# SLATE ADVISORY SERVICE (US) LLC

SLATE ADVISORY SERVICE (US) LLC of CHICAGO, IL is an SEC-registered investment adviser.

## Registration

- CRD: 310404
- Type: SEC-registered investment adviser
- SEC file number: 801-119571
- Location: 150 N WACKER DR, CHICAGO, IL, 60606
- Phone: 312-847-1480
- Latest filing: 2026-08-28
- Regulatory AUM: $1.7B
- Discretionary AUM: $1.7B
- Clients: 80
- Accounts: 11

## Business model

- Compensation: % of AUM, Performance, Other
- Clients served: Investment cos

## Officers, owners & control persons (11)

| Name | Role | Location |
| --- | --- | --- |
| [Brady Scott Welch](https://search.stillhousedata.com/person/697954) | FOUNDING PARTNER; SHAREHOLDER | — |
| [Blair Norbert Welch](https://search.stillhousedata.com/person/697955) | FOUNDING PARTNER; SHAREHOLDER | — |
| [Ramsey Tarik Ali](https://search.stillhousedata.com/person/697958) | GENERAL COUNSEL | — |
| [Michael Mizushima Sullivan](https://search.stillhousedata.com/person/713884) | CHIEF COMPLIANCE OFFICER | — |
| [ARMSTRONG RAYMOND JOSEPH](https://search.stillhousedata.com/person/734605) | CHIEF OPERATING OFFICER | — |
| [MARA ERISA ANTONIA](https://search.stillhousedata.com/person/861841) | CHIEF COMPLIANCE OFFICER | — |
| [ALI RAMSEY TARIK](https://search.stillhousedata.com/person/861842) | CHIEF COMPLIANCE OFFICER; GENERAL COUNSEL | — |
| [WELCH BRADY SCOTT](https://search.stillhousedata.com/person/861843) | FOUNDING PARTNER; SHAREHOLDER | — |
| [WELCH BLAIR NORBERT](https://search.stillhousedata.com/person/861844) | FOUNDING PARTNER; SHAREHOLDER | — |
| [SULLIVAN MICHAEL MIZUSHIMA](https://search.stillhousedata.com/person/880064) | CHIEF COMPLIANCE OFFICER | — |
| [Neil S Kaufman](https://search.stillhousedata.com/person/1004122) | CHIEF ADMINISTRATIVE OFFICER | — |


## Related pages

- Form ADV Part 2 brochure: https://search.stillhousedata.com/firm/310404/brochure
- Similar advisers: https://search.stillhousedata.com/firm/310404/similar
- Related entities: https://search.stillhousedata.com/firm/310404/related
- SEC IAPD (source of record): https://adviserinfo.sec.gov/firm/summary/310404

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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.