PDF SOLUTIONS INC

Ticker: PDFS CUSIP: 693282105 Class: Common Stock

PIPER SANDLER & CO.'s Holding History (CIK: 0000724683)

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

Q3 2015

Shares 25,000 Value ($000) $250 Avg Close $12.57 Range $9.91 - $16.45

Q1 2015

Shares 27,500 Value ($000) $493 Avg Close $17.39 Range $13.31 - $18.80

Q4 2014

Shares 20,000 Value ($000) $297 Avg Close $13.09 Range $11.62 - $15.24

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2015	25,000	$250	$12.57	$9.91 - $16.45
Q1 2015	27,500	$493	$17.39	$13.31 - $18.80
Q4 2014	20,000	$297	$13.09	$11.62 - $15.24