Cosan CEO Marcelo Martins acquired 4,040,614 shares totaling $23,820,131.87 in two purchases
Marcelo Eduardo Martins, as Chief Executive Officer of Cosan S.A., executed two separate share purchases totaling 4,040,614 shares for $23,820,131.87 at blended average price of $5.90. The first transaction on 2026-04-10 involved 1,599,086 shares at $7.05, followed by a larger acquisition on 2026-05-19 of 2,441,528 shares at $5.14—a notably lower price point six weeks later. This dual-tranche structure with the second purchase at a significantly reduced price, combined with the substantial dollar commitment from the CEO, reflects a material capital allocation decision by top company leadership. The post-transaction holdings of 2,353,314 shares represent a shift from negative prior holdings, establishing a direct positive stake in the company's performance.