This DEFA14A filing is additional proxy materials for Rocket Lab USA Inc.'s 2024 Annual Meeting on June 12, 2024, held virtually. Proposals include: (1) election of Class III directors Lt. Gen. Nina M. Armagno (Ret.) and Peter Beck to serve until 2027; (2) ratification of Deloitte & Touche LLP as independent auditors for FY ending December 31, 2024; (3) non-binding advisory vote approving NEO compensation as disclosed in the proxy statement. The board recommends voting FOR all items. No executive compensation trends, shareholder proposals, or board election results are detailed here, as this is a voting notice referencing the full proxy. No beneficial ownership or governance overviews provided in this document.

Routine annual meeting proposals with board endorsement signal standard governance and alignment with shareholders. Uncontested director elections and say-on-pay vote suggest confidence in management without controversy.