Form 144: Proposed sale notice for common stock

Morgan Stanley Smith Barney LLC submitted a Form 144 notice relating to proposed and recent sales of Common Stock for an account tied to compensation.

Rhea-AI Filing Summary

Morgan Stanley Smith Barney LLC submitted a Form 144 notice relating to proposed and recent sales of Common Stock for an account tied to compensation. The filing lists 81,250 shares tied to restricted stock vesting on 05/22/2026 and two past sales: 44,482 shares on 03/02/2026 and 36,768 shares on 03/04/2026.

Insights

Securities Attorney

Form 144 records proposed and completed brokered sales tied to compensation vesting and prior dispositions.

The notice lists a planned disposition of 81,250 shares associated with restricted stock vesting on 05/22/2026, plus two completed sales of 44,482 and 36,768 shares on 03/02/2026 and 03/04/2026. The filing is procedural: it notifies the SEC of intended or recent brokered sales under Rule 144.

Timing and cash‑flow treatment are described as broker-handled transactions; specific proceeds recipients or resale limits are not stated in the excerpt. Subsequent filings or trade confirmations would show settlement and any withholding details.

Key Figures

Planned shares to be sold: 81,250 shares Sale on 03/02/2026: 44,482 shares Proceeds reported (03/02/2026): $3,095,496.86 +2 more

5 metrics

Planned shares to be sold 81,250 shares Restricted stock vesting on <date>05/22/2026</date>

Sale on 03/02/2026 44,482 shares Reported past sale on <date>03/02/2026</date>

Proceeds reported (03/02/2026) $3,095,496.86 Dollar amount listed alongside the 44,482-share sale

Sale on 03/04/2026 36,768 shares Reported past sale on <date>03/04/2026</date>

Proceeds reported (03/04/2026) $2,578,539.84 Dollar amount listed alongside the 36,768-share sale

Key Terms

Restricted Stock Vesting, Form 144, Compensation

3 terms

Restricted Stock Vesting financial

"Restricted Stock Vesting | Issuer | 81250 | 05/22/2026"

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.

Form 144 regulatory

"144: Securities To Be Sold"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Compensation financial

"05/22/2026 | Compensation"

FAQ

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

What does RKLB's Form 144 disclose about the proposed sale?

The filing discloses a proposed sale of 81,250 shares tied to restricted stock vesting on 05/22/2026. It records the account and method as compensation-related restricted stock vesting to be sold.

Which recent sales are reported in the Form 144 excerpt for RKLB?

The excerpt lists two sales: 44,482 shares on 03/02/2026 and 36,768 shares on 03/04/2026. Dollar amounts are shown alongside each sale in the filing extract.

Who is listed as the seller in the Form 144 excerpt for RKLB?

The extract names Frank Klein with an address and shows prior sales under his name on 03/02/2026 and 03/04/2026. The broker listed is Morgan Stanley Smith Barney LLC.

Does the Form 144 excerpt specify proceeds or recipient of sale proceeds?

The excerpt shows dollar figures for past sales ($3,095,496.86 and $2,578,539.84) but does not specify who received proceeds beyond listing the selling account and broker in the provided text.

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

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Accepted by SEC EDGAR 05/26/2026 - 09:19 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 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	Klein Frank
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	44390	6328838.33	578867475	05/26/2026	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	05/22/2026	Restricted Stock Vesting	Issuer			81250	05/22/2026	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
FRANK KLEIN 3881 McGowen Street Long Beach CA 90808	Common	03/02/2026	44482	3095496.86
FRANK KLEIN 3881 McGowen Street Long Beach CA 90808	Common	03/04/2026	36768	2578539.84

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	05/26/2026
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, as Attorney-in-Fact for Frank Klein
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)