When running a Rule 506(c) offering across multiple sub-series, the legal paperwork gets a bit more nuanced than a standard single-asset fund. Because each series often holds distinct assets, raises capital independently, and carries separate liabilities, both SEC regulatory filings and investor disclosures must reflect this structure.

​1. SEC Form D Filings

​The primary question with a Series LLC is: Is the Master LLC the sole issuer, or is each sub-series a separate issuer?

​In practice, securities attorneys typically handle SEC Form D filings for a Series LLC in one of two ways:

​Option A: Separate Form D Filings per Series (Most Common & Best Practice)

​The SEC generally views each individual series within a Series LLC as a distinct "issuer" if the series has its own separate pool of assets, distinct investors, and isolated liabilities.

  • ​How it works: Each series gets its own CIK (Central Index Key) number on SEC EDGAR and files a separate Form D.
  • ​Timing: Each series must file its Form D within 15 calendar days of taking its first binding investment commitment for that specific series.
  • ​State Blue Sky Filings: You will also need to complete separate state "Blue Sky" notice filings and pay filing fees in each state where investors in that specific series reside.

​Option B: Master Entity Filing (Single Form D)

​Occasionally, if all series are being offered simultaneously under one continuous umbrella effort and managed by the same general partner, legal counsel may file one single Form D under the Master LLC.

  • ​Requirement: The Form D must explicitly name the Master LLC as the issuer and disclose in the narrative sections that securities are being offered in distinct sub-series classes.
  • ​Risk/Nuance: If a new series is launched months or years later, an amendment to the Form D (Form D/A) or a new filing may be required depending on how the initial offering period was structured.

Key Rule 506(c) Reminder: Regardless of whether you file one Form D or five, Check Box 506(c) on every filing. This signals to the SEC that general solicitation/advertising is being used and that reasonable steps were taken to verify all investors as accredited.

​2. Private Placement Memorandum (PPM) Disclosures

​Rather than writing completely separate 80-page PPMs for every single sector (Ag, Tech, Real Estate, etc.), funds use a Master PPM + Series Supplement strategy.

   ┌────────────────────────────────────────────────────────┐
   │                       MASTER PPM                       │
   │    (Umbrella terms, GP management, Reg 506(c) rules,   │
   │     accreditation verification, general risk factors)   │
   └───────────────────────────┬────────────────────────────┘
                               │
  ┌────────────────────────────┼────────────────────────────┐
  ▼                            ▼                            ▼

┌──────────────┐ ┌──────────────┐ ┌──────────────┐
│ SERIES AG │ │ SERIES TECH │ │ SERIES RE │
│ SUPPLEMENT │ │ SUPPLEMENT │ │ SUPPLEMENT │
│Specific terms│ │Specific terms│ │Specific terms│
└──────────────┘ └──────────────┘ └──────────────┘

The Master PPM

​This overarching document sets the foundation for the entire fund structure. It covers:

  • ​Series Entity Mechanics: Explicit legal explanations of how the Series LLC operates under state law (e.g., Delaware or Texas Series LLC statutes) and how liability insulation ("ring-fencing") works between series.
  • ​Sponsor & Manager Details: Background, track record, and compensation of the General Partner / Investment Manager.
  • ​Rule 506(c) Procedures: Mandatory verification disclosures detailing how accredited status will be verified (third-party verification letters, tax returns, net worth statements, etc.).
  • ​General Risk Factors: Fund-wide risks, such as illiquidity, lack of a public market, and reliance on key management.

​The Series Supplements (Addendums)

​Each specific asset sleeve (e.g., Series Tech or Series Real Estate) gets a concise Series Supplement provided alongside the Master PPM. This supplement addresses:

  • ​Specific Investment Strategy: Target investments, asset class mechanics, and underlying business models.
  • ​Divergent Asset Risks: Risks specific to that asset class (e.g., crop failure/weather risks for Agriculture vs. rapid obsolescence/high failure rates for Technology).
  • ​Tailored Economic Terms:
    • ​Management Fees: E.g., 2% annual fee for Tech vs. 1.5% for Real Estate.
    • ​Carried Interest / Hurdle Rates: E.g., a 8% preferred return hurdle for Real Estate vs. a higher 20% carry with no hurdle for high-risk early-stage Tech.
    • ​Lock-Up Periods: Real estate or agriculture might require 5-7 year lock-ups, while media or liquid tech investments might offer earlier redemption windows.

​3. Subscription Agreement & Investor Election

​The Subscription Agreement is where the investor legally chooses their allocation. It usually includes an Investment Election Form allowing the investor to check boxes specifying how much capital goes into each series:

  • ​Example Election: $100,000 total investment \rightarrow $50,000 in Series RE + $50,000 in Series Tech.
  • ​Separate Capital Accounts: The fund accounting team creates distinct capital accounts for the investor within each designated series, ensuring profits, losses, and distributions from Real Estate do not commingle with Technology.