RESEARCH

Overlook X1 SEC Form D Review 2026: Why Mannsion Uses Lettered Series for Pre-Identified Late-Stage Private Companies

Overlook X1 SEC Form D Review 2026: Why Mannsion Uses Lettered Series for Pre-Identified Late-Stage Private Companies

INDEPENDENT VERDICT

Overlook X1 LP - Series E1A is a verifiable 2026 Delaware private fund managed within The Mannsion Group ecosystem. Its September 18 Form D reports a fixed $350,000 offering of pooled investment fund interests, fully sold to two investors, with a $250,000 minimum investment and first sale on July 24. It relies on Rule 506(b) and Section 3(c)(7), reports no commissions, finder fees or Item 16 related-person payments, and identifies David Samuel Mann together with The Mannsion Group LLC and Overlook CB, LLC in the issuer's governance structure. The filing is small in absolute dollars, but it should not be read as an isolated micro-fund. The more important evidence is that Overlook X1 appears repeatedly through separate letter-number series under separate SEC CIKs, while Mannsion publicly states that it creates funds around pre-identified late-stage private-company opportunities rather than operating only traditional blind pools. The central diligence question is therefore what economic exposure "Series E1A" actually represents and how it relates to the other Overlook X1 series.

THE MANNSION GROUP EXPLAINS WHY THIS ARCHITECTURE EXISTS

Mannsion's own investment materials provide unusually direct context. The firm says it focuses on family offices, ultra-high-net-worth investors and institutions and deploys capital in company-approved primary, secondary and tender transactions. It specifically says that, to comply with private-company cap-table requirements and minimize administrative burden on the underlying company, it will often create and manage "Diversified Funds of Pre-Identified Names." That language is important because it suggests these vehicles are built after specific private-company opportunities have already been identified, rather than first raising a broad blind pool and later searching for assets. Mannsion also describes differentiated access to late-stage private companies through relationships with founders, executives and existing institutional cap-table investors. This structure can make sense in private secondaries because a late-stage company may prefer one fund entry on its cap table rather than dozens of individual family-office investors. It also means that investors need far more detail about the exact underlying names, allocation mechanics and security classes than the generic Form D title provides.

SERIES E1A IS SMALL, BUT EARLIER OVERLOOK X1 SLEEVES WERE MUCH LARGER

The contrast with Series A1B shows why the current `$350K` should not be used to characterize the entire Overlook platform. The March 4 Form D for OVERLOOK X1 LP SERIES A1B reported `$15,349,401` offered and fully sold to 11 investors after a February 5 first sale. It used the same White Plains address, identified The Mannsion Group as investment manager/promoter, Overlook CB as general partner and David Mann as the key executive, and relied on the same private-fund framework. Series A1B also reported `$108,000` of sales commissions and identified Kingswood Capital Partners LLC as a compensation recipient, whereas the newest Series E1A reports no sales compensation. The difference in fund size, investor count, minimum investment and distribution cost strongly suggests that each letter-number sleeve can have materially different economics instead of being interchangeable share classes in one standardized offering.

Other 2026 SEC records reinforce that pattern. Overlook X1 Series D1A appeared in June with a `$20 million` offering, while other lettered vehicles such as Series C1B were also filed separately. Latest September records then show Series E1A as a new `$350,000` vehicle. Because the SEC titles do not disclose the underlying portfolio companies, researchers should resist guessing that "A," "C," "D" or "E" corresponds to a specific well-known private company. The series naming system is evidence of segmentation, not evidence of the asset itself. The correct next diligence document is the private placement memorandum or subscription package for each sleeve, where the pre-identified names, purchase price, security type and allocation rules should be described.

DAVID MANN'S BACKGROUND EXPLAINS THE PRIVATE-MARKET DISTRIBUTION MODEL

The Mannsion Group publicly identifies David Mann as founder and CEO and says he has more than 25 years of experience across private markets, investment banking and institutional finance. Before Mannsion, he created the Private Institutional Client Group at Raymond James and Alex. Brown, where the firm says he built a direct-investment platform for family offices and ultra-high-net-worth clients and oversaw more than `$3 billion` of private-company transactions. Mannsion's current Form ADV shows the firm under CRD 340763 as an Exempt Reporting Adviser rather than a full SEC-registered investment adviser. These facts fit the Overlook X1 model: the manager appears designed around sourcing specific late-stage transactions and aggregating sophisticated private investors into dedicated vehicles rather than operating a broad retail-facing platform.

That model still creates several diligence issues. In private-company secondary transactions, the fund's economic result can depend heavily on the purchase discount or premium to the last primary round, transfer restrictions, ROFR rights, company consent, preferred-versus-common security differences, tender-offer rules and whether the vehicle pays additional carried interest or management fees above the underlying acquisition price. A company-approved transaction can reduce cap-table friction, but it does not itself establish an attractive valuation. Likewise, a pre-identified portfolio reduces blind-pool uncertainty but increases concentration because investors may be allocating to only a handful of named private assets.

FINAL ASSESSMENT

Overlook X1 is best understood as a series-based private-market access architecture, not one conventional venture fund. The latest Series E1A is only `$350,000` and has two investors, but earlier Series A1B was `$15.349 million` with 11 investors and Series D1A carried a `$20 million` offering. Across these vehicles, The Mannsion Group and David Mann repeatedly appear as the manager and controlling persons. Mannsion's own website supplies the missing strategic explanation: it aggregates family-office, UHNW and institutional demand into company-approved primary, secondary and tender transactions and may use diversified funds of pre-identified names to keep underlying company cap tables manageable.

The strongest independent conclusion is therefore not that "Overlook X1 raised $350,000." The more useful conclusion is that Mannsion is repeatedly creating legally separate, differently sized sleeves around pre-selected late-stage private-market opportunities. That can provide cleaner access to otherwise difficult private-company transactions, but it also makes exact vehicle-level diligence essential. Investors should obtain the E1A PPM, subscription agreement, underlying company names, entry valuation, security class, transfer restrictions, fee schedule, carry, GP commitment, allocation policy and cross-series conflict procedures before assuming that economics from one Overlook X1 series apply to another. Form D verifies the offering structure and amount sold; it does not reveal the underlying companies or establish that any private-company valuation is attractive.

Form D is an exempt-offering notice. It is not SEC approval of Overlook X1, The Mannsion Group, any underlying private company or any expected investment return.

SEC SNAPSHOT

ISSUER: Overlook X1 LP - Series E1A | CIK: 0002155670 | FORM D FILED: September 18, 2026

ENTITY: Delaware Limited Partnership | FORMED: 2026 | ADDRESS: 445 Hamilton Avenue, Suite 1500, White Plains, NY 10601 | PHONE: 732-484-0972

INDUSTRY: Pooled Investment Fund | EXEMPTION: Regulation D Rule 506(b) | INVESTMENT COMPANY ACT EXCLUSION: Section 3(c)(7)

SECURITY: Pooled Investment Fund Interests | BUSINESS COMBINATION: No | FIRST SALE: July 24, 2026

TOTAL OFFERING: $350,000 | AMOUNT SOLD: $350,000 | REMAINING: $0 | INVESTORS: 2 | MINIMUM INVESTMENT: $250,000

INVESTMENT MANAGER / PROMOTER: The Mannsion Group LLC | GENERAL PARTNER: Overlook CB, LLC | KEY PERSON / SIGNATORY: David Samuel Mann

SALES COMMISSIONS: $0 | FINDER FEES: $0 | ITEM 16 RELATED-PERSON PAYMENTS: $0

MANAGER REGULATORY RECORD: The Mannsion Group LLC | CRD 340763 | Exempt Reporting Adviser.

MANAGER STRATEGY: Late-stage private-company primary transactions | secondary purchases | tender offers | pre-identified private-company portfolios.

MANNSION PUBLIC STRUCTURE STATEMENT: The firm says it may create diversified funds of pre-identified names to satisfy company cap-table requirements and reduce burden on underlying private companies.

EARLIER OVERLOOK X1 SERIES A1B: $15,349,401 offered and fully sold | 11 investors | first sale February 5, 2026 | $100,000 minimum investment.

SERIES A1B SALES COMPENSATION: $108,000 | COMPENSATION RECIPIENT: Kingswood Capital Partners LLC.

OTHER SERIES CONTEXT: SEC records show additional 2026 Overlook X1 letter-number vehicles including Series C1B and Series D1A; Series D1A carried a $20M offering. These are separate legal issuers / sleeves and should not automatically be aggregated as one fund size.

IMPORTANT UNDERLYING-ASSET LIMITATION: The public Form D titles do not identify which private company or companies are held by Series E1A, A1B, C1B or D1A. Letter codes alone are not sufficient evidence to infer an underlying company.

IMPORTANT CAPITAL DISTINCTION: Amounts from separate Overlook X1 series should not automatically be added and called one "Overlook X1 fund size" because the vehicles can hold different assets, have different investors, commissions, minimums and economics.

CORE INDEPENDENT FINDING: Overlook X1 appears to operationalize Mannsion's stated private-market strategy by creating separate series around pre-identified late-stage company opportunities. The latest E1A is small at $350K, while other 2026 sleeves have been materially larger. The central diligence question is not whether the manager exists, but exactly what each series owns, at what entry price and under what fee, transfer and conflict terms.

Form D is an exempt-offering notice and is not an SEC-issued certificate, approval or endorsement.

Important Form D notice: A Form D filing is a notice filing for an exempt securities offering. It does not mean that the U.S. Securities and Exchange Commission has approved, licensed, endorsed, or verified the issuer or the offering. Readers should verify information through official SEC sources and conduct their own due diligence.
Verification note: SEC.gov and the relevant regulator's official records remain authoritative. This site's research is independent editorial content.