SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* RYAN J. STUART (Last) (First) (Middle) 591 REDWOOD HIGHWAY, SUITE 3215 (Street) MILL VALLEY CA 94941 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol CALPINE CORP [ CPN ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 05/15/2012
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/15/2012		A		8,036(1)	A	$0	77,509,375(2)(3)(4)	I	See Footnotes

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents award of restricted stock units pursuant to Calpine Corporation's 2008 Director Incentive Plan. The award vests on the earlier to occur of (i) the first anniversary of the grant date or (ii) the day immediately preceding the date of the 2013 annual meeting of stockholders. The shares become payable on the earliest to occur of (i) the reporting person's elected distribution date, (ii) the consummation of a change in control, or (iii) upon termination of service on the board of directors. Each restricted stock unit represents a contingent right to receive one share of Calpine Corporation common stock. The restricted stock units are payable solely in common stock. This award of restricted stock units was made to J. Stuart Ryan ("JSR") as a Director and Chairman of the Board of the Issuer. These units are in addition to 23,802 restricted stock units previously awarded to JSR. Additionally, JSR directly owns 5,029 shares of the Issuer's common stock.

2. Additionally, 70,541,012 shares of the Issuer's common stock are owned directly by SPO Partners II, L.P. ("SPO Partners"), and may be deemed to be indirectly beneficially owned by (i) SPO Advisory Partners, L.P. ("SPO Advisory"), the sole general partner of SPO Partners, (ii) SPO Advisory Corp. ("SPO Corp."), the sole general partner of SPO Advisory, and (iii) John H. Scully ("JHS") and Edward H. McDermott ("EHM"), the two controlling persons of SPO Corp. Additionally, 2,697,096 shares of the Issuer's common stock are owned directly by San Francisco Partners, L.P. ("SF Partners"), and may be deemed to be indirectly beneficially owned by (i) SF Advisory Partners, L.P. ("SF Advisory"), the sole general partner of SF Partners, (ii) SPO Corp., the sole general partner of SF Advisory, and (iii) JHS and EHM, the two controlling persons of SPO Corp.

3. Additionally, 4,234,400 shares of the Issuer's common stock are owned directly by SPO Partners II Co-Investment Partnership, L.P. ("SPO Co-Invest"), and may be deemed to be indirectly beneficially owned by (i) SPO Advisory, the sole general partner of SPO Co-Invest, (ii) SPO Corp., the sole general partner of SPO Advisory, and (iii) JHS and EHM, the two controlling persons of SPO Corp. Additionally, JHS owns 5,000 shares of the Issuer's common stock in his IRA, which is self-directed. Additionally, EHM owns 5,600 shares of the Issuer's common stock in his IRA, which is self-directed.

4. Additionally, these shares may be deemed to be indirectly beneficially owned by JSR and his investment vehicle, Rydout LLC ("Rydout"), solely in his advisory capacity to SPO Corp., with respect to investments by SPO Partners, SF Partners, and SPO Co-Invest in securities of Calpine Corporation.

	Kim M. Silva	05/17/2012
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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