CSX’s top finance executive, EVP & CFO Kevin S. Boone, sold 136,708 shares in the open market on June 3, 2026 at $46.70 per share, totaling about $6.38 million. For retail investors, open-market selling by a CFO can draw attention because the CFO is typically close to the company’s financial performance, cash flow, and internal forecasts, even though sales can also be driven by personal planning, taxes, or diversification. The sale also occurred the same day as a smaller open-market sale by director John J. Zillmer, who sold 10,000 shares for roughly $464,500. Multiple insiders selling around the same time can be more notable than an isolated transaction because it suggests the activity isn’t limited to one individual’s circumstances, though it still doesn’t identify a specific motive on its own. Looking at the last 30 days, the reported insider activity at CSX is entirely selling, led by Boone’s much larger transaction. That recent tilt toward sales contrasts with the “mixed” activity earlier in the year mentioned in the alert, which included purchases and other non-open-market transactions, making this early-June cluster a clear shift in near-term insider behavior.