[Form 4] Rocket Lab Corporation Insider Trading Activity

Rhea-AI Filing Summary

Alexander R. Slusky, a Rocket Lab Corp (RKLB) director, acquired 3,960 restricted stock units (RSUs) on 08/27/2025 under the company's non-employee director compensation and incentive plans. The RSUs vest in full on the earlier of the issuer's next annual meeting or one year from grant, subject to continuous board service. After the grant, the filing reports 123,849 shares held directly by Slusky and 534,675 shares held indirectly through Abalone Cove LLLP, of which he is the sole general partner and, with his spouse, a limited partner. The Form 4 was signed by an attorney-in-fact on Slusky's behalf.

Positive

• Director alignment: Grant of 3,960 RSUs links the director's compensation to shareholder value through equity-based awards.
• Clear disclosure: Filing reports both direct (123,849) and indirect (534,675) holdings, clarifying beneficial ownership structure.

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: Director received standard RSU award that vests within a year, aligning his interests with shareholders.

The reported grant of 3,960 RSUs to a non-employee director under the company's compensation policy appears routine for board compensation. The one-year/next-meeting vesting condition is common for retention and alignment. Disclosure of both direct and indirect holdings clarifies beneficial ownership structure: 123,849 direct and 534,675 indirect shares via a family partnership. No departures, dilutive instruments, or exception language are disclosed in this Form 4.

Securities Analyst

TL;DR: Transaction is an administrative equity grant; ownership levels are material to transparency but not an operational event.

The acquisition is classified as an award (code A) with $0 purchase price, indicating RSUs rather than a market purchase. The filing provides clear post-transaction ownership counts that investors use to track insider alignment and potential voting influence. The indirect holding via Abalone Cove LLLP is explicitly described, improving disclosure quality. There are no derivative transactions reported.

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^*

Slusky Alexander R

(Last) (First) (Middle)

3881 MCGOWEN STREET

(Street)

LONG BEACH CA 90808

(City) (State) (Zip)

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)

3. Date of Earliest Transaction (Month/Day/Year)
08/27/2025

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

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

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

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	08/27/2025		A		3,960(1)	A	$0.0	123,849	D
Common Stock								534,675	I	By Abalone Cove LLLP(2)

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 Issuer'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.

2. These shares are held by Abalone Cove LLLP, a limited liability limited partnership, of which the Reporting Person is the sole general partner and of which the Reporting Person and his spouse are the sole limited partners.

	By: /s/ Arjun Kampani as Attorney-in-Fact For: Alexander R. Slusky	08/29/2025
	** 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.

FAQ

What did RKLB director Alexander Slusky acquire on 08/27/2025?

He was granted 3,960 restricted stock units (RSUs) under the company's non-employee director compensation policy and 2021 incentive plan.

When do the RSUs granted to Alexander Slusky vest?

The RSUs vest in full on the earlier of the issuer's next Annual Meeting of Stockholders or the one-year anniversary of the grant, subject to continuous board service.

How many Rocket Lab (RKLB) shares does Alexander Slusky beneficially own after the transaction?

The Form 4 reports 123,849 shares directly and 534,675 shares indirectly through Abalone Cove LLLP.

What is Abalone Cove LLLP in relation to Alexander Slusky?

Abalone Cove LLLP is a limited liability limited partnership where Slusky is the sole general partner and he and his spouse are the sole limited partners; it holds 534,675 RKLB shares indirectly.

Was any cash paid for the RSU grant reported on this Form 4?

No cash was paid; the transaction is reported with a $0.0 price, consistent with RSU awards.