UNIT CORP

CUSIP: 909218109 Class: COM

STATE OF MICHIGAN RETIREMENT SYSTEM's Holding History (CIK: 0000762152)

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

Q2 2015
Shares 21,400 Value ($000) $580 Avg Close — Range —
Q1 2015
Shares 21,000 Value ($000) $588 Avg Close — Range —
Q4 2014
Shares 21,900 Value ($000) $747 Avg Close — Range —
Q3 2014
Shares 21,900 Value ($000) $1,284 Avg Close — Range —
Q2 2014
Shares 20,800 Value ($000) $1,432 Avg Close — Range —
Q1 2014
Shares 20,600 Value ($000) $1,347 Avg Close — Range —
Q4 2013
Shares 20,500 Value ($000) $1,058 Avg Close — Range —
Q3 2013
Shares 20,400 Value ($000) $948 Avg Close — Range —
Q2 2013
Shares 20,100 Value ($000) $856 Avg Close — Range —