ORBITAL ATK INC

CUSIP: 68557N103 Class: COM

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

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

Q1 2018
Shares 21,100 Value ($000) $2,798 Avg Close — Range —
Q4 2017
Shares 20,700 Value ($000) $2,722 Avg Close — Range —
Q3 2017
Shares 21,700 Value ($000) $2,890 Avg Close — Range —
Q2 2017
Shares 23,800 Value ($000) $2,341 Avg Close — Range —
Q1 2017
Shares 23,400 Value ($000) $2,293 Avg Close — Range —
Q4 2016
Shares 23,600 Value ($000) $2,070 Avg Close — Range —
Q3 2016
Shares 23,600 Value ($000) $1,799 Avg Close — Range —
Q2 2016
Shares 23,500 Value ($000) $2,001 Avg Close — Range —
Q1 2016
Shares 23,500 Value ($000) $2,043 Avg Close — Range —
Q4 2015
Shares 23,300 Value ($000) $2,082 Avg Close — Range —
Q3 2015
Shares 27,000 Value ($000) $1,940 Avg Close — Range —
Q2 2015
Shares 27,100 Value ($000) $1,988 Avg Close — Range —
Q1 2015
Shares 26,900 Value ($000) $2,061 Avg Close — Range —