DAWSON GEOPHYSICAL CO

CUSIP: 239359102 Class: CMN

Municipal Employees' Retirement System of Michigan's Holding History (CIK: 0001588873)

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

Q3 2014
Shares 15,500 Value ($000) $282 Avg Close — Range —
Q2 2014
Shares 15,500 Value ($000) $444 Avg Close — Range —
Q1 2014
Shares 15,500 Value ($000) $434 Avg Close — Range —