Exhibit 99.1 GULF ISLAND REPORTS FIRST QUARTER 2024 RESULTS THE WOODLANDS, TX - Gulf Island Fabrication, Inc. (NASDAQ: GIFI) (“Gulf Island” or the “Company”), a leading steel fabricator and service provider to the industrial and energy sectors, today announced results for the first quarter 2024. FIRST QUARTER 2024 SUMMARY • Consolidated revenue of $42.9 million • Consolidated net income of$6.2 million; Adjusted EBITDA of $3.7 million • Services Division operating income of$2.9 million; EBITDA of $3.3 mill ...