Mesa Laboratories, Inc. (MLAB) ownership: Top institutional holder: Long Path Partners LP ($35.86M). Insider activity: Net Seller (3 buys, 17 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| Long Path Partners LP | 405583.00 | $35.86M | 2026-03-31 |
| BlackRock, Inc. | 393851.00 | $34.82M | 2026-03-31 |
| VANGUARD GROUP INC | 321899.00 | $25.27M | 2025-12-31 |
| Boston Partners | 268711.00 | $23.76M | 2026-03-31 |
| Select Equity Group, L.P. | 235885.00 | $20.86M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 232643.00 | $20.57M | 2026-03-31 |
| Ranger Investment Management, L.P. | 202903.00 | $17.94M | 2026-03-31 |
| AQR CAPITAL MANAGEMENT LLC | 170562.00 | $15.08M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.