UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 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) ~~August~~May 2314, ~~2021~~2024

Calamos Global Total Return Fund

(Exact Name of Registrant as Specified in Its Charter)

Delaware

(State or Other Jurisdiction of Incorporation)

811-21547		20-3377281
(Commission File Number)		(IRS Employer Identification No.)

2020 Calamos Court Naperville, Illinois		60563
(Address of Principal Executive Offices)		(Zip Code)

(630) 245-7200

(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 (see General Instruction A.2. below):

¨	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 Name of each exchange on which registered Symbol(s)

Title of Each Class		Trading Symbol(s)		Name of Each Exchange on Which Registered
Common Shares		CGO		NASDAQ Global Select Market

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 5.03.

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

Effective ~~August 23~~May 14, ~~2021~~ 2024, the Board of Trustees of Calamos Global Total Return Fund (the "Trust") amended ~~and restated in~~ the ~~entirety the~~ Trust’s ~~Declaration~~By-Laws, ofas ~~Trust (the "Amended~~amended and ~~Restated~~restated ~~Declaration~~through ofAugust 23, ~~Trust")~~2021 ~~and~~ (the ~~Trust’s~~ “By-Laws ~~(the "Amended and Restated Bylaws"~~”). The ~~Amended~~aforementioned ~~and Restated~~amendment ~~Declaration of Trust and~~ (the ~~Amended~~“Amendment”) ~~and~~relates to ~~Restated~~provisions ~~Bylaws~~governing ~~clarify~~the ~~certain~~forum ~~provisions~~for ~~relating~~adjudication toof ~~preferred securities~~disputes.

The foregoing description ~~of the Amended and~~ ~~Restated Declaration~~ of ~~Trust and~~ the ~~Amended~~Amendment ~~and Restated Bylaws~~ does not purport to be complete and is qualified in its entirety by reference to the full text of the ~~Amended and Restated Declaration of Trust and the Amended and Restated Bylaws~~Amendment, which is ~~are~~ attached hereto as Exhibit 3.~~1 and Exhibit 3.~~2, ~~respectively,~~ and ~~are~~is incorporated herein by reference.

Item 9.01.

Financial Statements and Exhibits.

(d)

Exhibits

	3.1	Amended and Restated Declaration of Trust of Calamos Global Total Return Fund dated August 23, 2021.
	3.2	Amended and Restated Bylaws of Calamos Global Total Return Fund dated August 23, 2021.

3.2

Amendment, dated May 14, 2024, to the By-Laws of Calamos Global Total Return Fund, as amended and restated through August 23, 2021.

SIGNATURE

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

Calamos Global Total Return Fund By: /s/ JErik D. ~~Christopher~~Ojala ~~Jackson~~ Name: JErik D. ~~Christopher~~Ojala ~~Jackson~~ Title: Vice President and Secretary

Date: ~~August 26~~May 14, ~~2021~~2024

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