[Form 4] Rocket Lab Corp Insider Trading Activity

Rhea-AI Filing Summary

Matthew Ocko, a director of Rocket Lab Corp (RKLB), reported multiple dispositions of Common Stock on 09/16/2025. The Form 4 shows a series of sales and distributions that in aggregate disposed of 3,920,112 shares on that date at weighted average prices reported in grouped ranges from about $47.01 to $52.45 per share. The table lists multiple sale tranches (individual weighted-average prices shown in footnotes) and additional distributions for no consideration to limited partners and related entities, with certain shares held indirectly through venture funds and management entities. The filing includes footnotes clarifying record holders, distributions to partners, and disclaimers of beneficial ownership except to the extent of any pecuniary interest.

Positive

• Comprehensive disclosure of each tranche including weighted-average price ranges and detailed footnotes
• Clarification of indirect holdings through DCVC IV and DCVC Opportunity Fund II with disclaimers of beneficial ownership
• Pro rata distributions to partners and related entities are explicitly described, aiding transparency

Negative

• Large aggregate disposition of 3,920,112 shares reported on a single date, which could be perceived as significant insider selling
• Multiple tranche sales at varying prices may complicate interpretation of disposal intent

Insights

Financial Analyst

TL;DR: Director reported large, staged dispositions and partner distributions totaling 3.92M RKLB shares on 09/16/2025.

The filing documents substantial share disposals executed in multiple tranches at weighted-average prices reported across several ranges between ~$47.01 and ~$52.45. The sales are recorded as dispositions by the reporting person and by entities in which he is a managing member; parallel pro rata distributions for no consideration transferred shares to limited partners and other related entities. For investors, the filing provides transparent execution detail and clarifies indirect holdings through DCVC-related entities, but does not present company financial results or forward-looking information.

Corporate Governance Expert

TL;DR: Proper Section 16 disclosure of multiple sales and partner distributions with clear footnotes detailing ownership structure.

The Form 4 contains thorough explanatory footnotes describing record ownership via DCVC IV and DCVC Opportunity Fund II, distributions to limited partners and related entities, and disclaimers of beneficial ownership. The reporting person signed the form and provided weighted-average pricing ranges. This meets typical disclosure expectations for related-party fund holdings and distributions; no additional governance actions or exceptions are asserted in the filing.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Ocko Matthew

(Last) (First) (Middle)

C/O ROCKET LAB CORPORATION

3881 MCGOWEN STREET

(Street)

LONG BEACH CA 90808

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Rocket Lab Corp [ RKLB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
09/16/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/16/2025		S		303,076	D	$47.4874(1)	779,977	I	See Footnote(2)
Common Stock	09/16/2025		S		745,239	D	$47.4874(1)	1,917,900	I	See Footnote(3)
Common Stock	09/16/2025		S		138,901	D	$48.5271(4)	641,076	I	See Footnote(2)
Common Stock	09/16/2025		S		341,545	D	$48.5271(4)	1,576,355	I	See Footnote(3)
Common Stock	09/16/2025		S		67,409	D	$49.2372(5)	573,667	I	See Footnote(2)
Common Stock	09/16/2025		S		165,753	D	$49.2372(5)	1,410,602	I	See Footnote(3)
Common Stock	09/16/2025		S		12,993	D	$50.2431(6)	560,674	I	See Footnote(2)
Common Stock	09/16/2025		S		31,948	D	$50.2431(6)	1,378,654	I	See Footnote(3)
Common Stock	09/16/2025		S		9,000	D	$51.7871(7)	551,674	I	See Footnote(2)
Common Stock	09/16/2025		S		22,130	D	$51.7871(7)	1,356,524	I	See Footnote(3)
Common Stock	09/16/2025		S		10,148	D	$52.2274(8)	541,526	I	See Footnote(2)
Common Stock	09/16/2025		S		24,955	D	$52.2274(8)	1,331,569	I	See Footnote(3)
Common Stock	09/16/2025		J(9)		541,526	D	$0	0	I	See Footnote(2)
Common Stock	09/16/2025		J(10)		1,331,569	D	$0	0	I	See Footnote(3)
Common Stock	09/16/2025		J(11)		9,894	D	$0	9,894	I	Three Kingdoms Capital Partners, LP(12)
Common Stock	09/16/2025		J(13)		164,026	D	$0	164,026	I	SST Capital Management, LLC(14)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The price reported in column 4 is a weighted average price of the aggregate number of shares sold. These shares were sold in multiple transactions at prices ranging from $47.013 to $48.01, inclusive. The Reporting Person undertakes to provide to Rocket Lab Corporation (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

2. Represents securities held of record by Data Collective IV, L.P. ("DCVC IV"). Data Collective IV GP, LLC ("DCVC IV GP") is the general partner of DCVC IV and has sole voting and dispositive power with regard to the securities held by DCVC IV. The Reporting Person is a managing member of DCVC IV GP and shares voting and dispositive power with respect to the securities held by DCVC IV. The Reporting Person disclaims the existence of a "group" and disclaims beneficial ownership of such securities and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities, except to the extent of his indirect pecuniary interest therein, if any.

3. Represents securities held of record by DCVC Opportunity Fund II, L.P. ("DCVC Opportunity Fund II"). DCVC Opportunity Fund II GP, LLC ("DCVC Opportunity Fund II GP") is the general partner of DCVC Opportunity Fund II and has sole voting and dispositive power with regard to the securities held by DCVC Opportunity Fund II. The Reporting Person is a managing member of DCVC Opportunity Fund II GP and shares voting and dispositive power with respect to the securities held by DCVC Opportunity Fund II. The Reporting Person disclaims the existence of a "group" and disclaims beneficial ownership of such securities and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities, except to the extent of his indirect pecuniary interest therein, if any.

4. The price reported in column 4 is a weighted average price of the aggregate number of shares sold. These shares were sold in multiple transactions at prices ranging from $48.013 to $49.01, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

5. The price reported in column 4 is a weighted average price of the aggregate number of shares sold. These shares were sold in multiple transactions at prices ranging from $49.015 to $50.01, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

6. The price reported in column 4 is a weighted average price of the aggregate number of shares sold. These shares were sold in multiple transactions at prices ranging from $50.02 to $50.398, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

7. The price reported in column 4 is a weighted average price of the aggregate number of shares sold. These shares were sold in multiple transactions at prices ranging from $51.10 to $52.09, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

8. The price reported in column 4 is a weighted average price of the aggregate number of shares sold. These shares were sold in multiple transactions at prices ranging from $52.10 to $52.45, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

9. On September 16, 2025, DCVC IV distributed, for no consideration, 541,526 shares of Common Stock (the "DCVC IV Shares") to its limited partners and to DCVC IV GP, the general partner of DCVC IV, representing each such partner's pro rata interest in such DCVC IV Shares. DCVC IV GP then distributed, for no consideration, the DCVC IV Shares it received in the distribution by DCVC IV to its members, representing each such member's pro rata interest in such DCVC IV Shares.

10. On September 16, 2025, DCVC Opportunity Fund II distributed, for no consideration, 1,331,569 shares of Common Stock (the "DCVC Opportunity Fund II Shares") to its limited partners and to DCVC Opportunity Fund II GP, the general partner of DCVC Opportunity Fund II, representing each such partner's pro rata interest in such DCVC Opportunity Fund II Shares. DCVC Opportunity Fund II GP then distributed, for no consideration, the DCVC Opportunity Fund II Shares it received in the distribution by DCVC Opportunity Fund II to its members, representing each such member's pro rata interest in such DCVC Opportunity Fund II Shares.

11. Represents shares received by Three Kingdoms Capital Partners, LP pursuant to pro rata distributions by DCVC IV and DCVC Opportunity Fund II, for no consideration, of shares of Common Stock to their respective partners and such partners' members, as applicable.

12. The shares are held of record by Three Kingdoms Capital Partners, LP of which the Reporting Person is an indirect member of the general partner. The Reporting Person disclaims the existence of a "group" and disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

13. Represents shares received by SST Capital Management, LLC pursuant to pro rata distributions by DCVC IV and DCVC Opportunity Fund II, for no consideration, of shares of Common Stock to their respective partners and such partners' members, as applicable.

14. The shares are held of record by SST Capital Management, LLC of which the Reporting Person is a beneficial owner. The Reporting Person disclaims the existence of a "group" and disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

	/s/ Matthew Ocko	09/18/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Matthew Ocko report on Form 4 for RKLB?

The Form 4 reports multiple dispositions by Matthew Ocko on 09/16/2025, totaling 3,920,112 shares disposed across sales and distributions.

At what prices were the RKLB shares sold in the Form 4?

The filing lists weighted-average prices grouped into ranges with sales reported between approximately $47.01 and $52.45 per share (see footnotes for specific ranges).

Were any shares distributed rather than sold?

Yes. The Form 4 records distributions for no consideration of shares from DCVC IV and DCVC Opportunity Fund II to their partners and related entities on 09/16/2025.

How are the reported shares held after the transactions?

The filing shows various indirect holdings held of record by DCVC-related entities and others, with amounts and footnotes identifying record holders and disclaimers of beneficial ownership.

When was the Form 4 signed?

The signature block shows the Form 4 was signed by /s/ Matthew Ocko on 09/18/2025.