UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): July 19, 2024

~~April 21~~PIONEER FLOATING RATE FUND, ~~2021~~INC.

PIONEER FLOATING RATE TRUST

(Registrant)

PIONEER DIVERSIFIED HIGH INCOME ~~TRUST~~FUND, INC.

PIONEER ~~MUNICIPAL~~ HIGH INCOME ~~TRUST~~FUND, INC.

PIONEER MUNICIPAL HIGH INCOME ~~ADVANTAGE~~FUND, ~~TRUST~~INC.

PIONEER MUNICIPAL HIGH INCOME ~~TRUST~~ADVANTAGE FUND, INC.

PIONEER MUNICIPAL HIGH INCOME OPPORTUNITIES FUND, INC.

(Co-Registrants)

(Exact name of registrant as specified in its charter)

Delaware	811-21654 (Pioneer Floating Rate Trust) 811-22014 (Pioneer Diversified High Income Trust) 811-21321 (Pioneer Municipal High Income Trust) 811-21409 (Pioneer Municipal High Income Advantage Trust) 811-21043 (Pioneer High Income Trust)	58-2683903 (Pioneer Floating Rate Trust) 20-8779403 (Pioneer Diversified High Income Trust) 03-0512430 (Pioneer Municipal High Income Trust) 81-0634319 (Pioneer Municipal High Income Advantage Trust) 02-0563892 (Pioneer High Income Trust)
Maryland	811-21654 (Pioneer Floating Rate Fund, Inc.) 811-22014 (Pioneer Diversified High Income Fund, Inc.) 811-21043 (Pioneer High Income Fund, Inc.) 811-21321 (Pioneer Municipal High Income Fund, Inc.) 811-21409 (Pioneer Municipal High Income Advantage Fund, Inc.) 811-23699 (Pioneer Municipal High Income Opportunities Fund, Inc.)	58-2683903 (Pioneer Floating Rate Fund, Inc.) 20-8779403 (Pioneer Diversified High Income Fund, Inc.) 02-0563892 (Pioneer High Income Fund, Inc.) 03-0512430 (Pioneer Municipal High Income Fund, Inc.) 81-0634319 (Pioneer Municipal High Income Advantage Fund, Inc.) 87-0966308 (Pioneer Municipal High Income Opportunities Fund, Inc.)
(State or other jurisdictionof incorporation)	(~~CommissionFile~~Commission File Numbers)	(I.R.S. ~~EmployerIdentification~~Employer Identification Nos.)
60 State Street, Boston, MA		02109
(Address of principal executive offices)		(Zip Code)

60 State Street, Boston, MA		02109
(Address of principal executive offices)		(Zip Code)

1-617-742-7825

1-800-859-8508

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol(s) Name of each exchange on which registered Common Stock PHD New York Stock Exchange Common Stock HNW NYSE American Common Stock PHT New York Stock Exchange Common Stock MHI New York Stock Exchange Common Stock MAV New York Stock Exchange Common Stock ~~PHT~~MIO New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

☐	Emerging growth company

☐	If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to section 13(a) of the Exchange Act.

Item 18.01 ~~Entry~~Other ~~into a Material Definitive Agreement~~Events.

OnAmundi ~~April 21,~~Asset ~~2021,~~Management ~~each Registrant~~US, ~~previously~~Inc. ~~organized as a Delaware statutory Trust, redomiciled to Maryland~~ (~~in each case,~~ the “~~redomiciling~~Adviser”)., ~~For~~ each ~~Registrant,~~fund’s ~~the~~investment ~~redomiciling~~adviser, ~~was~~is ~~effected~~currently ~~through~~an aindirect, ~~statutory merger of the Registrant with and into a newly~~wholly-~~established~~owned subsidiary ~~Maryland corporation formed for the purpose~~ of ~~effecting~~Amundi. ~~the~~On ~~redomiciling~~July 9, ~~(each~~2024, ~~a “Successor~~Amundi ~~Entity”)~~announced ~~pursuant~~that toit ~~the~~had ~~terms of an Agreement and Plan of Merger~~ entered into bya ~~and~~definitive ~~between~~agreement ~~the~~with ~~Registrant~~Victory ~~and~~Capital ~~the corresponding Successor Entity (in each case~~Holdings, ~~the~~Inc. (“~~Merger~~Victory ~~Agreement~~Capital”). ~~Each~~to ~~Merger~~combine ~~Agreement~~the ~~is attached~~Adviser aswith ~~Exhibit~~Victory ~~2.1~~Capital, ~~to this Current Report~~ and ~~incorporated~~for ~~herein~~Amundi byto ~~reference.~~become ~~The~~a strategic ~~effective~~shareholder ~~time and date~~ of ~~each~~Victory ~~redomiciling~~Capital ~~was 4:30 pm, Eastern time, on April 21, 2021~~ (the “~~Effective Time~~Transaction”). ~~Upon~~Victory ~~effectiveness~~Capital ofis ~~each Merger,~~headquartered ~~(i) the relevant Successor Entity became the successor~~ in ~~interest~~San ~~to its corresponding Registrant~~Antonio, ~~(ii)~~Texas. ~~each~~The ~~outstanding~~closing ~~share~~ of ~~common~~the ~~stock~~Transaction ofis ~~the~~subject ~~relevant~~to ~~Registrant~~certain ~~was~~regulatory ~~automatically~~approvals ~~converted~~and ~~into~~other ~~one~~conditions. ~~share~~There ofis ~~common stock~~no ofassurance ~~its~~that ~~corresponding Successor Entity, and (iii)~~ the ~~shareholders~~Transaction ofwill ~~the relevant Registrant became stockholders of its corresponding Successor Entity~~close.

The ~~name~~closing of the Transaction would cause each ~~Registrant~~fund’s ~~changed~~current ininvestment ~~connection~~advisory agreement with the ~~redomiciling~~Adviser to terminate. Under the terms of the Transaction, aseach ~~follows:~~fund’s Board of Directors will be asked to approve a new investment advisory agreement for the fund with Victory Capital Management Inc., an affiliate of Victory Capital. If approved by the Board, each fund’s new investment advisory agreement will be submitted to the shareholders of the fund for their approval. There is no assurance that the Board or the shareholders of the fund will approve the new investment advisory agreement.

Current Name New Name Pioneer Diversified High Income Trust Pioneer Diversified High Income Fund, Inc. Pioneer Floating Rate Trust Pioneer Floating Rate Fund, Inc. Pioneer High Income Trust Pioneer High Income Fund, Inc. Pioneer Municipal High Income Advantage Trust Pioneer Municipal High Income Advantage Fund, Inc. Pioneer Municipal High Income Trust Pioneer Municipal High Income Fund, Inc.

The ticker symbol of each Registrant on the New York Stock Exchange and the NYSE American, as applicable, did not change in connection with the redomiciling. The redomiciling did not result in any change to the investment adviser, investment objective and strategies, portfolio management team, policies and procedures or the members of the Board overseeing each Registrant.

Following each Registrant’s redomiciling, the rights of shareholders are governed by Maryland General Corporation Law and the Articles of Incorporation of the surviving Maryland corporation attached hereto as Exhibit 3.1 and Bylaws of the surviving Maryland corporation attached hereto as Exhibit 3.2. In addition, each Maryland corporation is subject to the Maryland Control Share Acquisition Act (the “Control Share Act”) following redomiciling.

The Control Share Act protects the interests of all stockholders by generally providing that any holder of “control shares” acquired in a “control share acquisition” may not exercise voting rights with respect to the “control shares,” except to the extent approved by a vote of two-thirds of all the votes entitled to be cast on the matter. Generally, “control shares” are shares that, when aggregated with shares already owned by an acquiring person, would entitle the acquiring person to exercise 10% or more, 33 1/3% or more, or a majority of the total voting power of shares entitled to vote in the election of directors. The Control Share Act provides that a “control share acquisition” does not include the acquisition of shares in a merger, consolidation or share exchange. Therefore, a shareholder of a Registrant that acquired shares of a Successor Entity as a result of the merger of the Registrant will be able to exercise voting rights as to those shares even if the number of such shares acquired by the shareholder in the merger exceeds one or more of the thresholds of the Control Share Act.

The foregoing description of the redomiciling of each Registrant is only a summary and is qualified in its entirety by reference to the full text of the Merger Agreement. The above description of the Control Share Act is only a high-level summary and does not purport to be complete. Investors should refer to the actual provisions of the Control Share Act and their Registrant’s bylaws for more information, including definitions of key terms, various exclusions and exemptions from the statute’s scope, and the procedures by which stockholders may approve the reinstatement of voting rights to holders of “control shares.”

Item 3.03 Material Modification to Rights of Security Holders.

Please see the disclosure set forth under Item 1.01 of this Current Report, which is incorporated by reference into this Item 3.03.

Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.

Please see the disclosure set forth under Item 1.01 of this Current Report, which is incorporated by reference into this Item 5.03. The Articles of Incorporation of each Maryland corporation effective as of April 5, 2021 is attached hereto as Exhibit 3.1 and the Bylaws of each Maryland corporation effective as of April 6, 2021 is attached hereto as Exhibit 3.2.

Item 9.01

Financial Statements and Exhibits.

(d) Exhibits.:

2.1		Merger Agreements
Exhibit Number		Description
3.1		Articles of Incorporation of each Maryland corporation
99.1		Press Release, dated July 19, 2024
3.2		Bylaws of each Maryland corporation

This Current Report may contain statements regarding plans and expectations for the future that constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 (the “PSLRA”), and such statements are intended to qualify for the safe harbors from liability established by the PSLRA. All statements other than statements of historical fact are forward-looking and can sometimes be identified as such by the context of the statements, including words such as “believe,” “could,” “expect,” “anticipate,” “plan,” “may,” “will,” “would,” “should,”

“intend,” “possible,” “continue” “project,” “estimate,” “guidance” and other similar terms and phrases, whether in the negative or affirmative, although not all forward-looking statements include these words. Similarly, statements that describe the objectives, plans, or goals of the Registrants or their investment adviser are forward-looking. Such forward-looking statements are based upon the Registrants’ current plans, estimates and expectations and are not a representation that such plans, estimates, or expectations will be achieved. Because such statements include risks, uncertainties and contingencies, actual events may differ materially from the expectations, intentions, beliefs, plans or predictions of the future expressed or implied by such forward-looking statements. Additionally, past performance is no guarantee of future results. Additional information concerning such risks and uncertainties are or will be contained in each Registrant’s filings with the U.S. Securities and Exchange Commission (the “SEC”), including the Registrant’s Annual Report to Shareholders on Form N-CSR, and its subsequent filings with the SEC which are available at http://www.sec.gov. These factors should be considered carefully and readers are cautioned not to place undue reliance on such forward-looking statements. Except as required by applicable law, the Registrants undertake no obligation to update publicly these statements for any reason, whether to reflect new information or the occurrence of unanticipated events or otherwise, following the date of this press release.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, each Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: ~~April~~July 2119, ~~2021~~2024

Pioneer Floating Rate ~~Trust~~Fund, Inc. Pioneer High Income Fund, Inc. Pioneer Diversified High Income ~~Trust~~Fund, Inc. Pioneer Municipal High Income ~~Trust~~Fund, Inc. Pioneer Municipal High Income Advantage ~~Trust~~Fund, Inc. Pioneer Municipal High Income ~~Trust~~Opportunities Fund, Inc. /s/ Christopher Kelley Name: Christopher Kelley Title: Secretary

EXHIBIT INDEX

Exhibit Number		Description
2.1		Merger Agreements
3.1		Articles of Incorporation of each Maryland corporation
3.2		Bylaws of each Maryland corporation

Filing Compare · Pioneer Floating Rate Fund, Inc.