UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (date of earliest event reported): October 23, 2014

WASHINGTON PRIME GROUP INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (240) 630-0000

N/A

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrants under any of the following provisions (see General Instruction A.2. below):

x               Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o                 Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o                 Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o                 Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 5.02                   Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

The disclosure in Item 8.01 is incorporated by reference herein.

Item 8.01 Other Events.

On October 23, 2014, in connection with the transactions contemplated by the Agreement and Plan of Merger dated as of September 16, 2014 by and among Washington Prime Group Inc. (the “Company”), Washington Prime Group, L.P., WPG Subsidiary Holdings I, LLC, WPG Subsidiary Holdings II Inc., Glimcher Realty Trust, and Glimcher Properties Limited Partnership, the Company provided Myles H. Minton with notice of the Company’s decision to terminate Mr. Minton’s employment as the Company’s Chief Operating Officer without “cause” (as defined in the employment agreement by and among the Company and Mr. Minton, dated as of June 3, 2014 (the “Employment Agreement”)).  Entry into the Employment Agreement was previously disclosed on a Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission on June 5, 2014.  Mr. Minton’s termination will be effective as of a date to be determined between Mr. Minton and the Company.

Additional Information and Where to Find It

In connection with the proposed transaction, WPG will file with the Securities and Exchange Commission (the “SEC”) a registration statement on Form S-4 that will include a proxy statement of Glimcher and a prospectus of WPG, and Glimcher will file other documents with respect to WPG’s proposed acquisition of Glimcher.  Glimcher plans to mail the definitive proxy statement/prospectus and a form of proxy to its shareholders in connection with the proposed transaction. This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. BEFORE MAKING ANY VOTING OR INVESTMENT DECISION WITH RESPECT TO THE PROPOSED MERGER, INVESTORS AND SHAREHOLDERS ARE URGED TO READ THE PROXY STATEMENT/PROSPECTUS (INCLUDING ALL AMENDMENTS AND SUPPLEMENTS THERETO) AND OTHER RELEVANT DOCUMENTS FILED OR TO BE FILED WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT WPG, GLIMCHER, THE PROPOSED TRANSACTIONS AND RELATED MATTERS.

A free copy of the Proxy Statement/Prospectus, as well as other filings containing information about WPG and Glimcher, may be obtained at the SEC’s Internet site (http://www.sec.gov). You will also be able to obtain these documents, free of charge, from WPG by accessing WPG’s website at investors.washingtonprime.com under the heading “Financial Information” and then under “SEC Filings” or from Glimcher by accessing Glimcher’s website at investor.glimcher.com under the heading “Financial Information” and then under “SEC Filings.”  Copies of the Proxy Statement/Prospectus can also be obtained, free of charge, by directing a request to Washington Prime Group Inc., 7315 Wisconsin Avenue, Bethesda, Maryland 20814, Attention: Investor Relations, Telephone: 240-630-0021 or to Glimcher Realty Trust, 180 East Broad Street, Columbus, Ohio  43215, Attention: Investor Relations, Telephone: 614-887-5632.

Participants in Solicitation Relating to the Merger

WPG, Glimcher and their respective directors or trustees and executive officers and other persons may be deemed to be participants in the solicitation of proxies from Glimcher’s shareholders in respect of the proposed transaction.  Information regarding the persons who may, under the rules of the SEC, be deemed participants in the solicitation of proxies from Glimcher’s shareholders in connection with the proposed transaction, including a description of their direct or indirect interests, by security holdings or otherwise, in Glimcher is set forth in WPG’s Registration Statement on Form 10-12(b), Glimcher’s Annual Report on Form 10-K for the year ended December 31, 2013, and Glimcher’s Proxy Statement on Schedule 14A, dated March 28, 2014, which are filed with the SEC.  Additional information regarding the interests of WPG’s or Glimcher’s directors or trustees and executive officers in the proposed transactions, which may be different than those of Glimcher’s shareholders generally, will be contained in the proxy statement/prospectus and other relevant documents when filed with the SEC in connection with the proposed transactions.

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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