Exhibit 99.1 Kellanova Financial News Release Analyst Contact: John Renwick, CFA (269) 961-9050 Media Contact: Kris Bahner, (269) 961-3799 Kellanova Reports Second Quarter Results Chicago, Ill. – July 31, 2025 – Kellanova (NYSE: K) today announced results for its second quarter of 2025. Pending Transaction: As announced on August 14, 2024, Mars, Incorporated, a family-owned, global leader in pet care, snacking, and food, and Kellanova, a leading company in global snacking, international cereal and noodles, ...