FirstEnergy (FE) DEFA14A Additional proxy soliciting materials

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

Filed by the Registrant  ☒

Filed by a Party other than the Registrant  ☐

Check the appropriate box:

☐	Preliminary Proxy Statement
☐	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
☐	Definitive Proxy Statement
☒	Definitive Additional Materials
☐	Soliciting Material Pursuant to §240.14a-12
FirstEnergy Corp.
(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
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[The following letter will be mailed by FirstEnergy Corp. to certain registered holders of its common stock.]

76 South Main Street Akron, Ohio 44308

Ketan K. Patel

Vice President, Corporate Secretary & Chief Ethics Officer

May 5, 2017

*** IMPORTANT ***

TIME IS SHORT – PLEASE VOTE YOUR SHARES TODAY

Dear Shareholder:

Time is running short to exercise your shareholder rights. FirstEnergy Corp.’s Annual Meeting of Shareholders is rapidly approaching. Your vote is very important!

You previously received proxy materials or a notice of internet availability of proxy materials relating to FirstEnergy Corp.’s Annual Meeting of Shareholders to be held on May 16, 2017. You are receiving this reminder notice becausewe have not yet received your vote for this meeting at the time of this mailing.

Your Board of Directors recommends voting “FOR” the election of all nominees in Item 1 and the proposals in Items 2, 3 and 5 through 8 and “Every Year” for the proposal in Item 4. There are also three shareholder proposals on the agenda andyour Board of Directors recommends that you vote “AGAINST” the three shareholder proposals in Items 9 through 11.A full explanation of our position on each of these items is available in the proxy statement for the Annual Meeting of Shareholders which can be found atwww.firstenergycorp.com/financialreports.

Voting is easy:

	•    Go to the websitewww.cesvote.com. •    You will need to have your control number which is listed on the enclosed materials and follow the instructions.
Vote by Internet
	•    Call1-888-693-8683 (toll-free). •    You will need to have your control number which is listed on the enclosed materials and follow the instructions.
Vote by Phone
	•    Vote, sign, date and mail the enclosed proxy card/voting instruction form in the postage-paid envelope without delay to ensure your vote is counted. •    If you have voted by internet or telephone, please do not return the proxy card/voting instruction form.
Vote by Mail

Please take time to vote TODAY.If you have any questions, or need assistance in voting your shares, please call our proxy solicitor, Morrow Sodali LLCat1-800-461-0945(toll-free).

Thank you for your continued support of FirstEnergy Corp.

[The following letter will be mailed by FirstEnergy Corp. to certain beneficial holders of its common stock.]

76 South Main Street Akron, Ohio 44308

Ketan K. Patel

Vice President, Corporate Secretary & Chief Ethics Officer

May 5, 2017

*** IMPORTANT ***

TIME IS SHORT – PLEASE VOTE YOUR SHARES TODAY

Dear Shareholder:

Time is running short to exercise your shareholder rights. FirstEnergy Corp.’s Annual Meeting of Shareholders is rapidly approaching. Your vote is very important!

You previously received proxy materials relating to FirstEnergy Corp.’s Annual Meeting of Shareholders to be held on May 16, 2017. You are receiving this reminder notice becausewe have not yet received your vote for this meeting at the time of this mailing.

Your Board of Directors recommends voting “FOR” the election of all nominees in Item 1 and the proposals in Items 2, 3 and 5 through 8 and “Every Year” for the proposal in Item 4. There are also three shareholder proposals on the agenda andyour Board of Directors recommends that you vote “AGAINST” the three shareholder proposals in Items 9 through 11.A full explanation of our position on each of these items is available in the proxy statement for the Annual Meeting of Shareholders which can be found atwww.firstenergycorp.com/financialreports.

Voting is easy:

	•    Go to the websitewww.proxyvote.com. •    You will need to have your control number which is listed on the enclosed materials and follow the instructions.
Vote by Internet
	•    Call1-800-454-8683 (toll-free). •    You will need to have your control number which is listed on the enclosed materials and follow the instructions.
Vote by Phone
	•    Vote, sign, date and mail the enclosed voting instruction form in the postage-paid envelope without delay to ensure your vote is counted. •    If you have voted by internet or telephone, please do not return the voting instruction form.
Vote by Mail

Please take time to vote TODAY.If you have any questions, or need assistance in voting your shares, please call our proxy solicitor, Morrow Sodali LLCat1-800-461-0945(toll-free).

Thank you for your continued support of FirstEnergy Corp.