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ECTM 10-K & 10-Q changes, risk factors and insider trading

ECA Marcellus Trust I · OTC · Crude Petroleum & Natural Gas · CIK 1487798 · All filings on SEC.gov

Everything below is quoted or computed from ECA Marcellus Trust I's public SEC filings. It is not a recommendation to buy or sell. Automated comparisons can contain errors; confirm with the original filing.

At a glance

3 / 71risk-factor paragraphs added / removed in latest 10-K
0new risk-factor headings
0Form 4 filings reporting open-market purchases (last 180 days)
0Form 4 filings reporting open-market sales (last 180 days)

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What changed in the latest 10-K

Comparing 10-K filed 2026-03-24 (period ending 2025-12-31) with 10-K filed 2025-03-19 (period ending 2024-12-31).

Risk Factors (10-K Item 1A)

3new paragraphs
71removed paragraphs
17reworded paragraphs
14,788 → 12,600words in section

Largest changes (selected automatically by length and topic keywords; quoted verbatim, no commentary)

Reworded topics: litigation, breach, ukraine

Paragraph as it now reads, with added and removed wording marked:

Greylock Energy increasingly relies on information technology (“IT”) systems and networks in connection with its business activities, including certain of its exploration, development and production activities. Greylock Energy relies on digital technology, including information systems and related infrastructure, as well as cloud applications and services, to, among other things, estimate quantities of oil and natural gas reserves, analyze seismic and drilling information, process and record financial and operating data and communicate with employees and third parties. As dependence on digital technologies has increased, cyber incidents, including deliberate attacks and attempts to gain unauthorized access to computer systems and networks, have increased in frequency and sophistication. These threats pose a risk to the security of Greylock Energy’s systems and networks, the confidentiality, availability and integrity of its data and the physical security of its employees and assets. GreylockThis Energyrisk hasis experienced,exacerbated andwith expectsthe toadvancement continueof totechnologies experience,like attemptsartificial fromintelligence, hackers and otherwhich malicious third parties toare gain unauthorized accessusing to itscreate ITnew, systemssophisticated and networks.more Althoughfrequent priorattacks. cyber-attacksFurthermore, havegeopolitical not had a material adverse effect on Greylock Energy’s operationstensions or financialconflicts, such performance,as Greylockthe Energyongoing might not be successfulwars in preventing cyber-attacks or mitigating their effect. Any cyber-attack could have a material adverse effect on Greylock Energy’s reputation, competitive position, business, financial conditionUkraine and resultsin the Persian Gulf, may further heighten the risk of operations,cybersecurity and could have a material adverse effect on the Trust. Cyber-attacks or security breaches also could result in litigation or regulatory action, as well as significant additional expense to Greylock Production to implement further data protection measures.attacks.
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New text topics: litigation, breach
“Greylock Energy has experienced, and expects to continue to experience, attempts from hackers and other third parties to gain unauthorized access to its IT systems and networks. Although prior cyber-attacks have not had a material adverse effect on Greylock Energy’s operations or financial performance, Greylock Energy might not be successful in preventing cyber-attacks or mitigating their effect. …”
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Reworded topics: litigation, climate

Paragraph as it now reads, with added and removed wording marked:

In addition, new and emergingfuture regulatory initiatives in the U.S. related to climate change disclosure or reporting could adversely affect the Trust. In 2024, the SEC issued a final rule regarding the enhancement and standardization of mandatory climate-related disclosures for investors. The final rule mandates extensive disclosure of climate-related data, risks, and opportunities, including financial impacts, physical and transition risks, related governance and strategy and greenhouse gas emissions, for certain public companies. The SEC’s climate disclosure rule was challenged in court, and in March 2025 the SEC announced that it had voted to end its defense of the 2024 rule. The outcome of that litigation or separate rule changes made by the SEC may result in changes to climate-related disclosure requirements. Even in the absence of federal requirements, however, some states have adopted climate disclosure laws or rules that are not affected by the SEC’s review. Compliance with the finalfederal ruleor state disclosure rules may result in increased legal, accounting and financial compliance costs, make some activities more difficult, time-consuming and costly, and place strain on the personnel, systems and resources of Greylock Production or the Trust or both. The SEC’s climate disclosure requirements may change under the Trump Administration. In February 2025, the acting SEC Chair issued a statement that the SEC would not defend the 2024 disclosure rule in court and that the SEC would revisit the 2024 rule. The outcome of the SEC’s review may result in changes to SEC climate-related disclosure requirements, but the outcome of that review is uncertain. Even in the absence of federal requirements, however, some states have adopted climate disclosure laws or rules that are not affected by the SEC’s review.
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Removed text topics: russia, ukraine, israel
“the armed conflicts between Russia and Ukraine and between Israel and Iran and its proxies and the potential destabilizing effects such conflicts may pose for the global natural gas markets;”
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Reworded topics: regulation, climate

Paragraph as it now reads, with added and removed wording marked:

InThe responseTrump Administration’s efforts to itsroll back 2009federal findingregulation of greenhouse gases (“GHGs”) represent a significant shift in federal climate policy, though the ultimate impact of those efforts on Greylock Production is unclear. In 2009, the EPA found that emissions of carbon dioxide, methane and other greenhouse gases (“ GHGs”) may present an endangerment to public health and the environment,environment theand EPA hassubsequently issued regulations to restrict emissions of greenhouse gases under existing provisions of the CAA. These regulations include limits on tailpipe emissions from motor vehicles, preconstruction and operating permit requirements for certain large stationary sources, and methane emissions standards for certain new, modified and reconstructed oil and gas sources —– as well as the EPA’s methane emissions guidelines for existing oil and gas sources that were adopted in 2024. The EPA also has adopted rules requiring the reporting of GHG emissions from specified large greenhouse gas emission sources in the United States, as well as certain onshore oil and natural gas production facilities, on an annual basis. Shortly after President Trump took office in January 2025, the federal government embarked on a series of changes relating to climate policy and regulation. On January 20, 2025, President Trump announced the withdrawal of the United States from the Paris Climate Agreement. In PresidentJuly Trump2025, alsothe EPA issued ana executiveproposed orderrule directingto rescind the 2009 GHG endangerment finding that provided a basis for GHG regulation under the CAA. In September 2025, the EPA proposed to rescind the GHG reporting program for sectors other than the oil and gas sector, while proposing to suspend GHG reporting requirements for the oil and gas sector until 2034. In February 2026, the EPA adopted a final rule repealing its prior endangerment finding, which opens the door for the EPA to review the legality and continuing applicability ofrepeal its 2009 GHG endangerment finding. The outcome of that review is not currently known; however, it has the potential to eliminate the basisrules for the EPA’soil regulationand gas of GHGs under the CAA.sector.
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Removed text topics: tariff
“Any third-party post-production costs incurred and associated with the Trust’s interests reduces cash received by the Trust or available for distribution by the Trust to the Trust unitholders, including any amounts paid by Greylock Production for transportation on downstream interstate pipelines. …”
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Full comparison: every changed paragraph (91)

Green = added, red = removed. Unchanged paragraphs, 3 paragraphs where only numbers/dates changed, and tables are not shown. Read the complete text in the original filing.

Removed

Natural gas prices fluctuate due to a number of factors that are beyond the control of the Trust and Greylock Production, and lower prices would reduce proceeds to the Trust and cash distributions to Trust unitholders.

Removed

Actual reserves and future production may be less than current estimates, which could reduce cash distributions by the Trust and the value of the Trust units.

Removed

Any limitation in the availability of gathering, transportation and processing facilities could interfere with sales of natural gas production from the Underlying Properties.

Removed

Adverse developments in the Trust’s existing area of operation could adversely impact its financial condition, results of operations and cash flows and reduce its ability to make distributions to Trust unitholders.

Removed

Natural gas wells are subject to operational hazards that can cause substantial losses.

Removed

Declines in the financial position of Greylock Production could impede the operation of wells.

Removed

The Trust units may lose value as a result of title deficiencies with respect to the Underlying Properties.

Removed

The natural gas reserves estimated to be attributable to the Underlying Properties of the Trust are depleting assets and production from those reserves will diminish over time.

Removed

The amount of cash available for distribution by the Trust will be reduced by the amount of post-production costs, applicable taxes associated with the Trust’s interest, and Trust expenses.

Removed

The Trust has established a cash reserve for contingent liabilities and to pay expenses in accordance with the Trust Agreement, which would reduce proceeds payable to the Trust and distributions to Trust unitholders.

Removed

An increase in the negative basis differential between the price realized by Greylock Production for natural gas produced from the Underlying Properties and the NYMEX or other benchmark price of natural gas could reduce the proceeds to the Trust and therefore the cash distributions by the Trust and the value of the Trust units.

Removed

The Trust has no hedges in place to protect against the price risk inherent in holding interest in natural gas.

Removed

The ability of Greylock Production to satisfy its obligations to the Trust depends on the financial position of Greylock Production.

Removed

The Trust is passive in nature and has no stockholder voting rights in Greylock Production, managerial, contractual or other ability to influence Greylock Production, or control over the field operations of, sale of natural gas from, or development of, the Underlying Properties.

Removed

Greylock Production may sell all or a portion of the Underlying Properties, subject to and burdened by the Royalty Interests. A purchaser of such Underlying Properties could have a weaker financial position and/or be less experienced in natural gas development and production than Greylock Production.

Removed

The Trustee may, under certain circumstances, sell the Royalty Interests and dissolve the Trust. Unless sooner terminated, the Trust will begin to terminate following the end of the 20-year period in which the Trust owns the Term Royalty Interests.

Removed

Conflicts of interest could arise between Greylock Production and the Trust unitholders.

Removed

The Trust is administered by a Trustee who cannot be replaced except at a special meeting of Trust unitholders.

Removed

Financial information of the Trust is not prepared in accordance with GAAP.

Removed

The Trust is a smaller reporting company and benefits from certain reduced governance and disclosure requirements, which could make the Trust Units less attractive to investors.

Removed

Because the Trust units are traded on the OTC market, Trust unitholders may have more difficulty selling Trust units or obtaining accurate quotations of the Trust units.

Removed

The Private Investors may sell additional Trust units, which could adversely affect the trading price of the Trust units.

Removed

Trust unitholders have limited ability to enforce provisions of the Royalty Interests, and Greylock Production’s liability to the Trust is limited.

Removed

Courts outside of Delaware may not recognize the limited liability of Trust unitholders.

Removed

Greylock Production is subject to complex federal, state, local and other laws and regulations, including environmental laws and regulations, that could adversely affect the cost, manner or feasibility of conducting its operations or expose Greylock Production to significant liabilities.

Removed

Climate change laws and regulations restricting emissions of “greenhouse gases” could result in increased operating costs and reduced demand for the natural gas that Greylock Production produces while the physical effects of climate change could disrupt Greylock Production’s production and cause Greylock Production to incur significant costs in preparing for or responding to those effects.

Removed

Cyber-attacks or other failures in telecommunications or information technology systems could result in information theft, data corruption and significant disruption of Greylock Energy’s or the Trustee’s business operations.

Removed

The Trust’s tax treatment depends on its status as a partnership for United States federal income tax purposes. At the inception of the Trust, the Trust received an opinion from tax counsel that the Trust will be treated as a partnership for United States federal income tax purposes. If the IRS were to treat the Trust as a corporation for United States federal income tax purposes, then its cash available for distribution would be substantially reduced.

Removed

If the Trust were subjected to a material amount of additional entity-level taxation by Pennsylvania or any other states, the Trust’s cash available for distribution to Trust unitholders would be reduced.

Removed

If enacted, severance taxes in Pennsylvania could materially increase the applicable taxes that are borne by the Trust.

Removed

The tax treatment of publicly traded partnerships or an investment in the Trust units could be affected by recent and potential legislative, judicial or administrative changes and differing interpretations, possibly on a retroactive basis.

Removed

The Trust prorates items of income, gain, loss and deduction between transferors and transferees of the Trust units each month based upon the ownership of the Trust units on the first day of each month, instead of on the basis of the date a particular Trust unit is transferred.

Removed

If the IRS contests the United States federal income tax positions the Trust takes, the market for the Trust units may be adversely impacted and the cost of any IRS contest will reduce the Trust’s cash available for distribution.

Removed

Each Trust unitholder is required to pay taxes on the Trust unitholder’s share of the Trust’s income even if a Trust unitholder does not receive any cash distributions from the Trust.

Removed

Tax gain or loss on the disposition of the Trust units could be more or less than expected.

Removed

Tax-exempt organizations and non-United States persons face unique tax issues from owning the Trust units that may result in adverse tax consequences to them.

Removed

The IRS may challenge the Trust’s treatment of each purchaser of Trust units as having the same economic attributes without regard to the actual Trust units purchased.

Removed

A Trust unitholder whose Trust units are loaned to a “short seller” to cover a short sale of Trust units may be considered as having disposed of those Trust units. If so, he would no longer be treated for tax purposes as a partner with respect to those Trust units during the period of the loan and may recognize gain or loss from the disposition.

Removed

The IRS may challenge the Trust’s adoption of certain valuation methodologies that may affect the income, gain, loss and deduction allocable to the Trust unitholders.

Removed

Certain United States federal income tax preferences currently available with respect to natural gas production may be eliminated as a result of future legislation.

Removed

weather conditions and seasonal trends;

Removed

regional, domestic and foreign supply and perceptions of supply of natural gas;

Removed

availability of imported liquefied natural gas, or LNG;

Removed

the level of demand and perceptions of demand for natural gas;

Removed

anticipated future prices of natural gas, LNG and other commodities;

Removed

technological advances affecting energy consumption and energy supply;

Removed

U.S. and worldwide political and economic conditions;

Removed

trade barriers and tariffs;

Removed

the armed conflicts between Russia and Ukraine and between Israel and Iran and its proxies and the potential destabilizing effects such conflicts may pose for the global natural gas markets;

Removed

the occurrence or threat of epidemic or pandemic diseases or other public health event, or any government response to such occurrence or threat;

Removed

the price and availability of alternative fuels;

Removed

the proximity, capacity, cost and availability of gathering and transportation facilities;

Removed

the volatility and uncertainty of regional pricing differentials;

Removed

acts of force majeure;

Removed

governmental regulations and taxation; and energy conservation and environmental measures.

Reworded

The value of the Trust units and the amount of future cash distributions to the Trust unitholders will depend upon, among other things, the accuracy of the reserves estimated to be attributable to the Trust’s Royalty Interests. The Trust’s reserve quantities and royalty income are based on estimates of reserve quantities and royalty income for the Underlying Properties. See “The underlying properties — Natural gas reserves” in the Prospectus for a discussion of the method of allocating Proved reserves to the Trust. It is not possible to measure underground accumulations of natural gas in an exact way, and estimating reserves is inherently uncertain. Ultimately, actual production and royalty income from the Underlying Properties could vary negatively and in material amounts from estimates and those variations could be material. Petroleum engineers are required to make subjective estimates of underground accumulations of natural gas based on factors and assumptions that include:

Removed

historical production from the area compared with production rates from other producing areas;

Removed

natural gas prices, production levels, Btu content, production expenses, transportation costs, severance and excise taxes and capital expenditures;

Removed

the availability of enhanced recovery techniques;

Removed

relationships with landowners, operators, pipeline companies and others; and the assumed effect of governmental regulation.

Showing the first 60 of 91 changed paragraphs. The complete comparison will be part of Pro (coming soon). Meanwhile you can read the full text in the original filing.

Management's Discussion & Analysis (MD&A) (10-K Item 7)

Not available: the section could not be located automatically in both filings (non-standard layout or incorporated by reference). See the original filing. Open the filing on SEC.gov.

What changed in the latest 10-Q

Comparing 10-Q filed 2026-08-13 (period ending 2026-06-30) with 10-Q filed 2026-05-13 (period ending 2026-03-31).

Risk Factors (10-Q Part II, Item 1A)

0new paragraphs
0removed paragraphs
0reworded paragraphs
32 → 32words in section

The section in the latest 10-Q reads in full:

Risk factors relating to the Trust are contained in Item 1A of the 2025 Form 10-K. No material changes to such risk factors have occurred since the filing of such report.

No wording changes found in this section.

Full comparison: every changed paragraph (0)

Green = added, red = removed. Unchanged paragraphs and tables are not shown. Read the complete text in the original filing.

Management's Discussion & Analysis (MD&A) (10-Q Part I, Item 2)

Not available: the section could not be located automatically in both filings (non-standard layout or incorporated by reference). See the original filing. Open the filing on SEC.gov.

ECTM insider buying and selling (Form 4)

Since 2026-04-11, insiders reported open-market purchases in 0 Form 4 filings and open-market sales in 0 filings. Totals add up every open-market (code P and S) line in those filings, using the prices reported in the filings. Awards, option exercises, tax withholding and gifts are listed below but not counted.

No Form 4 stock transactions in this period.

Well-known investors holding ECTM (13F)

None of the 59 investors we track reported a position in their latest 13F.

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