Sec Form 4 Filing - Sun Life Assurance Co of Canada @ Kayne Anderson MLP/Midstream Investment Co - 2020-05-07

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 Sun Life Assurance Co of Canada 2. Issuer Name and Ticker or Trading Symbol Kayne Anderson MLP/Midstream Investment Co [ KYN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) X __ Other (specify below) Former 10% Owner (Last) (First) (Middle) ONE YORK STREET 3. Date of Earliest Transaction (MM/DD/YY) 05/07/2020 (Street) TORONTO, A6MJ5 OB6 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ 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 Mandatory Redeemable Preferred Shares Series C 04/29/2020 J( 1 ) 217,048.98 D $ 5,531,332.96 822,951.02 D ( 2 ) Mandatory Redeemable Preferred Shares Series C 04/29/2020 J( 1 ) 217,048.98 D $ 5,531,332.96 822,951.02 I ( 2 ) See footnote ( 2 )

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

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Sun Life Assurance Co of Canada ONE YORK STREET TORONTO, A6MJ5 OB6 Former 10% Owner SUN LIFE FINANCIAL INC ONE YORK STREET TORONTO, A6MJ5 OB6 X Signatures /s/ Randolph B. Brown, Authorized Signatory of Sun Life Financial Inc. and Sun Life Assurance Co of Canada 07/23/2020 Signature of Reporting Person Date /s/ Stephen C. Peacher, Authorized Signatory of Sun Life Financial Inc. and Sun Life Assurance Co of Canada 07/23/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On April 29, 2020, the issuer redeemed a portion of its Series C Mandatory Redeemable Preferred Stock held by the Reporting Persons. ( 2 )Sun Life Financial Inc. owns 100% of the outstanding shares of common stock of Sun Life Assurance Co of Canada, the direct owner of the Series C Mandatory Redeemable Preferred Stock of Kayne Anderson MLP Investment Co.

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).

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