MANTECH INTL CORP

CUSIP: 564563104 Class: CL A

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

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

Q1 2014
Shares 11,100 Value ($000) $326 Avg Close — Range —
Q4 2013
Shares 49,200 Value ($000) $1,473 Avg Close — Range —
Q3 2013
Shares 49,200 Value ($000) $1,415 Avg Close — Range —
Q2 2013
Shares 10,900 Value ($000) $285 Avg Close — Range —