Nina Armagno - 19 Dec 2025 Form 4 Insider Report for Rocket Lab Corp (RKLB)

Role
Director
Signature
By: /s/ Arjun Kampani, as Attorney-in-Fact For: Nina Armagno
Issuer symbol
RKLB
Transactions as of
19 Dec 2025
Net transactions value
-$1,862,972
Form type
4
Filing time
23 Dec 2025, 18:03:11 UTC
Previous filing
29 Aug 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Armagno Nina Director 3881 MCGOWEN STREET, LONG BEACH By: /s/ Arjun Kampani, as Attorney-in-Fact For: Nina Armagno 23 Dec 2025 0001991365

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction RKLB Common Stock Sale $12,197 -200 -0.15% $60.98 136,054 19 Dec 2025 Direct F1, F2
transaction RKLB Common Stock Sale $75,316 -1,200 -0.88% $62.76 134,854 19 Dec 2025 Direct F1, F3
transaction RKLB Common Stock Sale $76,210 -1,200 -0.89% $63.51 133,654 19 Dec 2025 Direct F1, F4
transaction RKLB Common Stock Sale $174,830 -2,700 -2% $64.75 130,954 19 Dec 2025 Direct F1, F5
transaction RKLB Common Stock Sale $177,291 -2,700 -2.1% $65.66 128,254 19 Dec 2025 Direct F1, F6
transaction RKLB Common Stock Sale $33,376 -500 -0.39% $66.75 127,754 19 Dec 2025 Direct F1, F7
transaction RKLB Common Stock Sale $130,224 -1,906 -1.5% $68.32 125,848 19 Dec 2025 Direct F1, F8
transaction RKLB Common Stock Sale $310,103 -4,462 -3.5% $69.50 121,386 19 Dec 2025 Direct F1, F9
transaction RKLB Common Stock Sale $873,425 -12,446 -10% $70.18 108,940 19 Dec 2025 Direct F1, F10
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 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 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.
F3 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.
F4 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.
F5 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.
F6 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.
F7 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.
F8 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.
F9 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.
F10 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.