Rocket Lab officer plans sale of 31,909 shares

Rocket Lab Corp (RKLB) reports that officer Marvin Bradford Clevenger has filed a Rule 144 notice covering a proposed sale of 31,909 shares of common stock, expected on or after 08/22/2026.

Rhea-AI Filing Summary

Rocket Lab Corp (RKLB) reports that officer Marvin Bradford Clevenger has filed a Rule 144 notice covering a proposed sale of 31,909 shares of common stock, expected on or after 08/22/2026. The shares arise from Restricted Stock Vesting received as compensation, and sales will be handled through Morgan Stanley Smith Barney LLC Executive Services. The notice states the sale includes shares needed to cover a tax obligation from the settlement of a vested equity award. It also lists prior sales of Rocket Lab common stock by Clevenger during May 2026.

Key Figures

Shares to be sold under Rule 144: 31,909 shares of common stock Prior sale 1: 3,500 shares; $513,355.85 Prior sale 2: 14,622 shares; $2,084,709.94 +2 more

5 metrics

Shares to be sold under Rule 144 31,909 shares of common stock Securities To Be Sold section, acquisition via Restricted Stock Vesting dated 08/22/2026

Prior sale 1 3,500 shares; $513,355.85 Common stock sold on 05/28/2026 in past 3 months

Prior sale 2 14,622 shares; $2,084,709.94 Common stock sold on 05/26/2026 in past 3 months

Prior sale 3 927 shares; $132,165.65 Common stock sold on 05/26/2026 in past 3 months

Broker-related share figure 15,051 shares; $1,047,882.84 Common stock position listed with Morgan Stanley Smith Barney LLC Executive Services

Key Terms

Rule 144, Restricted Stock Vesting, equity award distribution, Attorney-in-Fact

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 Vesting financial

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

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

equity award distribution financial

"resulting from the settlement of a vested equity award distribution."

Attorney-in-Fact regulatory

"Signature | /s/ Arjun Kampani, as Attorney-in-Fact for Marvin B. Clevenger"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

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

What insider transaction did RKLB disclose in this Form 144 notice?

The notice states that officer Marvin Bradford Clevenger plans to sell 31,909 shares of Rocket Lab Corp common stock under Rule 144. The shares are tied to Restricted Stock Vesting compensation and include an amount to cover a related tax obligation.

When are the RKLB shares covered by this Form 144 expected to be sold?

The shares covered by the notice are associated with an acquisition date of 08/22/2026, and the Form 144 is dated 08/24/2026. These dates frame the expected timing of the proposed Rule 144 sale of Rocket Lab common stock.

How many RKLB shares has Marvin Bradford Clevenger sold in the past 3 months?

The filing lists three prior sales of Rocket Lab common stock by Marvin Bradford Clevenger in the past 3 months: 3,500 shares on 05/28/2026, 14,622 shares on 05/26/2026, and 927 shares on 05/26/2026.

What proceeds were reported from Marvin Bradford Clevenger’s recent RKLB share sales?

For past 3‑month sales of Rocket Lab Corp stock, the notice reports proceeds of $513,355.85 for 3,500 shares sold on 05/28/2026, $2,084,709.94 for 14,622 shares sold on 05/26/2026, and $132,165.65 for 927 shares sold on 05/26/2026.

Why does the RKLB Form 144 mention tax obligations?

The remarks explain that the planned sale under Rule 144 includes an amount of Rocket Lab common stock necessary to cover a tax obligation arising from the settlement of a vested equity award distribution to Marvin Bradford Clevenger.

Which broker is handling the planned RKLB Rule 144 sale?

The Rule 144 notice identifies Morgan Stanley Smith Barney LLC Executive Services as the broker associated with the Rocket Lab Corp common stock position from which Marvin Bradford Clevenger’s proposed sale will be effected.

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

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Available on EDGAR 08/24/2026 - 09:01 PM EDT Accepted by SEC EDGAR 08/24/2026 - 09:01 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	0002127567
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 Corp
SEC File Number	001-39560
Address of Issuer	3881 MCGOWEN STREET LONG BEACH CALIFORNIA 90808
Phone	714-465-5737
Name of Person for Whose Account the Securities are To Be Sold	Clevenger Marvin Bradford
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 SERVICES 200 W CIVIC CENTER DR. 4TH FLOOR SANDY UT 84070	15051	1047882.84	598459739	08/24/2026	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 Vesting	Issuer			31909	08/22/2026	Compensation

* 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
MARVIN BRADFORD CLEVENGER 3881 McGowen Street Long Beach CA 90808	Common	05/28/2026	3500	513355.85
MARVIN BRADFORD CLEVENGER 3881 McGowen Street Long Beach CA 90808	Common	05/26/2026	14622	2084709.94
MARVIN BRADFORD CLEVENGER 3881 McGowen Street Long Beach CA 90808	Common	05/26/2026	927	132165.65

144: Remarks and Signature

Remarks	Sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution.
Date of Notice	08/24/2026
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, as Attorney-in-Fact for Marvin B. Clevenger
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)