- The Fact: Sabesp and EMAE announced the completion of the share merger of EMAE into Sabesp.
- Share Exchange: EMAE shareholders received 1.31950000000 SBSP3 shares for every 1 EMAE share (common or preferred).
- Capital Increase: Sabesp issued 9,875,257 new common shares, raising its capital by R$ 125.78 million.
Companhia de Saneamento Básico do Estado de São Paulo — Sabesp and EMAE have confirmed the completion of their share merger, wrapping up another corporate milestone anticipated by the market. For investors holding SBSP3 or tracking a position in EMAE, the transaction adjusts the ownership structure without altering the business's fundamental operations.
SBSP3: What Happened With the EMAE Share Merger?
Sabesp has formally concluded the incorporation of EMAE's shares. In a joint material fact filing submitted to Brazil's securities regulator, the CVM, on October 27, 2026, the companies announced that the transaction had been consummated and that the new Sabesp common shares had already been credited to former EMAE shareholders' accounts with their respective intermediaries.
The exchange ratio followed the parameters approved at the shareholder meeting. Each EMAE shareholder received exactly 1.31950000000 Sabesp common shares (SBSP3) for every 1 common or preferred share of EMAE they held in their portfolio. As a result, EMAE shares cease to trade independently as the shareholder base is unified under Sabesp.
The transaction wraps up a process well mapped out by the market. The move had been communicated in previous joint material facts released throughout 2026 in April, June, July, September, and October. Therefore, the announced consummation represents the execution of corporate steps already expected by investors, with no surprises or last-minute changes to the approved plan.
What Are the Numbers Behind Sabesp's Capital Increase?
Sabesp's share capital increased by R$ 125.78 million. According to the official announcement signed by the Investor Relations officers of both companies, Sabesp's share capital was raised by exactly R$ 125,780,416.67 to absorb the newly issued EMAE shares.
A total of 9,875,257 new Sabesp common shares were issued. This issuance was approved at the company's extraordinary general meeting held on July 30, 2026, and served as direct compensation for delivering SBSP3 shares to investors coming over from EMAE.
Merger approved at EGM on 07/30/2026
SBSP3 common shares on the B3
SBSP3 shares for each EMAE share
The dilution resulting from the issuance occurred as expected. Because the issuance of new shares strictly followed the proportions previously approved at shareholder meetings, the impact on the company's ownership structure was already priced into the market value of SBSP3 shares, which closed the last trading session at R$ 25.65, up 1.50% on the day and up 0.17% over the past 12 months.
What Happens to Fractional Shares on the B3?
Fractional shares generated by the exchange will be grouped and sold on the market. Because the exchange ratio is fractional (1.31950000000 SBSP3 shares per EMAE share), many investors were left with non-integer share fractions. Sabesp explained in the material fact that these fractions will be bundled into whole numbers for subsequent sale on B3 S.A. – Brasil, Bolsa, Balcão.
The net proceeds from the sale will be credited to shareholders. The funds obtained from the auction or sale on the exchange, minus transaction fees and operating expenses, will be distributed to former EMAE shareholders in the exact proportion of the fractions each was entitled to. The dates and detailed procedures for this settlement will be announced by Sabesp in due course.
If you were already a Sabesp shareholder (SBSP3), the completion of the merger subtly alters the shareholder base due to the increased number of shares outstanding, but it does not change the core investment thesis. The focus remains on executing the sanitation expansion plan, capturing post-privatization operational efficiencies, and generating cash flow for dividends. If you were an EMAE shareholder, your position was automatically converted into SBSP3 in your brokerage account, and you now need only await the cash credit for the fractional shares sold on the B3.
What Should Investors Track in Sabesp Shares Going Forward?
Investor attention now shifts to the next operational steps. The material fact filed with the CVM focuses on the corporate consummation and capital adjustment without detailing the long-term operational impact of integrating EMAE's assets. Moving forward, the key monitoring points involve finalizing financial cleanups and joint operating results.
Sale of fractional shares on the B3 — Monitor the release of Sabesp's notice to the market detailing auction dates and the deposit of net cash proceeds for fractional shares.
Operational integration — Observe in upcoming quarterly reports how EMAE's water and energy infrastructure will be integrated into the company's cost and revenue structure.
Post-privatization execution — Monitor the company's quality metrics (which currently holds a quality score of 6.1 out of 10 on the platform) and its ability to maintain consistent dividends in the sanitation sector.
Editorial Conclusion
The completion of EMAE's share merger into Sabesp fulfills a corporate commitment already well understood by the market. The issuance of 9.87 million SBSP3 shares and the R$ 125.78 million capital increase wrap up the structural design of the transaction without bringing negative surprises for SBSP3. For long-term investors, Sabesp's investment case remains anchored in cost discipline, the execution of sanitation capital expenditures, and potential future dividend distributions.
