Rimrock Capital Management Llc
- Regulatory AUM
- $3.9B
- Discretionary
- $3.9B
- Clients
- 22
- Avg AUM / client
- $175M
- Accounts
- 22
- Employees
- 26
AUM over time
Reported AUM from Form ADV filings, plotted by filing date · as of Apr 30, 2026
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Pooled investment vehicles (non-investment companies) | 16 | $2.9B | 74.3% |
| Charitable organizations | 6 | $989M | 25.7% |
Private funds (4)
Reported in Form ADV Section 7.B.(1), filing of Mar 2024 · $2.2B combined gross assets
| Fund | Type | Domicile | Gross assets | Owners |
|---|---|---|---|---|
| Rimrock High Income Plus (Master) Fund, Ltd. master | Hedge Fund | Cayman Islands | $1.2B | 186 |
| Rimrock Strategic Income Fund, Ltd. | Hedge Fund | Cayman Islands | $510M | 1 |
| Rimrock Low Volatility (Master) Fund, Ltd. master | Hedge Fund | Cayman Islands | $430M | 44 |
| Rimrock Structured Product (Master) Fund, Ltd master | Hedge Fund | Cayman Islands | $99.4M | 50 |
People (10)
roster as of Jul 20, 2026| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| David Hanibal Edington | Founder | Dec 1999 (27y) | ≈ 0% – 1.25% via Edington Living Trust | |
| Christopher Lee Chester | Chief Investment Officer, Managing Director | Jun 2001 (25y) | Less than 5% | |
| Stephen Andrew Foulke | Chief Risk Officer, Managing Director | CFA | Jun 2002 (24y) | Less than 5% |
| Paul Cyril Westhead | Chief Executive Officer, Managing Director | Jul 2004 (22y) | Less than 5% | |
| De Leon, Robert, S | Chief Compliance Officer, General Counsel | Jan 2014 (13y) | Less than 5% | |
| Crowell, Barbara, Anna | Chief Financial Officer | Dec 2014 (12y) | Less than 5% | |
| Carl Svahn | Registered representative | Dec 2025 (1y) | ||
| Kira Reese Hoffman | Registered representative | Dec 2025 (1y) | ||
| Scott Brian Dubchansky | Registered representative | Jan 2026 (1y) | ||
| Jordan D Hughes | Registered representative | CFA | Mar 2026 (0y) |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Rimrock Capital Management, L.P. | Member Of Rimrock Capital Management, Llc | Dec 2012 | A | 75% or more |
| Rimrock Gp, Llc | Managing Member Of Rimrock Capital Management, Llc, General Partner Of Rimrock Capital Management L.P. | Dec 2012 | A | Less than 5% |
| Edington Living Trust | Partner | Dec 1999 | B | ≈ 0% – 2.5% via Rimrock Gp, Llc |
Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.
Estimated effective ownership (look-through of filed bands):
- David Hanibal Edington: 25% – 50% of Edington Living Trust × 25% – 50% of Rimrock Gp, Llc × 0% – 5% direct ≈ 0% – 1.25% of the firm
- Edington Living Trust: 25% – 50% of Rimrock Gp, Llc × 0% – 5% direct ≈ 0% – 2.5% 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, $2.2B gross assets)
| Fund | Type | Gross assets | Min. investment | Owners |
|---|---|---|---|---|
| Rimrock High Income Plus (Master) Fund, Ltd. | Hedge Fund | $1.2B | $1.0M | 186 |
| Rimrock Strategic Income Fund, Ltd. | Hedge Fund | $510M | $1.0M | 1 |
| Rimrock Low Volatility (Master) Fund, Ltd. | Hedge Fund | $430M | $1.0M | 44 |
| Rimrock Structured Product (Master) Fund, Ltd | Hedge Fund | $99.4M | $1.0M | 50 |
From Form ADV Section 7.B private fund reporting.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 04/30/2026 | 2.36 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
- • Portfolio management for businesses/institutional clients
Custody
Reported custodians
- Northern Trust $522M (14% of AUM) Apr 2026
- State Street $467M (12% of AUM) Apr 2026
Amounts as reported in ADV Item 5.K.(3) (custodians holding 10%+ of SMA assets).
Firm reports having custody of client funds or securities (Item 9.A).
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Apr 30, 2026.
View current Form ADV (SEC/IAPD) ↗