INDEPENDENT ASSESSMENT
Overlook X1 LP - Series E1A is a verifiable 2026 Delaware private-equity vehicle managed from The Mannsion Group's White Plains, New York platform. Its September 18, 2026 Form D reports a fixed $350,000 offering that was fully sold to two investors, leaving $0 remaining, with a July 24, 2026 first sale and a $250,000 minimum investment. The vehicle relies on Rule 506(b) and Section 3(c)(7), offers pooled investment fund interests, reports no sales commissions or finder's fees and does not identify an outside placement agent. David Samuel Mann is listed as an executive officer, The Mannsion Group LLC as promoter and investment manager, and the same 445 Hamilton Avenue, Suite 1500 address and 732-484-0972 phone number recur throughout the broader Overlook X1 filing family. The defining research story is not this small $350,000 sleeve by itself: Overlook X1 has appeared during 2026 through several separately filed series with radically different sizes, investor counts and distribution arrangements, showing that Mannsion is using a modular series architecture for distinct late-stage private-market allocations rather than operating one conventional blind-pool fund.
The earlier Overlook filings make that architecture unusually visible. Series A1B filed on March 4, 2026 with a fixed $15,349,401 offering fully sold to 11 investors, Rule 506(b), Section 3(c)(7), and approximately $108,000 of reported sales commissions; Kingswood Capital Partners, LLC was identified as the sales-compensation recipient. Series B1A later appeared on July 1 with a $100 million offering and $0 sold at launch, while Series C1B surfaced with a $25 million offering and public filing trackers showing approximately 14.4% subscribed, with LarrainVial Securities US LLC appearing in the placement chain. The September E1A vehicle then closed at only $350,000 with two investors and no sales compensation. These are not successive amendments to one fund: they are separate legal issuers with separate CIKs and separate economics. The striking variation — $350,000, $15.35 million, $25 million and $100 million target structures — strongly suggests that the letter-number designations correspond to different investment sleeves, investor groups, access structures or transaction allocations, although the Form D filings do not identify the underlying companies and FilingDossier should not invent what A1B, B1A, C1B or E1A specifically own.
THE MANNSION GROUP MODEL EXPLAINS WHY OVERLOOK IS BUILT AS A SERIES RATHER THAN ONE FLAGSHIP FUND
The Mannsion Group's own website provides the clearest explanation for this pattern. The firm says it invests its own capital alongside family offices, ultra-high-net-worth individuals and institutional investors in growth and late-stage private companies, sourcing transactions through founders, C-suite executives and institutional cap-table holders. More importantly, Mannsion explicitly says it executes company-approved primary, secondary and tender-offer transactions and will often create diversified funds containing pre-identified company names to satisfy issuer cap-table requirements and reduce administrative burden on the underlying private company. That language is highly relevant to Overlook X1 because it explains why multiple separately capitalized series can exist under a common platform without being traditional sequential Fund I / II / III vintages. The manager can build a legal sleeve around a particular approved allocation or combination of pre-identified private companies, admit a selected group of eligible investors, and keep the underlying company's cap table cleaner than if every investor held shares directly.
David Mann's background adds unusually strong sponsor context. Mannsion says Mann previously founded the Private Institutional Client Group at Raymond James and Alex. Brown, where the platform reviewed more than 10,000 opportunities, completed more than 100 investments and facilitated over $3 billion of private-company transactions; before that he held institutional roles at Deutsche Bank and JPMorgan. His current public biography also identifies him as a board member of Third Point BDC. Separate FINRA BrokerCheck disclosures tied to Mannsion provide an even more concrete example of the firm's operating model: Mannsion SX LLC was formed to invest directly or indirectly in securities of Space Exploration Technologies Corporation, with The Mannsion Group as manager. That does not prove any Overlook X1 series owns SpaceX, and it would be incorrect to make that leap. What it does prove is that Mannsion is actively using dedicated legal vehicles to give selected investors access to specific late-stage private-company exposures, exactly the type of architecture suggested by the Overlook X1 series filings.
FINAL ASSESSMENT
Overlook X1 LP - Series E1A is therefore a genuine SEC-filed private-equity sleeve inside a much more interesting late-stage access platform. The September 2026 filing itself is simple — $350,000 fully sold, two investors, $250,000 minimum, Rule 506(b), Section 3(c)(7), no placement agent and The Mannsion Group as investment manager — but the surrounding series family reveals the real structure. Earlier Overlook vehicles range from a $15.349 million fully subscribed A1B sleeve to a $100 million B1A target and a separate $25 million C1B offering, with different placement-agent arrangements across series. Mannsion's own description of company-approved private-market transactions and diversified funds of pre-identified names makes that variation economically plausible. The crucial missing information is asset-level: investors should obtain the series supplement, underlying-company list, purchase price, primary versus secondary classification, security type, valuation, sponsor commitment, management fee, carried interest, transfer restrictions, company ROFR or approval rights and current fair value before assuming that any two Overlook X1 series have the same portfolio or economics.
SEC SNAPSHOT
SEC CLASSIFICATION: Private Equity / Pooled Investment Fund | SECURITY: Pooled Investment Fund Interests | EXEMPTION: Rule 506(b) | ICA EXCLUSION: Section 3(c)(7) | FIRST SALE: July 24, 2026 | OFFERING DURATION: Not intended to last more than one year.
RELATED PERSONS: David Samuel Mann — Executive Officer | The Mannsion Group LLC — Promoter / Investment Manager | SIGNER: David Mann — Managing Member of the Investment Manager.
IMPORTANT CAPITAL DISTINCTION: $350K is Series E1A's offering amount, not Overlook X1 platform AUM, Mannsion Group AUM or the valuation of any underlying private company.
WEBSITE / ENTITY PENETRATION
OFFICIAL MANAGER: The Mannsion Group LLC | OFFICIAL DOMAIN: mannsiongroup.com | ADDRESS: 445 Hamilton Avenue, Suite 1500, White Plains, New York — matching the Overlook filings.
MANNSION INVESTOR FOCUS: Family Offices | UHNW Individuals | Institutional Investors | Wealth Managers | Private Banks | Multi-Family Offices | RIAs.
TRANSACTION MODEL: company-approved primary transactions | secondary transactions | tender offers | diversified funds of pre-identified private-company names | manager states this model is intended to reduce cap-table burden on portfolio companies.
DAVID MANN: Founder & CEO | 25+ years across private markets, investment banking and institutional finance | former founder of Raymond James / Alex. Brown Private Institutional Client Group | Mannsion reports 10,000+ opportunities reviewed, 100+ investments completed and $3B+ of private-company transactions facilitated through that prior platform.
OTHER MANNSION STRUCTURAL EVIDENCE: Mannsion SX LLC — separate SEC/FINRA-disclosed vehicle formed to pursue direct or indirect investment in Space Exploration Technologies Corporation. This confirms Mannsion's company-specific access-vehicle model but does NOT establish that any Overlook X1 series owns SpaceX.
OVERLOOK X1 SERIES A1B: CIK 0002115112 | filed March 4, 2026 | $15,349,401 offering | $15,349,401 sold | 11 investors | Rule 506(b) | Section 3(c)(7) | Kingswood Capital Partners disclosed | approximately $108,000 commissions.
OVERLOOK X1 SERIES B1A: CIK 0002142123 | filed July 1, 2026 | $100,000,000 target | $0 sold at filing.
OVERLOOK X1 SERIES C1B: 2026 | $25,000,000 offering | public filing data show approximately 14.4% subscribed | LarrainVial Securities US LLC appears in the placement chain.
OVERLOOK X1 SERIES E1A: $350,000 fully sold | 2 investors | $250,000 minimum | no outside placement agent reported.
UNDERLYING E1A PORTFOLIO COMPANY / COMPANIES: NOT PUBLICLY IDENTIFIED | CURRENT NAV: NOT DISCLOSED | SECURITY TYPE OF UNDERLYING PRIVATE INVESTMENT: NOT DISCLOSED | MANAGEMENT FEE / CARRY: REQUIRES SERIES DOCUMENTS | PRIMARY VS SECONDARY EXPOSURE: NOT DISCLOSED.
CORE INVESTOR QUESTIONS
Which private company or pre-identified companies does Series E1A own | Is the investment primary, secondary or tender-offer exposure | Why is E1A only $350K while B1A targets $100M and A1B closed above $15M | Do series designations correspond to different portfolio companies, different investor classes or different purchase lots | Are the two E1A investors affiliated | What valuation and share price were used | Does the underlying company recognize and approve the SPV | Are shares subject to ROFR, transfer restrictions or issuer consent | What management fee and carried interest does Mannsion charge | Does Mannsion invest sponsor capital alongside investors | How are expenses allocated among series | Can one series buy from or sell to another Mannsion vehicle | What independent valuation process applies before an IPO, tender or secondary exit | What happens if the underlying issuer rejects a transfer
CORE RISKS
Underlying asset not publicly disclosed | private-company valuation risk | single-company or concentrated exposure | secondary-market liquidity risk | issuer ROFR and transfer restrictions | late-stage valuation compression | IPO timing risk | tender-offer dependence | series-level fee differences | placement-agent economics vary across vehicles | cross-series allocation conflicts | two-investor concentration in E1A | $100M B1A target should not be interpreted as capital already raised | Mannsion SX / SpaceX evidence should not be attributed to Overlook without direct documentation.
INDEPENDENT CONCLUSION
Overlook X1 is a strong example of why private-market Form D research should follow the manager's legal architecture rather than treat every filing as a conventional standalone fund. The latest E1A vehicle is tiny and fully subscribed, while other 2026 Overlook series range from $15.35 million fully sold to a $100 million launch-stage target. The common manager, address and David Mann relationship tie the series together, while Mannsion's own description of pre-identified private-company funds explains why the platform may create separate legal sleeves around individual late-stage allocations.
The remaining diligence problem is identifying what each sleeve actually buys. FilingDossier should verify the underlying company, share class, transaction type, company approval, valuation, fees and transfer rights series by series rather than infer holdings from naming conventions or other Mannsion vehicles. Form D confirms the exempt offerings and Mannsion relationship; it does not mean that the SEC approved Overlook X1, The Mannsion Group, any private company, secondary-market valuation or future investment return.
PRIMARY EVIDENCE REVIEWED
U.S. Securities and Exchange Commission / September 18, 2026 Form D — Overlook X1 LP - Series E1A — CIK 0002155670 — $350K fully sold — 2 investors — $250K minimum — Rule 506(b) — Section 3(c)(7).
U.S. Securities and Exchange Commission — OVERLOOK X1 LP SERIES A1B — CIK 0002115112 — March 4, 2026 — $15,349,401 fully sold — 11 investors — Kingswood Capital Partners — approximately $108K sales commissions.
SEC-derived Form D records — Overlook X1 LP Series B1A — $100M offering / $0 sold at July 2026 launch — and Overlook X1 Series C1B — $25M offering with partial subscription.
The Mannsion Group official website — late-stage growth strategy, family-office / UHNW investor focus, company-approved primary / secondary / tender transactions and use of diversified funds containing pre-identified names.
FINRA BrokerCheck — Mannsion-related disclosure describing Mannsion SX LLC as a vehicle formed to invest directly or indirectly in Space Exploration Technologies Corporation, supporting the sponsor's company-specific access-vehicle model without establishing any SpaceX ownership by Overlook X1.
IMPORTANT FORM D NOTICE:
Form D is a notice filing for an exempt securities offering. It does not mean that the SEC approved Overlook X1 LP - Series E1A, The Mannsion Group, David Mann, any underlying private company, purchase price, valuation, management fee, carried interest or future investment performance.