Rocket Lab officer sells 669 shares in tax trade

Rocket Lab Corp (RKLB) disclosed that officer Agostino Ricupati, VP Corp Controller & CAO, reported three open‑market sales of common stock on 2026-08-24 totaling 669 shares.

Rhea-AI Filing Summary

Rocket Lab Corp (RKLB) disclosed that officer Agostino Ricupati, VP Corp Controller & CAO, reported three open‑market sales of common stock on 2026-08-24 totaling 669 shares. All transactions were designated as a sell-to-cover to satisfy tax withholding obligations from vesting restricted stock units previously granted to him.

The sales covered 619 shares at a weighted-average price of $69.5345, 20 shares at $70.2023, and 30 shares at $71.1700. Two of the trades were executed across multiple prices within disclosed ranges, and the filing does not state Ricupati’s share balance after these transactions.

Insider Trade Summary

Net Seller: 669 shares

Net Sell 3 txns

Insider Ricupati Agostino

Role VP Corp Controller & CAO

Sold 669 shs ($47K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	619	$69.5345	$43K
Sale	Common Stock F1, F3	20	$70.2023	$1K
Sale	Common Stock F1	30	$71.17	$2K

Holdings After Transaction: Common Stock — 26,863 shares (Direct)

Footnotes (3)

1. F1. Represents the sale of shares pursuant to a "sell-to-cover" transaction 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. F2. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $69.0000 to $69.9900. 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 $70.0000 to $70.6400. 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 (first transaction): 619 shares of Common Stock Price per share (first transaction): $69.5345 per share Shares sold (second transaction): 20 shares of Common Stock +5 more

8 metrics

Shares sold (first transaction) 619 shares of Common Stock Sale on 2026-08-24 at a weighted-average price of $69.5345

Price per share (first transaction) $69.5345 per share 619-share sale of Rocket Lab common stock on 2026-08-24

Shares sold (second transaction) 20 shares of Common Stock Sale on 2026-08-24 at a weighted-average price of $70.2023

Price per share (second transaction) $70.2023 per share 20-share sale of Rocket Lab common stock on 2026-08-24

Shares sold (third transaction) 30 shares of Common Stock Sale on 2026-08-24 at $71.1700 per share

Total shares sold 669 shares of Common Stock Aggregate of three sales by Agostino Ricupati on 2026-08-24

Price range (first weighted-average sale) $69.0000–$69.9900 Range for trades included in the $69.5345 weighted-average price

Price range (second weighted-average sale) $70.0000–$70.6400 Range for trades included in the $70.2023 weighted-average price

Key Terms

sell-to-cover, restricted stock units, weighted-average price, tax withholding obligations

4 terms

sell-to-cover financial

"Represents the sale of shares pursuant to a "sell-to-cover" transaction"

Sell-to-cover is when part of newly issued or exercised company stock is immediately sold to pay required taxes and fees, so the recipient keeps the remaining shares. For investors this matters because it reduces the number of shares insiders or employees actually hold after a grant, can create small, routine share sales that aren’t signal of cashing out, and slightly increases share supply on the market—like selling a portion of a paycheck to cover the tax bill.

restricted stock units financial

"in connection with the vesting and settlement of restricted stock units previously"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

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.

tax withholding obligations financial

"in order to satisfy applicable tax withholding obligations in connection with"

FAQ

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

Who from RKLB reported transactions in this Form 4 filing?

The filing reports transactions by Agostino Ricupati, an officer of Rocket Lab Corp serving as VP Corp Controller & CAO. He is not listed as a director or ten percent owner in this report.

How many Rocket Lab (RKLB) shares did Agostino Ricupati sell?

Agostino Ricupati reported selling a total of 669 shares of Rocket Lab common stock on 2026-08-24, across three separate non-derivative transactions, all coded as sales in the open market or private transactions.

What was the purpose of the RKLB share sales reported by Ricupati?

The filing states the sales represent a sell-to-cover transaction to satisfy tax withholding obligations arising from the vesting and settlement of restricted stock units previously granted to Agostino Ricupati.

At what prices were the 669 Rocket Lab (RKLB) shares sold?

Ricupati sold 619 shares at $69.5345, 20 shares at $70.2023, and 30 shares at $71.1700. Two trades used weighted-average prices, with actual execution ranges of $69.0000–$69.9900 and $70.0000–$70.6400, respectively.

Were Ricupati’s RKLB sales under a Rule 10b5-1 trading plan?

The filing’s Rule 10b5‑1 checkbox is marked false, and the footnotes do not describe a 10b5‑1 plan. The sales are described instead as sell-to-cover transactions for tax withholding on vested restricted stock units.

Does the Form 4 state Ricupati’s RKLB holdings after these sales?

For each of the three reported sales, the field for total shares following transaction is null in the data provided, so this Form 4 does not state Ricupati’s resulting share balance.

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

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Available on EDGAR 08/26/2026 - 07:03 PM EDT Accepted by SEC EDGAR 08/26/2026 - 07:02 PM EDT Learn about SEC filing dates

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).

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^*

Ricupati Agostino

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP Corp Controller & CAO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/24/2026

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	08/24/2026		S		619(1)	D	$69.5345(2)	26,913	D
Common Stock	08/24/2026		S		20(1)	D	$70.2023(3)	26,893	D
Common Stock	08/24/2026		S		30(1)	D	$71.17	26,863	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 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 $69.0000 to $69.9900. 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 $70.0000 to $70.6400. 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: Agostino Ricupati	08/26/2026
	** 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)