Investment adviser · CRD 289202

BLACKSTONE ISG-I ADVISORS L.L.C.

Investment adviser filing (IA)

NEW YORK, NY, United States · Form ADV filed Mar 30, 2026

Regulatory AUM: $184B
Client accounts: 44
Employees: 114
Advisory professionals: 44

Who they report serving

Form ADV · Item 5.D

Client types and their share of reported regulatory assets.

Client type	Clients	Regulatory assets	Share of AUM
Insurance companies	38	$182,614,524,972	99.5%
Pooled investment vehicles	6	$916,625,227	0.5%

Filing source

Form ADV 2083545 · Mar 30, 2026 · Item 5.D

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

Private funds & service providers

6 Private funds

The count excludes feeder funds. Funds in the latest filing appear first, ordered by reported gross assets. Earlier funds retain their last reported values.

BLACKSTONE HOLDINGS PARTNERS L.P.Private Equity Fund · Last reported Mar 30, 2026$533MGross asset value

Auditor DELOITTE & TOUCHE NEW YORK, New York, United States

Custodian BANK OF AMERICA NA NEW YORK, New York, United States Related to adviser: No

Custodian SOCIETE GENERALE S.A. NEW YORK, New York, United States Related to adviser: No

Provider details

Annual audit: Yes
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: No
External marketing: No

DELOITTE & TOUCHE
PCAOB 34

BANK OF AMERICA NA
LEI B4TYDEB6GKMZO031MB27

SOCIETE GENERALE S.A.
LEI O2RNE8IBXP4R0TD8PU41

Fund details & source

Fund ID: 805-3329537648
Reported beneficial owners: 1
Minimum commitment: $0

Form ADV 2083545 · Mar 30, 2026 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

ARROW PTF LPOther Private Fund · Last reported Mar 30, 2026$211MGross asset value

Fund administrator CITCO FUND SERVICES (IRELAND) LIMITED DUBLIN, Ireland Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE NEW YORK, New York, United States

Custodian THE BANK OF NEW YORK MELLON NEW YORK, New York, United States Related to adviser: No

Provider details

Annual audit: Yes
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: No

DELOITTE & TOUCHE
PCAOB 34

THE BANK OF NEW YORK MELLON
LEI HPFHU0OQ28E4N0NFVK49

Fund details & source

Fund ID: 805-8496030029
Reported beneficial owners: 1
Minimum commitment: $0

Form ADV 2083545 · Mar 30, 2026 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

BISA CO-INVEST FUND (CAYMAN) L.P.Private Equity Fund · Last reported Mar 30, 2026$119MGross asset value

Fund administrator MUFG ALTERNATIVE FUND SERVICES (CAYMAN) LTD. C/O MUFG FUND SERVICES (HALIFAX) LIMITED HALIFAX, Canada Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE NEW YORK, New York, United States

Custodian THE BANK OF NEW YORK MELLON NY, New York, United States Related to adviser: No

Provider details

Annual audit: Yes
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: No

DELOITTE & TOUCHE
PCAOB 34

THE BANK OF NEW YORK MELLON
LEI HPFHU0OQ28E4N0NFVK49

Fund details & source

Fund ID: 805-6007697206
Reported beneficial owners: 1
Minimum commitment: $0

Form ADV 2083545 · Mar 30, 2026 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

BISA CO-INVEST FUND II L.P.Private Equity Fund · Last reported Mar 30, 2026$72.4MGross asset value

Fund administrator MUFG ALTERNATIVE FUND SERVICES (CAYMAN) LIMITED C/O MUFG FUND SERVICES (HALIFAX) LIMITED HALIFAX, Canada Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE NEW YORK, New York, United States

Custodian THE BANK OF NEW YORK MELLON NEW YORK, New York, United States Related to adviser: No

Provider details

Annual audit: Yes
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: No

DELOITTE & TOUCHE
PCAOB 34

THE BANK OF NEW YORK MELLON
LEI HPFHU0OQ28E4N0NFVK49

Fund details & source

Fund ID: 805-8102515801
Reported beneficial owners: 1
Minimum commitment: $0

Form ADV 2083545 · Mar 30, 2026 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

BISA CO-INVEST FUND L.P.Private Equity Fund · Last reported Mar 30, 2026$44.6MGross asset value

Auditor DELOITTE & TOUCHE NEW YORK, New York, United States

Custodian THE BANK OF NEW YORK MELLON NY, New York, United States Related to adviser: No

Provider details

Annual audit: Yes
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: No

DELOITTE & TOUCHE
PCAOB 34

THE BANK OF NEW YORK MELLON
LEI HPFHU0OQ28E4N0NFVK49

Fund details & source

Fund ID: 805-9783808232
Reported beneficial owners: 1
Minimum commitment: $0

Form ADV 2083545 · Mar 30, 2026 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

ARROW FAL LPOther Private Fund · Last reported Mar 30, 2026$42.4MGross asset value

Fund administrator CITCO FUND SERVICES (IRELAND) LIMITED DUBLIN, Ireland Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE NEW YORK, New York, United States

Custodian THE BANK OF NEW YORK MELLON NEW YORK, New York, United States Related to adviser: No

Provider details

Annual audit: Yes
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: No

DELOITTE & TOUCHE
PCAOB 34

THE BANK OF NEW YORK MELLON
LEI HPFHU0OQ28E4N0NFVK49

Fund details & source

Fund ID: 805-6369991960
Reported beneficial owners: 1
Minimum commitment: $0

Form ADV 2083545 · Mar 30, 2026 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

Services & filing details

Most recent filing: Mar 30, 2026. View historical filings

Reported services

Pooled investment vehicle management · Business portfolio management · Selection of other advisers

Compensation

Percentage of assets

Principal office

345 PARK AVENUE
NEW YORK, NY, 10154, United States

CRD 289202

Filing source

Form ADV 2083545 · Mar 30, 2026 · Items 1 & 5

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.