Lillian S. Loewenbaum, a 10% stockholder of CollPlant Biotechnologies Ltd, filed a Form 144 on October 27, 2026, giving notice of a proposed sale of 15,550 common shares through Charles Schwab Corp, with an approximate sale date of October 27, 2026.

Key Highlights

  • Seller: Loewenbaum Lilian S., identified as a 10% stockholder of CollPlant Biotechnologies Ltd
  • Shares proposed for sale: 15,550 common shares with an aggregate market value of $58,934.00
  • Total shares outstanding: 12,803,006 common shares, according to the filing
  • Broker named: Charles Schwab Corp, 3000 Schwab Way, Westlake, TX 76262
  • Additional holdings noted: 12,000 shares held via The Loewenbaum Descendents U/A DTD 12/01/1992, and 3,550 shares held via The Waterproof Partnership LTD, both involving George Walter Loewenbaum and Lillian Shaw Loewenbaum
  • No sales in past 3 months: The filing reports nothing to report under securities sold during the past 3 months

CollPlant 10% Stockholder Loewenbaum Files Notice of Proposed Common Share Sale

According to the Form 144 filed with the U.S. Securities and Exchange Commission, Lillian S. Loewenbaum, a 10% stockholder in CollPlant Biotechnologies Ltd (NASDAQ:CLGN), intends to sell 15,550 common shares. The aggregate market value of the proposed sale is listed as $58,934.00, and the approximate date of sale is stated as October 27, 2026. The issuer, CollPlant Biotechnologies Ltd, is headquartered at 4 Oppenheimer St., 11th Floor, Weizmann Science Park, Rehovot, Israel.

The filing identifies multiple acquisition transactions underlying the shares to be sold. These include open market purchases made across several dates, among them July 14, 2020 (650 shares), November 18, 2020 (1,901 shares), December 23, 2022 (3,050 shares), December 31, 2022 (1,976 shares), September 1, 2023 (2 shares), March 25, 2024 (379 shares), July 18, 2024 (500 shares), June 17, 2025 (3,494 shares), June 18, 2025 (903 shares), July 11, 2025 (1,000 shares), and July 14, 2025 (1,000 shares). An additional acquisition dated September 24, 2000 of 695 shares is also listed. All transactions are described as open market purchases paid for in cash.

In the remarks section of the filing, Loewenbaum notes that 12,000 shares are held in the name of The Loewenbaum Descendents U/A DTD 12/01/1992, with George Walter Loewenbaum and Lillian Shaw Loewenbaum as trustees, and that 3,550 shares are held through The Waterproof Partnership LTD, with George Walter Loewenbaum and Lillian Shaw Loewenbaum as partners. The filing reports no securities of the issuer sold during the past three months by the person for whose account the securities are to be sold.

What Was Disclosed

A Form 144 filed October 27, 2026, by 10% stockholder Lillian S. Loewenbaum notifies the SEC of a proposed sale of 15,550 CollPlant Biotechnologies common shares, valued at $58,934.00, through Charles Schwab Corp, with no sales reported in the prior three months.