Rocket Lab director Nina Armagno sells 10,926 shares

The four weighted-average sale prices ranged from $51.3092 to $54.3361 per share; a separate 100-share transaction was reported at $55.0100 per share.

Available on EDGAR 11/03/2026 - 08:23 PM EST Accepted by SEC EDGAR 11/03/2026 - 08:22 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Rocket Lab Corp (RKLB) director Nina Armagno sold 10,926 shares of common stock on November 2, 2026, across five reported transactions. The sales occurred automatically under a Rule 10b5-1 trading plan adopted September 19, 2025. Four transactions report weighted-average per-share prices; the fifth reports a per-share price for a separate 100-share sale.

Insider Trade Summary 10b5-1

Net Seller: 10,926 shares

Net Sell 5 txns

Insider Armagno Nina

Role Director

Sold 10,926 shs ($577K)

Share of Position Sold 9.8%

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	4,026	$51.3092	$207K
Sale	Common Stock F1, F3	1,500	$52.6306	$79K
Sale	Common Stock F1, F4	3,000	$53.552	$161K
Sale	Common Stock F1, F5	2,300	$54.3361	$125K
Sale	Common Stock F1	100	$55.01	$6K

Holdings After Transaction: Common Stock — 100,496 shares (Direct)

Holdings Before and After: Common Stock, 111,422 to 100,496 shares (Direct)

Other Insiders: 1 other insider reported open-market sales of this stock in the 30 days up to this filing.

Footnotes (5)

1. F1. Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 19, 2025.
2. F2. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $50.7900 to $51.7800. 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. F3. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $51.8900 to $52.8800. 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. F4. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $52.9700 to $53.8800. 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. F5. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $54.0100 to $54.7700. 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.

Key Figures

Shares sold: 10,926 shares Shares sold and weighted-average price: 4,026 shares at $51.3092 per share Shares sold and weighted-average price: 1,500 shares at $52.6306 per share +3 more

6 metrics

Shares sold 10,926 shares November 2, 2026

Shares sold and weighted-average price 4,026 shares at $51.3092 per share November 2, 2026

Shares sold and weighted-average price 1,500 shares at $52.6306 per share November 2, 2026

Shares sold and weighted-average price 3,000 shares at $53.5520 per share November 2, 2026

Shares sold and weighted-average price 2,300 shares at $54.3361 per share November 2, 2026

Shares sold and reported price 100 shares at $55.0100 per share November 2, 2026

Key Terms

Rule 10b5-1 trading plan, weighted-average price

2 terms

Rule 10b5-1 trading plan regulatory

"automatically pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted-average price financial

"The price reported in Column 4 is a weighted-average price."

Weighted-average price is the average of multiple prices where each price is counted according to its size or importance—larger trades carry more weight than smaller ones, like averaging course grades by credit hours. It matters to investors because it gives a more realistic picture of the true price paid or received, helping assess trade execution, compare performance, calculate cost basis, and value positions more accurately than a simple average.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What prices were reported for Nina Armagno's RKLB stock sales?

On November 2, 2026, the reported amounts and prices were 4,026 shares at $51.3092, 1,500 at $52.6306, 3,000 at $53.5520, 2,300 at $54.3361, and 100 at $55.0100 per share. The first four prices were weighted averages.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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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).

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^*

Armagno Nina

(Last) (First) (Middle)

3881 MCGOWEN STREET

(Street)

LONG BEACH CALIFORNIA 90808

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
11/02/2026

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

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

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

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	11/02/2026		S		4,026(1)	D	$51.3092(2)	107,396	D
Common Stock	11/02/2026		S		1,500(1)	D	$52.6306(3)	105,896	D
Common Stock	11/02/2026		S		3,000(1)	D	$53.552(4)	102,896	D
Common Stock	11/02/2026		S		2,300(1)	D	$54.3361(5)	100,596	D
Common Stock	11/02/2026		S		100(1)	D	$55.01	100,496	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 which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 19, 2025.

2. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $50.7900 to $51.7800. 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 $51.8900 to $52.8800. 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 $52.9700 to $53.8800. 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 $54.0100 to $54.7700. 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: Nina Armagno	11/03/2026
	** 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).
** 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.
* Form 4: SEC 1474 (03-26)