Mesa Laboratories, Inc.

Historical 13F Holders

Symbol
MLAB
CUSIP
59064R109
All holders as of
Q2 2026
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Each filer's latest filing for 59064R109 since 12/18/2024, largest first.

Filer % of Class Filed
Conestoga Capital Advisors, LLC 13G/A
11.4% 1/10/2025
Event 12/31/2024
Long Path Smaller Companies Fund, LP 13G/A
8.6% 7/7/2026
Event 6/30/2026
Wasatch Advisors LP 13G 6.9% 10/9/2026
Event 9/30/2026
BlackRock, Inc. 13G/A 6.9% 10/2/2025
Event 9/30/2025
Under 5%, checked the "5 percent or less" box, or amended by a later filing (2)
Royce & Associates LP 13G/A 4.99% 4/30/2025
Event 3/31/2025
Vanguard Group Inc 13G/A 0% 3/27/2026
Event 3/13/2026

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 4 740 $96.2 k
2026 Q2 161 5.04 M $501 M
2026 Q1 162 4.83 M $427 M
2025 Q4 160 4.74 M $372 M
2025 Q3 143 4.99 M $334 M
2025 Q2 159 5.24 M $493 M
2025 Q1 156 5.17 M $613 M
2024 Q4 163 5.12 M $674 M
2024 Q3 170 4.90 M $634 M
2024 Q2 159 5.13 M $446 M
2024 Q1 160 5.39 M $591 M
2023 Q4 166 5.20 M $545 M
2023 Q3 159 4.92 M $515 M
2023 Q2 164 4.88 M $630 M
2023 Q1 162 5.02 M $879 M
2022 Q4 165 5.29 M $881 M
2022 Q3 167 4.84 M $681 M
2022 Q2 176 4.91 M $1.00 B
2022 Q1 177 4.86 M $1.24 B
2021 Q4 181 4.80 M $1.57 B
2021 Q3 173 4.77 M $1.44 B
2021 Q2 160 4.71 M $1.28 B
2021 Q1 175 4.61 M $1.12 B
2020 Q4 180 4.83 M $1.38 B
2020 Q3 156 4.78 M $1.22 B
2020 Q2 171 4.67 M $1.01 B
2020 Q1 149 4.16 M $942 M
2019 Q4 154 4.10 M $1.02 B
2019 Q3 146 3.98 M $945 M
2019 Q2 128 3.55 M $867 M
2019 Q1 125 2.85 M $657 M
2018 Q4 111 2.99 M $623 M
2018 Q3 114 2.74 M $508 M
2018 Q2 108 2.78 M $586 M
2018 Q1 92 2.81 M $417 M
2017 Q4 93 2.72 M $338 M
2017 Q3 101 2.64 M $394 M
2017 Q2 90 2.52 M $362 M
2017 Q1 89 2.43 M $298 M
2016 Q4 87 2.39 M $293 M
2016 Q3 81 2.32 M $265 M
2016 Q2 81 2.26 M $278 M
2016 Q1 72 2.32 M $224 M
2015 Q4 70 2.20 M $219 M
2015 Q3 65 2.14 M $238 M
2015 Q2 69 2.09 M $186 M
2015 Q1 61 2.03 M $146 M
2014 Q4 60 1.95 M $151 M
2014 Q3 59 1.72 M $99.5 M
2014 Q2 67 1.90 M $160 M
2014 Q1 66 1.84 M $166 M