Form 144 is a notice of proposed sale of restricted securities under Rule 144 by Rocket Lab Corporation officer Arjun Kampani (CIK 0001671507). He plans to sell 5,194 common shares through Morgan Stanley on or around June 9, 2025, at an aggregate market value of $150,210.48, based on ~461M shares outstanding. These shares were acquired from issuer-granted Restricted Stock Units vesting on May 22, 2025. The transaction relies on a pre-established Rule 10b5-1 trading plan adopted December 12, 2024, which Kampani certifies had no material adverse non-public information at adoption. Past three months' sales by Kampani include: June 2 (5,194 shares, $137,732), May 30 (28,988 shares, $772,844), May 28 (5,277 shares, $158,152), March 17 (5,277 shares, $102,124), and March 14 (28,836 shares, $524,276), all under 10b5-1 except two. This reflects routine vesting and diversification by an insider at Rocket Lab, a space launch provider.

This is standard, pre-planned insider selling under 10b5-1, signaling routine diversification rather than distress, with certification of no adverse info. Near-term stock pressure minimal given small volume (~0.001% of outstanding shares). Investors should monitor aggregate insider activity and RKLB's launch cadence/Neutron progress for context; no strategic shift indicated.