CGO dividend history

METRO CHICAGO, Ill., June 1, 2026 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in June 2026 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. FundDistribution Payable date Record date Ex-dividend dateCHI (inception 06/26/2002)Calamos Convertible Opportunities and Income Fund   $0.09506/22/266/12/266/12/26CHY (inception 05/28/2003)Calamos Convertible and High Income Fund$0.10006/22/266/12/266/12/26CSQ (inception 03/26/2004)Calamos Strategic Total Return Fund$0.12256/22/266/12/266/12/26CGO (inception 10/27/2005)Calamos Global Total Return Fund$0.08006/22/266/12/266/12/26

METRO CHICAGO, Ill., May 1, 2026 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in May 2026 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. FundDistributionPayable dateRecord dateEx-dividend dateCHI (inception 06/26/2002)Calamos Convertible Opportunities and Income Fund$0.09505/21/265/14/265/14/26CHY (inception 05/28/2003)Calamos Convertible and High Income Fund$0.10005/21/265/14/265/14/26CSQ (inception 03/26/2004)Calamos Strategic Total Return Fund$0.12255/21/265/14/265/14/26CGO (inception 10/27/2005)Calamos Global Total Return Fund$0.08005/21/265/14/265/14/26CHW (inc

METRO CHICAGO, Ill., April 1, 2026 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in 2026 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. FundDistribution Payable date Record date Ex- dividenddate CHI (inception 06/26/2002)Calamos Convertible Opportunities and Income Fund     $0.09504/21/264/14/264/14/26CHY (inception 05/28/2003)Calamos Convertible and High Income Fund$0.10004/21/264/14/264/14/26CSQ (inception 03/26/2004)Calamos Strategic Total Return Fund$0.12254/21/264/14/264/14/26CGO (inception 10/27/2005)Calamos Global Total Return Fund$0.08004/21/264/14/264/14/26C

METRO CHICAGO, Ill., March 2, 2026 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in 2026 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. FundDistributionPayable dateRecord dateEx-dividend dateCHI (inception 06/26/2002)Calamos Convertible Opportunities and Income Fund$0.09503/20/263/13/263/13/26CHY (inception 05/28/2003)Calamos Convertible and High Income Fund$0.10003/20/263/13/263/13/26CSQ (inception 03/26/2004)Calamos Strategic Total Return Fund$0.12253/20/263/13/263/13/26CGO (inception 10/27/2005)Calamos Global Total Return Fund$0.08003/20/263/13/263/13/26CHW (incep

METRO CHICAGO, Ill., Feb. 2, 2026 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in 2026 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund   $0.0950 2/23/26 2/13/26 2/13/26 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 2/23/26 2/13/26 2/13/26 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1225 2/23/26 2/13/26 2/13/26 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.0800 2/2

CSQ to Raise Monthly Distribution METRO CHICAGO, Ill., Dec. 18, 2025 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in 2026 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. The Calamos Strategic Total Return Fund (CSQ) will raise its distribution from 10.25 cents per share to 12.25 cents per share payable on January 9, 2026. Representing an approximate 19.5% increase from the prior distribution, the new distribution rate reflects on an annualized basis a current yield of 7.28% based upon the Fund's net asset value of $20.18 per share on December 17, 2025. Fund Distribu

METRO CHICAGO, Ill., Dec. 1, 2025 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in December 2025 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution   Payable date   Record date   Ex-dividend  date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund      $0.0950 12/19/25 12/12/25 12/12/25 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 12/19/25 12/12/25 12/12/25 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 12/19/25 12/12/25 12/12/25 CGO (inception 10/27/2005) Calamos Global T

METRO CHICAGO, Ill., Nov. 3, 2025 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in November 2025 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividenddate CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 11/21/25 11/14/25 11/14/25 CHY (inception 05/28/2003) Calamos Convertible and High Income $0.1000 11/21/25 11/14/25 11/14/25 Fund CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 11/21/25 11/14/25 11/14/25 CGO (inception 10/27/2005) Calamos Global Total Return F

METRO CHICAGO, Ill., Oct. 1, 2025 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in October 2025 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 10/21/25 10/15/25 10/15/25 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 10/21/25 10/15/25 10/15/25 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 10/21/25 10/15/25 10/15/25 CGO (inception 10/27/2005) Calamos Global Total Return F

METRO CHICAGO, Illinois, Sept. 2, 2025 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in September 2025 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund      $0.0950 9/22/25 9/15/25 9/15/25 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 9/22/25 9/15/25 9/15/25 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 9/22/25 9/15/25 9/15/25 CGO (inception 10/27/2005) Calamos Global Total Retur

METRO CHICAGO, Ill., Aug. 1, 2025 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in August 2025 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 8/19/25 8/14/25 8/14/25 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 8/19/25 8/14/25 8/14/25 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 8/19/25 8/14/25 8/14/25 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.080

METRO CHICAGO, Ill., July 1, 2025 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in July 2025 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund   $0.0950   7/21/25   7/14/25   7/14/25 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund   $0.1000   7/21/25   7/14/25   7/14/25 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund   $0.1025   7/21/25   7/14/25   7/14/25 CGO (inception 10/27/2005) Calamos Global To

METRO CHICAGO, Ill., June 2, 2025 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in June 2025 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans.   Fund   Distribution Payable date  Record date  Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund           $0.0950 6/20/25 6/12/25 6/12/25 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 6/20/25 6/12/25 6/12/25 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 6/20/25 6/12/25 6/12/25 CGO (inception 10/27/2005) Calamos Global Total Retu

METRO CHICAGO, Ill., May 1, 2025 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in May 2025 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable Record Ex-dividend date date date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 5/20/25 5/13/25 5/13/25 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 5/20/25 5/13/25 5/13/25 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 5/20/25 5/13/25 5/13/25 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.0800 5/

METRO CHICAGO, Ill., April 1, 2025 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in April 2025 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans.   Fund Distribution   Payable date   Record date   Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 4/21/25  4/11/25  4/11/25 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 4/21/25  4/11/25  4/11/25 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 4/21/25  4/11/25  4/11/25 CGO (inception 10/27/2005) Calamos Global Total Retu

METRO CHICAGO, Ill., March 3, 2025 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in March 2025 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable Record Ex-dividend date date date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 3/20/25 3/13/25 3/13/25 CHY (inception 05/28/2003) Calamos Convertible and High Income $0.1000 3/20/25 3/13/25 3/13/25 Fund CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 3/20/25 3/13/25 3/13/25 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.080

METRO CHICAGO, Ill., Feb. 3, 2025 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in February 2025 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable Record Ex-dividend date date date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 2/21/25 2/13/25 2/13/25 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 2/21/25 2/13/25 2/13/25 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 2/21/25 2/13/25 2/13/25 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.0

METRO CHICAGO, Ill., Dec. 18, 2024 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in January 2025 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 1/10/25 12/30/24 12/30/24 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 1/10/25 12/30/24 12/30/24 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 1/10/25 12/30/24 12/30/24 CGO (inception 10/27/2005) Calamos Global Total Return Fun

METRO CHICAGO, Ill., Dec. 2, 2024 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in December 2024 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 12/19/24 12/13/24 12/13/24 CHY (inception 05/28/2003) Calamos Convertible and High Income $0.1000 12/19/24 12/13/24 12/13/24 Fund CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 12/19/24 12/13/24 12/13/24 CGO (inception 10/27/2005) Calamos Global Total Return

METRO CHICAGO, Ill., Nov. 1, 2024 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in November 2024 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable Record Ex-dividend date date date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 11/20/24 11/13/24 11/13/24 CHY (inception 05/28/2003) Calamos Convertible and High Income $0.1000 11/20/24 11/13/24 11/13/24 Fund CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 11/20/24 11/13/24 11/13/24 CGO (inception 10/27/2005) Calamos Global Total Return

METRO CHICAGO, Ill., Oct. 1, 2024 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in October 2024 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 10/22/24 10/15/24 10/15/24 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 10/22/24 10/15/24 10/15/24 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 10/22/24 10/15/24 10/15/24 CGO (inception 10/27/2005) Calamos Global Total Return F

METRO CHICAGO, Ill., Sept. 3, 2024 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in September 2024 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable Record Ex-dividend date date date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 9/18/24 9/13/24 9/13/24 CHY (inception 05/28/2003) Calamos Convertible and High Income $0.1000 9/18/24 9/13/24 9/13/24 Fund CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 9/18/24 9/13/24 9/13/24 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0

METRO CHICAGO, Ill., Aug. 1, 2024 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in August 2024 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable Record Ex-dividend date date date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 8/16/24 8/9/24 8/9/24 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 8/16/24 8/9/24 8/9/24 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 8/16/24 8/9/24 8/9/24 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.0800 8/16

METRO CHICAGO, July 1, 2024 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in July 2024 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 7/19/24 7/12/24 7/12/24 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 7/19/24 7/12/24 7/12/24 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 7/19/24 7/12/24 7/12/24 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.0800 7/19/2

METRO CHICAGO, Ill., May 1, 2024 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in May 2024 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable Record Ex-dividend date date date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 5/21/24 5/14/24 5/13/24 CHY (inception 05/28/2003) Calamos Convertible and High Income $0.1000 5/21/24 5/14/24 5/13/24 Fund CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 5/21/24 5/14/24 5/13/24 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.0800 5/

METRO CHICAGO, Ill., March 1, 2024 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in March 2024 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable Record Ex-dividend date date date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 4/19/24 4/12/24 4/11/24 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 4/19/24 4/12/24 4/11/24 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 4/19/24 4/12/24 4/11/24 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.080

METRO CHICAGO, Ill., March 1, 2024 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in March 2024 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable Record Ex-dividend date date date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 3/21/24 3/14/24 3/13/24 CHY (inception 05/28/2003) Calamos Convertible and High Income $0.1000 3/21/24 3/14/24 3/13/24 Fund CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 3/21/24 3/14/24 3/13/24 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.080

METRO CHICAGO, Feb. 1, 2024 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in February 2024 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable Record Ex-dividend date date date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 2/20/24 2/12/24 2/9/24 CHY (inception 05/28/2003) Calamos Convertible and High Income $0.1000 2/20/24 2/12/24 2/9/24 Fund CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 2/20/24 2/12/24 2/9/24 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.0800 2/20/

METRO CHICAGO, Ill., Dec. 18, 2023 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in January 2024 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable Record Ex-dividend date date date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 1/11/24 12/29/23 12/28/23 CHY (inception 05/28/2003) Calamos Convertible and High Income $0.1000 1/11/24 12/29/23 12/28/23 Fund CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 1/11/24 12/29/23 12/28/23 CGO (inception 10/27/2005) Calamos Global Total Return Fun

METRO CHICAGO, Ill., Dec. 1, 2023 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in December 2023 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date  Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 12/18/23 12/12/23 12/11/23 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 12/18/23 12/12/23 12/11/23 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 12/18/23 12/12/23 12/11/23 CGO (inception 10/27/2005) Calamos Global Total Return

METRO CHICAGO, Ill., Oct. 2, 2023 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in October 2023 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 10/19/23 10/13/23 10/12/23 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 10/19/23 10/13/23 10/12/23 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 10/19/23 10/13/23 10/12/23 CGO (inception 10/27/2005) Calamos Global Total Return F

METRO CHICAGO, Sept. 1, 2023 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in September 2023 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 9/18/23 9/12/23 9/11/23 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 9/18/23 9/12/23 9/11/23 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 9/18/23 9/12/23 9/11/23 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.0800 9

METRO CHICAGO, Aug. 1, 2023 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in August 2023 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 8/17/23 8/11/23 8/10/23 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 8/17/23 8/11/23 8/10/23 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 8/17/23 8/11/23 8/10/23 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.0800 8/17/

METRO CHICAGO, July 3, 2023 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in July 2023 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable Record Ex-dividend date date date CHI (inception 06/26/2002) Calamos Convertible Opportunities Fund and $0.0950 7/20/23 7/14/23 7/13/23 Income Fund CHY (inception 05/28/2003) Calamos Convertible and High Income $0.1000 7/20/23 7/14/23 7/13/23 Fund CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 7/20/23 7/14/23 7/13/23 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.0800 7/

METRO CHICAGO, Ill., June 1, 2023 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in June 2023 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans.     Fund Distribution Payable Record Ex-dividend date date date CHI (inception 06/26/2002) Calamos Convertible Opportunities Fund and $0.0950 6/16/23 6/12/23 6/9/23 Income Fund CHY (inception 05/28/2003) Calamos Convertible and High Income $0.1000 6/16/23 6/12/23 6/9/23 Fund CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 6/16/23 6/12/23 6/9/23 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.

METRO CHICAGO, Ill., May 1, 2023 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in May 2023 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 5/18/23 5/12/23 5/11/23 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 5/18/23 5/12/23 5/11/23 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 5/18/23 5/12/23 5/11/23 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.0800 5/1

METRO CHICAGO, April 3, 2023 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in April 2023 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 4/20/23 4/14/23 4/13/23 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 4/20/23 4/14/23 4/13/23 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 4/20/23 4/14/23 4/13/23 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.0800 4/20/

METRO CHICAGO, Ill., March 1, 2023 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in March 2023 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date  Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities Fund and  $0.0950 3/20/23 3/14/23 3/13/23 Income Fund CHY (inception 05/28/2003) Calamos Convertible and High Income $0.1000 3/20/23 3/14/23 3/13/23 Fund CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 3/20/23 3/14/23 3/13/23 CGO (inception 10/27/2005) Calamos Global Total Return Fund

CHICAGO, Feb. 1, 2023 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in February 2023 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 2/17/23 2/13/23 2/10/23 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 2/17/23 2/13/23 2/10/23 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 2/17/23 2/13/23 2/10/23 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.0800 2/17/23 2

METRO CHICAGO, Ill., Dec. 19, 2022 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in January 2023 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 1/13/23 12/30/22 12/29/22 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 1/13/23 12/30/22 12/29/22 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 1/13/23 12/30/22 12/29/22 CGO (inception 10/27/2005) Calamos Global Total Return Fund

CHICAGO, Dec. 1, 2022 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in December 2022 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 12/19/22 12/12/22 12/9/22 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 12/19/22 12/12/22 12/9/22 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 12/19/22 12/12/22 12/9/22 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.0800 12/

METRO CHICAGO, Ill., Nov. 1, 2022 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in November 2022 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 11/18/22 11/14/22 11/10/22 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 11/18/22 11/14/22 11/10/22 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 11/18/22 11/14/22 11/10/22 CGO (inception 10/27/2005) Calamos Global Total Return F

METRO CHICAGO, Ill., Oct. 3, 2022 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in October 2022 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 10/20/22 10/14/22 10/13/22 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 10/20/22 10/14/22 10/13/22 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 10/20/22 10/14/22 10/13/22 CGO (inception 10/27/2005) Calamos Global Total Return Fu

METRO CHICAGO, Ill., Sept. 1, 2022 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in September 2022 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 9/20/22 9/13/22 9/12/22 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 9/20/22 9/13/22 9/12/22 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 9/20/22 9/13/22 9/12/22 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.

METRO CHICAGO, Ill., Aug. 1, 2022 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in August 2022 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 8/19/22 8/12/22 8/11/22 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 8/19/22 8/12/22 8/11/22 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 8/19/22 8/12/22 8/11/22 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.1000

METRO CHICAGO, Ill., July 1, 2022 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in July 2022 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002)Calamos Convertible Opportunities and Income Fund $0.0950 7/20/22 7/13/22 7/12/22 CHY (inception 05/28/2003)Calamos Convertible and High Income Fund $0.1000 7/20/22 7/13/22 7/12/22 CSQ (inception 03/26/2004)Calamos Strategic Total Return Fund $0.1025 7/20/22 7/13/22 7/12/22 CGO (inception 10/27/2005)Calamos Global Total Return Fund $0.1000 7/20/

METRO CHICAGO, Ill., June 1, 2022 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in June 2022 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 6/17/22 6/13/22 6/10/22 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 6/17/22 6/13/22 6/10/22 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 6/17/22 6/13/22 6/10/22 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.1000 6

METRO CHICAGO, Ill., May 2, 2022 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in May 2022 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 5/20/22 5/13/22 5/12/22 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 5/20/22 5/13/22 5/12/22 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 5/20/22 5/13/22 5/12/22 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.1000 5/2

NAPERVILLE, Ill., April 1, 2022 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in April 2022 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 4/20/22 4/13/22 4/12/22 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 4/20/22 4/13/22 4/12/22 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 4/20/22 4/13/22 4/12/22 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.1000 4/

NAPERVILLE, Ill., March 1, 2022 /PRNewswire/ -- Calamos Investments®* has announced monthly distributions and sources of distributions paid in March 2022 to shareholders of its seven closed-end funds (the Funds) pursuant to the Funds' respective distribution plans. Fund Distribution Payable date Record date Ex-dividend date CHI (inception 06/26/2002) Calamos Convertible Opportunities and Income Fund $0.0950 3/18/22 3/14/22 3/11/22 CHY (inception 05/28/2003) Calamos Convertible and High Income Fund $0.1000 3/18/22 3/14/22 3/11/22 CSQ (inception 03/26/2004) Calamos Strategic Total Return Fund $0.1025 3/18/22 3/14/22 3/11/22 CGO (inception 10/27/2005) Calamos Global Total Return Fund $0.1000 3/