PARKERVISION INC

CUSIP: 701354102 Class: CMN

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q1 2015
Shares 178,440 Value ($000) $148 Avg Close — Range —
Q4 2014
Shares 178,440 Value ($000) $162 Avg Close — Range —
Q3 2014
Shares 177,677 Value ($000) $203 Avg Close — Range —
Q2 2014
Shares 176,563 Value ($000) $261 Avg Close — Range —
Q1 2014
Shares 160,263 Value ($000) $769 Avg Close — Range —
Q4 2013
Shares 160,263 Value ($000) $729 Avg Close — Range —
Q3 2013
Shares 158,363 Value ($000) $531 Avg Close — Range —
Q2 2013
Shares 154,263 Value ($000) $702 Avg Close — Range —
Q1 2013
Shares 139,022 Value ($000) $510 Avg Close — Range —