DAWSON GEOPHYSICAL CO

CUSIP: 239359102 Class: CMN

RENAISSANCE TECHNOLOGIES LLC's Holding History (CIK: 0001037389)

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

Q4 2014
Shares 210,300 Value ($000) $2,572 Avg Close — Range —
Q3 2014
Shares 76,500 Value ($000) $1,391 Avg Close — Range —
Q2 2014
Shares 53,364 Value ($000) $1,529 Avg Close — Range —
Q1 2014
Shares 69,356 Value ($000) $1,943 Avg Close — Range —
Q4 2013
Shares 42,164 Value ($000) $1,426 Avg Close — Range —
Q3 2013
Shares 69,558 Value ($000) $2,259 Avg Close — Range —
Q2 2013
Shares 40,958 Value ($000) $1,510 Avg Close — Range —