Rocket Lab officer proposes $9.77M share sale

Adam Clark Spice's reported prior three-month sales include transactions dated September 2, August 24, August 18 and August 17, 2026.

Rhea-AI Filing Summary

Rocket Lab Corp. (RKLB) officer Adam Clark Spice gave notice of a proposed sale of 140,157 common shares, with a reported aggregate market value of $9,766,139.76 and an approximate sale date of October 1, 2026. The shares are listed as acquired from the issuer through stock-option exercise for cash. Morgan Stanley Smith Barney LLC is named in the broker information.

Key Figures

Proposed sale: 140,157 shares Aggregate market value: $9,766,139.76 Shares sold: 140,157 shares +3 more

6 metrics

Proposed sale 140,157 shares Common shares; approximate sale date October 1, 2026

Aggregate market value $9,766,139.76 Proposed sale of common shares

Shares sold 140,157 shares September 2, 2026; listed under 10b5-1 sales

Reported sale amount $8,777,724.56 September 2, 2026

Shares sold 9,677 shares August 24, 2026; listed under 10b5-1 sales

Reported sale amount $673,790.46 August 24, 2026

Key Terms

Rule 144, 10b5-1 Sales, Exercise of Stock Options

3 terms

Rule 144 regulatory

"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.

10b5-1 Sales regulatory

"10b5-1 Sales for ADAM C SPICE"

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

Exercise of Stock Options financial

"Exercise of Stock Options | Issuer"

FAQ

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

How many RKLB shares does officer Adam Clark Spice propose to sell?

Adam Clark Spice gave notice of a proposed sale of 140,157 common shares, with a reported aggregate market value of $9,766,139.76 and an approximate sale date of October 1, 2026.

What prior sales are reported for Adam Clark Spice's RKLB shares?

Four sales are listed under the “10b5-1 Sales” heading: 140,157 shares for $8,777,724.56 on September 2, 2026; 9,677 shares for $673,790.46 on August 24, 2026; 30,908 shares for $2,484,247.50 on August 18, 2026; and 15,718 shares for $1,291,812.12 on August 17, 2026.

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

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Available on EDGAR 10/01/2026 - 04:24 PM Accepted by SEC EDGAR 10/01/2026 - 04:23 PM 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	0001509421
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 CORPORATION
SEC File Number	001-39560
Address of Issuer	3881 McGowen Street Long Beach CALIFORNIA 90808
Phone	7144655737
Name of Person for Whose Account the Securities are To Be Sold	ADAM C SPICE
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 Financial Services 1 New York Plaza 8th Floor New York NY 10004	140157	9766139.76	598350482	10/01/2026	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	10/01/2026	Exercise of Stock Options	Issuer			140157	10/01/2026	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for ADAM C SPICE 3881 McGowen Street Long Beach CA 90808	Common	09/02/2026	140157	8777724.56
ADAM C SPICE 3881 McGowen Street Long Beach CA 90808	Common	08/24/2026	9677	673790.46
ADAM C SPICE 3881 McGowen Street Long Beach CA 90808	Common	08/18/2026	30908	2484247.50
ADAM C SPICE 3881 McGowen Street Long Beach CA 90808	Common	08/17/2026	15718	1291812.12

144: Remarks and Signature

Remarks
Date of Notice	10/01/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/03/2026
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/ Adam Clark Spice
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)