MESA LABS INC

Ticker: MLAB CUSIP: 59064R109 Class: Common Stock

CHARLES SCHWAB INVESTMENT MANAGEMENT INC's Holding History (CIK: 0000884546)

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

Q4 2025

Shares 61,913 Value ($000) $4,860 Avg Close $75.96 Range $66.39 - $83.18

Q3 2025

Shares 54,605 Value ($000) $3,659 Avg Close $71.72 Range $55.21 - $103.28

Q2 2025

Shares 61,764 Value ($000) $5,819 Avg Close $109.15 Range $87.42 - $130.43

Q1 2025

Shares 65,464 Value ($000) $7,768 Avg Close $135.40 Range $114.00 - $154.03

Q4 2024

Shares 62,589 Value ($000) $8,254 Avg Close $121.79 Range $97.08 - $139.36

Q3 2024

Shares 62,609 Value ($000) $8,130 Avg Close $116.53 Range $85.22 - $139.82

Q2 2024

Shares 45,159 Value ($000) $3,918 Avg Close $103.60 Range $82.88 - $122.43

Q1 2024

Shares 44,278 Value ($000) $4,859 Avg Close $99.55 Range $87.54 - $114.48

Q4 2023

Shares 41,392 Value ($000) $4,337 Avg Close $96.12 Range $81.68 - $118.22

Q3 2023

Shares 40,498 Value ($000) $4,255 Avg Close $126.18 Range $101.78 - $143.38

Q2 2023

Shares 38,787 Value ($000) $4,984 Avg Close $149.94 Range $122.07 - $184.65

Q1 2023

Shares 38,533 Value ($000) $6,733 Avg Close $176.11 Range $151.50 - $202.76

Q4 2022

Shares 38,193 Value ($000) $6,348 Avg Close $153.87 Range $112.11 - $186.80

Q3 2022

Shares 36,846 Value ($000) $5,190 Avg Close $178.97 Range $133.61 - $212.24

Q2 2022

Shares 37,031 Value ($000) $7,553 Avg Close $214.62 Range $174.88 - $258.13

Q1 2022

Shares 37,407 Value ($000) $9,535 Avg Close $266.04 Range $239.75 - $326.08

Q4 2021

Shares 36,495 Value ($000) $11,975 Avg Close $307.32 Range $285.14 - $326.54

Q3 2021

Shares 35,721 Value ($000) $10,801 Avg Close $278.11 Range $257.33 - $318.62

Q2 2021

Shares 33,573 Value ($000) $9,104 Avg Close $248.03 Range $227.68 - $268.74

Q1 2021

Shares 32,895 Value ($000) $8,010 Avg Close $268.89 Range $231.88 - $300.91

Q4 2020

Shares 31,907 Value ($000) $9,146 Avg Close $268.73 Range $247.92 - $285.33

Q3 2020

Shares 31,289 Value ($000) $7,972 Avg Close $231.93 Range $202.54 - $252.24

Q2 2020

Shares 27,030 Value ($000) $5,861 Avg Close $224.85 Range $197.47 - $262.51

Q1 2020

Shares 25,045 Value ($000) $5,663 Avg Close $240.43 Range $177.40 - $264.58

Q4 2019

Shares 24,707 Value ($000) $6,162 Avg Close $228.21 Range $201.87 - $248.54

Q3 2019

Shares 23,889 Value ($000) $5,681 Avg Close $225.06 Range $200.11 - $261.29

Q2 2019

Shares 20,082 Value ($000) $4,907 Avg Close $226.56 Range $176.37 - $256.07

Q1 2019

Shares 19,835 Value ($000) $4,572 Avg Close $219.75 Range $195.71 - $235.22

Q4 2018

Shares 18,717 Value ($000) $3,901 Avg Close $189.46 Range $162.53 - $218.23

Q3 2018

Shares 18,831 Value ($000) $3,496 Avg Close $195.39 Range $165.11 - $218.31

Q2 2018

Shares 17,253 Value ($000) $3,642 Avg Close $169.69 Range $134.32 - $207.68

Q1 2018

Shares 15,491 Value ($000) $2,300 Avg Close $132.07 Range $118.48 - $150.10

Q4 2017

Shares 14,223 Value ($000) $1,768 Avg Close $135.32 Range $118.50 - $157.82

Q3 2017

Shares 11,976 Value ($000) $1,789 Avg Close $136.33 Range $123.49 - $150.04

Q2 2017

Shares 4,800 Value ($000) $688 Avg Close $137.24 Range $116.47 - $164.05

Q1 2017

Shares 4,800 Value ($000) $589 Avg Close $118.09 Range $109.46 - $123.38

Q4 2016

Shares 4,800 Value ($000) $590 Avg Close $120.22 Range $105.07 - $132.08

Q3 2016

Shares 4,800 Value ($000) $549 Avg Close $109.60 Range $98.18 - $123.04

Q2 2016

Shares 4,800 Value ($000) $591 Avg Close $103.44 Range $88.28 - $126.77

Q1 2016

Shares 4,800 Value ($000) $463 Avg Close $86.42 Range $73.77 - $101.55

Q4 2015

Shares 4,800 Value ($000) $478 Avg Close $102.36 Range $85.94 - $114.35

Q3 2015

Shares 3,600 Value ($000) $402 Avg Close $100.98 Range $82.67 - $120.40

Q2 2015

Shares 3,600 Value ($000) $321 Avg Close $80.63 Range $64.55 - $88.64

Q1 2015

Shares 3,600 Value ($000) $260 Avg Close $70.91 Range $65.28 - $76.95

Q4 2014

Shares 3,600 Value ($000) $279 Avg Close $69.59 Range $54.13 - $80.65

Q3 2014

Shares 3,600 Value ($000) $209 Avg Close $68.77 Range $51.84 - $82.01

Q2 2014

Shares 3,600 Value ($000) $303 Avg Close $78.24 Range $70.63 - $86.28

Q1 2014

Shares 3,600 Value ($000) $325 Avg Close $80.28 Range $67.42 - $90.75

Q4 2013

Shares 3,600 Value ($000) $283 Avg Close $68.72 Range $61.20 - $78.13

Q3 2013

Shares 3,600 Value ($000) $249 Avg Close $60.15 Range $50.50 - $68.22

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	61,913	$4,860	$75.96	$66.39 - $83.18
Q3 2025	54,605	$3,659	$71.72	$55.21 - $103.28
Q2 2025	61,764	$5,819	$109.15	$87.42 - $130.43
Q1 2025	65,464	$7,768	$135.40	$114.00 - $154.03
Q4 2024	62,589	$8,254	$121.79	$97.08 - $139.36
Q3 2024	62,609	$8,130	$116.53	$85.22 - $139.82
Q2 2024	45,159	$3,918	$103.60	$82.88 - $122.43
Q1 2024	44,278	$4,859	$99.55	$87.54 - $114.48
Q4 2023	41,392	$4,337	$96.12	$81.68 - $118.22
Q3 2023	40,498	$4,255	$126.18	$101.78 - $143.38
Q2 2023	38,787	$4,984	$149.94	$122.07 - $184.65
Q1 2023	38,533	$6,733	$176.11	$151.50 - $202.76
Q4 2022	38,193	$6,348	$153.87	$112.11 - $186.80
Q3 2022	36,846	$5,190	$178.97	$133.61 - $212.24
Q2 2022	37,031	$7,553	$214.62	$174.88 - $258.13
Q1 2022	37,407	$9,535	$266.04	$239.75 - $326.08
Q4 2021	36,495	$11,975	$307.32	$285.14 - $326.54
Q3 2021	35,721	$10,801	$278.11	$257.33 - $318.62
Q2 2021	33,573	$9,104	$248.03	$227.68 - $268.74
Q1 2021	32,895	$8,010	$268.89	$231.88 - $300.91
Q4 2020	31,907	$9,146	$268.73	$247.92 - $285.33
Q3 2020	31,289	$7,972	$231.93	$202.54 - $252.24
Q2 2020	27,030	$5,861	$224.85	$197.47 - $262.51
Q1 2020	25,045	$5,663	$240.43	$177.40 - $264.58
Q4 2019	24,707	$6,162	$228.21	$201.87 - $248.54
Q3 2019	23,889	$5,681	$225.06	$200.11 - $261.29
Q2 2019	20,082	$4,907	$226.56	$176.37 - $256.07
Q1 2019	19,835	$4,572	$219.75	$195.71 - $235.22
Q4 2018	18,717	$3,901	$189.46	$162.53 - $218.23
Q3 2018	18,831	$3,496	$195.39	$165.11 - $218.31
Q2 2018	17,253	$3,642	$169.69	$134.32 - $207.68
Q1 2018	15,491	$2,300	$132.07	$118.48 - $150.10
Q4 2017	14,223	$1,768	$135.32	$118.50 - $157.82
Q3 2017	11,976	$1,789	$136.33	$123.49 - $150.04
Q2 2017	4,800	$688	$137.24	$116.47 - $164.05
Q1 2017	4,800	$589	$118.09	$109.46 - $123.38
Q4 2016	4,800	$590	$120.22	$105.07 - $132.08
Q3 2016	4,800	$549	$109.60	$98.18 - $123.04
Q2 2016	4,800	$591	$103.44	$88.28 - $126.77
Q1 2016	4,800	$463	$86.42	$73.77 - $101.55
Q4 2015	4,800	$478	$102.36	$85.94 - $114.35
Q3 2015	3,600	$402	$100.98	$82.67 - $120.40
Q2 2015	3,600	$321	$80.63	$64.55 - $88.64
Q1 2015	3,600	$260	$70.91	$65.28 - $76.95
Q4 2014	3,600	$279	$69.59	$54.13 - $80.65
Q3 2014	3,600	$209	$68.77	$51.84 - $82.01
Q2 2014	3,600	$303	$78.24	$70.63 - $86.28
Q1 2014	3,600	$325	$80.28	$67.42 - $90.75
Q4 2013	3,600	$283	$68.72	$61.20 - $78.13
Q3 2013	3,600	$249	$60.15	$50.50 - $68.22