Cosan S.A.
CSAN · Retail-Auto Dealers & Gasoline Stations · EDGAR filings ↗
Reference price $3.44 — last insider sale, 2026-05-22 (estimated from the dated SEC Form 4 price — not a live quote)
Grade
D52Large Brazilian conglomerate posting consecutive net losses with heavy leverage despite a sizable operating base.
Strengths
- Scaled, diversified operating business (fuel, sugar/ethanol, gas, rail) with operating margin at 100th pct and gross margin ~88th pct
- Strong cash balance (100th pct) and positive operating cash flow
Risks
- Net loss (-R$10.2bn), ROE -20.7%, ROA -5.8%; net income and revenue growth in ~5th-6th pct
- High debt/equity (1.69) with thin interest coverage (~1.0x) and recurring impairments
- Brazil macro/FX, controlling-shareholder and PFIC governance risks
Notable findings
Key metrics
Gross margin
31.2%
Operating margin
17.5%
Net margin
-18.6%
Return on equity
-20.7%
Return on assets
-5.8%
ROIC
5.7%
Revenue growth (QoQ)
-12.6%
Net-income growth
-231.1%
Debt / equity
1.7×
Interest coverage
1.0×
Current ratio
1.7×
Tangible book value
$6.4B
Cash & investments
$2.7B
Insider transactions · last 18 months
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| 2026-05-22 | Mello Rubens Ometto Silveira | Sell | 78K | $3.44 |
| 2026-05-19 | Martins Marcelo Eduardo | Buy | 2.4M | $5.14 |
| 2026-05-19 | Drummond Maria Rita de Carvalho | Other | 281K | $5.14 |
| 2026-05-19 | Martins Marcelo Eduardo | Other | 2.4M | $5.14 |
| 2026-05-19 | Drummond Maria Rita de Carvalho | Other | 281K | $5.14 |
| 2026-04-17 | Drummond Maria Rita de Carvalho | Sell | 37K | $5.48 |
| 2026-04-16 | Drummond Maria Rita de Carvalho | Sell | 36K | $5.48 |
| 2026-04-15 | Drummond Maria Rita de Carvalho | Sell | 36K | $5.57 |
| 2026-04-10 | Martins Marcelo Eduardo | Other | 1.6M | $7.05 |
| 2026-04-10 | Martins Marcelo Eduardo | Buy | 1.6M | $7.05 |
All non-derivative Form 4 activity (SEC), newest first.
Recent filings
| Form | Filed | Period | Accession |
|---|---|---|---|
| 20-F | 2026-04-10 | 2025-12-31 | 0001554855-26-000590 ↗ |
| 20-F | 2025-04-30 | 2024-12-31 | 0001554855-25-000406 ↗ |
| 20-F | 2024-11-08 | 2023-12-31 | 0001554855-24-000744 ↗ |
| 20-F | 2023-04-24 | 2022-12-31 | 0001554855-23-000287 ↗ |
| 20-F | 2022-05-16 | 2021-12-31 | 0001554855-22-000330 ↗ |
| 20-F | 2021-04-30 | 2020-12-31 | 0001554855-21-000173 ↗ |