Trinseo PLC — DEFA14A Filings
21 DEFA14A filings on record
This page lists all DEFA14A filings submitted to the SEC by Trinseo PLC (TSEOF), sorted by most recent first. Each row links to the full filing on EdgarLookup. Trinseo PLC has filed 21 DEFA14A documents with the SEC since 2015. To view all SEC filings by Trinseo PLC, see the full filings list.
All
10-K
10-K/A
10-Q
10-Q/A
144
15-12B
25-NSE
3
4
4/A
424B3
424B4
424B7
8-A12B
8-K
8-K/A
8-K12B
ARS
CERTNYS
CORRESP
DEF 14A
DEFA14A
EFFECT
F-1
F-1/A
FWP
PRE 14A
RW
S-1
S-1/A
S-3
S-4
S-4/A
S-8
S-8 POS
SC 13D
SC 13G
SC 13G/A
SC TO-C
SC TO-I
SC TO-I/A
SCHEDULE 13G
SCHEDULE 13G/A
SD
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| DEFA14A | DEFA14A | 0001104659-25-040947 | Apr 29, 2025 | — |
| DEFA14A | DEFA14A | 0001558370-24-006121 | Apr 29, 2024 | — |
| DEFA14A | DEFA14A | 0001104659-23-069773 | Jun 9, 2023 | — |
| DEFA14A | DEFA14A | 0001104659-23-060919 | May 15, 2023 | — |
| DEFA14A | DEFA14A | 0001104659-23-054594 | May 2, 2023 | — |
| DEFA14A | DEFA14A | 0001104659-22-049669 | Apr 25, 2022 | — |
| DEFA14A | DEFA14A | 0001104659-21-055654 | Apr 27, 2021 | — |
| DEFA14A | DEFA14A | 0001558370-20-005747 | May 7, 2020 | — |
| DEFA14A | DEFA14A | 0001558370-20-004388 | Apr 27, 2020 | — |
| DEFA14A | DEFA14A | 0001104659-19-034581 | Jun 7, 2019 | — |
| DEFA14A | DEFA14A | 0001104659-19-028667 | May 10, 2019 | — |
| DEFA14A | DEFA14A | 0001558370-18-005245 | Jun 12, 2018 | — |
| DEFA14A | DEFA14A | 0001104659-18-037235 | May 31, 2018 | — |
| DEFA14A | DEFA 14A | 0001193125-17-200797 | Jun 12, 2017 | — |
| DEFA14A | DEFA14A | 0001193125-17-194561 | Jun 5, 2017 | — |
| DEFA14A | 8-K | 0001104659-17-034049 | May 19, 2017 | — |
| DEFA14A | DEFA14A | 0001193125-17-176690 | May 19, 2017 | — |
| DEFA14A | DEFA14A | 0001193125-17-148773 | Apr 28, 2017 | — |
| DEFA14A | DEFA14A | 0001104659-16-117232 | May 3, 2016 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001193125-15-176618 | May 7, 2015 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001193125-15-149754 | Apr 27, 2015 | — |