PINK:TSEOF

Trinseo Stock Insider Trading

*Your capital is at risk

$0.0130

+0 (+0%)

At Close: Aug 10, 2026

Trinseo Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 79.15. In total, the insiders bought 1.72M and sold 378.86K TSEOF shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	79.15
● Buy	1.72M shares
● Sell	378.86K shares
34% Buy Activity Strong Positive Correlation
Sell Signal Low Confidence Aug 10, 2026 Analysis Breakdown: Signal is highly questionable due to a strongly contradictory positive Insider Power Score of 79.15. Partially supported by a positive historical correlation. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Feb 21, 2026 Sell	Ordinary Shares F-InKind	Greene Roger Vp, Global Controller & Pao	Officer	2 238 Value: $733
Feb 21, 2026 Sell	Ordinary Shares F-InKind	Stasse David Phillip EVP And CFO	C-Suite Officer	5 028 Value: $2K
Feb 21, 2026 Sell	Ordinary Shares F-InKind	Chaclas Angelo N. SVP, Clo, Cco & Corp. Sec.	Officer	3 690 Value: $1K
Jan 16, 2026 Buy	Common Stock J-Other	Flaton Carol Insider	Other	0 Value: $0
Jan 16, 2026 Buy	Common Stock J-Other	Frizzley Jill Kathleen Insider	Other	0 Value: $0
Oct 03, 2025 Sell	Ordinary Shares F-InKind	Hendriks Han SVP, Chief Technology Officer	Officer	2 067 Value: $5K
Sep 30, 2025 Sell	Ordinary Shares F-InKind	Frisch Johanna Vp And Treasurer	Officer	2 194 Value: $5K
Sep 25, 2025 Sell	Ordinary Shares F-InKind	Greene Roger Vp, Global Controller & Pao	Officer	1 617 Value: $4K
Aug 14, 2025 Buy	Ordinary Shares P-Purchase	Farrell Matthew Director	Director	48 609 Value: $118.1K
Aug 13, 2025 Buy	Ordinary Shares P-Purchase	Farrell Matthew Director	Director	26 391 Value: $64.7K
Aug 12, 2025 Buy	Ordinary Shares P-Purchase	Farrell Matthew Director	Director	25 000 Value: $57.3K
Jun 25, 2025 Buy	Ordinary Shares A-Award	Alvarado Joseph Director	Director	42 484 Value: $136.4K
Jun 25, 2025 Buy	Ordinary Shares A-Award	Lin Sandra Beach Director	Director	42 484 Value: $136.4K
Jun 25, 2025 Buy	Ordinary Shares A-Award	Brifo Victoria Director	Director	42 484 Value: $136.4K
Jun 25, 2025 Buy	Ordinary Shares A-Award	Cote Jeffrey J Director	Director	42 484 Value: $136.4K
Jun 25, 2025 Buy	Ordinary Shares A-Award	Desmond Jeanmarie F. Director	Director	42 484 Value: $136.4K
Jun 25, 2025 Buy	Ordinary Shares A-Award	Farrell Matthew Director	Director	42 484 Value: $136.4K
Jun 25, 2025 Buy	Ordinary Shares A-Award	Johnson Klynne Director	Director	42 484 Value: $136.4K
Jun 25, 2025 Buy	Ordinary Shares A-Award	Steinmetz Henri Director	Director	42 484 Value: $136.4K
Jun 21, 2025 Sell	Ordinary Shares F-InKind	Tomkins Mark E Director	Director	10 105 Value: $37.7K
Jun 21, 2025 Sell	Ordinary Shares F-InKind	Steinmetz Henri Director	Director	20 001 Value: $74.6K
Jun 21, 2025 Sell	Ordinary Shares F-InKind	Farrell Matthew Director	Director	9 576 Value: $35.7K
Jun 21, 2025 Sell	Ordinary Shares F-InKind	Lin Sandra Beach Director	Director	10 310 Value: $38.5K
Jun 21, 2025 Sell	Ordinary Shares F-InKind	De Leener Pierre-marie Director	Director	20 001 Value: $74.6K
Jun 21, 2025 Sell	Ordinary Shares F-InKind	Cote Jeffrey J Director	Director	10 310 Value: $38.5K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks