Exhibit 99.1 SEAPORT ENTERTAINMENT GROUP REPORTS FIRST QUARTER 2025 RESULTS NEW YORK, NY, May 12, 2025 – Seaport Entertainment Group Inc. (NYSE American: SEG) ("Seaport Entertainment Group," "SEG", "we," "our," or the "Company") announced today its operating and financial results for the quarter ended March 31, 2025. Select First Quarter 2025 Results ◾ Net Loss of ($31.9) million, or ($2.51) per basic and diluted share attributable to common stockholders. ◾ Non-GAAP Adjusted Net Loss Attributable to Common ...