Ecovyst ECVT Insider Ownership

Updated Oct 10, 2026

Over the trailing 12 months, ECVT insiders bought $249,994 worth of shares (24.88K shares) and sold $238,656 worth (23.45K shares) in open-market trades.

• A count shows one insider buying ECVT stock on the open market over the past 12 months and 2 insiders selling.
• Among ECVT insiders, Patti A. Humble (Director) bought the most stock on the open market in the past 12 months: $249,994 (24.88K shares), most recently on September 10, 2026.
• Meanwhile, the largest open-market sales of ECVT in the past 12 months were by Susan F. Ward (Director), totaling $126,018 (15K shares), most recently on November 7, 2025.
• In transactions other than open-market trades, Ecovyst insiders received 265.25K shares in stock awards, acquired 38.06K shares through option exercises and conversions and gave up 73.39K shares to cover taxes or exercise prices over the past 12 months.
• According to Business Quant data, insiders at Ecovyst reported 2.71Mn shares in total in their latest Form 4 filings, or 2.48% of the 109.47Mn shares outstanding; that total is up 2.58% from 2.64Mn shares at the end of Q2 2026 and down 2.51% from 2.78Mn shares at the end of Q3 2025.
• Direct holdings account for 2.65Mn shares (97.79%) of ECVT's insider total, and indirect holdings through trusts, partnerships and family members for 60K shares (2.21%).
• Per Business Quant, 14 insiders of ECVT hold shares, counting officers, directors and 10% owners who have filed a Form 4 in the past two years.
• ECVT's largest insider holders by reported holdings are Kurt Bitting (Director and officer, 698.38K shares), Joseph S. Koscinski (Officer, 595.78K shares) and Michael Feehan (Officer, 389.07K shares).
• Kurt Bitting alone accounts for 25.77% of the shares held by Ecovyst insiders.
• Over the trailing 12 months, 12 insiders reported transactions in ECVT stock across 22 Form 4 filings.
• The insider holdings and trades above for Ecovyst reflect Form 4 filings through September 14, 2026.