QUANTUM CORP

CUSIP: 747906501 Class: COM NEW

Walleye Trading LLC's Holding History (CIK: 0001388391)

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

Q1 2018
Shares 40,842 Value ($000) $149 Avg Close — Range —
Q4 2017
Shares 56,142 Value ($000) $316 Avg Close — Range —
Q3 2017
Shares 19,216 Value ($000) $118 Avg Close — Range —