QUANTUM CORP

CUSIP: 747906204 Class: CMN

IRIDIAN ASSET MANAGEMENT LLC/CT's Holding History (CIK: 0001033427)

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

Q3 2015
Shares 102,755 Value ($000) $72 Avg Close — Range —
Q2 2015
Shares 78,460 Value ($000) $132 Avg Close — Range —
Q1 2015
Shares 93,410 Value ($000) $149 Avg Close — Range —
Q4 2014
Shares 93,410 Value ($000) $164 Avg Close — Range —
Q3 2014
Shares 152,700 Value ($000) $177 Avg Close — Range —
Q2 2014
Shares 108,560 Value ($000) $132 Avg Close — Range —
Q1 2014
Shares 153,840 Value ($000) $188 Avg Close — Range —
Q4 2013
Shares 227,550 Value ($000) $273 Avg Close — Range —
Q3 2013
Shares 227,550 Value ($000) $314 Avg Close — Range —
Q2 2013
Shares 290,280 Value ($000) $398 Avg Close — Range —