Exhibit 99.1 News Release RAMBUS REPORTS SECOND QUARTER 2025 FINANCIAL RESULTS SAN JOSE, Calif. – July 28, 2025 – Rambus Inc. (NASDAQ:RMBS), a provider of industry-leading chips and IP making data faster and safer, today reported financial results for the second quarter ended June 30, 2025. GAAP revenue for the second quarter was $172.2 million, licensing billings were$66.4 million, product revenue was $81.3 million, and contract and other revenue was$22.3 million. The Company also generated $94.4 million ...