This Form 144 filing notifies the SEC of an affiliate's (CEO Peter Beck) proposed sale of restricted securities under Rule 144, allowing non-registered resale after holding periods. Beck, Rocket Lab's founder and CEO, plans to sell 2.5 million Class A common shares (0.47% of 534M outstanding) through Goldman Sachs, with market value $138.5M based on ~$55.41/share. Shares originated from preferred stock conversion in the August 2021 SPAC merger with Vector Acquisition Corp. Sales are pursuant to a pre-arranged June 13, 2025, Rule 10b5-1(c) plan by Equatorial Trust (Beck-related entity), which sold 1.06M shares on 9/15/2025 ($57.4M) and 1.44M on 9/16/2025 ($70M). Beck certifies no undisclosed material adverse info as of plan adoption. For Rocket Lab, a space launch/ satellite firm, this reflects executive diversification post-public, common in high-growth tech without signaling distress due to 10b5-1 safeguards.

For RKLB investors, this is routine CEO liquidity via pre-planned 10b5-1 sales (~5M shares in 3 months), unlikely signaling concerns given certification of no adverse info. Near-term, minimal dilution/price pressure (0.47% float); strategically, supports executive retention in capital-intensive space sector. Monitor future 144s, Form 4s, or Q4 earnings for sales pace, stock performance, and launch cadence.