Fortinet Inc. (FTNT) shares surged 11.73% in after-hours trading on Thursday, following the company's impressive fourth-quarter earnings report and optimistic guidance for the full year 2025. The cybersecurity firm's strong performance and positive outlook fueled investor confidence, driving the stock's significant rally in the extended trading session.

According to the earnings release, Fortinet reported Q4 non-GAAP earnings of $0.74 per share, surpassing the consensus estimate of $0.61 by a wide margin. The company's revenue for the quarter came in at $1.66 billion, exceeding analysts' expectations of $1.59 billion. These stellar results showcased Fortinet's robust growth and resilient business model, underpinned by robust demand for its cybersecurity solutions.

Furthermore, Fortinet provided an upbeat outlook for the full year 2025, projecting non-GAAP earnings per share between $2.41 and $2.47 on revenue ranging from $6.65 billion to $6.85 billion. These forecasts exceeded Wall Street's consensus estimates, signaling the company's confidence in sustaining its momentum amid the evolving cybersecurity landscape.