Burren Capital Advisors Limited
- Regulatory AUM
- $97.7M
- Discretionary
- $97.7M
- Clients
- 2
- Avg AUM / client
- $48.9M
- Accounts
- 2
- Employees
- 5
AUM over time
Reported AUM from Form ADV filings, plotted by filing date · as of Mar 24, 2026
Investments (13F portfolio — 16 positions, $33,008,304)
13F period Sep 30, 2025| # | Issuer | Class | Value | Shares | % of 13F | % of AUM |
|---|---|---|---|---|---|---|
| 1 | Verona Pharma Plc | SPONSORED ADS | $6,743,859 | 63,198 | 20.4% | 6.9% |
| 2 | Verint Sys Inc | COM | $4,265,865 | 210,660 | 12.9% | 4.37% |
| 3 | Txnm Energy Inc | COM | $3,573,847 | 63,198 | 10.8% | 3.66% |
| 4 | Air Lease Corp | CL A | $3,463,897 | 54,421 | 10.5% | 3.54% |
| 5 | Frontier Communications Pare | COM | $3,314,028 | 88,729 | 10.0% | 3.39% |
| 6 | Kellanova | COM | $2,150,318 | 54,185 | 6.51% | 2.2% |
| 7 | Zimvie Inc | COM | $1,994,950 | 105,330 | 6.04% | 2.04% |
| 8 | Avidxchange Holdings Inc | COM | $1,391,428 | 139,842 | 4.22% | 1.42% |
| 9 | Synovus Finl Corp | COM NEW | $1,033,919 | 21,066 | 3.13% | 1.06% |
| 10 | Surmodics Inc | COM | $1,006,217 | 33,664 | 3.05% | 1.03% |
| 11 | The Odp Corp | COM | $973,497 | 34,955 | 2.95% | 1.0% |
| 12 | Premier Inc | CL A | $971,749 | 34,955 | 2.94% | 0.99% |
| 13 | Dayforce Inc | COM | $725,618 | 10,533 | 2.2% | 0.74% |
| 14 | Staar Surgical Co | COM PAR $0.01 | $660,384 | 24,577 | 2.0% | 0.68% |
| 15 | Core Scientific Inc New | COM | $440,911 | 24,577 | 1.34% | 0.45% |
| 16 | Cross Ctry Healthcare Inc | COM | $297,817 | 20,973 | 0.9% | 0.3% |
Top 25 of 16 positions from the manager's latest Form 13F · source filing (EDGAR) ↗. 13F covers long US-listed positions only. "% of AUM" is share of the firm's total regulatory AUM (Form ADV Item 5.F).
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Pooled investment vehicles (non-investment companies) | 2 | $97.7M | 100.0% |
Private funds (2)
Reported in Form ADV Section 7.B.(1), filing of Mar 2024 · $55.8M combined gross assets
| Fund | Type | Domicile | Gross assets | Owners |
|---|---|---|---|---|
| Burren Global Master Icav master | Hedge Fund | Ireland | $55.8M | 1 |
| Montlake Burren Global Arbitrage Ucits Fund | Hedge Fund | Ireland | $0 | 1 |
People (2)
| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Mcgrath, Andrew, Thomas | Director | Jan 2009 (18y) | ≈ 56.25% – 100% via Ampm Ventures Limited | |
| Canessa, Philip, Xavier | Chief Compliance Officer | May 2016 (10y) | Less than 5% |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Ampm Ventures Limited | Managing Member And Iar | Jan 2010 | A | 75% or more |
Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.
Estimated effective ownership (look-through of filed bands):
- Mcgrath, Andrew, Thomas: 75% – 100% of Ampm Ventures Limited × 75% – 100% direct ≈ 56.25% – 100% of the firm
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Private funds (2, $55.8M gross assets)
| Fund | Type | Gross assets | Min. investment | Owners |
|---|---|---|---|---|
| Burren Global Master Icav | Hedge Fund | $55.8M | $120K | 1 |
| Montlake Burren Global Arbitrage Ucits Fund | Hedge Fund | $0 | $12.0K | 1 |
From Form ADV Section 7.B private fund reporting.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 03/24/2026 | 1.23 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
No disciplinary events reported on the firm's latest Form ADV filing.
How they charge
- • Percentage of assets under management
- • Performance-based fees
Services
- • Portfolio management for pooled investment vehicles
Custody
Firm reports it does not have custody of client funds or securities (Item 9.A).
No custodian data reported or mined yet.
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Mar 24, 2026.
View current Form ADV (SEC/IAPD) ↗