Exhibit 99.1 Argan, Inc. Reports First Quarter Fiscal 2025 Results June 6, 2024 – ROCKVILLE, MD – Argan, Inc. (NYSE: AGX) (“Argan” or the “Company”) today announces financial results for its first quarter of fiscal year 2025 ended April 30, 2024. The Company will host an investor conference call today, June 6, 2024, at 5:00 p.m. ET. Consolidated Financial Highlights ($ in thousands, except per share data) April 30, For the Quarter Ended: 2024 2023 Change Revenues $157,682 $103,675 $54,007 Gross profit 17,94 ...