PDF SOLUTIONS INC

Ticker: PDFS CUSIP: 693282105 Class: Common Stock

MOODY NATIONAL BANK TRUST DIVISION's Holding History (CIK: 0001092903)

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

Q4 2013

Shares 70,403 Value ($000) $1,804 Avg Close $22.99 Range $20.12 - $25.90

Q3 2013

Shares 43,871 Value ($000) $931 Avg Close $20.57 Range $18.09 - $22.20

Q2 2013

Shares 43,871 Value ($000) $809 Avg Close $17.41 Range $14.95 - $19.03

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2013	70,403	$1,804	$22.99	$20.12 - $25.90
Q3 2013	43,871	$931	$20.57	$18.09 - $22.20
Q2 2013	43,871	$809	$17.41	$14.95 - $19.03