DAWSON GEOPHYSICAL CO

CUSIP: 239359102 Class: CMN

VIRGINIA RETIREMENT SYSTEMS ET AL's Holding History (CIK: 0001005354)

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

Q2 2014
Shares 9,100 Value ($000) $261 Avg Close — Range —
Q1 2014
Shares 9,100 Value ($000) $255 Avg Close — Range —