PDF SOLUTIONS INC

Ticker: PDFS CUSIP: 693282105 Class: Common Stock

OBERWEIS ASSET MANAGEMENT INC/'s Holding History (CIK: 0000937886)

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

Q4 2023

Shares 69,500 Value ($000) $2,234 Avg Close $30.32 Range $26.12 - $34.09

Q3 2023

Shares 66,000 Value ($000) $2,138 Avg Close $38.29 Range $30.80 - $48.02

Q2 2023

Shares 54,500 Value ($000) $2,458 Avg Close $40.80 Range $32.25 - $45.80

Q1 2023

Shares 43,000 Value ($000) $1,823 Avg Close $35.04 Range $27.23 - $42.50

Q4 2022

Shares 30,100 Value ($000) $858 Avg Close $27.01 Range $21.36 - $32.56

Q3 2013

Shares 38,300 Value ($000) $813 Avg Close $20.57 Range $18.09 - $22.20

Q2 2013

Shares 53,600 Value ($000) $988 Avg Close $17.41 Range $14.95 - $19.03

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2023	69,500	$2,234	$30.32	$26.12 - $34.09
Q3 2023	66,000	$2,138	$38.29	$30.80 - $48.02
Q2 2023	54,500	$2,458	$40.80	$32.25 - $45.80
Q1 2023	43,000	$1,823	$35.04	$27.23 - $42.50
Q4 2022	30,100	$858	$27.01	$21.36 - $32.56
Q3 2013	38,300	$813	$20.57	$18.09 - $22.20
Q2 2013	53,600	$988	$17.41	$14.95 - $19.03