PIONEER NAT RES CO

CUSIP: 723787107 Class: COM

ZEVENBERGEN CAPITAL INVESTMENTS LLC's Holding History (CIK: 0001276918)

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

Q1 2015
Shares 207,035 Value ($000) $33,852 Avg Close — Range —
Q4 2014
Shares 261,995 Value ($000) $38,998 Avg Close — Range —
Q3 2014
Shares 272,890 Value ($000) $53,751 Avg Close — Range —
Q2 2014
Shares 345,575 Value ($000) $79,417 Avg Close — Range —
Q1 2014
Shares 349,425 Value ($000) $65,391 Avg Close — Range —
Q4 2013
Shares 342,170 Value ($000) $62,983 Avg Close — Range —
Q3 2013
Shares 376,555 Value ($000) $71,094 Avg Close — Range —
Q2 2013
Shares 381,390 Value ($000) $55,206 Avg Close — Range —