However, these statements involve risk and uncertainties, including those detailed in our earnings release, our annual report on Form 10-K, as amended, and other filings with the SEC. Reconciliations of GAAP to non-GAAP measures and certain additional information are included in our investor presentation and our earnings release. Tim Santo, our Senior Vice President and CFO, will review the quarterly financial performance in detail and provide our Fourth Quarter 2025 outlook, and then we will take any questions you may have. ADTRAN delivered solid third quarter results with revenue near the upper end of our guidance and higher operating margins.
All three business categories achieved double-digit year-over-year growth, reflecting disciplined execution, new customer wins, and healthy demand for fiber networking solutions. Operating profit exceeded the midpoint of our outlook, underscoring the solid execution and our focus on leveraging financial performance as a driver of longer-term value creation. Important steps that strengthen our capital structure and position us to execute confidently on longer-term strategic objectives. Turning to the quarter results, ADTRAN reported $279.4 million, reflecting strong year-over-year growth across all three revenue categories.
This marks the fifth consecutive quarter of sequential growth and fourth consecutive quarter of year-over-year improvement, proof points that our portfolio strategy and market positioning are driving sustainable momentum. This consistency underscores the health of our business, continued improvement in market conditions, and the progress we are making in strengthening our foundation for the longer-term growth. Our integrated portfolio means fewer handoffs, faster time to value, and one accountable partner across optical, access, subscriber, and software. Our optical networking solutions grew 47% year-over-year and 15% sequentially, driven by strong momentum in Europe, including deployments with a new large service provider.