Rocket Lab director granted 2,482 RSUs

Saintil Merline reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Saintil Merline reported acquisition or exercise transactions in this Form 4 filing.

Rocket Lab Corp director Merline Saintil received a grant of 2,482 shares of Common Stock in the form of restricted stock units (RSUs). The RSUs were granted at no cash cost and increase her direct holdings to 264,385 shares. 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, as long as she continues serving on the Board.

Insider Trade Summary

Grant/Award: 2,482 shares

Grant/Award 1 txn

Insider Saintil Merline

Role Director

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

Holdings After Transaction: Common Stock — 264,385 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: $0.00 per share Total shares after grant: 264,385 shares

3 metrics

RSUs granted 2,482 shares Restricted stock units awarded to Merline Saintil

Grant price per share $0.00 per share Reported transaction price for RSU grant

Total shares after grant 264,385 shares Merline Saintil’s direct Rocket Lab holdings post-transaction

Key Terms

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

3 terms

restricted stock units ("RSUs") financial

"Represents restricted stock units ("RSUs") granted to the Reporting Person"

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.

Non-Employee Director Compensation Policy financial

"under the Rocket Lab Corporation Amended and Restated Non-Employee Director Compensation Policy"

2021 Stock Option and Incentive Plan financial

"and the Rocket Lab Corporation 2021 Stock Option and Incentive Plan"

FAQ

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

What did Rocket Lab Corp (RKLB) director Merline Saintil report on this Form 4?

Merline Saintil reported receiving 2,482 Rocket Lab Corp restricted stock units as a grant. These equity awards increase her direct holdings to 264,385 common shares and were issued under the company’s non-employee director compensation policy and 2021 stock plan.

How many Rocket Lab Corp (RKLB) shares were granted to Merline Saintil?

The filing shows a grant of 2,482 Rocket Lab Corp restricted stock units. Each RSU represents one share of common stock, awarded at no cash cost as part of her director compensation package under the company’s equity incentive arrangements.

What is Merline Saintil’s Rocket Lab Corp (RKLB) ownership after this transaction?

After the RSU grant, Merline Saintil directly holds 264,385 Rocket Lab Corp common shares. This total includes the 2,482 restricted stock units granted in the reported transaction, reflecting her updated equity position as a non-employee director.

When do Merline Saintil’s new Rocket Lab Corp (RKLB) RSUs vest?

The RSUs vest in full on the earlier of Rocket Lab Corp’s next annual stockholder meeting or one year from the grant date. Vesting is conditioned on her continued service on the Board of Directors through the applicable vesting date.

Under which plans were the Rocket Lab Corp (RKLB) RSUs granted to Merline Saintil?

The RSUs were granted under Rocket Lab Corp’s Amended and Restated Non-Employee Director Compensation Policy and its 2021 Stock Option and Incentive Plan. These frameworks govern equity compensation awards for outside directors of the company.

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

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Accepted by SEC EDGAR 05/22/2026 - 05:38 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^*

Saintil Merline

(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	264,385	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: Merline Saintil	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)