Marcelo Eduardo Martins bought $24M of CSANY
Chief Executive Officer at Cosan S.A.. 4,040,614 shares at an average of $5.90, traded Apr 10, 2026, filed May 21, 2026.
Score components
- +25RoleCEO
- +25Trade size$23.8M at market
- +10Relative to holdingsHoldings up 266%
- +4Price context28% below the 52-week high
- 0ClusterNo other insider buying within 14 days
- 0Repeat buyingFirst buy in 90 days
- 0Track recordToo few past buys to judge (0 with prices)
What happened after comparable buys
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001292814-26-003161, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Apr 10, 2026 | POpen-market purchase COMMON STOCK (BVMF: CSAN3) | +1,599,086 | $7.05 | $11M | 3,120,178 | May 21, 2026 |
| May 19, 2026 | POpen-market purchase COMMON STOCK (BVMF: CSAN3) | +2,441,528 | $5.14 | $13M | 4,890,286 | May 21, 2026 |
| Apr 10, 2026 | JOther LONG TERM INCENTIVE (BVMF: CSAN3) | -1,552,511 | $7.05 | $11M | 4,794,842 | May 21, 2026 |
| May 19, 2026 | JOther LONG TERM INCENTIVE (BVMF: CSAN3) | -2,441,528 | $5.14 | $13M | 2,353,314 | May 21, 2026 |
Related signals
Other insiders at Cosan S.A. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 39Weak | CSANYbuy Cosan S.A. | Burkhard Otto Cordes director | $696k 159,000 shares | +12% | |
| 48Moderate | CSANYsell Cosan S.A. | Rubens Ometto Silveira Mello director | $267k 77,640 shares | -100% | |
| 34Weak | CSANYsell Cosan S.A. | Maria Rita de Carvalho Drummond Chief Legal Officer | $603k 109,400 shares | -5% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.