MESA LABS INC

Ticker: MLAB CUSIP: 59064R109 Class: Common Stock

SEI INVESTMENTS CO's Holding History (CIK: 0000350894)

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

Q4 2025

Shares 8,371 Value ($000) $657 Avg Close $75.96 Range $66.39 - $83.18

Q3 2025

Shares 5,525 Value ($000) $370 Avg Close $71.72 Range $55.21 - $103.28

Q2 2025

Shares 4,362 Value ($000) $411 Avg Close $109.15 Range $87.42 - $130.43

Q1 2025

Shares 5,416 Value ($000) $643 Avg Close $135.40 Range $114.00 - $154.03

Q4 2024

Shares 5,411 Value ($000) $714 Avg Close $121.79 Range $97.08 - $139.36

Q3 2024

Shares 1,563 Value ($000) $203 Avg Close $116.53 Range $85.22 - $139.82

Q4 2023

Shares 2,138 Value ($000) $224 Avg Close $96.12 Range $81.68 - $118.22

Q3 2023

Shares 6,499 Value ($000) $683 Avg Close $126.18 Range $101.78 - $143.38

Q2 2023

Shares 7,027 Value ($000) $903 Avg Close $149.94 Range $122.07 - $184.65

Q1 2023

Shares 9,334 Value ($000) $1,631 Avg Close $176.11 Range $151.50 - $202.76

Q4 2022

Shares 7,297 Value ($000) $1,213 Avg Close $153.87 Range $112.11 - $186.80

Q3 2022

Shares 8,439 Value ($000) $1,188 Avg Close $178.97 Range $133.61 - $212.24

Q2 2022

Shares 8,707 Value ($000) $1,776 Avg Close $214.62 Range $174.88 - $258.13

Q1 2022

Shares 5,382 Value ($000) $1,372 Avg Close $266.04 Range $239.75 - $326.08

Q4 2021

Shares 7,797 Value ($000) $2,558 Avg Close $307.32 Range $285.14 - $326.54

Q3 2021

Shares 8,560 Value ($000) $2,588 Avg Close $278.11 Range $257.33 - $318.62

Q2 2021

Shares 6,300 Value ($000) $1,708 Avg Close $248.03 Range $227.68 - $268.74

Q1 2021

Shares 5,950 Value ($000) $1,449 Avg Close $268.89 Range $231.88 - $300.91

Q4 2020

Shares 7,545 Value ($000) $2,163 Avg Close $268.73 Range $247.92 - $285.33

Q3 2020

Shares 7,599 Value ($000) $1,936 Avg Close $231.93 Range $202.54 - $252.24

Q2 2020

Shares 7,451 Value ($000) $1,615 Avg Close $224.85 Range $197.47 - $262.51

Q1 2020

Shares 3,237 Value ($000) $732 Avg Close $240.43 Range $177.40 - $264.58

Q4 2019

Shares 1,175 Value ($000) $293 Avg Close $228.21 Range $201.87 - $248.54

Q2 2017

Shares 1 Value ($000) $0 Avg Close $137.24 Range $116.47 - $164.05

Q4 2014

Shares 13 Value ($000) $1 Avg Close $69.59 Range $54.13 - $80.65

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	8,371	$657	$75.96	$66.39 - $83.18
Q3 2025	5,525	$370	$71.72	$55.21 - $103.28
Q2 2025	4,362	$411	$109.15	$87.42 - $130.43
Q1 2025	5,416	$643	$135.40	$114.00 - $154.03
Q4 2024	5,411	$714	$121.79	$97.08 - $139.36
Q3 2024	1,563	$203	$116.53	$85.22 - $139.82
Q4 2023	2,138	$224	$96.12	$81.68 - $118.22
Q3 2023	6,499	$683	$126.18	$101.78 - $143.38
Q2 2023	7,027	$903	$149.94	$122.07 - $184.65
Q1 2023	9,334	$1,631	$176.11	$151.50 - $202.76
Q4 2022	7,297	$1,213	$153.87	$112.11 - $186.80
Q3 2022	8,439	$1,188	$178.97	$133.61 - $212.24
Q2 2022	8,707	$1,776	$214.62	$174.88 - $258.13
Q1 2022	5,382	$1,372	$266.04	$239.75 - $326.08
Q4 2021	7,797	$2,558	$307.32	$285.14 - $326.54
Q3 2021	8,560	$2,588	$278.11	$257.33 - $318.62
Q2 2021	6,300	$1,708	$248.03	$227.68 - $268.74
Q1 2021	5,950	$1,449	$268.89	$231.88 - $300.91
Q4 2020	7,545	$2,163	$268.73	$247.92 - $285.33
Q3 2020	7,599	$1,936	$231.93	$202.54 - $252.24
Q2 2020	7,451	$1,615	$224.85	$197.47 - $262.51
Q1 2020	3,237	$732	$240.43	$177.40 - $264.58
Q4 2019	1,175	$293	$228.21	$201.87 - $248.54
Q2 2017	1	$0	$137.24	$116.47 - $164.05
Q4 2014	13	$1	$69.59	$54.13 - $80.65