[Form 4] Rocket Lab Corp Insider Trading Activity

Rhea-AI Filing Summary

Peter Beck, Kerryn Beck, Warren Butler, Equatorial Trust and Peek Street Equatorial Trustee Limited reported a series of sales of Rocket Lab Corp (RKLB) common stock on September 15 and 16, 2025. The filings show multiple disposals executed under a Rule 10b5-1 trading plan adopted by the Equatorial Trust on June 13, 2025, with weighted average prices disclosed for groups of sales ranging from about $47.41 to $55.16 per share.

The Form 4s disclose that the shares are held directly by the Trust and that Peek Street Equatorial Trustee Limited is the trustee, with Peter Beck, Kerryn Beck and Warren Butler serving as directors of the Trustee and sharing voting and investment control; each is therefore deemed an indirect beneficial owner. Following the reported transactions, the Trust’s reported indirect beneficial ownership is shown as 2,500,000 shares in the most recent line item.

Positive

• Sales executed under a Rule 10b5-1 trading plan, providing that the transactions were pre-arranged and not necessarily discretionary.
• Weighted-average prices and price ranges for each tranche are disclosed, and the reporting persons commit to provide transaction-level details on request.

Negative

• Material reduction in reported indirect beneficial ownership reflected by the most recent line showing 2,500,000 shares beneficially owned following the reported transactions.

Insights

Securities Analyst

TL;DR Multiple automatic sales under a June 13, 2025 Rule 10b5-1 plan reduced the Trust’s reported indirect stake to 2,500,000 shares.

The Form 4 filings document systematic disposals by the Equatorial Trust on September 15-16, 2025, executed pursuant to a pre-existing Rule 10b5-1 plan. Weighted-average prices are provided for tranches of sales with reported price ranges between $47.41 and $55.16 per share. The disclosures show shared voting and investment control by the Trustee directors and state that the Trustee holds the shares directly while the individuals are deemed indirect beneficial owners. The filings are routine compliance disclosures rather than statements about company operations or performance.

Corporate Governance Expert

TL;DR Reported sales were implemented via a trustee under a documented 10b5-1 plan; filing clarifies indirect ownership and disclaimer of direct beneficial ownership.

The explanatory notes specify that Peek Street Equatorial Trustee Limited is the trustee of the Equatorial Trust and that Peter Beck, Kerryn Beck and Warren Butler serve as directors of the Trustee with shared control, resulting in deemed indirect beneficial ownership. The reporting persons expressly disclaim beneficial ownership except to the extent of any pecuniary interest. The filing includes attorney-in-fact signatures and undertakings to provide transaction-level price details on request, consistent with transparent Section 16 reporting practices.

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).

1. Name and Address of Reporting Person^*

Beck Peter

(Last) (First) (Middle)

C/O ROCKET LAB USA, INC.

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)
	President, CEO and Chairman

3. Date of Earliest Transaction (Month/Day/Year)
09/15/2025

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

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

	Form filed by One Reporting Person
X	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	09/15/2025		S		329,621(1)	D	$53.5413(2)	4,670,379	I	By Trust(3)
Common Stock	09/15/2025		S		699,956(1)	D	$54.1653(4)	3,970,423	I	By Trust(3)
Common Stock	09/15/2025		S		33,981(1)	D	$54.9573(5)	3,936,442	I	By Trust(3)
Common Stock	09/16/2025		S		541,708(1)	D	$48.0403(6)	3,394,734	I	By Trust(3)
Common Stock	09/16/2025		S		724,204(1)	D	$48.8984(7)	2,670,530	I	By Trust(3)
Common Stock	09/16/2025		S		111,298(1)	D	$49.9823(8)	2,559,232	I	By Trust(3)
Common Stock	09/16/2025		S		47,055(1)	D	$50.8814(9)	2,512,177	I	By Trust(3)
Common Stock	09/16/2025		S		12,177(1)	D	$51.8102(10)	2,500,000	I	By Trust(3)
Common Stock								789,373	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

1. Name and Address of Reporting Person^*

Beck Peter

(Last) (First) (Middle)

C/O ROCKET LAB USA, INC.

3881 MCGOWEN STREET

(Street)

LONG BEACH CA 90808

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President, CEO and Chairman

1. Name and Address of Reporting Person^*

Beck Kerryn

(Last) (First) (Middle)

C/O ROCKET LAB USA, INC.

3881 MCGOWEN STREET

(Street)

LONG BEACH CA 90808

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Voluntary Filer

1. Name and Address of Reporting Person^*

Butler Warren

(Last) (First) (Middle)

C/O ROCKET LAB USA, INC.

3881 MCGOWEN STREET

(Street)

LONG BEACH CA 90808

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Voluntary Filer

1. Name and Address of Reporting Person^*

Equatorial Trust

(Last) (First) (Middle)

C/O ROCKET LAB CORPORATION

3881 MCGOWEN STREET

(Street)

LONG BEACH CA 90808

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Voluntary Filer

1. Name and Address of Reporting Person^*

Peek Street Equatorial Trustee Ltd

(Last) (First) (Middle)

C/O ROCKET LAB CORPORATION

3881 MCGOWEN STREET

(Street)

LONG BEACH CA 90808

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Voluntary Filer

Explanation of Responses:

1. Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Equatorial Trust (the "Trust") on June 13, 2025.

2. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $52.7900 to $53.7875, inclusive. The reporting persons undertake to provide to the Issuer, any security holder of the Issuer, 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. These shares are held directly by the Trust. Peek Street Equatorial Trustee Limited (the "Trustee") is the trustee of the Trust and each of Peter Beck, Kerryn Beck and Warren Butler serve as a director of the Trustee with shared voting and investment control of the shares and, as a result, the Trustee and each such individual is deemed to be an indirect beneficial owner of these securities. Each reporting person disclaims beneficial ownership of these securities, except to the extent, if any, of his, her or its pecuniary interest therein, and the filing of this Form 4 is not an admission that any reporting person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

4. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $53.7900 to $54.7800, inclusive. The reporting persons undertake to provide to the Issuer, any security holder of the Issuer, 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 $54.7900 to $55.1600, inclusive. The reporting persons undertake to provide to the Issuer, any security holder of the Issuer, 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 $47.4100 to $48.4050, inclusive. The reporting persons undertake to provide to the Issuer, any security holder of the Issuer, 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.

7. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.4100 to $49.4050, inclusive. The reporting persons undertake to provide to the Issuer, any security holder of the Issuer, 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.

8. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.4100 to $50.4050, inclusive. The reporting persons undertake to provide to the Issuer, any security holder of the Issuer, 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.

9. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.4100 to $51.4000, inclusive. The reporting persons undertake to provide to the Issuer, any security holder of the Issuer, 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.

10. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.4100 to $52.0500, inclusive. The reporting persons undertake to provide to the Issuer, any security holder of the Issuer, 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.

	/s/ Adam Spice, as Attorney-in-Fact for Peter Beck	09/17/2025
	/s/ Adam Spice, as Attorney-in-Fact for Kerryn Beck	09/17/2025
	/s/ Adam Spice, as Attorney-in-Fact for Warren Butler	09/17/2025
	/s/ Adam Spice, as Attorney-in-Fact for Equatorial Trust	09/17/2025
	/s/ Adam Spice, as Attorney-in-Fact for Peek Street Equatorial Trustee Limited	09/17/2025
	** 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 insider transactions did Rocket Lab (RKLB) report on Form 4?

The filings report multiple sales of common stock by the Equatorial Trust and related reporting persons on September 15 and 16, 2025, executed under a Rule 10b5-1 plan.

Were the sales part of a Rule 10b5-1 trading plan for RKLB insiders?

Yes. The Explanation states the sales occurred automatically pursuant to a Rule 10b5-1 trading plan adopted on June 13, 2025 by the Equatorial Trust.

What price ranges were reported for the RKLB share sales?

The footnotes disclose weighted-average price ranges for tranches of sales, with prices reported in ranges from about $47.41 to $55.16 per share across different transactions.

Who is deemed to have beneficial ownership of the shares?

The shares are held directly by the Equatorial Trust; Peek Street Equatorial Trustee Limited is the trustee and Peter Beck, Kerryn Beck and Warren Butler serve as directors of the Trustee and are deemed indirect beneficial owners.

What was the Trust’s reported beneficial ownership after the transactions?

The most recent reported line in the filing shows the Trust’s indirect beneficial ownership as 2,500,000 shares following the reported transactions.