X0202 SCHEDULE 13G 0001646799 XXXXXXXX LIVE Common stock, par value $0.0001 per share 07/31/2026 0001506492 Nuwellis, Inc. 67113Y603 12988 Valley View Road Eden Prairie MN 55344 Rule 13d-1(c) Mitchell P. Kopin X1 0.00 155536.00 0.00 155536.00 155536.00 N 4.7 HC IN Daniel B. Asher X1 0.00 155536.00 0.00 155536.00 155536.00 N 4.7 HC IN Intracoastal Capital LLC DE 0.00 155536.00 0.00 155536.00 155536.00 N 4.7 OO Nuwellis, Inc. 12988 Valley View Road, Eden Prairie, MN 55344 This Schedule 13G is being filed on behalf of (i) Mitchell P. Kopin, an individual ("Mr. Kopin"), (ii) Daniel B. Asher, an individual ("Mr. Asher") and (iii) Intracoastal Capital LLC, a Delaware limited liability company ("Intracoastal" and together with Mr. Kopin and Mr. Asher, collectively the "Reporting Persons"). The principal business office of Mr. Kopin and Intracoastal is 245 Palm Trail, Delray Beach, Florida 33483. The principal business office of Mr. Asher is 1011 Lake Street, Suite 311, Oak Park, Illinois 60301. Mr. Kopin is a citizen of the United States of America. Mr. Asher is a citizen of the United States of America. Intracoastal is a Delaware limited liability company. Y (i) Immediately following the execution of the Securities Purchase Agreement with the Issuer on July 31, 2026 (the "SPA") (as disclosed in the Form 8-K filed by the Issuer with the Securities and Exchange Commission on August 3, 2026), each of the Reporting Persons may have been deemed to have beneficial ownership of 154,440 shares of Common Stock to be issued to Intracoastal at the closing of the transaction contemplated by the SPA, and all such shares of Common Stock represent beneficial ownership of approximately 7.7% of the Common Stock, based on (1) 1,864,244 shares of Common Stock outstanding as of July 30, 2026, as reported to by the Issuer and (2) 154,440 shares of Common Stock to be issued to Intracoastal at the closing of the transaction contemplated by the SPA. The foregoing excludes (I) 154,440 shares of Common Stock issuable upon exercise of a warrant to be issued to Intracoastal at the closing of the transaction contemplated by the SPA ("Intracoastal Warrant 1") because Intracoastal Warrant 1 contains a blocker provision under which the holder thereof does not have the right to exercise Intracoastal Warrant 1 to the extent (but only to the extent) that such exercise would result in beneficial ownership by the holder thereof, together with the holder's affiliates, and any other persons acting as a group together with the holder or any of the holder's affiliates, of more than 4.99% of the Common Stock, (II) 114 shares of Common Stock issuable upon exercise of a warrant held by Intracoastal ("Intracoastal Warrant 2") because Intracoastal Warrant 2 contains a blocker provision under which the holder thereof does not have the right to exercise Intracoastal Warrant 2 to the extent (but only to the extent) that such exercise would result in beneficial ownership by the holder thereof, together with the holder's affiliates, and any other persons acting as a group together with the holder or any of the holder's affiliates, of more than 4.99% of the Common Stock, (III) 71 shares of Common Stock issuable upon exercise of a second warrant held by Intracoastal ("Intracoastal Warrant 3") because Intracoastal Warrant 3 contains a blocker provision under which the holder thereof does not have the right to exercise Intracoastal Warrant 3 to the extent (but only to the extent) that such exercise would result in beneficial ownership by the holder thereof, together with the holder's affiliates, and any other persons acting as a group together with the holder or any of the holder's affiliates, of more than 4.99% of the Common Stock, (IV) 55 shares of Common Stock issuable upon exercise of a third warrant held by Intracoastal ("Intracoastal Warrant 4") because Intracoastal Warrant 4 contains a blocker provision under which the holder thereof does not have the right to exercise Intracoastal Warrant 4 to the extent (but only to the extent) that such exercise would result in beneficial ownership by the holder thereof, together with the holder's affiliates, and any other persons acting as a group together with the holder or any of the holder's affiliates, of more than 4.99% of the Common Stock, (V) 680 shares of Common Stock issuable upon exercise of a fourth warrant held by Intracoastal ("Intracoastal Warrant 5") because Intracoastal Warrant 5 contains a blocker provision under which the holder thereof does not have the right to exercise Intracoastal Warrant 5 to the extent (but only to the extent) that such exercise would result in beneficial ownership by the holder thereof, together with the holder's affiliates, and any other persons acting as a group together with the holder or any of the holder's affiliates, of more than 4.99% of the Common Stock, (VI) 88 shares of Common Stock issuable upon exercise of a fifth warrant held by Intracoastal ("Intracoastal Warrant 6") because Intracoastal Warrant 6 contains a blocker provision under which the holder thereof does not have the right to exercise Intracoastal Warrant 6 to the extent (but only to the extent) that such exercise would result in beneficial ownership by the holder thereof, together with the holder's affiliates, and any other persons acting as a group together with the holder or any of the holder's affiliates, of more than 4.99% of the Common Stock and (VII) 88 shares of Common Stock issuable upon exercise of a sixth warrant held by Intracoastal ("Intracoastal Warrant 7") because Intracoastal Warrant 7 contains a blocker provision under which the holder thereof does not have the right to exercise Intracoastal Warrant 7 to the extent (but only to the extent) that such exercise would result in beneficial ownership by the holder thereof, together with the holder's affiliates, and any other persons acting as a group together with the holder or any of the holder's affiliates, of more than 4.99% of the Common Stock. Without such blocker provisions, each of the Reporting Persons may have been deemed to have beneficial ownership of 309,976 shares of Common Stock. (ii) As of the close of business on August 6, 2025, each of the Reporting Persons may have been deemed to have beneficial ownership of 155,536 shares of Common Stock, which consisted of (i) 154,440 shares of Common Stock issuable upon exercise of Intracoastal Warrant 1, (ii) 114 shares of Common Stock issuable upon exercise of Intracoastal Warrant 2, (iii) 71 shares of Common Stock issuable upon exercise of Intracoastal Warrant 3, (iv) 55 shares of Common Stock issuable upon exercise of Intracoastal Warrant 4, (v) 680 shares of Common Stock issuable upon exercise of Intracoastal Warrant 5, (vi) 88 shares of Common Stock issuable upon exercise of Intracoastal Warrant 6 and (vii) 88 shares of Common Stock issuable upon exercise of Intracoastal Warrant 7, and all such shares of Common Stock represent beneficial ownership of approximately 4.7% of the Common Stock, based on (1) 1,864,244 shares of Common Stock outstanding as of July 30, 2026, as reported to by the Issuer, plus (2) 1,310,890 shares of Common Stock in the aggregate issued at the closing of the transaction contemplated by the SPA, (3) 154,440 shares of Common Stock issuable upon exercise of Intracoastal Warrant 1, (4) 114 shares of Common Stock issuable upon exercise of Intracoastal Warrant 2, (5) 71 shares of Common Stock issuable upon exercise of Intracoastal Warrant 3, (6) 55 shares of Common Stock issuable upon exercise of Intracoastal Warrant 4, (7) 680 shares of Common Stock issuable upon exercise of Intracoastal Warrant 5, (8) 88 shares of Common Stock issuable upon exercise of Intracoastal Warrant 6 and (9) 88 shares of Common Stock issuable upon exercise of Intracoastal Warrant 7 4.7 0 155,536 0 155,536 N Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above 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. Exhibit 1 - Joint Filing Agreement Mitchell P. Kopin /s/ Mitchell P. Kopin 08/06/2026 Daniel B. Asher /s/ Daniel B. Asher 08/06/2026 Intracoastal Capital LLC /s/ Mitchell P. Kopin 08/06/2026