Sec Form 3 Filing - AMERICAN INTERNATIONAL GROUP INC @ ClearBridge Energy Midstream Opportunity Fund Inc. - 2018-11-16

FORM 3 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 AMERICAN INTERNATIONAL GROUP INC 2. Issuer Name and Ticker or Trading Symbol ClearBridge Energy Midstream Opportunity Fund Inc. [ EMO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) X __ Other (specify below) See Remarks (Last) (First) (Middle) 175 WATER STREET 3. Date of Earliest Transaction (MM/DD/YY) 11/16/2018 (Street) NEW YORK, NY10038 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 Series D Mandatory Redeemable Preferred Stock 30 I Held through subsidiaries ( 1 ) Series E Mandatory Redeemable Preferred Stock 70 I Held through subsidiaries ( 2 ) 4.51% Series C Senior Secured Notes due October 15, 2023 16,887,467.92 ( 3 ) I Held through subsidiaries ( 4 ) 4.66% Series D Senior Secured Notes due October 15, 2025 22,643,477.92 ( 3 ) I Held through subsidiaries ( 5 )

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 AMERICAN INTERNATIONAL GROUP INC 175 WATER STREET NEW YORK, NY10038 See Remarks Signatures /s/ Geoffrey N. Cornell, Authorized Signatory of American International Group, Inc. 11/16/2018 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Lexington Insurance Company ("Lexington") and The United States Life Insurance Company in The City of New York ("USLIC"), each an indirect wholly owned subsidiary of American International Group, Inc. ("AIG"), directly hold 10 shares and 20 shares, respectively, of the Series D Mandatory Redeemable Preferred Stock of the issuer (the "Series D MRPS"). AIG is an indirect beneficial owner of the Series D MRPS. ( 2 )American General Life Insurance Company ("AGLIC") and Lexington, each an indirect wholly owned subsidiary of AIG, directly hold 47 shares and 23 shares, respectively, of the Series E Mandatory Redeemable Preferred Stock of the issuer (the "Series E MRPS"). AIG is an indirect beneficial owner of the Series E MRPS. ( 3 )The amount shown reflects a cash dollar value. ( 4 )AGLIC and American Home Assurance Company ("AHAC"), each an indirect wholly owned subsidiary of AIG, directly hold $11,525,696.92 principal amount and $5,361,771.00 principal amount, respectively, of the 4.51% Series C Senior Secured Notes due October 15, 2023 of the issuer (the "Series C Notes"). AIG is an indirect beneficial owner of the Series C Notes. ( 5 )AGLIC, AHAC, USLIC and The Variable Annuity Life Insurance Company ("VALIC"), each an indirect wholly owned subsidiary of AIG, directly hold $3,000,260.87 principal amount, $7,189,304.00 principal amount, $2,264,347.83 principal amount and $10,189,565.22 principal amount, respectively, of the 4.66% Series D Senior Secured Notes due October 15, 2025 of the issuer (the "Series D Notes"). AIG is an indirect beneficial owner of the Series D Notes.

Remarks: Filed pursuant to Section 30(h) of the Investment Company Act of 1940.

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).

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