Hill International, Inc., trading under the ticker APGO, filed an S-1 registration statement with the Securities and Exchange Commission on April 23, 2004, with accession number 0000950136-04-001262. The filing marks the company's initial public offering registration, positioning it within the construction management and project management services sector. Hill International operates as a global firm providing construction claims and project management solutions, placing its SPAC-era public markets activity within the infrastructure and professional services industry. The 2004 filing predates the modern SPAC boom but remains a reference point in the blank-check and special-purpose vehicle landscape tracked by SpacDesk. Sign up at SpacDesk for complete filing history, SEC document access, and real-time deal tracking on APGO and hundreds of other SPAC vehicles.