INDEPENDENT VERDICT
Institutional Drilling Fund III LP is a 2026 oil-and-gas partnership sponsored directly by U.S. Energy Development Corporation, but its SEC record is unusual for a reason that has nothing to do with headline scale. The offering targets $250 million under Rule 506(c) with a $100,000 minimum investment, yet the issuer has filed a long sequence of amendments in which the reported first-sale date and amount sold change repeatedly. The latest reviewed September 14, 2026 filing reports a first sale of August 31, $100,000 sold, zero investors in Item 14, estimated sales commissions of $3.75 million and an estimated $5 million payment to the managing general partner described as a 2% expense reimbursement. Earlier amendments reported other first-sale dates and sold amounts, including $105,000, $200,000 and $492,500. That means this fund should not be analyzed using a simplistic "cumulative capital raised" assumption across amendments. The strongest verified facts are the $250 million target, USEDC sponsor identity, Westmoreland distribution infrastructure and the repeated amendment pattern itself.
THE SPONSOR CONNECTION IS DIRECT, NOT INFERRED
Institutional Drilling Fund III LP, CIK 0002107894 and SEC File No. 021-572882, is a Delaware limited partnership based at 601 E. Exchange Avenue, Suite 100, Fort Worth, Texas. The Form D identifies U.S. Energy Development Corporation as the Managing General Partner and lists Matthew P. Iak and Jordan Jayson as officers and directors of that managing general partner. USEDC's own website uses the same Fort Worth address and identifies Matthew Iak as President of Capital Markets and a board member. The company also states that Iak has overseen more than $3.5 billion of capital raising since joining in 2005 and serves as CEO and President of affiliated broker-dealer Westmoreland Capital Corporation.
That broker-dealer relationship is visible in the fund's original February 2026 Form D. The filing identified Westmoreland Capital Corporation, CRD 11469, as the associated broker-dealer soliciting in all U.S. states. USEDC's own disclosures likewise state that securities sponsored by U.S. Energy Development Corporation are offered through Westmoreland Capital Corporation, an affiliate and FINRA/SIPC member. This gives the offering an unusually complete issuer-to-sponsor-to-distributor chain without having to rely on third-party database matching.
THE REPEATED AMENDMENTS ARE THE MOST IMPORTANT RESEARCH STORY
Institutional Drilling Fund III filed its original Form D in February 2026 with $0 sold and "first sale yet to occur." After that, the issuer filed numerous amendments during May, June, July, August and September. Some amendments report different first-sale dates and different sold amounts rather than a steadily increasing cumulative number. For example, one August 5 filing reported a July 28 first sale and $105,000 sold; an August 20 filing reported an August 12 first sale and $100,000 sold; the September 14 amendment reported an August 31 first sale and $100,000 sold. Other 2026 filing histories show figures such as $200,000 and $492,500 on separate amendments.
That pattern means the Form D series should be read cautiously. It may reflect separate subscriptions, corrections or administrative resets, but the public filings do not explain why first-sale dates and amount-sold fields repeatedly change. FilingDossier therefore does not sum every amendment into a single capital-raised figure and does not assume that $100,000 is the fund's total economic capitalization. The correct diligence question is why the issuer is filing so frequently and whether each amendment represents a corrected notice, separate closing or another administrative event.
THE ECONOMICS ARE MORE TRANSPARENT THAN THE ACTUAL ASSET POOL
The latest filing gives unusually specific offering-cost information. It reports a $250 million total offering, $100,000 minimum investment and an estimated $3.75 million of sales commissions, with the clarification "Dealer Manager Fee of 1.5%." It also estimates that $5 million of proceeds will be paid to the managing general partner and describes this as a 2.0% expense reimbursement payment. Those percentages line up directly with the full $250 million offering target: 1.5% equals $3.75 million and 2% equals $5 million.
That does not mean those full amounts have already been paid. Both are estimates associated with the targeted offering size, not evidence that the fund has raised all $250 million. This distinction is particularly important because the latest amendment reports only $100,000 sold. Investors should obtain the private placement memorandum to understand which expenses are charged only if capital is actually raised, whether dealer-manager fees are borne directly or indirectly by investors and whether the 2% expense reimbursement is capped at the disclosed amount.
FUND III IS PART OF A MUCH LONGER USEDC DRILLING-FUND SERIES
The official USEDC investor-resources site lists Institutional Drilling Fund I LP and Institutional Drilling Fund II LP alongside many other USEDC drilling partnerships, including 2016 through 2025 drilling funds and multiple auxiliary vehicles. Institutional Drilling Fund I itself has a revealing history: its SEC record shows that the issuer previously used the name USEDC 2024 Auxiliary Fund LP before becoming Institutional Drilling Fund I LP. That fund targeted $250 million, relied on Rule 506(c), required a $100,000 minimum and used the same U.S. Energy Development Corporation / Matthew Iak / Jordan Jayson sponsor chain.
Institutional Drilling Fund II subsequently continued the series, and Fund III now uses the same core architecture at USEDC's newer Fort Worth headquarters. This shows that Fund III is not a standalone oil-and-gas partnership created by an unknown sponsor. It belongs to a recurring institutional drilling program within a company that has sponsored direct energy investment partnerships for decades.
USEDC'S OPERATING PLATFORM IS MATERIAL TO THE INVESTMENT CASE
USEDC describes itself as a privately held exploration and production company founded in 1980. Its 2025 corporate materials state that it had invested in, operated or drilled approximately 4,000 wells across 13 states and Canada and had deployed more than $3 billion for itself and its partners. In April 2025, the company completed what it described as its largest acquisition at the time: approximately $390 million for roughly 20,000 net acres in Reeves and Ward counties in the Permian Basin. In 2026, USEDC announced plans to deploy up to $1 billion across U.S. upstream opportunities.
Those sponsor-level figures provide context for Institutional Drilling Fund III but are not the same as fund assets. The Form D does not identify which wells, leases, acreage packages or drilling programs Fund III will ultimately own. Investors should therefore distinguish between USEDC's company-wide operating history and the actual economics of the specific partnership.
FINAL ASSESSMENT
Institutional Drilling Fund III has a strong sponsor-verification trail and unusually explicit offering economics, but its 2026 Form D sequence deserves careful reading. The SEC record confirms a $250 million Rule 506(c) target, $100,000 minimum, U.S. Energy Development Corporation as managing general partner, Westmoreland distribution, a 1.5% dealer-manager fee and 2% estimated expense reimbursement. It also shows repeated amendments with shifting first-sale dates and sold amounts.
The central diligence issue is therefore not whether the sponsor exists. It is how to interpret the offering history and what underlying oil-and-gas assets investors are actually buying. A serious review should reconcile every subscription and amendment, identify the wells or development programs allocated to Fund III, determine whether investors receive working interests or indirect partnership exposure, understand production and decline assumptions, and model the effect of front-end distribution and reimbursement costs before relying on any projected return.
SEC SNAPSHOT
Brand: U.S. Energy Development Corporation / USEDC
Reviewed Vehicle: Institutional Drilling Fund III LP
CIK: 0002107894
SEC File No.: 021-572882
Latest Reviewed Form D/A: September 14, 2026
Jurisdiction: Delaware
Year Organized: 2026
Entity Type: Limited Partnership
Principal Business Address: 601 E. Exchange Ave. Suite 100 Fort Worth, Texas 76164
Phone: 682-305-2868
Industry: Oil & Gas
Federal Exemption: Rule 506(c)
Investment Company Act Exclusion: None specifically selected in reviewed filing
Offering Duration: One year or less
Total Offering: $250,000,000
Latest Reviewed Amount Sold: $100,000
Latest Reviewed First Sale: August 31, 2026
Minimum Investment: $100,000
Investors Reported: 0
Estimated Sales Commissions: $3,750,000
Dealer Manager Fee: 1.5%
Estimated Payment to Managing General Partner: $5,000,000
Expense Reimbursement: 2.0%
SPONSOR CHAIN
Managing General Partner: U.S. Energy Development Corporation
Matthew P. Iak: Officer and Director of Managing General Partner
Jordan Jayson: Officer and Director of Managing General Partner
Matthew Iak Current Official Role: President, Capital Markets Board Member
Jordan Jayson: CEO / Chairman leadership role within USEDC
Form D Signer: Matthew P. Iak
Signer Title: President of Capital Markets of the Managing General Partner
DISTRIBUTION CHAIN
Affiliated Broker-Dealer: Westmoreland Capital Corporation
CRD: 11469
Relationship: Affiliate of U.S. Energy Development Corporation
Matthew Iak Role: CEO and President of Westmoreland Capital Corporation
Original Fund III Solicitation: All U.S. states
Official USEDC Disclosure: USEDC-sponsored securities are offered through Westmoreland Capital Corporation.
ORIGINAL FEBRUARY 2026 FILING
Filing Type: New Form D
First Sale: Yet to occur
Total Offering: $250,000,000
Amount Sold: $0
Minimum: $100,000
Estimated Sales Commissions: $3,750,000
Estimated GP Payment: $5,000,000
Dealer Manager Fee: 1.5%
Expense Reimbursement: 2.0%
SELECTED 2026 AMENDMENT HISTORY
May 11, 2026: Amendment Reported Amount Sold: $50,000
June 24, 2026: Amendment Additional reported amount visible in filing history: $50,000
June 29, 2026: Amendment Filing history shows another reported subscription event
July 28 / August 5 cycle: Reported first sale: July 28 Amount Sold: $105,000
July 30 filing cycle: Reported Amount Sold: approximately $492,500 in third-party filing database
August 4 filing cycle: Reported Amount Sold: $200,000
August 20, 2026: First Sale Date: August 12, 2026 Amount Sold: $100,000
August 31 / September 14 cycle: First Sale Date: August 31, 2026 Amount Sold: $100,000
Research Significance: The sequence does not behave like one simple cumulative fundraising counter.
DATA-QUALITY WARNING
Do Not: Add every amendment amount together automatically.
Do Not: Assume the latest $100,000 equals total economic commitments since inception.
Do Not: Assume each amendment represents a new independent fundraise.
Correct Treatment: Use each Form D as a point-in-time regulatory disclosure and reconcile the issuer's subscription ledger or PPM before constructing a cumulative capital-raised figure.
FUND I PREDECESSOR
Current Name: Institutional Drilling Fund I LP
Previous SEC Name: USEDC 2024 Auxiliary Fund LP
CIK: 0002018684
Year Organized: 2022
Industry: Oil & Gas
Federal Exemption: Rule 506(c)
First Sale: December 30, 2024
Offering Target: $250,000,000
Minimum Investment: $100,000
Managing General Partner: U.S. Energy Development Corporation
Related Persons: Matthew Iak Jordan Jayson
Research Significance: Demonstrates continuity between USEDC's earlier auxiliary-fund architecture and the Institutional Drilling brand.
FUND II
Legal Name: Institutional Drilling Fund II LP
CIK: 0002057818
SEC File No.: 021-544158
Principal Historical Address: 1521 N. Cooper Street Suite 400 Arlington, Texas 76011
Current Sponsor: U.S. Energy Development Corporation
Research Significance: Confirms that Institutional Drilling Fund III belongs to an established numbered series rather than a single isolated vehicle.
OFFICIAL USEDC FUND FAMILY EVIDENCE
USEDC K-1 Portal Lists: Institutional Drilling Fund I LP Institutional Drilling Fund II LP USEDC 2025 Drilling Fund 1 LP USEDC 2025 Drilling Fund 2 LP USEDC 2024 Drilling Fund A LP USEDC 2024 B Drilling Fund LP USEDC 2023 Drilling Fund LP USEDC 2022 Drilling Fund LP USEDC 2021 Drilling Fund LP USEDC 2020 Drilling Fund LP Earlier annual drilling partnerships
Research Significance: Confirms a long-running family of direct-energy partnership offerings.
USEDC PLATFORM BACKGROUND
Founded: 1980
Business: Private exploration and production company
Headquarters: Fort Worth, Texas
Wells Invested In / Operated / Drilled: Approximately 4,000 in company materials published around 2025
Geographic History: 13 U.S. states and Canada
Capital Deployed: More than $3 billion according to 2025 official materials
2025 Permian Acquisition: Approximately $390 million
Acquired Acreage: Approximately 20,000 net acres
Counties: Reeves County, Texas Ward County, Texas
2026 Planned Deployment: Up to $1 billion
Important Distinction: These are USEDC corporate-platform figures, not assets or commitments of Institutional Drilling Fund III.
WEBSITE / ENTITY PENETRATION
Official Domain: usedc.com
Fund Sponsor: U.S. Energy Development Corporation
Sponsor Address Match: Confirmed
Matthew Iak Match: Confirmed
Jordan Jayson Match: Confirmed
Westmoreland Affiliation: Confirmed
CRD: 11469
Institutional Drilling Fund I on USEDC Investor Portal: Confirmed
Institutional Drilling Fund II on USEDC Investor Portal: Confirmed
Institutional Drilling Fund III Public Product Page: Not clearly identified in reviewed public marketing pages
Specific Fund III Wells: Not publicly confirmed
Specific Fund III Basins: Not publicly confirmed
Production Forecast: Not publicly confirmed
FIVE FACTS UNIQUE TO THIS CASE
- Institutional Drilling Fund III targets exactly $250 million with a $100,000 minimum under Rule 506(c).
- The filing estimates a $3.75 million dealer-manager fee, exactly 1.5% of the offering target.
- It also estimates a $5 million expense reimbursement to the managing general partner, exactly 2% of the target.
- The issuer filed numerous amendments in 2026 with changing first-sale dates and amount-sold fields, making naive cumulative fundraising calculations unreliable.
- The Institutional Drilling series sits inside a much older USEDC direct-energy platform, and Fund I itself previously carried the name USEDC 2024 Auxiliary Fund LP.
CORE INVESTOR QUESTIONS
- Why have Fund III's first-sale dates changed across amendments
- Why have reported amount-sold figures changed rather than increasing monotonically
- Which amendments are corrections versus actual new subscriptions
- What is the true cumulative subscribed capital as of the latest date
- How many beneficial investors have actually subscribed
- Why does Item 14 report zero investors when Item 13 reports capital sold
- Which wells or drilling projects are allocated to Fund III
- Which basins will the partnership invest in
- Does Fund III own direct working interests or interests through subsidiary entities
- What percentage of capital is allocated to drilling versus acquisition of existing production
- What operating fees does USEDC charge
- How does the 1.5% dealer-manager fee affect investor basis
- How is the 2% managing-GP reimbursement calculated and paid
- Are drilling and completion overruns borne by the partnership
- What commodity-price assumptions are used in projected returns
- What hedging program applies to Fund III production
- Who audits the partnership
- What reserve engineer or third party validates production assumptions
ENTITY-SPECIFIC RISKS
The repeated Form D amendments make cumulative fundraising interpretation unusually difficult. The latest amount-sold field should not be assumed to represent total historical subscriptions without reconciliation. Oil and gas drilling results can vary materially from geological and engineering forecasts. New wells typically experience production decline after initial output. Commodity prices can materially affect distributions and reserve economics. Drilling, completion and service costs can exceed estimates. A 1.5% dealer-manager fee and 2% sponsor expense reimbursement create identifiable offering-cost drag. Fund III's specific wells and portfolio composition are not visible in Form D. The sponsor's broad operating history does not guarantee the economics of any particular drilling partnership. Rule 506(c) filing is not SEC approval of reserves, drilling prospects or projected returns.
PRIMARY EVIDENCE REVIEWED
U.S. Securities and Exchange Commission Form D filed February 2026 for Institutional Drilling Fund III LP. U.S. Securities and Exchange Commission Form D/A filed August 20, 2026 for Institutional Drilling Fund III LP. September 14, 2026 Form D/A for Institutional Drilling Fund III LP. SEC filing history for the issuer showing repeated amendments throughout 2026. SEC Form D records for Institutional Drilling Fund I LP. SEC records for Institutional Drilling Fund II LP. U.S. Energy Development Corporation official K-1 partnership list. U.S. Energy Development Corporation official Matthew Iak biography. USEDC corporate materials describing operating history and capital deployment. Official USEDC disclosures identifying Westmoreland Capital Corporation as affiliated broker-dealer.
IMPORTANT FORM D NOTICE
Form D is a notice of an offering relying on an exemption from Securities Act registration and does not represent SEC approval, endorsement or verification of U.S. Energy Development Corporation, Institutional Drilling Fund III, Westmoreland Capital Corporation, any well, reserve estimate or projected return. Because the issuer has filed numerous amendments with changing first-sale dates and reported sales amounts, FilingDossier does not sum those filings into an unsupported cumulative fundraising figure. The $250 million figure is the offering target, not capital already raised.