COMPANHIA DE SANEAMENTO BASI

Ticker: SBS CUSIP: 20441A102 Class: ADR

Northwest & Ethical Investments L.P.'s Holding History (CIK: 0002033536)

Note: Option positions (PUT/CALL) are excluded.

Q1 2012
Shares 3,872 Value ($000) $297 Avg Close — Range —
Q4 2011
Shares 9,462 Value ($000) $527 Avg Close — Range —
Q3 2011
Shares 9,462 Value ($000) $439 Avg Close — Range —
Q2 2011
Shares 20,962 Value ($000) $1,251 Avg Close — Range —
Q1 2011
Shares 26,162 Value ($000) $1,537 Avg Close — Range —
Q4 2010
Shares 41,362 Value ($000) $2,187 Avg Close — Range —
Q3 2010
Shares 58,562 Value ($000) $2,665 Avg Close — Range —
Q2 2010
Shares 89,356 Value ($000) $3,694 Avg Close — Range —
Q1 2010
Shares 102,256 Value ($000) $3,763 Avg Close — Range —
Q4 2009
Shares 101,656 Value ($000) $3,977 Avg Close — Range —
Q3 2009
Shares 98,056 Value ($000) $3,719 Avg Close — Range —