INDEPENDENT ASSESSMENT
Cornerstone Summit Fund, LLC is a verifiable 2025 Texas private investment fund with a newly filed 2026 SEC Form D, but its public profile is materially different from the institutional managers reviewed elsewhere on FilingDossier. The September filing reports an indefinite Rule 506(c) offering, $500,000 sold, one investor, a $50,000 minimum investment and a first sale dated July 31, 2026. The fund uses 1517 FM 359 Road, Suite 400, Richmond, Texas 77406 and lists Usman Jamal Solaija and Umair Jamal Solaija as Executive Officers. Usman Solaija signed the Form D as Manager. The filing classifies Cornerstone Summit as a Pooled Investment Fund / Other Investment Fund and relies on Investment Company Act Section 3(c)(1).
What makes this filing distinctive is not its size. It is the amount of economic detail disclosed despite the lack of a public investment website or portfolio. Item 16 states that approximately $10,000 of offering proceeds is expected to be used for an annual management fee based on currently contemplated called capital, while also warning that additional transaction fees and expense reimbursements may apply under the governing documents. That is unusually useful Form D language because it gives investors a direct glimpse into manager economics before the private PPM is obtained.
The filing also says the fund had "No Aggregate Net Asset Value" at the time of filing even though $500,000 had already been sold. This is not necessarily inconsistent. Form D asks issuers to select a NAV range, and a newly launched vehicle may not yet have established or reported an aggregate NAV. But the combination of one investor, an indefinite offering, a first sale less than two months before filing and no public portfolio disclosure strongly suggests that Cornerstone Summit was still in an early capital-formation stage rather than operating as a mature multi-investor fund.
USMAN SOLAIJA, UMAIR SOLAIJA AND THE REAL-ESTATE OPERATING BACKGROUND
The most useful external evidence comes from the two named executives.
Usman Solaija's public professional profile identifies him with Arrant Ventures and describes him as a General Partner and Development Principal for commercial real-estate projects. His public activity also shows ties to Arrant Construction and other operating businesses involved in commercial construction, technology and property development. That background provides context for the individuals behind Cornerstone Summit, but it does not prove that Cornerstone Summit itself is a real-estate fund because the Form D classifies the issuer only as an "Other Investment Fund."
Umair Solaija also has an independently visible commercial real-estate and construction footprint. Better Business Bureau records identify him as the owner of Arrant Construction Inc., a Texas general contractor operating since 2020. Texas Department of Licensing and Regulation records additionally connect him to commercial projects including a Tropical Smoothie Cafe redevelopment in Beaumont and a Port of Peri Peri restaurant project in Austin.
Texas state project records provide another layer of operating evidence for both names. Usman Solaija appears as the filer for a 2025 Eye Level Learning Center build-out in McKinney and as contact on a 2025 Dunkin project in Longview. Umair Solaija appears as filer for a 2026 restaurant build-out in Spring and as representative or contact on other Texas commercial-development projects.
These records support a broader commercial-development background.
They do not establish Cornerstone Summit's exact investment strategy.
That distinction should remain explicit.
CORNERSTONE SUMMIT'S MOST DISTINCTIVE FORM D FEATURES
The September 2026 filing contains several characteristics that make Cornerstone Summit different from a typical venture or hedge fund article.
FIRST: RULE 506(c).
The offering relies on Rule 506(c), which permits general solicitation provided purchasers are accredited investors and the issuer takes reasonable steps to verify accredited status. The Form D does not identify a placement agent or broker-dealer and reports no sales commissions or finder's fees.
SECOND: ONE INVESTOR.
The filing reports exactly one investor.
That means the entire $500,000 sold amount came from one investor unless the Form D investor count is later amended.
A single-investor fund can function very differently from a broadly subscribed pooled vehicle. Governance, liquidity, side-letter rights and fee negotiations may all be more concentrated.
THIRD: INDEFINITE OFFERING.
There is no fixed target such as $5 million, $25 million or $100 million.
The total offering amount is reported as indefinite.
That means $500,000 should not be treated as "fund size."
It is the amount sold as of the filing date.
FOURTH: MANAGEMENT FEE DISCLOSED IN FORM D.
Item 16 reports an estimated $10,000 annual management fee based on currently contemplated called capital.
That fee equals approximately 2.0% of $500,000 if measured against the amount sold at filing.
However, the filing says the estimate is based on "currently contemplated called capital," so the exact effective rate should not be treated as fixed without the governing documents.
FIFTH: ADDITIONAL ECONOMICS MAY APPLY.
The filing explicitly states that additional transaction fees and expense reimbursements may apply.
That makes the PPM especially important.
The $10,000 Item 16 figure is not necessarily the full economic burden on investors.
$500K SOLD DOES NOT EQUAL NAV, DEPLOYED CAPITAL OR PORTFOLIO VALUE
The most important numerical distinction is simple:
$500,000 SOLD ≠ $500,000 CURRENT NAV ≠ $500,000 DEPLOYED ≠ $500,000 PORTFOLIO VALUE.
Form D reports securities sold to investors.
It does not tell readers whether the fund has:
called all committed capital deployed all proceeds purchased any investments realized gains or losses or maintained part of the capital in cash.
The filing specifically reports "No Aggregate Net Asset Value," which reinforces the need to avoid assigning a fund NAV from the securities-sold figure.
The first sale occurred July 31, 2026.
The Form D was signed September 11 and publicly filed in mid-September.
That short operating window is another reason to treat the vehicle as early-stage.
FUND STRATEGY: WHAT IS KNOWN AND WHAT IS NOT
The SEC filing does not disclose the actual portfolio mandate.
It does not identify the fund as:
real estate private equity venture capital credit public equities restaurant development construction or hospitality.
It is simply classified as:
Pooled Investment Fund Other Investment Fund.
Therefore FilingDossier does not infer that Cornerstone Summit invests in commercial real estate simply because Usman and Umair Solaija have commercial-development backgrounds.
That would be an unsupported jump.
The fund may invest in real estate or operating businesses.
It may also invest through a broader private-markets strategy.
The public record is not sufficient to decide.
This is precisely where article differentiation matters: the strongest conclusion is not a guessed strategy, but the gap between the managers' visible operating history and the fund's still-undisclosed mandate.
NO VERIFIED DEDICATED FUND WEBSITE
FilingDossier did not locate a clearly verified public website specifically for Cornerstone Summit Fund, LLC.
No public fund page was found that clearly publishes:
the legal fund name 1517 FM 359 Road Usman Solaija Umair Solaija the fund strategy portfolio companies investment criteria auditor administrator custodian or investor documents.
That absence is notable because the fund relies on Rule 506(c), which permits public solicitation.
A 506(c) structure does not require a public website, but investors should still expect enough documentation to independently verify the fund's terms and management chain.
Usman Solaija's public Arrant Ventures connection is relevant professional evidence.
Umair Solaija's Arrant Construction role is relevant operating evidence.
Neither should be substituted for an official Cornerstone Summit website.
MANAGER-LEVEL OPERATING EVIDENCE: COMMERCIAL REAL ESTATE, CONSTRUCTION AND QSR PROJECTS
The broader business history of the named executives is unusually concrete.
Usman Solaija's professional profile says he serves as a General Partner and Development Principal for commercial real-estate projects and associates him with Arrant Ventures.
Texas regulatory project records show his name connected to commercial build-outs and development work, including:
Eye Level Learning Center McKinney, Texas 2025 filing.
Dunkin Longview, Texas 2025 project estimated construction cost $1.3 million.
Umair Solaija appears across additional project records.
These include:
Port of Peri Peri Austin 2021 restaurant remodel approximately 3,900 square feet.
Tropical Smoothie Cafe Beaumont 2025 renovation estimated cost approximately $299,500.
Altiro Mexican Fast Spring 2026 new interior build-out estimated cost approximately $300,000.
A Sherman, Texas planning record also identifies Umair Solaija as representative for a commercial development involving Shops of Grayson Addition.
This history is useful because it shows that the two Cornerstone Summit executives have observable experience around operating businesses, construction and commercial property.
But this evidence belongs in the "manager background" section.
It should not be converted into fund holdings.
No reviewed source says Cornerstone Summit owns Dunkin, Tropical Smoothie, Port of Peri Peri or any other project.
MANAGEMENT FEE ECONOMICS: A RARE PUBLIC CLUE
The Item 16 fee disclosure deserves its own analysis because it is the most unusual feature of the filing.
The fund estimates:
$10,000 annual management fee
based on currently contemplated called capital.
With $500,000 sold, a simple ratio is:
$10,000 / $500,000 = 2.0%.
That may indicate economics broadly consistent with a 2% annual management fee.
But investors should not present "2% fee" as confirmed.
The filing explicitly calls the figure an estimate and ties it to called capital.
If the fund raises additional capital, the absolute fee could increase.
If only part of committed capital is called, the effective economics could differ.
There may also be:
transaction fees expense reimbursements organizational expenses legal fees tax-preparation fees audit expenses performance allocations carried interest or affiliated-company compensation.
The Form D explicitly warns that additional transaction fees and expense reimbursements may apply.
That makes this a strong diligence issue rather than merely a fee statistic.
ONE-INVESTOR CONCENTRATION
Cornerstone Summit's current investor base is exceptionally concentrated.
The filing reports:
AMOUNT SOLD: $500,000 INVESTORS: 1.
If those figures remain accurate, one investor currently represents 100% of reported subscribed capital.
That creates a different governance profile from a fund with 30 or 100 LPs.
Questions include:
Does the investor have special redemption rights
Does the investor have approval rights
Is there a side letter
Can one investor force an early liquidation
Will future investors receive the same economics
Does management plan to diversify the LP base
Does the current investor have preferred access to future deals
One-investor concentration is not inherently problematic.
But it is one of the defining characteristics of the fund at launch.
3(c)(1) STRUCTURE AND INVESTOR LIMITS
Cornerstone Summit relies on Section 3(c)(1) of the Investment Company Act.
This is a standard exclusion used by private funds.
The 3(c)(1) structure generally limits beneficial ownership to no more than 100 persons, subject to applicable rules and look-through provisions.
That is different from the 3(c)(7) structure used by many institutional funds, which is generally designed for qualified purchasers.
Cornerstone Summit's current one-investor structure is therefore far below the typical numerical ceiling of a 3(c)(1) fund.
The fund also uses Rule 506(c).
Those two provisions address different laws:
Rule 506(c) → Securities Act offering exemption.
Section 3(c)(1) → Investment Company Act exclusion.
They should not be conflated.
BROKER-DEALER AND DISTRIBUTION PROFILE
The Form D reports:
BROKER / DEALER: None BROKER CRD: None SALES COMMISSIONS: $0 FINDER'S FEES: $0.
This means no broker-dealer or placement agent was disclosed in the initial filing.
That can reduce placement-fee drag.
But it creates another diligence question under a 506(c) offering:
Who is actually soliciting investors
Investors should determine whether solicitation is handled directly by fund management, through registered representatives, through third-party marketers or through another channel.
If compensation is later paid to persons for capital raising, investors should verify whether those arrangements are properly documented and whether any Form D amendment is required.
TRANSPARENCY PROFILE
Cornerstone Summit currently has a mixed transparency profile.
Strong points:
SEC Form D directly identifies the issuer.
Usman and Umair Solaija are clearly named.
The address and telephone are disclosed.
The amount sold is disclosed.
Investor count is disclosed.
The filing discloses a management-fee estimate.
The filing discloses possible additional transaction fees and expense reimbursements.
Weak points:
No verified dedicated fund website.
No publicly identified investment strategy.
No portfolio disclosure.
No current NAV.
No auditor identified.
No administrator identified.
No custodian identified.
No fund counsel identified.
No performance record.
No public PPM.
No explanation of why the vehicle is branded "Cornerstone Summit."
That mix makes the fund a good example of why Form D should be treated as a starting point rather than a complete investment profile.
FINAL CONCLUSION
Cornerstone Summit Fund, LLC is a genuine Texas private fund with a current SEC Form D and identifiable management.
The filing verifies:
Cornerstone Summit Fund, LLC
CIK 0002154433
Texas LLC
2025 formation
Rule 506(c)
Section 3(c)(1)
indefinite offering
$500,000 sold
one investor
$50,000 minimum
first sale July 31, 2026
Usman Jamal Solaija
Umair Jamal Solaija.
Usman Solaija signed as Manager.
The fund's most unusual disclosure is Item 16.
It estimates approximately $10,000 in annual management fees based on currently contemplated called capital and explicitly notes that transaction fees and expense reimbursements may also apply.
At the current $500,000 amount sold, $10,000 is mathematically equivalent to 2%, although the actual contractual fee rate cannot be confirmed without the governing documents.
The managers also have independently observable operating backgrounds.
Usman Solaija is publicly associated with Arrant Ventures and commercial real-estate development.
Umair Solaija is publicly connected with Arrant Construction and multiple Texas commercial projects.
Those facts provide sponsor-level context.
They do not establish Cornerstone Summit's portfolio.
The fund's exact investment mandate remains undisclosed publicly.
That is the central diligence issue.
SEC SNAPSHOT
ISSUER: Cornerstone Summit Fund, LLC | CIK: 0002154433 | ENTITY: Texas LLC | YEAR ORGANIZED: 2025 | FORM D FILED: September 2026.
PRINCIPAL ADDRESS: 1517 FM 359 Road, Suite 400, Richmond, Texas 77406 | PHONE: 443-514-4480.
FUND TYPE: Pooled Investment Fund / Other Investment Fund | SECURITY: Pooled Investment Fund Interests | EXEMPTION: Rule 506(c) | ICA EXCLUSION: Section 3(c)(1).
FIRST SALE: July 31, 2026 | OFFERING: Indefinite | DURATION: More than one year.
AMOUNT SOLD: $500,000 | INVESTORS: 1 | MINIMUM INVESTMENT: $50,000 | SALES COMMISSIONS: $0 | FINDER'S FEES: $0.
AGGREGATE NAV FIELD: No Aggregate Net Asset Value.
RELATED PERSONS: Usman Jamal Solaija — Executive Officer | Umair Jamal Solaija — Executive Officer.
FORM D SIGNER: Usman Solaija | TITLE: Manager.
ITEM 16 RELATED-PERSON USE OF PROCEEDS: estimated $10,000 annual management fee based on currently contemplated called capital; filing states that additional transaction fees and expense reimbursements may apply.
IMPORTANT FEE DISTINCTION: $10K / $500K mathematically equals 2.0%, but Form D does not itself confirm a fixed 2% contractual management-fee rate.
WEBSITE / ENTITY PENETRATION
CORNERSTONE SUMMIT FUND LLC — SEC CONFIRMED.
DEDICATED OFFICIAL FUND WEBSITE — NOT LOCATED / NOT VERIFIED.
USMAN JAMAL SOLAIJA — SEC CONFIRMED AS EXECUTIVE OFFICER / MANAGER.
UMAIR JAMAL SOLAIJA — SEC CONFIRMED AS EXECUTIVE OFFICER.
USMAN SOLAIJA → Arrant Ventures / commercial real-estate development background — public professional evidence supports this relationship.
UMAIR SOLAIJA → Arrant Construction ownership / management — BBB-supported.
TEXAS COMMERCIAL PROJECT EVIDENCE → both names appear in public state project records associated with restaurant, retail and commercial development activity.
CORNERSTONE SUMMIT PORTFOLIO — NOT PUBLICLY DISCLOSED.
CORNERSTONE SUMMIT INVESTMENT STRATEGY — NOT PUBLICLY DISCLOSED BEYOND "OTHER INVESTMENT FUND."
CURRENT NAV — NOT PUBLICLY ESTABLISHED.
CURRENT AUM — DO NOT EQUATE WITH $500K SOLD.
AUDITOR — NOT PUBLICLY IDENTIFIED.
FUND ADMINISTRATOR — NOT PUBLICLY IDENTIFIED.
CUSTODIAN — NOT PUBLICLY IDENTIFIED.
LEGAL COUNSEL — NOT PUBLICLY IDENTIFIED.
PERFORMANCE — NOT PUBLICLY DISCLOSED.
CORE INVESTOR QUESTIONS
What exactly does Cornerstone Summit invest in | Is the fund focused on commercial real estate, operating businesses, private equity or another strategy | What assets have already been acquired since the July 31 first sale | Has all $500K been called | What is current NAV | Why does the filing report no aggregate NAV | Is the current sole investor affiliated with management | Does that investor have a side letter or special rights | What is the contractual management-fee rate | Is the estimated $10K annual management fee equivalent to a 2% fee under the LPA | What transaction fees can management receive | What expenses are reimbursed | Is there carried interest or a performance allocation | What is the target return | What is the target fund size if the offering is indefinite | Who is the auditor | Who is the administrator | Who holds fund cash and securities | Who prepares investor capital accounts | Does Arrant Ventures or another affiliated company receive fees from portfolio investments | How are related-party transactions approved | Who performs investor solicitation under Rule 506(c) | How is accredited-investor status verified
CORE RISKS
New-fund risk | one-investor concentration | no public investment strategy | no verified dedicated fund website | no disclosed portfolio | no established public NAV | indefinite offering size | management-fee and additional transaction-fee exposure | possible related-party expense reimbursement | key-person dependence on Usman and Umair Solaija | limited public service-provider transparency | Rule 506(c) solicitation compliance | 3(c)(1) investor-limit structure | no public performance history | manager operating background does not prove fund-level results | $500K sold is not current NAV or portfolio value.
INDEPENDENT CONCLUSION
Cornerstone Summit Fund is best understood as an early-stage private fund with a legitimate SEC filing but limited public fund-level transparency.
Its legal identity is clear.
Its managers are identifiable.
Its first $500,000 of securities sales are publicly disclosed.
Its first sale occurred July 31, 2026.
Its initial investor base consists of one reported investor.
The filing also provides an unusually useful fee clue: approximately $10,000 of annual management fees based on current called capital, plus potential transaction fees and expense reimbursements.
That makes Cornerstone Summit different from many new Form D issuers where virtually no economics are visible.
The management background also has real external evidence.
Usman Solaija has a public commercial-real-estate development profile.
Umair Solaija has an established commercial-construction footprint.
Texas government project records connect the names to multiple commercial projects.
But FilingDossier does not convert that experience into an unsupported conclusion that Cornerstone Summit is a commercial-real-estate fund.
The SEC filing itself does not say that.
The decisive next step is therefore strategy verification.
Investors should obtain the operating agreement, PPM, portfolio schedule, current capital account statement, detailed fee schedule, service-provider list and related-party transaction policy.
The central question is no longer whether Cornerstone Summit exists.
It is what the fund actually owns, how investor capital is being used and how much of the economics flow back to management and affiliated entities.
PRIMARY EVIDENCE REVIEWED
U.S. Securities and Exchange Commission / Form D — Cornerstone Summit Fund, LLC — CIK 0002154433 — Rule 506(c) — Section 3(c)(1) — $500K sold — one investor — $50K minimum — indefinite offering — first sale July 31, 2026.
Form D Item 16 — estimated $10,000 annual management fee based on currently contemplated called capital; additional transaction fees and expense reimbursements may apply.
Usman Solaija public professional profile — Arrant Ventures / General Partner / commercial real-estate development background.
Better Business Bureau — Arrant Construction Inc. — Umair J. Solaija identified as Owner.
Texas Department of Licensing and Regulation — public project records associated with Usman and Umair Solaija, including commercial restaurant and tenant-improvement projects in McKinney, Longview, Austin, Beaumont and Spring.
IMPORTANT FORM D NOTICE:
Form D is a notice filing for an exempt securities offering. It does not mean that the SEC approved Cornerstone Summit Fund, Usman Solaija, Umair Solaija, any potential portfolio company or real-estate asset, the fund's fee structure, valuations or future investment performance.