Trinseo (TSE) Insider Trading & Ownership $2.48 -0.09 (-3.31%) Closing price 09/26/2025 03:58 PM EasternExtended Trading$2.48 0.00 (0.00%) As of 09/26/2025 06:44 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Insider Trades Stock AnalysisChartCompetitorsDividendEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Trinseo (NYSE:TSE) Insider Buying and Selling ActivityCurrentInsider OwnershipPercentage4.50%Number OfInsiders Buying(Last 12 Months)2Amount OfInsider Buying(Last 12 Months)$251.31KNumber OfInsiders Selling(Last 12 Months)0 Get TSE Insider Trade Alerts Want to know when executives and insiders are buying or selling Trinseo stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. 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TSE Insider Buying and Selling by Quarter Trinseo Insider and Congressional Trades History Insiders and Members of Congress Insiders Only Members of Congress Only Transaction Type Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 2 Years 3 Years Time Frame Start Date End Date Export to Excel Transaction DateNameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails8/14/2025Matthew FarrellDirectorBuy48,609$2.43$118,119.87 8/13/2025Matthew FarrellDirectorBuy26,391$2.45$64,657.95 8/12/2025Matthew FarrellDirectorBuy25,000$2.29$57,250.00 3/14/2025Johanna FrischVPBuy1,500$4.10$6,150.00 3/12/2025Johanna FrischVPBuy1,200$4.28$5,136.00 (Data available from 1/1/2013 forward) TSE Insider Trading Activity - Frequently Asked Questions Who is on Trinseo's Insider Roster? The list of insiders at Trinseo includes Angelo N Chaclas, David Phillip Stasse, Frank A Bozich, Jeanmarie F Desmond, Jeffrey J Cote, Johanna Frisch, and Matthew Farrell. Learn more on insiders at TSE. What percentage of Trinseo stock is owned by insiders? 4.50% of Trinseo stock is owned by insiders. Learn more on TSE's insider holdings. Which Trinseo insiders have been buying company stock? The following insiders have purchased TSE shares in the last 24 months: Angelo N Chaclas ($192,750.00), Frank A Bozich ($102,800.00), Jeffrey J Cote ($452,534.00), Johanna Frisch ($11,286.00), and Matthew Farrell ($240,027.82). How much insider buying is happening at Trinseo? Insiders have purchased a total of 368,300 TSE shares in the last 24 months for a total of $999,397.82 bought. Trinseo Key ExecutivesMr. Frank A. Bozich (Age 64)President, CEO & Director Compensation: $1.64MMr. David P. Stasse (Age 54)Executive VP & CFO Compensation: $890.58kMr. Han Hendriksto (Age 57)Senior VP & Chief Technology Officer Compensation: $924.72kMr. Angelo N. Chaclas (Age 60)Senior VP, Chief Legal Officer, Chief Compliance Officer & Corporate Secretary Compensation: $789.84kMs. Paula M. Cooney (Age 55)Senior VP & Chief Human Resources Officer Compensation: $692.69kMr. Roger Greene (Age 47)VP, Controller & Principal Accounting Officer Andrew MyersFinance Director of Corporate FP&A and Director of Investor RelationsMs. Francesca Reverberi (Age 52)Senior VP of Engineered Materials & Chief Sustainability Officer Compensation: $953.23kMs. Lori WilcoxChief Audit ExecutiveMr. Jean-Luc Beal (Age 59)Senior Vice President of Engineered Materials More Insider Trading Tools from MarketBeat Related Companies ARQ Insider Ownership AMTX Insider Ownership LODE Insider Ownership FSI Insider Ownership LOOP Insider Ownership ORGN Insider Ownership CBUS Insider Ownership ALTO Insider Ownership LNZA Insider Ownership SDST Insider Ownership Insider Tracking Tools CEO Purchases/Sales CFO Purchases/Sales Top Insider Buying Stocks Top Insider Selling Stocks Insider Trades Screener Insider Trades Newsletter Congressional Stock Trades Insider Trading By Country U.S. Insider Trading Activity Canadian Insider Trading Activity U.K. Insider Trading Activity Australia Insider Trading Activity Latest Articles NuScale, Rocket Lab Face Heavy Insider Selling After Surges3 Small Caps That Insiders Are Buying $100 Million Buyback in Upwork Stock Follows a Strong Quarter Insiders Sell These High-Quality Stocks: Why Investors Shouldn’tCoreWeave and Madrigal's Insider Trades Flash Bullish Signals This page (NYSE:TSE) was last updated on 9/27/2025 by MarketBeat.com Staff From Our PartnersTrump’s national nightmare is herePorter Stansberry and Jeff Brown say a new U.S. national emergency is already underway — and it could trigger ...Porter & Company | SponsoredHe Called Nvidia at $1.10. 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