Security key
59064R109
MESA LABORATORIES INC /CO/ - Common Stock, no par value (MLAB)
CUSIP: 59064R109
Q1 2019 13F Holders as of 31 Mar 2019
- Security type / class
- Equity / Common Stock, no par value
- Total 13F shares
- 2,846,838
- Total 13F value
- $656,211,560
- Share change
- -97,397
- SEC-reported price per share
- $230.50
- Number of holders
- 123
- Value change
- -$22,276,204
- Number of buys
- 53
- Number of sells
- 58
- Shares outstanding
- 5,547,977
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2019
Institutions
123
Top holders
10
MLAB full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2025
MESA LABORATORIES INC /CO/ SEC filings
MESA LABORATORIES INC /CO/ company facts
Broader feeds
Reporting periods
Holder history for CUSIP 59064R109
Recent filing periods:
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.
Comparable stake leader
Conestoga Capital Advisor...
Disclosed value leader
Conestoga Capital Advisor...
Comparable rows
15/15
Latest evidence
31 Dec 2018
13F
Lead comparable stake: 8.8%
Showing 1-6 of 15 holder rows.
Quick read
Conestoga Capital Advisors, LLC leads the comparable SEC ownership view at 8.8%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Conestoga Capital Advisors, LLC's linked filing trail.
Comparable ownership
Top 5
Conestoga Capital Advisors, LLC
8.8%
PRICE T ROWE ASSOCIATES INC /MD/
5.2%
BlackRock Finance, Inc.
4.6%
VANGUARD GROUP INC
3.1%
Ranger Investment Management, L.P.
2.8%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Conestoga Capital Advisors, LLC |
13F
Company
|
8.8%
|
$101,331,000
486,256 shares
|
— | 31 Dec 2018 |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
Company
|
5.2%
|
$59,672,000
286,347 shares
|
— | 31 Dec 2018 |
| BlackRock Finance, Inc. |
13F
Company
|
4.6%
|
$52,634,000
252,580 shares
|
— | 31 Dec 2018 |
| VANGUARD GROUP INC |
13F
Company
|
3.1%
|
$36,148,000
173,464 shares
|
— | 31 Dec 2018 |
| Ranger Investment Management, L.P. |
13F
Company
|
2.8%
|
$32,721,000
157,019 shares
|
— | 31 Dec 2018 |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC |
13F
Company
|
2.8%
|
$32,382,000
155,388 shares
|
— | 31 Dec 2018 |
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 Q1 2019
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
123
Shares
2,846,838
Rows available
123
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-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 did not pass the local price check.
Compare Q1 2019 vs Q1 2026 Across Filers
Q1 2026 holders
161
Q1 2019 holders
123
Holder diff
-38
| Investor | Q1 2026 Shares | Q1 2019 Shares | Share Diff | Share Chg % | Q1 2026 value | Q1 2019 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend