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<div><a name="s2a9207c56c964e3891c84ddbf9c97ede"></a></div><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><div><br></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">UNITED STATES</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">SECURITIES AND EXCHANGE COMMISSION</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">WASHINGTON, D.C. 20549</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">__________________________</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div><div style="line-height:120%;text-align:center;font-size:18pt;"><font style="font-family:inherit;font-size:18pt;font-weight:bold;">FORM 8-K</font></div><div style="line-height:120%;text-align:center;font-size:14pt;"><font style="font-family:inherit;font-size:14pt;">&#160;</font><font style="font-family:inherit;font-size:14pt;font-weight:bold;">&#160;</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">CURRENT REPORT</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">PURSUANT TO SECTION 13 OR 15(d) OF THE</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">SECURITIES EXCHANGE ACT OF 1934</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Date of report (Date of earliest event reported) November 2, 2016 (November 1, 2016)</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">&#160;</font></div><div style="line-height:120%;text-align:center;font-size:18pt;"><font style="font-family:inherit;font-size:18pt;font-weight:bold;">AMERICAN DG ENERGY INC.</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(Exact Name of Registrant as Specified in Its Charter)</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Delaware</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(State or Other Jurisdiction of Incorporation)</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div><div style="line-height:120%;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td style="width:39%;"></td><td style="width:22%;"></td><td style="width:39%;"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">001-34493</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">04-3569304</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(Commission File Number)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(IRS Employer Identification No.)</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">45 First Avenue</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Waltham, Massachusetts</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">02451</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(Address of Principal Executive Offices)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(Zip Code)</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(781) 522-6020</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(Registrant&#8217;s Telephone Number, Including Area Code)</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;&#160;</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">_______________________________________________</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">&#160;</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">&#160;</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:Wingdings;font-size:10pt;">&#254;</font><font style="font-family:inherit;font-size:10pt;">&#32;Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:Wingdings;font-size:10pt;">&#168;</font><font style="font-family:inherit;font-size:10pt;">&#32;Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:Wingdings;font-size:10pt;">&#168;</font><font style="font-family:inherit;font-size:10pt;">&#32;Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:Wingdings;font-size:10pt;">&#168;</font><font style="font-family:inherit;font-size:10pt;">&#32;Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">&#160;</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div><br></div><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><hr style="page-break-after:always"><div><a name="s67dbb696d4db447ea8aaf17d65f17c0b"></a></div><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><div><br></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Item 1.01.&#160;&#160;&#160;&#160;Entry into a Material Definitive Agreement</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">Merger Agreement</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">On November 1, 2016, American DG Energy, Inc. (NYSE MKT: ADGE), a Delaware corporation ("American DG"), entered into an Agreement and Plan of Merger dated, as of November 1, 2016 (the "Merger Agreement") among American DG, Tecogen, Inc. (Nasdaq: TGEN), a Delaware corporation ("Tecogen"), and Tecogen.ADGE Acquisition Corp., a Delaware corporation and a wholly-owned subsidiary of Tecogen ("Merger Subsidiary").</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Under the terms of the Merger Agreement, Merger Subsidiary will merge with and into American DG, with American DG becoming a wholly-owned subsidiary of Tecogen and the surviving corporation of the transaction (the "Merger"). The Merger is intended to qualify for federal income tax purposes as a tax-free reorganization under the provisions of Section 368(a) of the Internal Revenue Code of 1986. Subject to the terms and conditions of the Merger Agreement and shareholder approval, at the closing of the Merger, each outstanding share of American DG common stock will be converted into the right to receive approximately 0.092 shares of common stock of Tecogen ("the Exchange Ratio"). Consummation of the Merger is subject to customary closing conditions, including, among other things, approval by the stockholders of Tecogen and American DG. The Merger Agreement does not contain any termination, prohibitions on termination, no-shop clause, or reimbursements of Merger related expenses. As part of the Merger Agreement, American DG and Tecogen have made customary mutual representations and warranties.  </font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Also in connection with the Merger, Tecogen will, at the effective time of the Merger, assume the (a) outstanding</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">stock options of American DG and (b) outstanding warrants of American DG, each as adjusted pursuant to the Exchange Ratio</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">and subject to the terms of the Merger Agreement. All outstanding stock options and restricted stock units of American DG</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">will be cancelled and extinguished at the effective time of the Merger without any right to receive any consideration in American DG.</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The officers, directors, and large shareholders of Tecogen and American DG have not entered into any voting or support agreements in connection with the Merger.</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preceding summary does not purport to be complete and is qualified in its entirety by reference to the Merger Agreement, which is filed as Exhibit 2.1 to this Current Report on Form 8-K and which is incorporated herein by reference.</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">Additional Information about the Merger and Where to Find It</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In connection with the Merger, American DG and Tecogen intend to file relevant materials with the Securities and Exchange Commission (the &#8220;SEC&#8221;), including a registration statement on Form S-4 that will contain a proxy statement / prospectus / information statement. Investors and security holders of American DG and Tecogen are urged to read these materials when they become available because they will contain important information about American DG, Tecogen, and the Merger. The proxy statement / prospectus / information statement and other relevant materials (when they become available ), and any other documents filed by either company with the SEC, may be obtained free of charge at the SEC website at </font><font style="font-family:inherit;font-size:10pt;font-style:italic;">www.sec.gov</font><font style="font-family:inherit;font-size:10pt;">. Investors and security holders are urged to read the proxy statement / prospectus / information statement and the other relevant materials when they become available before making any voting or investment decision with respect to the Merger.</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">American DG, the Merger Subsidiary, their respective directors and executive officers and certain other members of its management and employees may be deemed to be participants in the solicitation of proxies in connection with the Special Meeting. Additional information regarding the interests of such potential participants will be included or incorporated by reference in the definitive proxy statement/prospectus (when available).</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">Information Regarding Certain Relationships and Related Transactions</font></div><div style="line-height:120%;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">American DG and Tecogen are affiliated companies by virtue of common leadership. Charlie Maxwell, the Chairman of the board of directors of American DG, is also a member of the board of directors of Tecogen. John Hatsopoulos, a member of the board of directors and co-CEO of American DG, is also a member of the board of directors and co-CEO of Tecogen. Benjamin Locke is co-CEO of American DG and co-CEO of Tecogen. Robert Panora is director of operations of American DG and president and chief operating officer of Tecogen.</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Tecogen pays certain operating expenses, including benefits and payroll, on behalf of American DG and the American DG leases office space from Tecogen. These costs are reimbursed by American DG. Tecogen is also the primary supplier of </font></div><div><br></div><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><hr style="page-break-after:always"><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><div><br></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">equipment to American DG.</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">For further information about American DG Energy's relationships and transactions with Tecogen, Inc. and other related person transactions, please see each Company&#8217;s Annual Report on Form&#160;10-K for the year ended December&#160;31, 2015, the Companies' definitive Proxy Statement for the Annual Meeting of Stockholders held in June 2016, and any of the Companies' SEC filings filed since the Proxy Statement. The Company&#8217;s filings with the SEC, including the Annual Report, the Proxy Statement and the Quarterly Report, are available at the SEC&#8217;s website at www.sec.gov. Copies of certain of the Company&#8217;s agreements with these related parties are publicly available as exhibits to the Company&#8217;s public filings with the SEC and accessible at the SEC&#8217;s website.</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div><a name="s98939e31306e47b8afb04991f60e687c"></a></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Item 7.01 Regulation FD Disclosure</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">On November 2, 2016, American DG and Tecogen issued a joint press release announcing the execution of the Merger Agreement. A copy of that press release is attached to this Current Report on Form 8-K as Exhibit 99.1. The information in this press release shall not be deemed to be &#8220;filed&#8221; for the purposes of Section 18 of the Exchange Act or otherwise subject to the liabilities of that section.</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div><a name="s40f5e4245cbc48ceb3c2ba9f20dd979d"></a></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Item 9.01. Financial Statements and Exhibits.</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(d) Exhibits.</font></div><div style="line-height:120%;padding-bottom:8px;text-align:center;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:64.84375%;border-collapse:collapse;text-align:left;"><tr><td colspan="2"></td></tr><tr><td style="width:21%;"></td><td style="width:79%;"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Exhibit No.</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Description of Exhibit</font></div></td></tr><tr><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2.1</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Agreement and Plan of Merger, dated November 1, 2016, among the Company, Tecogen, Inc. and Tecogen.ADGE Acquisition Corp.</font></div></td></tr><tr><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">99.1</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Merger Press Release dated November 2, 2016</font></div></td></tr></table></div></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div><a name="sbde1ab1e00a84a6bb7e77ea1efd8b7f2"></a></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">SIGNATURE</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">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 thereunto duly authorized.</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div><div style="line-height:120%;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td style="width:8%;"></td><td style="width:44%;"></td><td style="width:48%;"></td></tr><tr><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Date:</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">November 2, 2016</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">AMERICAN DG ENERGY INC.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">By: /s/ Bonnie Brown</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Bonnie Brown, Chief Financial Officer</font></div></td></tr></table></div></div><div><br></div><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div>	</body>
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Document
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) November 2, 2016 (November 1, 2016)
AMERICAN DG ENERGY INC.
(Exact Name of Registrant as Specified in Its Charter)
Delaware
(State or Other Jurisdiction of Incorporation)
001-34493
04-3569304
(Commission File Number)
(IRS Employer Identification No.)
45 First Avenue
Waltham, Massachusetts
02451
(Address of Principal Executive Offices)
(Zip Code)
(781) 522-6020
(Registrant's Telephone Number, Including Area Code)
_______________________________________________
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
þ
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
¨
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
¨
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
¨
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Item 1.01.    Entry into a Material Definitive Agreement
Merger Agreement
On November 1, 2016, American DG Energy, Inc. (NYSE MKT: ADGE), a Delaware corporation ("American DG"), entered into an Agreement and Plan of Merger dated, as of November 1, 2016 (the "Merger Agreement") among American DG, Tecogen, Inc. (Nasdaq: TGEN), a Delaware corporation ("Tecogen"), and Tecogen.ADGE Acquisition Corp., a Delaware corporation and a wholly-owned subsidiary of Tecogen ("Merger Subsidiary").
Under the terms of the Merger Agreement, Merger Subsidiary will merge with and into American DG, with American DG becoming a wholly-owned subsidiary of Tecogen and the surviving corporation of the transaction (the "Merger"). The Merger is intended to qualify for federal income tax purposes as a tax-free reorganization under the provisions of Section 368(a) of the Internal Revenue Code of 1986. Subject to the terms and conditions of the Merger Agreement and shareholder approval, at the closing of the Merger, each outstanding share of American DG common stock will be converted into the right to receive approximately 0.092 shares of common stock of Tecogen ("the Exchange Ratio"). Consummation of the Merger is subject to customary closing conditions, including, among other things, approval by the stockholders of Tecogen and American DG. The Merger Agreement does not contain any termination, prohibitions on termination, no-shop clause, or reimbursements of Merger related expenses. As part of the Merger Agreement, American DG and Tecogen have made customary mutual representations and warranties.
Also in connection with the Merger, Tecogen will, at the effective time of the Merger, assume the (a) outstanding
stock options of American DG and (b) outstanding warrants of American DG, each as adjusted pursuant to the Exchange Ratio
and subject to the terms of the Merger Agreement. All outstanding stock options and restricted stock units of American DG
will be cancelled and extinguished at the effective time of the Merger without any right to receive any consideration in American DG.
The officers, directors, and large shareholders of Tecogen and American DG have not entered into any voting or support agreements in connection with the Merger.
The preceding summary does not purport to be complete and is qualified in its entirety by reference to the Merger Agreement, which is filed as Exhibit 2.1 to this Current Report on Form 8-K and which is incorporated herein by reference.
Additional Information about the Merger and Where to Find It
In connection with the Merger, American DG and Tecogen intend to file relevant materials with the Securities and Exchange Commission (the "SEC"), including a registration statement on Form S-4 that will contain a proxy statement / prospectus / information statement. Investors and security holders of American DG and Tecogen are urged to read these materials when they become available because they will contain important information about American DG, Tecogen, and the Merger. The proxy statement / prospectus / information statement and other relevant materials (when they become available ), and any other documents filed by either company with the SEC, may be obtained free of charge at the SEC website at
www.sec.gov
. Investors and security holders are urged to read the proxy statement / prospectus / information statement and the other relevant materials when they become available before making any voting or investment decision with respect to the Merger.
American DG, the Merger Subsidiary, their respective directors and executive officers and certain other members of its management and employees may be deemed to be participants in the solicitation of proxies in connection with the Special Meeting. Additional information regarding the interests of such potential participants will be included or incorporated by reference in the definitive proxy statement/prospectus (when available).
Information Regarding Certain Relationships and Related Transactions
American DG and Tecogen are affiliated companies by virtue of common leadership. Charlie Maxwell, the Chairman of the board of directors of American DG, is also a member of the board of directors of Tecogen. John Hatsopoulos, a member of the board of directors and co-CEO of American DG, is also a member of the board of directors and co-CEO of Tecogen. Benjamin Locke is co-CEO of American DG and co-CEO of Tecogen. Robert Panora is director of operations of American DG and president and chief operating officer of Tecogen.
Tecogen pays certain operating expenses, including benefits and payroll, on behalf of American DG and the American DG leases office space from Tecogen. These costs are reimbursed by American DG. Tecogen is also the primary supplier of
equipment to American DG.
For further information about American DG Energy's relationships and transactions with Tecogen, Inc. and other related person transactions, please see each Company's Annual Report on Form 10-K for the year ended December 31, 2015, the Companies' definitive Proxy Statement for the Annual Meeting of Stockholders held in June 2016, and any of the Companies' SEC filings filed since the Proxy Statement. The Company's filings with the SEC, including the Annual Report, the Proxy Statement and the Quarterly Report, are available at the SEC's website at www.sec.gov. Copies of certain of the Company's agreements with these related parties are publicly available as exhibits to the Company's public filings with the SEC and accessible at the SEC's website.
Item 7.01 Regulation FD Disclosure
On November 2, 2016, American DG and Tecogen issued a joint press release announcing the execution of the Merger Agreement. A copy of that press release is attached to this Current Report on Form 8-K as Exhibit 99.1. The information in this press release shall not be deemed to be "filed" for the purposes of Section 18 of the Exchange Act or otherwise subject to the liabilities of that section.
Item 9.01. Financial Statements and Exhibits.
(d) Exhibits.
Exhibit No.
Description of Exhibit
2.1
Agreement and Plan of Merger, dated November 1, 2016, among the Company, Tecogen, Inc. and Tecogen.ADGE Acquisition Corp.
99.1
Merger Press Release dated November 2, 2016
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 thereunto duly authorized.
Date:
November 2, 2016
AMERICAN DG ENERGY INC.
By: /s/ Bonnie Brown
Bonnie Brown, Chief Financial Officer