Sec Form 4 Filing - AMERICAN INTERNATIONAL GROUP, INC. @ ClearBridge Energy Midstream Opportunity Fund Inc. - 2023-10-15

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

OMB APPROVAL OMB Number: 3235-0287 Expires: November 30, 2011 Estimated average burden hours per response... 0.5

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) 1271 AVENUE OF THE AMERICAS 3. Date of Earliest Transaction (MM/DD/YY) 10/15/2023 (Street) NEW YORK, NY10020 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 4.51% Series G Senior Secured Notes due October 15, 2023 10/15/2023 J( 1 ) 4,097,638.26 D $ 4,190,553.34 $ 0 I Held through subsidiaries ( 2 ) 4.66% Series H Senior Secured Notes due October 15, 2025 $ 5,494,298.53 I Held through subsidiaries ( 3 )

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. 1271 AVENUE OF THE AMERICAS NEW YORK, NY10020 See Remarks AMERICAN GENERAL LIFE INSURANCE CO 2727-A ALLEN PARKWAY HOUSTON, TX77019 See Remarks Signatures /s/ Sabra Purtill, Authorized Signatory of American International Group, Inc. 10/17/2023 Signature of Reporting Person Date /s/ Julie A. Cotton Hearne, Authorized Signatory of American General Life Insurance Company 10/17/2023 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The reported disposition was pursuant to a full payment at maturity by the issuer of 100% of the aggregate principal amount outstanding of the securities, plus accrued and unpaid interest. ( 2 )Prior to their maturity, American General Life Insurance Company ("AGLIC"), an indirectly controlled subsidiary of American International Group, Inc. ("AIG"), and American Home Assurance Company ("AHAC"), an indirect wholly owned subsidiary of AIG, directly held $2,796,638.11 principal amount and $1,301,000.15 principal amount of the reported securities, respectively. AIG was an indirect beneficial owner of the 4.51% Series G Senior Secured Notes due October 15, 2023. ( 3 )AGLIC, AHAC, The United States Life Insurance Company in The City of New York, an indirectly controlled subsidiary of AIG, and The Variable Annuity Life Insurance Company, an indirectly controlled subsidiary of AIG, directly hold $727,994.46 principal amount, $1,744,439.63 principal amount, $549,430.31 principal amount and $2,472,434.13 principal amount of the reported securities, respectively. AIG is an indirect beneficial owner of the 4.66% Series H Senior Secured Notes due October 15, 2025.

Remarks: Filed pursuant to Section 30(h) of the Investment Company Act of 1940. As a result of the transaction reported on this Form 4, AGLIC is no longer a reporting person subject to Section 16.

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).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.