DAWSON GEOPHYSICAL CO

CUSIP: 239359102 Class: CMN

STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM's Holding History (CIK: 0000938076)

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

Q4 2014
Shares 10,912 Value ($000) $133 Avg Close — Range —
Q3 2014
Shares 10,912 Value ($000) $198 Avg Close — Range —
Q2 2014
Shares 10,912 Value ($000) $313 Avg Close — Range —
Q1 2014
Shares 10,912 Value ($000) $306 Avg Close — Range —
Q4 2013
Shares 10,912 Value ($000) $369 Avg Close — Range —
Q3 2013
Shares 10,912 Value ($000) $354 Avg Close — Range —
Q2 2013
Shares 10,782 Value ($000) $397 Avg Close — Range —