PARKERVISION INC

Ticker: PRKR CUSIP: 701354300 Class: USD

TWO SIGMA SECURITIES, LLC's Holding History (CIK: 0001450144)

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

Q1 2018

Shares 20,403 Value ($000) $16 Avg Close $0.94 Range $0.76 - $1.25

Q4 2017

Shares 26,889 Value ($000) $29 Avg Close $1.34 Range $1.02 - $1.73

Q2 2017

Shares 17,168 Value ($000) $31 Avg Close $2.14 Range $1.75 - $2.72

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	20,403	$16	$0.94	$0.76 - $1.25
Q4 2017	26,889	$29	$1.34	$1.02 - $1.73
Q2 2017	17,168	$31	$2.14	$1.75 - $2.72