# EDGAR Filing Document

**Accession Number:** 0001517518
**File Stem:** 0000940400-26-014739
**Filing Date:** 2026-4
**Character Count:** 27608
**Document Hash:** 1ec88f004a2ce9d8fb2a4b141bfccd91
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000940400-26-014739.hdr.sgml**: 20260424

**ACCESSION NUMBER**: 0000940400-26-014739

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260227

**FILED AS OF DATE**: 20260424

**DATE AS OF CHANGE**: 20260424

**PERIOD START**: 20261130

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ClearBridge Energy Midstream Opportunity Fund Inc.
- **CENTRAL INDEX KEY:** 0001517518

**ORGANIZATION NAME:**
- **EIN:** 451474578
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 1130

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-22546
- **FILM NUMBER:** 26893167

**BUSINESS ADDRESS:**
- **STREET 1:** 620 EIGHTH AVENUE
- **STREET 2:** 47TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10018
- **BUSINESS PHONE:** 888-777-0102

**MAIL ADDRESS:**
- **STREET 1:** 620 EIGHTH AVENUE
- **STREET 2:** 47TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10018

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ClearBridge Energy MLP Opportunity Fund Inc.
- **DATE OF NAME CHANGE:** 20110406

## Nport-Ex

Schedule of Investments (unaudited)

February 28, 2026

***If you need assistance accessing this content, please reach out to your sales representative or send an email to*** <u>accessibility@franklintempleton.com.</u>

 **ClearBridge Energy Midstream Opportunity Fund Inc.**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br>(Percentages shown based on Fund net assets)

---

| | | | |
|:---|:---|:---|:---|
| Security |  | Shares | Value |
| **Common Stocks — 67.7%** | **Common Stocks — 67.7%** | **Common Stocks — 67.7%** | **Common Stocks — 67.7%** |
| **Energy — 67.7%** | **Energy — 67.7%** | **Energy — 67.7%** | **Energy — 67.7%** |
| *Oil, Gas & Consumable Fuels — 67.7%* | *Oil, Gas & Consumable Fuels — 67.7%* | *Oil, Gas & Consumable Fuels — 67.7%* | *Oil, Gas & Consumable Fuels — 67.7%* |
| &nbsp;&nbsp;&nbsp; Antero Midstream Corp. | &nbsp;&nbsp;&nbsp; Antero Midstream Corp. | &nbsp;&nbsp; 3305098 | &nbsp;&nbsp;&nbsp; $74298603<br>|
| &nbsp;&nbsp;&nbsp; DT Midstream Inc. | &nbsp;&nbsp;&nbsp; DT Midstream Inc. | &nbsp;&nbsp; 195705 | &nbsp;&nbsp;&nbsp; 27171682<br>|
| &nbsp;&nbsp;&nbsp; Enbridge Inc. | &nbsp;&nbsp;&nbsp; Enbridge Inc. | &nbsp;&nbsp; 1444796 | &nbsp;&nbsp;&nbsp; 76776459<br>|
| &nbsp;&nbsp;&nbsp; Kinder Morgan Inc. | &nbsp;&nbsp;&nbsp; Kinder Morgan Inc. | &nbsp;&nbsp; 3042756 | &nbsp;&nbsp;&nbsp; 101232492<br>|
| &nbsp;&nbsp;&nbsp; ONEOK Inc. | &nbsp;&nbsp;&nbsp; ONEOK Inc. | &nbsp;&nbsp; 1173728 | &nbsp;&nbsp;&nbsp; 97149467<br>|
| &nbsp;&nbsp;&nbsp; Sunococorp LLC | &nbsp;&nbsp;&nbsp; Sunococorp LLC | &nbsp;&nbsp; 460000 | &nbsp;&nbsp;&nbsp; 27549400<br>|
| &nbsp;&nbsp;&nbsp; Targa Resources Corp. | &nbsp;&nbsp;&nbsp; Targa Resources Corp. | &nbsp;&nbsp; 710170 | &nbsp;&nbsp;&nbsp; 167458086<br>|
| &nbsp;&nbsp;&nbsp; TC Energy Corp. | &nbsp;&nbsp;&nbsp; TC Energy Corp. | &nbsp;&nbsp; 1075172 | &nbsp;&nbsp;&nbsp; 69208822<br>|
| &nbsp;&nbsp;&nbsp; Williams Cos. Inc. | &nbsp;&nbsp;&nbsp; Williams Cos. Inc. | &nbsp;&nbsp; 1678726 | &nbsp;&nbsp;&nbsp; 125434406<br>|
| **Total Common Stocks (Cost — $500,144,526)** | **Total Common Stocks (Cost — $500,144,526)** | **Total Common Stocks (Cost — $500,144,526)** | &nbsp;&nbsp; **766279417** |
|  |  | Shares/Units |  |
| **Master Limited Partnerships — 62.5%** | **Master Limited Partnerships — 62.5%** | **Master Limited Partnerships — 62.5%** | **Master Limited Partnerships — 62.5%** |
| *Diversified Energy Infrastructure — 34.2%* | *Diversified Energy Infrastructure — 34.2%* | *Diversified Energy Infrastructure — 34.2%* | *Diversified Energy Infrastructure — 34.2%* |
| &nbsp;&nbsp;&nbsp; Energy Transfer LP | &nbsp;&nbsp;&nbsp; Energy Transfer LP | &nbsp;&nbsp; 7066316 | &nbsp;&nbsp;&nbsp; 133129393<br>|
| &nbsp;&nbsp;&nbsp; Enterprise Products Partners LP | &nbsp;&nbsp;&nbsp; Enterprise Products Partners LP | &nbsp;&nbsp; 2378260 | &nbsp;&nbsp;&nbsp; 85950316<br>|
| &nbsp;&nbsp;&nbsp; Genesis Energy LP | &nbsp;&nbsp;&nbsp; Genesis Energy LP | &nbsp;&nbsp; 2897883 | &nbsp;&nbsp;&nbsp; 52335767<br>|
| &nbsp;&nbsp;&nbsp; Plains All American Pipeline LP | &nbsp;&nbsp;&nbsp; Plains All American Pipeline LP | &nbsp;&nbsp; 2670671 | &nbsp;&nbsp;&nbsp; 55843731<br>|
| &nbsp;&nbsp;&nbsp; Plains GP Holdings LP, Class A Shares | &nbsp;&nbsp;&nbsp; Plains GP Holdings LP, Class A Shares | &nbsp;&nbsp; 2614816 | &nbsp;&nbsp;&nbsp; 58,937,953<br> \*<br>|
| *Total Diversified Energy Infrastructure* | *Total Diversified Energy Infrastructure* | *Total Diversified Energy Infrastructure* | &nbsp;&nbsp; *386197160* |
| *Gathering/Processing — 13.6%* | *Gathering/Processing — 13.6%* | *Gathering/Processing — 13.6%* | *Gathering/Processing — 13.6%* |
| &nbsp;&nbsp;&nbsp; Hess Midstream LP, Class A Shares | &nbsp;&nbsp;&nbsp; Hess Midstream LP, Class A Shares | &nbsp;&nbsp; 1465985 | &nbsp;&nbsp;&nbsp; 56704300<br>|
| &nbsp;&nbsp;&nbsp; Western Midstream Partners LP | &nbsp;&nbsp;&nbsp; Western Midstream Partners LP | &nbsp;&nbsp; 2332943 | &nbsp;&nbsp;&nbsp; 97027099<br>|
| *Total Gathering/Processing* | *Total Gathering/Processing* | *Total Gathering/Processing* | &nbsp;&nbsp; *153731399* |
| *Liquids Transportation & Storage — 1.3%* | *Liquids Transportation & Storage — 1.3%* | *Liquids Transportation & Storage — 1.3%* | *Liquids Transportation & Storage — 1.3%* |
| &nbsp;&nbsp;&nbsp; Delek Logistics Partners LP | &nbsp;&nbsp;&nbsp; Delek Logistics Partners LP | &nbsp;&nbsp; 279818 | &nbsp;&nbsp;&nbsp; *14530949*<br>|
| *Natural Gas Transportation & Storage — 3.3%* | *Natural Gas Transportation & Storage — 3.3%* | *Natural Gas Transportation & Storage — 3.3%* | *Natural Gas Transportation & Storage — 3.3%* |
| &nbsp;&nbsp;&nbsp; Cheniere Energy Partners LP | &nbsp;&nbsp;&nbsp; Cheniere Energy Partners LP | &nbsp;&nbsp; 611873 | &nbsp;&nbsp;&nbsp; *37507815*<br>|
| *Oil/Refined Products — 10.1%* | *Oil/Refined Products — 10.1%* | *Oil/Refined Products — 10.1%* | *Oil/Refined Products — 10.1%* |
| &nbsp;&nbsp;&nbsp; MPLX LP | &nbsp;&nbsp;&nbsp; MPLX LP | &nbsp;&nbsp; 1946431 | &nbsp;&nbsp;&nbsp; *114722643*<br>|
| **Total Master Limited Partnerships (Cost — $522,498,988)** | **Total Master Limited Partnerships (Cost — $522,498,988)** | **Total Master Limited Partnerships (Cost — $522,498,988)** | &nbsp;&nbsp; **706689966** |
| **Total Investments before Short-Term Investments (Cost — $1,022,643,514)** | **Total Investments before Short-Term Investments (Cost — $1,022,643,514)** | **Total Investments before Short-Term Investments (Cost — $1,022,643,514)** | &nbsp;&nbsp; **1472969383** |
|  | Rate | Shares |  |
| **Short-Term Investments — 2.9%** | **Short-Term Investments — 2.9%** | **Short-Term Investments — 2.9%** | **Short-Term Investments — 2.9%** |
| &nbsp;&nbsp;&nbsp; JPMorgan 100% U.S. Treasury Securities Money Market Fund, <br> Institutional Class (Cost — $32,988,795)<br>| &nbsp;&nbsp; 3.503% | &nbsp;&nbsp; 32988795 | &nbsp;&nbsp;&nbsp; **32988795**<br> <sup>(a)</sup><br>|
| **Total Investments\*\* — 133.1% (Cost — $1,055,632,309)** | **Total Investments\*\* — 133.1% (Cost — $1,055,632,309)** | **Total Investments\*\* — 133.1% (Cost — $1,055,632,309)** | &nbsp;&nbsp; **1505958178** |
| &nbsp;&nbsp;&nbsp; Mandatory Redeemable Preferred Stock, at Liquidation Value — (6.0)% | &nbsp;&nbsp;&nbsp; Mandatory Redeemable Preferred Stock, at Liquidation Value — (6.0)% | &nbsp;&nbsp;&nbsp; Mandatory Redeemable Preferred Stock, at Liquidation Value — (6.0)% | &nbsp;&nbsp;&nbsp; (68200265)<br>|
| &nbsp;&nbsp;&nbsp; Other Liabilities in Excess of Other Assets — (27.1)% | &nbsp;&nbsp;&nbsp; Other Liabilities in Excess of Other Assets — (27.1)% | &nbsp;&nbsp;&nbsp; Other Liabilities in Excess of Other Assets — (27.1)% | &nbsp;&nbsp;&nbsp; (306849447)<br>|
| **Total Net Assets Applicable to Common Shareholders — 100.0%** | **Total Net Assets Applicable to Common Shareholders — 100.0%** | **Total Net Assets Applicable to Common Shareholders — 100.0%** | &nbsp;&nbsp; **$1130908466** |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

\* Non-income producing security.

\*\* The entire portfolio is subject to a lien, granted to the lender and Senior Note holders, to the extent of the borrowings outstanding and any additional expenses. 

<sup>(a)</sup> Rate shown is one-day yield as of the end of the reporting period. 

See Notes to Schedule of Investments.

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ClearBridge Energy Midstream Opportunity Fund Inc. 2026 Quarterly Report

------

Schedule of Investments (unaudited) (cont'd)

February 28, 2026

 **ClearBridge Energy Midstream Opportunity Fund Inc.**

This Schedule of Investments is unaudited and is intended to provide information about the Fund's investments as of the date of the schedule. Other information regarding the Fund is available in the Fund's most recent annual or semi-annual shareholder report.

See Notes to Schedule of Investments.

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ClearBridge Energy Midstream Opportunity Fund Inc. 2026 Quarterly Report

------

Notes to Schedule of Investments (unaudited)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

**1. Organization and significant accounting policies** 

ClearBridge Energy Midstream Opportunity Fund Inc. (the "Fund") was incorporated in Maryland on April 5, 2011, and is registered as a non-diversified, closed-end management investment company under the Investment Company Act of 1940, as amended (the "1940 Act"). The Board of Directors (the "Board") authorized 98,051,421 shares of $0.001 par value common stock. The Fund's investment objective is to provide long-term investors a high level of total return with an emphasis on cash distributions. There can be no assurance that the Fund will achieve its investment objective.

The Fund seeks to achieve its objective by investing primarily in energy midstream entities. Under normal market conditions, the Fund invests at least 80% of its Managed Assets in energy midstream entities including entities structured as both partnerships and corporations (the 80% policy). For purposes of the 80% policy, the Fund considers investments in midstream entities as those entities that provide midstream services including the gathering, transporting, processing, fractionation, storing, refining, and distribution of oil, natural gas liquids and natural gas. The Fund considers an entity to be within the energy sector if it derives at least 50% of its revenues from the business of exploring, developing, producing, gathering, transporting, processing, fractionating, storing, refining, distributing, mining or marketing natural gas, natural gas liquids (including propane), crude oil, refined petroleum products or coal. "Managed Assets" means net assets plus the amount of borrowings and assets attributable to any preferred stock of the Fund that may be outstanding.

The Fund follows the accounting and reporting guidance in Financial Accounting Standards Board ("FASB") Accounting Standards Codification Topic 946, *Financial Services – Investment Companies* ("ASC 946"). The following are significant accounting policies consistently followed by the Fund and are in conformity with U.S. generally accepted accounting principles ("GAAP"), including, but not limited to, ASC 946.

**(a) Investment valuation.** Equity securities for which market quotations are available are valued at the last reported sales price or official closing price on the primary market or exchange on which they trade. The valuations for fixed income securities (which may include, but are not limited to, corporate, government, municipal, mortgage-backed, collateralized mortgage obligations and asset-backed securities) and certain derivative instruments are typically the prices supplied by independent third party pricing services, which may use market prices or broker/dealer quotations or a variety of valuation techniques and methodologies. The independent third party pricing services typically use inputs that are observable such as issuer details, interest rates, yield curves, prepayment speeds, credit risks/spreads, default rates and quoted prices for similar securities. Investments in open-end funds are valued at the closing net asset value per share of each fund on the day of valuation. When the Fund holds securities or other assets that are denominated in a foreign currency, the Fund will normally use the currency exchange rates as of 4:00 p.m. (Eastern Time). If independent third party pricing services are unable to supply prices for a portfolio investment, or if the prices supplied are deemed by the manager to be unreliable, the market price may be determined by the manager using quotations from one or more broker/dealers or at the transaction price if the security has recently been purchased and no value has yet been obtained from a pricing service or pricing broker. When reliable prices are not readily available, such as when the value of a security has been significantly affected by events after the close of the exchange or market on which the security is principally traded, but before the Fund calculates its net asset value, the Fund values these securities as determined in accordance with procedures approved by the Board.

Pursuant to policies adopted by the Board, the Fund's manager has been designated as the valuation designee and is responsible for the oversight of the daily valuation process. The Fund's manager is assisted by the Global Fund Valuation Committee (the "Valuation Committee"). The Valuation Committee is responsible for making fair value determinations, evaluating the effectiveness of the Fund's pricing policies, and reporting to the Fund's manager and the Board. When determining the reliability of third party pricing information for investments owned by the Fund, the Valuation Committee, among other things, conducts due diligence reviews of pricing vendors, monitors the daily change in prices and reviews transactions among market participants.

The Valuation Committee will consider pricing methodologies it deems relevant and appropriate when making fair value determinations. Examples of possible methodologies include, but are not limited to, multiple of earnings; discount from market of a similar freely traded security; discounted cash-flow analysis; book value or a multiple thereof; risk premium/yield analysis; yield to maturity; and/or fundamental investment analysis. The Valuation Committee will also consider factors it deems relevant and appropriate in light of the facts and circumstances. Examples of possible factors include, but are not limited to, the type of security; the issuer's financial statements; the purchase price of the security; the discount from market value of unrestricted securities of the same class at the time of purchase; analysts' research and observations from financial institutions; information regarding any transactions or offers with respect to the security; the existence of merger proposals or tender offers affecting the security; the price and extent of public trading in similar securities of the issuer or comparable companies; and the existence of a shelf registration for restricted securities.

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ClearBridge Energy Midstream Opportunity Fund Inc. 2026 Quarterly Report

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Notes to Schedule of Investments (unaudited) (cont'd)

For each portfolio security that has been fair valued pursuant to the policies adopted by the Board, the fair value price is compared against the last available and next available market quotations. The Valuation Committee reviews the results of such back testing monthly and fair valuation occurrences are reported to the Board quarterly.

The Fund uses valuation techniques to measure fair value that are consistent with the market approach and/or income approach, depending on the type of security and the particular circumstance. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable securities. The income approach uses valuation techniques to discount estimated future cash flows to present value.

GAAP establishes a disclosure hierarchy that categorizes the inputs to valuation techniques used to value assets and liabilities at measurement date. These inputs are summarized in the three broad levels listed below:

• Level 1 — unadjusted quoted prices in active markets for identical investments

• Level 2 — other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

• Level 3 — significant unobservable inputs (including the Fund's own assumptions in determining the fair value of investments)

The inputs or methodologies used to value securities are not necessarily an indication of the risk associated with investing in those securities.

The following is a summary of the inputs used in valuing the Fund's assets carried at fair value: <br>

---

| | | | | |
|:---|:---|:---|:---|:---|
| **ASSETS** | **ASSETS** | **ASSETS** | **ASSETS** | **ASSETS** |
| Description | &nbsp;&nbsp; Quoted Prices <br>(Level 1)<br>| &nbsp;&nbsp; Other Significant <br>Observable Inputs <br>(Level 2)<br>| &nbsp;&nbsp; Significant <br>Unobservable <br>Inputs <br>(Level 3)<br>| Total |
| Long-Term Investments†: |  |  |  |  |
| &nbsp;&nbsp;&nbsp; Common Stocks | &nbsp;&nbsp; $766279417 | &nbsp;&nbsp; — | &nbsp;&nbsp; — | &nbsp;&nbsp; $766279417 |
| &nbsp;&nbsp;&nbsp; Master Limited Partnerships | &nbsp;&nbsp; 706689966 | &nbsp;&nbsp; — | &nbsp;&nbsp; — | &nbsp;&nbsp; 706689966 |
| Total Long-Term Investments | &nbsp;&nbsp; 1472969383 | &nbsp;&nbsp; — | &nbsp;&nbsp; — | &nbsp;&nbsp; 1472969383 |
| Short-Term Investments† | &nbsp;&nbsp; 32988795 | &nbsp;&nbsp; — | &nbsp;&nbsp; — | &nbsp;&nbsp; 32988795 |
| **Total Investments** | &nbsp;&nbsp; **$1505958178** | &nbsp;&nbsp; **—** | &nbsp;&nbsp; **—** | &nbsp;&nbsp; **$1505958178** |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

† See Schedule of Investments for additional detailed categorizations.

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ClearBridge Energy Midstream Opportunity Fund Inc. 2026 Quarterly Report

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## Form NPORT-P: Monthly Portfolio Investments Report

### NPORT-P: Part A: General Information

**Item A.1. Information about the Registrant.**

- **a. Name of Registrant:** ClearBridge Energy Midstream Opportunity Fund Inc.

- **b. Investment Company Act file number:** 811-22546

- **c. CIK number of Registrant:** 0001517518

- **d. LEI of Registrant:** 549300U6RAJWN6OONX12

- **e. Address and telephone number of Registrant.**

  - **Street Address 1:** 620 Eighth Avenue

  - **City:** New York

  - **State:** NY

  - **Foreign country:** US

  - **Zip / Postal Code:** 10018

  - **Telephone number:** 1-888-777-0102

**Item A.2. Information about the Series.**

- **a. Name of Series:** ClearBridge Energy Midstream Opportunity Fund Inc.

- **c. LEI of Series:** 549300U6RAJWN6OONX12

**Item A.3. Reporting period.**

- **a. Date of fiscal year-end:** 2026-11-30

- **b. Date as of which information is reported:** 2026-02-27

**Item A.4. Final filing**

Does the Fund anticipate that this will be its final filing on Form N-PORT? **No**

### Fund Information

**Total Assets:** $1509731104.23

**Total Liabilities:** $378814268.06

**Net Assets:** $1130916836.17

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000000000 | -1.20%               | 9.66%                | 7.19%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $0.00                    | $3539799.21                                |
| Month 2  | $0.00                    | $96133414.75                               |
| Month 3  | $0.00                    | $129707215.18                              |

### Schedule of Portfolio Investments

| Name                              | Title                                            | Identifiers                                   | Payoff Profile   | Asset Category   | Issuer Category   | Country   |   Balance | Units   | Value (USD)   | % of Net Assets   | Maturity Date   | Coupon Type   | Annualized Rate (%)   | Restricted?   |   Fair Value Level | Lending Status   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Cheniere Energy Partners Lp       | Cheniere Energy Partners Lp COM UNIT             | CUSIP: 16411Q101<br>LEI: 5493005UEC8AZ34LDV29 | Long             | EC               | CORP              | US        |    611873 | NS      | $37507814.90  | 3.32%             |  |  |  | No            |                  1 | On Loan: No      |
| Plains GP Holdings LP             | Plains GP Holdings LP LTD PARTNR INT A           | CUSIP: 72651A207<br>LEI: 549300O56BSKRD8FAM12 | Long             | EC               | CORP              | US        |   2614816 | NS      | $58937952.64  | 5.21%             |  |  |  | No            |                  1 | On Loan: No      |
| Antero Midstream Corporation      | Antero Midstream Corporation COM                 | CUSIP: 03676B102<br>LEI: N/A                  | Long             | EC               | CORP              | US        |   3305098 | NS      | $74298603.04  | 6.57%             |  |  |  | No            |                  1 | On Loan: No      |
| TC Energy Corp                    | TC Energy Corp COM                               | CUSIP: 87807B107<br>LEI: 549300UGKOFV2IWJJG27 | Long             | EC               | CORP              | CA        |   1075172 | NS      | $69208821.64  | 6.12%             |  |  |  | No            |                  1 | On Loan: No      |
| JP Morgan Trust I                 | JP Morgan Trust I 100%UST MM INS                 | CUSIP: 4812A2835<br>LEI: 549300DM5WZMCZZ70R78 | Long             | STIV             | RF                | US        |  41315220 | PA      | $41315219.89  | 3.65%             | 2099-12-01      | Floating      | 0.00%                 | No            |                  1 | On Loan: No      |
| Plains All American Pipeline L.P. | Plains All American Pipeline L.P. UNIT LTD PARTN | CUSIP: 726503105<br>LEI: 5521FA2ITF25TVH63740 | Long             | EC               | CORP              | US        |   2670671 | NS      | $55843730.61  | 4.94%             |  |  |  | No            |                  1 | On Loan: No      |
| Kinder Morgan, Inc.               | Kinder Morgan, Inc. COM                          | CUSIP: 49456B101<br>LEI: 549300WR7IX8XE0TBO16 | Long             | EC               | CORP              | US        |   2976364 | NS      | $99023630.28  | 8.76%             |  |  |  | No            |                  1 | On Loan: No      |
| Genesis Energy L.P.               | Genesis Energy L.P. UNIT LTD PARTN               | CUSIP: 371927104<br>LEI: 549300VJ5D6MDK138782 | Long             | EC               | CORP              | US        |   2897883 | NS      | $52335766.98  | 4.63%             |  |  |  | No            |                  1 | On Loan: No      |
| SunocoCorp LLC                    | SunocoCorp LLC COM SHS LLC                       | CUSIP: 86765Q106<br>LEI: 529900W6BS3KGM2OOQ61 | Long             | EC               | CORP              | US        |    460000 | NS      | $27549400.00  | 2.44%             |  |  |  | No            |                  1 | On Loan: No      |
| DT Midstream Inc                  | DT Midstream Inc COMMON STOCK                    | CUSIP: 23345M107<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    195705 | NS      | $27171682.20  | 2.40%             |  |  |  | No            |                  1 | On Loan: No      |
| MPLX LP                           | MPLX LP COM UNIT REP LTD                         | CUSIP: 55336V100<br>LEI: 5493000CZJ19CK4P3G36 | Long             | EC               | CORP              | US        |   1946431 | NS      | $114722643.14 | 10.14%            |  |  |  | No            |                  1 | On Loan: No      |
| Hess Midstream LP                 | Hess Midstream LP CL A SHS                       | CUSIP: 428103105<br>LEI: N/A                  | Long             | EC               | CORP              | US        |   1465985 | NS      | $56704299.80  | 5.01%             |  |  |  | No            |                  1 | On Loan: No      |
| Enbridge Inc.                     | Enbridge Inc. COM                                | CUSIP: 29250N105<br>LEI: 98TPTUM4IVMFCZBCUR27 | Long             | EC               | CORP              | CA        |   1444796 | NS      | $76776459.44  | 6.79%             |  |  |  | No            |                  1 | On Loan: No      |
| Delek Logistics Partners Lp       | Delek Logistics Partners Lp COM UNT RP INT       | CUSIP: 24664T103<br>LEI: 549300UVYITDIU51P724 | Long             | EC               | CORP              | US        |    279818 | NS      | $14530948.74  | 1.28%             |  |  |  | No            |                  1 | On Loan: No      |
| Western Midstream Partners LP     | Western Midstream Partners LP COM UNIT LP INT    | CUSIP: 958669103<br>LEI: N/A                  | Long             | EC               | CORP              | US        |   2332943 | NS      | $97027099.37  | 8.58%             |  |  |  | No            |                  1 | On Loan: No      |
| Enterprise Products Partners L.P. | Enterprise Products Partners L.P. COM            | CUSIP: 293792107<br>LEI: K4CDIF4M54DJZ6TB4Q48 | Long             | EC               | CORP              | US        |   2378260 | NS      | $85950316.40  | 7.60%             |  |  |  | No            |                  1 | On Loan: No      |
| Williams Companies Inc. (The)     | Williams Companies Inc. (The) COM                | CUSIP: 969457100<br>LEI: D71FAKCBLFS2O0RBPG08 | Long             | EC               | CORP              | US        |   1642114 | NS      | $122698758.08 | 10.85%            |  |  |  | No            |                  1 | On Loan: No      |
| Energy Transfer LP                | Energy Transfer LP COM UT LTD PTN                | CUSIP: 29273V100<br>LEI: MTLVN9N7JE8MIBIJ1H73 | Long             | EC               | CORP              | US        |   6973259 | NS      | $131376199.56 | 11.62%            |  |  |  | No            |                  1 | On Loan: No      |
| TARGA RESOURCES CORP              | TARGA RESOURCES CORP                             | CUSIP: 87612G101<br>LEI: 5493003QENHHS261UR94 | Long             | EC               | CORP              | US        |    710170 | NS      | $167458086.00 | 14.81%            |  |  |  | No            |                  1 | On Loan: No      |
| ONEOK INC                         | ONEOK INC                                        | CUSIP: 682680103<br>LEI: 2T3D6M0JSY48PSZI1Q41 | Long             | EC               | CORP              | US        |   1173728 | NS      | $97149466.56  | 8.59%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2026-04-24

**Name of Applicant:** ClearBridge Energy Midstream Opportunity Fund Inc.

**Signature:** Christopher Berarducci

**Name of Signer:** Christopher Berarducci

**Title:** Principal Financial Officer