SEC Form 4 · accession 0002001011-26-000136

Rocket Lab Corp · RKLB

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Officer — Chief Financial Officer

Period of report

Sep 2, 2026

Accepted (ET)

Sep 4, 2026 · 6:12 pm EDT

Rule 10b5-1 plan

yes — trade under a plan

Issuer CIK

0001819994

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock	Sep 2, 2026	M	140,157	$1.09	A	1,296,124	D
Common Stock^F1,F2	Sep 2, 2026	S	67,257	$62.2564	D	1,228,867	D
Common Stock^F1,F3	Sep 2, 2026	S	72,900	$62.9704	D	1,155,967	D
Common Stock	holding	—	—		—	250,000	I	by Trust

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Employee Stock Option (right to buy)^F4	$1.09	Sep 2, 2026	M	140,157	D	—	Aug 3, 2028	Common Stock	140,157	2,382,668	D

F1Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 03, 2026.
F2The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $61.5900 to $62.5800. 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.
F3The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $62.5900 to $63.4700. 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.
F4The stock option was granted on August 3, 2018, and had a vesting commencement date of May 25, 2018. 1/4 of the shares subject to the stock option vest on the one year anniversary of the vesting commencement date, and 1/48 of the shares subject to the stock option vest on a monthly basis each month thereafter, subject, in each case, to the reporting person's continued service relationship through each applicable vesting date.