Thornburg Bow River Advisers, Llc.
- Regulatory AUM
- $224M
- Discretionary
- $224M
- Clients
- 4
- Avg AUM / client
- $56.0M
- Accounts
- 4
- Employees
- 29
AUM over time
Annual snapshots from Form ADV filings · as of May 22, 2026
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Pooled investment vehicles (non-investment companies) | 4 | $224M | 100.0% |
Private funds (4)
Reported in Form ADV Section 7.B.(1), filing of Oct 2024 · $341M combined gross assets
| Fund | Type | Domicile | Gross assets | Owners |
|---|---|---|---|---|
| Thornburg Bow River Credit Opportunities Master Fund, L.P. master | Other Private Fund | Delaware | $172M | 4 |
| Thornburg Bow River Credit Opportunities Fund, L.P. feeder | Other Private Fund | Delaware | $133M | 57 |
| Thornburg Bow River Credit Opportunities Institutional Fund, L.P. feeder | Other Private Fund | Delaware | $35.3M | 46 |
| Thornburg Bow River Credit Opportunities Executive Fund, L.P. feeder | Other Private Fund | Delaware | $851K | 5 |
People (12)
| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Thornburg, Harold, Garrett | Trustee | Jul 1990 (36y) | ≈ 28.13% – 75% via Garrett Thornburg Revocable Trust | |
| Weichert, James, Martin | Managing Member | Apr 2000 (26y) | ≈ 4.69% – 25% via Weichert Enterprise, Llc. | |
| Richardson, Blair, Ellard | Executive Vice President | Jan 2020 (7y) | ≈ 4.69% – 25% via Bow River Asset Management Corp. Ii | |
| Arnett, Aaron, Michael | Vice President, Officer, Shareholder | Jun 2024 (2y) | 5% – 10% | |
| Davis, Jamison, Reid | Chief Financial Officer | Jun 2024 (2y) | Less than 5% | |
| Ingalls, Jane, Clayton | Chief Operating Officer, Vice President | Jun 2024 (2y) | Less than 5% | |
| Kerr, James, Daniel | Secretary, Chief Compliance Officer, Co Chief Legal Officer, Vice President | Jun 2024 (2y) | Less than 5% | |
| Callow, Amy, Mikolajczyk | Co Chief Legal Officer | Sep 2024 (2y) | Less than 5% | |
| Ettenger, David, Andrew | Vice President, Board Member | Sep 2024 (2y) | Less than 5% | |
| Held, Jeremy, David | Vice President, Board Member | Sep 2024 (2y) | Less than 5% | |
| Jesse Ryan Brownell | Vice President, Board Member | Sep 2024 (2y) | Less than 5% | |
| Zinkula, Mark, Joseph | Executive Vice President, Board Member | Sep 2024 (2y) | Less than 5% |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Thornburg Investment Management Inc | Shareholder; Managing Member | Sep 2024 | A | 50% – 75% |
| Bow River Asset Management, Llc | Shareholder; Managing Member | Jun 2024 | A | 25% – 50% |
| Bow River Asset Management Corp. Ii | Member | Jun 2024 | B | ≈ 18.75% – 50% via Bow River Asset Management, Llc |
| Garrett Thornburg Revocable Trust | Shareholder | Sep 1990 | B | ≈ 37.5% – 75% via Thornburg Investment Management Inc |
| Weichert Enterprise, Llc. | Member | Jun 2024 | B | ≈ 6.25% – 25% via Bow River Asset Management, Llc |
| Richardson 2012 Trust | Shareholder | Feb 2023 | B | ≈ 4.69% – 25% via Bow River Asset Management Corp. Ii |
| Dzmk Advisors, Inc. | Trustee | Feb 2023 | B | GP / trustee / elected manager of Richardson 2012 Trust (indirect) |
Undisclosed: 0% – 20% of the firm is not attributable from the filed Schedule A bands.
Estimated effective ownership (look-through of filed bands):
- Thornburg, Harold, Garrett: 75% – 100% of Garrett Thornburg Revocable Trust × 75% – 100% of Thornburg Investment Management Inc × 50% – 75% direct ≈ 28.13% – 75% of the firm
- Weichert, James, Martin: 75% – 100% of Weichert Enterprise, Llc. × 25% – 50% of Bow River Asset Management, Llc × 25% – 50% direct ≈ 4.69% – 25% of the firm
- Richardson, Blair, Ellard: 25% – 50% of Bow River Asset Management Corp. Ii × 75% – 100% of Bow River Asset Management, Llc × 25% – 50% direct ≈ 4.69% – 25% of the firm
- Bow River Asset Management Corp. Ii: 75% – 100% of Bow River Asset Management, Llc × 25% – 50% direct ≈ 18.75% – 50% of the firm
- Garrett Thornburg Revocable Trust: 75% – 100% of Thornburg Investment Management Inc × 50% – 75% direct ≈ 37.5% – 75% of the firm
- Weichert Enterprise, Llc.: 25% – 50% of Bow River Asset Management, Llc × 25% – 50% direct ≈ 6.25% – 25% of the firm
- Richardson 2012 Trust: 25% – 50% of Bow River Asset Management Corp. Ii × 75% – 100% of Bow River Asset Management, Llc × 25% – 50% direct ≈ 4.69% – 25% 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 (4, $341M gross assets)
| Fund | Type | Gross assets | Min. investment | Owners |
|---|---|---|---|---|
| Thornburg Bow River Credit Opportunities Master Fund, L.P. | Other Private Fund | $172M | $0 | 4 |
| Thornburg Bow River Credit Opportunities Fund, L.P. | Other Private Fund | $133M | $250K | 57 |
| Thornburg Bow River Credit Opportunities Institutional Fund, L.P. | Other Private Fund | $35.3M | $250K | 46 |
| Thornburg Bow River Credit Opportunities Executive Fund, L.P. | Other Private Fund | $851K | $25.0K | 5 |
From Form ADV Section 7.B private fund reporting.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 05/22/2026 | 2.47 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
Allegations: ALLEGED FAILURE TO TIMELY FILE THREE VOTING RIGHTS NOTIFICATIONS WITH BAFIN AND THE ISSUERS. Status: Final Sanction Detail: THE FINE WAS 100,000 EUROS (APPROXIMATELY $111,000). THERE WERE NO OTHER CONDITIONS IMPOSED. Summary: THORNBURG INVESTMENT MANAGEMENT, INC. ("THORNBURG") FILED THREE SUBJECT VOTING RIGHTS NOTIFICATIONS TIMELY BUT WITH MINOR ERRORS. BY THE TIME THORNBURG WAS NOTIFIED OF THE ERRORS, CORRECTED THEM AND REFILED THE NOTIFICATIONS, THE NOTIFICATIONS WERE NO LONGER TIMELY. AMONG OTHER ARGUMENTS, THORNBURG ARGUED THAT THE INITIAL FILINGS WERE MATERIALLY CORRECT AND THEREFORE THE FILINGS WERE TIMELY. THE FINE WAS 100,000 EUROS (APPROXIMATELY $111,000). THERE WERE NO OTHER CONDITIONS IMPOSED.
Disclosure text reproduced verbatim from the firm's own Form ADV filings.
How they charge
- • Percentage of assets under management
- • Performance-based fees
Services
- • Portfolio management for pooled investment vehicles
Custody
Firm reports having 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: May 22, 2026.
View current Form ADV (SEC/IAPD) ↗