ADTRAN INC

CUSIP: 00738A106 Class: COMMON STOCK

OBERWEIS ASSET MANAGEMENT INC/'s Holding History (CIK: 0000937886)

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

Q1 2022
Shares 59,400 Value ($000) $1,096 Avg Close — Range —
Q4 2021
Shares 59,400 Value ($000) $1,356 Avg Close — Range —
Q3 2021
Shares 43,600 Value ($000) $818 Avg Close — Range —
Q2 2021
Shares 39,800 Value ($000) $822 Avg Close — Range —
Q1 2021
Shares 39,800 Value ($000) $664 Avg Close — Range —
Q4 2020
Shares 39,800 Value ($000) $588 Avg Close — Range —
Q3 2020
Shares 39,800 Value ($000) $408 Avg Close — Range —
Q2 2020
Shares 39,800 Value ($000) $435 Avg Close — Range —
Q1 2020
Shares 22,700 Value ($000) $174 Avg Close — Range —
Q2 2016
Shares 36,000 Value ($000) $671 Avg Close — Range —
Q1 2016
Shares 41,000 Value ($000) $829 Avg Close — Range —