Cosan S.A. (CSAN) Insider Trading
Over the last 3 months, CSAN insiders made 0 open-market buys and 4 sales, a net sale of -$870K (SEC Form 4). Over the last 6 months, 49 institutions increased and 48 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
4
Net (3m)
-$869.9K
Context3-month price -34.2%Institutions mixed (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 26, 2026 | Mello Rubens Ometto Silveiradirector | Sell | 77,640 | $3.44 |
| May 21, 2026 | Drummond Maria Rita de Carvalhoofficer: Chief Legal Officer | Sell | 35,800 | $5.57 |
| May 21, 2026 | Drummond Maria Rita de Carvalhoofficer: Chief Legal Officer | Sell | 36,200 | $5.48 |
| May 21, 2026 | Drummond Maria Rita de Carvalhoofficer: Chief Legal Officer | Sell | 37,400 | $5.48 |
Source: CSAN SEC Form 4 filings, latest May 26, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their CSAN positions over the last 6 months (SEC Form 13F).
Increased
49
New positions
38
Reduced
48
Sold out
40
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 4.1M | Feb 12, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 3.8M | May 14, 2026 |
| UBS GROUP AG | Increased | 3.5M | Jan 29, 2026 |
| MONACO ASSET MANAGEMENT SAM | Increased | 3.3M | May 11, 2026 |
| MONACO ASSET MANAGEMENT SAM | Increased | 3.0M | Feb 10, 2026 |
| MARSHALL WACE, LLP | Increased | 2.4M | May 15, 2026 |
| Aquamarine Financial (Cayman) Ltd | New Position | 2.2M | Jan 12, 2026 |
| Aquamarine Financial (Cayman) Ltd | Reduced | 2.1M | Jan 28, 2026 |
| Aquamarine Financial (Cayman) Ltd | Unchanged | 2.1M | May 15, 2026 |
| MORGAN STANLEY | Increased | 1.3M | May 15, 2026 |
| MORGAN STANLEY | Reduced | 1.1M | Feb 13, 2026 |
| MARSHALL WACE, LLP | Increased | 869K | Feb 13, 2026 |
| UBS GROUP AG | Reduced | 863K | May 5, 2026 |
| BALYASNY ASSET MANAGEMENT L.P. | Increased | 777K | Feb 17, 2026 |
| JANE STREET GROUP, LLC | Increased | 597K | May 12, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.