QUANTUM CORP

CUSIP: 747906501 Class: COM NEW

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

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

Q4 2018
Shares 211,657 Value ($000) $423 Avg Close — Range —
Q3 2018
Shares 19,150 Value ($000) $46 Avg Close — Range —