Under the Securities Exchange Act of 1934
(Amendment No. 4)

(Name of Issuer)

(Title of Class of Securities)

(CUSIP Number)

(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)

Copies to:

David P. Oelman

Vinson & Elkins LLP

1001 Fannin Street, Suite 2500

Houston, TX 77002

(713)758-2222

(Date of Event Which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box:  o

(Continued on following pages)

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Item 1.   Security and Issuer

This Amendment No. 4 (this “Amendment”) amends and supplements that certain Schedule 13D initially filed on July 22, 2010, as amended by Amendment No. 1 filed on April 27, 2011, Amendment No. 2 filed on March 21, 2013 and Amendment No. 3 filed on May 7, 2014 (the “Schedule 13D”). This Amendment relates to the common units (the “ECT Common Units”), of ECA Marcellus Trust I a Delaware statutory trust (the “Issuer”), which has its principal executive offices at 919 Congress Avenue, Suite 500, Austin, Texas, 78701.

Item 2.   Identity and Background

(a), (b), and (c)  Name of Person Filing this Amendment:

This Amendment is being filed by Energy Corporation of America (“ECA”), which no longer beneficially owns any of the outstanding ECT Common Units of the Issuer.

The name, place of organization, principal business, address of the principal place of business and certain information concerning the officers and directors of ECA is as follows:

ENERGY CORPORATION OF AMERICA

ECA is a privately held energy company engaged in the exploration, development, production, gathering, aggregation and sale of natural gas and oil, primarily in the Appalachian Basin, Gulf Coast and Rocky Mountain regions in the United States and in New Zealand. ECA or its predecessors have owned and operated natural gas properties in the Appalachian Basin for more than 50 years, and ECA is one of the largest natural gas operators in the Appalachian Basin. ECA sells gas from its own wells as well as third-party wells to local gas distribution companies, industrial end users located in the Northeast and other gas marketing entities and into the spot market for gas delivered into interstate pipelines. ECA owns or operates, either directly or through its subsidiaries or affiliates, approximately 5,000 miles of gathering lines and intrastate pipelines that are used in connection with its gas aggregation activities.

The principal business address of ECA, which also serves as its principal office, is 4643 South Ulster Street, Suite 1100, Denver, Colorado 80237.  ECA is controlled and managed by a board of directors.  The directors and executive officers of ECA are as follows:

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(d)          None of the persons identified in this Item 2 has, during the last five years, been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).

(e)           None of the entities or persons identified in this Item 2 has, during the last five years, been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violations with respect to such laws.

(f)            All of such directors and officers are citizens of the United States of America.

Item 3.   Source and Amount of Funds or Other Consideration

From March 21, 2013 through May 16, 2014, ECA disposed of 3,279,652 ECT Common Units in the ordinary course of business, including:

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Item 4.   Purpose of Transaction

ECA acquired the ECT Common Units in 2010 for investment purposes.  ECA currently has no plans to undertake any action that would require further disclosure under this Item 4.

Item 5.   Interest in Securities of the Issuer.

(a)                                 As of May 20, 2014, ECA does not own any ECT Common Units.

(b)                                 Not applicable.

(c)                                  Except as described in this Amendment, there have been no transactions in the ECT Common Units effected by ECA, or, to the knowledge of ECA, any person identified in Item 2, during the past 60 days.

(d)                                 Except as described in this Amendment, no other person is known by ECA to have the right to receive or the power to direct the receipt of distributions from, or the proceeds from the sale of, ECT Common Units beneficially owned by ECA.

(e)           Not applicable.

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Item 6.   Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer.

There are no contracts, arrangements, understandings or relationship with respect to the ECT Common Units that require disclosure on this Amendment.

Item 7.   Material to be Filed as Exhibits

None.

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Signature

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

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