DOSSIER · 13F Holders · Q1 2026Healthcare · Industrial Instruments For Measurement, Display, and Control
MLAB

MESA LABS INC

173 institutions still hold MESA LABS INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 59064R109·Industrial Instruments For Measurement, Display, and Control·173 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$313M
visible holders
Holders
173
filers reporting
Concentration
11.46%
Long Path Partners LP #1
top holder share
AI Holders Summary · Q1 2026

173 institutions reported MLAB in Q1 2026. Long Path Partners LP leads at 11.5% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Long Path Partners LP
CIK 0001905112
$36M406K16.29%Q1 2026
02
BlackRock, Inc.
CIK 0002012383
$35M394K0.00%Q1 2026
03
Boston Partners
CIK 0001386060
$24M269K0.02%Q1 2026
04
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$21M233K0.00%Q1 2026
05
Ranger Investment Management, L.P.
CIK 0001319691
$18M203K1.30%Q1 2026
06
Select Equity Group, L.P.
CIK 0001592643
$16M206K0.07%Q4 2025
07
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$15M171K0.01%Q1 2026
08
MORGAN STANLEY
CIK 0000895421
$14M162K0.00%Q1 2026
09
ROYCE & ASSOCIATES LP
CIK 0000906304
$14M161K0.14%Q1 2026
10
DIAMOND HILL CAPITAL MANAGEMENT INC
CIK 0001217541
$14M155K0.09%Q1 2026
11
KENNEDY CAPITAL MANAGEMENT LLC
CIK 0000884589
$13M142K0.27%Q1 2026
12
Russell Investments Group, Ltd.
CIK 0001692234
$12M135K0.01%Q1 2026
13
WASATCH ADVISORS LP
CIK 0000814133
$12M116K0.08%Q2 2026
14
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$11M128K0.00%Q1 2026
15
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$11M125K0.00%Q1 2026
16
STATE STREET CORP
CIK 0000093751
$11M122K0.00%Q1 2026
17
RAYMOND JAMES FINANCIAL INC
CIK 0000720005
$11M123K0.00%Q1 2026
18
Kent Lake PR LLC
CIK 0002037231
$9M135K4.55%Q3 2025
19
MONIMUS CAPITAL MANAGEMENT, LP
CIK 0001848831
$9M101K2.48%Q1 2026
20
CRAWFORD INVESTMENT COUNSEL INC
CIK 0000837592
$8M96K0.14%Q1 2026
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Insiders at MESA LABS INC
Crennen Lyndsey ElizabethArchbold Brian DavidSakys JohnKadia SiddharthaOwens Gary MSullivan John JamesAlltoft Jennifer SadieLadiwala Shiraz Shabanali