NYSE: TSE
Trinseo PLC Stock Ownership - Who owns Trinseo?

Insider buying vs selling

Have Trinseo PLC insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Johanna FrischVP AND TREASURER2025-03-141,500$4.10
$6.15kBuy
Johanna FrischVP AND TREASURER2025-03-131,100$4.02
$4.42kBuy
Johanna FrischVP AND TREASURER2025-03-121,200$4.28
$5.14kBuy
Rainer ScheweSVP SUPPLY CHAIN MFG SVCS2025-02-221,566$5.52
$8.64kSell
Frank A. BozichCEO AND PRESIDENT2025-02-2218,795$5.52
$103.75kSell
Arthas Bing YangSVP Latex Binders2025-02-212,844$5.52
$15.70kSell
Angelo N. ChaclasSVP CLO CCO CORP. SEC.2025-02-213,690$5.52
$20.37kSell
Paula M. CooneySVP CHRO2025-02-217,440$5.52
$41.07kSell
Johanna FrischVP AND TREASURER2025-02-21767$5.52
$4.23kSell
Roger GreeneVP GLOBAL CONTROLLER PAO2025-02-212,238$5.52
$12.35kSell

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Net Insider Buy/Sell (L12M) Ownership

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TSE Shareholders

What type of owners hold Trinseo PLC stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Brian Chu209.09%74,542,370$253.44MInsider
Felix Hauser134.48%47,941,031$163.00MInsider
Aurelien Vasseur134.47%47,939,134$162.99MInsider
Stephen M. Zide104.64%37,305,848$126.84MInsider
Michel Plantevin104.55%37,274,052$126.73MInsider
Seth Meisel104.55%37,272,803$126.73MInsider
Stephen F. Thomas104.55%37,271,464$126.72MInsider
Mg Investment Management Ltd64.78%23,095,132$78.52MInsider
Mg PLC21.39%7,625,044$25.93MInstitution
Nut Tree Capital Management LP9.82%3,500,000$11.90MInstitution

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TSE vs Specialty Chemical Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
TSE6.79%93.21%Net Buying
CMT66.76%26.62%Net SellingNet Selling
ALTO25.02%21.16%Net SellingNet Selling
LWLG25.96%17.84%Net Buying
FEAM19.82%80.18%Net Buying

Trinseo Stock Ownership FAQ

Who owns Trinseo?

Trinseo (NYSE: TSE) is owned by 70.70% institutional shareholders, 970.39% Trinseo insiders, and 0.00% retail investors. Brian Chu is the largest individual Trinseo shareholder, owning 74.54M shares representing 209.09% of the company. Brian Chu's Trinseo shares are currently valued at $253.44M.

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