VivoSim Labs VIVS Insider Ownership

Updated Oct 10, 2026

Over the past 12 months, VivoSim Labs insiders bought $2,804 of stock on the open market (10K shares) and sold $7,300 (3.27K shares).

• Among VivoSim Labs' insiders, the largest open-market purchases in the past 12 months were by Tony Serge Lialin (Chief Commercial Officer), totaling $2,804 (10K shares), most recently on August 31, 2026.
• On the selling side, David Gobel (Director) sold the most VivoSim Labs stock on the open market over the past 12 months, $7,300 (3.27K shares), most recently on November 17, 2025.
• Outside the open market, VivoSim Labs insiders received 15K shares in stock awards over the past 12 months.
• Per Business Quant, VIVS insiders together hold 111.75K shares based on their latest Form 4 filings, up 4.78% from 106.65K shares at the end of Q2 2026.
• Indirect holdings, through trusts, partnerships, family members and other entities, make up 0.15% (166 shares) of VivoSim Labs' insider total, with the other 99.85% (111.58K shares) held directly.
• Per Business Quant, 6 insiders of VIVS hold shares, counting officers, directors and 10% owners who have filed a Form 4 in the past two years.
• VivoSim Labs' top three insider holders by shares held are Keith Murphy (Executive Chairman, 26.05K shares), Douglas Jay Cohen (Director, 20.9K shares) and Adam K. Stern (Director, 19.9K shares).
• The largest insider, Keith Murphy, holds 23.31% of VIVS's insider total.
• Institutions held 0.70% of VivoSim Labs' outstanding shares in their Q2 2026 13F filings, insiders about 0.75% based on their latest Form 4 filings, and other investors, including the public, the remaining 98.55%.
• Over the trailing 12 months, 7 insiders reported transactions in VIVS stock across 8 Form 4 filings.
• Insider figures for VIVS include Form 4 filings through September 1, 2026.