Cosan S.A Stock Insider Power

Based on the 29 latest insides trades, we have calculated the insider power to be negative at -11.56. In total, the insiders bought 439.95K and sold 467.99K CSAN shares in the last 29 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power

(Last 29 transactions)
-11.56
Buy 439.95K shares
Sell 467.99K shares
83% Buy Activity
Weak Positive Correlation
Buy Signal Low Confidence
May 18, 2026

Analysis Breakdown:

  • Weakened by a contradictory negative Insider Power Score.
  • Confidence increased due to high data reliability score of 90.
  • Supported by overwhelming buy-side pressure (83% buys).

Historical Insider Trades

Date Type Person Role Amount
Mar 18, 2026
Buy
Common Stock
J-Other
Cruz Simon Flavia
Director 0
Value: $0
Mar 18, 2026
Buy
Common Stock
J-Other
Rapparini Soares Luis Claudio
Director 0
Value: $0
Mar 18, 2026
Buy
COMMON STOCK (BVMF: CSAN3)
Bergman Rafael
Chief Finance Officer
Officer 0
Value: $0
Mar 18, 2026
Buy
LONG TERM INCENTIVE (BVMF: CSAN3)
Bergman Rafael
Chief Finance Officer
Officer 0
Value: $0

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

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ABOUT COSAN S.A.
Cosan S.A
Cosan S.A., through its subsidiaries, primarily engages in the fuel distribution business in Brazil, Europe, Latin America, North America, Asia, and internationally. The company's Raízen segment distributes and markets fuels through a franchised network of service stations under the Shell brand; engages in the petroleum refining; operation of convenience stores; manufacture and sale of automotive and industrial lubricants; and production and sal...
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