MESA LABS INC

Ticker: MLAB CUSIP: 59064R109 Class: Common Stock

OPPENHEIMER & CO INC's Holding History (CIK: 0000822581)

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

Q2 2014

Shares 2,475 Value ($000) $208 Avg Close $78.24 Range $70.63 - $86.28

Q1 2014

Shares 2,475 Value ($000) $223 Avg Close $80.28 Range $67.42 - $90.75

Q4 2013

Shares 2,556 Value ($000) $201 Avg Close $68.72 Range $61.20 - $78.13

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2014	2,475	$208	$78.24	$70.63 - $86.28
Q1 2014	2,475	$223	$80.28	$67.42 - $90.75
Q4 2013	2,556	$201	$68.72	$61.20 - $78.13