[144] Rocket Lab Corp SEC Filing

Rhea-AI Filing Summary

Rocket Lab Corp (RKLB) filed a Form 144 reporting proposed sales of Common stock by a person whose restricted shares vested on 09/15/2025. The filing lists two proposed sales through Morgan Stanley Smith Barney LLC: 22,991 shares (aggregate market value $1,125,768.11) and 8,194 shares (aggregate market value $401,224.13), both planned for sale on 09/16/2025 on NASDAQ. The filer states the shares were acquired by restricted stock vesting from the issuer on 09/15/2025 and that payment was compensation. No securities were reported sold by the person in the past three months in this filing.

Positive

• Clear disclosure of broker, share counts, aggregate market values, and planned sale date
• Acquisition method disclosed as restricted stock vesting with exact acquisition date (09/15/2025)
• No securities sold in the past three months by the person for whose account the securities are to be sold

Negative

• None.

Insights

Securities Analyst

TL;DR: Routine insider filing disclosing planned sales of vested restricted shares via a broker, no past 3-month sales reported.

The Form 144 provides standard notice of proposed sales required under Rule 144. It identifies the broker (Morgan Stanley Smith Barney LLC), specifies the number of shares and aggregate market values, and links the acquisition to restricted stock vesting on 09/15/2025 with planned sale date 09/16/2025 on NASDAQ. The disclosure allows market participants to track potential dilution or insider selling, though the reported amounts represent a very small fraction of the total shares outstanding of 483,960,665.

Corporate Governance Expert

TL;DR: Compliance-focused filing showing insider compliance with disclosure rules after restricted stock vesting.

This filing meets Rule 144 notice requirements by detailing acquisition date, nature (restricted stock vesting), compensation as payment type, broker details, and planned sale timing. The signer affirms no undisclosed material adverse information. The filing is procedural and provides transparency into an insider’s intended disposition following vesting.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	22991	1125768.11	483960665	09/16/2025	NASDAQ
Common	MORGAN STANLEY SMITH BARNEY LLC EXECUTIVE SERVICES 200 W CIVIC CENTER DR. 4TH FLOOR SANDY UT 84070	8194	401224.13	483960665	09/16/2025	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	09/15/2025	Restricted Stock Vesting	Issuer			38684	09/15/2025	Compensation
Common	09/15/2025	Restricted Stock Vesting	Issuer			13787	09/15/2025	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

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

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

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

FAQ

What does Rocket Lab's (RKLB) Form 144 report?

The Form 144 reports proposed sales of Common stock totaling 31,185 shares via Morgan Stanley Smith Barney LLC with planned sale date 09/16/2025.

How many shares and aggregate value are listed for sale in the filing?

Two entries: 22,991 shares valued at $1,125,768.11 and 8,194 shares valued at $401,224.13.

When were the shares acquired according to the filing?

Both reported blocks were acquired on 09/15/2025 through restricted stock vesting from the issuer.

Which broker will handle the proposed sales?

The filing names Morgan Stanley Smith Barney LLC (Executive Services, Sandy, UT) as the broker.

Does the filer report any sales in the past three months?

The filing states Nothing to Report for securities sold during the past three months.