Rocket Lab Corp (RKLB) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-05-28 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Rocket Lab Corp (RKLB) CIK: 0001819994 --- Reporting Owner --- Name: Clevenger Marvin Bradford CIK: 0002127567 Role: Officer (President, Rocket Lab USA, Inc) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-05-28 | Code: S (Open market sale) Shares: -3,500 | Price: $146.67 Total Value: $513,355.85 Shares Owned After: 473,975 | Ownership: D (Direct) Footnotes: [F1] The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $146.6000 to $146.7800. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. --- Footnotes (Complete Index) --- F1: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $146.6000 to $146.7800. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. --- Signature --- /s/ By: /s/ Arjun Kampani, as Attorney-in-Fact For: Marvin B. Clevenger (2026-06-01)