ADTRAN INC

CUSIP: 00738A106 Class: COMMON STOCK

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

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

Q1 2015
Shares 616,692 Value ($000) $11,514 Avg Close — Range —
Q4 2014
Shares 607,303 Value ($000) $13,239 Avg Close — Range —
Q3 2014
Shares 579,282 Value ($000) $11,893 Avg Close — Range —
Q2 2014
Shares 573,435 Value ($000) $12,937 Avg Close — Range —
Q1 2014
Shares 605,420 Value ($000) $14,778 Avg Close — Range —
Q4 2013
Shares 520,199 Value ($000) $14,051 Avg Close — Range —
Q3 2013
Shares 467,740 Value ($000) $12,461 Avg Close — Range —
Q2 2013
Shares 466,295 Value ($000) $11,480 Avg Close — Range —