RUBICON TECHNOLOGY INC

CUSIP: 78112T107 Class: COM

PRICE T ROWE ASSOCIATES INC /MD/'s Holding History (CIK: 0000080255)

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

Q3 2016
Shares 66,600 Value ($000) $42 Avg Close — Range —
Q2 2016
Shares 66,600 Value ($000) $45 Avg Close — Range —
Q1 2016
Shares 66,600 Value ($000) $49 Avg Close — Range —
Q4 2015
Shares 66,600 Value ($000) $76 Avg Close — Range —
Q3 2015
Shares 66,600 Value ($000) $69 Avg Close — Range —
Q2 2015
Shares 61,600 Value ($000) $150 Avg Close — Range —
Q1 2015
Shares 59,100 Value ($000) $233 Avg Close — Range —
Q4 2014
Shares 55,600 Value ($000) $254 Avg Close — Range —
Q3 2014
Shares 35,300 Value ($000) $150 Avg Close — Range —
Q2 2014
Shares 22,600 Value ($000) $198 Avg Close — Range —
Q1 2014
Shares 22,600 Value ($000) $255 Avg Close — Range —
Q4 2013
Shares 22,600 Value ($000) $225 Avg Close — Range —
Q3 2013
Shares 11,900 Value ($000) $144 Avg Close — Range —
Q2 2013
Shares 11,900 Value ($000) $95 Avg Close — Range —