# EDGAR Filing Document

**Accession Number:** 0001454741
**File Stem:** 0001193125-25-300003
**Filing Date:** 2025-11
**Character Count:** 135889
**Document Hash:** d79a50393c7dd90241b19085cf84e54e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-300003.hdr.sgml**: 20251126

**ACCESSION NUMBER**: 0001193125-25-300003

**CONFORMED SUBMISSION TYPE**: N-CSRS

**PUBLIC DOCUMENT COUNT**: 5

**CONFORMED PERIOD OF REPORT**: 20250930

**FILED AS OF DATE**: 20251126

**DATE AS OF CHANGE**: 20251126

**EFFECTIVENESS DATE**: 20251126

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Eaton Vance National Municipal Opportunities Trust
- **CENTRAL INDEX KEY:** 0001454741

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** N-CSRS
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-22269
- **FILM NUMBER:** 251528794

**BUSINESS ADDRESS:**
- **STREET 1:** ONE POST OFFICE SQUARE
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02109
- **BUSINESS PHONE:** 617-482-8260

**MAIL ADDRESS:**
- **STREET 1:** ONE POST OFFICE SQUARE
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02109

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Eaton Vance National Municipal Trust
- **DATE OF NAME CHANGE:** 20090126

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

**Form N-CSR** 

**CERTIFIED SHAREHOLDER REPORT OF REGISTERED** 

**MANAGEMENT INVESTMENT COMPANIES** 

**Investment Company Act File Number: 811-22269** 

## Eaton Vance National Municipal Opportunities Trust
**(Exact Name of Registrant as Specified in Charter)** 

**One Post Office Square, Boston, Massachusetts 02109** 

**(Address of Principal Executive Offices)** 

**Deidre E. Walsh** 

**One Post Office Square, Boston, Massachusetts 02109** 

**(Name and Address of Agent for Services)** 

**(617) 482-8260** 

**(Registrant's Telephone Number)** 

**March 31** 

**Date of Fiscal Year End** 

**September 30, 2025** 

**Date of Reporting Period** 

------

**Item 1. Reports to Stockholders** 

(a) ------

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## Eaton Vance

## National Municipal Opportunities Trust (EOT)

## Semi-Annual Report
September 30, 2025

------

![](g55436imgc445317a1.gif)

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**Commodity Futures Trading Commission Registration. The Commodity Futures Trading Commission ("CFTC") has adopted regulations that subject registered investment companies and advisers to regulation by the CFTC if a fund invests more than a prescribed level of its assets in certain CFTC-regulated instruments (including futures, certain options and swap agreements) or markets itself as providing investment exposure to such instruments. The investment adviser has claimed an exclusion from the definition of "commodity pool operator" under the Commodity Exchange Act with respect to its management of the Fund. Accordingly, neither the Fund nor the adviser with respect to the operation of the Fund is subject to CFTC regulation. Because of its management of other strategies, the Fund's adviser is registered with the CFTC as a commodity pool operator. The adviser is also registered as a commodity trading advisor.**

**Fund shares are not insured by the FDIC and are not deposits or other obligations of, or guaranteed by, any depository institution. Shares are subject to investment risks, including possible loss of principal invested.**

------

#### Semi-Annual Report September 30, 2025
Eaton Vance

National Municipal Opportunities Trust

---

| | |
|:---|:---|
| **[**Table of Contents**](#xx_2f9b496f-fa07-4241-8e46-bdcbab1f2232_1)** |  |
| [Performance](#xx_cd867587-c02d-43d7-9049-60d01848542a_1) | 2 |
| [Fund Profile](#xx_cd867587-c02d-43d7-9049-60d01848542a_2) | 3 |
| [Endnotes and Additional Disclosures](#xx_3eeb8912-5265-487d-8f0a-4997c3c8c12e_1) | 4 |
| [Financial Statements](#xx_4f70be62-e5fc-494c-b825-5a62186ef41d_1) | 5 |
| [Board of Trustees' Contract Approval](#xx_c1c2ddd5-0ec9-4790-a145-8d084a5b960b_1) | 20 |
| [Officers and Trustees](#xx_0ff2f29b-078c-4447-a891-9132a467cd1a_1) | 24 |
| [U.S. Customer Privacy Notice](#xx_dd35503e-674f-4234-a809-0c7c851e5fb3_1) | 25 |
| [Important Notices](#xx_f3e87935-a339-4354-b496-8d03159048e1_1) | 28 |

---

------

[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Performance

------

#### Portfolio Manager(s) Cynthia J. Clemson and William J. Delahunty, Jr., CFA

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **% Average Annual Total Returns<sup>1,2</sup>** | **Inception Date** | **Six Months** | **One Year** | **Five Years** | **Ten Years** |
| &nbsp;&nbsp;Fund at NAV | 05/29/2009 | 2.28% | (0.28)% | 0.98% | 2.44% |
| &nbsp;&nbsp;Fund at Market Price |  | 2.45 | (2.67) | 0.53 | 2.49 |
| &nbsp;&nbsp;Bloomberg Municipal Bond Index |  | 2.87% | &nbsp;&nbsp;&nbsp;1.39% | 0.85% | 2.34% |

---

---

| | |
|:---|:---|
| **% Premium/Discount to NAV<sup>3</sup>** | |
| &nbsp;&nbsp;As of period end | (7.40)% |

---

---

| | |
|:---|:---|
| **Distributions <sup>4</sup>** | |
| &nbsp;&nbsp;Total Distributions per share for the period | &nbsp;&nbsp;&nbsp;$0.41 |
| &nbsp;&nbsp;Distribution Rate at NAV | 4.56% |
| &nbsp;&nbsp;Taxable-Equivalent Distribution Rate at NAV | 7.70 |
| &nbsp;&nbsp;Distribution Rate at Market Price | 4.93 |
| &nbsp;&nbsp;Taxable-Equivalent Distribution Rate at Market Price | 8.32 |

---

---

| | |
|:---|:---|
| **% Total Leverage<sup>5</sup>** | |
| &nbsp;&nbsp;Residual Interest Bond (RIB) Financing | &nbsp;&nbsp;12.54% |

---

*See Endnotes and Additional Disclosures in this report.*

*Past performance is no guarantee of future results. Returns are historical and are calculated net of management fees and other expenses by determining the percentage change in net asset value (NAV) or market price (as applicable) with all distributions reinvested in accordance with the Fund's Dividend Reinvestment Plan. Furthermore, returns do not reflect the deduction of taxes that shareholders may have to pay on Fund distributions or upon the sale of Fund shares. Performance at market price will differ from performance at NAV due to variations in the Fund's market price versus NAV, which may reflect factors such as fluctuations in supply and demand for Fund shares, changes in Fund distributions, shifting market expectations for the Fund's future returns and distribution rates, and other considerations affecting the trading prices of closed-end funds. Investment return and principal value will fluctuate so that shares, when sold, may be worth more or less than their original cost. Performance for periods less than or equal to one year is cumulative. Performance is for the stated time period only; due to market volatility, current Fund performance may be lower or higher than the quoted return. For performance as of the most recent month-end, please refer to eatonvance.com.*

------

[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Fund Profile

------

Credit Quality (% of total investments)<sup>1,2</sup>

![](g55436img310b302c2.jpg)

Footnotes:

<sup>1</sup> For purposes of the Fund's rating restrictions, ratings are based on Moody's Investors Service, Inc. ("Moody's"), S&P Global Ratings ("S&P") or Fitch Ratings ("Fitch"), as applicable. If securities are rated differently by the ratings agencies, the highest rating is applied. Ratings, which are subject to change, apply to the creditworthiness of the issuers of the underlying securities and not to the Fund or its shares. Credit ratings measure the quality of a bond based on the issuer's creditworthiness, with ratings ranging from AAA, being the highest, to D, being the lowest based on S&P's measures. Ratings of BBB or higher by S&P or Fitch (Baa or higher by Moody's) are considered to be investment-grade quality. Credit ratings are based largely on the ratings agency's analysis at the time of rating. The rating assigned to any particular security is not necessarily a reflection of the issuer's current financial condition and does not necessarily reflect its assessment of the volatility of a security's market value or of the liquidity of an investment in the security. Holdings designated as "Not Rated" (if any) are not rated by the national ratings agencies stated above.

<sup>2</sup> The chart includes the municipal bonds held by a trust that issues residual interest bonds, consistent with the Portfolio of Investments.

------

[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Endnotes and Additional Disclosures

------

<sup>1</sup> Bloomberg Municipal Bond Index is an unmanaged index of municipal bonds traded in the U.S. Unless otherwise stated, index returns do not reflect the effect of any applicable sales charges, commissions, expenses, taxes or leverage, as applicable. It is not possible to invest directly in an index.

<sup>2</sup> Performance results reflect the effects of leverage.

<sup>3</sup> The shares of the Fund often trade at a discount or premium to their net asset value. The discount or premium may vary over time and may be higher or lower than what is quoted in this report. For up-to-date premium/discount information, please refer to https://funds.eatonvance.com/closed-end-fund-prices.php.

<sup>4</sup> The Distribution Rate is based on the Fund's last regular distribution per share in the period (annualized) divided by the Fund's NAV or market price at the end of the period. The Fund's distributions may be comprised of amounts characterized for federal income tax purposes as tax-exempt income, qualified and non-qualified ordinary dividends, capital gains and nondividend distributions, also known as return of capital. The Fund will determine the federal income tax character of distributions paid to a shareholder after the end of the calendar year. This is reported on the IRS form 1099-DIV and provided to the shareholder shortly after each year-end. For information about the tax character of distributions made in prior calendar years, please refer to Pricing and Performance - Distributions on the Fund's webpage available at eatonvance.com. The Fund's distributions are determined by the investment adviser based on its current assessment of the Fund's long-term return potential. Fund distributions may be affected by numerous factors including changes in Fund performance, the cost of financing for leverage, portfolio holdings, realized and projected returns, and other factors. As portfolio and market conditions change, the rate of distributions paid by the Fund could change. Taxable- equivalent performance is based on the highest combined federal and state income tax rates, where applicable. Lower tax rates would result in lower tax-equivalent performance. Actual tax rates will vary depending on your income, exemptions and deductions. Rates do not include local taxes.

Fund profile subject to change due to active management.

------

[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Portfolio of Investments (Unaudited)

------

Corporate Bonds — 1.0%

---

| | | |
|:---|:---|:---|
| **<br>Security** | **Principal <br> Amount<br> (000's omitted)** | &nbsp;&nbsp;**Value** |
| Other Revenue — 1.0% | Other Revenue — 1.0% | Other Revenue — 1.0% |
| Morongo Band of Mission Indians, 7.00%, 10/1/39<sup>(1)</sup> | $2430 | &nbsp;&nbsp;$2627801 |
| Total Corporate Bonds<br> (identified cost $2,430,000) |  | &nbsp;&nbsp;**$2627801** |

---

Tax-Exempt Municipal Obligations — 107.5%

---

| | | |
|:---|:---|:---|
| **<br>Security** | **Principal <br> Amount<br> (000's omitted)** | &nbsp;&nbsp;**Value** |
| Bond Bank — 0.6% | Bond Bank — 0.6% | Bond Bank — 0.6% |
| Texas Water Development Board, 4.80%, 10/15/52 | $1500 | &nbsp;&nbsp;$1532077 |
|  |  | &nbsp;&nbsp;**$1532077** |
| Education — 5.1% | Education — 5.1% | Education — 5.1% |
| Arizona Industrial Development Authority, (Pinecrest Academy of Nevada), 4.00%, 7/15/50<sup>(1)</sup> | $&nbsp;&nbsp;&nbsp;&nbsp;185 | &nbsp;&nbsp;$147191 |
| Boyle County, KY, (Centre College), 4.50%, 6/1/53 | 1000 | &nbsp;&nbsp;&nbsp;&nbsp; 908380 |
| California Municipal Finance Authority, (Westside Neighborhood School), 6.20%, 6/15/54<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;880 | &nbsp;&nbsp;&nbsp;&nbsp; 917613 |
| Capital Trust Agency, FL, (Florida Charter Educational Foundation, Inc.): |  |  |
| &nbsp;&nbsp;&nbsp;5.375%, 6/15/38<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;210 | &nbsp;&nbsp;&nbsp;&nbsp; 205625 |
| &nbsp;&nbsp;&nbsp;5.375%, 6/15/48<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;395 | &nbsp;&nbsp;&nbsp;&nbsp; 360611 |
| District of Columbia, (KIPP DC), 4.00%, 7/1/44 | &nbsp;&nbsp;&nbsp;&nbsp;410 | &nbsp;&nbsp;&nbsp;&nbsp; 359128 |
| Idaho Housing and Finance Association, (Alturas Preparatory Academy), 4.125%, 5/1/44 | 1000 | &nbsp;&nbsp;&nbsp;&nbsp; 915363 |
| Illinois Finance Authority, (DePaul College Prep Foundation), 5.625%, 8/1/53<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;750 | &nbsp;&nbsp;&nbsp;&nbsp; 763902 |
| Jacksonville, FL, (Jacksonville University), 5.00%, 6/1/53<sup>(1)</sup> | 1000 | &nbsp;&nbsp;&nbsp;&nbsp; 825098 |
| Pennsylvania University, 5.25%, 9/1/50<sup>(2)</sup> | 3000 | &nbsp;&nbsp;&nbsp;&nbsp; 3215640 |
| Public Finance Authority, WI, (Cornerstone Charter Academy): |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, 2/1/54 | &nbsp;&nbsp;&nbsp;&nbsp;900 | &nbsp;&nbsp;&nbsp;&nbsp; 867843 |
| &nbsp;&nbsp;&nbsp;5.00%, 2/1/64 | 2000 | &nbsp;&nbsp;&nbsp;&nbsp; 1888388 |
| Public Finance Authority, WI, (North Carolina Leadership Academy), 5.00%, 6/15/54<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;455 | &nbsp;&nbsp;&nbsp;&nbsp; 404934 |
| Public Finance Authority, WI, (Roseman University of Health Sciences): |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, 4/1/52<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;245 | &nbsp;&nbsp;&nbsp;&nbsp; 191583 |
| &nbsp;&nbsp;&nbsp;5.00%, 4/1/40<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;620 | &nbsp;&nbsp;&nbsp;&nbsp; 611398 |
| &nbsp;&nbsp;&nbsp;5.00%, 4/1/50<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;830 | &nbsp;&nbsp;&nbsp;&nbsp; 759506 |

---

---

| | | |
|:---|:---|:---|
| **<br>Security** | **Principal <br> Amount<br> (000's omitted)** | &nbsp;&nbsp;**Value** |
| Education (continued) | Education (continued) | Education (continued) |
| South Carolina Jobs-Economic Development Authority, (Carolina Voyager), 5.00%, 6/15/44<sup>(1)</sup> | $1000 | &nbsp;&nbsp;$985676 |
| Yonkers Economic Development Corp., NY, (Lamartine/Warburton, LLC - Charter School of Educational Excellence), 5.00%, 10/15/49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;70 | &nbsp;&nbsp;&nbsp;&nbsp; 64923 |
|  |  | &nbsp;&nbsp;**$14392802** |
| Electric Utilities — 2.9% | Electric Utilities — 2.9% | Electric Utilities — 2.9% |
| Burke County Development Authority, GA, (Oglethorpe Power Corp.), 4.125%, 11/1/45 | $4250 | &nbsp;&nbsp;$3827503 |
| Lower Colorado River Authority, TX, (LCRA Transmission Services Corp.), 5.50%, 5/15/47 | 2000 | &nbsp;&nbsp;&nbsp;&nbsp; 2119911 |
| Omaha Public Power District, NE, 5.00%, 2/1/47 | 2000 | &nbsp;&nbsp;&nbsp;&nbsp; 2064383 |
|  |  | &nbsp;&nbsp;**$8011797** |
| Escrowed/Prerefunded — 0.6% | Escrowed/Prerefunded — 0.6% | Escrowed/Prerefunded — 0.6% |
| Iowa Finance Authority, (Iowa Fertilizer Co.), Prerefunded to 12/1/32, 5.00%, 12/1/50 | $1500 | &nbsp;&nbsp;$1727992 |
| Public Finance Authority, WI, (Roseman University of Health Sciences): |  |  |
| &nbsp;&nbsp;&nbsp;Prerefunded to 4/1/30, 5.00%, 4/1/50<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10 | &nbsp;&nbsp;&nbsp;&nbsp; 10998 |
| &nbsp;&nbsp;&nbsp;Prerefunded to 4/1/32, 4.00%, 4/1/52<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5 | &nbsp;&nbsp;&nbsp;&nbsp; 5347 |
|  |  | &nbsp;&nbsp;**$1744337** |
| General Obligations — 12.6% | General Obligations — 12.6% | General Obligations — 12.6% |
| Alvin Independent School District, TX, (PSF Guaranteed): |  |  |
| &nbsp;&nbsp;&nbsp;5.25%, 2/15/50<sup>(2)</sup> | $2750 | &nbsp;&nbsp;$2945387 |
| &nbsp;&nbsp;&nbsp;5.25%, 2/15/53<sup>(2)</sup> | 2750 | &nbsp;&nbsp;&nbsp;&nbsp; 2935873 |
| Chicago Board of Education, IL: |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, 12/1/42 | 6410 | &nbsp;&nbsp;&nbsp;&nbsp; 6053453 |
| &nbsp;&nbsp;&nbsp;6.00%, 12/1/49 | 1750 | &nbsp;&nbsp;&nbsp;&nbsp; 1784444 |
| Chicago, IL, 6.00%, 1/1/45 | 2000 | &nbsp;&nbsp;&nbsp;&nbsp; 2122059 |
| Jackson County School District No. 6, OR, 0.00%, 6/15/41 | &nbsp;&nbsp;&nbsp;&nbsp;710 | &nbsp;&nbsp;&nbsp;&nbsp; 335442 |
| Massachusetts, 5.00%, 4/1/55<sup>(2)</sup> | 2500 | &nbsp;&nbsp;&nbsp;&nbsp; 2610850 |
| Mesquite Independent School District, TX, (PSF Guaranteed): |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, 8/15/49 | &nbsp;&nbsp;&nbsp;&nbsp;170 | &nbsp;&nbsp;&nbsp;&nbsp; 178943 |
| &nbsp;&nbsp;&nbsp;5.00%, 8/15/49<sup>(2)</sup> | 4000 | &nbsp;&nbsp;&nbsp;&nbsp; 4210400 |
| Northside Independent School District, TX, (PSF Guaranteed), 5.25%, 2/15/55<sup>(2)</sup> | 4500 | &nbsp;&nbsp;&nbsp;&nbsp; 4779135 |
| Puerto Rico: |  |  |
| &nbsp;&nbsp;&nbsp;0.00%, 7/1/33 | 2000 | &nbsp;&nbsp;&nbsp;&nbsp; 1430852 |
| &nbsp;&nbsp;&nbsp;4.00%, 7/1/35 | 2127 | &nbsp;&nbsp;&nbsp;&nbsp; 2076301 |

---

*See Notes to Financial Statements.*

------

[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Portfolio of Investments (Unaudited) — continued

------

---

| | | |
|:---|:---|:---|
| **<br>Security** | **Principal <br> Amount<br> (000's omitted)** | &nbsp;&nbsp;**Value** |
| General Obligations (continued) | General Obligations (continued) | General Obligations (continued) |
| Spring Independent School District, TX, (PSF Guaranteed), 5.25%, 8/15/55<sup>(2)</sup> | $3600 | &nbsp;&nbsp;$3832848 |
| Township of Freehold, NJ, 1.00%, 10/15/29 | &nbsp;&nbsp;&nbsp;&nbsp;145 | &nbsp;&nbsp;&nbsp;&nbsp; 132865 |
|  |  | &nbsp;&nbsp;**$35428852** |
| Hospital — 5.6% | Hospital — 5.6% | Hospital — 5.6% |
| Allegheny County Hospital Development Authority, PA, (Allegheny Health Network Obligated Group), 5.00%, 4/1/47 | $3000 | &nbsp;&nbsp;$3001208 |
| Astoria Hospital Facilities Authority, OR, (Columbia Memorial Hospital), 5.25%, 8/1/49 | 2000 | &nbsp;&nbsp;&nbsp;&nbsp; 2006730 |
| Geisinger Authority, PA, (Geisinger Health System), 4.00%, 2/15/47 | 1105 | &nbsp;&nbsp;&nbsp;&nbsp; 997041 |
| Idaho Health Facilities Authority, ID, (St. Luke's Health System), 4.375%, 3/1/53 | 1000 | &nbsp;&nbsp;&nbsp;&nbsp; 918068 |
| Illinois Finance Authority, (Ascension), 4.00%, 2/15/36 | &nbsp;&nbsp;&nbsp;&nbsp;505 | &nbsp;&nbsp;&nbsp;&nbsp; 505613 |
| Michigan Finance Authority, (McLaren Health Care), 4.00%, 2/15/47 | &nbsp;&nbsp;&nbsp;&nbsp;995 | &nbsp;&nbsp;&nbsp;&nbsp; 883801 |
| Montgomery County Higher Education and Health Authority, PA, (Thomas Jefferson University Obligated Group), 5.00%, 5/1/57 | 2725 | &nbsp;&nbsp;&nbsp;&nbsp; 2741087 |
| Muskingum County, OH, (Genesis HealthCare System Obligated Group), 5.00%, 2/15/44 | 1330 | &nbsp;&nbsp;&nbsp;&nbsp; 1279010 |
| Pennsylvania Economic Development Financing Authority, (UPMC), 4.00%, 5/15/48 | &nbsp;&nbsp;&nbsp;&nbsp;500 | &nbsp;&nbsp;&nbsp;&nbsp; 445015 |
| West Virginia Hospital Finance Authority, (West Virginia University Health System Obligated Group), 4.375%, 6/1/53 | 2010 | &nbsp;&nbsp;&nbsp;&nbsp; 1867435 |
| Westchester County Local Development Corp., NY, (Westchester Medical Center Obligated Group), 6.25%, 11/1/52 | &nbsp;&nbsp;&nbsp;&nbsp;225 | &nbsp;&nbsp;&nbsp;&nbsp; 225520 |
| Wisconsin Health and Educational Facilities Authority, (Marshfield Clinic Health System, Inc.), 5.50%, 2/15/54 | &nbsp;&nbsp;&nbsp;&nbsp;915 | &nbsp;&nbsp;&nbsp;&nbsp; 969479 |
|  |  | &nbsp;&nbsp;**$15840007** |
| Housing — 7.0% | Housing — 7.0% | Housing — 7.0% |
| Dallas Housing Finance Corp., TX, (Hiline Illinois), (FNMA), 5.00%, 3/1/44 | $2850 | &nbsp;&nbsp;$2925464 |
| Indiana Housing and Community Development Authority, SFMR, Social Bonds, (FHLMC), (FNMA), (GNMA), 4.70%, 7/1/53 | 1480 | &nbsp;&nbsp;&nbsp;&nbsp; 1486680 |
| Michigan Housing Development Authority, Social Bonds, 5.00%, 12/1/55 | 1115 | &nbsp;&nbsp;&nbsp;&nbsp; 1143233 |
| New Hampshire Business Finance Authority, Social Certificates, 4.75% to 6/1/35 (Put Date), 6/20/41 | 2499 | &nbsp;&nbsp;&nbsp;&nbsp; 2535307 |
| Pennsylvania Housing Finance Agency, SFMR, Social Bonds, 5.45%, 4/1/51 | 3500 | &nbsp;&nbsp;&nbsp;&nbsp; 3644112 |

---

---

| | | |
|:---|:---|:---|
| **<br>Security** | **Principal <br> Amount<br> (000's omitted)** | &nbsp;&nbsp;**Value** |
| Housing (continued) | Housing (continued) | Housing (continued) |
| Public Finance Authority, WI, (KSU Bixby Real Estate Foundation LLC), 5.50%, 6/15/45 | $&nbsp;&nbsp;&nbsp;&nbsp;700 | &nbsp;&nbsp;$691544 |
| Rhode Island Housing and Mortgage Finance Corp., Social Bonds, (GNMA), 4.65%, 10/1/53 | 1675 | &nbsp;&nbsp;&nbsp;&nbsp; 1648461 |
| Texas Department of Housing and Community Affairs, (GNMA), 5.125%, 1/1/54 | 1555 | &nbsp;&nbsp;&nbsp;&nbsp; 1602986 |
| Washington Housing Finance Commission, Social Certificates, 3.375%, 4/20/37 | 3343 | &nbsp;&nbsp;&nbsp;&nbsp; 3108274 |
| Washington State Housing Finance Commission, (Radford Court and Nordheim Court), 5.00%, 7/1/54 | 1000 | &nbsp;&nbsp;&nbsp;&nbsp; 988934 |
|  |  | &nbsp;&nbsp;**$19774995** |
| Industrial Development Revenue — 5.5% | Industrial Development Revenue — 5.5% | Industrial Development Revenue — 5.5% |
| Arkansas Development Finance Authority, (United States Steel Corp.), Green Bonds, (AMT), 5.70%, 5/1/53 | $2540 | &nbsp;&nbsp;$2580035 |
| Hawaii Department of Budget and Finance, (Hawaiian Electric Co., Inc.), 3.20%, 7/1/39 | 1000 | &nbsp;&nbsp;&nbsp;&nbsp; 868141 |
| Henderson, KY, (Pratt Paper, LLC), (AMT), 4.70%, 1/1/52<sup>(1)</sup> | 2000 | &nbsp;&nbsp;&nbsp;&nbsp; 1861989 |
| National Finance Authority, NH, (Covanta): |  |  |
| &nbsp;&nbsp;&nbsp;4.625%, 11/1/42<sup>(1)</sup> | 1415 | &nbsp;&nbsp;&nbsp;&nbsp; 1276572 |
| &nbsp;&nbsp;&nbsp;(AMT), 4.875%, 11/1/42<sup>(1)</sup> | 1555 | &nbsp;&nbsp;&nbsp;&nbsp; 1437425 |
| New Hampshire Business Finance Authority, (Casella Waste Systems, Inc.), 2.95%, 4/1/29<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;560 | &nbsp;&nbsp;&nbsp;&nbsp; 537995 |
| New York Liberty Development Corp., (Goldman Sachs Group, Inc.), 5.25%, 10/1/35 | 2560 | &nbsp;&nbsp;&nbsp;&nbsp; 2946033 |
| New York Transportation Development Corp., (Delta Air Lines, Inc. - LaGuardia Airport Terminals C&D Redevelopment), (AMT), 5.00%, 10/1/40 | 2765 | &nbsp;&nbsp;&nbsp;&nbsp; 2795103 |
| Valparaiso, IN, (Pratt Paper IN LLC), (AMT), 5.00%, 1/1/54<sup>(1)</sup> | 1000 | &nbsp;&nbsp;&nbsp;&nbsp; 971131 |
| Vermont Economic Development Authority, (Casella Waste Systems, Inc.), (AMT), 4.625% to 4/3/28 (Put Date), 4/1/36<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;145 | &nbsp;&nbsp;&nbsp;&nbsp; 146311 |
|  |  | &nbsp;&nbsp;**$15420735** |
| Insured - Electric Utilities — 1.0% | Insured - Electric Utilities — 1.0% | Insured - Electric Utilities — 1.0% |
| Georgia Municipal Electric Authority, (Plant Vogtle Units 3 & 4 Project J), (AG), 5.00%, 7/1/64 | $1875 | &nbsp;&nbsp;$1884676 |
| Los Angeles Department of Water and Power, CA, (BAM), 5.00%, 7/1/55 | 1000 | &nbsp;&nbsp;&nbsp;&nbsp; 1028023 |
|  |  | &nbsp;&nbsp;**$2912699** |
| Insured - Hospital — 1.9% | Insured - Hospital — 1.9% | Insured - Hospital — 1.9% |
| Columbia County Hospital Authority, GA, (Wellstar Health System, Inc.), (AG), 5.00%, 4/1/53 | $1500 | &nbsp;&nbsp;$1526505 |
| Pennsylvania Higher Educational Facilities Authority, (Thomas Jefferson University), (AG), 4.25%, 11/1/51 | 1000 | &nbsp;&nbsp;&nbsp;&nbsp; 924136 |

---

*6*

*See Notes to Financial Statements.*

------

[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Portfolio of Investments (Unaudited) — continued

------

---

| | | |
|:---|:---|:---|
| **<br>Security** | **Principal <br> Amount<br> (000's omitted)** | &nbsp;&nbsp;**Value** |
| Insured - Hospital (continued) | Insured - Hospital (continued) | Insured - Hospital (continued) |
| West Virginia Hospital Finance Authority, (Vandalia Health), (AG), 5.50%, 9/1/48 | $2000 | &nbsp;&nbsp;$2135415 |
| Westchester County Local Development Corp., NY, (Westchester Medical Center Obligated Group), (AG), 5.00%, 11/1/51 | &nbsp;&nbsp;&nbsp;&nbsp;810 | &nbsp;&nbsp;&nbsp;&nbsp; 822855 |
|  |  | &nbsp;&nbsp;**$5408911** |
| Insured - Housing — 0.4% | Insured - Housing — 0.4% | Insured - Housing — 0.4% |
| Knox County Health, Educational and Housing Facility Board, TN, (University of Tennessee), (BAM), 5.25%, 7/1/64 | $1000 | &nbsp;&nbsp;$1021407 |
|  |  | &nbsp;&nbsp;**$1021407** |
| Insured - Lease Revenue/Certificates of Participation — 0.6% | Insured - Lease Revenue/Certificates of Participation — 0.6% | Insured - Lease Revenue/Certificates of Participation — 0.6% |
| Hinds County, MS, Lease Purchase, (BAM), 4.625%, 9/1/54<sup>(1)</sup> | $2000 | &nbsp;&nbsp;$1797771 |
|  |  | &nbsp;&nbsp;**$1797771** |
| Insured - Other Revenue — 0.1% | Insured - Other Revenue — 0.1% | Insured - Other Revenue — 0.1% |
| New York City Industrial Development Agency, NY, (Queens Baseball Stadium), (AG), 3.00%, 1/1/46 | $&nbsp;&nbsp;&nbsp;&nbsp;280 | &nbsp;&nbsp;$212398 |
|  |  | &nbsp;&nbsp;**$212398** |
| Insured - Special Tax Revenue — 4.6% | Insured - Special Tax Revenue — 4.6% | Insured - Special Tax Revenue — 4.6% |
| Miami-Dade County, FL, Professional Sports Franchise Facilities: |  |  |
| &nbsp;&nbsp;&nbsp;(AG), 6.875%, 10/1/34 | $4000 | &nbsp;&nbsp;$4578025 |
| &nbsp;&nbsp;&nbsp;(AG), 7.00%, 10/1/39 | 6000 | &nbsp;&nbsp;&nbsp;&nbsp; 6778819 |
| Tolomato Community Development District, FL: |  |  |
| &nbsp;&nbsp;&nbsp;(AG), 3.75%, 5/1/39 | &nbsp;&nbsp;&nbsp;&nbsp;720 | &nbsp;&nbsp;&nbsp;&nbsp; 718108 |
| &nbsp;&nbsp;&nbsp;(AG), 3.75%, 5/1/40 | &nbsp;&nbsp;&nbsp;&nbsp;855 | &nbsp;&nbsp;&nbsp;&nbsp; 844987 |
|  |  | &nbsp;&nbsp;**$12919939** |
| Insured - Transportation — 8.0% | Insured - Transportation — 8.0% | Insured - Transportation — 8.0% |
| Metropolitan Transportation Authority, NY: |  |  |
| &nbsp;&nbsp;&nbsp;Green Bonds, (AG), 4.00%, 11/15/48 | $6225 | &nbsp;&nbsp;$5554668 |
| &nbsp;&nbsp;&nbsp;Green Bonds, (BAM), 4.00%, 11/15/48 | 1500 | &nbsp;&nbsp;&nbsp;&nbsp; 1361847 |
| New York Transportation Development Corp., (John F. Kennedy International Airport Terminal 6 Redevelopment), Green Bonds, (AG), (AMT), 5.25%, 12/31/54 | 2650 | &nbsp;&nbsp;&nbsp;&nbsp; 2701696 |
| North Carolina Turnpike Authority, (Triangle Expressway System): |  |  |
| &nbsp;&nbsp;&nbsp;(AG), 0.00%, 1/1/35 | 4000 | &nbsp;&nbsp;&nbsp;&nbsp; 2870801 |
| &nbsp;&nbsp;&nbsp;(AG), 0.00%, 1/1/36 | 13000 | &nbsp;&nbsp;&nbsp;&nbsp; 8876524 |

---

---

| | | |
|:---|:---|:---|
| **<br>Security** | **Principal <br> Amount<br> (000's omitted)** | &nbsp;&nbsp;**Value** |
| Insured - Transportation (continued) | Insured - Transportation (continued) | Insured - Transportation (continued) |
| Pennsylvania Economic Development Financing Authority, (PennDOT Major Bridges Package One), (AG), (AMT), 5.00%, 12/31/57 | $1000 | &nbsp;&nbsp;$1007585 |
|  |  | &nbsp;&nbsp;**$22373121** |
| Lease Revenue/Certificates of Participation — 7.7% | Lease Revenue/Certificates of Participation — 7.7% | Lease Revenue/Certificates of Participation — 7.7% |
| Baltimore, MD, (Harbor Point), 4.875%, 6/1/42 | $&nbsp;&nbsp;&nbsp;&nbsp;320 | &nbsp;&nbsp;$320485 |
| National Finance Authority, NH, (Centurion BioSquare, Inc.), 5.88%, 12/15/38 | 2610 | &nbsp;&nbsp;&nbsp;&nbsp; 2655759 |
| New Jersey Economic Development Authority, (Portal North Bridge), 5.00%, 11/1/52 | 2000 | &nbsp;&nbsp;&nbsp;&nbsp; 2047843 |
| New Jersey Economic Development Authority, (School Facilities Construction): |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, 6/15/43 | &nbsp;&nbsp;&nbsp;&nbsp;435 | &nbsp;&nbsp;&nbsp;&nbsp; 444588 |
| &nbsp;&nbsp;&nbsp;5.00%, 6/15/44 | 4205 | &nbsp;&nbsp;&nbsp;&nbsp; 4310117 |
| New Jersey Transportation Trust Fund Authority, (Transportation System), 0.00%, 12/15/38 | 20000 | &nbsp;&nbsp;&nbsp;&nbsp; 11701112 |
|  |  | &nbsp;&nbsp;**$21479904** |
| Other Revenue — 2.4% | Other Revenue — 2.4% | Other Revenue — 2.4% |
| Buckeye Tobacco Settlement Financing Authority, OH, 5.00%, 6/1/55 | $3195 | &nbsp;&nbsp;$2730981 |
| Kalispel Tribe of Indians, WA, Series A, 5.25%, 1/1/38<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;390 | &nbsp;&nbsp;&nbsp;&nbsp; 397026 |
| Military Installation Development Authority, UT, 4.00%, 6/1/41 | &nbsp;&nbsp;&nbsp;&nbsp;500 | &nbsp;&nbsp;&nbsp;&nbsp; 446047 |
| Morongo Band of Mission Indians, CA, 5.00%, 10/1/42<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;605 | &nbsp;&nbsp;&nbsp;&nbsp; 608545 |
| Patriots Energy Group Financing Agency, SC, Gas Supply Revenue, 5.25% to 8/1/31 (Put Date), 10/1/54 | 1000 | &nbsp;&nbsp;&nbsp;&nbsp; 1090006 |
| Salt Verde Financial Corp., AZ, Senior Gas Revenue, 5.00%, 12/1/37 | 1245 | &nbsp;&nbsp;&nbsp;&nbsp; 1337479 |
|  |  | &nbsp;&nbsp;**$6610084** |
| Senior Living/Life Care — 12.9% | Senior Living/Life Care — 12.9% | Senior Living/Life Care — 12.9% |
| Atlantic Beach, FL, (Fleet Landing), 5.00%, 11/15/37 | $3405 | &nbsp;&nbsp;$3406197 |
| Bexar County Health Facilities Development Corp., TX, (Army Retirement Residence Foundation), 5.00%, 7/15/42 | &nbsp;&nbsp;&nbsp;&nbsp;665 | &nbsp;&nbsp;&nbsp;&nbsp; 611047 |
| Clackamas County Hospital Facility Authority, OR, (Rose Villa), 5.25%, 11/15/50 | &nbsp;&nbsp;&nbsp;&nbsp;125 | &nbsp;&nbsp;&nbsp;&nbsp; 119096 |
| Colorado Health Facilities Authority, (Aberdeen Ridge), 5.00%, 5/15/58 | 1110 | &nbsp;&nbsp;&nbsp;&nbsp; 763166 |
| Colorado Health Facilities Authority, (Covenant Living Communities and Services), 5.125%, 12/1/55 | 2000 | &nbsp;&nbsp;&nbsp;&nbsp; 2001556 |
| Harris County Cultural Education Facilities Finance Corp., TX, (Brazos Presbyterian Homes, Inc.): |  |  |
| &nbsp;&nbsp;&nbsp;5.75%, 1/1/28 | &nbsp;&nbsp;&nbsp;&nbsp;110 | &nbsp;&nbsp;&nbsp;&nbsp; 110172 |
| &nbsp;&nbsp;&nbsp;6.375%, 1/1/33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30 | &nbsp;&nbsp;&nbsp;&nbsp; 30060 |

---

*7*

*See Notes to Financial Statements.*

------

[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Portfolio of Investments (Unaudited) — continued

------

---

| | | |
|:---|:---|:---|
| **<br>Security** | **Principal <br> Amount<br> (000's omitted)** | &nbsp;&nbsp;**Value** |
| Senior Living/Life Care (continued) | Senior Living/Life Care (continued) | Senior Living/Life Care (continued) |
| Indiana Finance Authority, (Marquette), 5.25%, 3/1/50 | $4000 | &nbsp;&nbsp;$3939473 |
| Iowa Finance Authority, (Lifespace Communities, Inc.), 4.125%, 5/15/38 | 1500 | &nbsp;&nbsp;&nbsp;&nbsp; 1429136 |
| Lee County Industrial Development Authority, FL, (Shell Point Obligated Group), 5.25%, 11/15/54 | &nbsp;&nbsp;&nbsp;&nbsp;965 | &nbsp;&nbsp;&nbsp;&nbsp; 957204 |
| Massachusetts Development Finance Agency, (Linden Ponds, Inc.): |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, 11/15/33<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;470 | &nbsp;&nbsp;&nbsp;&nbsp; 484831 |
| &nbsp;&nbsp;&nbsp;5.00%, 11/15/38<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;310 | &nbsp;&nbsp;&nbsp;&nbsp; 318523 |
| Massachusetts Development Finance Agency, (NewBridge on the Charles, Inc.), 5.00%, 10/1/57<sup>(1)</sup> | 1650 | &nbsp;&nbsp;&nbsp;&nbsp; 1561195 |
| Montgomery County Industrial Development Authority, PA, (ACTS Retirement Communities, Inc.), 5.25%, 11/15/53 | 1500 | &nbsp;&nbsp;&nbsp;&nbsp; 1502961 |
| Multnomah County Hospital Facilities Authority, OR, (Terwilliger Plaza), 4.00%, 12/1/51 | 1475 | &nbsp;&nbsp;&nbsp;&nbsp; 1090640 |
| National Finance Authority, NH, (The Vista): |  |  |
| &nbsp;&nbsp;&nbsp;5.625%, 7/1/46<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;360 | &nbsp;&nbsp;&nbsp;&nbsp; 357835 |
| &nbsp;&nbsp;&nbsp;5.75%, 7/1/54<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;780 | &nbsp;&nbsp;&nbsp;&nbsp; 769069 |
| New Mexico Hospital Equipment Loan Council, (Haverland Carter Lifestyle Group): |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, 7/1/33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;45 | &nbsp;&nbsp;&nbsp;&nbsp; 45124 |
| &nbsp;&nbsp;&nbsp;5.00%, 7/1/34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;55 | &nbsp;&nbsp;&nbsp;&nbsp; 54800 |
| &nbsp;&nbsp;&nbsp;5.00%, 7/1/49 | 2000 | &nbsp;&nbsp;&nbsp;&nbsp; 1754626 |
| Norfolk Redevelopment and Housing Authority, VA, (Fort Norfolk Retirement Community, Inc. - Harbor's Edge), 5.00%, 1/1/49 | 3000 | &nbsp;&nbsp;&nbsp;&nbsp; 2702367 |
| North Carolina Medical Care Commission, (Twin Lakes Community), 5.25%, 1/1/55 | 2000 | &nbsp;&nbsp;&nbsp;&nbsp; 1980458 |
| North Carolina Medical Care Commission, (United Methodist Retirement Homes), 5.125%, 10/1/54 | &nbsp;&nbsp;&nbsp;&nbsp;500 | &nbsp;&nbsp;&nbsp;&nbsp; 496410 |
| Palm Beach County Health Facilities Authority, FL, (Green Cay Life Plan Village): |  |  |
| &nbsp;&nbsp;&nbsp;11.50%, 7/1/27<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;765 | &nbsp;&nbsp;&nbsp;&nbsp; 1080246 |
| &nbsp;&nbsp;&nbsp;11.50%, 7/1/27<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;100 | &nbsp;&nbsp;&nbsp;&nbsp; 100333 |
| Public Finance Authority, WI, (Mary's Woods at Marylhurst), 5.25%, 5/15/37<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;630 | &nbsp;&nbsp;&nbsp;&nbsp; 633400 |
| South Carolina Jobs-Economic Development Authority, (Seafields Kiawah Island Project), 7.75%, 11/15/58 | 2000 | &nbsp;&nbsp;&nbsp;&nbsp; 2130545 |
| Stamford Housing Authority, CT, (Mozaic Concierge Living), 6.00%, 10/1/40 | &nbsp;&nbsp;&nbsp;&nbsp;500 | &nbsp;&nbsp;&nbsp;&nbsp; 516158 |
| Tarrant County Cultural Education Facilities Finance Corp., TX, (MRC Stevenson Oaks), 6.625%, 11/15/41 | 1325 | &nbsp;&nbsp;&nbsp;&nbsp; 1244588 |
| Tempe Industrial Development Authority, AZ, (Mirabella at ASU), 6.00%, 10/1/37<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;900 | &nbsp;&nbsp;&nbsp;&nbsp; 677023 |
| Tulsa County Industrial Authority, OK, (Montereau, Inc.), 5.25%, 11/15/37 | 1000 | &nbsp;&nbsp;&nbsp;&nbsp; 1010361 |
| Washington Housing Finance Commission, (Bayview Manor Homes), 5.00%, 7/1/51<sup>(1)</sup> | 1335 | &nbsp;&nbsp;&nbsp;&nbsp; 1167981 |

---

---

| | | |
|:---|:---|:---|
| **<br>Security** | **Principal <br> Amount<br> (000's omitted)** | &nbsp;&nbsp;**Value** |
| Senior Living/Life Care (continued) | Senior Living/Life Care (continued) | Senior Living/Life Care (continued) |
| Washington Housing Finance Commission, (Transforming Age), 5.00%, 1/1/49<sup>(1)</sup> | $&nbsp;&nbsp;&nbsp;&nbsp;305 | &nbsp;&nbsp;$278740 |
| Wisconsin Health and Educational Facilities Authority, (Three Pillars Senior Living Communities), 5.75%, 8/15/54 | 1000 | &nbsp;&nbsp;&nbsp;&nbsp; 1020685 |
|  |  | &nbsp;&nbsp;**$36346006** |
| Special Tax Revenue — 10.4% | Special Tax Revenue — 10.4% | Special Tax Revenue — 10.4% |
| Aerotropolis Regional Transportation Authority, CO, 5.75%, 12/1/54<sup>(1)</sup> | $2150 | &nbsp;&nbsp;$2124401 |
| Atlanta Development Authority, GA, (Westside Gulch Area), 5.50%, 4/1/39<sup>(1)</sup> | 1640 | &nbsp;&nbsp;&nbsp;&nbsp; 1666280 |
| Lakewood Ranch Stewardship District, FL, (Villages of Lakewood Ranch South): |  |  |
| &nbsp;&nbsp;&nbsp;5.125%, 5/1/46 | 1000 | &nbsp;&nbsp;&nbsp;&nbsp; 999943 |
| &nbsp;&nbsp;&nbsp;6.00%, 5/1/56 | 2000 | &nbsp;&nbsp;&nbsp;&nbsp; 2041754 |
| Maryland Economic Development Corp., (Port Covington), 4.00%, 9/1/50 | &nbsp;&nbsp;&nbsp;&nbsp;140 | &nbsp;&nbsp;&nbsp;&nbsp; 116389 |
| Mida Mountain Village Public Infrastructure District, UT, 5.125%, 6/15/54<sup>(1)</sup> | 1190 | &nbsp;&nbsp;&nbsp;&nbsp; 1147451 |
| New York City Transitional Finance Authority, NY, Future Tax Revenue, 3.00%, 11/1/47 | 4205 | &nbsp;&nbsp;&nbsp;&nbsp; 3146830 |
| New York Dormitory Authority, Personal Income Tax Revenue, 5.50%, 3/15/53<sup>(2)</sup> | 2000 | &nbsp;&nbsp;&nbsp;&nbsp; 2170240 |
| New York State Urban Development Corp., Personal Income Tax Revenue, 5.00%, 3/15/44<sup>(2)</sup> | 6900 | &nbsp;&nbsp;&nbsp;&nbsp; 7113831 |
| Puerto Rico Sales Tax Financing Corp.: |  |  |
| &nbsp;&nbsp;&nbsp;0.00%, 7/1/51 | 2250 | &nbsp;&nbsp;&nbsp;&nbsp; 565982 |
| &nbsp;&nbsp;&nbsp;5.00%, 7/1/58 | 4015 | &nbsp;&nbsp;&nbsp;&nbsp; 3880871 |
| Washington Metropolitan Area Transit Authority, D.C., Sustainability Bonds, 5.25%, 7/15/59<sup>(2)</sup> | 4000 | &nbsp;&nbsp;&nbsp;&nbsp; 4211560 |
|  |  | &nbsp;&nbsp;**$29185532** |
| Transportation — 16.9% | Transportation — 16.9% | Transportation — 16.9% |
| Chicago, IL, (O'Hare International Airport), (AMT), 5.50%, 1/1/55<sup>(2)</sup> | $1500 | &nbsp;&nbsp;$1554090 |
| Massachusetts, (Rail Enhancement Program), Sustainability Bonds, 5.00%, 6/1/53<sup>(2)</sup> | 4000 | &nbsp;&nbsp;&nbsp;&nbsp; 4148480 |
| Metropolitan Transportation Authority, NY, Green Bonds, 5.25%, 11/15/55 | 1520 | &nbsp;&nbsp;&nbsp;&nbsp; 1550285 |
| Metropolitan Washington Airports Authority, D.C., (AMT), 4.00%, 10/1/51 | 2200 | &nbsp;&nbsp;&nbsp;&nbsp; 1931089 |
| New Jersey Economic Development Authority, (The Goethals Bridge Replacement), (AMT), 5.125%, 1/1/34 | &nbsp;&nbsp;&nbsp;&nbsp;995 | &nbsp;&nbsp;&nbsp;&nbsp; 996653 |
| New York Transportation Development Corp., (John F. Kennedy Airport Terminals 6 Redevelopment), Green Bonds, (AMT), 5.50%, 12/31/60 | 1980 | &nbsp;&nbsp;&nbsp;&nbsp; 2022520 |

---

*8*

*See Notes to Financial Statements.*

------

[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Portfolio of Investments (Unaudited) — continued

------

---

| | | |
|:---|:---|:---|
| **<br>Security** | **Principal <br> Amount<br> (000's omitted)** | &nbsp;&nbsp;**Value** |
| Transportation (continued) | Transportation (continued) | Transportation (continued) |
| New York Transportation Development Corp., (John F. Kennedy International Airport New Terminal One): |  |  |
| &nbsp;&nbsp;&nbsp;Green Bonds, (AMT), 5.375%, 6/30/60 | $1645 | &nbsp;&nbsp;$1629948 |
| &nbsp;&nbsp;&nbsp;Green Bonds, (AMT), 6.00%, 6/30/54 | &nbsp;&nbsp;&nbsp;&nbsp;770 | &nbsp;&nbsp;&nbsp;&nbsp; 802790 |
| New York Transportation Development Corp., (LaGuardia Airport Terminal B Redevelopment), (AMT), 5.25%, 1/1/50 | 2105 | &nbsp;&nbsp;&nbsp;&nbsp; 2104906 |
| New York Transportation Development Corp., (Terminal 4 John F. Kennedy International Airport), (AMT), 5.00%, 12/1/38 | 1950 | &nbsp;&nbsp;&nbsp;&nbsp; 2027640 |
| Public Finance Authority, WI, (Georgia SR 400 Express Lanes), (AMT), 5.75%, 6/30/60 | 3500 | &nbsp;&nbsp;&nbsp;&nbsp; 3601381 |
| San Francisco City and County Airport Commission, CA, (San Francisco International Airport), (AMT), 5.00%, 5/1/49 | 5990 | &nbsp;&nbsp;&nbsp;&nbsp; 6025121 |
| South Jersey Transportation Authority, NJ, 5.25%, 11/1/52 | 1000 | &nbsp;&nbsp;&nbsp;&nbsp; 1041955 |
| Texas Private Activity Bond Surface Transportation Corp., (North Tarrant Express Segment 3C), (AMT), 5.00%, 6/30/58 | 4000 | &nbsp;&nbsp;&nbsp;&nbsp; 3934282 |
| Texas Transportation Commission, (State Highway 249 System), 0.00%, 8/1/38 | &nbsp;&nbsp;&nbsp;&nbsp;850 | &nbsp;&nbsp;&nbsp;&nbsp; 476512 |
| Triborough Bridge and Tunnel Authority, NY, 5.00%, 11/15/51<sup>(2)</sup> | 8800 | &nbsp;&nbsp;&nbsp;&nbsp; 9002488 |
| Virginia Small Business Financing Authority, (95 Express Lanes, LLC), (AMT), 4.00%, 1/1/39 | &nbsp;&nbsp;&nbsp;&nbsp;955 | &nbsp;&nbsp;&nbsp;&nbsp; 919198 |
| Virginia Small Business Financing Authority, (Transform 66 P3): |  |  |
| &nbsp;&nbsp;&nbsp;(AMT), 5.00%, 12/31/49 | 2865 | &nbsp;&nbsp;&nbsp;&nbsp; 2806184 |
| &nbsp;&nbsp;&nbsp;(AMT), 5.00%, 12/31/52 | 1000 | &nbsp;&nbsp;&nbsp;&nbsp; 976349 |
|  |  | &nbsp;&nbsp;**$47551871** |
| Water and Sewer — 0.7% | Water and Sewer — 0.7% | Water and Sewer — 0.7% |
| New York City Municipal Water Finance Authority, NY, (Water and Sewer System), (SPA: JPMorgan Chase Bank, N.A.), 3.70%, 6/15/50<sup>(3)</sup> | $2000 | &nbsp;&nbsp;$2000000 |
|  |  | &nbsp;&nbsp;**$2000000** |
| Total Tax-Exempt Municipal Obligations<br> (identified cost $293,846,076) |  | &nbsp;&nbsp;**$301965245** |

---

Taxable Municipal Obligations — 4.4%

---

| | | |
|:---|:---|:---|
| **<br>Security** | **Principal <br> Amount<br> (000's omitted)** | &nbsp;&nbsp;**Value** |
| Education — 0.4% | Education — 0.4% | Education — 0.4% |
| Maricopa County Industrial Development Authority, AZ, (Grand Canyon University), 7.375%, 10/1/29<sup>(1)</sup> | $1000 | &nbsp;&nbsp;$1049536 |
|  |  | &nbsp;&nbsp;**$1049536** |
| General Obligations — 1.2% | General Obligations — 1.2% | General Obligations — 1.2% |
| Chicago, IL: |  |  |
| &nbsp;&nbsp;&nbsp;7.375%, 1/1/33 | $1562 | &nbsp;&nbsp;$1693983 |
| &nbsp;&nbsp;&nbsp;7.781%, 1/1/35 | 1395 | &nbsp;&nbsp;&nbsp;&nbsp; 1567063 |
|  |  | &nbsp;&nbsp;**$3261046** |
| Housing — 0.2% | Housing — 0.2% | Housing — 0.2% |
| New York State Housing Finance Agency, (160 Madison Avenue LLC), (LOC: Landesbank Hessen-Thuringen Girozentrale), 4.09%, 11/1/46<sup>(3)</sup> | $&nbsp;&nbsp;&nbsp;&nbsp;500 | &nbsp;&nbsp;$500000 |
|  |  | &nbsp;&nbsp;**$500000** |
| Insured - Education — 0.4% | Insured - Education — 0.4% | Insured - Education — 0.4% |
| Onondaga Civic Development Corp., NY, (Upstate Properties Development, Inc.), (BAM), 3.158%, 12/1/41 | $1610 | &nbsp;&nbsp;$1233806 |
|  |  | &nbsp;&nbsp;**$1233806** |
| Insured - Housing — 0.4% | Insured - Housing — 0.4% | Insured - Housing — 0.4% |
| Oregon Facilities Authority, (CHF-Ashland, LLC - Southern Oregon University), (AG), 3.508%, 7/1/41 | $1500 | &nbsp;&nbsp;$1198360 |
|  |  | &nbsp;&nbsp;**$1198360** |
| Insured - Transportation — 0.5% | Insured - Transportation — 0.5% | Insured - Transportation — 0.5% |
| Alameda Corridor Transportation Authority, CA, (AG), 0.00%, 10/1/45 | $4500 | &nbsp;&nbsp;$1318338 |
|  |  | &nbsp;&nbsp;**$1318338** |
| Lease Revenue/Certificates of Participation — 0.1% | Lease Revenue/Certificates of Participation — 0.1% | Lease Revenue/Certificates of Participation — 0.1% |
| National Finance Authority, NH, (Centurion BioSquare, Inc.), 9.58%, 12/15/38 | $&nbsp;&nbsp;&nbsp;&nbsp;140 | &nbsp;&nbsp;$142094 |
| National Finance Authority, NH, (Centurion Foundation), 11.00%, 12/15/38 | &nbsp;&nbsp;&nbsp;&nbsp;100 | &nbsp;&nbsp;&nbsp;&nbsp; 101422 |
|  |  | &nbsp;&nbsp;**$243516** |
| Special Tax Revenue — 0.8% | Special Tax Revenue — 0.8% | Special Tax Revenue — 0.8% |
| American Samoa Economic Development Authority, 3.72%, 9/1/27<sup>(1)</sup> | $&nbsp;&nbsp;&nbsp;&nbsp;735 | &nbsp;&nbsp;$706038 |

---

*9*

*See Notes to Financial Statements.*

------

[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Portfolio of Investments (Unaudited) — continued

------

---

| | | |
|:---|:---|:---|
| **<br>Security** | **Principal <br> Amount<br> (000's omitted)** | &nbsp;&nbsp;**Value** |
| Special Tax Revenue (continued) | Special Tax Revenue (continued) | Special Tax Revenue (continued) |
| Oneida Indian Nation of New York, 8.00%, 9/1/40<sup>(1)</sup> | $1500 | &nbsp;&nbsp;$1553060 |
|  |  | &nbsp;&nbsp;**$2259098** |
| Transportation — 0.4% | Transportation — 0.4% | Transportation — 0.4% |
| Maryland Economic Development Corp., (Seagirt Marine Terminal), 4.75%, 6/1/42 | $1500 | &nbsp;&nbsp;$1285860 |
|  |  | &nbsp;&nbsp;**$1285860** |
| Total Taxable Municipal Obligations<br> (identified cost $12,818,360) |  | &nbsp;&nbsp;**$12349560** |
| Total Investments — 112.9%<br> (identified cost $309,094,436) |  | &nbsp;&nbsp;**$316942606** |
| Other Assets, Less Liabilities — (12.9)% |  | &nbsp;&nbsp;**$(36117444)** |
| Net Assets — 100.0% |  | &nbsp;&nbsp;**$280825162** |

---

---

| | |
|:---|:---|
| The percentage shown for each investment category in the Portfolio of Investments is based on net assets. | The percentage shown for each investment category in the Portfolio of Investments is based on net assets. |
| <sup>(1)</sup> | Security exempt from registration under Rule 144A of the Securities Act of 1933, as amended. These securities may be sold in certain transactions in reliance on an exemption from registration (normally to qualified institutional buyers). At September 30, 2025, the aggregate value of these securities is $33,527,990 or 11.9% of the Trust's net assets. |
| <sup>(2)</sup> | Security represents the municipal bond held by a trust that issues residual interest bonds (see Note 1G). |
| <sup>(3)</sup> | Variable rate demand obligation that may be tendered at par on any day for payment the same or next business day. The stated interest rate, which generally resets daily, is determined by the remarketing agent and represents the rate in effect at September 30, 2025. |
| At September 30, 2025, the concentration of the Trust's investments in the various states and territories, determined as a percentage of total investments, is as follows: | At September 30, 2025, the concentration of the Trust's investments in the various states and territories, determined as a percentage of total investments, is as follows: |

---

---

| | |
|:---|:---|
| New York | 16.9% |
| Texas | 10.6% |
| Others, representing less than 10% individually | 71.7% |

---

The Trust invests primarily in debt securities issued by municipalities. The ability of the issuers of the debt securities to meet their obligations may be affected by economic developments in a specific industry or municipality. At September 30, 2025, 15.9% of total investments are backed by bond insurance of various financial institutions and financial guaranty assurance agencies. The aggregate percentage insured by an individual financial institution or financial guaranty assurance agency ranged from 2.0% to 13.9% of total investments.

---

| | |
|:---|:---|
| **Abbreviations:** | **Abbreviations:** |
| AG | – Assured Guaranty, Inc. |
| AMT | – Interest earned from these securities may be considered a tax preference item for purposes of the Federal Alternative Minimum Tax. |
| BAM | – Build America Mutual Assurance Co. |
| FHLMC | – Federal Home Loan Mortgage Corp. |
| FNMA | – Federal National Mortgage Association |
| GNMA | – Government National Mortgage Association |
| LOC | – Letter of Credit |
| PSF | – Permanent School Fund |
| SFMR | – Single Family Mortgage Revenue |
| SPA | – Standby Bond Purchase Agreement |

---

*10*

*See Notes to Financial Statements.*

------

[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Statement of Assets and Liabilities (Unaudited)

------

---

| | |
|:---|:---|
|  | &nbsp;&nbsp;&nbsp;**September 30, 2025** |
| Assets |  |
| Investments, at value (identified cost $309,094,436) | &nbsp;&nbsp;$316942606 |
| Cash | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;359115 |
| Interest receivable | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4288734 |
| Trustees' deferred compensation plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;58278 |
| **Total assets** | &nbsp;&nbsp;**$321648733** |
| Liabilities |  |
| Payable for floating rate notes issued | &nbsp;&nbsp;$40282652 |
| Payable to affiliates: |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Investment adviser and administrative fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;157160 |
| &nbsp;&nbsp;&nbsp;Trustees' deferred compensation plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;58278 |
| Interest expense and fees payable | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;216995 |
| Accrued expenses | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;108486 |
| **Total liabilities** | &nbsp;&nbsp;**$40823571** |
| **Net Assets** | &nbsp;&nbsp;**$280825162** |
| Sources of Net Assets |  |
| Common shares, $0.01 par value, unlimited number of shares authorized | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$156249 |
| Additional paid-in capital | &nbsp;&nbsp;&nbsp;&nbsp;298069380 |
| Accumulated loss | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(17400467) |
| **Net Assets** | &nbsp;&nbsp;**$280825162** |
| Common Shares Issued and Outstanding | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15624921 |
| Net Asset Value Per Common Share |  |
| **Net assets ÷ common shares issued and outstanding** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**$17.97** |

---

*See Notes to Financial Statements.*

------

[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Statement of Operations (Unaudited)

------

---

| | |
|:---|:---|
|  | &nbsp;&nbsp;&nbsp;**Six Months Ended** |
|  | &nbsp;&nbsp;&nbsp;**September 30, 2025** |
| Investment Income |  |
| Interest income | &nbsp;&nbsp;$7793404 |
| **Total investment income** | &nbsp;&nbsp;**$7793404** |
| Expenses |  |
| Investment adviser and administrative fee | &nbsp;&nbsp;&nbsp;&nbsp;$944693 |
| Trustees' fees and expenses | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10374 |
| Custodian fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29568 |
| Transfer and dividend disbursing agent fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9767 |
| Legal and accounting services | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;55105 |
| Printing and postage | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;43922 |
| Interest expense and fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;614895 |
| Miscellaneous | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39957 |
| **Total expenses** | &nbsp;&nbsp;**$1748281** |
| **Net investment income** | &nbsp;&nbsp;**$6045123** |
| Realized and Unrealized Gain (Loss) |  |
| Net realized gain (loss): |  |
| &nbsp;&nbsp;&nbsp;Investment transactions | &nbsp;&nbsp;$(2422422) |
| **Net realized loss** | &nbsp;&nbsp;**$(2422422)** |
| Change in unrealized appreciation (depreciation): |  |
| &nbsp;&nbsp;&nbsp;Investments | &nbsp;&nbsp;$2216762 |
| **Net change in unrealized appreciation (depreciation)** | &nbsp;&nbsp;**$2216762** |
| **Net realized and unrealized loss** | &nbsp;&nbsp;&nbsp;**$(205660)** |
| **Net increase in net assets from operations** | &nbsp;&nbsp;**$5839463** |

---

*12*

*See Notes to Financial Statements.*

------

[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Statements of Changes in Net Assets

------

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;**Six Months Ended<br> September 30, 2025<br> (Unaudited)** | &nbsp;&nbsp;&nbsp;**Year Ended<br> March 31, 2025** |
| Increase (Decrease) in Net Assets |  |  |
| From operations: |  |  |
| &nbsp;&nbsp;&nbsp;Net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$6045123 | &nbsp;&nbsp;$11952487 |
| &nbsp;&nbsp;&nbsp;Net realized loss | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2422422) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1068093) |
| &nbsp;&nbsp;&nbsp;Net change in unrealized appreciation (depreciation) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2216762 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(6010825) |
| **Net increase in net assets from operations** | &nbsp;&nbsp;&nbsp;&nbsp;**$5839463** | &nbsp;&nbsp;&nbsp;&nbsp;**$4873569** |
| **Distributions to shareholders** | &nbsp;&nbsp;&nbsp;**$(6403093)** | &nbsp;&nbsp;**$(12203214)** |
| **Tax return of capital to shareholders** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**$—\*** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**$(331098)** |
| **Net decrease in net assets** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**$(563630)** | &nbsp;&nbsp;&nbsp;**$(7660743)** |
| Net Assets |  |  |
| At beginning of period | &nbsp;&nbsp;$281388792 | &nbsp;&nbsp;$289049535 |
| **At end of period** | &nbsp;&nbsp;**$280825162** | &nbsp;&nbsp;**$281388792** |

---

\* A portion of the distributions may be deemed a tax return of capital at year-end. See Note 2.

*13*

*See Notes to Financial Statements.*

------

[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Statement of Cash Flows (Unaudited)

------

---

| | |
|:---|:---|
|  | &nbsp;&nbsp;&nbsp;**Six Months Ended** |
|  | &nbsp;&nbsp;&nbsp;**September 30, 2025** |
| Cash Flows From Operating Activities |  |
| Net increase in net assets from operations | &nbsp;&nbsp;&nbsp;$5839463 |
| Adjustments to reconcile net increase in net assets from operations to net cash provided by operating activities: |  |
| &nbsp;&nbsp;&nbsp;Investments purchased | &nbsp;&nbsp;&nbsp;&nbsp;(82261696) |
| &nbsp;&nbsp;&nbsp;Investments sold | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;82827422 |
| &nbsp;&nbsp;&nbsp;Net amortization/accretion of premium (discount) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(458060) |
| &nbsp;&nbsp;&nbsp;Decrease in interest receivable | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;174737 |
| &nbsp;&nbsp;&nbsp;Increase in Trustees' deferred compensation plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3469) |
| &nbsp;&nbsp;&nbsp;Decrease in payable to affiliates for investment adviser and administrative fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(8296) |
| &nbsp;&nbsp;&nbsp;Decrease in interest expense and fees payable | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(134617) |
| &nbsp;&nbsp;&nbsp;Increase in payable to affiliates for Trustees' deferred compensation plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3469 |
| &nbsp;&nbsp;&nbsp;Decrease in accrued expenses | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(30349) |
| &nbsp;&nbsp;&nbsp;Net change in unrealized (appreciation) depreciation from investments | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2216762) |
| &nbsp;&nbsp;&nbsp;Net realized loss from investments | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2422422 |
| **Net cash provided by operating activities** | &nbsp;&nbsp;&nbsp;**$6154264** |
| Cash Flows From Financing Activities |  |
| Cash distributions paid | &nbsp;&nbsp;$(6403093) |
| Proceeds from secured borrowings | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23280000 |
| Repayment of secured borrowings | &nbsp;&nbsp;&nbsp;&nbsp;(22700000) |
| **Net cash used in financing activities** | &nbsp;&nbsp;**$(5823093)** |
| **Net increase in cash** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**$331171** |
| **Cash at beginning of period** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**$27944** |
| **Cash at end of period** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**$359115** |
| Supplemental disclosure of cash flow information: |  |
| Cash paid for interest and fees on borrowings | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$749512 |

---

*14*

*See Notes to Financial Statements.*

------

[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Financial Highlights

------

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;**Six Months Ended<br> September 30, 2025<br> (Unaudited)** | &nbsp;&nbsp;&nbsp;**Year Ended March 31,** | &nbsp;&nbsp;&nbsp;**Year Ended March 31,** | &nbsp;&nbsp;&nbsp;**Year Ended March 31,** | &nbsp;&nbsp;&nbsp;**Year Ended March 31,** | &nbsp;&nbsp;&nbsp;**Year Ended March 31,** |
| | &nbsp;&nbsp;&nbsp;**Six Months Ended<br> September 30, 2025<br> (Unaudited)** | &nbsp;&nbsp;&nbsp;**2025** | &nbsp;&nbsp;&nbsp;**2024** | &nbsp;&nbsp;&nbsp;**2023** | &nbsp;&nbsp;&nbsp;**2022** | &nbsp;&nbsp;&nbsp;**2021** |
| Net asset value — Beginning of period | &nbsp;&nbsp;&nbsp;&nbsp;$18.01 | &nbsp;&nbsp;&nbsp;&nbsp;$18.50 | &nbsp;&nbsp;&nbsp;&nbsp;$18.32 | &nbsp;&nbsp;&nbsp;&nbsp;$20.07 | &nbsp;&nbsp;&nbsp;&nbsp;$21.73 | &nbsp;&nbsp;&nbsp;&nbsp;$20.53 |
| Income (Loss) From Operations |  |  |  |  |  |  |
| Net investment income<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.78 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.02) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.72) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.65) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.18 |
| **Total income (loss) from operations** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**$0.37** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**$0.31** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**$0.93** | &nbsp;&nbsp;&nbsp;&nbsp;**$(1.00)** | &nbsp;&nbsp;&nbsp;&nbsp;**$(0.92)** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**$1.96** |
| Less Distributions |  |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.41)\* | &nbsp;&nbsp;&nbsp;&nbsp;$(0.78) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.75) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.75) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.75) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.76) |
| Tax return of capital | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.02) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— |
| **Total distributions** | &nbsp;&nbsp;&nbsp;&nbsp;**$(0.41)** | &nbsp;&nbsp;&nbsp;&nbsp;**$(0.80)** | &nbsp;&nbsp;&nbsp;&nbsp;**$(0.75)** | &nbsp;&nbsp;&nbsp;&nbsp;**$(0.75)** | &nbsp;&nbsp;&nbsp;&nbsp;**$(0.75)** | &nbsp;&nbsp;&nbsp;&nbsp;**$(0.76)** |
| **Premium from common shares sold through shelf offering (see Note 5)<sup>(1)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**$—** | &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;**$—** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**$0.01** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**$0.00<sup>(2)</sup>** |
| **Net asset value — End of period** | &nbsp;&nbsp;&nbsp;&nbsp;**$17.97** | &nbsp;&nbsp;&nbsp;&nbsp;**$18.01** | &nbsp;&nbsp;&nbsp;&nbsp;**$18.50** | &nbsp;&nbsp;&nbsp;&nbsp;**$18.32** | &nbsp;&nbsp;&nbsp;&nbsp;**$20.07** | &nbsp;&nbsp;&nbsp;&nbsp;**$21.73** |
| **Market value — End of period** | &nbsp;&nbsp;&nbsp;&nbsp;**$16.64** | &nbsp;&nbsp;&nbsp;&nbsp;**$16.65** | &nbsp;&nbsp;&nbsp;&nbsp;**$16.59** | &nbsp;&nbsp;&nbsp;&nbsp;**$17.67** | &nbsp;&nbsp;&nbsp;&nbsp;**$19.05** | &nbsp;&nbsp;&nbsp;&nbsp;**$22.50** |
| **Total Investment Return on Net Asset Value<sup>(3)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2.28% <sup>(4)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2.02%** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**5.60%** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(4.73)%** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(4.36)%** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**9.87%** |
| **Total Investment Return on Market Value<sup>(3)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2.45% <sup>(4)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**5.17%** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(1.82)%** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(3.19)%** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(12.33)%** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**19.77%** |
| Ratios/Supplemental Data |  |  |  |  |  |  |
| Net assets, end of period (000's omitted) | &nbsp;&nbsp;$280825 | &nbsp;&nbsp;$281389 | &nbsp;&nbsp;$289050 | &nbsp;&nbsp;$286208 | &nbsp;&nbsp;$313625 | &nbsp;&nbsp;$333178 |
| Ratios (as a percentage of average daily net assets):<sup>(5)</sup> |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Expenses excluding interest and fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.82% <sup>(6)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.81% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.80% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.77% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.73% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.73% |
| &nbsp;&nbsp;&nbsp;Interest and fee expense<sup>(7)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.45% <sup>(6)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.51% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.62% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.32% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.06% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.05% |
| &nbsp;&nbsp;&nbsp;Total expenses | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.27% <sup>(6)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.32% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.42% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.09% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.79% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.78% |
| &nbsp;&nbsp;&nbsp;Net expenses | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.27% <sup>(6)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.32% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.42% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.09% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.79% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.78% |
| &nbsp;&nbsp;&nbsp;Net investment income | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.40% <sup>(6)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.13% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.13% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.92% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.35% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.67% |
| Portfolio Turnover | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25% <sup>(4)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;45% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13% |

---

<sup>(1)</sup> Computed using average shares outstanding.

<sup>(2)</sup> Amount is less than $0.005.

<sup>(3)</sup> Returns are historical and are calculated by determining the percentage change in net asset value or market value with all distributions reinvested. Distributions are assumed to be reinvested at prices obtained under the Trust's dividend reinvestment plan.

<sup>(4)</sup> Not annualized.

<sup>(5)</sup> Total expenses do not reflect amounts reimbursed and/or waived by the adviser and administrator and certain of its affiliates, if applicable. Net expenses are net of all reductions and represent the net expenses paid by the Trust.

<sup>(6)</sup> Annualized.

<sup>(7)</sup> Interest and fee expense relates to the liability for floating rate notes issued in conjunction with residual interest bond transactions (see Note 1G).

\* A portion of the distributions may be deemed a tax return of capital at year-end. See Note 2.

*See Notes to Financial Statements.*

------

[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Notes to Financial Statements (Unaudited)

------

1 Significant Accounting Policies

Eaton Vance National Municipal Opportunities Trust (the Trust) is a Massachusetts business trust registered under the Investment Company Act of 1940, as amended (the 1940 Act), as a diversified, closed-end management investment company. The Trust's primary investment objective is to provide current income exempt from regular federal income tax. The Trust will, as a secondary investment objective, seek to achieve capital appreciation.

The following is a summary of significant accounting policies of the Trust. The policies are in conformity with accounting principles generally accepted in the United States of America (U.S. GAAP). The Trust is an investment company and follows accounting and reporting guidance in the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946.

A Investment Valuation—The following methodologies are used to determine the market value or fair value of investments.

**Debt Obligations. Debt obligations are generally valued on the basis of valuations provided by third party pricing services, as derived from such services' pricing models. Inputs to the models may include, but are not limited to, reported trades, executable bid and ask prices, broker/dealer quotations, prices or yields of securities with similar characteristics, interest rates, anticipated prepayments, benchmark curves or information pertaining to the issuer, as well as industry and economic events. The pricing services may use a matrix approach, which considers information regarding securities with similar characteristics to determine the valuation for a security. Short-term debt obligations purchased with a remaining maturity of sixty days or less for which a valuation from a third party pricing service is not readily available may be valued at amortized cost, which approximates fair value.**

**Fair Valuation. In connection with Rule 2a-5 of the 1940 Act, the Trustees have designated the Trust's investment adviser as its valuation designee. Investments for which valuations or market quotations are not readily available or are deemed unreliable are valued by the investment adviser, as valuation designee, at fair value using methods that most fairly reflect the security's "fair value", which is the amount that the Trust might reasonably expect to receive for the security upon its current sale in the ordinary course. Each such determination is based on a consideration of relevant factors, which are likely to vary from one pricing context to another. These factors may include, but are not limited to, the type of security, the existence of any contractual restrictions on the security's disposition, the price and extent of public trading in similar securities of the issuer or of comparable companies or entities, quotations or relevant information obtained from broker/dealers or other market participants, information obtained from the issuer, analysts, and/or the appropriate stock exchange (for exchange-traded securities), an analysis of the company's or entity's financial statements, and an evaluation of the forces that influence the issuer and the market(s) in which the security is purchased and sold.**

B Investment Transactions and Related Income—Investment transactions for financial statement purposes are accounted for on a trade date basis. Realized gains and losses on investments sold are determined on the basis of identified cost. Interest income is recorded on the basis of interest accrued, adjusted for amortization of premium or accretion of discount.

C Federal Taxes—The Trust's policy is to comply with the provisions of the Internal Revenue Code applicable to regulated investment companies and to distribute to shareholders each year substantially all of its taxable, if any, and tax-exempt net investment income, and all or substantially all of its net realized capital gains. Accordingly, no provision for federal income or excise tax is necessary. The Trust intends to satisfy conditions which will enable it to designate distributions from the interest income generated by its investments in non-taxable municipal securities, which are exempt from regular federal income tax when received by the Trust, as exempt-interest dividends. The portion of such interest, if any, earned on private activity bonds issued after August 7, 1986, may be considered a tax preference item to shareholders.

As of September 30, 2025, the Trust had no uncertain tax positions that would require financial statement recognition, de-recognition, or disclosure. The Trust files a U.S. federal income tax return annually after its fiscal year-end, which is subject to examination by the Internal Revenue Service for a period of three years from the date of filing.

D Legal Fees— Legal fees and other related expenses incurred as part of negotiations of the terms and requirement of capital infusions, or that are expected to result in the restructuring of, or a plan of reorganization for, an investment are recorded as realized losses. Ongoing expenditures to protect or enhance an investment are treated as operating expenses.

E Use of Estimates—The preparation of the financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of income and expense during the reporting period. Actual results could differ from those estimates.

F Indemnifications—Under the Trust's organizational documents, its officers and Trustees may be indemnified against certain liabilities and expenses arising out of the performance of their duties to the Trust. Under Massachusetts law, if certain conditions prevail, shareholders of a Massachusetts business trust (such as the Trust) could be deemed to have personal liability for the obligations of the Trust. However, the Trust's Declaration of Trust contains an express disclaimer of liability on the part of Trust shareholders and the By-laws provide that the Trust shall assume, upon request by the shareholder, the defense on behalf of any Trust shareholders. Moreover, the By-laws also provide for indemnification out of Trust property of any shareholder held personally liable solely by reason of being or having been a shareholder for all loss or expense arising from such liability. Additionally, in the normal course of business, the Trust enters into agreements with service providers that may contain indemnification clauses. The Trust's maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the Trust that have not yet occurred.

------

[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Notes to Financial Statements (Unaudited) — continued

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G Floating Rate Notes Issued in Conjunction with Securities Held—The Trust may invest in residual interest bonds, also referred to as inverse floating rate securities, whereby the Trust may sell a variable or fixed rate bond for cash to a Special-Purpose Vehicle (the SPV), (which is generally organized as a trust), while at the same time, buying a residual interest in the assets and cash flows of the SPV. The bond is deposited into the SPV with the same CUSIP number as the bond sold to the SPV by the Trust, and which may have been, but is not required to be, the bond purchased from the Trust (the Bond). The SPV also issues floating rate notes (Floating Rate Notes) which are sold to third-parties. The residual interest bond held by the Trust gives the Trust the right (1) to cause the holders of the Floating Rate Notes to generally tender their notes at par, and (2) to have the Bond held by the SPV transferred to the Trust, thereby terminating the SPV. Should the Trust exercise such right, it would generally pay the SPV the par amount due on the Floating Rate Notes and exchange the residual interest bond for the underlying Bond. Pursuant to generally accepted accounting principles for transfers and servicing of financial assets and extinguishment of liabilities, the Trust accounts for the transaction described above as a secured borrowing by including the Bond in its Portfolio of Investments and the Floating Rate Notes as a liability under the caption "Payable for floating rate notes issued" in its Statement of Assets and Liabilities. The Floating Rate Notes have interest rates that generally reset weekly and their holders have the option to tender their notes to the SPV for redemption at par at each reset date. Accordingly, the fair value of the payable for floating rate notes issued approximates its carrying value. If measured at fair value, the payable for floating rate notes would have been considered as Level 2 in the fair value hierarchy (see Note 6) at September 30, 2025. Interest expense related to the Trust's liability with respect to Floating Rate Notes is recorded as incurred. The SPV may be terminated by the Trust, as noted above, or by the occurrence of certain termination events as defined in the trust agreement, such as a downgrade in the credit quality of the underlying Bond, bankruptcy of or payment failure by the issuer of the underlying Bond, the inability to remarket Floating Rate Notes that have been tendered due to insufficient buyers in the market, or the failure by the SPV to obtain renewal of the liquidity agreement under which liquidity support is provided for the Floating Rate Notes up to one year. At September 30, 2025 the amount of the Trust's Floating Rate Notes outstanding and the related collateral were $40,282,652 and $52,730,822, respectively. The range of interest rates on the Floating Rate Notes outstanding at September 30, 2025 was 2.92% to 3.11%. For the six months ended September 30, 2025, the Trust's average settled Floating Rate Notes outstanding and the average interest rate (annualized) including fees were $38,484,262 and 3.19%, respectively.

In certain circumstances, the Trust may enter into shortfall and forbearance agreements with brokers by which the Trust agrees to reimburse the broker for the difference between the liquidation value of the Bond held by the SPV and the liquidation value of the Floating Rate Notes, as well as any shortfalls in interest cash flows. The Trust had no shortfalls as of September 30, 2025.

The Trust may also purchase residual interest bonds in a secondary market transaction without first owning the underlying bond. Such transactions are not required to be treated as secured borrowings. Shortfall agreements, if any, related to residual interest bonds purchased in a secondary market transaction are disclosed in the Portfolio of Investments.

The Trust's investment policies and restrictions expressly permit investments in residual interest bonds. Such bonds typically offer the potential for yields exceeding the yields available on fixed rate bonds with comparable credit quality and maturity. These securities tend to underperform the market for fixed rate bonds in a rising long-term interest rate environment, but tend to outperform the market for fixed rate bonds when long-term interest rates decline. The value and income of residual interest bonds are generally more volatile than that of a fixed rate bond. The Trust's investment policies do not allow the Trust to borrow money except as permitted by the 1940 Act. Effective August 19, 2022, the Trust began operating under Rule 18f-4 under the 1940 Act, which, among other things, governs the use of derivative investments and certain financing transactions by registered investment companies. Consistent with Rule 18f-4, the Trust may treat its investments in residual interest bonds and similar financing transactions as subject to the asset coverage requirements of Section 18 of the 1940 Act, or as derivatives transactions subject to the Trust's value-at-risk (VaR)-based limits on leverage risk. Effective October 11, 2023, the Trust has opted to treat such investments as derivatives transactions. The Trust may change this approach at any time. Residual interest bonds held by the Trust are securities exempt from registration under Rule 144A of the Securities Act of 1933.

H Segment Reporting—FASB Accounting Standards Update No. 2023-07, *Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures* (ASU 2023-07), requires incremental disclosures related to a public entity's reportable segments. The Trust operates as a single reportable segment, an investment company whose investment objective(s) is included in Note 1. In connection with ASU 2023-07, the Trust's President acts as the Trust's Chief Operating Decision Maker (CODM), who is responsible for assessing the performance of the Trust's single segment and deciding how to allocate the segment's resources. To perform this function, the CODM reviews the information in the Trust's financial statements.

I Interim Financial Statements—The interim financial statements relating to September 30, 2025 and for the six months then ended have not been audited by an independent registered public accounting firm, but in the opinion of the Trust's management, reflect all adjustments, consisting only of normal recurring adjustments, necessary for the fair presentation of the financial statements.

2 Distributions to Shareholders and Income Tax Information

The Trust intends to make monthly distributions of net investment income to common shareholders. In addition, at least annually, the Trust intends to distribute all or substantially all of its net realized capital gains. Distributions are recorded on the ex-dividend date. Distributions to shareholders are determined in accordance with income tax regulations, which may differ from U.S. GAAP. As required by U.S. GAAP, only distributions in excess of tax basis earnings and profits are reported in the financial statements as a return of capital. Permanent differences between book and tax accounting relating to distributions are reclassified to paid-in capital. For tax purposes, distributions from short-term capital gains are considered to be from ordinary income.

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Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Notes to Financial Statements (Unaudited) — continued

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At March 31, 2025, the Trust, for federal income tax purposes, had deferred capital losses of $23,777,084 which would reduce its taxable income arising from future net realized gains on investment transactions, if any, to the extent permitted by the Internal Revenue Code, and thus would reduce the amount of distributions to shareholders, which would otherwise be necessary to relieve the Trust of any liability for federal income or excise tax. The deferred capital losses are treated as arising on the first day of the Trust's next taxable year and retain the same short-term or long-term character as when originally deferred. Of the deferred capital losses at March 31, 2025, $9,036,472 are short-term and $14,740,612 are long-term.

The cost and unrealized appreciation (depreciation) of investments of the Trust at September 30, 2025, as determined on a federal income tax basis, were as follows:

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| | |
|:---|:---|
| **Aggregate cost** | &nbsp;&nbsp;**$267610312** |
| Gross unrealized appreciation | &nbsp;&nbsp;$15439032 |
| Gross unrealized depreciation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(6389390) |
| **Net unrealized appreciation** | &nbsp;&nbsp;&nbsp;&nbsp;**$9049642** |

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3 Investment Adviser and Administrative Fee and Other Transactions with Affiliates

The investment adviser and administrative fee is earned by Eaton Vance Management (EVM), an indirect, wholly-owned subsidiary of Morgan Stanley, as compensation for investment advisory and administrative services rendered to the Trust. The fee is computed at an annual rate as a percentage of the Trust's average daily gross assets as follows and is payable monthly:

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| | |
|:---|:---|
| **Average Daily Gross Assets** | &nbsp;&nbsp;&nbsp;&nbsp;**Annual Fee Rate** |
| Up to and including $1.5 billion | &nbsp;&nbsp;&nbsp;&nbsp;0.60% |
| Over $1.5 billion | &nbsp;&nbsp;&nbsp;&nbsp;0.59% |

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Gross assets, as defined in the Trust's investment advisory and administrative agreement with EVM, means total assets of the Trust, including any form of investment leverage, minus all accrued expenses incurred in the normal course of operations, but not excluding any liabilities or obligations attributable to investment leverage obtained through (i) indebtedness of any type (including, without limitation, borrowing through a credit facility or the issuance of debt securities), (ii) the issuance of preferred stock or other similar preference securities, (iii) the reinvestment of collateral received for securities loaned in accordance with the Trust's investment objectives and policies, and/or (iv) any other means. For purposes of this calculation, gross assets represent net assets plus the amount payable by the Trust to floating-rate note holders. For the six months ended September 30, 2025, the investment adviser and administrative fee incurred by the Trust and the effective annual rate, as a percentage of average daily gross assets, were $944,693 and 0.60%, respectively.

Trustees and officers of the Trust who are members of EVM's organization receive remuneration for their services to the Trust out of the investment adviser and administrative fee. Trustees of the Trust who are not affiliated with the investment adviser may elect to defer receipt of all or a percentage of their annual fees in accordance with the terms of the Trustees Deferred Compensation Plan. Certain officers and Trustees of the Trust are officers of EVM.

4 Purchases and Sales of Investments

Purchases and sales of investments, other than short-term obligations, aggregated $79,725,901 and $82,822,422, respectively, for the six months ended September 30, 2025.

5 Common Shares of Beneficial Interest and Shelf Offering

The Trust may issue common shares pursuant to its dividend reinvestment plan. There were no common shares issued by the Trust for the six months ended September 30, 2025 and the year ended March 31, 2025.

In November 2013, the Board of Trustees initially approved a share repurchase program for the Trust. Pursuant to the reauthorization of the share repurchase program by the Board of Trustees in March 2019, the Trust is authorized to repurchase up to 10% of its common shares outstanding as of the last day of the prior calendar year at market prices when shares are trading at a discount to net asset value. The share repurchase program does not obligate the Trust to purchase a specific amount of shares. There were no repurchases of common shares by the Trust for the six months ended September 30, 2025 and the year ended March 31, 2025.

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Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Notes to Financial Statements (Unaudited) — continued

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Pursuant to a registration statement filed with the SEC, the Trust is authorized to issue up to an additional 1,908,750 common shares through an equity shelf offering program (the "shelf offering"). Under the shelf offering, the Trust, subject to market conditions, may raise additional capital from time to time and in varying amounts and offering methods at a net price at or above the Trust's net asset value per common share. During the six months ended September 30, 2025 and the year ended March 31, 2025, there were no shares sold by the Trust pursuant to its shelf offering.

6 Fair Value Measurements

Under generally accepted accounting principles for fair value measurements, a three-tier hierarchy to prioritize the assumptions, referred to as inputs, is used in valuation techniques to measure fair value. The three-tier hierarchy of inputs is summarized in the three broad levels listed below.

• Level 1 – 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 a fund's own assumptions in determining the fair value of investments)

In cases where the inputs used to measure fair value fall in different levels of the fair value hierarchy, the level disclosed is determined based on the lowest level input that is significant to the fair value measurement in its entirety. The inputs or methodology used for valuing securities are not necessarily an indication of the risk associated with investing in those securities.

At September 30, 2025, the hierarchy of inputs used in valuing the Trust's investments, which are carried at fair value, were as follows:

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| | | | | |
|:---|:---|:---|:---|:---|
| **Asset Description** | &nbsp;&nbsp;**Level 1** | &nbsp;&nbsp;&nbsp;&nbsp;**Level 2** | &nbsp;&nbsp;&nbsp;&nbsp;**Level 3** | &nbsp;&nbsp;&nbsp;&nbsp;**Total** |
| Corporate Bonds | &nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;&nbsp;$2627801 | &nbsp;&nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;&nbsp;$2627801 |
| Tax-Exempt Municipal Obligations | &nbsp;&nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;301965245 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;301965245 |
| Taxable Municipal Obligations | &nbsp;&nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 12349560 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 12349560 |
| **Total Investments** | &nbsp;&nbsp;**$—** | &nbsp;&nbsp;&nbsp;&nbsp;**$316942606** | &nbsp;&nbsp;&nbsp;&nbsp;**$—** | &nbsp;&nbsp;&nbsp;&nbsp;**$316942606** |

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Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Board of Trustees' Contract Approval

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Overview of the Contract Review Process

The Investment Company Act of 1940, as amended (the "1940 Act"), provides, in substance, that the investment advisory agreement between a fund and its investment adviser will continue in effect from year-to-year only if its continuation is approved on an annual basis by a vote of the fund's board of trustees, including a majority of the trustees who are not "interested persons" of the fund ("independent trustees"), cast in person at a meeting called for the purpose of considering such approval.

At a meeting held on June 12, 2025, the Boards of Trustees/Directors (collectively, the "Board") that oversee the registered investment companies advised by Eaton Vance Management or its affiliate, Boston Management and Research (the "Eaton Vance Funds"), including a majority of the independent trustees (the "Independent Trustees"), voted to approve the continuation of existing investment advisory agreements and sub-advisory agreements<sup>1</sup> for each of the Eaton Vance Funds for an additional one-year period. The Board relied upon the affirmative recommendation of its Contract Review Committee, which is a committee comprised of all of the Independent Trustees. Prior to making its recommendation, the Contract Review Committee reviewed information furnished by the adviser and sub-adviser to each of the Eaton Vance Funds (including information specifically requested by the Board) for a series of meetings held between April and June 2025, as well as certain additional information provided in response to specific requests from the Independent Trustees as members of the Contract Review Committee. Members of the Contract Review Committee also considered information received at prior meetings of the Board and its committees, to the extent such information was relevant to the Contract Review Committee's annual evaluation of the investment advisory agreements and sub-advisory agreements.

In connection with its evaluation of the investment advisory agreements and sub-advisory agreements, the Board (directly or through one or more of its committees) considered various information relating to the Eaton Vance Funds. This included information applicable to all or groups of the Eaton Vance Funds, which is referenced immediately below, and information applicable to the particular Eaton Vance Fund covered by this report (each Eaton Vance Fund is referred to below as a "fund"). (For funds that invest through one or more underlying portfolios, references to "each fund" in this section may include information that was considered at the portfolio-level.)

*Information about Fees, Performance and Expenses*

• A report from an independent data provider comparing advisory and other fees paid by each fund to such fees paid by comparable funds, as identified by the independent data provider ("comparable funds");

• A report from an independent data provider comparing each fund's total expense ratio (and its components) to those of comparable funds;

• A report from an independent data provider comparing the investment performance of each fund to the investment performance of comparable funds and, as applicable, benchmark indices, over various time periods;

• In certain instances, data regarding investment performance relative to customized groups of peer funds and blended indices identified by the adviser in consultation with the Portfolio Management Committee of the Board (a committee exclusively comprised of Independent Trustees);

• Comparative information concerning the fees charged and services provided by the adviser and sub-adviser to each fund in managing other accounts (which may include other funds, collective investment trusts and institutional accounts) with the same or substantially similar investment objective as the fund and with a significant overlap in holdings based on criteria set by the Board, if any;

• Profitability analyses on a fund-by-fund basis for the adviser and its affiliates and for each sub-adviser not affiliated with the adviser;

*Information about Portfolio Management and Trading*

• Descriptions of the investment management services provided to each fund, as well as each of the funds' investment strategies and policies;

• The procedures and processes used by the adviser to determine the value of fund assets, including, when necessary, the determination of "fair value" by the adviser in its role as each fund's valuation designee and actions taken to monitor and test the effectiveness of such procedures and processes;

• Information about the policies and practices of each fund's adviser and sub-adviser with respect to trading, including their processes for seeking best execution of portfolio transactions;

• Information about the allocation of brokerage transactions and the benefits, if any, received by the adviser and sub-adviser to each fund as a result of brokerage allocation, including, as applicable, information concerning the acquisition of research through client commission arrangements and policies with respect to "soft dollars";

• Data relating to the portfolio turnover rate of each fund and related information regarding active management in the context of particular strategies;

*Information about each Adviser and Sub-Adviser*

• Reports regarding the financial results and condition of the adviser and certain of its affiliates and of each sub-adviser not affiliated with the adviser;

<sup>1</sup> Not all Eaton Vance Funds have entered into a sub-advisory agreement with a sub-adviser. Accordingly, references to "sub-adviser" or "sub-advisory agreement" in this "Overview" section may not be applicable to the particular Eaton Vance Fund covered by this report. Eaton Vance Management and Boston Management and Research are referred to collectively as the "adviser."

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Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Board of Trustees' Contract Approval — continued

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• Information regarding the individual investment professionals whose responsibilities include portfolio management and investment research for the funds, and, for portfolio managers and certain other investment professionals, information relating to their responsibilities with respect to managing other funds and investment accounts, as applicable;

• Information regarding the adviser's and its parent company's (Morgan Stanley's) efforts to retain and attract talented investment professionals, including in the context of a competitive marketplace for talent;

• Information regarding the adviser's compensation methodology for its investment professionals and the incentives and accountability it creates, along with investment professionals' investments in the fund(s) they manage;

• The personal trading codes of ethics of the adviser and its affiliates and the sub-adviser of each fund, together with information relating to compliance with, and the administration of, such codes;

• Policies and procedures relating to proxy voting, including regular reporting with respect to fund proxy voting activities;

• Information regarding the handling of corporate actions and class actions, as well as information regarding litigation and other regulatory matters;

• Information concerning the resources devoted to compliance efforts undertaken by the adviser and its affiliates and the sub-adviser of each fund, including descriptions of their various compliance programs and their record of compliance and remediation;

• Information concerning the business continuity and disaster recovery plans of the adviser and its affiliates and the sub-adviser of each fund;

• A description of the adviser's oversight of sub-advisers, including with respect to regulatory and compliance issues, investment management and other matters, if any;

*Other Relevant Information*

• Information regarding ongoing initiatives to further integrate and harmonize, where applicable, the investment management and other departments of the adviser and its affiliates with the overall investment management infrastructure of Morgan Stanley, in light of Morgan Stanley's acquisition of Eaton Vance Corp. on March 1, 2021;

• Information concerning the nature, cost, and character of the administrative and other non-investment advisory services provided by the adviser and its affiliates;

• Information concerning oversight of the relationship with the custodian, subcustodians, fund accountants, and other third-party service providers by the adviser and/or administrator to each of the funds;

• Information concerning efforts to maintain policies and procedures with respect to various regulations applicable to the funds, including, without limitation, Rule 22e-4 (the Liquidity Risk Management Rule), Rule 12d1-4 (the Fund-of-Funds Rule), Rule 18f-4 (the Derivatives Rule), and Rule 2a-5 (the Fair Valuation Rule);

• For the Eaton Vance Fund structured as an interval fund, information regarding the interval fund's periodic repurchase offers under Rule 23c-3 and related policies and procedures;

• For each Eaton Vance Fund structured as an exchange-listed closed-end fund, information concerning the benefits of the closed-end fund structure, as well as, where relevant, the closed-end fund's market prices (including as compared to the closed-end fund's net asset value (NAV)), trading volume data, continued use of auction preferred shares (where applicable), distribution rates, and other relevant matters;

• The risks that the adviser and/or its affiliates incur in connection with the management and operation of the funds, including, among others, litigation, regulatory, entrepreneurial, data privacy and cybersecurity, and other business risks (and the associated costs of such risks, if any); and

• The terms of each investment advisory agreement and sub-advisory agreement.

During the various meetings of the Board and its committees over the course of the year leading up to the June 12, 2025 meeting, the Board and its committees received information from portfolio managers and other investment professionals of the adviser and sub-advisers of the funds regarding investment and performance matters, and considered various investment and trading strategies used in pursuing the funds' investment objectives. The Board and its committees also received information regarding risk management techniques employed in connection with the management of the funds. The Board and its committees evaluated issues pertaining to industry and regulatory developments, compliance procedures, fund governance, and other issues with respect to the funds, and received and participated in reports and presentations provided by the adviser, sub-advisers, and certain other service providers, with respect to such matters. In addition to the formal meetings of the Board and its committees, the Independent Trustees met in executive sessions and held regular video or telephone conferences to discuss, among other topics, matters relating to the continuation of investment advisory agreements and sub-advisory agreements.

Each of the Contract Review Committee and the Board was advised throughout the contract review process by Kirkland & Ellis LLP, independent legal counsel for the Independent Trustees. The members of the Contract Review Committee and the members of the Board, with the advice of such counsel, exercised their own business judgment in determining the material factors to be considered in evaluating each investment advisory agreement and sub-advisory agreement and the weight to be given to each such factor. The conclusions reached with respect to each investment advisory agreement and sub-advisory agreement were based on a comprehensive evaluation of all the information provided and not any single factor. Moreover, each member of the Contract Review Committee and Board may have placed varying emphasis on particular factors in reaching conclusions with respect to each investment advisory agreement and sub-advisory agreement. In evaluating each investment advisory agreement and sub-advisory agreement, including the fee structures and other terms contained in such agreements, the members of the Contract Review Committee and Board were also informed by multiple years of analysis and discussion with the adviser and sub-adviser to each of the Eaton Vance Funds.

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Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Board of Trustees' Contract Approval — continued

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Results of the Contract Review Process

Based on its consideration of the foregoing, and such other information it deemed relevant, including the factors and conclusions described below, the Contract Review Committee concluded that the continuation of the investment advisory and administrative agreement between Eaton Vance National Municipal Opportunities Trust (the "Fund") and Eaton Vance Management (the "Adviser"), including its fee structure, is in the interests of shareholders and, therefore, recommended to the Board approval of the agreement. Based on the recommendation of the Contract Review Committee, the Board, including a majority of the Independent Trustees, voted to approve continuation of the investment advisory and administrative agreement for the Fund.

*Nature, Extent and Quality of Services*

In considering whether to approve the investment advisory and administrative agreement for the Fund, the Board evaluated the nature, extent and quality of services provided to the Fund by the Adviser.

The Board considered the Adviser's management capabilities and investment processes in light of the types of investments held by the Fund, including the education and experience of the investment professionals who provide services to the Fund. In particular, the Board considered, where relevant, the abilities and experience of the Adviser's investment professionals in analyzing factors such as credit risk, tax efficiency and special considerations relevant to investing in municipal obligations, Treasury securities and other securities backed by the U.S. government or its agencies. The Board considered the Adviser's municipal bond team, which includes investment professionals and credit specialists who provide services to the Fund. The Board also took into account the resources dedicated to portfolio management and other services, the compensation methods of the Adviser and other factors, including the reputation and resources of the Adviser to recruit and retain highly qualified research, advisory and supervisory investment professionals. In addition, the Board considered the time and attention devoted to the Eaton Vance Funds, including the Fund, by senior management, as well as the infrastructure, operational capabilities and support staff in place to assist in the portfolio management and operations of the Fund, including the provision of administrative services. The Board also considered the business-related and other risks to which the Adviser or its affiliates may be subject in managing the Fund. The Board considered the deep experience of the Adviser and its affiliates with managing and operating funds organized as exchange-listed closed-end funds, such as the Fund. In this regard, the Board considered, among other things, the Adviser's and its affiliates' experience with implementing leverage arrangements, monitoring and assessing trading price discounts and premiums and adhering to the requirements of securities exchanges.

The Board considered the compliance programs of the Adviser and relevant affiliates thereof. The Board considered compliance and reporting matters regarding, among other things, personal trading by investment professionals, disclosure of portfolio holdings, compliance with policies and procedures, portfolio valuation, business continuity and the allocation of investment opportunities. The Board also considered relevant examinations of the Adviser and its affiliates by regulatory authorities, such as the Securities and Exchange Commission and the Financial Industry Regulatory Authority.

The Board considered other administrative services provided or overseen by Eaton Vance Management and its affiliates, including transfer agency and accounting services. The Board evaluated the benefits to shareholders of investing in a fund that is a part of a large fund complex offering exposure to a variety of asset classes and investment disciplines.

After consideration of the foregoing factors, among others, the Board concluded that the nature, extent and quality of services provided by the Adviser, taken as a whole, are appropriate and consistent with the terms of the investment advisory and administrative agreement.

*Fund Performance*

The Board compared the Fund's investment performance to that of comparable funds identified by an independent data provider (the peer group), as well as an appropriate benchmark index, and assessed the Fund's performance on the basis of total return and current income return. The Board's review included comparative performance data with respect to the Fund for the one-, three-, five- and ten-year periods ended December 31, 2024. The Board considered, among other things, the Adviser's efforts to generate competitive levels of tax-exempt current income over time. In this regard, the Board noted that the performance of the Fund was higher than the median performance of the Fund's peer group for the three-year period. The Board also noted that the performance of the Fund was lower than its primary performance benchmark index for the three-year period. The Board concluded that the performance of the Fund was satisfactory.

*Management Fees and Expenses*

The Board considered contractual fee rates payable by the Fund for advisory and administrative services (referred to collectively as "management fees"). As part of its review, the Board considered the Fund's management fees and total expense ratio for the one-year period ended December 31, 2024, as compared to those of comparable funds, before and after giving effect to any undertaking to waive fees or reimburse expenses. The Board also considered factors that had an impact on the Fund's total expense ratio relative to comparable funds.

After considering the foregoing information, and in light of the nature, extent and quality of the services provided by the Adviser, the Board concluded that the management fees charged for advisory and related services are reasonable.

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Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Board of Trustees' Contract Approval — continued

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*Profitability and "Fall-Out" Benefits*

The Board considered the level of profits realized by the Adviser and relevant affiliates thereof in providing investment advisory and administrative services to the Fund and to all Eaton Vance Funds as a group. The Board considered the level of profits realized without regard to marketing support or other payments by the Adviser and its affiliates to third parties in respect of distribution or other services.

The Board concluded that, in light of the foregoing factors and the nature, extent and quality of the services rendered, the profits realized by the Adviser and its affiliates are not excessive.

The Board also considered direct or indirect fall-out benefits received by the Adviser and its affiliates in connection with their respective relationships with the Fund, including the benefits of research services that may be available to the Adviser as a result of securities transactions effected for the Fund and other investment advisory clients.

*Economies of Scale*

In reviewing management fees and profitability, the Board also considered the extent to which the Adviser and its affiliates, on the one hand, and the Fund, on the other hand, can expect to realize benefits from economies of scale as the assets of the Fund increase. The Board acknowledged the difficulty in accurately measuring the benefits resulting from economies of scale, if any, with respect to the management of any specific fund or group of funds. To assist in the evaluation of the sharing of any economies of scale, the Board received data for recent years showing asset levels, Adviser profitability and total expense ratios. Based upon the foregoing, the Board concluded that the Fund currently shares in the benefits from economies of scale, if any, when they are realized by the Adviser. The Board also considered the fact that the Fund is not continuously offered in the same manner as an open-end fund and that the Fund is authorized to issue additional common shares through a shelf offering. The Board also concluded that the structure of the advisory fee, which includes breakpoints at certain asset levels, will allow the Fund to continue to benefit from any economies of scale in the future.

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Eaton Vance<br>

National Municipal Opportunities Trust

September 30, 2025

Officers and Trustees

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| | |
|:---|:---|
| Officers | Officers |
| Kenneth A. Topping<br> *President* | &nbsp;&nbsp;Nicholas S. Di Lorenzo<br> *Secretary* |
| Deidre E. Walsh<br> *Vice President and Chief Legal Officer* | &nbsp;&nbsp;Laura T. Donovan<br> *Chief Compliance Officer* |
| James F. Kirchner<br> *Treasurer* |  |

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Trustees

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|:---|
| Scott E. Wennerholm<br> *Chairperson* |
| Alan C. Bowser |
| Cynthia E. Frost |
| George J. Gorman |
| Valerie A. Mosley |

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|:---|
| Keith Quinton |
| Marcus L. Smith |
| Nancy Wiser Stefani |
| Susan J. Sutherland |

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Eaton Vance Funds<br>

U.S. Customer Privacy Notice March 2024

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|:---|:---|
| &nbsp;&nbsp;&nbsp;**FACTS** | &nbsp;&nbsp;&nbsp;**WHAT DOES EATON VANCE DO WITH YOUR PERSONAL INFORMATION?** |

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|:---|:---|
| &nbsp;&nbsp;&nbsp;**Why?** | &nbsp;&nbsp;&nbsp;Financial companies choose how they share your personal information. Federal law gives consumers the right to limit some but not all sharing. Federal law also requires us to tell you how we collect, share, and protect your personal information. Please read this notice carefully to understand what we do. |
| &nbsp;&nbsp;&nbsp;**What?** | &nbsp;&nbsp;&nbsp;The types of personal information we collect and share depend on the product or service you have with us. This information can include:<br>■ Social Security number and income<br> ■ investment experience and risk tolerance<br> ■ checking account information and wire transfer instructions |
| &nbsp;&nbsp;&nbsp;**How?** | &nbsp;&nbsp;&nbsp;All financial companies need to share customers' personal information to run their everyday business. In the section below, we list the reasons financial companies can share their customers' personal information; the reasons Eaton Vance chooses to share; and whether you can limit this sharing. |

---

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**Reasons we can share your personal information** | &nbsp;&nbsp;**Does Eaton Vance<br> share?** | &nbsp;&nbsp;**Can you limit<br> this sharing?** |
| &nbsp;&nbsp;&nbsp;**For our everyday business purposes — such as to process your transactions, maintain your account(s), respond to court orders and legal investigations, or report to credit bureaus** | &nbsp;&nbsp;Yes | &nbsp;&nbsp;No |
| &nbsp;&nbsp;&nbsp;**For our marketing purposes — to offer our products and services to you** | &nbsp;&nbsp;Yes | &nbsp;&nbsp;No |
| &nbsp;&nbsp;&nbsp;**For joint marketing with other financial companies** | &nbsp;&nbsp;No | &nbsp;&nbsp;We don't share |
| &nbsp;&nbsp;&nbsp;**For our affiliates' everyday business purposes — information about your transactions and experiences** | &nbsp;&nbsp;Yes | &nbsp;&nbsp;No\* |
| &nbsp;&nbsp;&nbsp;**For our affiliates' everyday business purposes — information about your creditworthiness** | &nbsp;&nbsp;Yes | &nbsp;&nbsp;Yes\* |
| &nbsp;&nbsp;&nbsp;**For our affiliates to market to you** | &nbsp;&nbsp;Yes | &nbsp;&nbsp;Yes\* |
| &nbsp;&nbsp;&nbsp;**For nonaffiliates to market to you** | &nbsp;&nbsp;No | &nbsp;&nbsp;We don't share |

---

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;**To limit our<br> sharing** | &nbsp;&nbsp;&nbsp;Call toll-free 1-800-262-1122 or email: <u>EVPrivacy@eatonvance.com</u><br>**Please note:**<br>If you are a *new* customer, we can begin sharing your information 30 days from the date we sent this notice. When you are *no longer* our customer, we continue to share your information as described in this notice. However, you can contact us at any time to limit our sharing. |
| &nbsp;&nbsp;&nbsp;**Questions?** | &nbsp;&nbsp;&nbsp;Call toll-free 1-800-262-1122 or email: <u>EVPrivacy@eatonvance.com</u> |

---

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[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance Funds<br>

U.S. Customer Privacy Notice — continued March 2024

------

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;**Who we are** | &nbsp;&nbsp;&nbsp;**Who we are** |
| &nbsp;&nbsp;&nbsp;**Who is providing this notice?** | &nbsp;&nbsp;Eaton Vance Management and our investment management affiliates ("Eaton Vance") (see Affiliates definition below.) |
| &nbsp;&nbsp;&nbsp;**What we do** | &nbsp;&nbsp;&nbsp;**What we do** |
| &nbsp;&nbsp;&nbsp;**How does Eaton Vance<br> protect my personal<br> information?** | &nbsp;&nbsp;To protect your personal information from unauthorized access and use, we use security measures that comply with federal law. These measures include computer safeguards and secured files and buildings. We have policies governing the proper handling of customer information by personnel and requiring third parties that provide support to adhere to appropriate security standards with respect to such information. |
| &nbsp;&nbsp;&nbsp;**How does Eaton Vance<br> collect my personal<br> information?** | &nbsp;&nbsp;We collect your personal information, for example, when you<br>■ open an account or make deposits or withdrawals from your account<br> ■ buy securities from us or make a wire transfer<br> ■ give us your contact information<br>We also collect your personal information from others, such as credit bureaus, affiliates, or other companies. |
| &nbsp;&nbsp;&nbsp;**Why can't I limit all sharing?** | &nbsp;&nbsp;Federal law gives you the right to limit only<br>■ sharing for affiliates' everyday business purposes — information about your creditworthiness<br> ■ affiliates from using your information to market to you<br> ■ sharing for nonaffiliates to market to you<br>State laws and individual companies may give you additional rights to limit sharing. (See below for more on your rights under state law.) |
| &nbsp;&nbsp;&nbsp;**What happens when I limit<br> sharing for an account I hold<br> jointly with someone else?** | &nbsp;&nbsp;Your choices will apply to everyone on your account. |
| &nbsp;&nbsp;&nbsp;**Definitions** | &nbsp;&nbsp;&nbsp;**Definitions** |
| &nbsp;&nbsp;&nbsp;**Affiliates** | &nbsp;&nbsp;Companies related by common ownership or control. They can be financial and nonfinancial companies.<br>■ *Our affiliates include registered investment advisers such as Eaton Vance Management, Eaton Vance Advisers International Ltd., Boston Management and Research, Calvert Research and Management, Parametric Portfolio Associates LLC, Atlanta Capital Management Company LLC, Morgan Stanley Investment Management Inc., Morgan Stanley Investment Management Co.; registered broker-dealers such as Morgan Stanley Distributors Inc. and Eaton Vance Distributors, Inc. (together, the "Investment Management Affiliates"); and companies with a Morgan Stanley name and financial companies such as Morgan Stanley Smith Barney LLC and Morgan Stanley & Co. (the "Morgan Stanley Affiliates").* |
| &nbsp;&nbsp;&nbsp;**Nonaffiliates** | &nbsp;&nbsp;Companies not related by common ownership or control. They can be financial and nonfinancial companies.<br>■ *Eaton Vance does not share with nonaffiliates so they can market to you.* |
| &nbsp;&nbsp;&nbsp;**Joint marketing** | &nbsp;&nbsp;A formal agreement between nonaffiliated financial companies that together market financial products or services to you.<br>■ *Eaton Vance does not jointly market.* |
| &nbsp;&nbsp;&nbsp;**Other important information** | &nbsp;&nbsp;&nbsp;**Other important information** |

---

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[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance Funds<br>

U.S. Customer Privacy Notice — continued March 2024

------

&nbsp;&nbsp;&nbsp;**\*PLEASE NOTE: Eaton Vance does not share your creditworthiness information or your transactions and experiences information with the Morgan Stanley Affiliates, nor does Eaton Vance enable the Morgan Stanley Affiliates to market to you. Your opt outs will prevent Eaton Vance from sharing your creditworthiness information with the Investment Management Affiliates and will prevent the Investment Management Affiliates from marketing their products to you.<br>Vermont: Except as permitted by law, we will not share personal information we collect about Vermont residents with Nonaffiliates unless you provide us with your written consent to share such information.<br>California: Except as permitted by law, we will not share personal information we collect about California residents with Nonaffiliates and we will limit sharing such personal information with our Affiliates to comply with California privacy laws that apply to us.**

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[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Eaton Vance Funds<br>

IMPORTANT NOTICES

------

**Delivery of Shareholder Documents. The Securities and Exchange Commission (SEC) permits funds to deliver only one copy of shareholder documents, including prospectuses, proxy statements and shareholder reports, to fund investors with multiple accounts at the same residential or post office box address. This practice is often called "householding" and it helps eliminate duplicate mailings to shareholders. *Equiniti Trust Company, LLC* ("*EQ*"), *the closed-end funds transfer agent, or your financial intermediary, may household the mailing of your documents indefinitely unless you instruct EQ, or your financial intermediary, otherwise.* If you would prefer that your Eaton Vance documents not be householded, please contact EQ or your financial intermediary. Your instructions that householding not apply to delivery of your Eaton Vance documents will typically be effective within 30 days of receipt by EQ or your financial intermediary.**

**Portfolio Holdings. Each Eaton Vance Fund and its underlying Portfolio(s) (if applicable) files a schedule of portfolio holdings on Part F to Form N-PORT with the SEC. Certain information filed on Form N-PORT may be viewed on the Eaton Vance website at www.eatonvance.com, by calling Eaton Vance at 1-800-262-1122 or in the EDGAR database on the SEC's website at www.sec.gov.**

**Proxy Voting. From time to time, funds are required to vote proxies related to the securities held by the funds. The Eaton Vance Funds or their underlying Portfolios (if applicable) vote proxies according to a set of policies and procedures approved by the Funds' and Portfolios' Boards. You may obtain a description of these policies and procedures and information on how the Funds or Portfolios voted proxies relating to portfolio securities during the most recent 12-month period ended June 30, without charge, upon request, by calling 1-800-262-1122 and by accessing the SEC's website at www.sec.gov. You may also access proxy voting information for the Eaton Vance Funds or their underlying Portfolios at www.eatonvance.com/<br> proxyvoting.**

**Share Repurchase Program. The Fund's Board of Trustees has approved a share repurchase program authorizing the Fund to repurchase up to 10% of its common shares outstanding as of the last day of the prior calendar year in open-market transactions at a discount to net asset value. The repurchase program does not obligate the Fund to purchase a specific amount of shares. The Fund's repurchase activity, including the number of shares purchased, average price and average discount to net asset value, is disclosed in the Fund's annual and semi-annual reports to shareholders.**

**Additional Notice to Shareholders. If applicable, a Fund may also redeem or purchase its outstanding preferred shares in order to maintain compliance with regulatory requirements, borrowing or rating agency requirements or for other purposes as it deems appropriate or necessary.**

**Closed-End Fund Information. Eaton Vance closed-end funds make fund performance data and certain information about portfolio characteristics available on the Eaton Vance website shortly after the end of each month. Other information about the funds is available on the website. The funds' net asset value per share is readily accessible on the Eaton Vance website. Portfolio holdings for the most recent month-end are also posted to the website approximately 30 days following the end of the month. This information is available at www.eatonvance.com on the fund information pages under "Closed-End Funds & Term Trusts."**

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[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

Investment Adviser and Administrator

#### Eaton Vance Management<br> One Post Office Square<br> Boston, MA 02109
Custodian

#### State Street Bank and Trust Company<br> One Congress Street, Suite 1<br> Boston, MA 02114-2016
Transfer Agent

#### Equiniti Trust Company, LLC ("EQ")<br> P.O. Box 500<br> Newark, NJ 07101
Fund Offices

One Post Office Square<br> Boston, MA 02109

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[**Table of Contents**](#job_ev_ar_6ae73962-561d-4f5c-8098-7aaef02823b2_toc)

7765 9.30.25

------

(b) Not applicable.

**Item 2. Code of Ethics** 

Not required in this filing.

**Item 3. Audit Committee Financial Expert** 

Not required in this filing.

**Item 4. Principal Accountant Fees and Services** 

Not required in this filing.

**Item 5. Audit Committee of Listed Registrants** 

Not required in this filing.

------

**Item 6. Schedule of Investments** 

(a) Please see schedule of investments contained in the Report to Stockholders included under Item 1 of this Form N-CSR.

(b) Not applicable.

**Item 7. Financial Statements and Financial Highlights for Open-End Management Investment Companies** 

Not applicable.

**Item 8. Changes in and Disagreements with Accountants for Open-End Management Investment Companies** 

Not applicable.

**Item 9. Proxy Disclosures for Open-End Management Investment Companies** 

Not applicable.

**Item 10. Remuneration Paid to Directors, Officers, and Others of Open-End Management Investment Companies** 

Not applicable.

**Item 11. Statement Regarding Basis for Approval of Investment Advisory Contract** 

The information is included in Item 1 of this Form N-CSR.

**Item 12. Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies** 

Not required in this filing.

**Item 13. Portfolio Managers of Closed-End Management Investment Companies** 

Not required in this filing.

**Item 14. Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers** 

No such purchases this period.

------

**Item 15. Submission of Matters to a Vote of Security Holders** 

There have been no material changes to the procedures by which shareholders may recommend nominee to the Trust's Board of Trustees since the Trust last provided disclosure in response to this item.

**Item 16. Controls and Procedures** 

(a) It is the conclusion of the registrant's principal executive officer and principal financial officer that
the effectiveness of the registrant's current disclosure controls and procedures (such disclosure controls and procedures having been evaluated within 90 days of the date of this filing) provide reasonable assurance that the information
required to be disclosed by the registrant has been recorded, processed, summarized and reported within the time period specified in the Commission's rules and forms and that the information required to be disclosed by the registrant has been
accumulated and communicated to the registrant's principal executive officer and principal financial officer in order to allow timely decisions regarding required disclosure.

(b) There have been no changes in the registrant's internal control over financial reporting during the
period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting.

**Item 17. Disclosure of Securities Lending Activities for Closed-End Management Investment Companies** 

No activity to report for the registrant's most recent fiscal year end.

**Item 18. Recovery of Erroneously Awarded Compensation** 

Not applicable.

**Item 19. Exhibits** 

---

| | |
|:---|:---|
| (a)(1) | Registrant's Code of Ethics – Not applicable (please see Item 2). |
| (a)(2)(i) | [Principal Financial Officer's Section 302 certification.](d55436dex99cert.htm) |
| (a)(2)(ii) | [Principal Executive Officer's Section 302 certification.](d55436dex99cert.htm#a) |
| (b) | [Combined Section 906 certification.](d55436dex99906cert.htm) |

---

------

**Signatures** 

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

---

| | |
|:---|:---|
| <u>Eaton Vance National Municipal Opportunities Trust</u> | <u>Eaton Vance National Municipal Opportunities Trust</u> |
| By: | /s/ Kenneth A. Topping |
|  | Kenneth A. Topping |
|  | Principal Executive Officer |
| Date: | November 24, 2025 |

---

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

---

| | |
|:---|:---|
| By: | /s/ James F. Kirchner |
|  | James F. Kirchner |
|  | Principal Financial Officer |
| Date: | November 24, 2025 |
| By: | /s/ Kenneth A. Topping |
|  | Kenneth A. Topping |
|  | Principal Executive Officer |
| Date: | November 24, 2025 |

---

## Ex-99.Cert

**Eaton Vance National Municipal Opportunities Trust** 

**FORM N-CSR** 

**Exhibit 19(a)(2)(i)** 

**<u>CERTIFICATION</u>**

I, James F. Kirchner, certify that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. I have reviewed this report on Form N-CSR of Eaton Vance National
Municipal Opportunities Trust;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a
material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3. Based on my knowledge, the financial statements, and other financial information included in this report,
fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the
periods presented in this report;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining
disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be
designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is
being prepared;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Designed such internal control over financial reporting, or caused such internal control over financial
reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting
principles;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this
report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report based on such evaluation; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) Disclosed in this report any change in the registrant's internal control over financial reporting that
occurred during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5. The registrant's other certifying officer(s) and I have disclosed to the registrant's auditors and
the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) All significant deficiencies and material weaknesses in the design or operation of internal control over
financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize, and report financial information; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in
the registrant's internal control over financial reporting.

---

| | |
|:---|:---|
| Date: November 24, 2025 | /s/ James F. Kirchner |
|  | James F. Kirchner |
|  | Principal Financial Officer |

---

------

**Eaton Vance National Municipal Opportunities Trust** 

**FORM N-CSR** 

**Exhibit 19(a)(2)(ii)** 

**<u>CERTIFICATION</u>**

I, Kenneth A. Topping, certify that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. I have reviewed this report on Form N-CSR of Eaton Vance National
Municipal Opportunities Trust;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a
material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3. Based on my knowledge, the financial statements, and other financial information included in this report,
fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the
periods presented in this report;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining
disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be
designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is
being prepared;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Designed such internal control over financial reporting, or caused such internal control over financial
reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting
principles;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this
report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report based on such evaluation; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) Disclosed in this report any change in the registrant's internal control over financial reporting that
occurred during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5. The registrant's other certifying officer(s) and I have disclosed to the registrant's auditors and
the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) All significant deficiencies and material weaknesses in the design or operation of internal control over
financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize, and report financial information; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in
the registrant's internal control over financial reporting.

---

| | |
|:---|:---|
| Date: November 24, 2025 | /s/ Kenneth A. Topping |
|  | Kenneth A. Topping |
|  | Principal Executive Officer |

---

## Exhibit 99.906

**Form N-CSR Item 19(b) Exhibit** 

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned hereby certify in their capacity as Principal Financial Officer and Principal Executive Officer, respectively, of Eaton Vance National Municipal Opportunities Trust (the "**Trust**") that:

(a) the Report of the **Trust** on Form N-CSR for the period ended
September 30, 2025 (the "Report") fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(b) the information contained in the Report fairly presents, in all material respects, the financial condition and
the results of operations of the **Trust** for such period.

**A signed original of this written statement required by section 906 has been provided to the Trust and will be retained by the Trust and furnished to the Securities and Exchange Commission or its staff upon request.** 

---

| |
|:---|
| Eaton Vance National Municipal Opportunities Trust |
| Date: November 24, 2025 |
| /s/ James F. Kirchner |
| James F. Kirchner |
| Principal Financial Officer |
| Date: November 24, 2025 |
| /s/ Kenneth A. Topping |
| Kenneth A. Topping |
|  Principal Executive Officer |

---