[Form 4] Rocket Lab Corporation Insider Trading Activity

Rhea-AI Filing Summary

Rocket Lab director Edward H. Frank was granted 3,960 restricted stock units (RSUs) on 08/27/2025 under the company's non-employee director compensation policy and 2021 incentive plan. The RSUs carry a $0.0 purchase price and will vest in full on the earlier of the issuer's next annual meeting or the one-year anniversary of grant, provided Mr. Frank continues board service through that date. Following the grant, the filing shows Mr. Frank beneficially owns 150,004 shares. The Form 4 was signed by an attorney-in-fact on behalf of the reporting person.

Positive

• RSU grant aligns director pay with shareholder interests through equity-based compensation
• Clear vesting schedule (earlier of next annual meeting or one-year anniversary) conditioned on continued board service

Negative

• None.

Insights

Financial Analyst

TL;DR: A routine director equity grant of 3,960 RSUs increases reported beneficial ownership to 150,004 shares; appears compensatory, not a market trade.

The grant is reported as an acquisition (code A) of RSUs with no cash price, consistent with standard non-employee director compensation. Vesting is time-based and conditioned on continued service, with full vesting at either the next annual meeting or one year from grant. This does not reflect a purchase or sale in the market and is unlikely to materially affect near-term free float given the modest share count relative to typical public company float sizes.

Corporate Governance Expert

TL;DR: Typical board compensation disclosed; vesting tied to service and standard governance practices.

The disclosure aligns with Rocket Lab's stated non-employee director compensation framework and the 2021 incentive plan. Time-based RSUs that vest on the next annual meeting or one year from grant are common mechanisms to align director incentives with shareholder interests while conditioning award delivery on continued service. The filing was executed by an attorney-in-fact, which is a routine administrative practice.

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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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^*

Frank Edward H.

(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	150,004	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: Edward H. Frank	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 Rocket Lab (RKLB) report on Form 4 for Edward H. Frank?

The Form 4 reports an acquisition of 3,960 RSUs by director Edward H. Frank on 08/27/2025 under the company's non-employee director compensation policy and 2021 incentive plan.

When do the 3,960 RSUs granted to Edward H. Frank vest?

The RSUs vest in full on the earlier of the issuer's next annual meeting of stockholders and the one-year anniversary of the grant, subject to continuous board service through that date.

How many Rocket Lab shares does Edward H. Frank beneficially own after the reported transaction?

Following the reported transaction, Edward H. Frank beneficially owns 150,004 shares according to the Form 4.

Was cash paid for the RSUs reported in the Form 4?

No cash price is reported; the transaction shows a $0.0 price for the RSU acquisition on the Form 4.

Who signed the Form 4 filing for Edward H. Frank?

The Form 4 was signed by Arjun Kampani as Attorney-in-Fact for Edward H. Frank on 08/29/2025.