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): June 22, 2006

KCS Energy, Inc.

(Exact name of registrant as specified in its charter)

Delaware	1-13781	22-2889587
(State or other jurisdiction of	(Commission File Number)	(IRS Employer
incorporation)		Identification No.)

5555 San Felipe Road, Suite 1200
Houston, Texas	77056
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (713) 877-8006

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:

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))

Item 7.01 Regulation FD Disclosure.

On June 22, 2006, Petrohawk Energy Corporation (“Petrohawk”) and KCS Energy, Inc. (“KCS”) issued a press release announcing, among other matters, the expiration of the waiting period for U.S. antitrust review under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, in connection with the proposed merger of KCS and Petrohawk, KCS’s entry into certain derivative contracts covering 13,740 MMbtu/day of production for calendar year 2007, and the companies’ response to inquiries received by both KCS and Petrohawk as to whether the proposed merger will constitute a change of control with respect to the indenture governing the KCS 7 1/8% Senior Notes due 2012. A copy of the press release is furnished and attached as Exhibit 99.1 hereto and is incorporated herein by reference.

In accordance with General Instruction B.2. of Form 8-K, the information in this report and Exhibit 99.1 attached hereto is being furnished and is not deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and is not otherwise subject to the liabilities of that section. Accordingly, the information in this report and Exhibit 99.1 attached hereto will not be incorporated by reference into any filing made by KCS under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, unless specifically identified therein as being incorporated therein by reference.

Item 9.01 Financial Statements and Exhibits.

(d)

Exhibits.

Exhibit 99.1

Joint Press Release issued on June 22, 2006 by Petrohawk Energy Corporation and KCS Energy, Inc.

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.


	KCS ENERGY, INC.

Date: June 26, 2006	By:	/s/ Frederick Dwyer
		Name: Frederick Dwyer
		Title: Vice President, Controller and Secretary

EXHIBIT INDEX

Exhibit		Description

99.1		Joint Press Release issued on June 22, 2006 by Petrohawk Energy Corporation and KCS Energy, Inc.

KCS ENERGY INC 8-K