# Cosan S.A. (CSAN)

- Sector: Energy · Industry: Oil Gas Refining and Marketing
- SEC CIK: 0001430162 ([filings on EDGAR](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001430162))
- Full page: https://inspectstocks.com/stocks/csan
- Data as of: price 2026-09-18; newest filing used 2026-08-17; latest fiscal period ended 2026-06-30

## Grade

**F-** on the balance-sheet rubric used for lenders, 0 of 4 checks passed.

| Check | Result | Now | Before |
| --- | --- | --- | --- |
| Profitable | failed |  |  |
| Earnings growing overall | failed |  |  |
| Earnings growing recently | failed |  |  |
| Earns well on its assets | failed |  |  |
| Book value per share growing | not answerable |  |  |

Business quality (the + / − mark): 1 of 5 checks passed.

| Check | Result | Now | Before |
| --- | --- | --- | --- |
| Profitable | failed |  |  |
| Healthy profit margin | failed |  |  |
| Strong operating margin | passed |  |  |
| Good return on equity | failed |  |  |
| Debt under control | failed |  |  |

How the grade works: the letter counts failed checks (none → A, one → B, two → C, three → D, four or more → F). It is built from SEC filings only — the share price never enters it — and describes the business, not whether the stock is worth buying.

## Key figures

In US dollars, converted from BRL at today's spot rate (every period alike).

| Measure | Value |
| --- | --- |
| Revenue, trailing twelve months | $7.8B |
| Net income, trailing twelve months | -$1.9B |
| Net margin | -24.1% |
| Operating margin | 25.9% |
| Return on equity | -31.4% |
| Debt to equity | 2.07 |
| Diluted EPS, trailing twelve months | -$3.97 |
| Share price | $2.75 |

## More on this company

- [Overview](https://inspectstocks.com/stocks/csan)
- [Financial statements](https://inspectstocks.com/stocks/csan/financials)
- [Competitors](https://inspectstocks.com/stocks/csan/peers)
- [Earnings](https://inspectstocks.com/stocks/csan/earnings)

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Source: InspectStocks, built from the company’s own SEC filings. This describes a business — it is not investment advice and not a recommendation to buy or sell anything.