Exhibit 99.1 FOR IMMEDIATE RELEASE Harmonic Announces Fourth Quarter and Fiscal 2025 Results Record quarterly Broadband bookings drove a 3.5 book-to-bill in Q4 Previously announced sale of Video business proceeding as anticipated SAN JOSE, California, February 19, 2026 - Harmonic Inc. (Nasdaq: HLIT) today announced its unaudited results for the fourth quarter and fiscal year ended December 31, 2025. "We ended the year with extremely strong quarterly bookings across our Broadband business," said Nimrod Ben-N ...