QUANTUM CORP

CUSIP: 747906501 Class: COM NEW

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

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

Q3 2020
Shares 13,100 Value ($000) $60 Avg Close — Range —
Q2 2020
Shares 15,500 Value ($000) $60 Avg Close — Range —
Q2 2018
Shares 16,370 Value ($000) $36 Avg Close — Range —
Q1 2018
Shares 24,290 Value ($000) $88 Avg Close — Range —
Q4 2017
Shares 24,290 Value ($000) $137 Avg Close — Range —