MEDIA RELEASE Exhibit 99.1 Rocket Lab Announces First Quarter 2025 Financial Results, Posting Quarterly Revenue of $123m Representing 32% Year-on-Year Growth Long Beach, California. May 8, 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 first quarter ended March 31, 2025. Rocket Lab founder and CEO, Sir Peter Beck, said: "Rocket Lab has delivered a strong first ...