DAWSON GEOPHYSICAL CO

CUSIP: 239359102 Class: CMN

TEACHER RETIREMENT SYSTEM OF TEXAS's Holding History (CIK: 0000796848)

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

Q3 2014
Shares 293 Value ($000) $5 Avg Close — Range —
Q2 2014
Shares 293 Value ($000) $8 Avg Close — Range —
Q1 2014
Shares 293 Value ($000) $8 Avg Close — Range —
Q4 2013
Shares 304 Value ($000) $10 Avg Close — Range —
Q3 2013
Shares 1,017 Value ($000) $33 Avg Close — Range —
Q2 2013
Shares 548 Value ($000) $20 Avg Close — Range —