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* Lazar Michael B (Last) (First) (Middle) C/O BLACKROCK KELSO CAPITAL CORPORATION 40 EAST 52ND STREET (Street) NEW YORK NY 10022 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol BlackRock Kelso Capital CORP [ BKCC ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) X Other (specify below) Chief Operating Officer / C.O.O. of investment adviser
	3. Date of Earliest Transaction (Month/Day/Year) 03/13/2008
	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, par value $0.001 per share	03/13/2008		P		300	A	$10.93	31,946.01	I	By Michael B. Lazar IRA(1)
Common Stock, par value $0.001 per share	03/13/2008		P		300	A	$10.93	32,246.01	I	By Michael B. Lazar IRA(1)
Common Stock, par value $0.001 per share	03/13/2008		P		100	A	$10.93	32,346.01	I	By Michael B. Lazar IRA(1)
Common Stock, par value $0.001 per share	03/13/2008		P		300	A	$10.93	32,646.01	I	By Michael B. Lazar IRA(1)
Common Stock, par value $0.001 per share	03/13/2008		P		300	A	$10.94	32,946.01	I	By Michael B. Lazar IRA(1)
Common Stock, par value $0.001 per share	03/13/2008		P		100	A	$10.94	33,046.01	I	By Michael B. Lazar IRA(1)
Common Stock, par value $0.001 per share	03/13/2008		P		100	A	$10.94	33,146.01	I	By Michael B. Lazar IRA(1)
Common Stock, par value $0.001 per share	03/13/2008		P		1,000	A	$10.95	34,146.01	I	By Michael B. Lazar IRA(1)
Common Stock, par value $0.001 per share	03/13/2008		P		2,500	A	$10.9399	46,723.82(2)(3)	D
Common Stock, par value $0.001 per share								41,543.91	I	By BlackRock Kelso Capital Super Holdings LLC(4)
Common Stock, par value $0.001 per share								6,168.54	I	By BlackRock Kelso Capital Advisors LLC(5)
Common Stock, par value $0.001 per share								1,785.16	I	By Lazar 2005 Family Trust, U/T/A dated 6/14/2005(6)
Common Stock, par value $0.001 per share								965,844.04	I	By BlackRock Kelso Capital Advisors LLC(7)

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. The Reporting Person has a pecuniary interest in Michael B. Lazar IRA, which beneficially owns shares directly and which has a direct ownership interest in BlackRock Kelso Capital Super Holdings LLC ("Super"), which owns Common Stock of the Issuer through its indirect ownership of interests in BlackRock Kelso Capital Holding LLC ("Holding").

2. Includes 18,175.81 Restricted Shares granted by BlackRock Kelso Capital Advisors LLC ("Advisor"), pursuant to a Restricted Stock Agreement, dated December 31, 2007, vesting in equal installments on January 2, 2009, 2010 and 2011.

3. Includes 4,465.06 Restricted Shares granted by Advisor pursuant to a Restricted Stock Agreement, dated January 2, 2007, vesting in equal installments on January 2, 2009 and 2010.

4. Owned indirectly through the Reporting Person's direct ownership of interests in Super. See Footnote 1.

5. Owned indirectly through the Reporting Person's direct ownership of interests in Advisor, which owns Common Stock of the Issuer through its indirect ownership of interests in Holding.

6. The Reporting Person has a pecuniary interest in the Lazar 2005 Family Trust, U/T/A dated 6/14/2005, which has a direct ownership interest in Advisor. See Footnote 5. The Reporting Person disclaims beneficial ownership of the shares beneficially owned by such trust.

7. The Reporting Person, as a Manager of Advisor, may be deemed to beneficially own all the Common Stock of the Issuer owned by Advisor. The Reporting Person disclaims benefical ownership of such shares except to the extent of his pecuniary interest therein and the inclusion of such shares in this report shall not be deemed an admission of beneficial ownership of all the reported shares for purposes of Section 16 or otherwise.

	Michael B. Lazar, by Frank D. Gordon, Attorney-in-Fact	03/17/2008
	** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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