RUBICON TECHNOLOGY INC

CUSIP: 78112T107 Class: COM

PIPER SANDLER & CO.'s Holding History (CIK: 0000724683)

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

Q2 2014
Shares 30,000 Value ($000) $263 Avg Close — Range —
Q1 2014
Shares 20,000 Value ($000) $226 Avg Close — Range —