Investment adviser · CRD 146615

MAINSTREET ADVISORS

Investment adviser filing (IA)

MAINSTREET INVESTMENT ADVISORS LLC

CHICAGO, IL, United States · Form ADV filed Mar 27, 2026

Regulatory AUM: $5.86B
Client accounts: 5,636
Employees: 26
Advisory professionals: 6

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
Banks & thrifts	56	$5,852,768,761	99.9%
High-net-worth individuals	2	$3,138,178	0.1%

Filing source

Form ADV 2085504 · Mar 27, 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

9 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.

STONEROAD STRATEGIC INCOME PLUS INVESTMENT TRUST FUND, A SERIES OF THE STONEROAD SERIES INVESTMENT TRUSTOther Private Fund · Last reported Jan 9, 2020$17.6MGross asset value

Fund administrator STATE STREET BANK AND TRUST COMPANY BOSTON, Massachusetts, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE, LLP CINCINATTI, Ohio, United States

Custodian STATE STREET BANK AND TRUST COMPANY BOSTON, Massachusetts, 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, LLP
PCAOB 34

Fund details & source

Fund ID: 805-6194425506
Reported beneficial owners: 23
Minimum commitment: $5M
Form D file number: 021-207118

Form ADV 1361353 · Jan 9, 2020 · 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.

STONEROAD CORE PLUS FIXED INCOME INVESTMENT TRUST FUND, A SERIES OF THE STONEROAD SERIES INVESTMENT TRUSTOther Private Fund · Last reported Jan 9, 2020$11.3MGross asset value

Form D fundraising filings

StoneRoad Series Investment Trust

Fund administrator STATE STREET BANK AND TRUST COMPANY BOSTON, Massachusetts, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE, LLP CINCINATTI, Ohio, United States

Custodian STATE STREET BANK AND TRUST COMPANY BOSTON, Massachusetts, 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, LLP
PCAOB 34

Fund details & source

Fund ID: 805-9426519967
Reported beneficial owners: 4
Minimum commitment: $5M
Form D file number: 021-242582

Form ADV 1361353 · Jan 9, 2020 · 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.

PINE CREST MAP 2009 LLCReal Estate Fund · Last reported Oct 6, 2023$7.78MGross asset value

Auditor OSTROW REISIN BERK ABRAMS CHICAGO, Illinois, United States

Provider details

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

OSTROW REISIN BERK ABRAMS
PCAOB 4087

Fund details & source

Fund ID: 805-7641748663
Reported beneficial owners: 32
Minimum commitment: $250K
Form D file number: 021-175192

Form ADV 1792223 · Oct 6, 2023 · 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.

STONEROAD STRATEGIC INCOME PLUS SRI INVESTMENT TRUST FUND, A SERIES OF THE STONEROAD SERIES INVESTMENT TRUSTOther Private Fund · Last reported Jan 9, 2020$4.66MGross asset value

Fund administrator STATE STREET BANK AND TRUST COMPANY BOSTON, Massachusetts, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE, LLP CINCINATTI, Ohio, United States

Custodian STATE STREET BANK AND TRUST COMPANY BOSTON, Massachusetts, 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, LLP
PCAOB 34

Fund details & source

Fund ID: 805-8110838418
Reported beneficial owners: 19
Minimum commitment: $5M
Form D file number: 021-266941

Form ADV 1361353 · Jan 9, 2020 · 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.

PINE CREST GLOBAL ASSET FUND LLCReal Estate Fund · Last reported Oct 6, 2023$3.69MGross asset value

Auditor OSTROW REISIN BERK ABRAMS CHICAGO, Illinois, United States

Provider details

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

OSTROW REISIN BERK ABRAMS
PCAOB 4087

Fund details & source

Fund ID: 805-6385018340
Reported beneficial owners: 88
Minimum commitment: $250K
Form D file number: 021-109508

Form ADV 1792223 · Oct 6, 2023 · 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.

STONEROAD CORE PLUS FIXED INCOME SRI INVESTMENT TRUST FUND, A SERIES OF THE STONEROAD SERIES INVESTMENT TRUSTOther Private Fund · Last reported Jan 9, 2020$3.4MGross asset value

Fund administrator STATE STREET BANK AND TRUST COMPANY BOSTON, Massachusetts, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE, LLP CINCINATTI, Ohio, United States

Custodian STATE STREET BANK AND TRUST COMPANY BOSTON, Massachusetts, 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, LLP
PCAOB 34

Fund details & source

Fund ID: 805-2884585916
Reported beneficial owners: 11
Minimum commitment: $100K
Form D file number: 021-230432

Form ADV 1361353 · Jan 9, 2020 · 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.

PINE CREST PARTNERS II LLCPrivate Equity Fund · Last reported Oct 6, 2023$784KGross asset value

Auditor OSTROW REISIN BERK ABRAMS CHICAGO, Illinois, United States

Provider details

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

OSTROW REISIN BERK ABRAMS
PCAOB 4087

Fund details & source

Fund ID: 805-8161337243
Reported beneficial owners: 67
Minimum commitment: $500K
Form D file number: 021-175210

Form ADV 1792223 · Oct 6, 2023 · 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 27, 2026. View historical filings

Reported services

Individual portfolio management · Business portfolio management · Publication of newsletters

Compensation

Percentage of assets · Fixed

Principal office

120 N. LASALLE STREET, SUITE 3300
CHICAGO, IL, 60602-2424, United States

CRD 146615

Filing source

Form ADV 2085504 · Mar 27, 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.