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): December 29, 2017

CALPINE CORPORATION
(Exact name of registrant as specified in its charter)

	
			
Delaware	1-12079	77-0212977	
(State or other jurisdiction
of incorporation)	(Commission
File Number)	(IRS Employer
Identification No.)	

717 Texas Avenue, Suite 1000, Houston, Texas 77002
(Addresses of principal executive offices and zip codes)

Registrant's telephone number, including area code: (713) 830-2000

Not applicable
(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 registrant under any of the following provisions ( see General Instruction A.2. below):
		
o	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))	
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

TABLE OF CONTENTS

	
			
 	ITEM 5.02 — DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT OF CERTAIN OFFICERS; COMPENSATORY ARRANGEMENTS OF CERTAIN OFFICERS	 	
 	SIGNATURES	 	

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ITEM 5.02 — DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT OF CERTAIN OFFICERS; COMPENSATORY ARRANGEMENTS OF CERTAIN OFFICERS
The amended and restated executive employment agreement (the “Employment Agreement”) between Calpine Corporation (the “Company”) and its Executive Vice President and Chief Legal Officer, W. Thaddeus Miller, dated as of December 18, 2015, is set to expire pursuant to its terms on December 31, 2017. Following the expiration of the Employment Agreement, pursuant to a letter dated as of December 29, 2017, Mr. Miller will continue to serve in his current role as an at-will employee. Mr. Miller will continue to receive his current annual base salary and be eligible for incentive compensation and employee benefits as were provided for in the Employment Agreement and under the Company’s programs.
W.G (Trey) Griggs III, Executive Vice President and President, Calpine Retail, will be leaving the Company subsequent to the consummation of the merger transaction with Energy Capital Partners and a consortium of investors that was approved by the Company’s stockholders on December 15, 2017. Mr. Griggs will be entitled to separation benefits as a Tier 3 participant under the Calpine Corporation Amended and Restated Change in Control and Severance Benefits Plan. Mr. Griggs’ planned departure is not the result of any disagreement with the Company on any matter relating to the Company’s operations, policies or practices.

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SIGNATURES

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.

CALPINE CORPORATION

	
					
 	 	 By:    	/s/ ZAMIR RAUF	 	
 	 	 	Zamir Rauf	 	
 	 	 	Executive Vice President and	 	
 	 	 	Chief Financial Officer	 	
 	 	 	 	 	
 	 Date: December 29, 2017	 	 	 	

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