DAWSON GEOPHYSICAL CO

CUSIP: 239359102 Class: CMN

CITADEL ADVISORS LLC's Holding History (CIK: 0001423053)

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

Q3 2014
Shares 15,334 Value ($000) $278 Avg Close — Range —
Q4 2013
Shares 6,623 Value ($000) $224 Avg Close — Range —
Q3 2013
Shares 10,089 Value ($000) $327 Avg Close — Range —