Cosan CSAN Insider Ownership

NYSE CSAN
$2.91 -0.08 (-2.68%)
At close: Sep 2, 2026 · 4:00 PM EDT

Insider Holdings by Owner

9.88Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
share count not reported for this filer set
Shares Held by Insiders
9.88Mn
filed for Sep 2026
-1.08% QoQ
Shares Outstanding
not reported
Direct Holdings
9.88Mn
Indirect: 0
Net Shares Traded (QoQ)
-107.74K
net selling in Sep 2026
Insiders Holding Shares
2
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest
Average ownership
Peak ownership

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter
Net over range
Buying quarters

Insider Ownership Summary

Quarter ending 30 Sep, 2026

As of August 29, 2026, the three largest insider holders of CSAN are Marcelo Eduardo Martins (Chief Executive Officer, 5.09Mn shares), Maria Rita De Carvalho Drummond (Chief Legal Officer, 2.41Mn shares), Marcelo Eduardo Martins (Chief Executive Officer, 2.07Mn shares).

Form 4 Holdings

Insiders Holding CSAN

Insiders 2
Shares held 9.88Mn
Of outstanding
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Marcelo Eduardo Martins Chief Executive Officer 7,165,262 0 7,165,262 72.5% 12 Aug, 2026
2 Maria Rita De Carvalho Drummond Chief Legal Officer 2,711,949 0 2,711,949 27.5% 12 Aug, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

14 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
10 Aug, 2026 Maria Rita De Carvalho Drummond Chief Legal Officer Acquired J 103,765 $3.99 $414.02K 2,407,459 Direct
10 Aug, 2026 Marcelo Eduardo Martins Chief Executive Officer Acquired J 276,475 $3.99 $1.10Mn 5,090,732 Direct
10 Aug, 2026 Marcelo Eduardo Martins Chief Executive Officer Disposed J 276,475 $3.99 $1.10Mn 2,074,530 Direct
10 Aug, 2026 Maria Rita De Carvalho Drummond Chief Legal Officer Disposed J 103,765 $3.99 $414.02K 304,490 Direct
22 May, 2026 Rubens Ometto Silveira Mello Director Disposed S 77,640 $3.44 $267.08K 0 Indirect
15 Apr, 2026 Maria Rita De Carvalho Drummond Chief Legal Officer Disposed S 35,800 $5.57 $199.41K 2,202,136 Direct
10 Apr, 2026 Marcelo Eduardo Martins Chief Executive Officer Acquired P 1,599,086 $7.05 $11.27Mn 3,120,178 Direct
19 May, 2026 Marcelo Eduardo Martins Chief Executive Officer Acquired P 2,441,528 $5.14 $12.55Mn 4,890,286 Direct
16 Apr, 2026 Maria Rita De Carvalho Drummond Chief Legal Officer Disposed S 36,200 $5.48 $198.49K 2,165,936 Direct
17 Apr, 2026 Maria Rita De Carvalho Drummond Chief Legal Officer Disposed S 37,400 $5.48 $204.91K 2,128,536 Direct
10 Apr, 2026 Marcelo Eduardo Martins Chief Executive Officer Disposed J 1,552,511 $7.05 $10.94Mn 4,794,842 Direct
19 May, 2026 Maria Rita De Carvalho Drummond Chief Legal Officer Acquired J 280,954 $5.14 $1.44Mn 2,332,228 Direct
19 May, 2026 Marcelo Eduardo Martins Chief Executive Officer Disposed J 2,441,528 $5.14 $12.55Mn 2,353,314 Direct
19 May, 2026 Maria Rita De Carvalho Drummond Chief Legal Officer Disposed J 280,954 $5.14 $1.44Mn 409,122 Direct