Rocket Lab director granted 2,482 RSUs

Armagno Nina reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Armagno Nina reported acquisition or exercise transactions in this Form 4 filing.

Rocket Lab Corp director Nina Armagno received an equity grant as part of her board compensation. She was awarded 2,482 shares of Common Stock in the form of restricted stock units at a stated price of $0.0000 per share. Following this grant, she holds 111,422 shares directly. The RSUs will vest in full on the earlier of the company’s next Annual Meeting of Stockholders or the one-year anniversary of the grant date, subject to her continuous service on the Board.

Insider Trade Summary

Grant/Award: 2,482 shares

Grant/Award 1 txn

Insider Armagno Nina

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	2,482	$0.00	$0.00

Holdings After Transaction: Common Stock — 111,422 shares (Direct)

Footnotes (1)

1. F1. Represents restricted stock units ("RSUs") granted to the Reporting Person under the Rocket Lab Corporation Amended and Restated Non-Employee Director Compensation Policy, and the Rocket Lab Corporation 2021 Stock Option and Incentive Plan. Such RSUs will vest in full on the earlier of (i) the date of the Registrant's next Annual Meeting of Stockholders and (ii) the one-year anniversary of the date of grant, subject to the Reporting Person's continuous service as a member of the Board of Directors through such date.

Key Figures

RSUs granted: 2,482 shares Grant price per share: $0.0000 per share Shares after transaction: 111,422 shares

3 metrics

RSUs granted 2,482 shares Restricted stock units granted on 2026-05-20

Grant price per share $0.0000 per share Stated transaction price for RSU award

Shares after transaction 111,422 shares Total Rocket Lab common shares held directly after grant

Key Terms

restricted stock units ("RSUs"), 2021 Stock Option and Incentive Plan, Amended and Restated Non-Employee Director Compensation Policy

3 terms

restricted stock units ("RSUs") financial

"Represents restricted stock units ("RSUs") granted to the Reporting Person under the Rocket Lab Corporation Amended and Restated Non-Employee Director Compensation Policy"

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

2021 Stock Option and Incentive Plan financial

"and the Rocket Lab Corporation 2021 Stock Option and Incentive Plan. Such RSUs will vest in full"

Amended and Restated Non-Employee Director Compensation Policy financial

"granted to the Reporting Person under the Rocket Lab Corporation Amended and Restated Non-Employee Director Compensation Policy"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Rocket Lab (RKLB) director Nina Armagno report on this Form 4?

Nina Armagno reported receiving 2,482 Rocket Lab restricted stock units as a board compensation grant. The award increased her direct holdings to 111,422 common shares, reflecting a routine, non-cash equity grant rather than an open-market stock purchase or sale.

How many Rocket Lab (RKLB) shares does Nina Armagno hold after this grant?

After the reported grant, Nina Armagno holds 111,422 Rocket Lab common shares directly. This figure includes the 2,482 restricted stock units awarded under the company’s non-employee director compensation policy and 2021 Stock Option and Incentive Plan.

Is Nina Armagno’s Rocket Lab (RKLB) transaction a stock purchase or sale?

The transaction is neither an open-market purchase nor a sale. It is a grant of 2,482 restricted stock units at a stated price of $0.0000 per share, classified as a compensation-related award rather than a market trade in Rocket Lab shares.

When will Nina Armagno’s Rocket Lab (RKLB) RSUs vest?

The 2,482 restricted stock units will vest in full on the earlier of Rocket Lab’s next Annual Meeting of Stockholders or the one-year anniversary of the grant date, contingent on Nina Armagno’s continuous service on the Board of Directors through that vesting date.

Under which Rocket Lab (RKLB) plans were Nina Armagno’s RSUs granted?

The RSUs were granted under Rocket Lab’s Amended and Restated Non-Employee Director Compensation Policy and the Rocket Lab Corporation 2021 Stock Option and Incentive Plan, which govern equity-based compensation awards to non-employee members of the Board of Directors.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/22/2026 - 05:36 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Armagno Nina

(Last) (First) (Middle)

3881 MCGOWEN STREET

(Street)

LONG BEACH CALIFORNIA 90808

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Rocket Lab Corp [ RKLB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/20/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/20/2026		A		2,482(1)	A	$0.0	111,422	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents restricted stock units ("RSUs") granted to the Reporting Person under the Rocket Lab Corporation Amended and Restated Non-Employee Director Compensation Policy, and the Rocket Lab Corporation 2021 Stock Option and Incentive Plan. Such RSUs will vest in full on the earlier of (i) the date of the Registrant's next Annual Meeting of Stockholders and (ii) the one-year anniversary of the date of grant, subject to the Reporting Person's continuous service as a member of the Board of Directors through such date.

	By: /s/ Arjun Kampani, as Attorney-in-Fact For: Nina Armagno	05/22/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)