Harbor Acquisition Corp. (SEC CIK 0001331945) is a blank check company formed as a special purpose acquisition vehicle during the mid-2000s wave of SPAC activity, with its initial public offering occurring prior to its November 2007 SEC filings. On November 6, 2007, the company filed a Form PRER14A — a preliminary proxy statement amendment — indicating that Harbor was advancing toward a shareholder vote on a proposed business combination. This filing type precedes the definitive proxy statement and is a standard procedural step as a SPAC moves closer to completing a merger. Harbor Acquisition Corp. represents an early cohort of modern SPACs, operating well before the format's high-volume resurgence of 2020 and 2021. Sign up at SpacDesk for full filing history, sponsor details, and deal-level analytics on Harbor Acquisition Corp. and the broader SPAC universe.