RKLB

SEC source: 0002001011-25-000080 · edgardoc.xml · derivative · entry 4

Spice Adam C. · CIK 0001509421 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,254,155

Underlying: Common Stock · 1,867,496 shares

Expires 2028-08-03

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_date: The stock option was granted on August 3, 2018, and had a vesting commencement date of May 25, 2018. 1/4 of the shares subject to the stock option vest on the one year anniversary of the vesting commencement date, and 1/48 of the shares subject to the stock option vest on a monthly basis each month thereafter, subject, in each case, to the reporting person's continued service relationship through each applicable vesting date.

SEC source: 0002001011-25-000080 · edgardoc.xml · nonDerivative · entry 1

Spice Adam C. · CIK 0001509421 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,932,477

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0002001011-25-000077 · edgardoc.xml · nonDerivative · entry 7

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,316,005

F7 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 13, 2024.

F9 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.6700 to $48.3500, 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 range set forth in this footnote.

SEC source: 0002001011-25-000077 · edgardoc.xml · nonDerivative · entry 6

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,318,442

F7 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 13, 2024.

F8 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $46.6700 to $47.6600, 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 range set forth in this footnote.

SEC source: 0002001011-25-000076 · edgardoc.xml · nonDerivative · entry 7

Kampani Arjun · CIK 0001671507 · SVP General Counsel &

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 489,629

F7 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2024.

F9 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.6000 to $48.4400, 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 range set forth in this footnote.

SEC source: 0002001011-25-000076 · edgardoc.xml · nonDerivative · entry 6

Kampani Arjun · CIK 0001671507 · SVP General Counsel &

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 496,045

F7 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2024.

F8 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $46.5300 to $47.4600, 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 range set forth in this footnote.

SEC source: 0002001011-25-000072 · primary_doc.xml · nonDerivative · entry 8

Beck Peter · CIK 0001881842 · Director · President, CEO and Chairman

Beck Kerryn · CIK 0001880895 · Voluntary Filer

Butler Warren · CIK 0001880893 · Voluntary Filer

Equatorial Trust · CIK 0001881791 · Voluntary Filer

Peek Street Equatorial Trustee Ltd · CIK 0001881857 · Voluntary Filer

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 2,500,000

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Equatorial Trust (the "Trust") on June 13, 2025.

F10 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.4100 to $52.0500, inclusive. The reporting persons undertake 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 range set forth in this footnote.

F3 · ownership.nature: These shares are held directly by the Trust. Peek Street Equatorial Trustee Limited (the "Trustee") is the trustee of the Trust and each of Peter Beck, Kerryn Beck and Warren Butler serve as a director of the Trustee with shared voting and investment control of the shares and, as a result, the Trustee and each such individual is deemed to be an indirect beneficial owner of these securities. Each reporting person disclaims beneficial ownership of these securities, except to the extent, if any, of his, her or its pecuniary interest therein, and the filing of this Form 4 is not an admission that any reporting person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

SEC source: 0002001011-25-000072 · primary_doc.xml · nonDerivative · entry 7

Beck Peter · CIK 0001881842 · Director · President, CEO and Chairman

Beck Kerryn · CIK 0001880895 · Voluntary Filer

Butler Warren · CIK 0001880893 · Voluntary Filer

Equatorial Trust · CIK 0001881791 · Voluntary Filer

Peek Street Equatorial Trustee Ltd · CIK 0001881857 · Voluntary Filer

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 2,512,177

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Equatorial Trust (the "Trust") on June 13, 2025.

F9 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.4100 to $51.4000, inclusive. The reporting persons undertake 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 range set forth in this footnote.

F3 · ownership.nature: These shares are held directly by the Trust. Peek Street Equatorial Trustee Limited (the "Trustee") is the trustee of the Trust and each of Peter Beck, Kerryn Beck and Warren Butler serve as a director of the Trustee with shared voting and investment control of the shares and, as a result, the Trustee and each such individual is deemed to be an indirect beneficial owner of these securities. Each reporting person disclaims beneficial ownership of these securities, except to the extent, if any, of his, her or its pecuniary interest therein, and the filing of this Form 4 is not an admission that any reporting person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

SEC source: 0002001011-25-000072 · primary_doc.xml · nonDerivative · entry 6

Beck Peter · CIK 0001881842 · Director · President, CEO and Chairman

Beck Kerryn · CIK 0001880895 · Voluntary Filer

Butler Warren · CIK 0001880893 · Voluntary Filer

Equatorial Trust · CIK 0001881791 · Voluntary Filer

Peek Street Equatorial Trustee Ltd · CIK 0001881857 · Voluntary Filer

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 2,559,232

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Equatorial Trust (the "Trust") on June 13, 2025.

F8 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.4100 to $50.4050, inclusive. The reporting persons undertake 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 range set forth in this footnote.

F3 · ownership.nature: These shares are held directly by the Trust. Peek Street Equatorial Trustee Limited (the "Trustee") is the trustee of the Trust and each of Peter Beck, Kerryn Beck and Warren Butler serve as a director of the Trustee with shared voting and investment control of the shares and, as a result, the Trustee and each such individual is deemed to be an indirect beneficial owner of these securities. Each reporting person disclaims beneficial ownership of these securities, except to the extent, if any, of his, her or its pecuniary interest therein, and the filing of this Form 4 is not an admission that any reporting person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

SEC source: 0002001011-25-000072 · primary_doc.xml · nonDerivative · entry 5

Beck Peter · CIK 0001881842 · Director · President, CEO and Chairman

Beck Kerryn · CIK 0001880895 · Voluntary Filer

Butler Warren · CIK 0001880893 · Voluntary Filer

Equatorial Trust · CIK 0001881791 · Voluntary Filer

Peek Street Equatorial Trustee Ltd · CIK 0001881857 · Voluntary Filer

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 2,670,530

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Equatorial Trust (the "Trust") on June 13, 2025.

F7 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.4100 to $49.4050, inclusive. The reporting persons undertake 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 range set forth in this footnote.

F3 · ownership.nature: These shares are held directly by the Trust. Peek Street Equatorial Trustee Limited (the "Trustee") is the trustee of the Trust and each of Peter Beck, Kerryn Beck and Warren Butler serve as a director of the Trustee with shared voting and investment control of the shares and, as a result, the Trustee and each such individual is deemed to be an indirect beneficial owner of these securities. Each reporting person disclaims beneficial ownership of these securities, except to the extent, if any, of his, her or its pecuniary interest therein, and the filing of this Form 4 is not an admission that any reporting person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

SEC source: 0002001011-25-000072 · primary_doc.xml · nonDerivative · entry 4

Beck Peter · CIK 0001881842 · Director · President, CEO and Chairman

Beck Kerryn · CIK 0001880895 · Voluntary Filer

Butler Warren · CIK 0001880893 · Voluntary Filer

Equatorial Trust · CIK 0001881791 · Voluntary Filer

Peek Street Equatorial Trustee Ltd · CIK 0001881857 · Voluntary Filer

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 3,394,734

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Equatorial Trust (the "Trust") on June 13, 2025.

F6 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.4100 to $48.4050, inclusive. The reporting persons undertake 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 range set forth in this footnote.

F3 · ownership.nature: These shares are held directly by the Trust. Peek Street Equatorial Trustee Limited (the "Trustee") is the trustee of the Trust and each of Peter Beck, Kerryn Beck and Warren Butler serve as a director of the Trustee with shared voting and investment control of the shares and, as a result, the Trustee and each such individual is deemed to be an indirect beneficial owner of these securities. Each reporting person disclaims beneficial ownership of these securities, except to the extent, if any, of his, her or its pecuniary interest therein, and the filing of this Form 4 is not an admission that any reporting person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

SEC source: 0002001011-25-000077 · edgardoc.xml · nonDerivative · entry 5

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,320,291

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction in order to satisfy applicable tax withholding obligations in connection with the vesting and settlement of restricted stock units previously granted to the reporting person.

F6 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.1300 to $52.0500, 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 range set forth in this footnote.

SEC source: 0002001011-25-000077 · edgardoc.xml · nonDerivative · entry 4

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,322,708

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction in order to satisfy applicable tax withholding obligations in connection with the vesting and settlement of restricted stock units previously granted to the reporting person.

F5 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.1300 to $51.1100, 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 range set forth in this footnote.

SEC source: 0002001011-25-000077 · edgardoc.xml · nonDerivative · entry 3

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,327,169

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction in order to satisfy applicable tax withholding obligations in connection with the vesting and settlement of restricted stock units previously granted to the reporting person.

F4 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.1300 to $50.1200, 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 range set forth in this footnote.

SEC source: 0002001011-25-000077 · edgardoc.xml · nonDerivative · entry 2

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,336,338

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction in order to satisfy applicable tax withholding obligations in connection with the vesting and settlement of restricted stock units previously granted to the reporting person.

F3 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.1300 to $49.1200, 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 range set forth in this footnote.

SEC source: 0002001011-25-000077 · edgardoc.xml · nonDerivative · entry 1

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,357,582

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction in order to satisfy applicable tax withholding obligations in connection with the vesting and settlement of restricted stock units previously granted to the reporting person.

F2 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.1300 to $48.1200, 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 range set forth in this footnote.

SEC source: 0002001011-25-000076 · edgardoc.xml · nonDerivative · entry 5

Kampani Arjun · CIK 0001671507 · SVP General Counsel &

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 499,045

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction in order to satisfy applicable tax withholding obligations in connection with the vesting and settlement of restricted stock units previously granted to the reporting person.

F6 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.1300 to $52.0500, 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 range set forth in this footnote.

SEC source: 0002001011-25-000076 · edgardoc.xml · nonDerivative · entry 4

Kampani Arjun · CIK 0001671507 · SVP General Counsel &

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 500,701

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction in order to satisfy applicable tax withholding obligations in connection with the vesting and settlement of restricted stock units previously granted to the reporting person.

F5 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.1300 to $51.1100, 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 range set forth in this footnote.

SEC source: 0002001011-25-000076 · edgardoc.xml · nonDerivative · entry 3

Kampani Arjun · CIK 0001671507 · SVP General Counsel &

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 503,756

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction in order to satisfy applicable tax withholding obligations in connection with the vesting and settlement of restricted stock units previously granted to the reporting person.

F4 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.1300 to $50.1200, 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 range set forth in this footnote.

SEC source: 0002001011-25-000076 · edgardoc.xml · nonDerivative · entry 2

Kampani Arjun · CIK 0001671507 · SVP General Counsel &

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 510,035

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction in order to satisfy applicable tax withholding obligations in connection with the vesting and settlement of restricted stock units previously granted to the reporting person.

F3 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.1300 to $49.1200, 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 range set forth in this footnote.

SEC source: 0002001011-25-000076 · edgardoc.xml · nonDerivative · entry 1

Kampani Arjun · CIK 0001671507 · SVP General Counsel &

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 524,584

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction in order to satisfy applicable tax withholding obligations in connection with the vesting and settlement of restricted stock units previously granted to the reporting person.

F2 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.1300 to $48.1200, 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 range set forth in this footnote.

SEC source: 0002001011-25-000078 · edgardoc.xml · nonDerivative · entry 5

Spice Adam C. · CIK 0001509421 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,064,981

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction in order to satisfy applicable tax withholding obligations in connection with the vesting and settlement of restricted stock units previously granted to the reporting person.

F6 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.1300 to $52.0500, 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 range set forth in this footnote.

SEC source: 0002001011-25-000078 · edgardoc.xml · nonDerivative · entry 4

Spice Adam C. · CIK 0001509421 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,068,605

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction in order to satisfy applicable tax withholding obligations in connection with the vesting and settlement of restricted stock units previously granted to the reporting person.

F5 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.1300 to $51.1100, 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 range set forth in this footnote.

SEC source: 0002001011-25-000078 · edgardoc.xml · nonDerivative · entry 3

Spice Adam C. · CIK 0001509421 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,075,291

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction in order to satisfy applicable tax withholding obligations in connection with the vesting and settlement of restricted stock units previously granted to the reporting person.

F4 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.1300 to $50.1200, 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 range set forth in this footnote.

SEC source: 0002001011-25-000078 · edgardoc.xml · nonDerivative · entry 2

Spice Adam C. · CIK 0001509421 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,089,034

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction in order to satisfy applicable tax withholding obligations in connection with the vesting and settlement of restricted stock units previously granted to the reporting person.

F3 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.1300 to $49.1200, 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 range set forth in this footnote.

SEC source: 0002001011-25-000078 · edgardoc.xml · nonDerivative · entry 1

Spice Adam C. · CIK 0001509421 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,120,877

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction in order to satisfy applicable tax withholding obligations in connection with the vesting and settlement of restricted stock units previously granted to the reporting person.

F2 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.1300 to $48.1200, 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 range set forth in this footnote.

SEC source: 0001104659-25-091375 · tm2526461-1_4seq1.xml · nonDerivative · entry 16

Ocko Matthew · CIK 0001836089 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · SST Capital Management, LLC

Disclosed balance after: 164,026

F13 · kind: 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.

F14 · ownership.nature: 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.

SEC source: 0001104659-25-091375 · tm2526461-1_4seq1.xml · nonDerivative · entry 15

Ocko Matthew · CIK 0001836089 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Three Kingdoms Capital Partners, LP

Disclosed balance after: 9,894

F11 · kind: 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.

F12 · ownership.nature: 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.

SEC source: 0001104659-25-091375 · tm2526461-1_4seq1.xml · nonDerivative · entry 14

Ocko Matthew · CIK 0001836089 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F10 · kind: 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.

F3 · ownership.nature: 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.

SEC source: 0001104659-25-091375 · tm2526461-1_4seq1.xml · nonDerivative · entry 13

Ocko Matthew · CIK 0001836089 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F9 · kind: 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.

F2 · ownership.nature: 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.

SEC source: 0001104659-25-091375 · tm2526461-1_4seq1.xml · nonDerivative · entry 12

Ocko Matthew · CIK 0001836089 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,331,569

F8 · price: 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.

F3 · ownership.nature: 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.

SEC source: 0001104659-25-091375 · tm2526461-1_4seq1.xml · nonDerivative · entry 11

Ocko Matthew · CIK 0001836089 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 541,526

F8 · price: 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.

F2 · ownership.nature: 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.

SEC source: 0001104659-25-091375 · tm2526461-1_4seq1.xml · nonDerivative · entry 10

Ocko Matthew · CIK 0001836089 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,356,524

F7 · price: 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.

F3 · ownership.nature: 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.

SEC source: 0001104659-25-091375 · tm2526461-1_4seq1.xml · nonDerivative · entry 9

Ocko Matthew · CIK 0001836089 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 551,674

F7 · price: 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.

F2 · ownership.nature: 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.

SEC source: 0001104659-25-091375 · tm2526461-1_4seq1.xml · nonDerivative · entry 8

Ocko Matthew · CIK 0001836089 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,378,654

F6 · price: 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.

F3 · ownership.nature: 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.

SEC source: 0001104659-25-091375 · tm2526461-1_4seq1.xml · nonDerivative · entry 7

Ocko Matthew · CIK 0001836089 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 560,674

F6 · price: 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.

F2 · ownership.nature: 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.

SEC source: 0001104659-25-091375 · tm2526461-1_4seq1.xml · nonDerivative · entry 6

Ocko Matthew · CIK 0001836089 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,410,602

F5 · price: 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.

F3 · ownership.nature: 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.

SEC source: 0001104659-25-091375 · tm2526461-1_4seq1.xml · nonDerivative · entry 5

Ocko Matthew · CIK 0001836089 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 573,667

F5 · price: 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.

F2 · ownership.nature: 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.

SEC source: 0001104659-25-091375 · tm2526461-1_4seq1.xml · nonDerivative · entry 4

Ocko Matthew · CIK 0001836089 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,576,355

F4 · price: 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.

F3 · ownership.nature: 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.

SEC source: 0001104659-25-091375 · tm2526461-1_4seq1.xml · nonDerivative · entry 3

Ocko Matthew · CIK 0001836089 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 641,076

F4 · price: 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.

F2 · ownership.nature: 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.

SEC source: 0001104659-25-091375 · tm2526461-1_4seq1.xml · nonDerivative · entry 2

Ocko Matthew · CIK 0001836089 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,917,900

F1 · price: 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.

F3 · ownership.nature: 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.

SEC source: 0001104659-25-091375 · tm2526461-1_4seq1.xml · nonDerivative · entry 1

Ocko Matthew · CIK 0001836089 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 779,977

F1 · price: 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.

F2 · ownership.nature: 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.

SEC source: 0002001011-25-000072 · primary_doc.xml · nonDerivative · entry 3

Beck Peter · CIK 0001881842 · Director · President, CEO and Chairman

Beck Kerryn · CIK 0001880895 · Voluntary Filer

Butler Warren · CIK 0001880893 · Voluntary Filer

Equatorial Trust · CIK 0001881791 · Voluntary Filer

Peek Street Equatorial Trustee Ltd · CIK 0001881857 · Voluntary Filer

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 3,936,442

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Equatorial Trust (the "Trust") on June 13, 2025.

F5 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $54.7900 to $55.1600, inclusive. The reporting persons undertake 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 range set forth in this footnote.

F3 · ownership.nature: These shares are held directly by the Trust. Peek Street Equatorial Trustee Limited (the "Trustee") is the trustee of the Trust and each of Peter Beck, Kerryn Beck and Warren Butler serve as a director of the Trustee with shared voting and investment control of the shares and, as a result, the Trustee and each such individual is deemed to be an indirect beneficial owner of these securities. Each reporting person disclaims beneficial ownership of these securities, except to the extent, if any, of his, her or its pecuniary interest therein, and the filing of this Form 4 is not an admission that any reporting person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

SEC source: 0002001011-25-000072 · primary_doc.xml · nonDerivative · entry 2

Beck Peter · CIK 0001881842 · Director · President, CEO and Chairman

Beck Kerryn · CIK 0001880895 · Voluntary Filer

Butler Warren · CIK 0001880893 · Voluntary Filer

Equatorial Trust · CIK 0001881791 · Voluntary Filer

Peek Street Equatorial Trustee Ltd · CIK 0001881857 · Voluntary Filer

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 3,970,423

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Equatorial Trust (the "Trust") on June 13, 2025.

F4 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $53.7900 to $54.7800, inclusive. The reporting persons undertake 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 range set forth in this footnote.

F3 · ownership.nature: These shares are held directly by the Trust. Peek Street Equatorial Trustee Limited (the "Trustee") is the trustee of the Trust and each of Peter Beck, Kerryn Beck and Warren Butler serve as a director of the Trustee with shared voting and investment control of the shares and, as a result, the Trustee and each such individual is deemed to be an indirect beneficial owner of these securities. Each reporting person disclaims beneficial ownership of these securities, except to the extent, if any, of his, her or its pecuniary interest therein, and the filing of this Form 4 is not an admission that any reporting person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

SEC source: 0002001011-25-000072 · primary_doc.xml · nonDerivative · entry 1

Beck Peter · CIK 0001881842 · Director · President, CEO and Chairman

Beck Kerryn · CIK 0001880895 · Voluntary Filer

Butler Warren · CIK 0001880893 · Voluntary Filer

Equatorial Trust · CIK 0001881791 · Voluntary Filer

Peek Street Equatorial Trustee Ltd · CIK 0001881857 · Voluntary Filer

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 4,670,379

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Equatorial Trust (the "Trust") on June 13, 2025.

F2 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $52.7900 to $53.7875, inclusive. The reporting persons undertake 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 range set forth in this footnote.

F3 · ownership.nature: These shares are held directly by the Trust. Peek Street Equatorial Trustee Limited (the "Trustee") is the trustee of the Trust and each of Peter Beck, Kerryn Beck and Warren Butler serve as a director of the Trustee with shared voting and investment control of the shares and, as a result, the Trustee and each such individual is deemed to be an indirect beneficial owner of these securities. Each reporting person disclaims beneficial ownership of these securities, except to the extent, if any, of his, her or its pecuniary interest therein, and the filing of this Form 4 is not an admission that any reporting person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

SEC source: 0002001011-25-000064 · edgardoc.xml · nonDerivative · entry 1

Olson Jon A · CIK 0001331263 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 436,235

F1 · shares: Represents restricted stock units ("RSUs") granted to the Reporting Person under the Rocket Lab Corporation Amended and Restated Non-Employee Director Compensation Policy, and the Rocket Lab Corporation 2021 Stock Option and Incentive Plan. Such RSUs will vest in full on the earlier of (i) the date of the Issuer's next Annual Meeting of Stockholders and (ii) the one-year anniversary of the date of grant, subject to the Reporting Person's continuous service as a member of the Board of Directors through such date.

SEC source: 0002001011-25-000062 · edgardoc.xml · nonDerivative · entry 1

Slusky Alexander R · CIK 0001357262 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 123,849

F1 · shares: Represents restricted stock units ("RSUs") granted to the Reporting Person under the Rocket Lab Corporation Amended and Restated Non-Employee Director Compensation Policy, and the Rocket Lab Corporation 2021 Stock Option and Incentive Plan. Such RSUs will vest in full on the earlier of (i) the date of the Issuer's next Annual Meeting of Stockholders and (ii) the one-year anniversary of the date of grant, subject to the Reporting Person's continuous service as a member of the Board of Directors through such date.

SEC source: 0002001011-25-000065 · edgardoc.xml · nonDerivative · entry 1

Possenriede Kenneth R · CIK 0001524478 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 94,178

F1 · shares: Represents restricted stock units ("RSUs") granted to the Reporting Person under the Rocket Lab Corporation Amended and Restated Non-Employee Director Compensation Policy, and the Rocket Lab Corporation 2021 Stock Option and Incentive Plan. Such RSUs will vest in full on the earlier of (i) the date of the Issuer's next Annual Meeting of Stockholders and (ii) the one-year anniversary of the date of grant, subject to the Reporting Person's continuous service as a member of the Board of Directors through such date.

SEC source: 0002001011-25-000063 · edgardoc.xml · nonDerivative · entry 1

Frank Edward H. · CIK 0001589827 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 150,004

F1 · shares: Represents restricted stock units ("RSUs") granted to the Reporting Person under the Rocket Lab Corporation Amended and Restated Non-Employee Director Compensation Policy, and the Rocket Lab Corporation 2021 Stock Option and Incentive Plan. Such RSUs will vest in full on the earlier of (i) the date of the Issuer's next Annual Meeting of Stockholders and (ii) the one-year anniversary of the date of grant, subject to the Reporting Person's continuous service as a member of the Board of Directors through such date.

SEC source: 0002001011-25-000066 · edgardoc.xml · nonDerivative · entry 1

Saintil Merline · CIK 0001699497 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 423,529

F1 · shares: Represents restricted stock units ("RSUs") granted to the Reporting Person under the Rocket Lab Corporation Amended and Restated Non-Employee Director Compensation Policy, and the Rocket Lab Corporation 2021 Stock Option and Incentive Plan. Such RSUs will vest in full on the earlier of (i) the date of the Issuer's next Annual Meeting of Stockholders and (ii) the one-year anniversary of the date of grant, subject to the Reporting Person's continuous service as a member of the Board of Directors through such date.