Security key
59064R109
MESA LABORATORIES INC /CO/ - Common Stock, no par value (MLAB)
CUSIP: 59064R109
Q1 2020 13F Holders as of 31 Mar 2020
- Security type / class
- Equity / Common Stock, no par value
- Total 13F shares
- 4,158,000
- Total 13F value
- $940,428,089
- Share change
- +115,649
- SEC-reported price per share
- $226.09
- Number of holders
- 143
- Value change
- +$24,185,487
- Number of buys
- 63
- Number of sells
- 64
- 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 2020
Institutions
143
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
BlackRock Finance, Inc.
Disclosed value leader
BlackRock Finance, Inc.
Comparable rows
15/15
Latest evidence
31 Dec 2019
13F
Lead comparable stake: 13%
Showing 1-6 of 15 holder rows.
Quick read
BlackRock Finance, Inc. leads the comparable SEC ownership view at 13%.
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 BlackRock Finance, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock Finance, Inc.
13%
Conestoga Capital Advisors, LLC
8%
VANGUARD GROUP INC
5.3%
ROYCE & ASSOCIATES LP
4.8%
PRICE T ROWE ASSOCIATES INC /MD/
4.3%
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 |
|---|---|---|---|---|---|
| BlackRock Finance, Inc. |
13F
Company
|
13%
|
$175,657,000
704,316 shares
|
— | 31 Dec 2019 |
| Conestoga Capital Advisors, LLC |
13F
Company
|
8%
|
$111,384,000
446,607 shares
|
— | 31 Dec 2019 |
| VANGUARD GROUP INC |
13F
Company
|
5.3%
|
$73,882,000
296,237 shares
|
— | 31 Dec 2019 |
| ROYCE & ASSOCIATES LP |
13F
Company
|
4.8%
|
$66,335,000
265,979 shares
|
— | 31 Dec 2019 |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
Company
|
4.3%
|
$59,312,000
237,818 shares
|
— | 31 Dec 2019 |
| Ranger Investment Management, L.P. |
13F
Company
|
3.2%
|
$44,106,000
176,849 shares
|
— | 31 Dec 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 Q1 2020
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
143
Shares
4,158,000
Rows available
143
| 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 2020 vs Q1 2026 Across Filers
Q1 2026 holders
161
Q1 2020 holders
143
Holder diff
-18
| Investor | Q1 2026 Shares | Q1 2020 Shares | Share Diff | Share Chg % | Q1 2026 value | Q1 2020 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend