Who owns MESA LABORATORIES INC /CO/ (MLAB)? Elite investor 13F holders
3 tracked elite investors reported holding MESA LABORATORIES INC /CO/ as of 2026-06-30, including D.E. Shaw, Renaissance Technologies LLC, GAMCO. Who bought, trimmed or exited each quarter, with links to the original SEC 13F filings.
3 tracked investors currently reported holding · Latest report period: 2026-06-30 · Information Technology · Technology Hardware & Equipment
Mesa Laboratories, Inc. develops, designs, manufactures, sells, and services life sciences tools and quality control products and services in North America, Europe, the Asia Pacific, and internationally. The Sterilization and Disinfection Control segment offers biological, chemical, and cleaning indicators, used to assess the effectiveness of sterilization, decontamination, disinfection, and…
Reported holders and securities, including exits (up to 20)
| Investor | Security | Instrument | Report period | Filed | Value | Quantity | Units | Change | Source |
|---|---|---|---|---|---|---|---|---|---|
| D.E. Shaw | MESA LABS INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 8138710.00 USD | 81755.000000 | Shares | add | Original filing |
| Renaissance Technologies LLC | MESA LABS INC | SHARE | 2026-06-30 | 2026-08-13 00:00:00 | 2876995.00 USD | 28900.000000 | Shares | reduce | Original filing |
| GAMCO | MESA LABS INC | SHARE | 2026-06-30 | 2026-08-12 00:00:00 | 830247.00 USD | 8340.000000 | Shares | add | Original filing |
| Tudor Investment | MESA LABS INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 0.00 USD | 0.000000 | Shares | exited | Original filing |
Public disclosures can be delayed, incomplete, or amended. Report period describes a position date; transaction date describes a reported transaction; filed describes submission. A recent filing or page update does not establish a current holding. A dash means unavailable or not comparable, not zero.
This public summary shows the default reporting scope. Enable JavaScript for interactive filters, charts, and additional rows.