Exhibit 99.1 Chord Energy Reports First Quarter 2026 Financial and Operating Results, Updates 2026 Outlook and Declares Base Dividend Houston, Texas — May 5, 2026 — Chord Energy Corporation (NASDAQ: CHRD) ("Chord," "Chord Energy," or the "Company") today reported financial and operating results for the first quarter 2026. Key Takeaways and Updates: 1Q26 Operational and Financial Highlights: The following table presents select 1Q26 operational and financial data compared to guidance released on February 25, ...