PIONEER ENERGY SVCS CORP

CUSIP: 723664108 Class: COM

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

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

Q4 2018
Shares 10,000 Value ($000) $29 Avg Close — Range —
Q3 2018
Shares 10,000 Value ($000) $30 Avg Close — Range —