MESA LABORATORIES INC /CO/ - Common Stock (MLAB) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2014 to Q4 2025

Type / Class
Equity / Common Stock
Symbol
MLAB on Nasdaq
Shares outstanding
5,508,853
Price per share
$78.50
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
4,981,287
Total reported value
$333,781,380
% of total 13F portfolios
0%
Share change
-209,810
Value change
-$17,873,773
Number of holders
138
Price from insider filings
$78.50
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of MESA LABORATORIES INC /CO/ - Common Stock (MLAB) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Conestoga Capital Advisors, LLC 11% $67,905,674 618,111 Conestoga Capital Advisors 31 Dec 2024
BlackRock, Inc. 6.9% -54% $24,158,473 -$25,762,419 378,897 -52% BlackRock, Inc. 30 Sep 2025
VANGUARD GROUP INC 5.8% $21,558,127 321,717 The Vanguard Group 30 Sep 2025
ROYCE & ASSOCIATES LP 5% -6% $29,785,023 -$1,767,538 271,118 -5.6% ROYCE & ASSOCIATES LP 31 Mar 2025

As of 30 Sep 2025, 138 institutional investors reported holding 4,981,287 shares of MESA LABORATORIES INC /CO/ - Common Stock (MLAB). This represents 90% of the company’s total 5,508,853 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of MESA LABORATORIES INC /CO/ - Common Stock (MLAB) together control 71% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
Conestoga Capital Advisors, LLC 7.7% 426,457 -25% 0.46% $28,576,892
BlackRock, Inc. 7.1% 388,795 -51% 0% $26,053,151
VANGUARD GROUP INC 5.8% 321,717 -17% 0% $21,558,256
MORGAN STANLEY 4.6% 254,974 +17% 0% $17,085,848
Ranger Investment Management, L.P. 3.8% 209,700 -2.1% 0.98% $14,051,997
GENEVA CAPITAL MANAGEMENT LLC 3.5% 191,386 -3.9% 0.22% $12,824,757
Simcoe Capital Management, LLC 3.5% 190,929 1.9% $12,794,152
ROYCE & ASSOCIATES LP 2.7% 148,558 -40% 0.1% $9,954,872
JANUS HENDERSON GROUP PLC 2.6% 145,654 +29% 0% $9,760,275
Kent Lake PR LLC 2.4% 134,516 4.6% $9,013,917
MILLENNIUM MANAGEMENT LLC 2.4% 133,817 +132% 0.01% $8,967,077
GEODE CAPITAL MANAGEMENT, LLC 2.3% 127,860 -7.9% 0% $8,569,867
Select Equity Group, L.P. 2.3% 126,715 +24% 0.04% $8,491,172
DIAMOND HILL CAPITAL MANAGEMENT INC 2.2% 123,381 +218% 0.04% $8,267,761
KENNEDY CAPITAL MANAGEMENT LLC 2.2% 121,546 +34% 0.18% $8,144,797
STATE STREET CORP 2.2% 118,948 -44% 0% $7,970,705
DIMENSIONAL FUND ADVISORS LP 2.1% 116,772 +1.3% 0% $7,823,283
Boston Partners 2.1% 114,357 +2010% 0.01% $7,663,935
Russell Investments Group, Ltd. 1.8% 99,187 +25% 0.01% $6,646,552
CRAWFORD INVESTMENT COUNSEL INC 1.5% 82,467 +59% 0.09% $5,526,128
Roubaix Capital, LLC 1.4% 76,657 2.4% $5,136,786
Meros Investment Management, LP 1.4% 76,477 +109% 2.2% $5,124,724
NORTHERN TRUST CORP 1.3% 71,966 -22% 0% $4,822,441
MASON CAPITAL MANAGEMENT LLC 1.3% 70,300 0.96% $4,710,803
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.99% 54,605 -12% 0% $3,659,081

Institutional Holders of MESA LABORATORIES INC /CO/ - Common Stock (MLAB) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 4,589 $360,346 +$294,091 $78.50 10
2025 Q3 4,981,287 $333,781,380 -$17,873,773 $67.01 138
2025 Q2 5,194,339 $489,420,814 +$3,151,881 $94.22 154
2025 Q1 5,170,743 $613,627,706 +$6,492,344 $118.66 151
2024 Q4 5,103,730 $673,044,173 +$27,106,951 $131.87 156
2024 Q3 4,893,266 $633,592,385 -$1,862,690 $129.86 165
2024 Q2 4,891,686 $424,744,670 -$2,238,364 $86.77 149
2024 Q1 4,866,455 $534,319,527 +$3,998,227 $109.73 154
2023 Q4 4,579 $479,741 -$86,435 $104.77 2
2023 Q3 4,901,538 $515,000,356 -$3,815,872 $105.07 152
2023 Q2 4,829,403 $620,581,237 -$18,132,457 $128.50 156
2023 Q1 5,002,846 $874,140,819 -$3,449,297 $174.73 155
2022 Q4 5,070,097 $844,220,323 +$73,411,953 $166.21 152
2022 Q3 4,810,837 $676,623,103 -$10,560,635 $140.83 153
2022 Q2 4,908,947 $1,000,922,705 +$11,630,857 $203.94 167
2022 Q1 4,774,926 $1,216,555,318 +$14,129,385 $254.88 163
2021 Q4 4,737,013 $1,552,337,801 +$4,893,954 $328.09 169
2021 Q3 4,747,888 $1,435,561,293 +$18,601,452 $302.36 169
2021 Q2 4,684,644 $1,270,474,656 +$30,264,747 $271.17 158
2021 Q1 4,611,973 $1,124,183,042 -$29,099,250 $243.50 171
2020 Q4 4,708,466 $1,349,634,260 -$19,634,636 $286.64 173
2020 Q3 4,776,425 $1,218,134,749 +$29,830,069 $254.76 150
2020 Q2 4,670,098 $1,012,388,025 +$112,054,286 $216.80 163
2020 Q1 4,157,973 $940,422,089 +$24,371,013 $226.09 142
2019 Q4 4,023,853 $1,003,880,297 +$15,954,882 $249.40 146
2019 Q3 3,976,475 $945,155,143 +$103,715,690 $237.77 141
2019 Q2 3,536,473 $863,936,948 +$173,181,174 $244.34 122
2019 Q1 2,845,303 $655,857,335 -$22,231,002 $230.50 120
2018 Q4 2,947,434 $614,312,232 +$51,356,213 $208.39 107
2018 Q3 2,704,852 $502,083,713 -$14,316,159 $185.62 106
2018 Q2 2,765,999 $583,877,881 -$3,506,065 $211.08 102
2018 Q1 2,802,633 $416,190,426 +$14,229,777 $148.44 88
2017 Q4 2,712,716 $337,226,902 +$9,277,068 $124.30 90
2017 Q3 2,628,645 $392,542,956 +$17,187,619 $149.32 97
2017 Q2 2,521,942 $361,388,731 +$14,330,826 $143.31 87
2017 Q1 2,422,041 $297,178,014 +$25,631,749 $122.70 88
2016 Q4 2,372,056 $291,162,725 +$6,379,436 $122.75 86
2016 Q3 2,320,851 $265,398,713 +$7,334,177 $114.36 81
2016 Q2 2,257,002 $277,608,577 -$8,046,582 $123.00 79
2016 Q1 2,248,735 $216,599,891 +$12,301,838 $96.35 69
2015 Q4 2,201,892 $218,647,592 +$7,305,701 $99.50 68
2015 Q3 2,123,084 $236,559,832 +$5,381,968 $111.40 64
2015 Q2 2,043,678 $181,752,755 +$5,435,067 $88.90 65
2015 Q1 2,026,868 $146,279,693 +$183,213 $72.20 59
2014 Q4 1,947,277 $150,544,524 +$2,766,833 $77.31 60
2014 Q3 1,706,118 $98,574,623 -$14,638,486 $57.78 57
2014 Q2 1,880,106 $157,808,722 +$3,158,269 $83.96 65
2014 Q1 1,837,414 $165,738,471 +$20,472,522 $90.25 66