MLAB
Mesa Laboratorie (MLAB)
NASDAQ
$131.76-$0.11 (-0.09%)
Price as of Sep 22, 2026 9:50 AM EDT
  • $737.9M
    Market Cap
  • 79.33%
    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
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
BOSTON PARTNERS
4.74%
265,149
-3,562 (-1.34%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions95.8M (71.34%)
  • Mutual Funds38.0M (28.29%)
  • 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