DAWSON GEOPHYSICAL CO

CUSIP: 239359102 Class: CMN

Hillsdale Investment Management Inc.'s Holding History (CIK: 0001368465)

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

Q3 2013
Shares 2,600 Value ($000) $84 Avg Close — Range —
Q2 2013
Shares 8,500 Value ($000) $313 Avg Close — Range —