Mesa Laboratories Ownership | Who Owns Mesa Laboratories?

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Mesa Laboratories Ownership Summary

Mesa Laboratories is owned by 11.27% institutional investors, 5.44% insiders, and 83.29% retail investors. Blackrock is the largest institutional shareholder, holding 14.92% of MLAB shares. Conestoga Small Cap Investors is the top mutual fund, with 7.35% of its assets in Mesa Laboratories shares.

MLAB Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Mesa Laboratories	11.27%	5.44%	83.29%
Sector	Technology Stocks	35.30%	13.07%	51.63%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	803.50K	14.92%	$69.72M
Blackrock funding, inc. /de	398.67K	7.21%	$31.30M
Vanguard group	321.90K	5.82%	$25.27M
Ranger investment management	205.26K	3.71%	$16.11M
Geneva capital management	178.71K	3.23%	$14.03M
Morgan stanley	175.59K	3.17%	$13.78M
Eagle asset management	149.66K	2.78%	$13.24M
Royce & associates lp	153.35K	2.77%	$12.04M
Diamond hill capital management	141.97K	2.57%	$11.14M
Kent lake pr	134.52K	2.46%	$9.01M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Kent lake pr	134.52K	4.55%	$9.01M
Meros investment management, lp	76.48K	2.19%	$5.12M
Roubaix capital	55.19K	1.85%	$4.33M
Monimus capital management, lp	33.74K	1.39%	$2.26M
Ranger investment management	205.26K	1.11%	$16.11M
Mason capital management	70.30K	0.96%	$4.71M
Herald investment management	50.00K	0.45%	$3.34M
Keeley-teton advisors	22.00K	0.34%	$2.90M
Geneva capital management	178.71K	0.26%	$14.03M
Kennedy capital management	121.55K	0.18%	$8.14M

Top Buyers

Holder	Shares	% Assets	Change
Kent lake pr	134.52K	4.55%	134.52K
Boston partners	114.36K	0.01%	108.94K
Mason capital management	70.30K	0.96%	70.30K
Herald investment management	50.00K	0.45%	50.00K
Meros investment management, lp	76.48K	2.19%	39.86K

Top Sellers

Holder	Shares	% Assets	Change
Conestoga capital advisors	-	-	-426.46K
Simcoe capital management	-	-	-190.93K
Glenmede investment management, lp	3.01K	0.00%	-139.50K
Raymond james financial	47.40K	0.00%	-138.15K
Boone capital management	-	-	-133.39K

New Positions

Holder	Shares	% Assets	Change	Value
Kent lake pr	134.52K	4.55%	134.52K	$9.01M
Mason capital management	70.30K	0.96%	70.30K	$4.71M
Herald investment management	50.00K	0.45%	50.00K	$3.34M
Cubist systematic strategies	35.99K	0.01%	35.99K	$2.41M
Monimus capital management, lp	33.74K	1.39%	33.74K	$2.26M

Sold Out

Holder	Change
Parkside financial bank & trust	-1.00
Twin peaks wealth advisors	-1.00
Tfc financial management	-1.00
Svb wealth	-2.00
Innealta capital	-2.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Dec 31, 2025	31	-77.86%	623,685	-87.49%	11	0.14%	14	-80.00%	9	-82.35%
Sep 30, 2025	47	-67.59%	1,346,461	-72.39%	24	0.31%	15	-78.26%	20	-60.78%
Jun 30, 2025	147	-2.00%	4,956,007	-4.08%	90	1.00%	71	-1.39%	50	-1.96%
Mar 31, 2025	150	-4.46%	5,166,752	1.23%	95	1.08%	72	2.86%	51	-
Dec 31, 2024	146	-11.52%	4,835,724	-1.17%	89	1.09%	66	-15.38%	48	-4.00%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Conestoga Small Cap Investors	404.51K	7.35%	-
iShares Core S&P Small-Cap ETF	325.58K	5.92%	-
Conestoga Small Cap Growth	181.46K	3.33%	8.41K
Vanguard Total Stock Mkt Idx Inv	164.21K	2.97%	-
Vanguard US Total Market Shares ETF	159.57K	2.94%	-
Ranger Small Cap	149.73K	2.71%	-397.00
Kennedy Small Cap Value	137.76K	2.49%	23.57K
Glenmede Small Cap Equity Adv	126.71K	2.32%	-3.04K
iShares Russell 2000 ETF	127.53K	2.31%	19.14K
Glenmede Small Cap Equity	126.71K	2.30%	-3.04K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Jun 16, 2025	Owens Gary M	President and CEO	Sell	$188.31K
Jun 16, 2025	Archbold Brian David	SVP Operations	Sell	$45.84K
Jun 16, 2025	Sakys John	CFO	Sell	$62.35K
Mar 19, 2025	Owens Gary M	President and CEO	Sell	$2.60M
Oct 28, 2024	Owens Gary M	President and CEO	Sell	$286.09K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	-	-
2025 Q3	-	-
2025 Q2	-	3
2025 Q1	-	1
2024 Q4	-	2

MLAB Ownership FAQ

Who owns the most shares of Mesa Laboratories?

Mesa Laboratories’s largest shareholders are Blackrock (803.5K shares, 14.92%), Blackrock funding, inc. /de (398.67K shares, 7.21%), and Vanguard group (321.9K shares, 5.82%). Together, they hold 27.94% of Mesa Laboratories’s total shares outstanding.

Does Blackrock own Mesa Laboratories?

Yes, BlackRock owns 14.92% of Mesa Laboratories, totaling 803.5K shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 69.72M$. In the last quarter, BlackRock decreased its holdings by -27.492K shares, a -3.31% change.

Who is Mesa Laboratories’s biggest shareholder by percentage of total assets invested?

Kent lake pr is Mesa Laboratories’s biggest shareholder by percentage of total assets invested, with 4.55% of its assets in 134.52K Mesa Laboratories shares, valued at 9.01M$.

Who is the top mutual fund holder of Mesa Laboratories shares?

Conestoga Small Cap Investors is the top mutual fund holder of Mesa Laboratories shares, with 7.35% of its total shares outstanding invested in 404.51K Mesa Laboratories shares.

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