PRISM TECHNOLOGIES GROUP INC

Ticker: PRZM CUSIP: 74273Y100 Class: COM

VANGUARD GROUP INC's Holding History (CIK: 0000102909)

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

Q4 2016

Shares 101,239 Value ($000) $30 Avg Close $0.22 Range $0.14 - $0.60

Q3 2016

Shares 101,239 Value ($000) $21 Avg Close $0.24 Range $0.17 - $0.40

Q2 2016

Shares 101,239 Value ($000) $27 Avg Close $0.29 Range $0.14 - $0.69

Q1 2016

Shares 144,435 Value ($000) $43 Avg Close $0.58 Range $0.24 - $1.01

Q4 2015

Shares 157,863 Value ($000) $158 Avg Close $1.56 Range $0.76 - $2.80

Q3 2015

Shares 157,863 Value ($000) $442 Avg Close $3.01 Range $2.65 - $3.28

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2016	101,239	$30	$0.22	$0.14 - $0.60
Q3 2016	101,239	$21	$0.24	$0.17 - $0.40
Q2 2016	101,239	$27	$0.29	$0.14 - $0.69
Q1 2016	144,435	$43	$0.58	$0.24 - $1.01
Q4 2015	157,863	$158	$1.56	$0.76 - $2.80
Q3 2015	157,863	$442	$3.01	$2.65 - $3.28