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(\"CRBG\")."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001104659-26-086856","document":"tm2621018-2_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/5108/000110465926086856/tm2621018-2_4seq1.xml","form_type":"4"}},{"id":1017402,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":3379,"kind":"organization","name":"Corebridge Financial, Inc.","symbol":"CRBG","position":1,"cik":"0001889539","reported_name":"Corebridge Financial, Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}},{"id":28680,"kind":"organization","name":"AMERICAN GENERAL LIFE INSURANCE CO","position":2,"cik":"0000005108","reported_name":"AMERICAN GENERAL LIFE INSURANCE CO","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"4.66% Series H Senior Secured Notes due October 15, 2025","published_at":"2025-10-17T20:15:14.000Z","date":"2025-10-15","kind":"other","planned":false,"acquired":false,"shares":5494298.5,"price":5592315.68,"value":30725851652150.48,"ownership":{"direct":false,"nature":"Held through subsidiaries"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The 4.66% Series H Senior Secured Notes were redeemed by the issuer for full payment at maturity of 100% of the aggregate principal amount outstanding of the securities, plus accrued and unpaid interest through the redemption date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"American General Life Insurance Company (\"AGLIC\"), The United States Life Insurance Company in the City of New York (\"USL\") and The Variable Annuity Life Insurance Company (\"VAL\"), each an indirect wholly-owned subsidiary of Corebridge Financial, Inc. (\"CRBG\"), directly held $727,994.46 principal amount, $549,430.31 principal amount and $2,472,434.13 principal amount of the reported securities, respectively."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Corebridge Institutional Investments (U.S.), LLC, an indirect wholly owned subsidiary of CRBG, may have been deemed to have beneficial ownership of $1,744,439.63 principal amount of the reported securities held by a controlled subsidiary of American International Group, Inc. (\"AIG\") pursuant to an investment management agreement. CRBG disclaims beneficial ownership of the securities held by the controlled subsidiary of AIG, and this report shall not be deemed an admission that CRBG was the beneficial owner of such securities, except to the extent of CRBG's pecuniary interest therein."}],"source":{"system":"sec-edgar","filing":"0001104659-25-100406","document":"tm2528723-1_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/5108/000110465925100406/tm2528723-1_4seq1.xml","form_type":"4"}},{"id":1019062,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":74300,"kind":"person","name":"Agdern Robert D","position":1,"cik":"0001364241","reported_name":"Agdern Robert D","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-10-14T11:21:16.000Z","date":"2025-10-13","kind":"purchase","planned":false,"acquired":true,"shares":385,"price":42.11,"value":16212.35,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares purchased pursuant to the Fund's Rights Offering. Pursuant to the Rights Offering, the Fund was issued one transferable right (a 'Right) for each share of common stock of the Fund held by the Reporting Person.  Holders of Rights were entitled to purchase shares of common stock by submitting three Rights and the Subscription Price for each share of common stock purchased."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes shares acquired from merger of ClearBridge MLP and Midstream Total Return Fund Inc. into EMO.."}],"balance_after":1538,"source":{"system":"sec-edgar","filing":"0001364241-25-000004","document":"wk-form4_1760455273.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1364241/000136424125000004/wk-form4_1760455273.xml","form_type":"4"}},{"id":1112755,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":3379,"kind":"organization","name":"Corebridge Financial, Inc.","symbol":"CRBG","position":1,"cik":"0001889539","reported_name":"Corebridge Financial, Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}},{"id":28680,"kind":"organization","name":"AMERICAN GENERAL LIFE INSURANCE CO","position":2,"cik":"0000005108","reported_name":"AMERICAN GENERAL LIFE INSURANCE CO","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"3.46% Series M Senior Secured Notes due June 11, 2025","published_at":"2025-06-13T20:43:16.000Z","date":"2025-06-11","kind":"other","planned":false,"acquired":false,"shares":559610.2,"price":569291.46,"value":318581307788.892,"ownership":{"direct":false,"nature":"Held through subsidiaries"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The 3.46% Series M Senior Secured Notes were redeemed by the issuer for full payment at maturity of 100% of the aggregate principal amount outstanding of the securities, plus accrued and unpaid interest through the redemption date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"AGLIC and The Variable Annuity Life Insurance Company (\"VAL\"), an indirect wholly owned subsidiary of CRBG, directly held $373,073.46 principal amount and $186,536.74 principal amount of the reported securities, respectively."}],"source":{"system":"sec-edgar","filing":"0000950170-25-086302","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/5108/000095017025086302/ownership.xml","form_type":"4"}},{"id":1112754,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":3379,"kind":"organization","name":"Corebridge Financial, Inc.","symbol":"CRBG","position":1,"cik":"0001889539","reported_name":"Corebridge Financial, Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}},{"id":28680,"kind":"organization","name":"AMERICAN GENERAL LIFE INSURANCE CO","position":2,"cik":"0000005108","reported_name":"AMERICAN GENERAL LIFE INSURANCE CO","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"Series O Mandatory Redeemable Preferred Stock","published_at":"2025-06-13T20:43:16.000Z","date":"2025-06-11","kind":"other","planned":false,"acquired":false,"shares":125716,"price":35.04,"value":4405088.64,"ownership":{"direct":false,"nature":"Held through subsidiaries"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The Series O Mandatory Redeemable Preferred Stock were redeemed by the issuer at a price equal to the liquidation value of $35 per share plus accrued interest through the redemption date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"American General Life Insurance Company (\"AGLIC\") and The United States Life Insurance Company in the City of New York (\"USL\"), each an indirect wholly owned subsidiary of Corebridge Financial, Inc. (\"CRBG\"), directly held 2,858 shares and 82,858 shares of the reported securities, respectively. Corebridge Institutional Investments (U.S.), LLC (\"CIIUS\"), an indirect wholly owned subsidiary of CRBG, may have been  deemed to have beneficial ownership of 40,000 shares of the reported securities held by a controlled subsidiary of American International Group, Inc. (\"AIG\"), pursuant to an investment management agreement. CRBG disclaims beneficial ownership of the securities held by the controlled subsidiary of AIG, and this report shall not be deemed an admission that CRBG is the beneficial owner of such securities, except to the extent of CRBG's pecuniary interest therein."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000950170-25-086302","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/5108/000095017025086302/ownership.xml","form_type":"4"}},{"id":1132421,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":39441,"kind":"person","name":"GRILLO ANTHONY","position":1,"cik":"0001070847","reported_name":"GRILLO ANTHONY","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-05-28T21:05:28.000Z","date":"2025-05-27","kind":"purchase","planned":false,"acquired":true,"shares":250,"price":45.84,"value":11460.0,"ownership":{"direct":true},"balance_after":250,"source":{"system":"sec-edgar","filing":"0000914851-25-000103","document":"wk-form4_1748466321.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1070847/000091485125000103/wk-form4_1748466321.xml","form_type":"4"}},{"id":1187637,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":3379,"kind":"organization","name":"Corebridge Financial, Inc.","symbol":"CRBG","position":1,"cik":"0001889539","reported_name":"Corebridge Financial, Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}},{"id":28680,"kind":"organization","name":"AMERICAN GENERAL LIFE INSURANCE CO","position":2,"cik":"0000005108","reported_name":"AMERICAN GENERAL LIFE INSURANCE CO","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"Series P Mandatory Redeemable Preferred Stock","published_at":"2025-04-01T20:15:05.000Z","date":"2025-03-28","kind":"sale","planned":false,"acquired":false,"shares":74286,"price":33.69,"value":2502695.34,"ownership":{"direct":false,"nature":"Held through subsidiary"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents sales of reported securities by a controlled subsidiary of American International Group (\"AIG\"), which may have been deemed to be beneficially owned by Corebridge Institutional Investments (U.S.), LLC (\"CIIUS\"), an indirect wholly owned subsidiary of Corebridge Financial, Inc. (\"CRBG\"), pursuant to an investment management agreement."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Directly held by American General Life Insurance Company (\"AGLIC\"), an indirect wholly owned subsidiary of CRBG."}],"balance_after":160000,"source":{"system":"sec-edgar","filing":"0000950170-25-048525","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/5108/000095017025048525/ownership.xml","form_type":"4"}},{"id":1187636,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":3379,"kind":"organization","name":"Corebridge Financial, Inc.","symbol":"CRBG","position":1,"cik":"0001889539","reported_name":"Corebridge Financial, Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}},{"id":28680,"kind":"organization","name":"AMERICAN GENERAL LIFE INSURANCE CO","position":2,"cik":"0000005108","reported_name":"AMERICAN GENERAL LIFE INSURANCE CO","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"Series J Mandatory Redeemable Preferred Stock","published_at":"2025-04-01T20:15:05.000Z","date":"2025-03-28","kind":"sale","planned":false,"acquired":false,"shares":65715,"price":34.31,"value":2254681.65,"ownership":{"direct":false,"nature":"Held through subsidiary"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents sales of reported securities by a controlled subsidiary of American International Group (\"AIG\"), which may have been deemed to be beneficially owned by Corebridge Institutional Investments (U.S.), LLC (\"CIIUS\"), an indirect wholly owned subsidiary of Corebridge Financial, Inc. (\"CRBG\"), pursuant to an investment management agreement."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Directly held by American General Life Insurance Company (\"AGLIC\"), an indirect wholly owned subsidiary of CRBG."}],"balance_after":134286,"source":{"system":"sec-edgar","filing":"0000950170-25-048525","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/5108/000095017025048525/ownership.xml","form_type":"4"}},{"id":1221200,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":462,"kind":"organization","name":"FRANKLIN TEMPLETON INC","symbol":"BEN","position":1,"cik":"0000038777","reported_name":"FRANKLIN RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Affiliate of Investment Adv"}}],"security":"Common Stock","published_at":"2025-03-06T18:54:37.000Z","date":"2025-01-08","kind":"sale","planned":false,"acquired":false,"shares":9704,"price":47.0624,"value":456693.5296,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Franklin Resources, Inc. (FRI) previously owned shares of ClearBridge MLP and Midstream Total Return Fund Inc. (CTR). FRI acquired shares of ClearBridge Energy Midstream Opportunity Fund\nInc. (EMO) as a result of the merger of CTR with and into EMO on September 9, 2024"},{"field":"shares","element":"transactionShares","label":"F2","text":"This Form 4 reflects the correct amount of shares of EMO sold after filing an Amended Form 4 to correct the amount of shares sold on December 11, 2024."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This Form 4 reflects the correct amount of Securities Beneficially Owned Following this Transaction after filing an Amended Form 4 to correct the amount of shares sold on December 11, 2024 and the amount of Securities Beneficially Owned Following such Transaction."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F4","text":"See Exhibits 99-1 and 99-2 for text of footnote, which Exhibits are incorporated by reference herein."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000914851-25-000010","document":"wk-form4_1741287269.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/38777/000091485125000010/wk-form4_1741287269.xml","form_type":"4"}},{"id":1221198,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":462,"kind":"organization","name":"FRANKLIN TEMPLETON INC","symbol":"BEN","position":1,"cik":"0000038777","reported_name":"FRANKLIN RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Affiliate of Investment Adv"}}],"security":"Common Stock","published_at":"2025-03-06T18:21:10.000Z","date":"2024-12-11","kind":"sale","planned":false,"acquired":false,"shares":1200,"price":47.4517,"value":56942.04,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Franklin Resources, Inc. (FRI) previously owned shares of ClearBridge MLP and Midstream Total Return Fund Inc. (CTR). FRI acquired shares of ClearBridge Energy Midstream Opportunity Fund\nInc. (EMO) as a result of the merger of CTR with and into EMO on September 9, 2024"},{"field":"shares","element":"transactionShares","label":"F2","text":"This Form 4 is amended to reflect the correct amount of shares of EMO sold on December 11, 2024 and the correct amount of Securities Beneficially Owned Following the Transaction. .The amount of shares sold on December 11, 2024 was erroneously reported."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The Form 4 is amended to reflect the correct amount of shares of EMO sold on December 11, 2024 and the correct amount of Securities Beneficially Owned Following the Transaction . The amount of shares sold on December 11, 2024 was erroneously reported.  Consequently, the amount of Securities Beneficially Owned Following the Transaction which occurred on 12/11/24 was erroneously reported."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F4","text":"See Exhibits 99-1 and 99-2 for text of footnote, which Exhibits are incorporated by reference herein."}],"balance_after":31709,"source":{"system":"sec-edgar","filing":"0000914851-25-000008","document":"wk-form4a_1741285263.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/38777/000091485125000008/wk-form4a_1741285263.xml","form_type":"4/A","original_submission_date":"2024-12-13"}},{"id":1309451,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":462,"kind":"organization","name":"FRANKLIN TEMPLETON INC","symbol":"BEN","position":1,"cik":"0000038777","reported_name":"FRANKLIN RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Affiliate of Investment Adv"}}],"security":"Common Stock","published_at":"2025-01-08T00:33:36.000Z","date":"2025-01-03","kind":"sale","planned":false,"acquired":false,"shares":8772,"price":47,"value":412284.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Franklin Resources, Inc. (FRI) previously owned shares of ClearBridge MLP and Midstream Total Return Fund Inc. (CTR). FRI acquired shares of ClearBridge Energy Midstream Opportunity Fund\nInc. (EMO) as a result of the merger of CTR with and into EMO on September 9, 2024."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"See Exhibits 99-1 and 99-2 for text of footnote, which Exhibits are incorporated by reference herein."}],"balance_after":8204,"source":{"system":"sec-edgar","filing":"0000914851-25-000004","document":"wk-form4_1736296408.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/38777/000091485125000004/wk-form4_1736296408.xml","form_type":"4"}},{"id":1320189,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":462,"kind":"organization","name":"FRANKLIN TEMPLETON INC","symbol":"BEN","position":1,"cik":"0000038777","reported_name":"FRANKLIN RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Affiliate of Investment Adv"}}],"security":"Common Stock","published_at":"2024-12-31T15:40:38.000Z","date":"2024-12-27","kind":"sale","planned":false,"acquired":false,"shares":1124,"price":46.0257,"value":51732.8868,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Franklin Resources, Inc. (FRI) previously owned shares of ClearBridge MLP and Midstream Total Return Fund Inc. (CTR). FRI acquired shares of ClearBridge Energy Midstream Opportunity Fund\nInc. (EMO) as a result of the merger of CTR with and into EMO on September 9, 2024."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"See Exhibits 99-1 and 99-2 for text of footnote, which Exhibits are incorporated by reference herein."}],"balance_after":16976,"source":{"system":"sec-edgar","filing":"0000914851-24-000419","document":"wk-form4_1735659631.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/38777/000091485124000419/wk-form4_1735659631.xml","form_type":"4"}},{"id":1321336,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":462,"kind":"organization","name":"FRANKLIN TEMPLETON INC","symbol":"BEN","position":1,"cik":"0000038777","reported_name":"FRANKLIN RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Affiliate of Investment Adv"}}],"security":"Common Stock","published_at":"2024-12-27T16:17:36.000Z","date":"2024-12-24","kind":"sale","planned":false,"acquired":false,"shares":8153,"price":46.0133,"value":375146.4349,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Franklin Resources, Inc. (FRI) previously owned shares of ClearBridge MLP and Midstream Total Return Fund Inc. (CTR). FRI acquired shares of ClearBridge Energy Midstream Opportunity Fund\nInc. (EMO) as a result of the merger of CTR with and into EMO on September 9, 2024"},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"See Exhibits 99-1 and 99-2 for text of footnote, which Exhibits are incorporated by reference herein."}],"balance_after":18100,"source":{"system":"sec-edgar","filing":"0000914851-24-000417","document":"wk-form4_1735316248.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/38777/000091485124000417/wk-form4_1735316248.xml","form_type":"4"}},{"id":1325049,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":462,"kind":"organization","name":"FRANKLIN TEMPLETON INC","symbol":"BEN","position":1,"cik":"0000038777","reported_name":"FRANKLIN RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Affiliate of Investment Adv"}}],"security":"Common Stock","published_at":"2024-12-20T21:47:41.000Z","date":"2024-12-20","kind":"sale","planned":false,"acquired":false,"shares":1747,"price":45.0866,"value":78766.2902,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Franklin Resources, Inc. (FRI) previously owned shares of ClearBridge MLP and Midstream Total Return Fund Inc. (CTR). FRI acquired shares of ClearBridge Energy Midstream Opportunity Fund\nInc. (EMO) as a result of the merger of CTR with and into EMO on September 9, 2024."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"See Exhibits 99-1 and 99-2 for text of footnote, which Exhibits are incorporated by reference herein."}],"balance_after":26253,"source":{"system":"sec-edgar","filing":"0000914851-24-000415","document":"wk-form4_1734731255.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/38777/000091485124000415/wk-form4_1734731255.xml","form_type":"4"}},{"id":1327637,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":462,"kind":"organization","name":"FRANKLIN TEMPLETON INC","symbol":"BEN","position":1,"cik":"0000038777","reported_name":"FRANKLIN RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Affiliate of Investment Adv"}}],"security":"Common Stock","published_at":"2024-12-18T22:04:44.000Z","date":"2024-12-16","kind":"sale","planned":false,"acquired":false,"shares":2209,"price":46.042,"value":101706.778,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Franklin Resources, Inc. (FRI) previously owned shares of ClearBridge MLP and Midstream Total Return Fund Inc. (CTR). FRI acquired shares of ClearBridge Energy Midstream Opportunity Fund\nInc. (EMO) as a result of the merger of CTR with and into EMO on September 9, 2024."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"See Exhibits 99-1 and 99-2 for text of footnote, which Exhibits are incorporated by reference herein."}],"balance_after":28000,"source":{"system":"sec-edgar","filing":"0000914851-24-000413","document":"wk-form4_1734559477.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/38777/000091485124000413/wk-form4_1734559477.xml","form_type":"4"}},{"id":1333308,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":462,"kind":"organization","name":"FRANKLIN TEMPLETON INC","symbol":"BEN","position":1,"cik":"0000038777","reported_name":"FRANKLIN RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Affiliate of Investment Adv"}}],"security":"Common Stock","published_at":"2024-12-13T15:22:31.000Z","date":"2024-12-11","kind":"sale","planned":false,"acquired":false,"shares":2700,"price":47.4517,"value":128119.59,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Franklin Resources, Inc. (FRI) previously owned shares of ClearBridge MLP and Midstream Total Return Fund Inc. (CTR). FRI acquired shares of ClearBridge Energy Midstream Opportunity Fund\nInc. 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(\"CEM\"), CEM merged with and into the Issuer (the \"Merger\")."},{"field":"kind","element":"transactionCoding","label":"F2","text":"As a result of the Merger, among other things, (1) the Issuer issued and delivered to holders of the CEM's Mandatory Redeemable Preferred Stock (\"MRPS\") newly issued shares of the Issuer's MRPS with the same aggregate liquidation preference and other terms as the CEM MRPS that were issued and outstanding immediately prior to the Merger (other than voting rights, which correspond to every $35 of liquidation preference in the case of the newly issued MRPS), and the CEM MRPS ceased to be outstanding and were automatically canceled and (2) the Issuer expressly assumed the obligations of CEM, under, among other things, CEM's outstanding Senior Secured Notes (the \"Notes\") and, at the request of a holder of CEM's outstanding Notes, the Issuer issued replacement Notes with the same aggregate principal amount outstanding and terms as the CEM Notes. Any CEM Notes for which replacement Notes were issued ceased to be outstanding and were automatically canceled."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"In connection with the Merger, the Issuer cancelled and re-issued its MRPS that were issued and outstanding immediately prior to the Merger to align the voting rights of all of the Issuer's MRPS so that each MRPS holder will have one vote for every $35 of liquidation preference following the consummation of the Merger. As a result of the foregoing, AGLIC now directly holds 134,286 shares of the reported securities and CIIUS may be deemed to have beneficial ownership of 65,715 shares of the reported securities held by a controlled subsidiary of AIG pursuant to an investment management agreement. CRBG disclaims beneficial ownership of the securities held by the controlled subsidiary of AIG, and this report shall not be deemed an admission that CRBG is the beneficial owner of such securities, except to the extent of CRBG's pecuniary interest therein."}],"balance_after":200001,"source":{"system":"sec-edgar","filing":"0000950170-24-105499","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/5108/000095017024105499/ownership.xml","form_type":"4"}},{"id":1410547,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":3379,"kind":"organization","name":"Corebridge Financial, Inc.","symbol":"CRBG","position":1,"cik":"0001889539","reported_name":"Corebridge Financial, Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}},{"id":28680,"kind":"organization","name":"AMERICAN GENERAL LIFE INSURANCE CO","position":2,"cik":"0000005108","reported_name":"AMERICAN GENERAL LIFE INSURANCE CO","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}},{"id":87637,"kind":"organization","name":"VARIABLE ANNUITY LIFE INSURANCE CO /TX/","position":3,"cik":"0000910586","reported_name":"VARIABLE ANNUITY LIFE INSURANCE CO /TX/","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"Series J Mandatory Redeemable Preferred Stock","published_at":"2024-09-11T20:05:09.000Z","date":"2024-09-09","kind":"other","planned":false,"acquired":false,"shares":70,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Held through subsidiaries"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On September 9, 2024, pursuant to an Agreement and Plan of Merger, dated September 6, 2024, between the Issuer and ClearBridge MLP and Midstream Fund, Inc. (\"CEM\"), CEM merged with and into the Issuer (the \"Merger\")."},{"field":"kind","element":"transactionCoding","label":"F2","text":"As a result of the Merger, among other things, (1) the Issuer issued and delivered to holders of the CEM's Mandatory Redeemable Preferred Stock (\"MRPS\") newly issued shares of the Issuer's MRPS with the same aggregate liquidation preference and other terms as the CEM MRPS that were issued and outstanding immediately prior to the Merger (other than voting rights, which correspond to every $35 of liquidation preference in the case of the newly issued MRPS), and the CEM MRPS ceased to be outstanding and were automatically canceled and (2) the Issuer expressly assumed the obligations of CEM, under, among other things, CEM's outstanding Senior Secured Notes (the \"Notes\") and, at the request of a holder of CEM's outstanding Notes, the Issuer issued replacement Notes with the same aggregate principal amount outstanding and terms as the CEM Notes. Any CEM Notes for which replacement Notes were issued ceased to be outstanding and were automatically canceled."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"In connection with the Merger, the Issuer cancelled and re-issued its MRPS that were issued and outstanding immediately prior to the Merger to align the voting rights of all of the Issuer's MRPS so that each MRPS holder will have one vote for every $35 of liquidation preference following the consummation of the Merger. As a result of the foregoing, AGLIC now directly holds 134,286 shares of the reported securities and CIIUS may be deemed to have beneficial ownership of 65,715 shares of the reported securities held by a controlled subsidiary of AIG pursuant to an investment management agreement. CRBG disclaims beneficial ownership of the securities held by the controlled subsidiary of AIG, and this report shall not be deemed an admission that CRBG is the beneficial owner of such securities, except to the extent of CRBG's pecuniary interest therein."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000950170-24-105499","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/5108/000095017024105499/ownership.xml","form_type":"4"}},{"id":1410546,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":3379,"kind":"organization","name":"Corebridge Financial, Inc.","symbol":"CRBG","position":1,"cik":"0001889539","reported_name":"Corebridge Financial, Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}},{"id":28680,"kind":"organization","name":"AMERICAN GENERAL LIFE INSURANCE CO","position":2,"cik":"0000005108","reported_name":"AMERICAN GENERAL LIFE INSURANCE CO","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}},{"id":87637,"kind":"organization","name":"VARIABLE ANNUITY LIFE INSURANCE CO /TX/","position":3,"cik":"0000910586","reported_name":"VARIABLE ANNUITY LIFE INSURANCE CO /TX/","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"3.76% Series O Senior Secured Notes due June 11, 2030","published_at":"2024-09-11T20:05:09.000Z","date":"2024-09-09","kind":"other","planned":false,"acquired":true,"shares":2051904.07,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Held through subsidiaries"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On September 9, 2024, pursuant to an Agreement and Plan of Merger, dated September 6, 2024, between the Issuer and ClearBridge MLP and Midstream Fund, Inc. (\"CEM\"), CEM merged with and into the Issuer (the \"Merger\")."},{"field":"kind","element":"transactionCoding","label":"F2","text":"As a result of the Merger, among other things, (1) the Issuer issued and delivered to holders of the CEM's Mandatory Redeemable Preferred Stock (\"MRPS\") newly issued shares of the Issuer's MRPS with the same aggregate liquidation preference and other terms as the CEM MRPS that were issued and outstanding immediately prior to the Merger (other than voting rights, which correspond to every $35 of liquidation preference in the case of the newly issued MRPS), and the CEM MRPS ceased to be outstanding and were automatically canceled and (2) the Issuer expressly assumed the obligations of CEM, under, among other things, CEM's outstanding Senior Secured Notes (the \"Notes\") and, at the request of a holder of CEM's outstanding Notes, the Issuer issued replacement Notes with the same aggregate principal amount outstanding and terms as the CEM Notes. Any CEM Notes for which replacement Notes were issued ceased to be outstanding and were automatically canceled."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"AGLIC and USL directly hold $1,380,371.82 principal amount and $671,532.25 principal amount of the reported securities, respectively."}],"source":{"system":"sec-edgar","filing":"0000950170-24-105499","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/5108/000095017024105499/ownership.xml","form_type":"4"}},{"id":1410545,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":3379,"kind":"organization","name":"Corebridge Financial, Inc.","symbol":"CRBG","position":1,"cik":"0001889539","reported_name":"Corebridge Financial, Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}},{"id":28680,"kind":"organization","name":"AMERICAN GENERAL LIFE INSURANCE CO","position":2,"cik":"0000005108","reported_name":"AMERICAN GENERAL LIFE INSURANCE CO","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}},{"id":87637,"kind":"organization","name":"VARIABLE ANNUITY LIFE INSURANCE CO /TX/","position":3,"cik":"0000910586","reported_name":"VARIABLE ANNUITY LIFE INSURANCE CO /TX/","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"3.56% Series N Senior Secured Notes due June 11, 2027","published_at":"2024-09-11T20:05:09.000Z","date":"2024-09-09","kind":"other","planned":false,"acquired":true,"shares":1492293.86,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Held through subsidiaries"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On September 9, 2024, pursuant to an Agreement and Plan of Merger, dated September 6, 2024, between the Issuer and ClearBridge MLP and Midstream Fund, Inc. (\"CEM\"), CEM merged with and into the Issuer (the \"Merger\")."},{"field":"kind","element":"transactionCoding","label":"F2","text":"As a result of the Merger, among other things, (1) the Issuer issued and delivered to holders of the CEM's Mandatory Redeemable Preferred Stock (\"MRPS\") newly issued shares of the Issuer's MRPS with the same aggregate liquidation preference and other terms as the CEM MRPS that were issued and outstanding immediately prior to the Merger (other than voting rights, which correspond to every $35 of liquidation preference in the case of the newly issued MRPS), and the CEM MRPS ceased to be outstanding and were automatically canceled and (2) the Issuer expressly assumed the obligations of CEM, under, among other things, CEM's outstanding Senior Secured Notes (the \"Notes\") and, at the request of a holder of CEM's outstanding Notes, the Issuer issued replacement Notes with the same aggregate principal amount outstanding and terms as the CEM Notes. Any CEM Notes for which replacement Notes were issued ceased to be outstanding and were automatically canceled."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"AGLIC directly holds $1,492,293.86 principal amount of the reported securities."}],"source":{"system":"sec-edgar","filing":"0000950170-24-105499","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/5108/000095017024105499/ownership.xml","form_type":"4"}},{"id":1410544,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":3379,"kind":"organization","name":"Corebridge Financial, Inc.","symbol":"CRBG","position":1,"cik":"0001889539","reported_name":"Corebridge Financial, Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}},{"id":28680,"kind":"organization","name":"AMERICAN GENERAL LIFE INSURANCE CO","position":2,"cik":"0000005108","reported_name":"AMERICAN GENERAL LIFE INSURANCE CO","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}},{"id":87637,"kind":"organization","name":"VARIABLE ANNUITY LIFE INSURANCE CO /TX/","position":3,"cik":"0000910586","reported_name":"VARIABLE ANNUITY LIFE INSURANCE CO /TX/","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"3.46% Series M Senior Secured Notes due June 11, 2025","published_at":"2024-09-11T20:05:09.000Z","date":"2024-09-09","kind":"other","planned":false,"acquired":true,"shares":559610.2,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Held through subsidiaries"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On September 9, 2024, pursuant to an Agreement and Plan of Merger, dated September 6, 2024, between the Issuer and ClearBridge MLP and Midstream Fund, Inc. (\"CEM\"), CEM merged with and into the Issuer (the \"Merger\")."},{"field":"kind","element":"transactionCoding","label":"F2","text":"As a result of the Merger, among other things, (1) the Issuer issued and delivered to holders of the CEM's Mandatory Redeemable Preferred Stock (\"MRPS\") newly issued shares of the Issuer's MRPS with the same aggregate liquidation preference and other terms as the CEM MRPS that were issued and outstanding immediately prior to the Merger (other than voting rights, which correspond to every $35 of liquidation preference in the case of the newly issued MRPS), and the CEM MRPS ceased to be outstanding and were automatically canceled and (2) the Issuer expressly assumed the obligations of CEM, under, among other things, CEM's outstanding Senior Secured Notes (the \"Notes\") and, at the request of a holder of CEM's outstanding Notes, the Issuer issued replacement Notes with the same aggregate principal amount outstanding and terms as the CEM Notes. Any CEM Notes for which replacement Notes were issued ceased to be outstanding and were automatically canceled."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"AGLIC and The Variable Annuity Life Insurance Company (\"VAL\"), an indirect wholly owned subsidiary of CRBG, directly hold $373,073.46 principal amount and $186,536.74 principal amount of the reported securities, respectively."}],"source":{"system":"sec-edgar","filing":"0000950170-24-105499","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/5108/000095017024105499/ownership.xml","form_type":"4"}},{"id":1410543,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":3379,"kind":"organization","name":"Corebridge Financial, Inc.","symbol":"CRBG","position":1,"cik":"0001889539","reported_name":"Corebridge Financial, Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}},{"id":28680,"kind":"organization","name":"AMERICAN GENERAL LIFE INSURANCE CO","position":2,"cik":"0000005108","reported_name":"AMERICAN GENERAL LIFE INSURANCE CO","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}},{"id":87637,"kind":"organization","name":"VARIABLE ANNUITY LIFE INSURANCE CO /TX/","position":3,"cik":"0000910586","reported_name":"VARIABLE ANNUITY LIFE INSURANCE CO /TX/","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"Series P Mandatory Redeemable Preferred Stock","published_at":"2024-09-11T20:05:09.000Z","date":"2024-09-09","kind":"other","planned":false,"acquired":true,"shares":234286,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Held through subsidiaries"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On September 9, 2024, pursuant to an Agreement and Plan of Merger, dated September 6, 2024, between the Issuer and ClearBridge MLP and Midstream Fund, Inc. (\"CEM\"), CEM merged with and into the Issuer (the \"Merger\")."},{"field":"kind","element":"transactionCoding","label":"F2","text":"As a result of the Merger, among other things, (1) the Issuer issued and delivered to holders of the CEM's Mandatory Redeemable Preferred Stock (\"MRPS\") newly issued shares of the Issuer's MRPS with the same aggregate liquidation preference and other terms as the CEM MRPS that were issued and outstanding immediately prior to the Merger (other than voting rights, which correspond to every $35 of liquidation preference in the case of the newly issued MRPS), and the CEM MRPS ceased to be outstanding and were automatically canceled and (2) the Issuer expressly assumed the obligations of CEM, under, among other things, CEM's outstanding Senior Secured Notes (the \"Notes\") and, at the request of a holder of CEM's outstanding Notes, the Issuer issued replacement Notes with the same aggregate principal amount outstanding and terms as the CEM Notes. Any CEM Notes for which replacement Notes were issued ceased to be outstanding and were automatically canceled."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"AGLIC directly holds 160,000 shares of the reported securities. CIIUS may be been deemed to have beneficial ownership of 74,286 shares of the reported securities held by a controlled subsidiary of AIG, pursuant to an investment management agreement. CRBG disclaims beneficial ownership of the securities held by the controlled subsidiary of AIG, and this report shall not be deemed an admission that CRBG is the beneficial owner of such securities, except to the extent of CRBG's pecuniary interest therein."}],"balance_after":234286,"source":{"system":"sec-edgar","filing":"0000950170-24-105499","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/5108/000095017024105499/ownership.xml","form_type":"4"}},{"id":1410542,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":3379,"kind":"organization","name":"Corebridge Financial, Inc.","symbol":"CRBG","position":1,"cik":"0001889539","reported_name":"Corebridge Financial, Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}},{"id":28680,"kind":"organization","name":"AMERICAN GENERAL LIFE INSURANCE CO","position":2,"cik":"0000005108","reported_name":"AMERICAN GENERAL LIFE INSURANCE CO","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}},{"id":87637,"kind":"organization","name":"VARIABLE ANNUITY LIFE INSURANCE CO /TX/","position":3,"cik":"0000910586","reported_name":"VARIABLE ANNUITY LIFE INSURANCE CO /TX/","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"Series O Mandatory Redeemable Preferred Stock","published_at":"2024-09-11T20:05:09.000Z","date":"2024-09-09","kind":"other","planned":false,"acquired":true,"shares":125716,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Held through subsidiaries"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On September 9, 2024, pursuant to an Agreement and Plan of Merger, dated September 6, 2024, between the Issuer and ClearBridge MLP and Midstream Fund, Inc. (\"CEM\"), CEM merged with and into the Issuer (the \"Merger\")."},{"field":"kind","element":"transactionCoding","label":"F2","text":"As a result of the Merger, among other things, (1) the Issuer issued and delivered to holders of the CEM's Mandatory Redeemable Preferred Stock (\"MRPS\") newly issued shares of the Issuer's MRPS with the same aggregate liquidation preference and other terms as the CEM MRPS that were issued and outstanding immediately prior to the Merger (other than voting rights, which correspond to every $35 of liquidation preference in the case of the newly issued MRPS), and the CEM MRPS ceased to be outstanding and were automatically canceled and (2) the Issuer expressly assumed the obligations of CEM, under, among other things, CEM's outstanding Senior Secured Notes (the \"Notes\") and, at the request of a holder of CEM's outstanding Notes, the Issuer issued replacement Notes with the same aggregate principal amount outstanding and terms as the CEM Notes. Any CEM Notes for which replacement Notes were issued ceased to be outstanding and were automatically canceled."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"American General Life Insurance Company (\"AGLIC\") and The United States Life Insurance Company in the City of New York (\"USL\"), each an indirect wholly owned subsidiary of Corebridge Financial, Inc. (\"CRBG\"), directly hold 2,858 shares and 82,858 shares of the reported securities, respectively. Corebridge Institutional Investments, (U.S.), LLC (\"CIIUS\"), an indirect wholly owned subsidiary of CRBG, may be deemed to have beneficial ownership of 40,000 shares of the reported securities held by a controlled subsidiary of American International Group, Inc. (\"AIG\"), pursuant to an investment management agreement. CRBG disclaims beneficial ownership of the securities held by the controlled subsidiary of AIG, and this report shall not be deemed an admission that CRBG is the beneficial owner of such securities, except to the extent of CRBG's pecuniary interest therein."}],"balance_after":125716,"source":{"system":"sec-edgar","filing":"0000950170-24-105499","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/5108/000095017024105499/ownership.xml","form_type":"4"}},{"id":1448598,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":3379,"kind":"organization","name":"Corebridge Financial, Inc.","symbol":"CRBG","position":1,"cik":"0001889539","reported_name":"Corebridge Financial, Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"Series I Mandatory Redeemable Preferred Stock","published_at":"2024-07-25T12:00:06.000Z","date":"2024-07-23","kind":"other","planned":false,"acquired":false,"shares":30,"price":100825.44,"value":3024763.2,"ownership":{"direct":false,"nature":"Held through subsidiaries"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The Series I Mandatory Redeemable Preferred Stock (the \"Series I MRPS\") were redeemed by the issuer at a price equal to the liquidation value of $100,000 of the redeemed securities plus accrued interest of $825.44 per share (the \"Series I Redemption\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The United States Life Insurance Company in The City of New York (\"USL\"), an indirect wholly owned subsidiary of Corebridge Financial, Inc. (\"CRBG\"), directly held 20 shares of the Issuer's Series I MRPS. Corebridge Institutional Investments (U.S.), LLC (\"CIIUS\"), an indirect wholly owned subsidiary of CRBG, was deemed to have beneficial ownership of 10 shares of the Issuer's Series I MRPS held by a controlled subsidiary of American International Group (\"AIG\") pursuant to an investment management agreement. CRBG was an indirect beneficial owner of the Series I MRPS."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000950170-24-086311","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1517518/000095017024086311/ownership.xml","form_type":"4"}},{"id":1469472,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":1327,"kind":"organization","name":"Saba Capital Management, L.P.","position":1,"cik":"0001510281","reported_name":"Saba Capital Management, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":75504,"kind":"person","name":"Weinstein Boaz","position":2,"cik":"0001608233","reported_name":"Weinstein Boaz","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2024-06-25T18:35:39.000Z","date":"2024-06-21","kind":"other","planned":false,"acquired":false,"shares":2648311,"price":44.45,"value":117717423.95,"ownership":{"direct":false,"nature":"-"},"balance_after":358806,"source":{"system":"sec-edgar","filing":"0001510281-24-000336","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1510281/000151028124000336/primary_doc.xml","form_type":"4"}},{"id":1484328,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":3083,"kind":"organization","name":"AMERICAN INTERNATIONAL GROUP, INC.","symbol":"AIG","position":1,"cik":"0000005272","reported_name":"AMERICAN INTERNATIONAL GROUP, INC.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"Series J Mandatory Redeemable Preferred Stock","published_at":"2024-06-11T20:47:18.000Z","date":"2024-06-09","kind":"other","planned":false,"acquired":false,"shares":47,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Held through subsidiaries"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"As of June 9, 2024, Corebridge Financial, Inc. (\"CRBG\") ceased to be a controlled subsidiary of American International Group, Inc. (\"AIG\"). As a result of and following such event, AIG and CRBG report beneficial ownership independently and AIG no longer reports beneficial ownership of securities held directly by CRBG and its subsidiaries."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Lexington directly holds 23 shares of the reported securities."}],"balance_after":23,"source":{"system":"sec-edgar","filing":"0000950170-24-071995","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/5272/000095017024071995/ownership.xml","form_type":"4"}},{"id":1484327,"issuer":{"id":8990,"kind":"organization","name":"ClearBridge Energy Midstream Opportunity Fund Inc.","symbol":"EMO"},"owners":[{"id":3083,"kind":"organization","name":"AMERICAN INTERNATIONAL GROUP, INC.","symbol":"AIG","position":1,"cik":"0000005272","reported_name":"AMERICAN INTERNATIONAL GROUP, INC.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"Series I Mandatory Redeemable Preferred Stock","published_at":"2024-06-11T20:47:18.000Z","date":"2024-06-09","kind":"other","planned":false,"acquired":false,"shares":20,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Held through subsidiaries"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"As of June 9, 2024, Corebridge Financial, Inc. (\"CRBG\") ceased to be a controlled subsidiary of American International Group, Inc. (\"AIG\"). 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