DAWSON GEOPHYSICAL CO

CUSIP: 239359102 Class: CMN

ACADIAN ASSET MANAGEMENT LLC's Holding History (CIK: 0000916542)

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

Q4 2014
Shares 67,722 Value ($000) $828 Avg Close — Range —
Q3 2014
Shares 114,996 Value ($000) $2,089 Avg Close — Range —
Q2 2014
Shares 208,557 Value ($000) $5,975 Avg Close — Range —
Q1 2014
Shares 242,349 Value ($000) $6,788 Avg Close — Range —
Q4 2013
Shares 239,058 Value ($000) $8,086 Avg Close — Range —
Q3 2013
Shares 201,835 Value ($000) $6,555 Avg Close — Range —