ADTRAN INC

CUSIP: 00738A106 Class: COMMON STOCK

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

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

Q3 2014
Shares 26,000 Value ($000) $534 Avg Close — Range —
Q2 2014
Shares 26,600 Value ($000) $600 Avg Close — Range —
Q1 2014
Shares 26,700 Value ($000) $652 Avg Close — Range —
Q4 2013
Shares 27,000 Value ($000) $729 Avg Close — Range —
Q3 2013
Shares 27,100 Value ($000) $722 Avg Close — Range —
Q2 2013
Shares 27,300 Value ($000) $672 Avg Close — Range —