Companhia de Saneamento de Minas Gerais Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of CSMG3?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	-6,616	-0.00174%
Institutions	88,584,012	23.4%
General Public	100,354,422	26.5%
State or Government	190,249,612	50.2%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 72.48% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
50.2%	State of Minas Gerais, Brazil.	190,249,612	R$7.2b	0%	no data
5.02%	Perfin Administracao de Recursos Ltda.	19,052,527	R$721.9m	0%	83.07%
4.65%	The Goldman Sachs Group, Inc.	17,639,520	R$668.4m	0%	0.05%
3.17%	BlackRock, Inc.	12,011,505	R$455.1m	6.11%	no data
2.06%	The Vanguard Group, Inc.	7,823,189	R$296.4m	0%	no data
1.29%	Amundi Asset Management SAS	4,879,575	R$184.9m	-0.3%	0.01%
0.76%	Dimensional Fund Advisors LP	2,895,350	R$109.7m	0%	no data
0.49%	KBC Asset Management NV	1,875,184	R$71.1m	0%	0.02%
0.48%	Bradesco Asset Management S.A. Distribuidora de Títulos e Valores Mobiliários	1,808,966	R$68.5m	0%	0.69%
0.46%	BNY Asset Management	1,729,088	R$65.5m	-0.16%	no data
0.45%	Boston Partners Global Investors, Inc.	1,723,900	R$65.3m	0%	0.01%
0.37%	Eaton Vance Management	1,408,192	R$53.4m	0%	no data
0.35%	Invesco Capital Management LLC	1,323,500	R$50.1m	17.9%	no data
0.28%	Cambria Investment Management, L.P.	1,066,731	R$40.4m	2.42%	0.22%
0.28%	Constancia Investimentos Ltda	1,059,470	R$40.1m	0%	2.74%
0.27%	Northern Trust Global Investments	1,035,970	R$39.3m	0.27%	no data
0.26%	ÖKoworld Lux S.A.	1,000,000	R$37.9m	0%	0.25%
0.26%	Artesanal Investimentos Ltda.	1,000,000	R$37.9m	0%	9.35%
0.25%	Goldman Sachs Asset Management, L.P.	945,200	R$35.8m	0%	no data
0.22%	AXA Investment Managers S.A.	820,400	R$31.1m	0%	0.01%
0.21%	Causeway Capital Management LLC	793,783	R$30.1m	0%	0.02%
0.18%	Caixa Econômica Federal	696,085	R$26.4m	0%	0.05%
0.18%	RAM Active Investments S.A.	679,397	R$25.7m	0%	0.42%
0.18%	Grantham Mayo Van Otterloo & Co. LLC	664,287	R$25.2m	-43.1%	0.01%
0.17%	Banco Itaucard S.A.	639,695	R$24.2m	0%	1.84%

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/11/24 20:49
End of Day Share Price	2025/11/21 00:00
Earnings	2025/09/30
Annual Earnings	2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

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Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Companhia de Saneamento de Minas Gerais is covered by 19 analysts. 9 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Felipe Mattar	Barclays
Rafael Bezerra Dias	BB Banco de Investimento S.A.
Gustavo Faria	BofA Global Research