Welcome to our dedicated page for Companhia De Saneamento Basico SEC filings (Ticker: SBS), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
This page provides access to Sabesp’s (Companhia de Saneamento Básico do Estado de São Paulo – SABESP, NYSE: SBS) U.S. regulatory filings, primarily Form 20‑F annual reports and Form 6‑K current reports filed as a foreign private issuer. These documents contain detailed information on the company’s basic and environmental sanitation activities in the State of São Paulo, its financial position and performance, and key regulatory and contractual developments.
Through its 6‑K filings, Sabesp furnishes earnings materials that include consolidated financial statements, notes, and management commentary. Investors can review data on revenue from sanitation services and construction, operating costs and expenses, adjusted EBITDA, net income, earnings per share, cash flows, capital structure, and investment levels in water supply, sewage collection and sewage treatment projects. Quarterly information (ITR) filed with the Brazilian regulator and furnished to the SEC provides granular balance sheet and income statement details, including borrowings and financings, PPP obligations, provisions, profit reserves and equity movements.
The company also uses 6‑K material facts to disclose regulatory and tariff decisions, such as ARSESP resolutions authorizing average rate adjustments, equilibrium rate calculations, and validation of the regulatory asset base. Other filings describe capital markets transactions, including the approval of multiple debenture issuances, their main characteristics and intended uses, as well as Board decisions on interest on equity payments and capital increases via capitalization of profit reserves.
Additional 6‑Ks cover strategic transactions and contracts, such as the planned acquisition of a controlling stake in EMAE – Empresa Metropolitana de Águas e Energia S.A. and a turnkey NB‑IoT smart metering contract with Telefônica group entities. On Stock Titan, these filings are complemented by AI‑powered summaries that highlight the main points of lengthy financial tables, regulatory notes and transaction descriptions, helping users quickly understand how each filing relates to Sabesp’s sanitation services business, tariffs, investments and capital structure.
COMPANHIA DE SANEAMENTO BASICO DO ESTADO DE SAO PAULO-SABESP reported initial holdings for Chief Legal Officer Maria Alicia Lima Peralta on a Form 3. She holds restricted stock units (RSUs) convertible into 4,797 and 4,641 Common Shares, from grants dated April 29, 2025 and December 19, 2025. These RSUs vest in equal installments from May 1, 2026 through May 1, 2029, and from January 1, 2027 through January 1, 2030, subject to continued service.
COMPANHIA DE SANEAMENTO BÁSICO DO ESTADO DE SÃO PAULO – SABESP engineering officer Roberval Tavares de Sousa filed a Form 3 reporting holdings of restricted stock units (RSUs) linked to common shares. Each RSU gives the right to receive one common share if vesting conditions are met.
The filing lists RSUs covering 6,548 underlying common shares from a grant on April 29, 2025, vesting pro rata on May 1 of 2026, 2027, 2028 and 2029, subject to continued service. It also lists RSUs covering 6,344 underlying common shares from a December 19, 2025 grant, vesting pro rata on January 1 of 2027, 2028, 2029 and 2030, also subject to continued service. The Form 3 reflects compensation-related equity, not open-market buying or selling.
Sabesp reported strong 4Q25 and 2025 operating results alongside a major investment ramp-up. Adjusted earnings per share in 4Q25 rose to R$3.93 from R$2.10 a year earlier, supported by 3.0% volume growth, tariff gains and better collection.
Full-year 2025 Adj EBITDA reached R$13.2 bn, up 17% year over year, while adjusted net income was R$6.3 bn, a 22% increase. The company invested R$15.2 bn in 2025, more than double 2024, focused on expanding water and sewage services and meeting universalization targets.
In 4Q25, adjusted EBITDA was R$3.4 bn, 13% above 4Q24, with operating costs down 10% versus the prior year and headcount reduced 17%. Sabesp reports having brought water to 1.8 million people and sewage to 3.8 million people in 2024–25, while creating around 40,000 direct and indirect jobs.
Sabesp reported its first full year after privatization with modest revenue growth, solid profitability and a sharp ramp-up in investment. Net revenue reached R$ 37.6 billion in 2025, up 4% versus 2024. Reported net income was R$ 8.5 billion, 12% lower mainly because 2024 included a one-off gain from financial asset bifurcation; excluding this effect, adjusted net income was about R$ 6.3 billion, a 22% year-on-year increase.
The company invested R$ 15.2 billion in water and sewage infrastructure, 120% more than in 2024, supporting universalization targets and serving roughly 30 million water customers. Net debt rose to R$ 27.8 billion, but the net debt/adjusted EBITDA ratio ended at 2.2x and the leverage ratio at 40%, reflecting strong cash generation alongside R$ 18.7 billion in new debt issues.
Sabesp approved R$ 1.8 billion in Interest on Equity to shareholders, launched a share repurchase program of up to 6.9 million shares and ended 2025 with 3.6 million treasury shares. A R$ 2.81 billion capital increase via bonus shares lifted equity to R$ 42.4 billion, up 15% from 2024, while the workforce was reduced by 13% as part of efficiency initiatives.
Companhia de Saneamento Básico do Estado de São Paulo – Sabesp announced an agreement to acquire 100% of the quotas of Oceania Fundo de Investimento em Ações for R$ 171,637,858.05 in cash, payable on March 13, 2026, with no subsequent price adjustments.
Oceania’s only asset is 3,407,000 common shares of EMAE – Empresa Metropolitana de Águas e Energia S.A., representing 23.17% of EMAE’s common shares and 9.22% of its total share capital. The price is based on the public tender offer price of R$49.47 per EMAE share, adjusted by the SELIC rate to March 11, 2026, resulting in R$50.38 per share.
Companhia de Saneamento Básico do Estado de São Paulo – Sabesp approved its 38th issuance of simple, non-convertible, unsecured debentures, in up to five series, for public distribution to professional investors, totaling R$ 6,292,086,000.00 on the issue date. The debentures will be offered under Brazil’s automatic registration procedure, pursuant to CVM Resolution No. 160, and are restricted to professional investors under Resolution No. 30. The distribution will be conducted by financial institutions in the securities distribution system under a firm-commitment underwriting regime, meaning underwriters commit to place the full offering.
Companhia de Saneamento Básico do Estado de São Paulo – Sabesp reports that in 2025 it invested a preliminary, unaudited total of R$ 15.2 billion in water supply and sewage infrastructure. This amount is 2.2 times higher than the R$ 6,9 billion invested in 2024, with spending accelerating in the second half of 2025 and rising 36% compared to the first half of 2025.
The company states that these higher investments support its goal of achieving universal access to basic sanitation by 2029 for the population in the URAE-1 contract concession area.
Companhia de Saneamento Básico do Estado de São Paulo – Sabesp has filed for registration of a public tender offer to buy up to 3,695,800 common shares of EMAE – Empresa Metropolitana de Águas e Energia S.A.. These shares represent 10.0% of EMAE’s total capital and 25.13% of its voting capital, excluding shares already held by Sabesp or in treasury.
The tender offer price is R$49.46 per share, equal to 80% of the R$61.83 per-share amount Sabesp paid in the direct sale of EMAE’s control, in which it acquired 11,009,550 common shares and 29,950 preferred shares for a total of R$682,643,113.65. The tender price will be updated by the SELIC rate from January 21, 2026 until settlement. Sabesp states it will keep shareholders informed about relevant developments.
Companhia de Saneamento Básico do Estado de São Paulo – Sabesp announced it has signed a Share Purchase Agreement with Iguá Saneamento S.A. to acquire common shares representing 90% of Saneamento de Mirassol – Sanessol S.A.
Sanessol holds the concession to operate public water supply and sewage services in the city of Mirassol, São Paulo, serving approximately 65,000 people. Completion of the transaction is subject to customary conditions, including approval by Brazil’s antitrust authority CADE. Sabesp describes this step as advancing its strategic plan and strengthening its presence in Brazil’s water and sanitation sector.
Companhia de Saneamento Básico do Estado de São Paulo – Sabesp agreed a long-term loan of US$1,500,000,000.00 with the Inter-American Investment Corporation. The financing is split into an A Loan of US$150,000,000.00 and a larger B Loan of US$1,350,000,000.00, with disbursements made over time.
The B Loan will back the issuance of blue senior secured notes in two tranches: US$850,000,000.00 due 2031 priced at 5.750% and US$500,000,000.00 due 2036 priced at 6.500%, both to be listed on the Euro MTF market of the Luxembourg Stock Exchange. Closing of the loan and blue bond issuance is expected on February 3, 2026, subject to customary conditions precedent.
Sabesp plans to use the proceeds to support projects aimed at universalizing basic sanitation services in the State of São Paulo, including building and upgrading sewage treatment facilities and expanding collection systems, aligning the financing with environmental and infrastructure goals.