RUBICON TECHNOLOGY INC

CUSIP: 78112T107 Class: COM

MASSACHUSETTS FINANCIAL SERVICES CO /MA/'s Holding History (CIK: 0000912938)

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

Q2 2015
Shares 265,928 Value ($000) $646,205 Avg Close — Range —
Q1 2015
Shares 499,906 Value ($000) $1,969,630 Avg Close — Range —
Q4 2014
Shares 497,299 Value ($000) $2,272,656 Avg Close — Range —
Q3 2014
Shares 648,767 Value ($000) $2,757 Avg Close — Range —
Q2 2014
Shares 3,305,272 Value ($000) $28,921 Avg Close — Range —
Q1 2014
Shares 2,932,683 Value ($000) $33,109,991 Avg Close — Range —
Q4 2013
Shares 2,932,493 Value ($000) $29,178,306 Avg Close — Range —
Q3 2013
Shares 2,061,273 Value ($000) $24,962,016 Avg Close — Range —