[144] Rocket Lab Corp SEC Filing

Rhea-AI Filing Summary

Rocket Lab Corp (RKLB) filing a Form 144 notifies a proposed sale of 874,588 common shares through Morgan Stanley Smith Barney LLC, with an aggregate market value of $41,985,296.61. The filing states the shares were acquired on 09/18/2025 via previously exercised options and paid for in cash on the same date. The filer reports 479,355,713 shares outstanding for the issuer and lists an approximate sale date of 09/19/2025 on the NASDAQ. The filing indicates no securities sold by the account in the past three months and includes the standard representation that the seller is not aware of undisclosed material adverse information.

Positive

• None.

Negative

• Proposed sale of 874,588 common shares for an aggregate market value of $41,985,296.61, which is a sizable insider transaction
• The filing does not state a 10b5-1 plan adoption date or additional context about the reason for the sale

Insights

Securities Analyst

TL;DR: Insider plans to sell 874,588 shares valued at about $42M, acquired via option exercise the prior day; routine Form 144 disclosure.

The filing documents a proposed sale under Rule 144 of 874,588 shares acquired by previously exercised options on 09/18/2025. The broker is Morgan Stanley Smith Barney LLC and the sale is scheduled for 09/19/2025. The notice confirms payment in cash and that no sales were reported in the prior three months. From a regulatory perspective this is a standard disclosure required for restricted or control securities; it does not by itself disclose motives or company operational information.

Corporate Governance Expert

TL;DR: Form 144 is procedural; it signals an insider transaction but provides no new company-specific operational details.

The form contains the mandatory attestations and a representation that the signer is unaware of undisclosed material adverse information. It identifies the method of acquisition (previously exercised options) and immediate planned sale via an institutional broker. This is consistent with compliance with Rule 144 and 10b5-1 considerations when applicable, but the filing does not include a trading-plan adoption date or additional contextual governance disclosures.

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 Financial Services 1 New York Plaza 8th Floor New York NY 10004	874588	41985296.61	479355713	09/19/2025	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	09/18/2025	Previously Exercised Options	Issuer			874588	09/18/2025	Cash

* 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 disclose?

The Form 144 discloses a proposed sale of 874,588 common shares through Morgan Stanley Smith Barney LLC with an aggregate market value of $41,985,296.61 and an approximate sale date of 09/19/2025.

How were the RKLB shares acquired that are being sold?

The shares were acquired on 09/18/2025 through previously exercised options and paid for in cash on that date.

How many Rocket Lab shares are outstanding according to the filing?

The filing reports 479,355,713 shares outstanding for the issuer.

Does the Form 144 report prior sales in the past three months for RKLB?

No; the filing states Nothing to Report for securities sold during the past three months by the person for whose account the securities are to be sold.

Who is the broker handling the proposed RKLB sale?

The broker named is Morgan Stanley Smith Barney LLC, Executive Financial Services, 1 New York Plaza, 8th Floor, New York, NY 10004.