Rule 144 notice: Morgan Stanley Smith Barney lists vested RKLB shares

Morgan Stanley Smith Barney LLC Executive Services filed a Rule 144 notice related to proposed resales of Common Stock tied to restricted stock vesting.

Rhea-AI Filing Summary

Morgan Stanley Smith Barney LLC Executive Services filed a Rule 144 notice related to proposed resales of Common Stock tied to restricted stock vesting. The filing lists 38,685 and 13,787 shares with a 05/22/2026 vesting date under compensation. It also reports recent sales by Arjun Kampani of 21,135, 7,626, and 23,711 shares during March 2026 with dollar amounts shown.

Insights

Securities Compliance Counsel

Notice of proposed resale under Rule 144 for vested restricted shares.

The filing lists restricted stock vesting of 38,685 and 13,787 shares dated 05/22/2026, identified as compensation issued by Morgan Stanley Smith Barney LLC Executive Services. This is a routine resale notice under Rule 144 procedures.

Reported open-market sales by Arjun Kampani in March 2026 are included with per‑trade share counts and aggregate dollar amounts. Cash‑flow treatment and any broker arrangements are not stated in the excerpt.

Key Figures

Vested restricted shares (first lot): 38,685 shares Vested restricted shares (second lot): 13,787 shares Sale by Arjun Kampani (1): 21,135 shares +2 more

5 metrics

Vested restricted shares (first lot) 38,685 shares Restricted Stock Vesting date <date>05/22/2026</date>

Vested restricted shares (second lot) 13,787 shares Restricted Stock Vesting date <date>05/22/2026</date>

Sale by Arjun Kampani (1) 21,135 shares Sale date <date>03/02/2026</date>, proceeds listed as <money>$1,470,782.03</money>

Sale by Arjun Kampani (2) 7,626 shares Sale date <date>03/02/2026</date>, proceeds listed as <money>$530,692.39</money>

Sale by Arjun Kampani (3) 23,711 shares Sale date <date>03/04/2026</date>, proceeds listed as <money>$1,662,852.43</money>

Key Terms

Rule 144, Restricted Stock Vesting, Issuer

3 terms

Rule 144 regulatory

"filed a Rule 144 notice related to proposed resales"

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

"Restricted Stock Vesting date 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.

Issuer regulatory

"Restricted Stock Vesting | Issuer | Compensation"

FAQ

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

What does the RKLB Rule 144 filing disclose?

It discloses proposed resales of vested restricted shares and recent insider sales. The filing lists 38,685 and 13,787 shares vesting on 05/22/2026, and March 2026 sales by Arjun Kampani of 21,135, 7,626, and 23,711 shares with dollar figures shown.

Who is the filer in the RKLB Rule 144 notice?

The filer is Morgan Stanley Smith Barney LLC Executive Services. The filing identifies that entity as the holder of restricted compensation shares vesting on 05/22/2026 totaling 38,685 and 13,787 shares in the excerpt provided.

What recent sales by insiders are reported in the RKLB filing?

The excerpt reports three sales by Arjun Kampani in March 2026. The transactions show sales of 21,135, 7,626, and 23,711 shares with corresponding dollar amounts listed alongside each trade in the filing excerpt.

Do the RKLB filing entries state how proceeds will be used?

The filing excerpt does not state use of proceeds. It lists share counts, vesting dates, and historical sales with dollar amounts but does not describe any allocation or recipient of sale proceeds 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 - 09:17 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	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 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	Kampani Arjun
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	21135	3013291.24	578867475	05/26/2026	NASDAQ
Common	MORGAN STANLEY SMITH BARNEY LLC EXECUTIVE SERVICES 200 W CIVIC CENTER DR. 4TH FLOOR SANDY UT 84070	7533	1074006.29	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			38685	05/22/2026	Compensation
Common	05/22/2026	Restricted Stock Vesting	Issuer			13787	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
ARJUN KAMPANI 3881 McGowen Street Long Beach CA 90808	Common	03/02/2026	21135	1470782.03
ARJUN KAMPANI 3881 McGowen Street Long Beach CA 90808	Common	03/02/2026	7626	530692.39
ARJUN KAMPANI 3881 McGowen Street Long Beach CA 90808	Common	03/04/2026	23711	1662852.43

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