MLAB | Mesa Laboratorie | Owners

S&P 500$7,757.17
+0.58%
2m
DOW 30$52,856.09
+0.69%
2m
NASDAQ 100$29,822.52
+1.13%
2m
Russell 2000$276.48
+0.25%
2m
Russell 1000$422.30
+0.59%
2m
S&P 400$3,665.94
+0.40%
2m
S&P 600$1,675.64
+0.08%
2m

Mesa Laboratorie (MLAB)

NASDAQ

$127.95-$1.25 (-0.97%)

Price as of Oct 22, 2026 7:08 PM EDT

$723.0M
Market Cap
66.89%
1-Year Change
Scientific & Technical Instruments
Industry

Top Holders

Institutional

Mutual Funds

Holder	Ownership %	Shares Held	Change (Shares, %)	Report Date
BLACKROCK FUNDING, INC. /DE	15.09%	844,364	+7,543 (+0.89%)	Dec 31, 2024
BLACKROCK INC.	14.36%	803,496	-27,492 (-3.42%)	Jun 30, 2024
LONG PATH PARTNERS LP	8.53%	477,126	+71,543 (+14.99%)	Jun 30, 2026
BLACKROCK, INC.	7.87%	440,552	+46,701 (+10.60%)	Jun 30, 2026
WASATCH ADVISORS LP	6.92%	387,129	+271,461 (+70.12%)	Sep 30, 2026
ROYCE & ASSOCIATES LLC	6.13%	342,758	+1,553 (+0.45%)	Dec 31, 2021
VANGUARD GROUP INC	5.75%	321,899	+182 (+0.06%)	Dec 31, 2025

Holder	Ownership %	Shares Held	Change (Shares, %)	Report Date
VANGUARD INDEX FUNDS	4.13%	231,079	+4,073 (+1.76%)	Jun 30, 2026
DIAMOND HILL FUNDS	1.96%	109,454	-3,224 (-2.95%)	Jun 30, 2026
DFA INVESTMENT DIMENSIONS GROUP INC	1.34%	74,845	+7,494 (+10.01%)	Jul 31, 2026
WASATCH FUNDS TRUST	1.12%	62,487	+38,474 (+61.57%)	Jun 30, 2026
FIDELITY SALEM STREET TRUST	1.06%	59,417	+54,401 (+91.56%)	Jul 31, 2026
Keeley Funds, Inc.	0.96%	53,974	0 (0.00%)	Jun 30, 2026
Dimensional ETF Trust	0.96%	53,955	+11,069 (+20.52%)	Jul 31, 2026

Current Ownership Distribution

Institutions96.2M (70.61%)
Mutual Funds39.5M (29.02%)
Insiders501,907 (0.37%)
Other0 (0.00%)

Insider Transactions

0.37% (501,907)
Current InsiderOwnership (%, shares)
3
Number of InsiderBuying (last 12 months)
$1.1M
Amount of InsiderBuying (last 12 months)
2
Number of InsiderSelling (last 12 months)
$2.7M
Amount of InsiderSelling (last 12 months)

Insider Name & Title	Type	Date	Transaction Value	Shares	Share Price	Shares After Transactions
Capone Mark Christopher	Award	Sep 09, 2026	$0.00	2,423	$0.00	2,423
Sullivan John James	Award	Sep 09, 2026	$0.00	1,774	$0.00	1,774
Hall Shannon	Award	Sep 09, 2026	$0.00	1,774	$0.00	1,774
Ladiwala Shiraz Shabanali	Award	Sep 09, 2026	$0.00	2,510	$0.00	2,510
Sullivan John James	Exempt	Aug 15, 2026	$0.00	2,784	$0.00	0
Ladiwala Shiraz Shabanali	Exempt	Aug 15, 2026	$0.00	3,810	$0.00	0
Capone Mark Christopher	Exempt	Aug 15, 2026	$0.00	2,784	$0.00	0
Tripeny R Tony	Exempt	Aug 15, 2026	$0.00	2,784	$0.00	0
Sullivan John James	Exempt	Aug 15, 2026	$0.00	2,784	$0.00	20,618
Ladiwala Shiraz Shabanali	Exempt	Aug 15, 2026	$0.00	3,810	$0.00	12,333
Capone Mark Christopher	Exempt	Aug 15, 2026	$0.00	2,784	$0.00	6,213
Hall Shannon	Exempt	Aug 15, 2026	$0.00	2,784	$0.00	0
Tripeny R Tony	Exempt	Aug 15, 2026	$0.00	2,784	$0.00	9,082
Alltoft Jennifer Sadie	Exempt	Aug 15, 2026	$0.00	2,784	$0.00	0
Hall Shannon	Exempt	Aug 15, 2026	$0.00	2,784	$0.00	6,973
Alltoft Jennifer Sadie	Exempt	Aug 15, 2026	$0.00	2,784	$0.00	7,662
Sullivan John James	Sell	Aug 13, 2026	$800,090.40	7,093	$112.80	17,834
Kadia Siddhartha President and CEO	Buy	Aug 13, 2026	$800,090.40	7,093	$112.80	7,093
Tripeny R Tony	Buy	Aug 13, 2026	$102,321.00	900	$113.69	6,298
SAKYS JOHN V CFO	Sell	Jun 22, 2026	$253,022.15	2,827	$89.50	19,785
SAKYS JOHN V CFO	Exempt	Jun 18, 2026	$0.00	1,036	$0.00	0
SAKYS JOHN V CFO	Exempt	Jun 18, 2026	$0.00	2,756	$0.00	2,755
SAKYS JOHN V CFO	Exempt	Jun 18, 2026	$98,523.60	1,036	$95.10	17,574
SAKYS JOHN V CFO	Exempt	Jun 18, 2026	$262,095.60	2,756	$95.10	20,330
SAKYS JOHN V CFO	Award	Jun 18, 2026	$217,018.20	2,282	$95.10	22,612
SAKYS JOHN V CFO	Expire Short	Jun 15, 2026	$0.00	3,951	$0.00	15,755
SAKYS JOHN V CFO	Exempt	Jun 15, 2026	$0.00	2,717	$0.00	5,416
SAKYS JOHN V CFO	Award	Jun 15, 2026	$0.00	8,416	$0.00	8,416
SAKYS JOHN V CFO	Exempt	Jun 15, 2026	$282,785.36	2,717	$104.08	17,761
Owens Gary M President and CEO	Return	Mar 31, 2026	$0.00	8,211	$0.00	16,448