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Companhia de Saneamento Basico do Estado de SAO Paulo-Sabesp: what insiders have been doing
Companhia de Saneamento Basico do Estado de SAO Paulo-Sabesp, classified in the Energy sector, is a listed company. Its insiders report their share dealings to SEC (Form 4). Over the twelve months to 18 October 2026, 24 filings were filed, from 11 insiders.
Only sales appear on the open market, 4 sales in all totalling €286k, filed by 3 insiders. The totals exclude 2 filings filed without an amount. Tavares de Sousa Roberval filed the largest sale, €146k, on 29 May 2026.
Filings reach the SEC (Form 4) feed a median of 14 days after the trade. For comparison, the SEC allows two business days to file a Form 4. Keep in mind that insiders sell for many reasons unrelated to the outlook, from tax bills to estate planning.
With 24 filings in twelve months, the company is more active than the median of 19 filings across the 5,814 companies we follow on the same exchange. Our records for Companhia de Saneamento Basico do Estado de SAO Paulo-Sabesp go back to 2026, with no purchases and 4 sales on the open market in total.
In the same sector, recent insider purchases at RGC Resources Inc and Empire Petroleum Corp also feature in our signals. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.
Insider Decl.
24
Thresholds
n/a
Buy Volume
n/a
n/a
Sell Volume
€286,391
4 ops. · all time
Who traded when
BuySaleDaniel Szlak2 sales
de Sousa Roberval Tavares1 sale
de Sousa Samanta I.S. Tavares1 sale
This score ranks the purchase within its own market. A position size is suggested only on the venues of the backtested strategy universe; elsewhere, signals stay on watch. Not investment advice.
Financial data
as of FY 2024FY ended December 2024 · cache
Income statement
Gross profitUS$16.8B
Net incomeUS$8.2B
Last declaration on 16 June 2026
Declarations24 total
81 sharesCommon SharesSEC:0001292814-26-003474:1
7,300 sharesCommon SharesSEC:0001292814-26-003474:0
5,900 shares@ US$28.8191.9% of flowCommon SharesSEC:0001292814-26-003243:0
5,700 shares@ US$28.61100.0% of flowCommon SharesSEC:0001292814-26-003212:0
2,027 shares@ US$6.69100.0% of flowCommon SharesSEC:0001292814-26-003079:1
13,831 shares@ US$6.69100.0% of flowCommon SharesSEC:0001292814-26-003069:1
2,800 shares@ US$6.69100.0% of flowCommon SharesSEC:0001292814-26-003071:1
2,267 shares@ US$6.69100.0% of flowCommon SharesSEC:0001292814-26-003073:1
2,800 shares@ US$6.69100.0% of flowCommon SharesSEC:0001292814-26-003075:1
2,027 shares@ US$6.69100.0% of flowCommon SharesSEC:0001292814-26-003077:1
2,837 shares@ US$6.69100.0% of flowCommon SharesSEC:0001292814-26-003081:1
1,661 shares@ US$6.69100.0% of flowCommon SharesSEC:0001292814-26-003083:1
2,179 shares@ US$6.69100.0% of flowCommon SharesSEC:0001292814-26-003085:1
2,267 shares@ US$6.698.1% of flowCommon SharesSEC:0001292814-26-003087:1
10,317 sharesCommon SharesSEC:0001292814-26-003081:0
6,039 shares0Common SharesSEC:0001292814-26-003083:0
10,181 sharesCommon SharesSEC:0001292814-26-003071:0
8,243 sharesCommon SharesSEC:0001292814-26-003087:0
7,371 sharesCommon SharesSEC:0001292814-26-003079:0
8,243 sharesCommon SharesSEC:0001292814-26-003073:0
50,295 sharesCommon SharesSEC:0001292814-26-003069:0
10,181 sharesCommon SharesSEC:0001292814-26-003075:0
7,371 sharesCommon SharesSEC:0001292814-26-003077:0
7,922 sharesCommon SharesSEC:0001292814-26-003085:0
24 of 24 declarations
About Companhia de Saneamento Basico do Estado de SAO Paulo-Sabesp
Companhia de Saneamento Básico do Estado de São Paulo – Sabesp is the leading water and sanitation utility in Brazil and one of the largest sanitation companies globally. For international investors, it is a classic defensive infrastructure-like utility: essential services, regulated cash flows, and long-duration investment needs tied to population growth, network expansion, and environmental compliance. The company’s common shares trade in Brazil as SBSP3 on B3, while its Level III ADRs trade on the NYSE in the United States under the symbol SBS, giving U.S. market exposure to a predominantly Brazilian operating asset. ([ri.sabesp.com.br](https://ri.sabesp.com.br/en/the-company/corporate-profile/?utm_source=openai))
Sabesp was founded in 1973 through the merger of public companies and state-controlled entities focused on basic sanitation in the State of São Paulo. Its headquarters are in São Paulo, at 300 Costa Carvalho Street in the Pinheiros district. Today, the company provides water supply, sewage collection, and sewage treatment across 375 municipalities in the State of São Paulo, serving tens of millions of customers and covering a large share of Brazil’s most economically important state. ([ri.sabesp.com.br](https://ri.sabesp.com.br/a-companhia/perfil/?utm_source=openai))
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The business model is centered on three core activities: potable water production and distribution, sewage collection, and wastewater treatment. Sabesp also holds minority stakes in a small number of related businesses, including companies active in water, sanitation, energy, and paving, but these are ancillary to the core utility franchise. Operationally, the company’s priorities are network reliability, water security, sewage expansion, treatment capacity, and progress toward universal sanitation coverage. ([ri.sabesp.com.br](https://ri.sabesp.com.br/en/the-company/corporate-profile/?utm_source=openai))
From a competitive standpoint, Sabesp has a privileged scale position in its home market. Its franchise benefits from dense urban demand, large embedded infrastructure, technical know-how, and a strong regulatory footprint. Following sector reforms in Brazil, the company operates under a more disciplined contractual and tariff framework, with periodic reviews and efficiency-linked mechanisms. Importantly, Sabesp states that its universalization deadline in its service area was accelerated to 2029 after the privatization process completed in 2024. ([ri.sabesp.com.br](https://ri.sabesp.com.br/a-companhia/ambiente-regulatorio/?utm_source=openai))
Recent milestones matter for the investment case. Sabesp won its first competitively awarded concession in 2023, in Olímpia, which marked a strategic shift beyond its traditional legacy footprint. In 2024, the company completed privatization, a major governance and strategic inflection point. As of 2026, its published universalization dashboard still shows substantial progress in urban water and sewage metrics, but meaningful work remains in informal and rural areas, indicating continued capital intensity and execution risk even as the long-term demand backdrop remains attractive. ([ri.sabesp.com.br](https://ri.sabesp.com.br/a-companhia/perfil/?utm_source=openai))
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