QUANTUM CORP

CUSIP: 747906204 Class: CMN

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

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

Q3 2015
Shares 356,100 Value ($000) $248 Avg Close — Range —
Q2 2015
Shares 368,878 Value ($000) $619 Avg Close — Range —
Q1 2015
Shares 368,878 Value ($000) $590 Avg Close — Range —
Q4 2014
Shares 148,400 Value ($000) $261 Avg Close — Range —
Q4 2013
Shares 1,175,100 Value ($000) $1,410 Avg Close — Range —
Q3 2013
Shares 1,175,100 Value ($000) $1,622 Avg Close — Range —
Q2 2013
Shares 1,175,100 Value ($000) $1,610 Avg Close — Range —