Mainline West Tax Advantaged Opportunity Fund funds
Mainline West Tax Advantaged Opportunity Fund has 6 vehicles on the SEC Form D record, in 5 numbered generations, filed from 2018 to 2025. The newest is Mainline West Tax Advantaged Opportunity Fund VIII, LLC, first filed Nov 28, 2025. The adviser of record on Form ADV Schedule D is Mainline West Fund Manager LLC.
- Vehicles
- 6
- Numbered generations
- 5
- First filing
- 2018
- Latest filing
- Nov 28, 2025
Adviser of record (Form ADV Schedule D) Mainline West Fund Manager LLC (CRD 147532)
Names, dates and status as filed on SEC EDGAR. A Form D is a notice of an exempt offering; the SEC does not review or approve it. Grouped by name; see the last question below.
Fund VIII
1 vehicle · first filed
| Vehicle | Sleeve | First filed | Latest filing | Filing record | SEC |
|---|---|---|---|---|---|
| Mainline West Tax Advantaged Opportunity Fund VIII, LLCCIK 2096303 | Filed within 13 months | EDGAR |
Sold to date and investors
Unlock in the terminal (Investor)Fund VII
1 vehicle · first filed
| Vehicle | Sleeve | First filed | Latest filing | Filing record | SEC |
|---|---|---|---|---|---|
| Mainline West Tax Advantaged Opportunity Fund VII LLCCIK 1929167 | No amendment after 13 months | EDGAR |
Sold to date and investors
Unlock in the terminal (Investor)Fund VI
2 vehicles · first filed · latest filing
| Vehicle | Sleeve | First filed | Latest filing | Filing record | SEC |
|---|---|---|---|---|---|
| Mainline West Tax Advantaged Opportunity Fund VI LLCCIK 1834723 | No amendment after 13 months | EDGAR | |||
| Mainline West Tax Advantaged Opportunity Fund VI-5 LLCCIK 1834722 | 5 | No amendment after 13 months | EDGAR |
Sold to date and investors
Unlock in the terminal (Investor)Fund V
1 vehicle · first filed · latest filing
| Vehicle | Sleeve | First filed | Latest filing | Filing record | SEC |
|---|---|---|---|---|---|
| Mainline West Tax Advantaged Opportunity Fund V LLCCIK 1732540 | No amendment after 13 months | EDGAR |
Sold to date and investors
Unlock in the terminal (Investor)Fund IV
1 vehicle · first filed
| Vehicle | Sleeve | First filed | Latest filing | Filing record | SEC |
|---|---|---|---|---|---|
| Mainline West Tax Advantaged Opportunity Fund IV LLCCIK 1639763 | No amendment after 13 months | EDGAR |
Sold to date and investors
Unlock in the terminal (Investor)Questions about the Mainline West Tax Advantaged Opportunity Fund funds
- How many Mainline West Tax Advantaged Opportunity Fund funds are there?
- The SEC Form D record shows 6 vehicles in 5 numbered generations, the earliest filed Mar 8, 2018 and the latest filing on Nov 28, 2025. By generation: Fund VIII (Mainline West Tax Advantaged Opportunity Fund VIII, LLC, first filed Nov 28, 2025); Fund VII (Mainline West Tax Advantaged Opportunity Fund VII LLC, first filed May 16, 2022); Fund VI (2 vehicles, first filed Dec 3, 2020); Fund V (Mainline West Tax Advantaged Opportunity Fund V LLC, first filed Mar 8, 2018); Fund IV (Mainline West Tax Advantaged Opportunity Fund IV LLC, first filed Jan 2, 2019).
- What is the latest Mainline West Tax Advantaged Opportunity Fund fund?
- Mainline West Tax Advantaged Opportunity Fund VIII, LLC, which first filed a Form D on Nov 28, 2025. Its own page carries the filed terms, the people named on the form and every filing on EDGAR.
- Who is the adviser to the Mainline West Tax Advantaged Opportunity Fund funds?
- Mainline West Fund Manager LLC (RIA, CRD 147532), joined from Form ADV Schedule D, where an adviser lists each private fund it advises and the fund's Form D file number.
- How much have the Mainline West Tax Advantaged Opportunity Fund funds raised?
- Each vehicle reports an amount sold and an investor count on its latest Form D or amendment, and those figures are on each vehicle's entity page. The totals by generation are in the AltStreet Terminal (Investor), where master and parallel sleeves that report one family-wide figure are counted once.
- How does AltStreet group these funds into a family?
- By name: the base name minus the fund number, sleeve letters, jurisdiction and legal form, read from each issuer's Form D (lib/edgar/fundFamilies.ts). 'Fund IV' is generation 4; a vehicle whose name carries no number is listed as unnumbered. It is a name-based grouping, not a statement of common control; the filings on each entity page show the related persons as filed.