Exhibit 99.1 PennyMac Financial Services, Inc. Reports First Quarter 2026 Results WESTLAKE VILLAGE, Calif. – May 5, 2026 – PennyMac Financial Services, Inc. (NYSE: PFSI) today reported net income of $82.3 million for the first quarter of 2026, or $1.53 per share on a diluted basis, on total net revenues of $545.0 million. Adjusted net income was $117.7 million and adjusted earnings per share (EPS) was $2.19. Book value per share increased to $83.31 from $82.77 at December 31, 2025. PFSI's Board of Directors ...