[Form 3/A] Calamos Strategic Total Return Fund Amended Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

John S. Koudounis filed an amended Form 3 reporting his beneficial ownership in Calamos Strategic Total Return Fund (CSQ). The amendment updates his relationship to the issuer: he is listed as an officer (Vice President) and as a trustee effective 09/01/2025. The statement shows 15,830 shares of common stock owned directly. The amendment references an original filing dated 07/11/2016 and is signed on 09/09/2025.

Positive

• Amended filing documents the reporting person's updated relationship with the issuer (Vice President and Trustee effective 09/01/2025).
• Direct ownership of 15,830 common shares is disclosed, providing transparency under Section 16 reporting rules.

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: Routine ownership disclosure updating the reporter's role as trustee; no new securities issued or derivative positions reported.

The amended Form 3 clarifies the reporting person's relationship to the fund, listing both an officer title and trustee status effective 09/01/2025. It reports a single class of non-derivative common stock ownership of 15,830 shares held directly. This filing appears to be a corrective/clarifying amendment rather than a transaction report and contains no additional compensation, grants, or derivative securities.

Securities Analyst

TL;DR: Disclosure is informational and routine; it records direct ownership but shows no material trading activity.

The document provides basic Section 16 reporting information: reporting person name and address, event date 09/01/2025, and direct ownership of 15,830 common shares. There are no derivative holdings reported and no sale or purchase amounts disclosed. For investors, this is a standard ownership update without indication of a change in share count.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Koudounis John S.

(Last) (First) (Middle)

2020 CALAMOS COURT

(Street)

NAPERVILLE IL 60563

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
09/01/2025

3. Issuer Name and Ticker or Trading Symbol
CALAMOS STRATEGIC TOTAL RETURN FUND [ CSQ ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)	X	Other (specify below)
	Vice President		Trustee effective 9-1-25

5. If Amendment, Date of Original Filed (Month/Day/Year)
07/11/2016

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	15,830	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

The reporting person has filed this amended Form 3 to update his relationship to the Issuer.

	/s/ John S. Koudounis	09/09/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What does the Form 3/A for CSQ filed by John S. Koudounis disclose?

The amended Form 3 discloses that John S. Koudounis holds 15,830 shares of common stock directly and updates his relationship to the issuer as an officer (Vice President) and trustee effective 09/01/2025.

Did the filing report any derivative securities or option holdings for CSQ?

No. The Form 3/A lists only non-derivative common stock ownership of 15,830 shares and contains no entries for derivative securities.

When was the event requiring this statement and when was the form signed?

The event date is listed as 09/01/2025 and the Form 3/A is signed by John S. Koudounis on 09/09/2025.

Does the amendment replace an earlier filing?

Yes. The form references an original filing dated 07/11/2016 and is submitted as an amended Form 3 to update the reporting relationship.

Is there any indication of share purchases or sales in this filing?

No. The document reports current direct ownership of 15,830 shares but does not list any transactions, purchases, or sales.