Rocket Lab (RKLB)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-08-31 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Rocket Lab Corp (RKLB) CIK: 0001819994 --- Reporting Owner --- Name: Saintil Merline CIK: 0001699497 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-08-31 | Code: G (Gift) Shares: -261,903 | Price: $0.00 Shares Owned After: 2,482 | Ownership: D (Direct) Footnotes: [F1] Represents shares transferred by the Reporting Person, without consideration, to the Reporting Person's revocable living trust, of which the Reporting Person is a trustee and the Reporting Person and her immediate family are beneficiaries, for estate planning purposes. The Reporting Person retains an indirect pecuniary interest in the shares. [Transaction #2] Security: Common Stock Date: 2026-08-31 | Code: G (Gift) Shares: +261,903 | Price: $0.00 Shares Owned After: 261,903 | Ownership: I (Indirect) | Nature: by Trust Footnotes: [F1] Represents shares transferred by the Reporting Person, without consideration, to the Reporting Person's revocable living trust, of which the Reporting Person is a trustee and the Reporting Person and her immediate family are beneficiaries, for estate planning purposes. The Reporting Person retains an indirect pecuniary interest in the shares. [F2] Held by the Trust of which the Reporting Person is a trustee. --- Footnotes (Complete Index) --- F1: Represents shares transferred by the Reporting Person, without consideration, to the Reporting Person's revocable living trust, of which the Reporting Person is a trustee and the Reporting Person and her immediate family are beneficiaries, for estate planning purposes. The Reporting Person retains an indirect pecuniary interest in the shares. F2: Held by the Trust of which the Reporting Person is a trustee. --- Signature --- /s/ By: /s/ Arjun Kampani, as Attorney-in-Fact For: Merline Saintil (2026-09-02)