Top executives at several major public companies sold sizable chunks of their holdings last week, including Nvidia , Five Below and Dell Technologies . Insider selling can happen for a range of reasons, including diversification or accessing liquidity. The activity is often interpreted by investors as a potential bearish signal, and can influence other shareholders to also sell their holdings. CNBC Pro analyzed recent insider transactions, using financial research platform VerityData, focusing on discretionary sales disclosed through Securities and Exchange Commission filings. The dataset includes transaction dates, share prices and total shares sold, and excludes trades executed under prearranged 10b5-1 plans . Here are some of the most notable sales from last week. The percentage change for each stock is based on the specific date of transaction. ConocoPhillips ConocoPhillips EO Ryan Lance sold 506,800 shares at an average price of $127.26 for a total of $64.5 million. Shares were up 34% over the prior three months. Nvidia Director Mark Stevens sold 221,700 shares at an average price of $173.68 for a total of $38.5 million. Shares were up 1% over the prior three months. GitLab GitLab director Matthew Jacobson sold 1,159,900 shares at an average price of $22.72 for a total of $26.4 million. Shares were down 41% over the prior three months. Dell Technologies Chief Customer Officer William Scannell sold 143,100 shares at an average price of $165.00 for a total of $23.6 million. Verity notes cluster selling in which three insiders sold a total of $369 million over the prior 30 days. Shares were up 34% over the prior three months. Five Below Director Ronald Sargent sold 20,000 shares at an average price of $231.51 for a total of $4.6 million. Shares were up 27% over the prior three months. Ross Stores Ross Stores President Karen Sykes sold 5,500 shares at an average price of $213.40 for a total of $1.2 million. Verity noting cluster selling in which four insiders sold a total of $4.5 million of stock over the past 30 days. Shares were up 20% over the prior three months. In terms of last week's notable purchases, the CEO of Palo Alto Networks filed on Friday to purchase $10 million in the company's stock. CEO Nikesh Arora bought 68,085 shares at an average price of $146.88 for a total of $10 million. Shares of Palo Alto were down 21% over the prior three months.
