RUBICON TECHNOLOGY INC

CUSIP: 78112T107 Class: COM

ARIEL INVESTMENTS, LLC's Holding History (CIK: 0000936753)

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

Q1 2017
Shares 2,467,591 Value ($000) $2,056 Avg Close — Range —
Q4 2016
Shares 3,251,726 Value ($000) $1,951 Avg Close — Range —
Q3 2016
Shares 3,760,729 Value ($000) $2,370 Avg Close — Range —
Q2 2016
Shares 3,754,180 Value ($000) $2,553 Avg Close — Range —
Q1 2016
Shares 4,420,918 Value ($000) $3,227 Avg Close — Range —
Q4 2015
Shares 4,767,365 Value ($000) $5,435 Avg Close — Range —
Q3 2015
Shares 5,138,765 Value ($000) $5,293 Avg Close — Range —
Q2 2015
Shares 4,979,260 Value ($000) $12,100 Avg Close — Range —
Q1 2015
Shares 4,624,107 Value ($000) $18,219 Avg Close — Range —
Q4 2014
Shares 3,809,373 Value ($000) $17,409 Avg Close — Range —
Q3 2014
Shares 2,206,147 Value ($000) $9,376 Avg Close — Range —
Q2 2014
Shares 1,349,207 Value ($000) $11,806 Avg Close — Range —
Q1 2014
Shares 761,517 Value ($000) $8,598 Avg Close — Range —
Q4 2013
Shares 1,942,435 Value ($000) $19,327 Avg Close — Range —
Q3 2013
Shares 407,436 Value ($000) $4,934 Avg Close — Range —
Q2 2013
Shares 1,417,420 Value ($000) $11,297 Avg Close — Range —