{"url_path":"/sec/glsi/10-k/2026/item-12","section_key":"item-12","section_title":"Item 12 SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS**","topic":"sec","document":{"doc_type":"10-K","doc_date":"2026-06-01","source_url":"https://www.sec.gov/Archives/edgar/data/1799788/0001493152-26-026651-index.html","accession_number":"0001493152-26-026651","cik":"0001799788","ticker":"GLSI","issuer_name":"Greenwich LifeSciences, Inc.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1799788/0001493152-26-026651-index.html","primary_entity_key":"0001799788","primary_entity_name":"Greenwich LifeSciences, Inc."},"word_count":763,"has_tables":true,"body_markdown":"**ITEM\n12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS**\n\n \n\nThe\nfollowing table sets forth certain information regarding the beneficial ownership of our common stock as of May 26, 2026 by:\n\n \n\n \n●\neach\nof our named executive officers;\n\n \n \n \n\n \n●\neach\nof our directors;\n\n \n \n \n\n \n●\nall\nof our current directors and executive officers as a group; and\n\n \n \n \n\n \n●\neach\nstockholder known by us to own beneficially more than 5% of our common stock.\n\n \n\nBeneficial\nownership is determined in accordance with the rules of the SEC and includes voting or investment power with respect to the securities.\nShares of common stock that may be acquired by an individual or group within 60 days of May 26, 2026, pursuant to the exercise\nof options or warrants, vesting of common stock or conversion of preferred stock or convertible debt, are deemed to be outstanding for\nthe purpose of computing the percentage ownership of such individual or group, but are not deemed to be outstanding for the purpose of\ncomputing the percentage ownership of any other person shown in the table. Percentage of ownership is based on 14,678,208 shares\nof common stock issued and outstanding as of May 26, 2026.\n\n \n\nExcept\nas indicated in footnotes to this table, we believe that the stockholders named in this table have sole voting and investment power with\nrespect to all shares of common stock shown to be beneficially owned by them, based on information provided to us by such stockholders.\nUnless otherwise indicated, the address for each director and executive officer listed is: c/o Greenwich LifeSciences, Inc., 3992 Bluebonnet\nDr, Building 14, Stafford, TX 77477.\n\n \n\n64\n\n[Table of Contents](#toc_001)\n\n \n\nName of Beneficial Owner \nShares of Common Stock Beneficially Owned  \n**Percentage (6)** \n\nExecutive officers and directors: \n    \n   \n\nSnehal Patel \n 6,345,216(1)  \n 41.15%\n\nF. Joseph Daugherty \n 123,896(2)  \n  *\n\nDavid McWilliams \n 724,348(3)  \n 4.90%\n\nEric Rothe \n 382,642(4)  \n 2.59%\n\nKenneth Hallock \n 466,720(5)  \n 3.16%\n\nAll current named executive officers and directors as a group (5) persons \n 8,042,822  \n 51.19%\n\n \n\n*\nRepresents\nbeneficial ownership of less than 1%\n\n \n\n(1)\n\nConsists\nof (i) 1,342,679 shares of common stock owned by Snehal Patel, (ii) 1,510,563 shares of common\nstock owned by Snehal Patel IRA, (iii) 34,500 shares of common stock owned by Snehal Patel\n401k (iv) 919,234 shares of common stock owned by Patel Family Trust 1, (v) 830,631 shares\nof common stock owned by Patel Family Trust 2, (vi) 830,630 shares of common stock owned\nby Patel Family Trust 3, and (vii) 135,865 shares of common stock owned by Kinnary Patel\nIRA. Includes 741,114 shares of common stock exercisable upon exercise of vested stock options\nand stock options that vest within 60 days. Snehal Patel and Kinnary Patel, the spouse of\nSnehal Patel, hold voting and dispositive power over the securities held in the Patel Family\nTrust 1, Patel Family Trust 2 and Patel Family Trust 3. Snehal Patel is the Trustee of the\nSnehal Patel IRA. Kinnary Patel is the Trustee of the Kinnary Patel IRA. In such capacities,\nSnehal Patel is deemed to hold voting and dispositive power over the securities held by such\nentities.\n\n \n \n\n(2)\nIncludes\n33,763 shares of common stock exercisable upon exercise of vested stock options and stock options that vest within 60\ndays.\n\n \n \n\n(3)\nIncludes\n104,020 shares of common stock exercisable upon exercise of vested stock options and stock options that vest within 60 days.\n\n \n \n\n(4)\nIncludes\n69,387 shares of common stock exercisable upon exercise of vested stock options and stock options that vest within 60 days.\n\n \n \n\n(5)\nIncludes\n69,387 shares of common stock exercisable upon exercise of vested stock options and stock options that vest within 60 days. Kenneth\nHallock and Annette Hallock are the Trustees of the Hallock Trust and in such capacities share voting and dispositive power over\nthe securities held by such entity.\n\n \n \n\n(6)\n\nTotal shares outstanding as of May 26, 2026, do not exclude 108,208 shares of common stock which were cancelled\non January 10, 2026, due to breaches of agreements by an existing shareholder.\n\n \n\n**Section\n16(A) Beneficial Ownership Reporting Compliance**\n\n \n\nSection\n16(a) of the Exchange Act requires our officers and directors, and persons who own more than ten percent of a registered class of our\nequity securities, to file reports of ownership and changes in ownership with the SEC. Officers, directors and greater than ten percent\nstockholders are required by SEC regulations to furnish us with copies of all Section 16(a) forms they file.\n\n \n\nBased\non a review of the copies of such forms received, we believe that during 2025, all filing requirements applicable to our officers, directors\nand greater than ten percent beneficial owners were complied with."}