PIONEER ENERGY SVCS CORP

CUSIP: 723664108 Class: COM

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q1 2017
Shares 175,585 Value ($000) $703 Avg Close — Range —
Q4 2016
Shares 400,346 Value ($000) $2,743 Avg Close — Range —
Q3 2016
Shares 224,929 Value ($000) $909 Avg Close — Range —
Q2 2016
Shares 209,118 Value ($000) $962 Avg Close — Range —
Q1 2016
Shares 177,618 Value ($000) $391 Avg Close — Range —
Q4 2015
Shares 177,618 Value ($000) $385 Avg Close — Range —
Q3 2015
Shares 177,618 Value ($000) $373 Avg Close — Range —
Q2 2015
Shares 168,080 Value ($000) $1,066 Avg Close — Range —
Q4 2014
Shares 41,744 Value ($000) $232 Avg Close — Range —
Q3 2014
Shares 66,288 Value ($000) $929 Avg Close — Range —
Q3 2013
Shares 58,700 Value ($000) $441 Avg Close — Range —
Q2 2013
Shares 58,700 Value ($000) $389 Avg Close — Range —