MESA LABS INC

Ticker: MLAB CUSIP: 59064R109 Class: Common Stock

Select Equity Group, L.P.'s Holding History (CIK: 0001592643)

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

Q4 2025

Shares 206,435 Value ($000) $16,205 Avg Close $75.96 Range $66.39 - $83.18

Q3 2025

Shares 126,715 Value ($000) $8,491 Avg Close $71.72 Range $55.21 - $103.28

Q2 2025

Shares 102,198 Value ($000) $9,629 Avg Close $109.15 Range $87.42 - $130.43

Q1 2025

Shares 73,897 Value ($000) $8,769 Avg Close $135.40 Range $114.00 - $154.03

Q4 2024

Shares 13,711 Value ($000) $1,808 Avg Close $121.79 Range $97.08 - $139.36

Q3 2024

Shares 13,027 Value ($000) $1,692 Avg Close $116.53 Range $85.22 - $139.82

Q2 2024

Shares 8,273 Value ($000) $718 Avg Close $103.60 Range $82.88 - $122.43

Q1 2024

Shares 9,371 Value ($000) $1,028 Avg Close $99.55 Range $87.54 - $114.48

Q4 2023

Shares 9,371 Value ($000) $982 Avg Close $96.12 Range $81.68 - $118.22

Q3 2023

Shares 9,653 Value ($000) $1,014 Avg Close $126.18 Range $101.78 - $143.38

Q2 2023

Shares 12,672 Value ($000) $1,628 Avg Close $149.94 Range $122.07 - $184.65

Q1 2023

Shares 2,511 Value ($000) $439 Avg Close $176.11 Range $151.50 - $202.76

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	206,435	$16,205	$75.96	$66.39 - $83.18
Q3 2025	126,715	$8,491	$71.72	$55.21 - $103.28
Q2 2025	102,198	$9,629	$109.15	$87.42 - $130.43
Q1 2025	73,897	$8,769	$135.40	$114.00 - $154.03
Q4 2024	13,711	$1,808	$121.79	$97.08 - $139.36
Q3 2024	13,027	$1,692	$116.53	$85.22 - $139.82
Q2 2024	8,273	$718	$103.60	$82.88 - $122.43
Q1 2024	9,371	$1,028	$99.55	$87.54 - $114.48
Q4 2023	9,371	$982	$96.12	$81.68 - $118.22
Q3 2023	9,653	$1,014	$126.18	$101.78 - $143.38
Q2 2023	12,672	$1,628	$149.94	$122.07 - $184.65
Q1 2023	2,511	$439	$176.11	$151.50 - $202.76