Exhibit 99.1 Weight Watchers Announces Fourth Quarter and Full Year 2025 Results 2025 Total Revenue and Adjusted EBITDA1,2 above high end of previously provided guidance Total End of Period Subscribers of 2.8 million; End of Period Clinical Subscribers of 130 thousand, up 42% year-over-year with continued growth in first quarter 2026 Fourth Quarter Total Revenue of $163 million; Clinical Subscription Revenue of $27 million, up 32% year-over-year Fourth Quarter Net Loss of $6 million; Net Loss Margin of 3.6% ...