Vector Acquisition Corporation, trading under the ticker VACQ, was a blank-check company sponsored by Vector Capital, a technology-focused private equity firm, that completed its initial public offering in 2020 with a focus on the technology sector. In March 2021, the SPAC announced a definitive merger agreement with Rocket Lab USA, a commercial aerospace launch and space systems company. The 8-K filed May 12, 2021 represents a material event disclosure submitted during the pendency of that business combination. The transaction subsequently closed in August 2021, with Rocket Lab USA beginning to trade on Nasdaq under the ticker RKLB, marking VACQ's completed de-SPAC. Sign up for SpacDesk to access full filing timelines, deal analytics, and sponsor data across hundreds of SPAC transactions.