RUBICON TECHNOLOGY INC

CUSIP: 78112T107 Class: COM

CHARLES SCHWAB INVESTMENT MANAGEMENT INC's Holding History (CIK: 0000884546)

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

Q1 2015
Shares 32,500 Value ($000) $129 Avg Close — Range —
Q4 2014
Shares 32,500 Value ($000) $149 Avg Close — Range —
Q3 2014
Shares 32,500 Value ($000) $139 Avg Close — Range —
Q2 2014
Shares 32,500 Value ($000) $285 Avg Close — Range —
Q1 2014
Shares 32,500 Value ($000) $367 Avg Close — Range —
Q4 2013
Shares 23,500 Value ($000) $234 Avg Close — Range —
Q3 2013
Shares 23,500 Value ($000) $262 Avg Close — Range —
Q2 2013
Shares 23,500 Value ($000) $199 Avg Close — Range —