This 8-K reports the closing of Rocket Lab's acquisition of the parent holding company of GEOST LLC under Items 7.01 and 8.01. The transaction, previously announced, was completed on August 12, 2025, by wholly-owned subsidiary Rocket Lab USA, Inc., involving $125 million cash payment and issuance of 3,057,588 shares of RKLB common stock as closing consideration. A contingent earnout of up to $50 million in cash is possible based on post-closing revenue milestones for GEOST's business. Concurrently, Rocket Lab filed an SEC prospectus supplement under its S-3ASR registration statement to cover resale of these shares by the selling stockholder, including a legal opinion from Goodwin Procter LLP. A press release was issued (Exhibit 99.1), though details on GEOST's operations are not elaborated in the filing itself. This event classifies as an Acquisition completion.

Near-term, the $125M cash outflow impacts liquidity but is manageable for Rocket Lab's balance sheet; stock issuance causes minor dilution (~0.6% based on ~500M shares outstanding). Strategically, acquiring GEOST enhances Rocket Lab's space systems portfolio, supporting vertical integration and revenue diversification beyond launches. Investors should monitor integration success, earnout achievement, and Q3 financials for acquisition effects; positive for long-term growth in national security and geospatial markets.