PDF SOLUTIONS INC

Ticker: PDFS CUSIP: 693282105 Class: Common Stock

PERRITT CAPITAL MANAGEMENT INC's Holding History (CIK: 0001279342)

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

Q2 2018

Shares 39,000 Value ($000) $467 Avg Close $11.94 Range $9.62 - $13.84

Q1 2018

Shares 72,111 Value ($000) $821 Avg Close $13.29 Range $11.07 - $16.76

Q4 2017

Shares 172,111 Value ($000) $2,702 Avg Close $16.06 Range $14.12 - $18.48

Q3 2017

Shares 172,111 Value ($000) $2,666 Avg Close $16.12 Range $14.11 - $20.10

Q2 2017

Shares 172,111 Value ($000) $2,831 Avg Close $18.56 Range $16.07 - $23.93

Q1 2017

Shares 162,111 Value ($000) $3,667 Avg Close $22.28 Range $21.03 - $23.40

Q4 2016

Shares 162,111 Value ($000) $3,656 Avg Close $20.91 Range $17.45 - $24.44

Q3 2016

Shares 162,111 Value ($000) $2,946 Avg Close $16.29 Range $13.48 - $18.18

Q2 2016

Shares 299,800 Value ($000) $4,194 Avg Close $13.59 Range $12.09 - $15.25

Q1 2016

Shares 299,800 Value ($000) $4,011 Avg Close $10.95 Range $8.70 - $14.73

Q4 2015

Shares 290,000 Value ($000) $3,144 Avg Close $10.84 Range $9.68 - $11.76

Q3 2015

Shares 230,800 Value ($000) $2,308 Avg Close $12.57 Range $9.91 - $16.45

Q2 2015

Shares 175,800 Value ($000) $2,813 Avg Close $17.19 Range $14.76 - $19.52

Q1 2015

Shares 138,300 Value ($000) $2,478 Avg Close $17.39 Range $13.31 - $18.80

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2018	39,000	$467	$11.94	$9.62 - $13.84
Q1 2018	72,111	$821	$13.29	$11.07 - $16.76
Q4 2017	172,111	$2,702	$16.06	$14.12 - $18.48
Q3 2017	172,111	$2,666	$16.12	$14.11 - $20.10
Q2 2017	172,111	$2,831	$18.56	$16.07 - $23.93
Q1 2017	162,111	$3,667	$22.28	$21.03 - $23.40
Q4 2016	162,111	$3,656	$20.91	$17.45 - $24.44
Q3 2016	162,111	$2,946	$16.29	$13.48 - $18.18
Q2 2016	299,800	$4,194	$13.59	$12.09 - $15.25
Q1 2016	299,800	$4,011	$10.95	$8.70 - $14.73
Q4 2015	290,000	$3,144	$10.84	$9.68 - $11.76
Q3 2015	230,800	$2,308	$12.57	$9.91 - $16.45
Q2 2015	175,800	$2,813	$17.19	$14.76 - $19.52
Q1 2015	138,300	$2,478	$17.39	$13.31 - $18.80