ADTRAN INC

CUSIP: 00738A106 Class: COMMON STOCK

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q1 2019
Shares 696,574 Value ($000) $9,543 Avg Close — Range —
Q4 2018
Shares 1,406,711 Value ($000) $15,108 Avg Close — Range —
Q3 2018
Shares 1,129,251 Value ($000) $19,931 Avg Close — Range —
Q2 2018
Shares 1,022,413 Value ($000) $15,184 Avg Close — Range —
Q1 2018
Shares 737,581 Value ($000) $11,469 Avg Close — Range —