PAA NAT GAS STORAGE L P

CUSIP: 693139107 Class: COM UNIT LTD

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

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

Q4 2013
Shares 26,990 Value ($000) $620 Avg Close — Range —
Q3 2013
Shares 54,941 Value ($000) $1,279 Avg Close — Range —
Q2 2013
Shares 59,291 Value ($000) $1,247 Avg Close — Range —