Company: ETV
Filing Date: 2025-04-29
Form Type: N-2ASR
Source: 0001193125-25-103160
Chunk: 205

Company: Eaton Vance Tax-Managed Buy-Write Opportunities Fund
Filing Date: 2025-04-29
Form: N-2ASR
Chunk 205
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 fee, by electronic request at publicinfo@sec.gov. Information contained in, or that can be accessed through, the Fund’s website is not part of this SAI, the Prospectus or the accompanying prospectus supplement. FINANCIAL STATEMENTS The audited financial statements and the report of the independent registered public accounting firm of the Fund for the fiscal year ended December 31, 2024 are incorporated herein by reference from the Fund’s most recent Annual Report to Common Shareholders filed with the SEC on February 27, 2025 ( Accession No. 0001193125-25-038785) on Form N-CSRpursuant to Rule 30b2-1under the 1940 Act.

APPENDIX A Adopted: June 16, 2003 Revised: May 8, 2013; December 10, 2019; October 12, 2021; April 2025 Eaton Vance Funds Proxy Voting Policy and Procedures

| I. | Overview |

The Boards of Trustees (the “Board”) of the Eaton Vance Funds 1have adopted these written proxy voting policy and procedures (the “Policy”). For purposes of this Policy:

| • |     | “Fund” means each registered investment company sponsored by the Eaton Vance organization; and |

| • |     | “Adviser” means the investment adviser or sub-adviser responsible for the day-to-day management of all or a portion of the Fund’s assets. |

| II. | Delegation of Proxy Voting Responsibilities |

The Board hereby delegates to the Adviser responsibility for voting the Fund’s proxies as described in this Policy. In this connection, the Adviser is required to provide the Board with a copy of its proxy voting policies and procedures (“Adviser Procedures”) and all Fund proxies will be voted in accordance with the Adviser Procedures. The Adviser Procedures shall comply with Rule 206(4)-6under the Investment Advisers Act of 1940, as amended (the “Advisers Act”) and be reasonably designed to ensure that the Adviser votes Fund securities in the best interest of the Fund and include how the Adviser addresses material conflicts that may arise between the interest of the Adviser and the interests of the Fund. The Adviser is required to report any material change to the Adviser Procedures to the Board in the manner set forth in Section V below.

| III. | Delegation of Proxy Voting Disclosure Responsibilities |

Pursuant to Rule 30b1-4promulg