SCHEDULE 13G/A 0001140361-24-047010 0002044902 XXXXXXXX LIVE 1 Common Shares, par value $0.001 per share 03/31/2025 0001995574 Icon Energy Corp Y4001C206 c/o Pavimar Shipping Co. 17th km National Road, Athens-Lamia & Fo Athens J3 14564 Rule 13d-1(d) Atlantis Holding Corp. /RMI/ 1T 0 7178120 0 7178120 7178120 N 76.7 CO (1) This amount includes (i) 5,000 Common Shares, par value $0.001 per share of Icon Energy Corp. ("Common Shares") and (ii) 7,173,120 Common Shares that may be deemed to be beneficially owned by the Reporting Person as of April 24, 2025, issuable upon the hypothetical conversion of 15,000 9.00% Series A Cumulative Convertible Perpetual Preferred Shares of Icon Energy Corp. ("Series A Preferred Shares"). All 15,000 Series A Preferred Shares (but not a portion) are convertible to Common Shares commencing July 16, 2025 and until July 15, 2032. (2) This percentage is calculated pursuant to Rule 13d-3(d)(1)(i) using a figure of 9,358,350 Common Shares outstanding, which consists of (i) 2,185,230 Common Shares outstanding plus (ii) 7,173,120 Common Shares issuable upon the hypothetical conversion of 15,000 Series A Preferred Shares as of April 24, 2025. Ismini Panagiotidi J3 0 7178120 0 7178120 7178120 N 76.7 IN (1) This amount includes (i) 5,000 Common Shares and (ii) 7,173,120 Common Shares that may be deemed to be beneficially owned by the Reporting Person as of April 24, 2025, issuable upon the hypothetical conversion of 15,000 Series A Preferred Shares. All 15,000 Series A Preferred Shares (but not a portion) are convertible to Common Shares commencing July 16, 2025 and until July 15, 2032. (2) This percentage is calculated pursuant to Rule 13d-3(d)(1)(i) using a figure of 9,358,350 Common Shares outstanding, which consists of (i) 2,185,230 Common Shares outstanding plus (ii) 7,173,120 Common Shares issuable upon the hypothetical conversion of 15,000 Series A Preferred Shares as of April 24, 2025. Icon Energy Corp c/o Pavimar Shipping Co., 17th km National Road, Athens-Lamia & Fo, Athens, Greece, 14564 This Amendment No. 1 to the Schedule 13G originally filed on November 14, 2024 (the "Original Schedule") is filed jointly by each of the following persons pursuant to a previously filed joint filing agreement attached as Exhibit A to the Original Schedule: Atlantis Holding Corp. Ismini Panagiotidi Atlantis Holding Corp. c/o Pavimar Shipping Co. 17th km National Road Athens-Lamia & Foinikos Str. 14564, Nea Kifissia, Athens, Greece Ismini Panagiotidi c/o Pavimar Shipping Co. 17th km National Road Athens-Lamia & Foinikos Str. 14564, Nea Kifissia, Athens, Greece Atlantis Holding Corp. - Republic of the Marshall Islands Ismini Panagiotidi - Greece Atlantis Holding Corp. - 7,178,120 Ismini Panagiotidi - 7,178,120 The amount of beneficially owned Common Shares for each Reporting Person includes (i) 5,000 Common Shares and (ii) 7,173,120 Common Shares that may be deemed to be beneficially owned by each Reporting Person as of April 24, 2025, issuable upon the hypothetical conversion of 15,000 Series A Preferred Shares. All 15,000 Series A Preferred Shares (but not a portion) are convertible to Common Shares commencing July 16, 2025 and until July 15, 2032. Atlantis Holding Corp. - 76.7% Ismini Panagiotidi - 76.7% The percentages are calculated pursuant to Rule 13d-3(d)(1)(i) using a figure of 9,358,350 Common Shares outstanding, which consists of (i) 2,185,230 Common Shares outstanding plus (ii) 7,173,120 Common Shares issuable upon the hypothetical conversion of 15,000 Series A Preferred Shares as of April 24, 2025. Atlantis Holding Corp. - 0 Ismini Panagiotidi - 0 Atlantis Holding Corp. - 7,178,120 Ismini Panagiotidi - 7,178,120 Atlantis Holding Corp. - 0 Ismini Panagiotidi - 0 Atlantis Holding Corp. - 7,178,120 Ismini Panagiotidi - 7,178,120 Y Y Y Y Y Atlantis Holding Corp. /RMI/ /s/ Ismini Panagiotidi 04/25/2025 Ismini Panagiotidi /s/ Ismini Panagiotidi 04/25/2025 * The Reporting Person specifically disclaims beneficial ownership in the securities reported herein except to the extent of its or her pecuniary interest therein. The original statement shall be signed by each person on whose behalf the statement is filed or such person's authorized representative. If the statement is signed on behalf of a person by such person's authorized representative other than an executive officer or general partner of the filing person, evidence of the representative's authority to sign on behalf of such person shall be filed with the statement; provided, however, that a power of attorney for this purpose which is already on file with the Commission may be incorporated by reference. The name and any title of each person who signs the statement shall be typed or printed beneath such person's signature. Attention: Intentional misstatements or omissions of fact constitute Federal criminal violations (see 18 U.S.C. 1001).