MESA LABS INC

Ticker: MLAB CUSIP: 59064R109 Class: Common Stock

MASON CAPITAL MANAGEMENT LLC's Holding History (CIK: 0001218735)

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

Q4 2025

Shares 70,300 Value ($000) $5,519 Avg Close $75.96 Range $66.39 - $83.18

Q3 2025

Shares 70,300 Value ($000) $4,711 Avg Close $71.72 Range $55.21 - $103.28

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	70,300	$5,519	$75.96	$66.39 - $83.18
Q3 2025	70,300	$4,711	$71.72	$55.21 - $103.28