Exhibit 99.1 FOR IMMEDIATE RELEASE Harmonic Announces First Quarter 2025 Results Broadband gross margins and profitability exceeded expectations Strong Video results with revenue and profitability surpassing high end of guidance Robust cash flow generation resulted in cash balance of $149 million at quarter end SAN JOSE, California, April 28, 2025 - Harmonic Inc. (NASDAQ: HLIT) today announced its unaudited results for the first quarter of 2025. "Our first quarter results reflect strong execution as we exce ...