Cybersecurity firm SentinelOne, known for its AI-powered protection, logged a notable insider buy following a year of negative returns.On Dec. 16, 2025, Mark S. Peek, a member of the Board of Directors of SentinelOne (S +0.82%), executed an open-market buy of 40,000 shares, totaling an approximate value of $595,600, as reported in the SEC Form 4 filing.Transaction summaryMetricValueShares traded40,000Transaction value~$595,600Post-transaction shares (direct)43,501Post-transaction shares (indirect)120,000Pos ...