Tavares de Sousa Roberval 4

What Happened Tavares de Sousa Roberval, an engineering officer at COMPANHIA DE SANEAMENTO BASICO DO ESTADO DE SAO PAULO — SABESP (SBSP3), had 8,243 restricted stock units (RSUs) vest and convert into common shares on May 1, 2026. To cover tax liabilities, 2,267 of those shares were withheld/sold at $6.69 per share, producing $15,166 in proceeds. Net of withholding, Roberval received 5,976 shares. This was a routine vesting/tax-withholding event rather than an open-market purchase or a discretionary sale.

Key Details

• Transaction date(s): May 1, 2026 (reported on Form 4 filed May 15, 2026).
• Vesting/conversion: 8,243 RSUs converted into 8,243 common shares (reported as derivative conversion, code M).
• Tax withholding: 2,267 shares disposed at $6.69 each = $15,166 (reported under code F).
• Net shares issued to insider: 5,976 (8,243 − 2,267).
• Shares owned after transaction: not specified in the filing.
• Footnote: RSUs were granted April 29, 2025 (32,965 RSUs total) and vest pro rata on May 1 of 2026–2029. Filing remarks also note dividend equivalents, a March 2026 capital increase, and an April 2026 stock split.
• Regulatory note: Issuer is a foreign private issuer; transactions are exempt from Sections 16(b) and 16(c). The Form 4 was filed May 15 for May 1 transactions (later than the typical 2-business-day window for U.S. insiders).

Context This was an automatic compensation vesting event (RSUs converting to shares) with shares withheld to cover taxes — a common, non-informational insider event. The M-code entries reflect conversion/cancellation of the derivative RSUs; the F-code shows the tax-withholding disposition. For investors tracking insider buying vs. selling, purchases are generally more informative; this filing documents compensation vesting and routine withholding rather than a deliberate market trade.