What does CUSIP 59064R109 represent in this 13F holders report?

CUSIP 59064R109 is the security identifier for MLAB - MESA LABORATORIES INC /CO/ - Common Stock, no par value used to aggregate holder disclosures.

How many institutions held MLAB - MESA LABORATORIES INC /CO/ - Common Stock, no par value in Q3 2019?

143 institutional investors reported MLAB - MESA LABORATORIES INC /CO/ - Common Stock, no par value for Q3 2019. Use the holders table for investor-level position and value details.

- Common Stock, no par value (MLAB)

CUSIP: 59064R109

Q3 2019 13F Holders as of 30 Sep 2019

Security type / class: Equity / Common Stock, no par value
Shares outstanding: 5,555,932
Total 13F shares: 3,977,286
Share change: +439,752
Total reported value: $945,348,212
Reported price per share: $237.77
Number of holders: 143
Value change: +$103,701,651
Number of buys: 95
Number of sells: 40

Security key

59064R109

Report period

Q3 2019

Institutions

143

Top holders

MLAB full security history Ownership snapshot Full 13F holder table Newer quarter: Q4 2019 Previous quarter: Q2 2019 MESA LABORATORIES INC /CO/ SEC filings MESA LABORATORIES INC /CO/ company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 59064R109

Newer quarter: Q4 2019 Previous quarter: Q2 2019

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Ownership snapshot

Top reported holders of MLAB - MESA LABORATORIES INC /CO/ - Common Stock, no par value (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Lead holder

BlackRock Finance, Inc.

13D/G signal

—

Evidence rows

Latest as of

30 Jun 2019

13F Lead comparable stake: 11% Showing 1-6 of 15 holder rows.

Rank 1 holder

BlackRock Finance, Inc.

13F

Ownership: 11%
Position: $144.83M

13F

Rank 2 holder

Conestoga Capital Advisors, LLC

13F

Ownership: 8.2%
Position: $111.19M

13F

Rank 3 holder

PRICE T ROWE ASSOCIATES INC /MD/

13F

Ownership: 4.9%
Position: $66.03M

13F

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
BlackRock Finance, Inc.	13F Company 13F	11%	$144,828,000 592,726 shares	—	30 Jun 2019
Conestoga Capital Advisors, LLC	13F Company 13F	8.2%	$111,186,000 455,048 shares	—	30 Jun 2019
PRICE T ROWE ASSOCIATES INC /MD/	13F Company 13F	4.9%	$66,033,000 270,249 shares	—	30 Jun 2019
VANGUARD GROUP INC	13F Company 13F	4.1%	$55,183,000 225,842 shares	—	30 Jun 2019
Ranger Investment Management, L.P.	13F Company 13F	3.1%	$42,072,000 172,186 shares	—	30 Jun 2019
KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC	13F Company 13F	2.7%	$36,876,000 150,918 shares	—	30 Jun 2019

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2019

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

143

3,977,286

Rows available

143

Investor	Option	Weight %	Change %	Reported value	* Price	Shares	Share Change	Activity	Report Period

^* Reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that failed the local validity check.

Compare Q3 2019 vs Q2 2019 Across Filers

Q2 2019 holders

123

Q3 2019 holders

143

Holder diff

Investor	Q2 2019 Shares	Q3 2019 Shares	Share Diff	Share Chg %	Q2 2019 value	Q3 2019 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend