Rocket Lab officer plans $2.35M stock sale

Rocket Lab Corp (RKLB) had a notice filed under Rule 144 for a planned sale of its common stock by officer Frank Klein.

Rhea-AI Filing Summary

Rocket Lab Corp (RKLB) had a notice filed under Rule 144 for a planned sale of its common stock by officer Frank Klein. The notice covers 35,558 shares to be sold through Morgan Stanley Smith Barney, with an indicated aggregate market value of $2,353,228.44. The issuer’s common shares outstanding are listed as 598,350,482 as of August 27, 2026. The filing also reports that Klein sold 45,692 shares on August 24, 2026 for $3,181,443.24, and 36,860 shares on May 28, 2026 for $5,433,997.04.

Key Figures

Shares to be sold: 35,558 shares Aggregate market value of planned sale: $2,353,228.44 Shares outstanding: 598,350,482 shares +4 more

7 metrics

Shares to be sold 35,558 shares Common stock covered by the Rule 144 notice

Aggregate market value of planned sale $2,353,228.44 Value associated with 35,558 Rocket Lab common shares

Shares outstanding 598,350,482 shares Rocket Lab common shares outstanding as of August 27, 2026

Shares sold on August 24, 2026 45,692 shares Rocket Lab common stock sold by Frank Klein

Value of August 24, 2026 sale $3,181,443.24 Proceeds associated with 45,692 shares of common stock

Shares sold on May 28, 2026 36,860 shares Rocket Lab common stock sold by Frank Klein

Value of May 28, 2026 sale $5,433,997.04 Proceeds associated with 36,860 shares of common stock

Key Terms

Rule 144, Restricted Stock Units, aggregate market value

3 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.

aggregate market value financial

"Common ... | 35558 | 2353228.44 | 598350482 | 08/27/2026"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

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

What does the Form 144 filing disclose for Rocket Lab Corp (RKLB)?

The filing discloses that officer Frank Klein plans to sell 35,558 shares of Rocket Lab Corp common stock under Rule 144, with an indicated aggregate market value of $2,353,228.44, and lists prior sales over the past three months.

How many RKLB shares is Frank Klein planning to sell under this Form 144?

Frank Klein is planning to sell 35,558 shares of Rocket Lab Corp common stock. The notice lists these shares with an indicated aggregate market value of $2,353,228.44 and identifies the broker as Morgan Stanley Smith Barney LLC Executive Financial Services.

What Rocket Lab (RKLB) insider sales occurred in the past three months?

The notice reports that Frank Klein sold 45,692 shares of Rocket Lab common stock on August 24, 2026 for $3,181,443.24 and 36,860 shares on May 28, 2026 for $5,433,997.04.

How many Rocket Lab (RKLB) common shares are reported outstanding?

The document lists Rocket Lab Corp common shares outstanding as 598,350,482 as of August 27, 2026. This figure provides context for the size of the planned and recent sales reported for Frank Klein.

What type of Rocket Lab (RKLB) securities are involved in this Form 144?

The Form 144 involves Rocket Lab Corp common stock. The shares to be sold are tied to Restricted Stock Units acquired from the issuer, with an acquisition date shown as August 22, 2026.

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

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Available on EDGAR 08/27/2026 - 04:18 PM EDT Accepted by SEC EDGAR 08/27/2026 - 04:18 PM EDT 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	0002037530
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	FRANK KLEIN
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	35558	2353228.44	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			35558	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
FRANK KLEIN 3881 McGowen Street Long Beach CA 90808	Common	08/24/2026	45692	3181443.24
FRANK KLEIN 3881 McGowen Street Long Beach CA 90808	Common	05/28/2026	36860	5433997.04

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/ Frank Klein
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)