SEC Form SC 13G/A filed by Calamos Strategic Total Return (Amendment)

CALAMOS STRATEGIC TOTAL RETURN FUND

(Name of Issuer)

Series A Mandatory Redeemable Preferred Shares Series B Mandatory Redeemable Preferred Shares Series C Mandatory Redeemable Preferred Shares

(Title of Class of Securities)

128125*29 128125*37 128125*45

(CUSIP Number)

December 31, 2022

(Date of Event which Requires Filing of this Statement)

☑	Rule 13d-1(b)

☐	Rule 13d-1(c)

☐	Rule 13d-1(d)

Item 1.

(a)

Name of Issuer:

Item 2.

(a)

Name of Persons Filing:

(b)

Address of Principal Business Office or, if none, Residence :

(c)

Citizenship or Place of Organization:

(d)

Title of Class of Securities:

(e)

CUSIP Numbers:

	(a)	☐	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
	(b)	☐	Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c);
	(c)	☐	Insurance company as defined in Section 3(a)(19) of the Act (15 U.S.C. 78c);
	(d)	☐	Investment company registered under Section 8 of the Investment Company Act of 1940 (U.S.C. 80a-8);
	(e)	☒	An investment adviser in accordance with Section 240.13d-1(b)(1)(ii)(E);
	(f)	☐	An employee benefit plan or endowment fund in accordance with Section 240.13d-1(b)(1)(ii)(F);
	(g)	☐	A parent holding company or control person in accordance with Section 240.13d-1(b)(1)(ii)(G);
	(h)	☐	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
	(i)	☐	A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
	(j)	☐	A non-U.S. institution in accordance with Section 240.13d-1(b)(1) (ii)(J).
	(k)	☐	Group, in accordance with Section 240.13d-1(b)(1)(ii)(K).

Item 4.

Ownership:

(a)

Amount beneficially owned: 3,300,000

(b)

Percent of class: 51.08%*

(c)

Number of shares as to which the person has:

(i)

Sole power to vote or to direct the vote: 3,300,000

(ii)

Shared power to vote or direct the vote: 0

(iii)

Sole power to dispose or direct the disposition of: 3,300,000

(iv)

Shared power to dispose or to direct the disposition of: 0

Item 5.

Ownership of Five Percent or Less of a Class:

Item 6.

Ownership of More than Five Percent on Behalf of Another Person:

Item 7.

Identification and Classification of the Subsidiary which Acquired the Security Being Reported on by the Parent Holding Company:

Item 8.

Identification and Classification of Members of the Group:

Item 9.

Notice of Dissolution of Group:

Item 10.

Certifications:

	METLIFE INVESTMENT MANAGEMENT, LLC
Date: February 14, 2023	By:	/s/ Israel Grafstein
	Name:	Israel Grafstein
	Title:	Chief Compliance Officer