Form
SCHEDULE 13G/A
Passive or exempt beneficial ownership filing.
Long Path Smaller Companies Fund, LP - 31 Mar 2026 SCHEDULE 13G/A Report for Mesa Laboratories, Inc. Common Stock, no par value (MLAB)
- Filing manager
- Long Path Smaller Companies Fund, LP
- Reporting owner
- Long Path Smaller Companies Fund, LP
- Beneficially owned shares
- 405,583 shares
- Large-stake signal
-
Ownership
7.3%Beneficial ownership of this reported class.
Shares
405,583 sharesShares beneficially owned as disclosed.
Event date
31 Mar 2026Date tied to the ownership event or amendment.
Accepted by SEC
15 Apr 2026EDGAR acceptance date.
How to read this large-stake filing
- Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
- Compare this filing with the holder history and issuer page before treating the percentage as a current position.
- Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
- Class ownership
- 7.3%
- Symbol
- MLAB
- Shares outstanding
- 5,555,932 shares
- SEC form
- SCHEDULE 13G/A
- Accepted by SEC
- 15 Apr 2026, 12:11:22 UTC
- Event date
- 31 Mar 2026
- Prior SEC filing
- 13 Mar 2026
- Source filing
- View source filing
Ownership signal
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Subject security
Names, identifiers, and filing context for this profile.
2 source fields
Source evidence
Original filing metadata and source links for verification.
5 source fields
Key filing fact
Long Path Smaller Companies Fund, LP disclosed 7.3% ownership in Mesa Laboratories, Inc. Common Stock, no par value (MLAB) on 31 Mar 2026.
Key facts
- Long Path Smaller Companies Fund, LP filed SCHEDULE 13G/A for Mesa Laboratories, Inc. Common Stock, no par value (MLAB).
- Disclosed ownership: 7.3%.
- Date of event: 31 Mar 2026.
Change
- Previous schedule filing date: 13 Mar 2026.
- Current filing was accepted on 15 Apr 2026, 12:11.
Research use
- This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
- Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.
Evidence
Backed by Schedule 13D/13G
View source filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Disclosed reporting parties (6)
Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.
| Name | Ownership | Shares owned | Sole voting power | Shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Long Path Smaller Companies Fund, LP | 7.3% | 405,583 | 0 | 405,583 | /s/ William Thomas Brennan | William Thomas Brennan/Managing Member of Long Path Fund GP, LLC, its general partner | |
| Long Path Fund GP, LLC | 7.3% | 405,583 | 0 | 405,583 | /s/ William Thomas Brennan | William Thomas Brennan/Managing Member | |
| Long Path Partners, LP | 7.3% | 405,583 | 0 | 405,583 | /s/ William Thomas Brennan | William Thomas Brennan/Managing Member of Long Path Holdings LLC, its general partner | |
| Long Path Holdings LLC | 7.3% | 405,583 | 0 | 405,583 | /s/ William Thomas Brennan | William Thomas Brennan/Managing Member | |
| William Thomas Brennan | 7.3% | 405,583 | 0 | 405,583 | /s/ William Thomas Brennan | William Thomas Brennan/individually | |
| Brian Paul Nelson | 7.3% | 405,583 | 0 | 405,583 | /s/ Brian Paul Nelson | Brian Paul Nelson/individually |
CIK / CUSIP context first