# 503 PARTNERS, LLC

503 PARTNERS, LLC of PORTLAND, OR is an SEC exempt reporting adviser.

## Registration

- CRD: 283349
- Type: SEC exempt reporting adviser
- SEC file number: 802-107547
- Location: 2540 NE MARTIN LUTHER KING JR. BOULEVARD, PORTLAND, OR, 97212
- Phone: 541-490-5155
- Latest filing: 2026-03-13

## Officers, owners & control persons (12)

| Name | Role | Location |
| --- | --- | --- |
| [Joseph Biller](https://search.stillhousedata.com/person/99310) | MANAGER | Milwaukee, WI |
| [Anthony Louis Arnerich](https://search.stillhousedata.com/person/717841) | MANAGER; TRUSTEE ANTHONY L ARNERICH TRUST | — |
| [Nicholas Thatcher Walrod](https://search.stillhousedata.com/person/717842) | MANAGER; TRUSTEE KRISTIN R AND NICHOLAS T WALROD TRUST | — |
| [Kristin Rene Walrod](https://search.stillhousedata.com/person/717843) | TRUSTEE KRISTIN R AND NICHOLAS T WALROD TRUST | — |
| [Christine Anne Arnerich](https://search.stillhousedata.com/person/717844) | TRUSTEE CHRISTINE A ARNERICH TRUST | — |
| [Joseph Richard Biller](https://search.stillhousedata.com/person/717845) | TRUSTEE JOSEPH R BILLER TRUST | — |
| [ARNERICH ANTHONY LOUIS](https://search.stillhousedata.com/person/758767) | MANAGER; MANAGING DIRECTOR; MANAGING DIRECTOR, TRUSTEE OF ANTHONY L ARNERICH TRUST (+2 more) | — |
| [ARNERICH CHRISTINE ANNE](https://search.stillhousedata.com/person/758769) | TRUSTEE CHRISTINE A ARNERICH TRUST; TRUSTEE OF CHRISTINE A ARNERICH TRUST | — |
| [BILLER JOSEPH RICHARD](https://search.stillhousedata.com/person/833001) | MANAGING DIRECTOR; MANAGING PARTNER; TRUSTEE JOSEPH R BILLER TRUST | — |
| [Walrod Nicholas Thatcher](https://search.stillhousedata.com/person/893876) | MANAGER; MANAGING DIRECTOR; MANAGING DIRECTOR, TRUSTEE OF KRISTIN R & NICHOLAS T WALROD TRUST (+2 more) | — |
| [Walrod Kristin Rene](https://search.stillhousedata.com/person/893877) | TRUSTEE KRISTIN R AND NICHOLAS T WALROD TRUST | — |
| [Biller Joseph](https://search.stillhousedata.com/person/906197) | MANAGER | — |


## Related pages

- Form ADV Part 2 brochure: https://search.stillhousedata.com/firm/283349/brochure
- Similar advisers: https://search.stillhousedata.com/firm/283349/similar
- Related entities: https://search.stillhousedata.com/firm/283349/related
- SEC IAPD (source of record): https://adviserinfo.sec.gov/firm/summary/283349

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Source: public SEC Form ADV data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.