Trinseo PLC — All Filings
1,000 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
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 |
|---|---|---|---|---|
| 8-K | FORM 8-K | 0001104659-26-032793 | Mar 20, 2026 | Mar 19, 2026 |
| 8-K | FORM 8-K | 0001104659-26-032165 | Mar 19, 2026 | — |
| 25-NSE | — | 0000876661-26-000266 | Mar 18, 2026 | — |
| 8-K | 8-K | 0001104659-26-027521 | Mar 13, 2026 | — |
| 10-K | 10-K | 0001104659-26-027518 | Mar 13, 2026 | Dec 31, 2025 |
| 4 | — | 0002011504-26-000002 | Mar 3, 2026 | Feb 27, 2026 |
| 4 | — | 0001949985-26-000002 | Mar 3, 2026 | Feb 27, 2026 |
| 4 | — | 0001661138-26-000002 | Mar 3, 2026 | Feb 27, 2026 |
| 4 | — | 0001811002-26-000002 | Mar 3, 2026 | Feb 27, 2026 |
| 4 | — | 0001946359-26-000002 | Mar 3, 2026 | Feb 27, 2026 |
| 4 | — | 0001994764-26-000002 | Mar 3, 2026 | Feb 27, 2026 |
| 4 | — | 0001670565-26-000002 | Mar 3, 2026 | Feb 27, 2026 |
| 4 | — | 0001629821-26-000002 | Mar 3, 2026 | Feb 27, 2026 |
| 4 | — | 0001441657-26-000002 | Mar 3, 2026 | Feb 27, 2026 |
| 4 | — | 0001660737-26-000002 | Mar 3, 2026 | Feb 27, 2026 |
| 8-K | 8-K | 0001104659-26-022537 | Mar 3, 2026 | Mar 2, 2026 |
| 4 | — | 0001811002-26-000001 | Feb 24, 2026 | Feb 21, 2026 |
| 4 | — | 0001946359-26-000001 | Feb 24, 2026 | Feb 21, 2026 |
| 4 | — | 0002011504-26-000001 | Feb 24, 2026 | Feb 21, 2026 |
| 4 | — | 0001949985-26-000001 | Feb 24, 2026 | Feb 21, 2026 |
| 4 | — | 0001661138-26-000001 | Feb 24, 2026 | Feb 21, 2026 |
| 4 | — | 0001670565-26-000001 | Feb 24, 2026 | Feb 21, 2026 |
| 4 | — | 0001994764-26-000001 | Feb 24, 2026 | Feb 21, 2026 |
| 4 | — | 0001441657-26-000001 | Feb 24, 2026 | Feb 21, 2026 |
| 4 | — | 0001660737-26-000001 | Feb 24, 2026 | Feb 22, 2026 |
| 4 | — | 0001629821-26-000001 | Feb 24, 2026 | Feb 21, 2026 |
| SCHEDULE 13G/A | — | 0000919574-26-001251 | Feb 17, 2026 | — |
| 8-K | 8-K | 0001104659-26-015648 | Feb 17, 2026 | Feb 16, 2026 |
| SCHEDULE 13G | — | 0000884546-26-000012 | Feb 12, 2026 | — |
| 3 | — | 0001775666-26-000003 | Jan 20, 2026 | Jan 16, 2026 |
| 3 | — | 0001798190-26-000002 | Jan 20, 2026 | Jan 16, 2026 |
| 8-K | 8-K | 0001104659-26-004782 | Jan 20, 2026 | Jan 16, 2026 |
| 8-K | 8-K | 0001104659-26-002698 | Jan 12, 2026 | Jan 6, 2026 |
| 8-K | 8-K | 0001104659-25-120876 | Dec 15, 2025 | Dec 12, 2025 |
| 8-K | 8-K | 0001104659-25-119859 | Dec 10, 2025 | Dec 5, 2025 |
| 10-Q | 10-Q | 0001104659-25-108273 | Nov 7, 2025 | Sep 30, 2025 |
| 8-K | 8-K | 0001104659-25-107750 | Nov 6, 2025 | — |
| 4 | — | 0001946359-25-000003 | Oct 7, 2025 | Oct 3, 2025 |
| 8-K | 8-K | 0001104659-25-096964 | Oct 6, 2025 | — |
| 8-K | 8-K | 0001104659-25-096616 | Oct 3, 2025 | — |
| 4 | — | 0001904241-25-000002 | Oct 2, 2025 | Sep 30, 2025 |
| 4 | — | 0001994764-25-000003 | Sep 29, 2025 | Sep 25, 2025 |
| 8-K | 8-K | 0001558370-25-011764 | Aug 26, 2025 | — |
| SCHEDULE 13G/A | — | 0000919574-25-004939 | Aug 14, 2025 | — |
| 4 | — | 0001415889-25-021987 | Aug 14, 2025 | Aug 12, 2025 |
| S-8 | S-8 | 0001558370-25-010736 | Aug 7, 2025 | — |
| 10-Q | 10-Q | 0001558370-25-010698 | Aug 7, 2025 | Jun 30, 2025 |
| 8-K | 8-K | 0001558370-25-010538 | Aug 6, 2025 | — |
| SCHEDULE 13G | — | 0002052113-25-002969 | Jul 17, 2025 | — |
| 4 | — | 0001415889-25-018375 | Jun 27, 2025 | Jun 25, 2025 |