RUBICON TECHNOLOGY INC

CUSIP: 78112T107 Class: COM

TOCQUEVILLE ASSET MANAGEMENT L.P.'s Holding History (CIK: 0000883961)

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

Q1 2015
Shares 135,313 Value ($000) $533 Avg Close — Range —
Q4 2014
Shares 464,550 Value ($000) $2,123 Avg Close — Range —
Q3 2014
Shares 615,514 Value ($000) $2,616 Avg Close — Range —
Q2 2014
Shares 624,625 Value ($000) $5,465 Avg Close — Range —
Q1 2014
Shares 496,303 Value ($000) $5,603 Avg Close — Range —
Q4 2013
Shares 492,976 Value ($000) $4,905 Avg Close — Range —
Q3 2013
Shares 503,054 Value ($000) $6,092 Avg Close — Range —
Q2 2013
Shares 745,859 Value ($000) $5,944 Avg Close — Range —