Calamos fund: MetLife now holds 0% of Series D

CALAMOS STRATEGIC TOTAL RETURN FUND (CSQ) received an amended Schedule 13G/A from MetLife Investment Management, LLC stating that, as of August 31, 2026, it no longer beneficially owns any Series D Mandatory Redeemable Preferred Shares.

Rhea-AI Filing Summary

CALAMOS STRATEGIC TOTAL RETURN FUND (CSQ) received an amended Schedule 13G/A from MetLife Investment Management, LLC stating that, as of August 31, 2026, it no longer beneficially owns any Series D Mandatory Redeemable Preferred Shares.

The reporting person discloses 0 shares beneficially owned, representing 0% of this preferred share class, with no sole or shared voting or dispositive power over any shares.

Key Figures

Beneficial ownership: 0 shares Percent of class owned: 0% Sole voting power: 0 shares +3 more

6 metrics

Beneficial ownership 0 shares Series D Mandatory Redeemable Preferred Shares beneficially owned as of August 31, 2026

Percent of class owned 0% Ownership of Series D Mandatory Redeemable Preferred Shares as of August 31, 2026

Sole voting power 0 shares Shares with sole power to vote or direct the vote

Shared voting power 0 shares Shares with shared power to vote or direct the vote

Sole dispositive power 0 shares Shares with sole power to dispose or direct disposition

Shared dispositive power 0 shares Shares with shared power to dispose or direct disposition

Key Terms

beneficial owner, Series D Mandatory Redeemable Preferred Shares, Sole voting power, Shared dispositive power

4 terms

beneficial owner financial

"the Reporting Person may be deemed to be the beneficial owner of 0 Series D"

A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.

Series D Mandatory Redeemable Preferred Shares financial

"Title of class of securities: Series D Mandatory Redeemable Preferred Shares"

Sole voting power financial

"Sole power to vote or to direct the vote: 0"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

Shared dispositive power financial

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

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Schedule 13G/A filing disclose for CALAMOS STRATEGIC TOTAL RETURN FUND (CSQ)?

It discloses that MetLife Investment Management, LLC reports beneficial ownership of 0 Series D Mandatory Redeemable Preferred Shares of CALAMOS STRATEGIC TOTAL RETURN FUND, representing 0% of that class as of August 31, 2026.

How many Series D Mandatory Redeemable Preferred Shares of CSQ does MetLife Investment Management own now?

As of August 31, 2026, MetLife Investment Management, LLC reports beneficial ownership of 0 Series D Mandatory Redeemable Preferred Shares of CALAMOS STRATEGIC TOTAL RETURN FUND, with no sole or shared voting or dispositive power over any shares.

What percentage of CSQ’s Series D Mandatory Redeemable Preferred Shares is owned by MetLife Investment Management?

MetLife Investment Management, LLC reports ownership of 0% of CALAMOS STRATEGIC TOTAL RETURN FUND’s Series D Mandatory Redeemable Preferred Shares, falling into the category of ownership of 5 percent or less of the class.

What voting power does MetLife Investment Management report over CSQ’s Series D preferred shares?

MetLife Investment Management, LLC reports 0 shares with sole power to vote and 0 shares with shared power to vote CALAMOS STRATEGIC TOTAL RETURN FUND’s Series D Mandatory Redeemable Preferred Shares.

Who signed the Schedule 13G/A for MetLife related to CSQ and when?

The filing was signed by Israel Grafstein, Chief Compliance Officer of MetLife Investment Management, LLC, on September 8, 2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/08/2026 - 04:12 PM Accepted by SEC EDGAR 09/08/2026 - 04:11 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

CALAMOS STRATEGIC TOTAL RETURN FUND

(Name of Issuer)

Series D Mandatory Redeemable Preferred Shares

(Title of Class of Securities)

128125*52

(CUSIP Number)

08/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 128125*52

1

Names of Reporting Persons

MetLife Investment Management, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

0 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: CALAMOS STRATEGIC TOTAL RETURN FUND
(b)	Address of issuer's principal executive offices: 2020 Calamos Court, Naperville, Illinois 60563-2787
Item 2.
(a)	Name of person filing: MetLife Investment Management, LLC (the "Reporting Person")
(b)	Address or principal business office or, if none, residence: One MetLife Way, Whippany, New Jersey 07981
(c)	Citizenship: Delaware
(d)	Title of class of securities: Series D Mandatory Redeemable Preferred Shares
(e)	CUSIP No.: 128125*52
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(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 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 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 § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: As of August 31, 2026, the Reporting Person may be deemed to be the beneficial owner of 0 Series D Mandatory Redeemable Preferred Shares, representing 0% of the Series D Mandatory Redeemable Preferred Shares.
(b)	Percent of class: 0%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

MetLife Investment Management, LLC

Signature:	/s/ Israel Grafstein
Name/Title:	Israel Grafstein, Chief Compliance Officer
Date:	09/08/2026