SBS · Insider Trading

COMPANHIA DE SANEAMENTO B SICO DO ESTADO DE SAO PAULO-SABESP ADS'S

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Every open-market purchase and sale reported by SBS officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings

most recent

Open-Market Buys

code P

Sales

code S

Reporting Insiders

current holders

SBS — Recent Form 4 Transactions (latest 2026-06-17)

Filed	Insider	Role	Type	Shares	Value
2026-06-17	de Sousa Roberval Tavares	Engineering Officer	Sell	−5,900	−$33.87K
2026-06-17	Daniel Szlak	Chief Financial Officer	Sell	−7,381	−$41.26K
2026-06-17	de Sousa Samanta I.S. Tavares	Inst. Rel. & Sustain. Officer	Sell	−5,700	−$32.60K
2026-06-16	Daniel Szlak	Chief Financial Officer	Sell	−7,381	−$208.88K
2026-05-29	de Sousa Roberval Tavares	Engineering Officer	Sell	−5,900	−$169.98K
2026-05-27	de Sousa Samanta I.S. Tavares	Inst. Rel. & Sustain. Officer	Sell	−5,700	−$163.08K
2026-05-15	Longo Debora Pierini	Operations & Maint. Officer	MIXED	+5,976	−$15.17K
2026-05-15	Maia Denis Maciel	Customer & Technology Officer	MIXED	+7,381	−$18.73K
2026-05-15	Daniel Szlak	Chief Financial Officer	MIXED	+7,381	−$18.73K
2026-05-15	Peralta Maria Alicia Lima	Chief Legal Officer	MIXED	+4,378	−$11.11K
2026-05-15	Valle Fehlberg Gustavo Do	Corporate Services Officer	MIXED	+5,344	−$13.56K
2026-05-15	Piani Carlos Augusto Leone	CEO	MIXED	+36,464	−$92.53K
2026-05-15	Junior Josue Bressane	Chief People Officer	MIXED	+5,344	−$13.56K
2026-05-15	Strauch Rafael Costa	New Bus. & Projects Officer	MIXED	+5,743	−$14.58K
2026-05-15	de Sousa Roberval Tavares	Engineering Officer	MIXED	+5,976	−$15.17K
2026-05-15	Domingues Luciane Godinho	Reg. & Energy Proc. Officer	MIXED	+7,480	−$18.98K

SBS — Current Insider Holders

Insider	Role	Shares Held	Value
Piani Carlos Augusto Leone	CEO	79,111	$382.90K
Maia Denis Maciel	Customer & Technology Officer	10,181	$49.28K
Strauch Rafael Costa	New Bus. & Projects Officer	7,922	$38.34K
Domingues Luciane Godinho	Reg. & Energy Proc. Officer	7,480	$36.20K
Junior Josue Bressane	Chief People Officer	7,371	$35.68K
Longo Debora Pierini	Operations & Maint. Officer	5,976	$28.92K
Valle Fehlberg Gustavo Do	Corporate Services Officer	5,344	$25.86K
Peralta Maria Alicia Lima	Chief Legal Officer	4,378	$21.19K
de Sousa Roberval Tavares	Engineering Officer	76	$368
de Sousa Samanta I.S. Tavares	Inst. Rel. & Sustain. Officer	43	$208

SBS Insider Trading FAQ

Who are the insiders at SBS?

10 officers, directors and 10%+ beneficial owners currently report holdings in SBS via SEC Form 4.

Are SBS insiders buying or selling?

Across the 16 most recent Form 4 filings for SBS, 0 were open-market purchases (code P) and 6 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.

How current is SBS insider data?

Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent SBS filing is dated 2026-06-17.

How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the SBS quote page; the site-wide leaderboard is on the insider transactions hub.