QUANTUM CORP

CUSIP: 747906204 Class: CMN

CASTLEARK MANAGEMENT LLC's Holding History (CIK: 0001106832)

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

Q2 2015
Shares 1,760,803 Value ($000) $2,958 Avg Close — Range —
Q1 2015
Shares 2,923,450 Value ($000) $4,678 Avg Close — Range —
Q4 2014
Shares 2,740,050 Value ($000) $4,822 Avg Close — Range —