Shares of Tenable Holdings Inc. (NASDAQ: TENB) surged 7.29% in after-hours trading on Wednesday, following the release of its second-quarter earnings report that exceeded analyst expectations. The cybersecurity firm demonstrated robust growth and announced an expansion of its stock repurchase program, boosting investor confidence.

Tenable reported Q2 revenue of $247.3 million, beating the consensus estimate of $242.1 million and marking a 12% year-over-year increase. The company's adjusted earnings per share came in at $0.34, surpassing the expected $0.30. This strong performance was driven by the growing adoption of Tenable's exposure management platform, with non-GAAP operating margins reaching 19%.

Adding to the positive sentiment, Tenable expanded its stock repurchase program by $250 million. The company also provided an optimistic outlook for Q3 and full-year 2025, forecasting Q3 revenue between $246 million and $248 million, and full-year revenue between $981 million and $987 million. Co-CEO Mark Thurmond highlighted major expansions and wins against competitors, underscoring the value of Tenable One in the cybersecurity market. As companies prioritize strategic security investments, Tenable's unified approach to attack surface management appears to be resonating with customers, potentially driving future growth and explaining the enthusiastic after-hours response from investors.