RUBICON TECHNOLOGY INC

CUSIP: 78112T107 Class: COM

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

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

Q2 2014
Shares 21,330 Value ($000) $187 Avg Close — Range —
Q3 2013
Shares 490,518 Value ($000) $5,940 Avg Close — Range —
Q2 2013
Shares 251,997 Value ($000) $2,008 Avg Close — Range —