ADTRAN INC

CUSIP: 00738A106 Class: COMMON STOCK

Robeco Institutional Asset Management B.V.'s Holding History (CIK: 0001418773)

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

Q4 2017
Shares 73,275 Value ($000) $1,418 Avg Close — Range —
Q3 2017
Shares 73,275 Value ($000) $1,759 Avg Close — Range —
Q2 2017
Shares 73,275 Value ($000) $1,513 Avg Close — Range —
Q1 2017
Shares 73,275 Value ($000) $1,520 Avg Close — Range —
Q4 2016
Shares 73,275 Value ($000) $1,638 Avg Close — Range —
Q3 2016
Shares 73,275 Value ($000) $1,402 Avg Close — Range —
Q2 2016
Shares 146,550 Value ($000) $2,849 Avg Close — Range —
Q1 2016
Shares 73,275 Value ($000) $1,482 Avg Close — Range —