Form D · Other Investment Fund

Mainline West Tax Advantaged Opportunity Fund VIII, LLC

Denver, CO · CIK 0002096303

Offering snapshot reported Nov 28, 2025 · SEC filing

Reported sold
$43.9M
Offering amount: $150M
Investors reported
77
Form D · investor count
Minimum accepted
$100K
Reported outside-investor minimum
First sale
Jun 30, 2025
As reported in this filing

What changed?

Latest filing versus its linked predecessor, where available.

No comparable changes in the displayed metrics.

Filing history

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FiledFiling typeReported soldChange vs linked filingInvestorsSource
Nov 28, 2025Initial$43,900,000No comparison77SEC filing

Offering details

Securities
Pooled investment fund, Other
Exemptions
06b, 3C, 3C.7
Duration over one year
No
Business combination
No
Sales commissions
$0
Finders' fees
$0
Form D file number
021-565283
Limited Liability Company Units

Source: Form D, filed Nov 28, 2025. Minimum accepted may differ from a standard advertised minimum.

Fund connections

The linked fund shows its most recently reported ADV details.

Matched by reported Form D file number

MAINLINE WEST TAX ADVANTAGED OPPORTUNITY FUND VIII, LLC

Investment adviser: MAINLINE WEST FUND MANAGER LLC

Gross asset value
$43.9M
Beneficial owners
79
ADV minimum commitment
$100K

Reported in Form ADV on Mar 14, 2026. Fund assets and beneficial owners measure different things from Form D sales and investors.

Service providers

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

Filing source

Form ADV 2057187 · Mar 14, 2026 · Schedule D 7.B.(1), fund 805-5763771619

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

People & organizations

Current and past Form D appearances. These existing records do not establish a person's current role or uniquely identify them across issuers.

People and organizations reported in Form D filings
NameReported role
Anthony Caselli Executive
Paul Dannenhauer Executive
Bradley Kreidle Executive
Michael Maciolek Executive
Mainline West Fund Manager Llc Executive

Issuer details

Industry: Pooled Investment Fund (See others in industry)

Address:
2237 W. 30 Th Avenue
Denver, CO, 80211