Cosan S.A. (CSAN) has 6 known insider and institutional holders on record. The largest holder is Rosenberg Whitaker Carneiro Ralph Gustavo with 4,251,582 shares. Other notable holders include Martins Marcelo Eduardo and Drummond Maria Rita de Carvalho.
Over the last 12 months, insiders have made 9 transactions in CSAN stock — 0 buys (valued at RSU Award) and 0 sells (valued at RSU Award).
CSAN Insider Ownership
Top Holder
Rosenberg Whitaker Carneiro Ralph Gustavo
4,251,582 shares
Buys (12 mo)
0
$0.00 value
Sells (12 mo)
0
$0.00 value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Rosenberg Whitaker Carneiro Ralph Gustavo |
Director |
4,251,582 |
2026-03-18 |
|
| 2 |
Martins Marcelo Eduardo |
Chief Executive Officer |
1,613,666 |
2026-03-31 |
|
| 3 |
Drummond Maria Rita De Carvalho |
Chief Legal Officer |
672,888 |
2026-03-18 |
|
| 4 |
Mello Rubens Ometto Silveira |
Director |
77,640 |
2026-03-24 |
|
| 5 |
Bergman Rafael |
Chief Finance Officer |
55,242 |
2026-03-18 |
|
| 6 |
Cordes Burkhard Otto |
Director |
42,332 |
2026-04-02 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-18 |
Cordes Burkhard Otto |
Director |
Unknown |
- |
- |
- |
| 2026-03-18 |
Martins Marcelo Eduardo |
Chief Executive Officer |
Unknown |
- |
- |
- |
| 2026-03-18 |
Mazzola Renato Antonio Secondo |
Director |
Unknown |
- |
- |
- |
| 2026-03-18 |
Mello Rubens Ometto Silveira |
Director |
Unknown |
- |
- |
- |
| 2026-03-18 |
Cruz Simon Flavia |
Director |
Unknown |
- |
- |
- |
| 2026-03-18 |
Bergman Rafael |
Chief Finance Officer |
Unknown |
- |
- |
- |
| 2026-03-18 |
Drummond Maria Rita De Carvalho |
Chief Legal Officer |
Unknown |
- |
- |
- |
| 2026-03-18 |
Rapparini Soares Luis Claudio |
Director |
Unknown |
- |
- |
- |
| 2026-03-18 |
Rosenberg Whitaker Carneiro Ralph Gustavo |
Director |
Unknown |
- |
- |
- |
