Tax-related stock sale by Rocket Lab (RKLB) CEO Peter Beck

Rhea-AI Filing Summary

Rocket Lab Corp CEO Peter Beck reported multiple stock sales linked to tax withholding. On March 2, 2026, he sold a total of 18,857 shares of common stock in open-market transactions under a pre-arranged Rule 10b5-1 plan.

According to the disclosure, these were “sell-to-cover” trades to satisfy applicable tax withholding obligations from vesting and settlement of previously granted restricted stock units. The sales were executed at weighted-average prices, with underlying trade prices ranging from $66.47 to $70.945 per share. After these sales, Beck directly owned 884,085 Rocket Lab shares.

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

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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).

X

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^*

Beck Peter

(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
X	Officer (give title below)		Other (specify below)
	CEO

3. Date of Earliest Transaction (Month/Day/Year)
03/02/2026

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	03/02/2026		S		1,349(1)	D	$66.8288(2)	901,593	D
Common Stock	03/02/2026		S		951(1)	D	$67.9207(3)	900,642	D
Common Stock	03/02/2026		S		3,465(1)	D	$69.1034(4)	897,177	D
Common Stock	03/02/2026		S		11,010(1)	D	$70.0313(5)	886,167	D
Common Stock	03/02/2026		S		2,082(1)	D	$70.617(6)	884,085	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 the sale of shares pursuant to a "sell-to-cover" transaction pursuant to a Rule 10b5-1 election adopted by the Reporting Person in order to satisfy applicable tax withholding obligations in connection with the vesting and settlement of restricted stock units previously granted to the Reporting Person.

2. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $66.4700 to $67.4500. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

3. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $67.5000 to $68.4500. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

4. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $68.4800 to $69.4600. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

5. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $69.4700 to $70.4600. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

6. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $70.4700 to $70.9450. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

	By: /s/Arjun Kampani, as Attorney-in-Fact For: Peter Beck	03/04/2026
	** 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).
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FAQ

What insider transaction did Rocket Lab (RKLB) disclose for Peter Beck?

Rocket Lab disclosed that CEO Peter Beck sold 18,857 shares of common stock on March 2, 2026. The filing describes these as open-market sales executed under a Rule 10b5-1 plan, connected to tax withholding for vested restricted stock units.

How many Rocket Lab (RKLB) shares did Peter Beck sell and at what prices?

Peter Beck sold 18,857 Rocket Lab common shares across several transactions. The sales used weighted-average prices, with underlying trade prices ranging from about $66.47 to $70.945 per share, as detailed in the pricing footnotes to the insider report.

Why did Rocket Lab CEO Peter Beck sell RKLB shares in this Form 4?

The filing states the sales were a “sell-to-cover” transaction under a Rule 10b5-1 election. They were made to satisfy applicable tax withholding obligations arising from the vesting and settlement of restricted stock units previously granted to Peter Beck.

Does Peter Beck still hold Rocket Lab (RKLB) shares after these sales?

Yes. After completing the reported transactions, Peter Beck directly owned 884,085 shares of Rocket Lab common stock. The Form 4’s final line for these trades lists this post-transaction share balance as his remaining direct ownership position.

Were Peter Beck’s Rocket Lab share sales pre-planned under Rule 10b5-1?

Yes. The footnotes explain the sales occurred under a Rule 10b5-1 election adopted by Peter Beck. This pre-arranged trading plan governed the sell-to-cover transactions tied to tax withholding from the vesting and settlement of his restricted stock units.

What type of Rocket Lab security did Peter Beck sell in this Form 4?

All reported transactions involve Rocket Lab common stock. The Form 4 lists each trade under the non-derivative security title “Common Stock,” confirming they were sales of ordinary shares rather than options, warrants, or other derivative securities.