X0306 4 2022-05-24 0001171471 CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND CHI 0001529735 MetLife Investment Management, LLC ONE METLIFE WAY WHIPPANY NJ 07981 true Series E Mandatory Redeemable Preferred Shares 2022-05-24 4 P 0 680000 25 A 680000 I See Footnotes These Mandatory Redeemable Preferred Shares are held directly by Metropolitan Life Insurance Company. The Reporting Person serves as investment manager to Metropolitan Life Insurance Company. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose. /s/ Israel Grafstein, Chief Compliance Officer of MetLife Investment Management, LLC 2022-05-26