# Rainier Investment Management LLC

> Rainier Investment Management LLC is an SEC-registered investment advisory firm in Seattle, WA, registered since 1989, reporting $500 million to $1 billion in regulatory assets under management in its Form ADV filing dated June 23, 2026.

- CRD: 105556
- Filed as: RAINIER INVESTMENT MANAGEMENT LLC
- Registration: SEC-registered investment adviser (status as filed: Approved)
- Location: Seattle, WA
- Filing period: October 2026
- Form ADV filing dated: June 23, 2026
- SEC record (IAPD): https://adviserinfo.sec.gov/firm/summary/105556
- AdvisorCensus page: https://advisorcensus.com/firm/rainier-investment-management-llc-seattle-wa-105556

## Quick answers

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

**Where is Rainier Investment Management LLC located?**
Rainier Investment Management LLC's principal office is in Seattle, WA, according to its Form ADV; the July 2026 filing also lists 3 other offices (Schedule D, Section 1.F).

**Is Rainier Investment Management LLC registered with the SEC or a state?**
Rainier Investment Management LLC is an SEC-registered investment advisory firm, registered since 1989. Status as filed: Approved. CRD 105556.

**How much does Rainier Investment Management LLC manage?**
Rainier Investment Management LLC reports $581,139,481 in regulatory assets under management in its Form ADV filing dated June 23, 2026 (100% discretionary).

**How have Rainier Investment Management LLC's assets and staff changed since 2021?**
In the Form ADV data for Rainier Investment Management LLC: Regulatory assets under management: $1,081,859,397 in the October 2021 data and $581,139,481 in the October 2026 data, down 46%. Total employees: 3 in October 2021 and 3 in October 2026. Assets under management move with markets as well as with clients coming and going.

**What types of clients does Rainier Investment Management LLC serve?**
By number of clients on Form ADV Item 5.D: pooled investment vehicles (other than investment companies and business development companies) (2); investment companies (1); corporations or other businesses not listed above (1).

**Which custodians does Rainier Investment Management LLC use?**
Rainier Investment Management LLC's most recent Form ADV filing (Schedule D, Section 5.K(3)) lists BANKING/CUSTODY as a custodian holding 10% or more of its separately managed account assets.

**Does Rainier Investment 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/105556

**What changed in Rainier Investment Management LLC's recent Form ADV filings?**
In the July 2026 filing data: Updated its list of owners and control persons (Schedule A).

## From the Form ADV filing

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

### Custodians (Schedule D, Section 5.K(3))
- BANKING/CUSTODY

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: $581,139,481
- Discretionary: $581,139,481
- Non-discretionary: $0

### Clients (Item 5.D)

| Client type | Clients | Assets |
| --- | --- | --- |
| Individuals (other than high net worth individuals) | 0 | Not reported |
| High net worth individuals | 0 | Not reported |
| Banking or thrift institutions | 0 | Not reported |
| Investment companies | 1 | $355,619,556 |
| Business development companies | 0 | Not reported |
| Pooled investment vehicles (other than investment companies and business development companies) | 2 | $196,376,214 |
| Pension and profit sharing plans (but not the plan participants or government pension plans) | 0 | Not reported |
| Charitable organizations | 0 | Not reported |
| State or municipal government entities (including government pension plans) | 0 | Not reported |
| Other investment advisers | 0 | Not reported |
| Insurance companies | 0 | Not reported |
| Sovereign wealth funds and foreign official institutions | 0 | Not reported |
| Corporations or other businesses not listed above | 1 | $29,143,711 |
| Other | 0 | Not reported |

### Advisory services (Item 5.G)
- Portfolio management for investment companies (and business development companies)
- 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: 1989 (36 years)
- Employees: 3 total, 3 performing advisory functions
- Wrap fee program participation: No
- States registered or notice-filed: WA
- Disclosures (Item 11): Reports no disclosure items on Form ADV Item 11.

### Other offices (Schedule D, Section 1.F), as of the July 2026 filing
- Dublin, OH
- Fairport, NY
- St. Petersburg, FL

### Websites listed on Form ADV (Item 1.I)
- am.manning-napier.com
- manning-napier.com
- Instagram @manningnapier
- LinkedIn @MANNINGNAPIER
- LinkedIn @manning-napier-asset-management
- YouTube @MANNINGANDNAPIER

## Assets and staff over time

| Data period | Regulatory assets under management | Employees | Filing dated |
| --- | --- | --- | --- |
| October 2021 | $1,081,859,397 | 3 | July 30, 2021 |
| October 2022 | $1,269,490,155 | 3 | April 22, 2022 |
| October 2023 | $930,481,643 | 3 | March 3, 2023 |
| October 2024 | $840,282,836 | 3 | March 13, 2024 |
| October 2025 | $616,990,776 | 4 | March 20, 2025 |
| October 2026 | $581,139,481 | 3 | June 23, 2026 |

Regulatory assets under management: $1,081,859,397 in the October 2021 data and $581,139,481 in the October 2026 data, down 46%.
Total employees: 3 in October 2021 and 3 in October 2026.

## Changes in the filing (last 12 months)

### July 2026
- Updated its list of owners and control persons (Schedule A).

### April 2026
- Employees performing advisory functions went from 4 to 3.
- Updated its list of owners and control persons (Schedule A).

### November 2025
- Updated its list of owners and control persons (Schedule A).

## Source

Form ADV as filed, October 2026. Values appear as filed. Cite as: AdvisorCensus. Rainier Investment Management LLC (CRD 105556): Form ADV filing data as of October 2026.