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* ONEX CORP (Last) (First) (Middle) 161 BAY STREET (Street) TORONTO A6 M5J 2S1 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Genesis Healthcare, Inc. [ GEN ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 07/20/2017
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X 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

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
Class B Common Stock	(1)	07/20/2017		S			405,020(3)	05/18/2007	(2)	Class A Common Stock	405,020	$1.5	9,212,687(3)	D
Class B Common Stock	(1)	07/20/2017		S			2,468(4)	05/18/2007	(2)	Class A Common Stock	2,468	$1.5	56,143(4)	D
Class B Common Stock	(1)	07/20/2017		S			121,512(5)	05/18/2007	(2)	Class A Common Stock	121,512	$1.5	2,763,961(5)	D
Class B Common Stock	(1)	07/20/2017		S			529,000(6)	05/18/2007	(2)	Class A Common Stock	529,000	$1.5	12,032,791(6)	I	See footnote(7)
Class B Common Stock	(1)	07/20/2017		S			529,000(8)	05/18/2007	(2)	Class A Common Stock	529,000	$1.5	12,032,791(8)	I	See footnote(9)

1. Name and Address of Reporting Person* ONEX CORP (Last) (First) (Middle) 161 BAY STREET (Street) TORONTO A6 M5J 2S1 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* SCHWARTZ GERALD W (Last) (First) (Middle) 161 BAY STREET 49TH FLOOR (Street) TORONTO A6 M5J 2S1 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* ONEX PARTNERS LP (Last) (First) (Middle) C/O ONEX INVESTMENT CORPORATION 712 FIFTH AVENUE (Street) NEW YORK NY 10019 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Onex US Principals LP (Last) (First) (Middle) 421 LEADER STREET (Street) MARION OH 43302 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Onex Real Estate Holdings III Inc. (Last) (First) (Middle) 421 LEADER STREET (Street) MARION OH 43302 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. Convertible on a one-for-one basis automatically upon transfer to a third party.

2. No Expiration.

3. Represents shares of Class B Common Stock directly owned by Onex Partners LP. All of the shares owned directly by Onex Partners LP are reported as beneficially owned by each of Onex Partners LP, Onex Corporation and Gerald W. Schwartz, notwithstanding the fact that each of Onex Corporation and Mr. Schwartz has a pecuniary interest of less than 100% of such shares. Each of Onex Partners LP, Onex Corporation and Mr. Schwartz disclaims beneficial ownership of these securities except to the extent of its or his pecuniary interest therein, and the inclusion of such shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

4. Represents shares of Class B Common Stock directly owned by Onex US Principals LP. All of the shares directly owned by Onex US Principals LP are reported as beneficially owned by each of Onex US Principals LP, Onex Corporation and Mr. Schwartz, notwithstanding the fact that each of Onex Corporation and Mr. Schwartz has a pecuniary interest of less than 100% of such shares. Each of Onex US Principals LP, Onex Corporation and Mr.Schwartz disclaims beneficial ownership of these securities except to the extent of its or his pecuniary interest therein, and the inclusion of such shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

5. Represents shares of Class B Common Stock directly owned by Onex Real Estate Holdings III Inc. All of the shares directly owned by Onex Real Estate Holdings III Inc. are reported as beneficially owned by each of Onex Real Estate Holdings III Inc., Onex Corporation and Mr. Schwartz, notwithstanding the fact that each of Onex Corporation and Mr. Schwartz has a pecuniary interest of less than 100% of such shares. Each of Onex Real Estate Holdings III Inc., Onex Corporation and Mr. Schwartz disclaims beneficial ownership of these securities except to the extent of its or his pecuniary interest therein, and the inclusion of such shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

6. Represents shares of Class B Common Stock indirectly owned by Onex Corporation, and consists of shares owned directly by Onex Partners LP, Onex US Principals LP, and Onex Real Estate Holdings III Inc., as described in footnotes 3, 4, and 5 above. See footnote 7 for a description of the nature of Onex Corporation's indirect ownership of such shares.

7. Onex Corporation may be deemed to beneficially own the shares of Class B Common Stock held directly by (a) Onex Partners LP, through its ownership of all of the common stock of Onex Partners GP Inc., the general partner of Onex Partners GP LP, the general partner of Onex Partners LP, (b) Onex US Principals LP, through its ownership of all of the equity of Onex American Holdings II LLC, which owns all of the equity of Onex American Holdings GP LLC, the general partner of Onex US Principals LP and (c) Onex Real Estate Holdings III Inc., through its ownership of all of the common stock of Onex Real Estate Holdings III Inc. Onex Corporation disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of such shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

8. Represents shares of Class B Common Stock indirectly owned by Mr. Schwartz, and consists of shares beneficially owned by Onex Corporation. See footnote 9 for a description of the nature of Mr. Schwartz's indirect ownership of such shares.

9. Mr. Schwartz, the Chairman, President and Chief Executive Officer of Onex Corporation, also indirectly holds a majority of the voting rights of the shares of Onex Corporation. As a result, he may be deemed to beneficially own all shares of Class B Common Stock beneficially owned by Onex Corporation (see footnote 7). Mr. Schwartz disclaims beneficial ownership of these securities 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 of the reported shares for purposes of Section 16 or for any other purpose.

Remarks:

	/s/ Joshua Hausman, Managing Director of Onex Partners Manager GP ULC, the general partner of Onex Partners Manager LP, the agent of Onex Partners GP LP, the general partner of Onex Partners LP.	07/21/2017
	/s/ Joshua Hausman, Director of Onex American Holdings GP LLC, the general partner of Onex US Principals LP.	07/21/2017
	/s/ David Copeland, Vice President of the Onex Real Estate Holdings III Inc.	07/21/2017
	/s/ Andrea E. Daly, Managing Director and General Counsel of Onex Corporation	07/21/2017
	/s/ Andrea E. Daly, attorney-in-fact for Gerald W. Schwartz, Power of Attorney incorporation by reference to the Schedule 13G/A with respect to the Fly Leasing Limited filed by Gerald W. Schwartz (and the other signatories thereto) on April 3, 2017.	07/21/2017
	** Signature of Reporting Person	Date
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