PARKERVISION INC

CUSIP: 701354102 Class: CMN

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q4 2015
Shares 76,844 Value ($000) $18 Avg Close — Range —
Q3 2015
Shares 336,644 Value ($000) $63 Avg Close — Range —
Q2 2015
Shares 404,097 Value ($000) $152 Avg Close — Range —
Q1 2015
Shares 179,827 Value ($000) $149 Avg Close — Range —
Q4 2014
Shares 54,145 Value ($000) $49 Avg Close — Range —
Q3 2014
Shares 26,695 Value ($000) $30 Avg Close — Range —
Q2 2014
Shares 289,331 Value ($000) $428 Avg Close — Range —
Q1 2014
Shares 29,186 Value ($000) $140 Avg Close — Range —
Q4 2013
Shares 163,074 Value ($000) $742 Avg Close — Range —
Q3 2013
Shares 149,354 Value ($000) $500 Avg Close — Range —
Q2 2013
Shares 39,919 Value ($000) $182 Avg Close — Range —