Investment adviser · CRD 147532

MAINLINE WEST FUND MANAGER LLC

Investment adviser filing (IA)

DENVER, CO, United States · Form ADV filed Mar 14, 2026

Regulatory AUM: $1.77B
Client accounts: 116
Employees: 5
Advisory professionals: 4

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	$1,349,962,317	76.2%
High-net-worth individuals	109	$421,966,582	23.8%

Filing source

Form ADV 2057187 · Mar 14, 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.

MAINLINE WEST TAX ADVANTAGED OPPORTUNITY FUND V LLCOther Private Fund · Last reported Mar 14, 2026$300MGross asset value

Form D fundraising filings

Mainline West Tax Advantaged Opportunity Fund V LLC

Auditor SPICER JEFFRIES DENVER, Colorado, United States

Custodian WILMINGTON TRUST INVESTMENT MANAGEMENT, LLC WILMINGTON, Delaware, United States Related to adviser: No

Marketer M HOLDINGS SECURITIES, INC. PORTLAND, Oregon, United States Related to adviser: No

Provider details

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

SPICER JEFFRIES
PCAOB 349

WILMINGTON TRUST INVESTMENT MANAGEMENT, LLC
SEC 8-37376

M HOLDINGS SECURITIES, INC.
CRD 43285 · SEC 801-57304

Fund details & source

Fund ID: 805-6943896794
Reported beneficial owners: 74
Minimum commitment: $100K
Form D file number: 021-307239

Form ADV 2057187 · Mar 14, 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.

MAINLINE WEST TAX ADVANTAGED OPPORTUNITY FUND VI LLCOther Private Fund · Last reported Mar 14, 2026$287MGross asset value

Auditor SPICER JEFFRIES DENVER, Colorado, United States

Custodian WILMINGTON TRUST INVESTMENT MANAGEMENT, LLC WILMINGTON, Delaware, United States Related to adviser: No

Marketer M HOLDINGS SECURITIES, INC. PORTLAND, Oregon, United States Related to adviser: No

Provider details

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

SPICER JEFFRIES
PCAOB 349

WILMINGTON TRUST INVESTMENT MANAGEMENT, LLC
SEC 8-37376

M HOLDINGS SECURITIES, INC.
CRD 43285 · SEC 801-57304

Fund details & source

Fund ID: 805-5452065433
Reported beneficial owners: 98
Minimum commitment: $100K
Form D file number: 021-307239

Form ADV 2057187 · Mar 14, 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.

MAINLINE WEST TAX ADVANTAGED OPPORTUNITY FUND VII LLCOther Private Fund · Last reported Mar 14, 2026$249MGross asset value

Form D fundraising filings

Mainline West Tax Advantaged Opportunity Fund VII LLC

Fund administrator APEX FUND SOLUTIONS (INDIANA), INC. 420 NW 5TH ST, Indiana, United States Investor statements: No (provided to no investors) Related to adviser: No

Auditor SPICER JEFFRIES DENVER, Colorado, United States

Custodian WILMINGTON TRUST INVESTMENT MANAGEMENT, LLC WILMINGTON, Delaware, United States Related to adviser: No

Marketer M HOLDINGS SECURITIES, INC. PORTLAND, Oregon, United States Related to adviser: No

Provider details

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

SPICER JEFFRIES
PCAOB 349

WILMINGTON TRUST INVESTMENT MANAGEMENT, LLC
SEC 8-37376

M HOLDINGS SECURITIES, INC.
CRD 43285 · SEC 801-57304

Fund details & source

Fund ID: 805-8560902823
Reported beneficial owners: 122
Minimum commitment: $100K
Form D file number: 021-445794

Form ADV 2057187 · Mar 14, 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.

MAINLINE WEST PRIVATE CLIENT TRUST II LLCOther Private Fund · Last reported Mar 14, 2026$209MGross asset value

Form D fundraising filings

Mainline West Private Client Trust II, LLC

Auditor SPICER JEFFRIES DENVER, Colorado, United States

Custodian WILMINGTON TRUST INVESTMENT MANAGEMENT, LLC WILMINGTON, Delaware, 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

SPICER JEFFRIES
PCAOB 349

WILMINGTON TRUST INVESTMENT MANAGEMENT, LLC
SEC 8-37376

Fund details & source

Fund ID: 805-1204430532
Reported beneficial owners: 1
Minimum commitment: $1M
Form D file number: 021-289378

Form ADV 2057187 · Mar 14, 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.

MAINLINE WEST TAX ADVANTAGED OPPORTUNITY FUND VI-5Other Private Fund · Last reported Mar 14, 2026$167MGross asset value

Form D fundraising filings

Mainline West Tax Advantaged Opportunity Fund VI-5 LLC

Auditor SPICER JEFFRIES DENVER, Colorado, United States

Custodian WILMINGTON TRUST INVESTMENT MANAGEMENT, LLC WILMINGTON, Delaware, United States Related to adviser: No

Marketer M HOLDINGS SECURITIES, INC. PORTLAND, Oregon, United States Related to adviser: No

Provider details

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

SPICER JEFFRIES
PCAOB 349

WILMINGTON TRUST INVESTMENT MANAGEMENT, LLC
SEC 8-37376

M HOLDINGS SECURITIES, INC.
CRD 43285 · SEC 801-57304

Fund details & source

Fund ID: 805-2733830529
Reported beneficial owners: 99
Minimum commitment: $100K
Form D file number: 021-382208

Form ADV 2057187 · Mar 14, 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.

MAINLINE WEST PRIVATE CLIENT TRUST I LLCOther Private Fund · Last reported Mar 14, 2026$70.9MGross asset value

Form D fundraising filings

Mainline West Private Client Trust I, LLC

Auditor SPICER JEFFRIES DENVER, Colorado, United States

Custodian WILMINGTON TRUST INVESTMENT MANAGEMENT, LLC WILMINGTON, Delaware, 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

SPICER JEFFRIES
PCAOB 349

WILMINGTON TRUST INVESTMENT MANAGEMENT, LLC
SEC 8-37376

Fund details & source

Fund ID: 805-6593559701
Reported beneficial owners: 3
Minimum commitment: $1M
Form D file number: 021-274760

Form ADV 2057187 · Mar 14, 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.

MAINLINE WEST TAX ADVANTAGED OPPORTUNITY FUND VIII, LLCOther Private Fund · Last reported Mar 14, 2026$43.9MGross asset value

Form D fundraising filings

Mainline West Tax Advantaged Opportunity Fund VIII, LLC

Auditor SPICER JEFFRIES DENVER, Colorado, United States

Custodian WILMINGTON TRUST INVESTMENT MANAGEMENT, LLC WILMINGTON, Delaware, 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

SPICER JEFFRIES
PCAOB 349

WILMINGTON TRUST INVESTMENT MANAGEMENT, LLC
SEC 8-37376

Fund details & source

Fund ID: 805-5763771619
Reported beneficial owners: 79
Minimum commitment: $100K
Form D file number: 021-565283

Form ADV 2057187 · Mar 14, 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 14, 2026. View historical filings

Reported services

Individual portfolio management · Pooled investment vehicle management

Compensation

Percentage of assets · Performance-based

Principal office

2237 W. 30TH AVENUE
DENVER, CO, 80211, United States

CRD 147532

Filing source

Form ADV 2057187 · Mar 14, 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.