Investment adviser · CRD 288019

OAK STREET INVESTMENTS

Investment adviser filing (IA)

OAK STREET INVESTMENT ADVISORS, LLC

GREENWOOD VILLAGE, CO, United States · Form ADV filed Sep 25, 2026

Regulatory AUM: $125M
Client accounts: 180
Employees: 1
Advisory professionals: 1

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
Pooled investment vehicles	7	$59,066,667	47.1%
High-net-worth individuals	29	$58,890,040	46.9%
Individuals	36	$7,494,771	6.0%

Filing source

Form ADV 2135009 · Sep 25, 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

16 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.

IRVING INVESTORS OSC SECONDARIES FUND, LLCPrivate Equity Fund · Last reported Sep 25, 2026$40MGross asset value

Form D fundraising filings

Irving Investors OSC Secondaries Fund, LLC

Fund administrator UMB KANSAS CITY, Kansas, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor SUMMIT LLC DENVER, Colorado, United States

Provider details

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

SUMMIT LLC
PCAOB 5251

Fund details & source

Fund ID: 805-7990302138
Reported beneficial owners: 99
Minimum commitment: $40K
Form D file number: 021-489091

Form ADV 2135009 · Sep 25, 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.

IRVING INVESTORS PRIVATES OSC XLII, LLCPrivate Equity Fund · Last reported Sep 25, 2026$12.2MGross asset value

Form D fundraising filings

Irving Investors Privates OSC XLII LLC

Fund administrator HIGHLANDS CPA, LLC DENVER, Colorado, United States Investor statements: Some (provided to some but not all investors) Related to adviser: No

Auditor SUMMIT LLC DENVER, Colorado, United States

Provider details

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

SUMMIT LLC
PCAOB 5251

Fund details & source

Fund ID: 805-3815235741
Reported beneficial owners: 95
Minimum commitment: $15K
Form D file number: 021-429928

Form ADV 2135009 · Sep 25, 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.

IRVING INVESTORS PRIVATES OSC XXXVIIIPrivate Equity Fund · Last reported Sep 25, 2026$5.24MGross asset value

Form D fundraising filings

Irving Investors Privates OSC XXXVIII, LLC

Fund administrator HIGHLANDS CPA, LLC DENVER, Colorado, United States Investor statements: Some (provided to some but not all investors) Related to adviser: No

Auditor SUMMIT LLC DENVER, Colorado, United States

Provider details

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

SUMMIT LLC
PCAOB 5251

Fund details & source

Fund ID: 805-6869914774
Reported beneficial owners: 2
Minimum commitment: $242K
Form D file number: 021-412360

Form ADV 2135009 · Sep 25, 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.

IRVING INVESTORS PRIVATES OSC XLIV, LLCPrivate Equity Fund · Last reported Sep 25, 2026$4MGross asset value

Form D fundraising filings

Irving Investors Privates OSC XLIV, LLC

Auditor SUMMIT LLC DENVER, Colorado, United States

Provider details

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

SUMMIT LLC
PCAOB 5251

Fund details & source

Fund ID: 805-9079777153
Reported beneficial owners: 3
Minimum commitment: $1.5M
Form D file number: 021-490449

Form ADV 2135009 · Sep 25, 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.

IRVING INVESTORS PRIVATES OSC XLIII LLCPrivate Equity Fund · Last reported Sep 25, 2026$1.8MGross asset value

Form D fundraising filings

Irving Investors Privates OSC XLIII LLC

Fund administrator HIGHLANDS CPA, LLC DENVER, Colorado, United States Investor statements: Some (provided to some but not all investors) Related to adviser: No

Auditor SUMMIT LLC DENVER, Colorado, United States

Provider details

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

SUMMIT LLC
PCAOB 5251

Fund details & source

Fund ID: 805-2829942842
Reported beneficial owners: 23
Minimum commitment: $15K
Form D file number: 021-527066

Form ADV 2135009 · Sep 25, 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.

IRVING INVESTORS PRIVATES OSC XL, LLCPrivate Equity Fund · Last reported Sep 25, 2026$725KGross asset value

Form D fundraising filings

Irving Investors Privates OSC XL, LLC

Fund administrator HIGHLANDS CPA, LLC DENVER, Colorado, United States Investor statements: Some (provided to some but not all investors) Related to adviser: No

Auditor SUMMIT LLC DENVER, Colorado, United States

Provider details

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

SUMMIT LLC
PCAOB 5251

Fund details & source

Fund ID: 805-2051235467
Reported beneficial owners: 38
Minimum commitment: $7K
Form D file number: 021-416598

Form ADV 2135009 · Sep 25, 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.

IRVING INVESTORS PRIVATES OSC XXXVPrivate Equity Fund · Last reported Oct 25, 2024$7.45MGross asset value

Form D fundraising filings

Irving Investors Privates OSC XXXV, LLC

Fund administrator HIGHLANDS CPA, LLC DENVER, Colorado, United States Investor statements: Some (provided to some but not all investors) Related to adviser: No

Auditor SUMMIT LLC DENVER, Colorado, United States

Provider details

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

SUMMIT LLC
PCAOB 5251

Fund details & source

Fund ID: 805-3610393118
Reported beneficial owners: 2
Minimum commitment: $20K
Form D file number: 021-409239

Form ADV 1906501 · Oct 25, 2024 · 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: Sep 25, 2026. View historical filings

Reported services

Financial planning · Individual portfolio management · Pooled investment vehicle management

Compensation

Percentage of assets · Hourly · Fixed · Performance-based

Principal office

5500 GREENWOOD PLAZA BLVD, SUITE 130
GREENWOOD VILLAGE, CO, 80111, United States

CRD 288019

Filing source

Form ADV 2135009 · Sep 25, 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.