Perimeter Acquisition Corp. I operates as a blank check entity, established with the singular objective of pursuing a merger, asset acquisition, share exchange, or comparable business combination with one or more suitable companies. Formed in March 2025, this special purpose acquisition company focuses its search on enterprises within the defense and national security sectors, also considering technology firms at the intersection of these critical areas. Having completed its initial public offering in May 2025, the company maintains its executive offices in Dallas, Texas.