QUANTUM CORP

CUSIP: 747906204 Class: CMN

ALLIANCEBERNSTEIN L.P.'s Holding History (CIK: 0001109448)

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

Q1 2016
Shares 29,331 Value ($000) $18 Avg Close — Range —
Q4 2015
Shares 29,331 Value ($000) $27 Avg Close — Range —
Q3 2015
Shares 29,331 Value ($000) $20 Avg Close — Range —
Q2 2015
Shares 52,381 Value ($000) $88 Avg Close — Range —
Q1 2015
Shares 59,081 Value ($000) $95 Avg Close — Range —
Q4 2014
Shares 45,281 Value ($000) $80 Avg Close — Range —
Q3 2014
Shares 45,281 Value ($000) $53 Avg Close — Range —
Q2 2014
Shares 45,281 Value ($000) $55 Avg Close — Range —
Q1 2014
Shares 39,768 Value ($000) $49 Avg Close — Range —
Q4 2013
Shares 132,468 Value ($000) $159 Avg Close — Range —
Q3 2013
Shares 260,568 Value ($000) $360 Avg Close — Range —
Q2 2013
Shares 301,781 Value ($000) $413 Avg Close — Range —