07/17/2025
6:44 PM | BlackRock, Inc. (Filed by)
Trinseo (Subject)
| Form SCHEDULE 13G | |
06/26/2025
8:22 AM | Trinseo (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
06/24/2025
3:15 PM | ALVARADO JOSEPH (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
06/24/2025
3:15 PM | Desmond Jeanmarie F. (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
06/24/2025
3:15 PM | Johnson KLynne (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
06/24/2025
3:15 PM | Brifo Victoria (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
06/24/2025
3:15 PM | COTE JEFFREY J (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
06/24/2025
3:15 PM | De Leener Pierre-Marie (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
06/24/2025
3:15 PM | FARRELL MATTHEW (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
06/24/2025
3:15 PM | LIN SANDRA BEACH (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
06/24/2025
3:15 PM | STEINMETZ HENRI (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
Get the Latest News and Ratings for TSE and Related Stocks Enter your email address below to receive the latest news and analysts' ratings for Trinseo and its competitors with MarketBeat's FREE daily newsletter. |
06/24/2025
3:15 PM | TOMKINS MARK E (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/08/2025
11:21 AM | Trinseo (Filer)
| Form 10-Q
General form for quarterly reports under Section 13 or 15(d) | |
05/07/2025
4:26 PM | Trinseo (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
04/29/2025
11:23 AM | Trinseo (Filer)
| Form DEF 14A | |
04/29/2025
11:26 AM | Trinseo (Filer)
| Form DEFA14A | |
04/29/2025
11:30 AM | Trinseo (Filer)
| Form ARS | |
04/18/2025
12:18 PM | Trinseo (Filer)
| Form PRE 14A | |
03/20/2025
3:30 PM | Trinseo (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
03/14/2025
2:14 PM | Frisch Johanna (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/03/2025
2:50 PM | Trinseo (Issuer)
Yang Arthas Bing (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/03/2025
2:51 PM | Trinseo (Issuer)
van Kessel Bregje (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/03/2025
2:52 PM | Stasse David Phillip (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/03/2025
2:52 PM | Schewe Rainer (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/27/2025
10:53 AM | Trinseo (Filer)
| Form 10-K
Annual report pursuant to Section 13 or 15(d) | |
02/25/2025
11:52 AM | Reverberi Francesca (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/25/2025
11:53 AM | Trinseo (Issuer)
van Kessel Bregje (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/25/2025
11:54 AM | Trinseo (Issuer)
Yang Arthas Bing (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/25/2025
11:46 AM | BOZICH FRANK A (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/25/2025
11:47 AM | Chaclas Angelo N. (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/25/2025
11:47 AM | Cooney Paula M. (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/25/2025
11:48 AM | Frisch Johanna (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/25/2025
11:49 AM | Greene Roger (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/25/2025
11:50 AM | Hendriks Han (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/25/2025
11:50 AM | Schewe Rainer (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/25/2025
11:51 AM | Stasse David Phillip (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/12/2025
3:24 PM | Trinseo (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
01/21/2025
5:31 AM | Trinseo (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
01/17/2025
4:09 PM | Trinseo (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
01/16/2025
5:30 AM | Trinseo (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
12/17/2024
4:11 PM | CastleKnight Master Fund LP (Filed by)
Trinseo (Subject)
| Form SC 13G | |
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12/17/2024
5:00 AM | Trinseo (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
12/11/2024
5:01 AM | Trinseo (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
12/10/2024
5:45 AM | Trinseo (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
12/03/2024
4:29 PM | Cooney Paula M. (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
11/07/2024
10:18 AM | Trinseo (Filer)
| Form 10-Q
General form for quarterly reports under Section 13 or 15(d) | |
11/06/2024
4:19 PM | Trinseo (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
10/07/2024
4:02 PM | Trinseo (Filer)
| Form 8-K/A | |
10/07/2024
1:51 PM | Hendriks Han (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
09/30/2024
3:20 PM | Trinseo (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
09/27/2024
10:56 AM | Greene Roger (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
09/24/2024
2:18 PM | Frisch Johanna (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/20/2024
9:24 AM | COTE JEFFREY J (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/14/2024
8:28 AM | Chaclas Angelo N. (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/14/2024
8:29 AM | BOZICH FRANK A (Reporting)
Trinseo (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/13/2024
5:22 PM | TOMKINS MARK E (Reporting)
Trinseo (Subject)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
08/07/2024
11:39 AM | Trinseo (Filer)
| Form 10-Q
General form for quarterly reports under Section 13 or 15(d) | |
08/06/2024
3:27 PM | Trinseo (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
07/22/2024
4:22 PM | Trinseo (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
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