Over the past 12 months, Companhia de Saneamento Basico Do Estado de Sao Paulo-Sabesp insiders sold $649,667 of stock on the open market and made no open-market purchases.
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Piani Carlos Augusto Leone | Ceo | 182,320 | 0 | 182,320 | 46.7% | 15 May, 2026 |
| 2 | Domingues Luciane Godinho | Reg. Energy Proc. Officer | 37,400 | 0 | 37,400 | 9.6% | 15 May, 2026 |
| 3 | Maia Denis Maciel | Customer Technology Officer | 36,905 | 0 | 36,905 | 9.4% | 15 May, 2026 |
| 4 | Longo Debora Pierini | Operations Maint. Officer | 29,880 | 0 | 29,880 | 7.6% | 15 May, 2026 |
| 5 | Strauch Rafael Costa | New Bus. Projects Officer | 28,715 | 0 | 28,715 | 7.4% | 15 May, 2026 |
| 6 | Junior Josue Bressane | Chief People Officer | 26,720 | 0 | 26,720 | 6.8% | 15 May, 2026 |
| 7 | Valle Fehlberg Gustavo Do | Corporate Services Officer | 26,720 | 0 | 26,720 | 6.8% | 15 May, 2026 |
| 8 | Peralta Maria Alicia Lima | Chief Legal Officer | 21,890 | 0 | 21,890 | 5.6% | 15 May, 2026 |
| 9 | De Sousa Roberval Tavares | Engineering Officer | 76 | 0 | 76 | 0.0% | 17 Jun, 2026 |
| 10 | De Sousa Samanta I.S. Tavares | Inst. Rel. Sustain. Officer | 43 | 0 | 43 | 0.0% | 17 Jun, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 25 May, 2026 | De Sousa Roberval Tavares | Engineering Officer | Disposed S | 5,900 | $5.74 | $33.87K | 76 | Direct |
| 21 May, 2026 | De Sousa Samanta I.S. Tavares | Inst. Rel. Sustain. Officer | Disposed S | 5,700 | $5.72 | $32.60K | 43 | Direct |
| 15 Jun, 2026 | Daniel Szlak | Chief Financial Officer | Disposed S | 7,300 | $5.59 | $40.81K | 81 | Direct |
| 15 Jun, 2026 | Daniel Szlak | Chief Financial Officer | Disposed S | 81 | $5.58 | $452 | 0 | Direct |
| 15 Jun, 2026 | Daniel Szlak | Chief Financial Officer | Disposed S | 7,300 | $28.30 | $206.59K | 0 | Direct |
| 15 Jun, 2026 | Daniel Szlak | Chief Financial Officer | Disposed S | 81 | $28.30 | $2.29K | 0 | Direct |
| 25 May, 2026 | De Sousa Roberval Tavares | Engineering Officer | Disposed S | 5,900 | $28.81 | $169.98K | 76 | Direct |
| 21 May, 2026 | De Sousa Samanta I.S. Tavares | Inst. Rel. Sustain. Officer | Disposed S | 5,700 | $28.61 | $163.08K | 43 | Direct |
| 01 May, 2026 | Daniel Szlak | Chief Financial Officer | Acquired M | 10,181 | — | — | 50,905 | Direct |
| 01 May, 2026 | Piani Carlos Augusto Leone | Ceo | Acquired M | 50,295 | — | — | 323,515 | Direct |
| 01 May, 2026 | Peralta Maria Alicia Lima | Chief Legal Officer | Acquired M | 6,039 | $0.00 | $0 | 30,195 | Direct |
| 01 May, 2026 | Junior Josue Bressane | Chief People Officer | Acquired M | 7,371 | — | — | 36,855 | Direct |
| 01 May, 2026 | Valle Fehlberg Gustavo Do | Corporate Services Officer | Acquired M | 7,371 | — | — | 36,855 | Direct |
| 01 May, 2026 | Maia Denis Maciel | Customer Technology Officer | Acquired M | 10,181 | — | — | 50,905 | Direct |
| 01 May, 2026 | De Sousa Roberval Tavares | Engineering Officer | Acquired M | 8,243 | — | — | 41,215 | Direct |
| 01 May, 2026 | Domingues Luciane Godinho | Reg. Energy Proc. Officer | Acquired M | 10,317 | — | — | 51,585 | Direct |
| 01 May, 2026 | Longo Debora Pierini | Operations Maint. Officer | Acquired M | 8,243 | — | — | 41,215 | Direct |
| 01 May, 2026 | Strauch Rafael Costa | New Bus. Projects Officer | Acquired M | 7,922 | — | — | 39,610 | Direct |
| 01 May, 2026 | Maia Denis Maciel | Customer Technology Officer | Disposed F | 2,800 | $1.34 | $3.75K | 36,905 | Direct |
| 01 May, 2026 | Peralta Maria Alicia Lima | Chief Legal Officer | Disposed F | 1,661 | $1.34 | $2.22K | 21,890 | Direct |