Investment adviser · CRD 169245

O'BRIEN-STALEY PARTNERS

Investment adviser filing (IA)

OSP, LLC

EDINA, MN, United States · Form ADV filed Mar 31, 2026

Regulatory AUM
$1.43B
Form ADV · Item 5.F
Client accounts
6
Accounts, not individual clients
Employees
35
Reported in this filing
Advisory professionals
15
Investment advisory functions

Who they report serving

Form ADV · Item 5.D

Client types and their share of reported regulatory assets.

Client typeClientsRegulatory assetsShare of AUM
Pooled investment vehicles6$1,427,581,972100.0%
Filing source

Form ADV 2084267 · Mar 31, 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

8 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.

OSP VALUE FUND IV, LPOther Private Fund · Last reported Mar 31, 2026$724MGross asset value
Fund administrator SS&C TECHNOLOGIES EDINA, Minnesota, United States Investor statements: Yes (provided to all investors) Related to adviser: No
Auditor DELOITTE & TOUCHE LLP MINNEAPOLIS, Minnesota, United States
Custodian BANCO POPULAR SAN JUAN, Puerto Rico, United States Related to adviser: No
Custodian CANTOR FITZGERALD & CO. NEW YORK, New York, United States Related to adviser: No
Custodian COMPUTERSHARE TRUST COMPANY N.A. MINNEAPOLIS, Minnesota, United States Related to adviser: No
Custodian INTERACTIVE BROKERS LLC GREENWICH, Connecticut, United States Related to adviser: No
Custodian PRINSBANK PRINSBURG, Minnesota, United States Related to adviser: No
Prime broker CANTOR FITZGERALD & CO. NEW YORK, New York, United States
Prime broker INTERACTIVE BROKERS LLC GREENWICH, Connecticut, United States
Provider details
Annual audit
Yes
Prime brokers
Yes
Custodians
Yes
Administrator other than the adviser
Yes
External marketing
No

DELOITTE & TOUCHE LLP
PCAOB 34

CANTOR FITZGERALD & CO.
SEC 8-201

COMPUTERSHARE TRUST COMPANY N.A.
LEI 2549001YYB62BVMSAO13

INTERACTIVE BROKERS LLC
SEC 8-47257

CANTOR FITZGERALD & CO.
CRD 134 · SEC 8-201

INTERACTIVE BROKERS LLC
CRD 36418 · SEC 8-47257

Fund details & source
Fund ID
805-9776749841
Reported beneficial owners
86
Minimum commitment
$10M

Form ADV 2084267 · Mar 31, 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.

OSP VALUE FUND III, LPOther Private Fund · Last reported Mar 31, 2026$462MGross asset value

Form D fundraising filings

OSP Value Fund III, LP

Fund administrator SS&C TECHNOLOGIES EDINA, Minnesota, United States Investor statements: Yes (provided to all investors) Related to adviser: No
Auditor DELOITTE & TOUCHE LLP MINNEAPOLIS, Minnesota, United States
Custodian BANCO POPULAR SAN JUAN, Puerto Rico, United States Related to adviser: No
Custodian CANTOR FITZGERALD & CO. NEW YORK, New York, United States Related to adviser: No
Custodian COMPUTERSHARE TRUST COMPANY, N.A. MINNEAPOLIS, Minnesota, United States Related to adviser: No
Custodian INTERACTIVE BROKERS LLC GREENWICH, Connecticut, United States Related to adviser: No
Custodian PRINSBANK PRINSBURG, Minnesota, United States Related to adviser: No
Prime broker CANTOR FITZGERALD & CO. NEW YORK, New York, United States
Prime broker INTERACTIVE BROKERS LLC GREENWICH, Connecticut, United States
Provider details
Annual audit
Yes
Prime brokers
Yes
Custodians
Yes
Administrator other than the adviser
Yes
External marketing
No

DELOITTE & TOUCHE LLP
PCAOB 34

CANTOR FITZGERALD & CO.
SEC 8-201

COMPUTERSHARE TRUST COMPANY, N.A.
LEI 2549001YYB62BVMSAO13

INTERACTIVE BROKERS LLC
SEC 8-47257

CANTOR FITZGERALD & CO.
CRD 134 · SEC 8-201

INTERACTIVE BROKERS LLC
CRD 36418 · SEC 8-47257

Fund details & source
Fund ID
805-9229186192
Reported beneficial owners
61
Minimum commitment
$10M
Form D file number
021-367035

Form ADV 2084267 · Mar 31, 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.

OSP VALUE FUND II, LPOther Private Fund · Last reported Mar 31, 2026$104MGross asset value

Form D fundraising filings

OSP Value Fund II, LP

Fund administrator SS&C TECHNOLOGIES EDINA, Minnesota, United States Investor statements: Yes (provided to all investors) Related to adviser: No
Auditor DELOITTE & TOUCHE LLP MINNEAPOLIS, Minnesota, United States
Custodian BANCO POPULAR SAN JUAN, Puerto Rico, United States Related to adviser: No
Custodian CANTOR FITZGERALD & CO. NEW YORK, New York, United States Related to adviser: No
Custodian COMPUTERSHARE TRUST COMPANY, N.A. MINNEAPOLIS, Minnesota, United States Related to adviser: No
Custodian INTERACTIVE BROKERS LLC GREENWICH, Connecticut, United States Related to adviser: No
Custodian PRINSBANK PRINSBURG, Minnesota, United States Related to adviser: No
Prime broker CANTOR FITZGERALD & CO. NEW YORK, New York, United States
Prime broker INTERACTIVE BROKERS LLC GREENWICH, Connecticut, United States
Provider details
Annual audit
Yes
Prime brokers
Yes
Custodians
Yes
Administrator other than the adviser
Yes
External marketing
No

DELOITTE & TOUCHE LLP
PCAOB 34

CANTOR FITZGERALD & CO.
SEC 8-201

COMPUTERSHARE TRUST COMPANY, N.A.
LEI 2549001YYB62BVMSAO13

INTERACTIVE BROKERS LLC
SEC 8-47257

CANTOR FITZGERALD & CO.
CRD 134 · SEC 8-201

INTERACTIVE BROKERS LLC
CRD 36418 · SEC 8-47257

Fund details & source
Fund ID
805-3798002864
Reported beneficial owners
69
Minimum commitment
$10M
Form D file number
021-286431

Form ADV 2084267 · Mar 31, 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.

OSP VALUE FUND III-B, LPOther Private Fund · Last reported Mar 31, 2026$55.4MGross asset value

Form D fundraising filings

OSP Value Fund III-B, LP

Fund administrator SS&C TECHNOLOGIES EDINA, Minnesota, United States Investor statements: Yes (provided to all investors) Related to adviser: No
Auditor DELOITTE & TOUCHE LLP MINNEAPOLIS, Minnesota, United States
Custodian COMPUTERSHARE TRUST COMPANY, N.A. MINNEAPOLIS, Minnesota, United States Related to adviser: No
Prime broker CANTOR FITZGERALD & CO. NEW YORK, New York, United States
Provider details
Annual audit
Yes
Prime brokers
Yes
Custodians
Yes
Administrator other than the adviser
Yes
External marketing
No

DELOITTE & TOUCHE LLP
PCAOB 34

COMPUTERSHARE TRUST COMPANY, N.A.
LEI 2549001YYB62BVMSAO13

CANTOR FITZGERALD & CO.
CRD 134 · SEC 8-201

Fund details & source
Fund ID
805-2290476960
Reported beneficial owners
16
Minimum commitment
$5M
Form D file number
021-367036

Form ADV 2084267 · Mar 31, 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.

OSP VALUE FUND, LPOther Private Fund · Last reported Mar 31, 2026$48.5MGross asset value

Form D fundraising filings

OSP Value Fund, LP

Fund administrator SS&C TECHNOLOGIES EDINA, Minnesota, United States Investor statements: Yes (provided to all investors) Related to adviser: No
Auditor DELOITTE & TOUCHE LLP MINNEAPOLIS, Minnesota, United States
Custodian BANCO POPULAR SAN JUAN, Puerto Rico, United States Related to adviser: No
Custodian CANTOR FITZGERALD & CO. NEW YORK, New York, United States Related to adviser: No
Custodian COMPUTERSHARE TRUST COMPANY, N.A. MINNEAPOLIS, Minnesota, United States Related to adviser: No
Custodian PRINSBANK PRINSBURG, Minnesota, United States Related to adviser: No
Custodian US BANK MINNEAPOLIS, Minnesota, United States Related to adviser: No
Prime broker CANTOR FITZGERALD & CO. NEW YORK, New York, United States
Prime broker INTERACTIVE BROKERS LLC GREENWICH, Connecticut, United States
Provider details
Annual audit
Yes
Prime brokers
Yes
Custodians
Yes
Administrator other than the adviser
Yes
External marketing
No

DELOITTE & TOUCHE LLP
PCAOB 34

CANTOR FITZGERALD & CO.
SEC 8-201

COMPUTERSHARE TRUST COMPANY, N.A.
LEI 2549001YYB62BVMSAO13

CANTOR FITZGERALD & CO.
CRD 134 · SEC 8-201

INTERACTIVE BROKERS LLC
CRD 36418 · SEC 8-47257

Fund details & source
Fund ID
805-2682243765
Reported beneficial owners
46
Minimum commitment
$5M
Form D file number
021-221504

Form ADV 2084267 · Mar 31, 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.

OSP VALUE FUND IV-B, LPOther Private Fund · Last reported Mar 31, 2026$33.6MGross asset value
Fund administrator SS&C TECHNOLOGIES EDINA, Minnesota, United States Investor statements: Yes (provided to all investors) Related to adviser: No
Custodian COMPUTERSHARE TRUST COMPANY N.A. MINNEAPOLIS, Minnesota, United States Related to adviser: No
Prime broker CANTOR FITZGERALD & CO. NEW YORK, New York, United States
Provider details
Annual audit
No
Prime brokers
Yes
Custodians
Yes
Administrator other than the adviser
Yes
External marketing
No

COMPUTERSHARE TRUST COMPANY N.A.
LEI 2549001YYB62BVMSAO13

CANTOR FITZGERALD & CO.
CRD 134 · SEC 8-201

Fund details & source
Fund ID
805-2209323671
Reported beneficial owners
12
Minimum commitment
$5M

Form ADV 2084267 · Mar 31, 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.

OSP VALUE FUND II-B, LPOther Private Fund · Last reported Jan 4, 2021$174MGross asset value
Fund administrator SS&C TECHNOLOGIES EDINA, Minnesota, United States Investor statements: Yes (provided to all investors) Related to adviser: No
Auditor ERNST & YOUNG LLP MINNEAPOLIS, Minnesota, United States
Provider details
Annual audit
Yes
Prime brokers
No
Custodians
No
Administrator other than the adviser
Yes
External marketing
No

ERNST & YOUNG LLP
PCAOB 42

Fund details & source
Fund ID
805-9760496422
Reported beneficial owners
37
Minimum commitment
$5M

Form ADV 1476791 · Jan 4, 2021 · 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 31, 2026. View historical filings

Reported services

Pooled investment vehicle management

Compensation

Percentage of assets · Performance-based

Principal office

5050 FRANCE AVENUE SOUTH
EDINA, MN, 55410, United States

CRD 169245

Filing source

Form ADV 2084267 · Mar 31, 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.