable certainty the amount and timing of adjustments that are used to calculate these non-GAAP financial measures, particularly related to stock-based compensation and its related tax effects. The following definitions are provided:

+ ADJUSTED EBITDA

EBITDA is defined as earnings before interest, taxes, depreciation and amortization. Adjusted EBITDA further excludes items of income or loss that we characterize as unrepresentative of our ongoing operations. Such items are excluded from net income or loss to determine Adjusted EBITDA. Management believes this measure provides investors meaningful insight into results from ongoing operations.

+ OTHER NON-GAAP FINANCIAL MEASURES

Non-GAAP gross profit, research and development, net, selling, general and administrative, operating expenses, operating loss and total other income (expense), net, further excludes items of income or loss that we characterize as unrepresentative of our ongoing operations. Such items are excluded from the applicable GAAP financial measure. Management believes these non-GAAP measures provide investors meaningful insight into results from ongoing operations.

The tables provided below reconcile the non-GAAP financial measures Adjusted EBITDA, Non-GAAP gross profit, Non-GAAP research and development, net, Non-GAAP selling, general and administrative, Non-GAAP operating expenses, Non-GAAP operating loss and Non-GAAP total other income (expense), net with the most directly comparable GAAP financial measures. See above for additional information on the use of these non-GAAP financial measures.