← United States · Coverage record
US · SEC FORM 4
Trinseo PLC
TSE · OTC · CIK 0001519061 · Basic Materials
INSIDER SIGNAL
0 qualifying P purchase groups
in the current 180-day scoring window
8 Form 4 transaction lines observed in the same window
0 sales · 8 option, withholding, award, gift or other lines
WHY NO ACTIVE SIGNAL?
Score anatomy
No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.
Why is there no score?
- No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
- Sales and other Form 4 activity remain visible as context and do not create a negative score.
Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.
Insider activity timeline
Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.
Showing the six most active owners; 2 additional owner(s) remain in Form 4 evidence.
Purchase breadth, concentration & cluster buying
These modules activate when qualifying purchases enter the 180-day research window.
SIGNAL HISTORY
Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2025-08-14 · FARRELL MATTHEW.
Recent Form 4 activity
P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.
Market context
Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.
Short interest
The FINRA report lists no short interest for this ticker.
FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.
Historical equity purchases
Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.
| Transaction date | Reporting owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2025-08-14 | FARRELL MATTHEW | Purchase (P) | Ordinary Shares | 48,609 | USD 2.43 | USD 118,120 | SEC filing ↗ |
| 2025-08-13 | FARRELL MATTHEW | Purchase (P) | Ordinary Shares | 26,391 | USD 2.45 | USD 64,658 | SEC filing ↗ |
| 2025-08-12 | FARRELL MATTHEW | Purchase (P) | Ordinary Shares | 25,000 | USD 2.29 | USD 57,250 | SEC filing ↗ |
| 2025-03-14 | Frisch Johanna | Purchase (P) | Ordinary Shares | 1,500 | USD 4.10 | USD 6,150 | SEC filing ↗ |
| 2025-03-13 | Frisch Johanna | Purchase (P) | Ordinary Shares | 1,100 | USD 4.02 | USD 4,422 | SEC filing ↗ |
| 2025-03-12 | Frisch Johanna | Purchase (P) | Ordinary Shares | 1,200 | USD 4.28 | USD 5,136 | SEC filing ↗ |
| 2024-08-19 | COTE JEFFREY J | Purchase (P) | Ordinary Shares | 50,600 | USD 3.39 | USD 171,534 | SEC filing ↗ |
| 2024-08-16 | COTE JEFFREY J | Purchase (P) | Ordinary Shares | 100,000 | USD 2.81 | USD 281,000 | SEC filing ↗ |
| 2024-08-12 | Chaclas Angelo N. | Purchase (P) | Ordinary Shares | 75,000 | USD 2.57 | USD 192,750 | SEC filing ↗ |
| 2024-08-12 | BOZICH FRANK A | Purchase (P) | Ordinary Shares | 40,000 | USD 2.57 | USD 102,800 | SEC filing ↗ |
| 2023-12-14 | FARRELL MATTHEW | Purchase (P) | Ordinary Shares | 50,000 | USD 7.21 | USD 360,500 | SEC filing ↗ |
| 2023-09-14 | Stasse David Phillip | Purchase (P) | Ordinary Shares | 15,000 | USD 8.89 | USD 133,350 | SEC filing ↗ |
| 2023-09-13 | Desmond Jeanmarie F. | Purchase (P) | Ordinary Shares | 2,500 | USD 7.94 | USD 19,850 | SEC filing ↗ |
| 2023-09-12 | Thomas Timothy J | Purchase (P) | Ordinary Shares | 3,000 | USD 7.94 | USD 23,820 | SEC filing ↗ |
| 2023-09-12 | Chaclas Angelo N. | Purchase (P) | Ordinary Shares | 20,000 | USD 8.07 | USD 161,400 | SEC filing ↗ |
Form 4 evidence
36 transaction lines in the latest 365-day window; 489 in local history.
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-05-12 | STEINMETZ HENRI | J (J) | Ordinary Shares | 42,484 | USD — | USD — | SEC filing ↗ |
| 2026-05-12 | LIN SANDRA BEACH | J (J) | Ordinary Shares | 42,484 | USD — | USD — | SEC filing ↗ |
| 2026-05-12 | Johnson KLynne | J (J) | Ordinary Shares | 42,484 | USD — | USD — | SEC filing ↗ |
Show recent Form 4 evidence (30 grouped rows)
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-05-12 | STEINMETZ HENRI | J (J) | Ordinary Shares | 42,484 | USD — | USD — | SEC filing ↗ |
| 2026-05-12 | LIN SANDRA BEACH | J (J) | Ordinary Shares | 42,484 | USD — | USD — | SEC filing ↗ |
| 2026-05-12 | Johnson KLynne | J (J) | Ordinary Shares | 42,484 | USD — | USD — | SEC filing ↗ |
| 2026-05-12 | FARRELL MATTHEW | J (J) | Ordinary Shares | 42,484 | USD — | USD — | SEC filing ↗ |
| 2026-05-12 | Desmond Jeanmarie F. | J (J) | Ordinary Shares | 42,484 | USD — | USD — | SEC filing ↗ |
| 2026-05-12 | COTE JEFFREY J | J (J) | Ordinary Shares | 42,484 | USD — | USD — | SEC filing ↗ |
| 2026-05-12 | Brifo Victoria | J (J) | Ordinary Shares | 42,484 | USD — | USD — | SEC filing ↗ |
| 2026-05-12 | ALVARADO JOSEPH | J (J) | Ordinary Shares | 42,484 | USD — | USD — | SEC filing ↗ |
| 2026-02-27 | van Kessel Bregje | Tax withholding (F) | Ordinary Shares | 6,064 | USD 0.23 | USD 1,395 | SEC filing ↗ |
| 2026-02-27 | Yang Arthas Bing | Tax withholding (F) | Ordinary Shares | 2,548 | USD 0.23 | USD 586 | SEC filing ↗ |
| 2026-02-27 | Stasse David Phillip | Tax withholding (F) | Ordinary Shares | 10,366 | USD 0.23 | USD 2,384 | SEC filing ↗ |
| 2026-02-27 | Schewe Rainer | Tax withholding (F) | Ordinary Shares | 4,028 | USD 0.23 | USD 926 | SEC filing ↗ |
| 2026-02-27 | Reverberi Francesca | Tax withholding (F) | Ordinary Shares | 1,385 | USD 0.23 | USD 319 | SEC filing ↗ |
| 2026-02-27 | Hendriks Han | Tax withholding (F) | Ordinary Shares | 7,707 | USD 0.23 | USD 1,773 | SEC filing ↗ |
| 2026-02-27 | Greene Roger | Tax withholding (F) | Ordinary Shares | 2,517 | USD 0.23 | USD 579 | SEC filing ↗ |
| 2026-02-27 | Cooney Paula M. | Tax withholding (F) | Ordinary Shares | 7,670 | USD 0.23 | USD 1,764 | SEC filing ↗ |
| 2026-02-27 | Chaclas Angelo N. | Tax withholding (F) | Ordinary Shares | 7,607 | USD 0.23 | USD 1,750 | SEC filing ↗ |
| 2026-02-27 | BOZICH FRANK A | Tax withholding (F) | Ordinary Shares | 23,680 | USD 0.23 | USD 5,446 | SEC filing ↗ |
| 2026-02-22 | van Kessel Bregje | Tax withholding (F) | Ordinary Shares | 1,335 | USD 0.33 | USD 441 | SEC filing ↗ |
| 2026-02-22 | Yang Arthas Bing | Tax withholding (F) | Ordinary Shares | 547 | USD 0.33 | USD 181 | SEC filing ↗ |
| 2026-02-22 | Stasse David Phillip | Tax withholding (F) | Ordinary Shares | 9,671 | USD 0.33 | USD 3,191 | SEC filing ↗ |
| 2026-02-22 | Schewe Rainer | Tax withholding (F) | Ordinary Shares | 1,206 | USD 0.33 | USD 398 | SEC filing ↗ |
| 2026-02-22 | Reverberi Francesca | Tax withholding (F) | Ordinary Shares | 333 | USD 0.33 | USD 110 | SEC filing ↗ |
| 2026-02-22 | Hendriks Han | Tax withholding (F) | Ordinary Shares | 2,291 | USD 0.33 | USD 756 | SEC filing ↗ |
| 2026-02-22 | Cooney Paula M. | Tax withholding (F) | Ordinary Shares | 2,684 | USD 0.33 | USD 886 | SEC filing ↗ |
| 2026-02-22 | Chaclas Angelo N. | Tax withholding (F) | Ordinary Shares | 7,098 | USD 0.33 | USD 2,342 | SEC filing ↗ |
| 2026-02-22 | BOZICH FRANK A | Tax withholding (F) | Ordinary Shares | 32,602 | USD 0.33 | USD 10,759 | SEC filing ↗ |
| 2026-02-21 | van Kessel Bregje | Tax withholding (F) | Ordinary Shares | 5,963 | USD 0.33 | USD 1,968 | SEC filing ↗ |
| 2026-02-21 | Yang Arthas Bing | Tax withholding (F) | Ordinary Shares | 1,898 | USD 0.33 | USD 626 | SEC filing ↗ |
| 2026-02-21 | Stasse David Phillip | Tax withholding (F) | Ordinary Shares | 5,028 | USD 0.33 | USD 1,659 | SEC filing ↗ |
Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.
Snapshot & identity
| Snapshot date | 2026-10-18 |
|---|---|
| Ranking version | US-v1.2 |
| Data quality | PASS ELIGIBLE · — |
| Ticker | TSE |
| CIK | 0001519061 |
| Sector | Basic Materials |
| Industry | — Yahoo Finance |
| SEC SIC | 2821 Plastic Materials, Synth Resins & Nonvulcan Elastomers |
| Exchange | OTC |
Data coverage
| Local Form 4 history | 489 transaction lines from 2020-02-16 to 2026-05-12 29 P purchase lines · 79 S sale lines · 381 other lines |
|---|---|
| SEC company submissions | Open SEC filings ↗ |
Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.