# BLACKSTONE ISG-I ADVISORS L.L.C.

BLACKSTONE ISG-I ADVISORS L.L.C. of NEW YORK, NY is an SEC-registered investment adviser.

## Registration

- CRD: 289202
- Type: SEC-registered investment adviser
- SEC file number: 801-111810
- Location: 345 PARK AVENUE, NEW YORK, NY, 10154
- Phone: 212-583-5000
- Latest filing: 2026-03-30
- Regulatory AUM: $183.5B
- Discretionary AUM: $183.5B
- Clients: 114
- Accounts: 44

## Business model

- Compensation: % of AUM
- Clients served: Pooled vehicles, Charities, Investment cos

## Officers, owners & control persons (21)

| Name | Role | Location |
| --- | --- | --- |
| [Ida Hoghooghi](https://search.stillhousedata.com/person/67734) | CHIEF OPERATING OFFICER | New York, NY |
| [Panayiota (Toula) K Bougiamas](https://search.stillhousedata.com/person/664426) | CHIEF COMPLIANCE OFFICER | — |
| [Gilles Maurice Dellaert](https://search.stillhousedata.com/person/664428) | GLOBAL HEAD OF BLACKSTONE CREDIT AND INSURANCE | — |
| [William P Skinner](https://search.stillhousedata.com/person/664429) | CHIEF FINANCIAL OFFICER | — |
| [Neil Douglas Schwartz](https://search.stillhousedata.com/person/674533) | CHIEF COMPLIANCE OFFICER | — |
| [Robert Freddie Young](https://search.stillhousedata.com/person/683908) | GENERAL COUNSEL | — |
| [Philip William Sherrill](https://search.stillhousedata.com/person/683909) | GLOBAL HEAD OF INSURANCE | — |
| [BLUNT CHRISTOPHER OWSLEY](https://search.stillhousedata.com/person/750757) | CHIEF EXECUTIVE OFFICER | — |
| [FINLEY JOHN GARY](https://search.stillhousedata.com/person/773254) | CHIEF LEGAL OFFICER | — |
| [IVERSON JEFFREY CARTER](https://search.stillhousedata.com/person/816113) | CHIEF COMPLIANCE OFFICER; CHIEF OPERATING OFFICER; GENERAL COUNSEL | — |
| [SKURBE MATTHEW BRYANT](https://search.stillhousedata.com/person/816114) | TREASURER | — |
| [STRIANO CHRISTOPHER MICHAEL](https://search.stillhousedata.com/person/819363) | CHIEF FINANCIAL OFFICER | — |
| [ALDERSON SMITH MARTIN RICHARD](https://search.stillhousedata.com/person/844693) | CHIEF EXECUTIVE OFFICER; CHIEF OPERATING OFFICER | — |
| [SCOTT DONALD DWIGHT](https://search.stillhousedata.com/person/848293) | CHAIRMAN OF BLACKSTONE CREDIT AND INSURANCE | — |
| [SCHWARTZ NEIL DOUGLAS](https://search.stillhousedata.com/person/854272) | CHIEF COMPLIANCE OFFICER | — |
| [DELLAERT GILLES MAURICE](https://search.stillhousedata.com/person/858851) | CHIEF EXECUTIVE OFFICER; GLOBAL HEAD; GLOBAL HEAD OF BLACKSTONE CREDIT AND INSURANCE | — |
| [NAHABEDIAN SEBOUH](https://search.stillhousedata.com/person/859796) | HEAD OF FINANCE AND OPERATIONS | — |
| [Young Robert Freddie](https://search.stillhousedata.com/person/865538) | GENERAL COUNSEL | — |
| [HOGHOOGHI IDA](https://search.stillhousedata.com/person/867619) | CHIEF OPERATING OFFICER | — |
| [SKINNER WILLIAM P](https://search.stillhousedata.com/person/870106) | CHIEF FINANCIAL OFFICER | — |
| [Panayiota (Toula) K. Bougiamas](https://search.stillhousedata.com/person/999363) | CHIEF COMPLIANCE OFFICER | — |


## Private funds (6)

Mix: Private Equity Fund 4 · Other Private Fund 2

| Fund | Type | Formed | Owners | GAV | Min investment |
| --- | --- | --- | --- | --- | --- |
| BLACKSTONE HOLDINGS PARTNERS L.P. | Private Equity Fund | Cayman Islands | 1 | $532.9M | — |
| ARROW PTF LP | Other Private Fund | United Kingdom | 1 | $210.7M | — |
| BISA CO-INVEST FUND (CAYMAN) L.P. | Private Equity Fund | Cayman Islands | 1 | $119.0M | — |
| BISA CO-INVEST FUND II L.P. | Private Equity Fund | Delaware | 1 | $72.4M | — |
| BISA CO-INVEST FUND L.P. | Private Equity Fund | Delaware | 1 | $44.6M | — |
| ARROW FAL LP | Other Private Fund | United Kingdom | 1 | $42.4M | — |


## Branch offices (8)

| City | State | Employees | Phone |
| --- | --- | --- | --- |
| LONDON | — | 8 | +442074514000 |
| LONDON | — | 8 | +442074514000 |
| HONG KONG | — | 3 | 8523656 8600 |
| HONG KONG | — | 3 | 8523656 8600 |
| MARUNOUCHI, CHIYODA-KU, TOKYO | — | 2 | +810345778400 |
| MARUNOUCHI, CHIYODA-KU, TOKYO | — | 2 | +810345778400 |
| SINGAPORE | — | 1 | +656850 7500 |
| SINGAPORE | — | 1 | +656850 7500 |


## Fund service providers (3)

- administrator: CITCO FUND SERVICES (IRELAND) LIMITED — 2 funds
- administrator: MUFG ALTERNATIVE FUND SERVICES (CAYMAN) LTD. C/O MUFG FUND SERVICES (HALIFAX) LIMITED — 2 funds
- administrator: MUFG ALTERNATIVE FUND SERVICES (CAYMAN) LIMITED C/O MUFG FUND SERVICES (HALIFAX) LIMITED

## Related pages

- Form ADV Part 2 brochure: https://search.stillhousedata.com/firm/289202/brochure
- Similar advisers: https://search.stillhousedata.com/firm/289202/similar
- Related entities: https://search.stillhousedata.com/firm/289202/related
- SEC IAPD (source of record): https://adviserinfo.sec.gov/firm/summary/289202

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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.