Exhibit 99.1 News Release For Immediate Release Sallie Mae Reports First-Quarter 2025 Financial Results and Reaffirms Full-Year 2025 Guidance NEWARK, Del., April 24, 2025 - Sallie Mae (Nasdaq: SLM), formally SLM Corporation, today released first-quarter 2025 financial results and reaffirmed full-year 2025 guidance. Complete financial results and related materials are available at www.SallieMae.com/investors. The materials will also be available on the Securities and Exchange Commission's website at www.sec. ...