RKLB

SEC source: 0002001011-25-000131 · edgardoc.xml · nonDerivative · entry 9

Armagno Nina · CIK 0001991365 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 108,940

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 19, 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 $69.8200 to $70.5400. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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: 0002001011-25-000131 · edgardoc.xml · nonDerivative · entry 8

Armagno Nina · CIK 0001991365 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 121,386

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 19, 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 $68.7900 to $69.7700. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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: 0002001011-25-000131 · edgardoc.xml · nonDerivative · entry 7

Armagno Nina · CIK 0001991365 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 125,848

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 19, 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 $67.7900 to $68.7200. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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: 0002001011-25-000131 · edgardoc.xml · nonDerivative · entry 6

Armagno Nina · CIK 0001991365 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 127,754

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 19, 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 $66.4700 to $67.3400. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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: 0002001011-25-000131 · edgardoc.xml · nonDerivative · entry 5

Armagno Nina · CIK 0001991365 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 128,254

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 19, 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 $65.3000 to $66.2600. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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: 0002001011-25-000131 · edgardoc.xml · nonDerivative · entry 4

Armagno Nina · CIK 0001991365 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 130,954

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 19, 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 $64.2800 to $65.2400. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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: 0002001011-25-000131 · edgardoc.xml · nonDerivative · entry 3

Armagno Nina · CIK 0001991365 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 133,654

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 19, 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 $63.1300 to $64.0600. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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: 0002001011-25-000131 · edgardoc.xml · nonDerivative · entry 2

Armagno Nina · CIK 0001991365 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 134,854

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 19, 2025.

F3 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $62.0000 to $62.9700. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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: 0002001011-25-000131 · edgardoc.xml · nonDerivative · entry 1

Armagno Nina · CIK 0001991365 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 136,054

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 19, 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 $60.9800 to $60.9900. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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: 0002001011-25-000128 · edgardoc.xml · nonDerivative · entry 4

Saintil Merline · CIK 0001699497 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 393,529

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 17, 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 $56.3700 to $56.5900. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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: 0002001011-25-000128 · edgardoc.xml · nonDerivative · entry 3

Saintil Merline · CIK 0001699497 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 393,729

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 17, 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 $55.3700 to $55.8600. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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: 0002001011-25-000128 · edgardoc.xml · nonDerivative · entry 2

Saintil Merline · CIK 0001699497 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 394,229

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 17, 2025.

F3 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $54.3700 to $55.3500. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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: 0002001011-25-000128 · edgardoc.xml · nonDerivative · entry 1

Saintil Merline · CIK 0001699497 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 395,996

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 17, 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 $53.3600 to $54.2900. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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: 0002001011-25-000126 · edgardoc.xml · nonDerivative · entry 14

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 0

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.

F16 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $55.6800 to $56.5900. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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, a family trust settled by Peter Beck and Kerryn Beck. 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 shares. Each Reporting Person disclaims beneficial ownership of these shares, 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 shares.

SEC source: 0002001011-25-000126 · edgardoc.xml · nonDerivative · entry 13

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 191,542

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.

F15 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $54.6800 to $55.6750. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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, a family trust settled by Peter Beck and Kerryn Beck. 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 shares. Each Reporting Person disclaims beneficial ownership of these shares, 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 shares.

SEC source: 0002001011-25-000126 · edgardoc.xml · nonDerivative · entry 12

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 527,052

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.

F14 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $53.6800 to $54.6750. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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, a family trust settled by Peter Beck and Kerryn Beck. 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 shares. Each Reporting Person disclaims beneficial ownership of these shares, 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 shares.

SEC source: 0002001011-25-000126 · edgardoc.xml · nonDerivative · entry 11

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 749,401

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.

F13 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $52.6800 to $53.6700. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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, a family trust settled by Peter Beck and Kerryn Beck. 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 shares. Each Reporting Person disclaims beneficial ownership of these shares, 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 shares.

SEC source: 0002001011-25-000126 · edgardoc.xml · nonDerivative · entry 10

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 939,746

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.

F12 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $64.1100 to $64.5250. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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, a family trust settled by Peter Beck and Kerryn Beck. 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 shares. Each Reporting Person disclaims beneficial ownership of these shares, 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 shares.

SEC source: 0002001011-25-000126 · edgardoc.xml · nonDerivative · entry 9

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 947,751

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.

F11 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $63.1100 to $64.1050. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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, a family trust settled by Peter Beck and Kerryn Beck. 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 shares. Each Reporting Person disclaims beneficial ownership of these shares, 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 shares.

SEC source: 0002001011-25-000126 · edgardoc.xml · nonDerivative · entry 8

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 990,803

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 $62.1100 to $63.1000. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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, a family trust settled by Peter Beck and Kerryn Beck. 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 shares. Each Reporting Person disclaims beneficial ownership of these shares, 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 shares.

SEC source: 0002001011-25-000126 · edgardoc.xml · nonDerivative · entry 7

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 1,037,755

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 $61.1100 to $62.1000. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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, a family trust settled by Peter Beck and Kerryn Beck. 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 shares. Each Reporting Person disclaims beneficial ownership of these shares, 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 shares.

SEC source: 0002001011-25-000126 · edgardoc.xml · nonDerivative · entry 6

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 1,057,274

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 $60.1100 to $61.1050. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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, a family trust settled by Peter Beck and Kerryn Beck. 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 shares. Each Reporting Person disclaims beneficial ownership of these shares, 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 shares.

SEC source: 0002001011-25-000126 · edgardoc.xml · nonDerivative · entry 5

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 1,107,757

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 $59.1100 to $60.1000. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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, a family trust settled by Peter Beck and Kerryn Beck. 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 shares. Each Reporting Person disclaims beneficial ownership of these shares, 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 shares.

SEC source: 0002001011-25-000126 · edgardoc.xml · nonDerivative · entry 4

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 1,142,059

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 $58.1100 to $59.1000. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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, a family trust settled by Peter Beck and Kerryn Beck. 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 shares. Each Reporting Person disclaims beneficial ownership of these shares, 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 shares.

SEC source: 0002001011-25-000126 · edgardoc.xml · nonDerivative · entry 3

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 1,271,609

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 $57.1100 to $58.1050. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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, a family trust settled by Peter Beck and Kerryn Beck. 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 shares. Each Reporting Person disclaims beneficial ownership of these shares, 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 shares.

SEC source: 0002001011-25-000126 · edgardoc.xml · nonDerivative · entry 2

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 1,644,717

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 $56.1100 to $57.1050. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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, a family trust settled by Peter Beck and Kerryn Beck. 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 shares. Each Reporting Person disclaims beneficial ownership of these shares, 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 shares.

SEC source: 0002001011-25-000126 · edgardoc.xml · nonDerivative · entry 1

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 2,182,011

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 $55.1100 to $56.1050. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, 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, a family trust settled by Peter Beck and Kerryn Beck. 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 shares. Each Reporting Person disclaims beneficial ownership of these shares, 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 shares.

SEC source: 0002001011-25-000124 · edgardoc.xml · nonDerivative · entry 1

Saintil Merline · CIK 0001699497 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 398,529

SEC source: 0002001011-25-000114 · edgardoc.xml · nonDerivative · entry 1

Saintil Merline · CIK 0001699497 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 413,529

SEC source: 0002001011-25-000111 · edgardoc.xml · nonDerivative · entry 2

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,269,487

F1 · 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.

F3 · price: The price reported in column 4 is a weighted average price of the aggregate number of shares. These shares were sold in multiple transactions in bulk at prices ranging from $43.0400 to $43.4100 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: 0002001011-25-000111 · edgardoc.xml · nonDerivative · entry 1

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,269,987

F1 · 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.

F2 · price: The price reported in column 4 is a weighted average price of the aggregate number of shares. These shares were sold in multiple transactions in bulk at prices ranging from $41.5800 to $42.2500 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: 0002001011-25-000110 · edgardoc.xml · nonDerivative · entry 2

Kampani Arjun · CIK 0001671507 · SVP General Counsel &

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 450,460

F1 · 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.

F3 · price: The price reported in column 4 is a weighted average price of the aggregate number of shares. These shares were sold in multiple transactions in bulk at prices ranging from $42.8200 to $43.4000 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: 0002001011-25-000110 · edgardoc.xml · nonDerivative · entry 1

Kampani Arjun · CIK 0001671507 · SVP General Counsel &

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 451,508

F1 · 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.

F2 · price: The price reported in column 4 is a weighted average price of the aggregate number of shares. These shares were sold in multiple transactions in bulk at prices ranging from $41.4600 to $42.2400 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: 0002001011-25-000108 · edgardoc.xml · nonDerivative · entry 3

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,274,223

F1 · shares: Represents the sale of Common 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 of the aggregate number of shares. These shares were sold in multiple transactions in bulk at prices ranging from $41.3400 to $41.4200 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: 0002001011-25-000108 · edgardoc.xml · nonDerivative · entry 2

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,274,394

F1 · shares: Represents the sale of Common 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 of the aggregate number of shares. These shares were sold in multiple transactions in bulk at prices ranging from $40.3400 to $41.3300 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: 0002001011-25-000108 · edgardoc.xml · nonDerivative · entry 1

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,305,575

F1 · shares: Represents the sale of Common 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 of the aggregate number of shares. These shares were sold in multiple transactions in bulk at prices ranging from $39.3400 to $40.3300 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: 0002001011-25-000106 · edgardoc.xml · nonDerivative · entry 4

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 902,942

F2 · shares: Represents the sale of Common 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 of the aggregate number of shares. These shares were sold in multiple transactions in bulk at prices ranging from $41.3400 to $41.4200 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: 0002001011-25-000106 · edgardoc.xml · nonDerivative · entry 3

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 903,019

F2 · shares: Represents the sale of Common 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 of the aggregate number of shares. These shares were sold in multiple transactions in bulk at prices ranging from $40.3400 to $41.3300 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: 0002001011-25-000106 · edgardoc.xml · nonDerivative · entry 2

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 917,092

F2 · shares: Represents the sale of Common 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 of the aggregate number of shares. These shares were sold in multiple transactions in bulk at prices ranging from $39.3400 to $40.3300 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: 0002001011-25-000107 · edgardoc.xml · nonDerivative · entry 3

Kampani Arjun · CIK 0001671507 · SVP General Counsel &

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 461,014

F1 · shares: Represents the sale of Common 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 of the aggregate number of shares. These shares were sold in multiple transactions in bulk at prices ranging from $41.3400 to $41.4200 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: 0002001011-25-000107 · edgardoc.xml · nonDerivative · entry 2

Kampani Arjun · CIK 0001671507 · SVP General Counsel &

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 461,131

F1 · shares: Represents the sale of Common 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 of the aggregate number of shares. These shares were sold in multiple transactions in bulk at prices ranging from $40.3400 to $41.3300 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: 0002001011-25-000107 · edgardoc.xml · nonDerivative · entry 1

Kampani Arjun · CIK 0001671507 · SVP General Counsel &

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 482,486

F1 · shares: Represents the sale of Common 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 of the aggregate number of shares. These shares were sold in multiple transactions in bulk at prices ranging from $39.3400 to $40.3300 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: 0002001011-25-000109 · edgardoc.xml · nonDerivative · entry 3

Spice Adam C. · CIK 0001509421 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,995,373

F1 · shares: Represents the sale of Common 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 of the aggregate number of shares. These shares were sold in multiple transactions in bulk at prices ranging from $41.3400 to $41.4200 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.

F3 · balance_after: Includes 111 shares acquired under the Rocket Lab Corporation 2021 Employee Stock Purchase Plan in transactions that were exempt under both Rule 16b-3(d) and Rule 16b-3(c).

SEC source: 0002001011-25-000109 · edgardoc.xml · nonDerivative · entry 2

Spice Adam C. · CIK 0001509421 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,995,630

F1 · shares: Represents the sale of Common 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 of the aggregate number of shares. These shares were sold in multiple transactions in bulk at prices ranging from $40.3400 to $41.3300 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.

F3 · balance_after: Includes 111 shares acquired under the Rocket Lab Corporation 2021 Employee Stock Purchase Plan in transactions that were exempt under both Rule 16b-3(d) and Rule 16b-3(c).

SEC source: 0002001011-25-000109 · edgardoc.xml · nonDerivative · entry 1

Spice Adam C. · CIK 0001509421 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,042,367

F1 · shares: Represents the sale of Common 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 of the aggregate number of shares. These shares were sold in multiple transactions in bulk at prices ranging from $39.3400 to $40.3300 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.

F3 · balance_after: Includes 111 shares acquired under the Rocket Lab Corporation 2021 Employee Stock Purchase Plan in transactions that were exempt under both Rule 16b-3(d) and Rule 16b-3(c).

SEC source: 0002001011-25-000101 · edgardoc.xml · nonDerivative · entry 1

Olson Jon A · CIK 0001331263 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 375,835

F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $45 to $45.110, 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: 0002001011-25-000106 · edgardoc.xml · nonDerivative · entry 1

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 921,799

F1 · shares: Represents restricted stock units ("RSUs") granted to Peter Beck under the Rocket Lab Corporation 2021 Stock Option and Incentive Plan. Such RSUs will vest as follows: 1/16 of the RSUs will vest on November 22nd, 2025 and 1/16 of the RSUs will vest on each March 1st, May 22nd, August 22nd or November 22nd thereafter, in each case subject to Peter Beck's continuous service through each applicable vesting date.

SEC source: 0002001011-25-000080 · edgardoc.xml · nonDerivative · entry 3

Spice Adam C. · CIK 0001509421 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,057,889

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction, with shares sold to cover the exercise price and satisfy applicable tax withholding obligations in connection with the exercise of stock options previously granted to the reporting person.

F3 · price: The price reported in column 4 is a weighted average price of the aggregate number of shares. These shares were sold in multiple transactions in bulk at prices ranging from $48.7100 to $48.9300, 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: 0002001011-25-000080 · edgardoc.xml · nonDerivative · entry 2

Spice Adam C. · CIK 0001509421 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,069,889

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction, with shares sold to cover the exercise price and satisfy applicable tax withholding obligations in connection with the exercise of stock options previously granted to the reporting person.

F2 · price: The price reported in column 4 is a weighted average price of the aggregate number of shares. These shares were sold in multiple transactions in bulk at prices ranging from $47.7100 to $48.7000, 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: 0002001011-25-000079 · edgardoc.xml · nonDerivative · entry 1

Slusky Alexander R · CIK 0001357262 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 88,849

F1 · shares: Represents a bona fide gift of shares to a charitable entity.