Sec Form 4 Filing - Milner David H. @ New Senior Investment Group Inc. - 2021-09-21

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Milner David H. 2. Issuer Name and Ticker or Trading Symbol New Senior Investment Group Inc. [ SNR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O NEW SENIOR INVESTMENT GROUP INC., 55 WEST 46TH STREET, SUITE 2204 3. Date of Earliest Transaction (MM/DD/YY) 09/21/2021 (Street) NEW YORK, NY10036 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 09/21/2021 D 193,618.2398 D 0 D Common Stock 09/21/2021 D 15,129 D 0 D

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 7. Title and Amount of Underlying Securities (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 of Derivative Security: 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 Stock Options (Right to Buy) $ 6.17 09/21/2021 D 5,000 ( 3 ) 03/26/2028 Common Stock 5,000 ( 3 ) 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Milner David H. C/O NEW SENIOR INVESTMENT GROUP INC. 55 WEST 46TH STREET, SUITE 2204 NEW YORK, NY10036 X Signatures /s/ Lori B. Marino, Attorney-in-fact for David H. Milner 09/23/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Pursuant to the Agreement and Plan of Merger, dated as of June 28, 2021 (as amended, supplemented or otherwise modified from time to time, the "Merger Agreement"), by and among New Senior Investment Group Inc., a Delaware corporation ("New Senior"), Ventas, Inc., a Delaware corporation ("Ventas") and Cadence Merger Sub LLC, a Delaware limited liability company and subsidiary of Ventas, each outstanding share of New Senior common stock, par value $0.01 ("Common Stock"), was converted into the right to receive 0.1561 (the "Exchange Ratio") of a newly issued share of Ventas common stock, par value $0.25 per share ("Ventas Common Stock"). Holders of record of Common Stock will receive cash in lieu of fractional shares. ( 2 )Pursuant to the Merger Agreement, each outstanding New Senior restricted stock unit award became fully vested and was canceled and converted into the right to receive a number of shares of Ventas Common Stock equal to the product of (a) the Exchange Ratio and (b) the number of shares of Common Stock subject to such restricted stock unit award, less applicable withholding taxes. ( 3 )Pursuant to the Merger Agreement, each outstanding New Senior stock option became fully vested and was canceled and converted into the right to receive an amount in cash equal to the product of (a) the excess, if any, of (i) $8.82 over (ii) the per share exercise price of such stock option, and (b) the total number of shares of Common Stock subject to such stock option immediately prior to the effective time of the Merger, less applicable withholding taxes. Any outstanding New Senior stock option with an exercise price equal to or greater than $8.82 was canceled for no consideration.

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