Exhibit 99.1 NEWARK, Del., Oct. 23, 2025 — Sallie Mae (Nasdaq: SLM), formally SLM Corporation, today released third quarter 2025 financial results. 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.gov. Sallie Mae will host an earnings conference call today, Oct. 23, 2025, at 5:30 p.m. ET. Executives will be on hand to discuss various highlights of the quarter and ...