WESTERN REFNG INC

CUSIP: 959319104 Class: COM

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

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

Q1 2017
Shares 32,200 Value ($000) $1,129 Avg Close — Range —
Q4 2016
Shares 31,900 Value ($000) $1,207 Avg Close — Range —
Q3 2016
Shares 31,900 Value ($000) $844 Avg Close — Range —
Q2 2016
Shares 32,100 Value ($000) $662 Avg Close — Range —
Q1 2016
Shares 26,900 Value ($000) $783 Avg Close — Range —
Q4 2015
Shares 27,400 Value ($000) $976 Avg Close — Range —
Q3 2015
Shares 32,200 Value ($000) $1,421 Avg Close — Range —
Q2 2015
Shares 32,200 Value ($000) $1,405 Avg Close — Range —
Q1 2015
Shares 32,000 Value ($000) $1,580 Avg Close — Range —
Q4 2014
Shares 34,700 Value ($000) $1,311 Avg Close — Range —