Calamos Convertible & High Income (CHY) updates Form 3 for officer Koudounis

Rhea-AI Filing Summary

CALAMOS CONVERTIBLE & HIGH INCOME FUND filed an amended Form 3 for John S. Koudounis. He is identified as a Vice President of the fund and noted as a trustee effective September 1, 2025. The amendment does not report any insider buy or sell transactions.

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 CONVERTIBLE & HIGH INCOME FUND [ CHY ]

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)

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.

No securities are beneficially owned.

	/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 amended Form 3 for CHY disclose about John S. Koudounis?

The amended Form 3 lists John S. Koudounis as a Vice President of CALAMOS CONVERTIBLE & HIGH INCOME FUND and notes he will serve as a trustee effective September 1, 2025, without reporting any insider transactions.

Does the CHY Form 3/A show any insider share purchases or sales?

No, the Form 3/A for CALAMOS CONVERTIBLE & HIGH INCOME FUND reports zero insider buy or sell transactions for John S. Koudounis. All transaction counts and share amounts are listed as zero in the summarized data.

What roles does John S. Koudounis hold at CALAMOS CONVERTIBLE & HIGH INCOME FUND (CHY)?

John S. Koudounis is reported as an officer with the title Vice President of CALAMOS CONVERTIBLE & HIGH INCOME FUND and is additionally described as a trustee effective September 1, 2025, according to the amended Form 3.

Why is the CHY Form 3/A filing characterized as low complexity?

The Form 3/A is low complexity because it contains no reported transactions, no financial tables, and no earnings data. It mainly updates insider status information for John S. Koudounis at CALAMOS CONVERTIBLE & HIGH INCOME FUND.

What is the net buy or sell position reported in the CHY Form 3/A?

The Form 3/A shows a neutral net position for John S. Koudounis, with net buy or sell shares reported as zero and all transaction direction counts—buy, sell, acquire, and dispose—recorded as zero.