QUANTUM CORP

CUSIP: 747906204 Class: CMN

Potomac Capital Management, Inc.'s Holding History (CIK: 0001418746)

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

Q3 2015
Shares 1,202,500 Value ($000) $839 Avg Close — Range —
Q2 2015
Shares 1,134,600 Value ($000) $1,906 Avg Close — Range —
Q1 2015
Shares 1,547,523 Value ($000) $2,476 Avg Close — Range —
Q4 2014
Shares 1,525,023 Value ($000) $2,684 Avg Close — Range —
Q3 2014
Shares 1,837,723 Value ($000) $2,132 Avg Close — Range —
Q2 2014
Shares 1,922,923 Value ($000) $2,346 Avg Close — Range —
Q1 2014
Shares 3,832,023 Value ($000) $4,675 Avg Close — Range —
Q4 2013
Shares 3,306,450 Value ($000) $3,968 Avg Close — Range —