SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF
THE SECURITIES EXCHANGE ACT OF 1934

Hugoton Royalty Trust
(Exact name of registrant as specified in the Hugoton Royalty Trust Indenture)

Registrant's telephone number including area code: (877) 228-5083

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act: None

        Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes    [X]    No    [   ]

        Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.    [X]

        Indicate by check mark whether the registrant is an accelerated filer (as defined in Rule 12b-2 of the Securities Exchange Act of 1934). Yes    [X]    No    [   ]

        The aggregate market value of the units of beneficial interest of the trust, based on the closing price on the New York Stock Exchange as of June 30, 20032004 (the last business day of its most recently completed second fiscal quarter), held by non-affiliates of the registrant on that date was approximately $337$413 million.

        At March 5, 2004,February 28, 2005, there were 40,000,000 units of beneficial interest of the trust outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

        Listed below is the only document parts of which are incorporated herein by reference and the parts of this report into which the document is incorporated:

20032004 Annual Report to Unitholders—Part II

PART I

Item 1.    Business

        Hugoton Royalty Trust is an express trust created under the laws of Texas pursuant to the Hugoton Royalty Trust Indenture entered into on December 1, 1998 between XTO Energy Inc., as grantor, and NationsBank, N.A., as trustee. Bank of America, N.A., successor to NationsBank, N.A., is now the trustee of the trust. The principal office of the trust is located at 901 Main Street, Dallas, Texas 75202 (telephone number 877-228-5083).

        The trust's internet web site is www.hugotontrust.com. We make available free of charge, through our web site, our Annual Report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and all amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934. These reports are accessible through our internet web site as soon as reasonably practicable after we electronically file such material with, or furnish it to, the Securities and Exchange Commission.

        Effective December 1, 1998, XTO Energy (formerly known as Cross Timbers Oil Company) conveyed to the trust 80% net profits interests in certain predominantly natural gas producing working interest properties in Kansas, Oklahoma and Wyoming under three separate conveyances. In exchange for these net profits interest conveyances to the trust, 40 million units of beneficial interest were issued to XTO Energy. In April and May 1999, XTO Energy sold a total of 17 million units in the trust's initial public offering. In 1999 and 2000, XTO Energy also sold 1.3 million trust units to certain of its officers. The trust did not receive any proceeds from these sales of trust units. As of March 1, 2004,February 28, 2005, XTO Energy owned 21,705,893 units in the trust. Units are listed and traded on the New York Stock Exchange under the symbol "HGT."

        The net profits interests entitle the trust to receive 80% of the net proceeds from the sale of oil and gas from the underlying properties. Each month XTO Energy determines the amount of cash received from the sale of production and deducts property and production taxes, production expense, development and production costs and overhead.

        Net proceeds payable to the trust depend upon production quantities, sales prices of oil and gas and costs to develop and produce oil and gas in the prior month. If monthly costs exceed revenues for any of the three conveyances (one for each of the states of Kansas, Oklahoma and Wyoming), such excess costs must be recovered, with accrued interest, from future net proceeds of that conveyance and cannot reduce net proceeds from other conveyances.

        The trust is not liable for any production costs or liabilities attributable to the net profits interests. If at any time the trust receives net profits income in excess of the amount due, the trust is not obligated to return such overpayment, but net profits income payable to the trust for the next month will be reduced by the overpayment, plus interest at the prime rate.

        To the extent allowed, XTO Energy is responsible for marketing its production from the underlying properties under existing sales contracts or new arrangements on the best terms reasonably obtainable in the circumstances. See Item 2., "Pricing and Sales Information."

        Net profits income received by the trust on or before the last business day of the month is related to net proceeds received by XTO Energy in the preceding month, and is generally attributable to oil and gas production two months prior. The amount to be distributed to unitholders each month by the trustee is determined by:

        Adding—

(1)

net profits income received,

(2)

interest income and any other cash receipts and

(3)

cash available as a result of reduction of cash reserves, then

1

        Subtracting—

(1)

liabilities paid and

(2)

the reduction in cash available related to establishment of or increase in any cash reserve.

1

        The monthly distribution amount is distributed to unitholders of record within ten business days after the monthly record date. The monthly record date is generally the last business day of the month. The trustee calculates the monthly distribution amount and announces the distribution per unit at least ten days prior to the monthly record date.

        The trustee may establish cash reserves for contingencies. Cash held for such reserves, as well as for pending payment of the monthly distribution amount, may be invested in federal obligations or certificates of deposit of major banks.

        The trustee's function is to collect the net profits income from the net profits interests, to pay all trust expenses, and pay the monthly distribution amount to unitholders. The trustee's powers are specified by the terms of the trust indenture. The trust cannot engage in any business activity or acquire any assets other than the net profits interests and specific short-term cash investments. The trust has no employees since all administrative functions are performed by the trustee.

        Approximately 93%92% of the net profits income received by the trust during 2003,2004, as well as 96%94% of the estimated proved reserves of the net profits interests at December 31, 20032004 (based on estimated future net cash flows using year-end oil and gas prices), is attributable to natural gas. There has historically been a greater demand for gas during the winter months than the rest of the year. Otherwise, trust income generally is not subject to seasonal factors, nor dependent upon patents, licenses, franchises or concessions. The trust conducts no research activities.

Item 2.    Properties

        The net profits interests are the principal asset of the trust. The trustee cannot acquire any other assets, with the exception of certain short-term investments as specified under Item 1. The trustee may sell or otherwise dispose of all or any part of the net profits interests if approved by at least 80% of the unitholders, or upon termination of the trust. Otherwise, the trust may only sell up to 1% of the value of the net profits interests in any calendar year, pursuant to notice from XTO Energy of its desire to sell the related underlying properties. Any such sale must be for cash with the proceeds promptly distributed to the unitholders. The underlying properties are predominantly natural gas producing leases located in the states of Kansas, Oklahoma and Wyoming. The principal productive areas are the Hugoton area, Anadarko Basin and Green River Basin.

Hugoton Area

        Natural gas was discovered in the Hugoton area in 1922. With an estimated five million productive acres covering parts of Texas, Oklahoma and Kansas, the Hugoton area is one of the largest domestic natural gas producing areas in the United States.areas. More than 64 trillion cubic feet of natural gas have been produced from the Hugoton area. During 2003,2004, sales volumes from the underlying properties in the Hugoton area averaged approximately 27,80027,000 Mcf of gas per day and 7692 Bbls of oil per day.

        Most of the production from the underlying properties in the Hugoton area is from the Chase formation, at depths of 2,700 to 2,900 feet. XTO Energy has informed the trustee that it plans to develop other formations that underlie the 79,500 net acres held by production by the Chase formation wells, including the Council Grove between 2,950 and 3,400 feet, the Morrow between 6,000 and 6,300 feet, the Chester between 6,350 and 6,700 feet and the St. Louis between 7,500 and 8,000 feet. During 2004, a successful well was drilled to the Morrow and Chester horizons and an additional well is planned in 2005. XTO Energy has participated in 3-D seismic shoots covering 30,000 acres of XTO Energy's net acreage position beneath the Chase formation. Test wells have been drilled to delineate the Council Grove formation.

        XTO Energy continued its restimulation program in the Chase intervals, completing 3727 of these restimulations in 2003.2004. XTO Energy has informed the trustee that it plans to perform 3550 Chase

2

restimulations during 2004.2005. Some of the Chase restimulations involve adding perforations in a tighter interval of the formation that was previously bypassed.

2

        XTO Energy's future development plans for the underlying properties in the Hugoton area include:

•

additional compression to lower line pressures,



•

pumping unit installations,



•

opening new producing zones in existing wells,



•

drilling additional wells,



•

drilling deeper in existing wells to new producing zones, and



•

restimulating producing intervals in existing wells utilizing new technology.

        XTO Energy delivers most of its Hugoton gas production to a gathering and processing system operated by a subsidiary. This system collects approximately 63%60% of its throughput from underlying properties, which, in recent months, has been approximately 19,20016,800 Mcf per day from 270 wells. The gathering subsidiary purchases the gas from XTO Energy at the wellhead, gathers and transports the gas to its plant, and treats and processes the gas at the plant. The gathering subsidiary pays XTO Energy for wellhead volumes at a price of 80% to 85% of the net residue price received by XTO Energy's marketing affiliate. This affiliate currently sells the residue to a pipeline at a price based on the monthly pipeline index less $0.03 per MMBtu.

        Other Hugoton gas production is sold under a third party contract. Under the contract, XTO Energy receives 74.5% of the net proceeds received from the sale of the residue gas and liquids.

Anadarko Basin

        Oil and gas were discovered in the Anadarko Basin of western Oklahoma in 1945. Daily sales volumes from the underlying properties in the Anadarko Basin averaged 37,90034,400 Mcf and 794741 Bbls in 2003.2004. XTO Energy is one of the largest producers in the Ringwood, Northwest Okeene and Cheyenne Valley fields in Major County, the principal producing region of the underlying properties in the Anadarko Basin.

        The fields in the Major County area are characterized by oil and gas production from a variety of structural and stratigraphic traps. Productive zones range from 6,500 to 9,400 feet and include the Oswego, Red Fork, Inola, Chester, Manning, Mississippian, Hunton and Arbuckle formations.

        In Major and Woodward counties, the Mississippian (Osage), Chester and Red Fork formations were the primary drilling targets in 2003.2004. In Major County, XTO Energy successfully drilled four12 gross (3.2(8.6 net) wells.wells and performed seven workovers. XTO Energy plans to drill up to seveneight wells and perform up to ten workovers in Major County during 2004. In2005. The most significant increase in 2004 new well production occurred in Woodward County, the Chester formation, with its four separate producing intervals, was the primary target for 12where eight gross (9.8(7.4 net) wells were successfully drilled and completed during 2003.in the Chester formation and two workovers were performed. During 2004,2005, XTO Energy plans to drill up to five gross (4.7 net)ten wells and perform up to five workovers in Woodward County.

        XTO Energy plans to further develop the underlying properties in the Major County area primarily through:

•

mechanical stimulation of existing wells,



•

installing artificial lift,



•

opening new producing zones in existing wells,



•

deepening existing wells to new producing zones, and



•

drilling additional wells.

3

        A gathering subsidiary of XTO Energy operates a 300-mile gathering system and pipeline in the Major County area. The gathering subsidiary and a third-party processor purchase natural gas produced at the wellhead from XTO Energy and other producers in the area under various agreements including life-of-production contracts. The gathering subsidiary gathers and transports the gas to a third-party processor, which processes the gas and pays XTO Energy and other producers for at least 50% of the liquids processed. After the gas is processed, the gathering subsidiary transports the gas via a residue pipeline to a connection with an interstate pipeline. The gathering subsidiary sells the residue gas to the marketing subsidiary of XTO Energy based upon the average price of several published indices. The gathering subsidiary pays this price to XTO Energy less a compression and gathering fee of approximately $0.31 per Mcf of residue gas. This gathering fee was previously approved by the Federal Energy Regulatory Commission when the gathering subsidiary was regulated. During 2003,2004, the gathering system collected approximately 16,80015,000 Mcf per day from over 400 wells, approximately 70% of which XTO Energy operates. Estimated capacity of the gathering system is 35,000 Mcf per day. The gathering subsidiary also provides contract operating services to properties in Woodward County, collecting approximately 7,2009,700 Mcf per day from 6980 wells, for a historical average fee of approximately $0.12 per Mcf.

        XTO Energy also sells gas directly to its marketing subsidiary, which then sells the gas to third parties. The price paid to XTO Energy is based upon the average price of several published indices, but does not include a deduction for any marketing fees. The price paid by the marketing affiliate includes a deduction for any transportation fees charged by the third party.

Green River Basin

        The Green River Basin is located in southwestern Wyoming. Natural gas was discovered in the Fontenelle Field of the Green River Basin in the early 1970s. The producing reservoirs are the Cretaceous-aged Frontier, Baxter and Dakota sandstones at depths ranging from 7,500 to 10,000 feet.

        In 2003, dailyDaily 2004 sales volumes from the underlying properties in the Fontenelle Field averaged 20,60021,200 Mcf of natural gas and 3938 Bbls of oil. In 2004, XTO Energy successfully drilled sixseven wells and performed 11 workovers in 2003.13 workovers. XTO Energy has advised the trustee that it plans to perform up to seven workovers and may drill up to seventen wells in the Green River Basin during 2004.2005. XTO Energy also plans to further test reduction in pipeline pressure which has recently shown potential for increasing production in the Fontenelle Field.

        Potential development activities for the underlying properties in this area include:

•

installing artificial lift,



•

restimulating producing intervals utilizing new technology,



•

additional compression to lower line pressures,



•

opening new producing zones in existing wells,



•

deepening existing wells to new producing zones, and



•

drilling additional wells.

        XTO Energy markets the gas produced from the Fontenelle Unit and nearby properties under three different marketing arrangements. Under the agreement covering approximately 70% of the gas sold, XTO Energy compresses the gas on the lease, transports it off the lease and compresses the gas again prior to entry into the gas plant pipeline. The pipeline transports the gas 35 miles to the gas plant, where the gas is processed, then redelivered to XTO Energy and sold to XTO Energy's marketing subsidiary. The owner of the gas plant and related pipeline charges XTO Energy for operational fuel and processing. In 2003,2004, the fuel charge was 0.004%0.2% of the volumes produced and the processing fee was $0.053$0.054 per MMBtu. The marketing subsidiary then sells the residue gas to third parties based upon a spot sales price and pays the net sales proceeds to XTO Energy. The marketing subsidiary does not receive a marketing fee. The gas not sold under the above arrangement is sold either under a similar arrangement where the fee is $0.15 per

4

MMBtu, or under a contract where XTO Energy directly sells the gas to a third party on the lease at an adjusted index price. Condensate is sold at the lease to an independent third party at market rates.

4

Producing Acreage and Well Counts

        For the following data, "gross" refers to the total wells or acres on the underlying properties in which XTO Energy owns a working interest and "net" refers to gross wells or acres multiplied by the percentage working interest owned by XTO Energy. Although many of XTO Energy's wells produce both oil and gas, a well is categorized as an oil well or a gas well based upon the ratio of oil to natural gas production.

        The underlying properties are interests in developed properties located primarily in gas producing regions of Kansas, Oklahoma and Wyoming. The following is a summary of the approximate producing acreage of the underlying properties at December 31, 2003.2004. Undeveloped acreage is not significant.

        The following is a summary of the producing wells on the underlying properties as of December 31, 2003:2004:

        The following is a summary of the number of wells drilled on the underlying properties during the years indicated. Unless otherwise indicated, all wells drilled are developmental. There were fourfive gross (1.4(2.9 net) wells in process of drilling at December 31, 2003.2004.

(a)

Included in completed gas wells are wells drilled on nonoperated interests totaling seven gross (1.07 net) in 2004, two gross (0.67 net) in 2003 6and six gross (0.48 net) in 2002 and 6 gross (1.3 net) in 2001.2002.

5

Oil and Gas Production

        Trust production is recognized in the period net profits income is received, which is the month following receipt by XTO Energy, and generally two months after the time of production. Oil and gas production and average sales prices attributable to the underlying properties and the net profits interests for the three years ended December 31, 20032004 were as follows:

Oil and Natural Gas Reserves

General

        Miller and Lents, Ltd., independent petroleum engineers, has estimated oil and gas reserves attributable to the underlying properties as of December 31, 2004, 2003, 2002 2001 and 2000.2001. The estimated reserves for the underlying properties are then used by XTO Energy to calculate the estimated oil and gas reserves attributable to the net profits interests. Numerous uncertainties are inherent in estimating reserve volumes and values, and such estimates are subject to change as additional information becomes available. The reserves actually recovered and the timing of production of these reserves may be substantially different from the original estimates.

        Reserve quantities and revenues for the net profits interests were estimated from projections of reserves and revenues attributable to the combined interests of the trust and XTO Energy in the subject properties. Since the trust has defined net profits interests, the trust does not own a specific percentage of the oil and gas reserve quantities. Accordingly, reserves allocated to the trust pertaining to its 80% net profits interests in the properties have effectively been reduced to reflect recovery of the trust's 80% portion of applicable production and development costs, excluding overhead. Because trust reserve quantities are determined using an allocation formula, any fluctuations in actual or assumed prices or costs will result in revisions to the estimated reserve quantities allocated to the net profits interests.

        The standardized measure of discounted future net cash flows and changes in such discounted cash flows as presented below are prepared using assumptions required by the Financial Accounting Standards Board. These assumptions include the use of year-end prices for oil and gas and year-end costs for estimated future development and production expenditures to produce the proved reserves. Because natural gas prices are influenced by seasonal demand, use of year-end prices, as required by the Financial Accounting Standards Board, may not be the most representative in estimating future revenues or reserve data. Future net cash flows are discounted at an annual rate of 10%. No provision is included for federal income taxes since future net cash flows are not subject to taxation at the trust level.

6

        Estimated costs to plug and abandon wells on the underlying properties at the end of their productive lives have not been deducted from cash flows since this is not a legal obligation of the trust. SuchThese costs are the legal obligation of XTO Energy as the owner of the underlying working interests and will only be deducted from net proceeds payable to the trust if net proceeds from the related conveyance exceed such costs when paid.paid, subject to excess cost carryforward provisions as described under Item 1. Business.

        Year-end weighted average realized gas prices used to determine the standardized measure were $5.68 per Mcf in 2004, $5.76 per Mcf in 2003, $4.37 per Mcf in 2002 and $2.34 per Mcf in 2001 and $9.44 per Mcf in 2000.2001. Year-end oil prices used to determine the standardized measure were based on a West Texas Intermediate crude oil posted price of $40.25 per Bbl in 2004, $29.25 per Bbl in 2003, $28.00 per Bbl in 2002 and $16.75 per Bbl in 2001 and $23.75 per Bbl in 2000.2001.

Proved Reserves

        Extensions, additions and discoveries in 2002, 2003 and additions in 2001, 2002 and 20032004 are primarily related to delineation of additional proved undeveloped reserves in the Anadarko Basin. Revisions of prior estimates of the proved gas reserves for the underlying properties in each year are primarily because of changes in the year-end gas price.price and projected costs. Higher upward and downward revisions for the net profits interests as compared with the underlying properties in each year were caused by changes in year-end oil and gas prices which resulted in an increase or decrease in gas reserves allocated to the trust.

Proved Developed Reserves

7

Standardized Measure of Discounted Future Net Cash Flows from Proved Reserves

8

Changes in Standardized Measure of Discounted Future Net Cash Flows from Proved Reserves

(a)

Revisions were primarily caused by the changes in year-end gas prices.prices and projected costs.

8

Regulation

Natural Gas Regulation

        The interstate transportation and sale for resale of natural gas is subject to federal regulation, including transportation rates charged, storage tariffs and various other matters, by the Federal Energy Regulatory Commission. Federal price controls on wellhead sales of domestic natural gas terminated on January 1, 1993. While natural gas prices are currently unregulated, Congress historically has been active in the area of natural gas regulation. It is impossible to predict whether new legislation to regulate natural gas might be proposed, what proposals, if any, might actually be enacted, and what effect, if any, such proposals might have on the operations of the underlying properties.

Environmental Regulation

        Companies that are engaged in the oil and gas industry are affected by federal, state and local laws regulating the discharge of materials into the environment. Those laws may impact operations of the underlying properties. No material expenses have been incurred on the underlying properties in complying with environmental laws and regulations. XTO Energy does not expect that future compliance will have a material adverse effect on the trust.

9

State Regulation

        The various states regulate the production and sale of oil and natural gas, including imposing requirements for obtaining drilling permits, the method of developing new fields, the spacing and operation of wells and the prevention of waste of oil and gas resources. The rates of production may be regulated and the maximum daily production allowables from both oil and gas wells may be established on a market demand or conservation basis, or both.

State Income Tax Withholding

        Several states have enacted legislation to require state income tax withholding from nonresident royalty owners.recipients of oil and gas proceeds. After consultation with legalits state tax counsel, XTO Energy has advised the trustee that it believes the trust is not subject to these withholding requirements. However, regulations are being developed or are subject to change by the various states, which could change this conclusion. In the event it is determined that the trust is required to withhold state taxes, distributions to the unitholders would be reduced by the required amount, subject to the unitholder's right to file a state tax return to claim any refund due.

Other Regulation

        The Minerals Management Service of the United States Department of the Interior continues to evaluate existing methods of settling royalties on federal and Native American oil and gas leases. Seven percent of the net acres of the underlying properties, primarily located in Wyoming, involve federal leases. Although a change in the final rules could cause an increase in the federal royalties to be paid on these properties, and, correspondingly, decrease the revenue to XTO Energy and the trust, XTO Energy's management does not believe that any rule changes will have a significant detrimental effect on trust distributions.

        The petroleum industry is also subject to compliance with various other federal, state and local regulations and laws, including, but not limited to, regulations and laws relating to environmental protection, occupational safety, resource conservation and equal employment opportunity. XTO Energy has advised the trustee that it does not believe that compliance with these laws will have any material adverse effect upon the unitholders.

Tight Sands Tax Credit9

        The trust receives net profits income from tight sands wells, certain production from which qualified for the federal income tax credit for producing nonconventional fuels under Section 29 of the Internal Revenue Code. The Section 29 tax credit was available for tight sands gas produced and sold through 2002 from wells drilled prior to January 1, 1993 and after November 5, 1990, or after December 31, 1979 if the related formation was dedicated to interstate commerce as of April 20, 1977. Unitholders should be entitled to this tax credit with respect to royalty income reported in 2003 relating to sales of qualifying production through December 31, 2002. This tax credit was approximately $0.52 per MMBtu. Such credit, calculated based on the unitholder's pro rata share of qualifying production, may not reduce the unitholder's regular tax liability (after the foreign tax credit and certain other nonrefundable credits) below his tentative minimum tax. Any part of the Section 29 credit not allowed for the tax year solely because of this limitation is subject to certain carryover provisions. Congress is considering a new energy bill in 2004, but has not yet passed legislation that extends or renews the tight sands tax credit. Therefore, there currently is no significant benefit expected for future years.

Pricing and Sales Information

        A subsidiary of XTO Energy purchases most of XTO Energy's natural gas production at thea monthly published index price, then sells the gas to third parties for the best available price. Any marketing gains or losses are not included in trust net proceeds. Oil production is generally marketed at the wellhead to third parties at the best available price. XTO Energy arranges for some of its natural gas to be processed by unaffiliated third parties and markets the natural gas liquids. The natural gas attributable to the underlying properties is marketed under contracts existing at trust inception. Contracts covering production from the Ringwood area of the Major County area are generally for the life of the lease, and the contract for the majority of production from the Hugoton area expires in 2004.was extended through 2006. If new contracts are entered with unaffiliated third parties, the proceeds from sales under those new contracts will be included in gross proceeds from the underlying properties.

10

If new contracts are entered with XTO Energy's marketing subsidiary, it may charge XTO Energy a fee that may not exceed 2% of the sales price of the oil and natural gas received from unaffiliated parties. The sales price is net of any deductions for transportation from the wellhead to the unaffiliated parties and any gravity or quality adjustments.

Item 3.    Legal Proceedings

        On April 3, 1998, a class action lawsuit,Booth, et al. v. Cross Timbers Oil Company, was filed in the District Court of Dewey County, Oklahoma by royalty owners of natural gas wells in Oklahoma. The plaintiffs alleged that since 1991, XTO Energy underpaid royalty owners as a result of reducing royalties for improper charges for production, marketing, gathering, processing and transportation costs and selling natural gas through affiliated companies at prices less favorable than those paid by third parties. The parties agreed on a settlement that the court approved in April 2003 and was paid in July 2003. The portion of this settlement related to the production from the underlying properties since December 1, 1998, the effective date of the trust, was $1,040,831. The settlement reduced royalty income paid to the trust in August 2003 and the distribution paid to unitholders in September by $832,665, or 2.1 cents per unit. The effect of the settlement on future distributions will not be significant.

        On October 17, 1997, an action, styledUnited States of America ex rel. Grynberg v. Cross Timbers Oil Company, et al., was filed in the United States District Court for the Western District of Oklahoma. This lawsuitOklahoma by Jack J. Grynberg on behalf of the United States under thequi tam provisions of the U.S. False Claims Act against XTO Energy. The plaintiff alleges that XTO Energy underpaid royalties on natural gas produced from federal leases and lands owned by Native Americans in amounts in excess of 20% as a result of mismeasuring the volume of natural gas, and wrongfullyincorrectly analyzing its heating content and improperly valuing the natural gas during at least the past ten years. The suit, which was brought under thequi tam provisions of the U.S. False Claims Act,plaintiff seeks treble damages for the unpaid royalties (with interest)interest, attorneys fees and expenses), civil penalties between $5,000 and $10,000 for each violation of the U.S. False Claims Act, and an order for XTO Energy to cease the allegedly improper measuring practices. The casesThis lawsuit against XTO Energy and similar lawsuits filed by Grynberg against more than 300 other defendantscompanies have been consolidated in the United States District Court for Wyoming. In October 2002, the court granted a motion to dismiss Grynberg's royalty valuation claims, and Grynberg's appeal of this decision was dismissed for lack of appellate jurisdiction in May 2003. The parties have completed discovery regarding whether the plaintiff has met the jurisdictional prerequisites for maintaining an action under the U.S. False Claims Act. In June 2004, XTO Energy joined with other defendants in filing a motion to dismiss, contending that the plaintiff has not satisfied the jurisdictional requirements to maintain this action. A hearing on this motion has been scheduled for March 2005. While XTO Energy is unable to predict the outcome of this case or estimate the amount of any possible loss, it has informed the trustee that it believes that the allegations of this lawsuit are without merit and intends to vigorously defend the action. However, an order to change measuring practices or a related settlement could adversely affect the trust by reducing net proceeds in the future by an amount that is presently not determinable, but, in XTO Energy management's opinion, is not currently expected to be material to the trust's annual distributable income, financial position or liquidity.

        Certain of the trustunderlying properties are involved in various other lawsuits and certain governmental proceedings arising in the ordinary course of business. XTO Energy has advised the trustee that it does not believe that the ultimate resolution of these claims will have a material effect on trust annual distributable income, financial position or liquidity.

Item 4.    Submission of Matters to a Vote of Security Holders

        No matters were submitted to a vote of unitholders during 2003.2004.

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PART II

Item 5.    Market for Units of the Trust, Related Security Holder Matters and Trust Purchases of Units

        The section entitled "Units of Beneficial Interest" in the trust's annual report to unitholders for the year ended December 31, 20032004 is incorporated herein by reference.

        The trust has no equity compensation plans, nor has it purchased any units during the period covered by this report.

Item 6.    Selected Financial Data

Item 7.    Management's Discussion and Analysis of Financial Condition and Results of Operations

        The "Trustee's Discussion and Analysis" of financial condition and results of operations for the three-year period ended December 31, 20032004 in the trust's annual report to unitholders for the year ended December 31, 20032004 is incorporated herein by reference.

Liquidity and Capital Resources

        The trust's only cash requirement is the monthly distribution of its income to unitholders, which is funded by the monthly receipt of net profits income after payment of trust administration expenses. The trust is not liable for any production costs or liabilities attributable to the net profits interests. If at any time the trust receives net profits income in excess of the amount due, the trust is not obligated to return such overpayment, but future net profits income payable to the trust will be reduced by the overpayment, plus interest at the prime rate.

        The trust does not have any transactions, arrangements or other relationships with unconsolidated entities or persons that could materially affect the trust's liquidity or the availability of capital resources.

Off-Balance Sheet Arrangements

        The trust has no off-balance sheet financing arrangements. The trust has not guaranteed the debt of any other party, nor does the trust have any other arrangements or relationships with other entities that could potentially result in unconsolidated debt, losses or contingent obligations.

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Contractual Obligations

        As shown below, the trust had no obligations and commitments to make future contractual payments as of December 31, 2003,2004, other than the December distribution payable to unitholders in January 2004,2005, as reflected in the statement of assets, liabilities and trust corpus.

11

Related Party Transactions

        The underlying properties from which the net profits interests were carved are currently owned by XTO Energy, which operates approximately 94%95% of the underlying properties. In computing net proceeds, XTO Energy deducts a monthly overhead charge for reimbursement of administrative expenses on the underlying properties it operates. As of December 31, 2003,2004, the monthly overhead charge was approximately $606,000$637,000 ($484,800509,600 net to the trust) and is subject to annual adjustment based on an oil and gas industry index. As of March 1, 2004,February 28, 2005, XTO Energy owned 21,705,893, or 54.3%, of the 40,000,000 outstanding units.

        XTO Energy sells a significant portion of natural gas production from the underlying properties to certain of XTO Energy's wholly owned subsidiaries under contracts in existence when the trust was created, generally at amounts approximating monthly published market prices. For further information regarding natural gas sales from the underlying properties to affiliates of XTO Energy, see Item 2, Properties, and Note 6 to Financial Statements in the trust's annual report to unitholders for the year ended December 31, 2003.2004. Total gas sales from the underlying properties to XTO Energy's wholly owned subsidiaries were $81.7 million, or 54% of total gas sales, for the year ended December 31, 2004, $76.5 million, or 54% of total gas sales, for the year ended December 31, 2003 and $59.1 million, or 54%71% of total gas sales, $59.1 million for the year ended December 31, 2002, or 71% of total gas sales and $128.5 million for the year ended December 31, 2001, or 82% of total gas sales.2002.

Critical Accounting Policies

        The financial statements of the trust are significantly affected by its basis of accounting and estimates related to its oil and gas properties and proved reserves, as summarized below.

Basis of Accounting

        The trust's financial statements are prepared on a modified cash basis, which is a comprehensive basis of accounting other than generally accepted accounting principles. This method of accounting is consistent with reporting of taxable income to trust unitholders. The most significant differences between the trust's financial statements and those prepared in accordance with generally accepted accounting principles are:

•

Net profits income is recognized in the month received rather than accrued in the month of production.



•

Expenses are recognized when paid rather than when incurred.



•

Cash reserves may be established by the trustee for certain contingencies that would not be recorded under generally accepted accounting principles.

        This comprehensive basis of accounting other than generally accepted accounting principles corresponds to the accounting permitted for royalty trusts by the U.S. Securities and Exchange Commission, as specified by Staff Accounting Bulletin Topic 12:E, Financial Statements of Royalty Trusts. For further information regarding the trust's basis of accounting, see Note 2 to Financial Statements in the trust's annual report to unitholders for the year ended December 31, 2003.2004.

        All amounts included in the trust's financial statements are based on cash amounts received or disbursed, or on the carrying value of the net profits interests, which was derived from the historical cost of the interests at the date of their

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transfer from XTO Energy, less accumulated amortization to date. Accordingly, there are no fair value estimates included in the financial statements based on either exchange or nonexchange trade values.

Oil and Gas Reserves

        The trust's proved oil and gas reserves for the underlying properties are estimated by independent petroleum engineers. The estimated reserves for the underlying properties are then used by XTO Energy to calculate the estimated oil and gas reserves attributable to the net profits interests. Reserve engineering is a subjective process that is dependent upon the quality of available data and the interpretation thereof.

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Estimates by different engineers often vary, sometimes significantly. In addition, physical factors such as the results of drilling, testing and production subsequent to the date of an estimate, as well as economic factors such as changes in product prices, may justify revision of such estimates. Because proved reserves are required to be estimated using prices at the date of the evaluation, estimated reserve quantities can be significantly impacted by changes in product prices. Accordingly, oil and gas quantities ultimately recovered and the timing of production may be substantially different from original estimates.

        The standardized measure of discounted future net cash flows and changes in such cash flows, as reported in Item 2, is prepared using assumptions required by the Financial Accounting Standards Board and the Securities and Exchange Commission. Such assumptions include using year-end oil and gas prices and year-end costs for estimated future development and production expenditures. Discounted future net cash flows are calculated using a 10% rate. Changes in any of these assumptions, including consideration of other factors, could have a significant impact on the standardized measure. Accordingly, the standardized measure does not represent XTO Energy's or the trustee's estimated current market value of proved reserves.

Forward-Looking Statements

        Certain information included in this annual report and other materials filed, or to be filed, by the trust with the Securities and Exchange Commission (as well as information included in oral statements or other written statements made or to be made by XTO Energy or the trustee) contain forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, and Section 27A of the Securities Act of 1933, as amended, relating to the trust, operations of the underlying properties and the oil and gas industry. Such forward-looking statements may concern, among other things, development activities, increased density drilling, maintenance projects, development, production and other costs, oil and gas prices, pricing differentials, proved reserves, production levels, litigation, regulatory matters and competition. Such forward-looking statements are based on XTO Energy's current plans, expectations, assumptions, projections and estimates and are identified by words such as "expects," "intends," "plans," "projects," "anticipates," "predicts," "believes," "goals," "estimates," "should," "could", and similar words that convey the uncertainty of future events. These statements are not guarantees of future performance and involve certain risks, uncertainties and assumptions that are difficult to predict. Therefore, actual results may differ materially from expectations, estimates or assumptions expressed in, implied in, or forecasted in such forward-looking statements. Some of the risk factors that could cause actual results to differ materially are discussed below.

        Oil and Gas Price Fluctuations.    The trust's monthly cash distributions are highly dependent upon the prices realized from the sale of gas and, to a lesser extent, oil. Oil and gas prices can fluctuate widely on a month-to-month basis in response to a variety of factors that are beyond the control of the trust and XTO Energy. Factors that contribute to price fluctuations include instability in oil-producing regions, worldwide economic conditions, weather conditions, the supply and price of foreign oil and gas, consumer demand, and the price and availability of alternative fuels. Moreover, government regulations, such as regulation of natural gas transportation and price controls, can affect product prices in the long term. Lower oil and gas prices may reduce the amount of oil and gas that is economic to produce and will reduce net profits available to the trust. The volatility of energy prices reduces the predictability of future cash distributions to trust unitholders.

        Increased Production Expense and Development Costs.    Production andexpense, development costs and overhead are deducted in the calculation of the trust's share of net proceeds. Accordingly, higher or lower production andexpense, development costs and overhead, without concurrent increases in revenue, will directly decrease or increase the amount received by the trust for its net profits interests. If production expense, development costs and production costsoverhead in a particular state exceed the production proceeds from the properties, the trust will not receive net proceeds for those properties until future proceeds from production in that state exceed the total of the excess costs plus accrued interest during the deficit period. Development activities may not generate sufficient additional revenue to repay the costs.

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        Reserve Estimates.    Estimating reserves is inherently uncertain. Petroleum engineers consider many factors and make assumptions in estimating reserves and future net cash flows. Lower oil and gas prices generally cause lower estimates of proved reserves. Ultimately, actual production, revenues and expenditures for the underlying properties will vary from estimates and those variationsvariances could be material. The trust's reserve quantities are based on estimates of reserves for the underlying properties. The method of allocating a portion of those reserves to the trust is complicated because the trust holds an interest in net profits and does not own a specific percentage of the oil and gas reserves.

        Operating Risks.    The occurrence of drilling, production or transportation accidents at any of the underlying properties will reduce trust distributions by the amount of uninsured costs. These accidents may result in personal injuries, property damage, damage to productive formations or equipment and environmental damages. Any uninsured costs would be deducted as production costsexpense in calculating net proceeds payable to the trust.

        Trust's Assets are Depleting Assets.    The net proceeds payable to the trust are derived from the sale of depleting assets. Accordingly, the portion of the distributions to trust unitholders attributable to depletion may be considered a return of capital. The reduction in proved reserve quantities is a common measure of the depletion. Future maintenance and development projects on the underlying properties will affect the quantity of proved reserves. The timing and size of these projects will depend on the market prices of oil and gas. If operators of the properties do not implement additional maintenance and development projects, the future rate of production decline of proved reserves may be higher than the rate currently expected by XTO Energy.

Item 7a.7A.    Quantitative and Qualitative Disclosures about Market Risk

        The only assets of and sources of income to the trust are the net profits interests, which generally entitle the trust to receive a share of the net profits from oil and gas production from the underlying properties. Consequently, the trust is exposed to market risk from fluctuations in oil and gas prices. The trust is a passive entity and, other than the trust's ability to periodically borrow money as necessary to pay expenses, liabilities and obligations of the trust that cannot be paid out of cash held by the trust, the trust is prohibited from engaging in borrowing transactions. The amount of any such borrowings is unlikely to be material to the trust. In addition, the trustee is prohibited by the trust indenture from engaging in any business activity or causing the trust to enter into any investments other than investing cash on hand in specific short-term cash investments. Therefore, the trust cannot hold any derivative financial instruments. As a result of the limited nature of the trust's borrowing and investing activities, the trust is not subject to any material interest rate market risk. Additionally, any gains or losses from any hedging activities conducted by XTO Energy are specifically excluded from the calculation of net proceeds due the trust under the forms of the conveyances. The trust does not engage in transactions in foreign currencies which could expose the trust to any foreign currency related market risk.

Item 8.    Financial Statements and Supplementary Data

        The financial statements of the trust and the notes thereto, together with the related reports of KPMG LLP dated March 5, 2004 and Arthur Andersen LLP dated March 19, 2002,14, 2005, appearing in the trust's annual report to unitholders for the year ended December 31, 20032004, are incorporated herein by reference.

Item 9.    Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

        On June 25, 2002, the trustee appointed KPMG LLP as independent auditors for fiscal year 2002 to replace Arthur Andersen LLP, effective with such appointment. Information regarding this change in independent auditors is included in the trust's current report on Form 8-K dated June 25, 2002.

        There have been no other changes in accountants and there have been no disagreements with the trust's independent registered public accountants on any matter of accounting principles or practices or financial statement disclosures during the two years ended December 31, 2003.2004.

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Item 9A.    Controls and Procedures

Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures

        AsThe trustee conducted an evaluation of the trust's disclosure controls and procedures, as such term is defined under Rule 13a-15(e) promulgated under the Securities Exchange Act of 1934, as amended. Based on this evaluation, the trustee has concluded that the trust's disclosure controls and procedures were effective as of the end of the period covered by this report, the trustee carried out an evaluation of the effectiveness of the design and operation of the trust's disclosure controls and procedures pursuant to Exchange Act Rules 13a-15 and 15d-15. Based upon that evaluation, the trustee concluded that the trust's disclosure controls and procedures are effective in timely alerting the trustee to material information relating to the trust required to be included in the trust's periodic filings with the Securities and Exchange Commission.annual report. In its evaluation of disclosure controls and procedures, the trustee has relied, to the extent considered reasonable, on information provided by XTO Energy.

Trustee's Report on Internal Control Over Financial Reporting

        The trustee, Bank of America, N.A., is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Rule 13a-15(f) promulgated under the Securities Exchange Act of 1934, as amended. The trustee conducted an evaluation of the effectiveness of the trust's internal control over financial reporting based on the criteria established inInternal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on the trustee's evaluation under the framework inInternal Control—Integrated Framework, the trustee concluded that the trust's internal control over financial reporting was effective as of December 31, 2004. The trustee's assessment of the effectiveness of the trust's internal control over financial reporting as of December 31, 2004 has been audited by KPMG LLP, an independent registered public accounting firm, as stated in their report included in the trust's annual report to unitholders for the year ended December 31, 2004 which is incorporated herein by reference.

        There has not been any changewere no changes in the trust's internal control over financial reporting during the period covered by this reportquarter ended December 31, 2004 that hashave materially affected, or isare reasonably likely to materially affect, the trust's internal control over financial reporting.

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Item 9B.    Other Information

        None.

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PART III

Item 10.    Directors and Executive Officers of the Registrant

        The trust has no directors, executive officers or audit committee. The trustee is a corporate trustee which may be removed, with or without cause, by the affirmative vote of the holders of a majority of all the units then outstanding.

        Section 16(a) of the Securities Exchange Act of 1934 requires that beneficial owners of more than 10% of the registrant's equity securities file initial reports of beneficial ownership and reports of changes in beneficial ownership with the Securities and Exchange Commission and the New York Stock Exchange. The Securities and Exchange Commission has taken the position that executive officers and directors of XTO Energy must also file initial ownership reports and reports of changes in beneficial ownership. Copies of the reports must be provided to the trust. To the trustee's knowledge, based solely on the information furnished to the trust, the trust is unaware of any person that failed to file on a timely basis reports required by Section 16(a) filing requirements with respect to the trust units of beneficial interest during and for the year ended December 31, 2003.2004.

        Because the trust has no employees, it does not have a code of ethics. Employees of the trustee, Bank of America, N.A., must comply with the bank's code of ethics, a copy of which will be provided to unitholders, without charge, upon request by appointment at Bank of America Plaza, 17^th Floor, 901 Main Street, Dallas, Texas 75202.

Item 11.    Executive Compensation

        The trustee received the following annual compensation from 20012002 through 20032004 as specified in the trust indenture:

(1)

Under the trust indenture, the trustee is entitled to an annual administrative fee, paid in equal monthly installments. Such fee can be adjusted annually based on an oil and gas industry index. Upon termination of the trust, the trustee is entitled to a termination fee of $15,000.

Item 12.    Security Ownership of Certain Beneficial Owners and Management

        The trust has no equity compensation plans.

        (a)  Security Ownership of Certain Beneficial Owners. The following table sets forth as of March 1, 2004February 28, 2005 information with respect to each person known to the trustee to beneficially own more than 5% of the outstanding units of the trust:

(1)

XTO Energy has the sole power to vote and dispose of these units.

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        (b)  Security Ownership of Management. The trust has no directors or executive officers. As of March 1, 2004,3, 2005, Bank of America, N.A. owned, in various fiduciary capacities, 48,36845,005 units, with a shared right to vote 18,26815,005 of these units and no right to vote 30,10030,000 of these units. Bank of America, N.A. disclaims any

16

beneficial interests in these units. The number of units reflected in this paragraph includes units held by all branches of Bank of America, N.A.

        (c)  Changes in Control. The trustee knows of no arrangements which may subsequently result in a change in control of the trust.

Item 13.    Certain Relationships and Related Transactions

        In computing net profits income paid to the trust for the net profits interests, XTO Energy deducts an overhead charge for reimbursement of administrative expenses of operating the underlying properties. This charge at December 31, 20032004 was approximately $606,000$637,000 per month, or $7,272,000$7,644,000 annually (net to the trust of $484,800$509,600 per month or $5,817,600$6,115,200 annually), and is subject to annual adjustment based on an oil and gas industry index as defined in the trust agreement.

        XTO Energy sells a significant portion of natural gas production from the underlying properties to certain of its wholly owned subsidiaries under contracts in existence when the trust was created, generally at amounts approximating monthly published prices. For further information, see "Hugoton Area," "Anadarko Basin," "Green River Basin" and "Pricing and Sales Information," of Item 2.

        See Item 11 for the remuneration received by the trustee from 20012002 through 20032004 and Item 12(b) for information concerning units owned by the trustee, Bank of America, N.A., in various fiduciary capacities.

Item 14.    Principal Accounting Fees and Services

        Fees for services performed by KPMG LLP for the years ended December 31, 20032004 and 2002 are:2003:

(1)

Includes fees of $39,206 related to audit of the trust's internal control over financial reporting.

        As referenced in Item 10, above, the trust has no audit committee, and as a result, has no audit committee pre-approval policy with respect to fees paid to KPMG LLP.

PART IV

Item 15.    Exhibits and Financial Statement Schedules and Reports on Form 8-K

(a)

The following documents are filed as a part of this report:

1.

Financial Statements (incorporated by reference in Item 8 of this report)

Independent Auditors'Registered Public Accounting Firm Reports
Statements of Assets, Liabilities and Trust Corpus at December 31, 20032004 and 20022003
Statements of Distributable Income for the years ended December 31, 2004, 2003 2002 and 20012002
Statements of Changes in Trust Corpus for the years ended December 31, 2004, 2003 2002 and 20012002
Notes to Financial Statements

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2.

Financial Statement Schedules

            Financial statement schedules are omitted because of the absence of conditions under which they are required or because the required information is given in the financial statements or notes thereto.

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3.

Exhibits

        Copies of the above Exhibits are available to any unitholder, at the actual cost of reproduction, upon written request to the trustee, Bank of America, N.A., P.O. Box 830650, Dallas, Texas 75283-0650.

(b)

Reports on Form 8-K

        During the last quarter of the trust's fiscal year ended December 31, 2003, there were no reports filed on Form 8-K by the trust with the Securities and Exchange Commission. The trust furnished three reports on Form 8-K under Item 12 for this period.

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SIGNATURES

        Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the undersigned thereunto duly authorized.

        (The trust has no directors or executive officers.)

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QuickLinks

Item 1. Business
Item 2. Properties
Item 3. Legal Proceedings
Item 4. Submission of Matters to a Vote of Security Holders

Item 5. Market for Units of the Trust, Related Security Holder Matters and Trust Purchases of Units
Item 6. Selected Financial Data
Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations
Item 7a.7A. Quantitative and Qualitative Disclosures about Market Risk
Item 8. Financial Statements and Supplementary Data
Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
Item 9A. Controls and Procedures
Item 9B. Other Information

Item 10. Directors and Executive Officers of the Registrant
Item 11. Executive Compensation
Item 12. Security Ownership of Certain Beneficial Owners and Management
Item 13. Certain Relationships and Related Transactions
Item 14. Principal Accounting Fees and Services

Item 15. Exhibits and Financial Statement Schedules and Reports on Form 8-K