SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* PROMETHEUS SENIOR QUARTERS LLC (Last) (First) (Middle) 30 ROCKEFELLER PLAZA (Street) NEW YORK NY 10020 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 05/12/2011	3. Issuer Name and Ticker or Trading Symbol VENTAS INC [ VTR ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)	5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	24,958,543(3)	I(3)(4)(5)(6)	See Footnote(1)(2)(3)(4)(5)(6)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person* PROMETHEUS SENIOR QUARTERS LLC (Last) (First) (Middle) 30 ROCKEFELLER PLAZA (Street) NEW YORK NY 10020 (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* Lazard Senior Housing Partners LP (Last) (First) (Middle) 30 ROCKEFELLER PLAZA (Street) NEW YORK NY 10020 (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* LSHP Coinvestment Partnership I LP (Last) (First) (Middle) 30 ROCKEFELLER PLAZA (Street) NEW YORK NY 10020 (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* LFSRI II CADIM ALTERNATIVE PARTNERSHIP L P (Last) (First) (Middle) 30 ROCKEFELLER PLAZA (Street) NEW YORK NY 10020 (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* LF STRATEGIC REALTY INVESTORS II L P (Last) (First) (Middle) 30 ROCKEFELLER PLAZA (Street) NEW YORK NY 10020 (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* LFSRI II ALTERNATIVE PARTNERSHIP L P (Last) (First) (Middle) 30 ROCKEFELLER PLAZA (Street) NEW YORK NY 10020 (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* LAZARD FRERES REAL ESTATE INVESTORS LLC (Last) (First) (Middle) 30 ROCKEFELLER PLAZA (Street) NEW YORK NY 10020 (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* Lazard Senior Housing Partners GP LLC (Last) (First) (Middle) 30 ROCKEFELLER PLAZA (Street) NEW YORK NY 10020 (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* LSHP Coinvestment I GP LLC (Last) (First) (Middle) 30 ROCKEFELLER PLAZA (Street) NEW YORK NY 10020 (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* Lazard Alternative Investments LLC (Last) (First) (Middle) 30 ROCKEFELLER PLAZA (Street) NEW YORK NY 10020 (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. This statement is being filed jointly by (i) Prometheus Senior Quarters LLC, a Delaware limited liability company ("Prometheus"), (ii) Lazard Senior Housing Partners LP, a Delaware limited partnership ("LSHP"), (iii) LSHP Coinvestment Partnership I LP, a Delaware limited partnership ("LSHP Coinvest"), (iv) LFSRI II-CADIM Alternative Partnership L.P., a Delaware limited partnership, (v) LF Strategic Realty Investors II L.P., a Delaware limited partnership, (vi) LFSRI II Alternative Partnership L.P., a Delaware limited partnership, (vii) Lazard Freres Real Estate Investors L.L.C., a New York limited liability company ("LFREI"), (viii) Lazard Senior Housing Partners GP LLC, a Delaware limited liability company ("LSHP GP"),

2. [continued from Footnote 1](ix) LSHP Coinvestment I GP LLC, a Delaware limited liability company ("LSHP Coinvest GP"), (x) Lazard Alternative Investments LLC, a Delaware limited liability company ("LAI"), (xi) Lazard Alternative Investments Holdings LLC, a Delaware limited liability company ("LAI Holdings"), and (xii) LFCM Holdings LLC, a Delaware limited liability company (collectively, the "Reporting Persons"). As a result of the 10 Reporting Person per joint filing limitation of the electronic system, this Form 3 is being filed in duplicate (10 Reporting Persons have filed on this Form 3 and 2 Reporting Persons have filed on a duplicate Form 3).

3. On May 12, 2011, Prometheus, LSHP and LSHP Coinvest were issued 17,928,146, 5,813,718 and 1,216,679 shares, respectively (in the aggregate, the "Merger Shares"), of common stock, par value $0.25 ("Common Stock"), of Ventas, Inc., a Delaware corporation (the "Issuer"), in connection with the Issuer's acquisition of substantially all of the real estate assets of Atria Senior Living Group, Inc, a Delaware corporation, One Lantern Senior Living Inc, a Delaware corporation, and LSHP Coinvestment I Inc., a Delaware corporation.

4. The Managing Members of Prometheus are LFSRI II-CADIM Alternative Partnership L.P., LF Strategic Realty Investors II L.P. and LFSRI II Alternative Partnership L.P. and LFREI is the general partner of each such limited partnership. LSHP GP is the general partner of LSHP. LSHP Coinvest GP is the general partner of LSHP Coinvest. LAI is the Managing Member of each of LFREI, LSHP GP and LSHP Coinvest GP. LAI is a wholly owned subsidiary of LAI Holdings, which is a wholly owned subsidiary of LFCM Holdings LLC.

5. On May 12, 2011, the Funds and the Issuer entered into an agreement pursuant to which the Funds, collectively, have the right to designate one individual for nomination to the board of directors of the Issuer for so long as the Funds and certain transferees collectively beneficially own Merger Shares representing 3% or more of the outstanding shares of the Common Stock.

6. The Merger Shares beneficially owned by Prometheus may be deemed to be beneficially owned by each of LFSRI II-CADIM Alternative Partnership L.P., LF Strategic Realty Investors II L.P. and LFSRI II Alternative Partnership L.P., as its Managing Members, and by LFREI, as their general partner. The Merger Shares beneficially owned by LSHP may be deemed to be beneficially owned by LSHP GP, as its general partner. The Merger Shares beneficially owned by LSHP Coinvest may be deemed to be beneficially owned by LSHP Coinvest GP, as its general partner. LAI (as the Managing Member of each of LFREI, LSHP GP and LSHP Coinvest GP), LAI Holdings (as the parent of LAI), and LFCM Holdings LLC (as the parent of LAI Holdings and the ultimate parent of LAI) may be deemed to beneficially own all of the Merger Shares. Each of the Reporting Persons expressly disclaims beneficial ownership of the Merger Shares, except to the extent of its pecuniary interest therein, if any.

	PROMETHEUS SENIOR QUARTERS LLC, By: Lazard Freres Real Estate Investors L.L.C., the General Partner of its Managing Members, By: /s/ Matthew J Lustig, Managing Principal	05/16/2011
	LAZARD SENIOR HOUSING PARTNERS LP, By: Lazard Senior Housing Partners GP LLC, its General Partner, By: /s/ Matthew J. Lustig, Managing Principal and CEO	05/16/2011
	LSHP COINVESTMENT PARTNERSHIP I LP, By: LSHP Coinvestment I GP LLC, its General Partner, By: /s/ Matthew J. Lustig, Managing Principal and CEO	05/16/2011
	LFSRI II-CADIM ALTERNATIVE PARTNERSHIP L.P., By: Lazard Freres Real Estate Investors L.L.C., its General Partner, By: /s/ Matthew J. Lustig, Managing Principal	05/16/2011
	LF STRATEGIC REALTY INVESTORS II L.P., By: Lazard Freres Real Estate Investors L.L.C., its General Partner, By: /s/ Matthew J. Lustig, Managing Principal	05/16/2011
	LFSRI II ALTERNATIVE PARTNERSHIP L.P, By: Lazard Freres Real Estate Investors L.L.C., its General Partner, By: /s/ Matthew J. Lustig, Managing Principal	05/16/2011
	LAZARD FRERES REAL ESTATE INVESTORS L.L.C., By: /s/ Matthew J. Lustig, Managing Principal	05/16/2011
	LAZARD SENIOR HOUSING PARTNERS GP LLC, By: /s/ Matthew J. Lustig, Managing Principal and CEO	05/16/2011
	LSHP COINVESTMENT I GP LLC, By: /s/ Matthew J. Lustig, Managing Principal and CEO	05/16/2011
	LAZARD ALTERNATIVE INVESTMENTS LLC, By: /s/ Matthew J. Lustig, Managing Director	05/16/2011
	** Signature of Reporting Person	Date
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* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
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