Frank Klein - 27 Aug 2026 Form 4 Insider Report for Rocket Lab Corp (RKLB)

Reporting relationship: Chief Operations Officer
Issuer ticker: RKLB
Reported as of: 27 Aug 2026
Net transaction value: -$2,368,354
SEC form: 4
Accepted by SEC: 28 Aug 2026, 18:06:53 UTC
Prior SEC filing: 26 Aug 2026
Source filing: View source filing
Reporting owner signature: By: /s/Arjun Kampani, as Attorney-in-Fact For: Frank Klein

Key filing fact

Frank Klein filed Form 4 for Rocket Lab Corp (RKLB) on 28 Aug 2026.

Key facts

This page summarizes Frank Klein's Form 4 filing for Rocket Lab Corp (RKLB).
3 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 28 Aug 2026, 18:06.

Change

Previous filing in this sequence was filed on 26 Aug 2026.
Current net transaction value: -$2,368,354.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002037530 Primary reporting owner

Klein Frank

Relationship: Chief Operations Officer
Address: 3881 MCGOWEN STREET, LONG BEACH
Signature: By: /s/Arjun Kampani, as Attorney-in-Fact For: Frank Klein
Signature date: 28 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

RKLB transaction

Common Stock

Sale

Transaction value: $1,013,640
Shares: -15,300
Change %: -1.6%
Price: $66.25
Shares after: 945,995
Date: 27 Aug 2026
Ownership: Direct
Footnotes: F1, F2

RKLB transaction

Common Stock

Sale

Transaction value: $1,323,780
Shares: -19,800
Change %: -2.1%
Price: $66.86
Shares after: 926,195
Date: 27 Aug 2026
Ownership: Direct
Footnotes: F1, F3

RKLB transaction

Common Stock

Sale

Transaction value: $30,933
Shares: -458
Change %: -0.05%
Price: $67.54
Shares after: 925,737
Date: 27 Aug 2026
Ownership: Direct
Footnotes: F1, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 4 footnotes

Footnote F1

Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 19, 2025.

Footnote F2

The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $65.5300 to $66.5200. 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.

Footnote F3

The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $66.5300 to $67.5200. 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.

Footnote F4

The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $67.5300 to $67.5400. 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.