RUBICON TECHNOLOGY INC

CUSIP: 78112T107 Class: COM

D.A. DAVIDSON & CO.'s Holding History (CIK: 0001080107)

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

Q1 2017
Shares 7,650 Value ($000) $6 Avg Close — Range —
Q4 2016
Shares 3,150 Value ($000) $1 Avg Close — Range —
Q3 2016
Shares 5,450 Value ($000) $3 Avg Close — Range —
Q2 2016
Shares 4,450 Value ($000) $3 Avg Close — Range —
Q1 2016
Shares 11,350 Value ($000) $8 Avg Close — Range —
Q4 2015
Shares 11,350 Value ($000) $12 Avg Close — Range —
Q3 2015
Shares 27,650 Value ($000) $28 Avg Close — Range —
Q2 2015
Shares 48,925 Value ($000) $118 Avg Close — Range —
Q1 2015
Shares 60,325 Value ($000) $237 Avg Close — Range —
Q4 2014
Shares 67,525 Value ($000) $308 Avg Close — Range —
Q3 2014
Shares 210,490 Value ($000) $894 Avg Close — Range —
Q2 2014
Shares 158,490 Value ($000) $1,386 Avg Close — Range —
Q1 2014
Shares 32,475 Value ($000) $366 Avg Close — Range —
Q4 2013
Shares 35,725 Value ($000) $355 Avg Close — Range —
Q3 2013
Shares 44,525 Value ($000) $539 Avg Close — Range —
Q2 2013
Shares 246,650 Value ($000) $1,965 Avg Close — Range —