# Rimrock Capital Management LLC

> Rimrock Capital Management LLC is an SEC-registered investment advisory firm in Irvine, CA, registered since 2006, reporting $1 billion to $5 billion in regulatory assets under management in its Form ADV filing dated April 30, 2026.

- CRD: 120410
- Filed as: RIMROCK CAPITAL MANAGEMENT LLC
- Registration: SEC-registered investment adviser (status as filed: Approved)
- Location: Irvine, CA
- Filing period: October 2026
- Form ADV filing dated: April 30, 2026
- SEC record (IAPD): https://adviserinfo.sec.gov/firm/summary/120410
- AdvisorCensus page: https://advisorcensus.com/firm/rimrock-capital-management-llc-irvine-ca-120410

## Quick answers

**How is Rimrock Capital Management LLC compensated?**
On its Form ADV (Item 5.E, October 2026), Rimrock Capital Management LLC reports these compensation arrangements: a percentage of assets under its management; performance-based fees. The amounts are in Item 5 of its Form ADV Part 2A brochure.

**Where is Rimrock Capital Management LLC located?**
Rimrock Capital Management LLC's principal office is in Irvine, CA, according to its Form ADV.

**Is Rimrock Capital Management LLC registered with the SEC or a state?**
Rimrock Capital Management LLC is an SEC-registered investment advisory firm, registered since 2006. Status as filed: Approved. CRD 120410.

**How much does Rimrock Capital Management LLC manage?**
Rimrock Capital Management LLC reports $3,851,562,308 in regulatory assets under management in its Form ADV filing dated April 30, 2026 (100% discretionary).

**How have Rimrock Capital Management LLC's assets and staff changed since 2021?**
In the Form ADV data for Rimrock Capital Management LLC: Regulatory assets under management: $4,299,007,477 in the October 2021 data and $3,851,562,308 in the October 2026 data, down 10%. Total employees: 33 in October 2021 and 26 in October 2026. Assets under management move with markets as well as with clients coming and going.

**What types of clients does Rimrock Capital Management LLC serve?**
By number of clients on Form ADV Item 5.D: pooled investment vehicles (other than investment companies and business development companies) (16); charitable organizations (6).

**Which custodians does Rimrock Capital Management LLC use?**
Rimrock Capital Management LLC's most recent Form ADV filing (Schedule D, Section 5.K(3)) lists State Street Bank and Trust Company and The Northern Trust Company as custodians holding 10% or more of its separately managed account assets.

**Does Rimrock Capital Management LLC report any disciplinary disclosures?**
Reports no disclosure items on Form ADV Item 11. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/120410

**What changed in Rimrock Capital Management LLC's recent Form ADV filings?**
In the December 2025 filing data: Employees performing advisory functions went from 8 to 9. Regulatory assets under management went from $2,989,434,423 to $4,023,028,710 (+35%).

## From the Form ADV filing

### Compensation (Item 5.E)
- A percentage of assets under your management
- Performance-based fees

### Custodians (Schedule D, Section 5.K(3))
- State Street Bank and Trust Company
- The Northern Trust Company

Custodians holding 10% or more of the firm's separately managed account assets, as filed on Form ADV (Schedule D, Section 5.K(3)). A custodian holds client assets; it does not endorse or supervise the firm. AdvisorCensus has no relationship with any custodian.

### Regulatory assets under management (Item 5.F)
- Total: $3,851,562,308
- Discretionary: $3,851,562,308
- Non-discretionary: $0

### Clients (Item 5.D)

| Client type | Clients | Assets |
| --- | --- | --- |
| Pooled investment vehicles (other than investment companies and business development companies) | 16 | $2,862,674,916 |
| Charitable organizations | 6 | $988,887,392 |

### Advisory services (Item 5.G)
- Portfolio management for pooled investment vehicles (other than investment companies)
- Portfolio management for businesses (other than small businesses) or institutional clients

### Firm details
- Registered since: 2006 (20 years)
- Employees: 26 total, 9 performing advisory functions
- Wrap fee program participation: No
- States registered or notice-filed: CA
- Disclosures (Item 11): Reports no disclosure items on Form ADV Item 11.

### Websites listed on Form ADV (Item 1.I)
- [rimrockcapital.com](https://rimrockcapital.com)

## Assets and staff over time

| Data period | Regulatory assets under management | Employees | Filing dated |
| --- | --- | --- | --- |
| October 2021 | $4,299,007,477 | 33 | March 30, 2021 |
| October 2022 | $4,008,781,404 | 33 | March 21, 2022 |
| October 2023 | $3,636,789,453 | 33 | March 8, 2023 |
| October 2024 | $3,112,004,768 | 28 | March 26, 2024 |
| October 2025 | $2,989,434,423 | 25 | March 18, 2025 |
| October 2026 | $3,851,562,308 | 26 | April 30, 2026 |

Regulatory assets under management: $4,299,007,477 in the October 2021 data and $3,851,562,308 in the October 2026 data, down 10%.
Total employees: 33 in October 2021 and 26 in October 2026.

## Changes in the filing (last 12 months)

### December 2025
- Employees performing advisory functions went from 8 to 9.
- Regulatory assets under management went from $2,989,434,423 to $4,023,028,710 (+35%).

## Source

Form ADV as filed, October 2026. Values appear as filed. Cite as: AdvisorCensus. Rimrock Capital Management LLC (CRD 120410): Form ADV filing data as of October 2026.