(Mark One)QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the quarterly period ended June30, 2026OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the transition period from___________toCommission File Number: 001-39560_________________________________________________________ ROCKET LAB CORPORATION (Exact Name of Registrant as Specified in its Charter)_________________________________________________________ Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during thepreceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90days.YesNo Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T(§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).YesNo Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growthcompany. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of theExchange Act. If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revisedfinancial accounting standards provided pursuant to Section 13(a) of the Exchange Act. Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).YesNo As of August5, 2026, the registrant had 598,350,482 shares of common stock, $0.0001 par value per share, outstanding. CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS Certain statements in this Quarterly Report on Form 10-Q may constitute “forward-looking statements” for purposes of thefederal securities laws. The information included in this Quarterly Report on Form 10-Q has been provided by us and ourmanagement, and such forward-looking statements include statements relating to the expectations, hopes, beliefs, intentions orstrategies regarding the future of Rocket Lab Corporation and its consolidated subsidiaries (the “Company” or "Rocket Lab") and itsmanagement team. In addition, any statements that refer to projections, forecasts or other characterizations of future events orcircumstances, including any underlying assumptions, are forward-looking statements. The words “anticipate,” “believe,” “could,”“estimate,” “expect,” “intends,” “may,” “might,” “plan,” “potential,” “predict,” “project,” “should,” “will,” “would” and similarexpressions may identify forward-looking statements, but the absence of these words does not mean that a statement is not forward-looking. The forward-looking statements contained in this Quarterly Report on Form 10-Q are based on current expectations andbeliefs concerning future developments and their potential effects on Rocket Lab. There can be no assurance that future developmentsaffecting us will be those that we have anticipated. These forward-looking statements involve a number of risks, uncertainties (some ofwhich are beyond our control) or other assumptions that may cause actual results or performance to be materially different from thoseexpressed or implied by these forward-looking statements. These risks and uncertainties include, but are not limited to, those factorsdescribed below and under the heading “Risk Factors.” •Our ability to effectively manage future growth and achieve operational efficiencies;•any inability of us to operate our Electron Launch Vehicle (“Electron”) at its anticipated launch rate, including due to anygovernment action related to launch failure and our ability to operate, could adversely impact our business, financialcondition and results of operations;•our inability to develop our Neutron Launch Vehicle (“Neutron”) or significant delays in developing Neutron couldadversely impact our business, financial condition and results of operations;•risks and uncertainties associated with the Iridium Transaction (as defined below);•success in retaining or recruiting, or changes required in, officers, key employees or directors, and our ability to attract andretain key personnel, including Sir Peter Beck, our President, Chief Executive Officer and Chairman;•our inability to utilize our launch pads at our private launch complex in Mahia, New Zealand or at NASA’s Wallops FlightFacility, at Wallops Island, Virginia with sufficient frequency to support our launch cadence and future related revenuegrowth expectations could adversely impact our business, financial condition and results of operatio