ADTRAN INC

CUSIP: 00738A106 Class: COMMON STOCK

AMERICAN CENTURY COMPANIES INC's Holding History (CIK: 0000748054)

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

Q4 2014
Shares 11,344 Value ($000) $247 Avg Close — Range —
Q3 2014
Shares 18,846 Value ($000) $387 Avg Close — Range —
Q2 2014
Shares 18,846 Value ($000) $425 Avg Close — Range —
Q1 2014
Shares 14,762 Value ($000) $360 Avg Close — Range —