[Form 4] Rocket Lab Corporation Insider Trading Activity

Rhea-AI Filing Summary

Kenneth R. Possenriede, a director of Rocket Lab Corporation (RKLB), was granted 3,960 restricted stock units (RSUs) on 08/27/2025 under the company's non-employee director compensation policy and 2021 equity plan. 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 through that date. After the award, the Reporting Person beneficially owns 94,178 shares of Rocket Lab common stock. The Form 4 was submitted by an attorney-in-fact on behalf of the reporting person.

Positive

• 3,960 RSUs granted to a director under the company's established non-employee director compensation policy, indicating standard governance-aligned equity compensation
• Post-grant beneficial ownership disclosed: Reporting person beneficially owns 94,178 shares, improving transparency about insider holdings

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: Director grant aligns compensation with shareholder interests through time-based equity vesting.

The 3,960 RSU award to a non-employee director is a routine governance practice to align board members with long-term shareholder value. Vesting tied to either the next annual meeting or one year provides a short-term retention incentive while preserving alignment because vesting is contingent on continued board service. The filing discloses the post-grant beneficial ownership of 94,178 shares, which helps assess board ownership levels. No departures, controversies, or derivative transactions are reported here.

Securities Analyst

TL;DR: This Form 4 reports a standard director equity grant and updated beneficial ownership; no direct liquidity or derivative activity.

The transaction code indicates a grant (A) of non-derivative RSUs totaling 3,960 units priced at $0.0 for reporting purposes, consistent with compensation awards rather than market purchases. The update to beneficial ownership (94,178 shares) provides a snapshot of insider holdings but does not by itself signal material change to capitalization or control. There are no exercised options, sales, or derivative positions disclosed in this filing.

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
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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^*

Possenriede Kenneth 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	94,178	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 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.

	By: /s/ Arjun Kampani, as Attorney-in-Fact For: Kenneth R. Possenriede	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 transaction did RKLB director Kenneth R. Possenriede report on Form 4?

The Form 4 reports a grant of 3,960 restricted stock units (RSUs) on 08/27/2025.

When do the RSUs granted to the RKLB director vest?

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

How many Rocket Lab shares does the reporting person beneficially own after the grant?

Following the reported transaction, the reporting person beneficially owns 94,178 shares of common stock.

Was the transaction a purchase, sale, or grant according to the Form 4?

The transaction is coded as A, indicating an acquisition/grant of securities (RSUs), not a market purchase or sale.

Does the Form 4 disclose any derivative transactions or option exercises for this director?

No. Table II for derivative securities shows no derivative transactions or exercises reported in this filing.