RKLB

SEC source: 0002001011-26-000109 · edgardoc.xml · nonDerivative · entry 6

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 4,118,162

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 March 27, 2026.

F8 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $97.2900 to $98.2800. 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: Held directly by the Equatorial Trust (the "Trust"), a family trust settled by the Reporting Person and Kerryn Beck. Peek Street Equatorial Trustee Limited (the "Trustee") is the trustee of the Trust and each of the Reporting Person, 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 the reported securities. The Reporting Person disclaims his beneficial ownership of the reported securities except to the extent of his pecuniary interest.

SEC source: 0002001011-26-000109 · edgardoc.xml · nonDerivative · entry 5

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 4,195,846

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 March 27, 2026.

F7 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $96.2950 to $97.2850. 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: Held directly by the Equatorial Trust (the "Trust"), a family trust settled by the Reporting Person and Kerryn Beck. Peek Street Equatorial Trustee Limited (the "Trustee") is the trustee of the Trust and each of the Reporting Person, 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 the reported securities. The Reporting Person disclaims his beneficial ownership of the reported securities except to the extent of his pecuniary interest.

SEC source: 0002001011-26-000109 · edgardoc.xml · nonDerivative · entry 4

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 4,365,303

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 March 27, 2026.

F6 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $95.3000 to $96.2900. 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.

F3 · ownership.nature: Held directly by the Equatorial Trust (the "Trust"), a family trust settled by the Reporting Person and Kerryn Beck. Peek Street Equatorial Trustee Limited (the "Trustee") is the trustee of the Trust and each of the Reporting Person, 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 the reported securities. The Reporting Person disclaims his beneficial ownership of the reported securities except to the extent of his pecuniary interest.

SEC source: 0002001011-26-000109 · edgardoc.xml · nonDerivative · entry 3

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 4,503,781

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 March 27, 2026.

F5 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $94.3000 to $95.2900. 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.

F3 · ownership.nature: Held directly by the Equatorial Trust (the "Trust"), a family trust settled by the Reporting Person and Kerryn Beck. Peek Street Equatorial Trustee Limited (the "Trustee") is the trustee of the Trust and each of the Reporting Person, 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 the reported securities. The Reporting Person disclaims his beneficial ownership of the reported securities except to the extent of his pecuniary interest.

SEC source: 0002001011-26-000109 · edgardoc.xml · nonDerivative · entry 2

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 4,588,168

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 March 27, 2026.

F4 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $93.3000 to $94.2900. 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.

F3 · ownership.nature: Held directly by the Equatorial Trust (the "Trust"), a family trust settled by the Reporting Person and Kerryn Beck. Peek Street Equatorial Trustee Limited (the "Trustee") is the trustee of the Trust and each of the Reporting Person, 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 the reported securities. The Reporting Person disclaims his beneficial ownership of the reported securities except to the extent of his pecuniary interest.

SEC source: 0002001011-26-000109 · edgardoc.xml · nonDerivative · entry 1

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 4,786,894

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 March 27, 2026.

F2 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $92.3000 to $93.2900. 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.

F3 · ownership.nature: Held directly by the Equatorial Trust (the "Trust"), a family trust settled by the Reporting Person and Kerryn Beck. Peek Street Equatorial Trustee Limited (the "Trustee") is the trustee of the Trust and each of the Reporting Person, 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 the reported securities. The Reporting Person disclaims his beneficial ownership of the reported securities except to the extent of his pecuniary interest.

SEC source: 0002001011-26-000105 · edgardoc.xml · nonDerivative · entry 1

Kampani Arjun · CIK 0001671507 · SVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 264,705

F1 · kind: On June 18, 2026, pursuant to a subscription agreement dated March 25, 2026, the Reporting Person contributed 88,000 shares at $107.98 per share to an exchange fund in exchange for fund shares.

SEC source: 0002001011-26-000093 · edgardoc.xml · nonDerivative · entry 1

Ricupati Agostino · CIK 0001710066 · VP Corp Controller & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,532

F1 · shares: Represents restricted stock units (RSUs) granted to the Reporting Person 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 August 22, 2026 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 the Reporting Person's continuous service through each applicable vesting date.

SEC source: 0002001011-26-000094 · edgardoc.xml · nonDerivative · entry 1

Spice Adam C. · CIK 0001509421 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,195,644

F1 · shares: Represents restricted stock units (RSUs) granted to the Reporting Person 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 August 22, 2026 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 the Reporting Person's continuous service as an employee through each applicable vesting date.

SEC source: 0002001011-26-000095 · edgardoc.xml · nonDerivative · entry 1

Slusky Alexander R · CIK 0001357262 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Abalone Cove LLLP

Disclosed balance after: 334,675

F1 · ownership.nature: These shares are held by Abalone Cove LLLP, a limited liability limited partnership, of which the Reporting Person is the sole general partner and of which the Reporting Person and his spouse are the sole limited partners.

SEC source: 0002001011-26-000085 · edgardoc.xml · nonDerivative · entry 3

Spice Adam C. · CIK 0001509421 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trusts

Disclosed balance after: 0

F2 · ownership.nature: Held by the Trusts of which the Reporting Person is a trustee.

SEC source: 0002001011-26-000085 · edgardoc.xml · nonDerivative · entry 2

Spice Adam C. · CIK 0001509421 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trusts

Disclosed balance after: 62,724

F1 · kind: On May 29, 2026, the Reporting Person transferred 62,724 shares of the Registrant's common stock to trusts (the "Trusts") of which the Reporting Person is a trustee.

F2 · ownership.nature: Held by the Trusts of which the Reporting Person is a trustee.

SEC source: 0002001011-26-000085 · edgardoc.xml · nonDerivative · entry 1

Spice Adam C. · CIK 0001509421 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 920,325

F1 · kind: On May 29, 2026, the Reporting Person transferred 62,724 shares of the Registrant's common stock to trusts (the "Trusts") of which the Reporting Person is a trustee.

SEC source: 0002001011-26-000084 · edgardoc.xml · nonDerivative · entry 2

Frank Edward H. · CIK 0001589827 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 91,373

F1 · ownership.nature: On May 29, 2026, the Reporting Person transferred 91,373 shares of the Registrant's common stock to a family trust of which the Reporting Person is a trustee and members of his immediate family are beneficiaries.

SEC source: 0002001011-26-000084 · edgardoc.xml · nonDerivative · entry 1

Frank Edward H. · CIK 0001589827 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,613

F1 · kind: On May 29, 2026, the Reporting Person transferred 91,373 shares of the Registrant's common stock to a family trust of which the Reporting Person is a trustee and members of his immediate family are beneficiaries.

SEC source: 0002001011-26-000081 · edgardoc.xml · nonDerivative · entry 8

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,006,987

F1 · shares: Represents the sale of shares which occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on 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 $149.7600 to $150.4500. 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: 0002001011-26-000081 · edgardoc.xml · nonDerivative · entry 7

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,008,396

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 $148.6400 to $149.6300. 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: 0002001011-26-000081 · edgardoc.xml · nonDerivative · entry 6

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,016,244

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 $147.6300 to $148.6100. 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: 0002001011-26-000081 · edgardoc.xml · nonDerivative · entry 5

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,024,938

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 $146.6300 to $147.6200. 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: 0002001011-26-000081 · edgardoc.xml · nonDerivative · entry 4

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,034,847

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 $145.6200 to $146.5900. 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: 0002001011-26-000081 · edgardoc.xml · nonDerivative · entry 3

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,038,847

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 $144.6200 to $145.6000. 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: 0002001011-26-000081 · edgardoc.xml · nonDerivative · entry 2

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,040,447

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 $143.5900 to $144.5800. 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: 0002001011-26-000081 · edgardoc.xml · nonDerivative · entry 1

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,043,147

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 $142.5900 to $143.4600. 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: 0002001011-26-000079 · edgardoc.xml · nonDerivative · entry 8

Kampani Arjun · CIK 0001671507 · SVP & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 352,705

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 $150.1000 to $150.4200. 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: 0002001011-26-000079 · edgardoc.xml · nonDerivative · entry 7

Kampani Arjun · CIK 0001671507 · SVP & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 352,905

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 $149.0100 to $149.9400. 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: 0002001011-26-000079 · edgardoc.xml · nonDerivative · entry 6

Kampani Arjun · CIK 0001671507 · SVP & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 356,005

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 $148.0100 to $149.0000. 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: 0002001011-26-000079 · edgardoc.xml · nonDerivative · entry 5

Kampani Arjun · CIK 0001671507 · SVP & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 362,011

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 $147.0100 to $148.0000. 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: 0002001011-26-000079 · edgardoc.xml · nonDerivative · entry 4

Kampani Arjun · CIK 0001671507 · SVP & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 368,709

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 $145.9900 to $146.9800. 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: 0002001011-26-000079 · edgardoc.xml · nonDerivative · entry 3

Kampani Arjun · CIK 0001671507 · SVP & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 373,019

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 $144.9300 to $145.8300. 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: 0002001011-26-000079 · edgardoc.xml · nonDerivative · entry 2

Kampani Arjun · CIK 0001671507 · SVP & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 374,109

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 $143.9300 to $144.7100. 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: 0002001011-26-000079 · edgardoc.xml · nonDerivative · entry 1

Kampani Arjun · CIK 0001671507 · SVP & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 376,009

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 $142.7600 to $143.6600. 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: 0002001011-26-000082 · edgardoc.xml · nonDerivative · entry 2

Slusky Alexander R · CIK 0001357262 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Abalone Cove LLLP

Disclosed balance after: 374,675

F2 · ownership.nature: These shares are held by Abalone Cove LLLP, a limited liability limited partnership, of which the Reporting Person is the sole general partner and of which the Reporting Person and his spouse are the sole limited partners.

SEC source: 0002001011-26-000082 · edgardoc.xml · nonDerivative · entry 1

Slusky Alexander R · CIK 0001357262 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Abalone Cove LLLP

Disclosed balance after: 394,675

F1 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $149.0000 to $149.4100. 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.

F2 · ownership.nature: These shares are held by Abalone Cove LLLP, a limited liability limited partnership, of which the Reporting Person is the sole general partner and of which the Reporting Person and his spouse are the sole limited partners.

SEC source: 0002001011-26-000080 · edgardoc.xml · nonDerivative · entry 1

Clevenger Marvin Bradford · CIK 0002127567 · President, Rocket Lab USA, Inc

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 473,975

F1 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $146.6000 to $146.7800. 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: 0002001011-26-000073 · edgardoc.xml · nonDerivative · entry 8

Kampani Arjun · CIK 0001671507 · SVP & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 376,509

SEC source: 0002001011-26-000073 · edgardoc.xml · nonDerivative · entry 7

Kampani Arjun · CIK 0001671507 · SVP & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 385,609

F8 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $144.1000 to $144.7050. 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: 0002001011-26-000074 · edgardoc.xml · nonDerivative · entry 6

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,043,847

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction pursuant to a Rule 10b5-1 election adopted by the Reporting Person 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.

F7 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $143.8500 to $144.7600. 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: 0002001011-26-000074 · edgardoc.xml · nonDerivative · entry 5

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,049,036

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction pursuant to a Rule 10b5-1 election adopted by the Reporting Person 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 $142.8400 to $143.8300. 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: 0002001011-26-000074 · edgardoc.xml · nonDerivative · entry 4

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,066,324

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction pursuant to a Rule 10b5-1 election adopted by the Reporting Person 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 $141.8300 to $142.8300. 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: 0002001011-26-000074 · edgardoc.xml · nonDerivative · entry 3

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,079,239

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction pursuant to a Rule 10b5-1 election adopted by the Reporting Person 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 $140.8200 to $141.8200. 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: 0002001011-26-000074 · edgardoc.xml · nonDerivative · entry 2

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,083,575

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction pursuant to a Rule 10b5-1 election adopted by the Reporting Person 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 $139.8000 to $140.8000. 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: 0002001011-26-000074 · edgardoc.xml · nonDerivative · entry 1

Klein Frank · CIK 0002037530 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,087,065

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction pursuant to a Rule 10b5-1 election adopted by the Reporting Person 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 $138.7700 to $139.7600. 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: 0002001011-26-000076 · edgardoc.xml · derivative · entry 3

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 40,951,250

Underlying: Common Stock · 5,000,000 shares

Expires not disclosed

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.

F2 · derivative.exercise_price: Each share of Series A Convertible Participating Preferred Stock, $0.0001 par value per share ("Series A Preferred Stock"), is convertible into one share of common stock, par value $0.0001 per share ("Common Stock") of the Registrant at any time at the option of the holder, subject to certain adjustments such as in connection with stock dividends, distributions, stock splits and stock combinations.

F3 · kind: On May 26, 2026, the Trust optionally converted 5,000,000 shares of Series A Preferred Stock into 5,000,000 shares of Common Stock pursuant to the terms of the Series A Preferred Stock Certificate of Designation. The Trust converted the shares for purposes of satisfying delivery of shares of Common Stock to the broker for sales to be made in future months under a Rule 10b5-1 Plan adopted by the Trust on March 27, 2026.

F3 · shares: On May 26, 2026, the Trust optionally converted 5,000,000 shares of Series A Preferred Stock into 5,000,000 shares of Common Stock pursuant to the terms of the Series A Preferred Stock Certificate of Designation. The Trust converted the shares for purposes of satisfying delivery of shares of Common Stock to the broker for sales to be made in future months under a Rule 10b5-1 Plan adopted by the Trust on March 27, 2026.

F4 · derivative.exercise_date: Each share of Series A Preferred Stock will automatically convert into one share of Common Stock, upon the earliest to occur of (a) any sale, assignment, transfer, conveyance, hypothecation or other transfer or disposition of such share of Series A Preferred Stock, except for certain permitted transfers described in the Registrant's amended and restated certificate of incorporation, as amended; (b) the first date on which the Reporting Person shall no longer serve as the Chief Executive Officer or such other executive officer position of the Registrant as approved by its Board of Directors; (c) the death or permanent disability of the Reporting Person; or (d) the first date on which the outstanding shares of Series A Preferred Stock no longer represent at least 5% of the beneficial ownership of the Registrant's outstanding Common Stock.

F4 · derivative.expiration_date: Each share of Series A Preferred Stock will automatically convert into one share of Common Stock, upon the earliest to occur of (a) any sale, assignment, transfer, conveyance, hypothecation or other transfer or disposition of such share of Series A Preferred Stock, except for certain permitted transfers described in the Registrant's amended and restated certificate of incorporation, as amended; (b) the first date on which the Reporting Person shall no longer serve as the Chief Executive Officer or such other executive officer position of the Registrant as approved by its Board of Directors; (c) the death or permanent disability of the Reporting Person; or (d) the first date on which the outstanding shares of Series A Preferred Stock no longer represent at least 5% of the beneficial ownership of the Registrant's outstanding Common Stock.

F1 · ownership.nature: Held directly by the Equatorial Trust (the "Trust"), a family trust settled by the Reporting Person and Kerryn Beck. Peek Street Equatorial Trustee Limited (the "Trustee") is the trustee of the Trust and each of the Reporting Person, 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 the reported securities. The Reporting Person disclaims his beneficial ownership of the reported securities except to the extent of his pecuniary interest.

SEC source: 0002001011-26-000076 · edgardoc.xml · nonDerivative · entry 1

Beck Peter · CIK 0001881842 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 5,000,000

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.

F1 · ownership.nature: Held directly by the Equatorial Trust (the "Trust"), a family trust settled by the Reporting Person and Kerryn Beck. Peek Street Equatorial Trustee Limited (the "Trustee") is the trustee of the Trust and each of the Reporting Person, 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 the reported securities. The Reporting Person disclaims his beneficial ownership of the reported securities except to the extent of his pecuniary interest.

SEC source: 0002001011-26-000073 · edgardoc.xml · nonDerivative · entry 6

Kampani Arjun · CIK 0001671507 · SVP & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 446,509

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction pursuant to a Rule 10b5-1 election adopted by the Reporting Person 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.

F7 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $143.8500 to $144.7600. 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: 0002001011-26-000073 · edgardoc.xml · nonDerivative · entry 5

Kampani Arjun · CIK 0001671507 · SVP & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 449,860

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction pursuant to a Rule 10b5-1 election adopted by the Reporting Person 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 $142.8400 to $143.8300. 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: 0002001011-26-000073 · edgardoc.xml · nonDerivative · entry 4

Kampani Arjun · CIK 0001671507 · SVP & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 461,025

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction pursuant to a Rule 10b5-1 election adopted by the Reporting Person 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 $141.8300 to $142.8300. 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: 0002001011-26-000073 · edgardoc.xml · nonDerivative · entry 3

Kampani Arjun · CIK 0001671507 · SVP & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 469,366

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction pursuant to a Rule 10b5-1 election adopted by the Reporting Person 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 $140.8200 to $141.8200. 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: 0002001011-26-000073 · edgardoc.xml · nonDerivative · entry 2

Kampani Arjun · CIK 0001671507 · SVP & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 472,166

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction pursuant to a Rule 10b5-1 election adopted by the Reporting Person 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 $139.8000 to $140.8000. 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: 0002001011-26-000073 · edgardoc.xml · nonDerivative · entry 1

Kampani Arjun · CIK 0001671507 · SVP & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 474,420

F1 · shares: Represents the sale of shares pursuant to a "sell-to-cover" transaction pursuant to a Rule 10b5-1 election adopted by the Reporting Person 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 $138.7700 to $139.7600. 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.