Rocket Lab (NASDAQ: RKLB) officer plans new sale after $9.5M stock trade

Rhea-AI Filing Summary

Rocket Lab Corp (RKLB) received a notice that officer Arjun Kampani intends to sell 6,034 shares of Rocket Lab common stock under Rule 144. The shares, held as restricted stock units, are to be sold through Morgan Stanley Smith Barney LLC Executive Financial Services, with an indicated aggregate market value of $399,330.12 as of the filing.

The notice also lists prior Rocket Lab share sales by Arjun Kampani during the preceding three months, including 7,754 shares for $539,896.23, 88,000 shares for $9,502,240.00, and 23,804 shares for $3,509,510.40, the last identified as 10b5-1 sales.

Key Figures

Shares to be sold under Rule 144: 6,034 shares Aggregate market value of planned sale: $399,330.12 Shares sold on 08/24/2026: 7,754 shares +5 more

8 metrics

Shares to be sold under Rule 144 6,034 shares Planned Rocket Lab common stock sale by Arjun Kampani

Aggregate market value of planned sale $399,330.12 Value associated with 6,034 shares of Rocket Lab common stock

Shares sold on 08/24/2026 7,754 shares Rocket Lab common stock sold by Arjun Kampani in past 3 months

Proceeds from 08/24/2026 sale $539,896.23 Sale of 7,754 Rocket Lab shares

Shares sold on 06/18/2026 88,000 shares Rocket Lab common stock sold by Arjun Kampani in past 3 months

Proceeds from 06/18/2026 sale $9,502,240.00 Sale of 88,000 Rocket Lab shares

Shares sold on 05/28/2026 (10b5-1) 23,804 shares Rocket Lab common stock sold as 10b5-1 sales by Arjun Kampani

Proceeds from 05/28/2026 10b5-1 sale $3,509,510.40 Sale of 23,804 Rocket Lab shares

Key Terms

Rule 144, Restricted Stock Units, 10b5-1, Executive Financial Services

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Units financial

"Common | 08/22/2026 | Restricted Stock Units | Issuer"

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.

10b5-1 regulatory

"10b5-1 Sales for ARJUN KAMPANI 3881 McGowen Street Long Beach"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza"

FAQ

What does Rocket Lab Corp (RKLB)'s latest Form 144 filing disclose?

It discloses that officer Arjun Kampani plans to sell 6,034 shares of Rocket Lab common stock under Rule 144, with an indicated aggregate market value of $399,330.12, using Morgan Stanley Smith Barney LLC Executive Financial Services as broker.

How many Rocket Lab (RKLB) shares is Arjun Kampani proposing to sell now?

Arjun Kampani is proposing to sell 6,034 shares of Rocket Lab common stock. These shares are listed as Restricted Stock Units and are to be sold under Rule 144 through Morgan Stanley Smith Barney LLC Executive Financial Services.

What Rocket Lab (RKLB) share sales has Arjun Kampani made in the past three months?

The filing lists three sales: 7,754 shares for $539,896.23 on 08/24/2026; 88,000 shares for $9,502,240.00 on 06/18/2026; and 23,804 shares for $3,509,510.40 on 05/28/2026, the last described as 10b5-1 sales.

Is the planned Rocket Lab (RKLB) sale by Arjun Kampani under a Rule 10b5-1 plan?

The filing identifies only the May 28, 2026 sale of 23,804 shares as 10b5-1 sales. The planned sale of 6,034 shares under Rule 144 is not described in the text as a 10b5-1 transaction.

Who is the broker for the planned Rocket Lab (RKLB) Rule 144 sale?

The planned sale of 6,034 Rocket Lab common shares is to be executed through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004.

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

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Available on EDGAR 08/27/2026 - 04:23 PM Accepted by SEC EDGAR 08/27/2026 - 04:19 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001671507
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Rocket Lab Corporation
SEC File Number	001-39560
Address of Issuer	3881 McGowen Street Long Beach CALIFORNIA 90808
Phone	7144655737
Name of Person for Whose Account the Securities are To Be Sold	ARJUN KAMPANI
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	6034	399330.12	598350482	08/27/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	08/22/2026	Restricted Stock Units	Issuer			6034	08/22/2026	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
ARJUN KAMPANI 3881 McGowen Street Long Beach CA 90808	Common	08/24/2026	7754	539896.23
ARJUN KAMPANI 3881 McGowen Street Long Beach CA 90808	Common	06/18/2026	88000	9502240.00
10b5-1 Sales for ARJUN KAMPANI 3881 McGowen Street Long Beach CA 90808	Common	05/28/2026	23804	3509510.40

144: Remarks and Signature

Remarks
Date of Notice	08/27/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	09/19/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Arjun Kampani
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)