Clene CLNN Insider Ownership

Updated Oct 10, 2026

Over the past 12 months, Clene insiders bought $216,664 of stock on the open market (33.33K shares) and sold $5.18 million (876.35K shares).

• Among Clene's insiders, the largest open-market purchases in the past 12 months were by David J. Matlin (Director), totaling $216,664 (33.33K shares), most recently on January 13, 2026.
• On the selling side, Chidozie Ugwumba (10% owner) sold the most Clene stock on the open market over the past 12 months, $5.18 million (876.35K shares), most recently on May 4, 2026.
• In transactions other than open-market trades, Clene insiders received 664.53K shares in stock awards over the past 12 months.
• Business Quant data shows Clene insiders holding 2.53Mn shares in total in their latest Form 4 filings, up 34.26% from 1.89Mn shares at the end of Q2 2026.
• Direct holdings account for 1.74Mn shares (68.46%) of CLNN's insider total, and indirect holdings through trusts, partnerships and family members for 799.33K shares (31.54%).
• Holdings in Clene stock are reported by 8 insiders, the officers, directors and 10% owners who have filed a Form 4 in the past two years.
• Clene's three biggest insider holders are David J. Matlin (Director, 919.77K shares), General Resonance LLC (10% owner, 704.59K shares) and Alison Mosca (Director and 10% owner, 480.64K shares), based on their latest Form 4 filings.
• David J. Matlin holds 36.29% of the combined insider position in Clene.
• Institutional holders reported 24.90% of Clene's outstanding shares for Q2 2026; insiders' latest Form 4 filings put their stake at about 19.84%, and other investors, including the public, hold the remaining 55.26%.
• In the past year, 12 insiders of Clene submitted 65 Form 4 filings reporting trades, awards or other transactions.
• The insider holdings and trades above for Clene reflect Form 4 filings through September 18, 2026.