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OTC · Basic materials

Trinseo PLC (TSEOQ)

Trinseo PLC brought in $3B of revenue over the twelve months to June 30, 2026, down 8.7% from a year earlier. It posted a net loss of $596.6M. In fiscal 2025 capital spending exceeded operating cash flow by $153.4M. At June 30, 2026 it held $181.4M in cash against $3B of debt. Its latest periodic report to the SEC is the quarterly report (10-Q) filed on August 6, 2026.

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Price
$0.01
0.00% on the day · September 25, 2026
52-week range $0.00 to $2.53
Market cap
$475.3K
Revenue (last 12 months)
$3B
-8.7% year on year
Net margin
-20.0%

What Trinseo PLC does

Trinseo PLC is registered with the SEC under industry code SIC 2821 (Plastic Materials, Synth Resins & Nonvulcan Elastomers). Its shares trade on OTC under the ticker TSEOQ.

Revenue and profit by year

Revenue
FY18: $4.6B $4.6B FY18FY19: $3.4B $3.4B FY19FY20: $2.7B $2.7B FY20FY21: $4.8B $4.8B FY21FY22: $5B $5B FY22FY23: $3.7B $3.7B FY23FY24: $3.5B $3.5B FY24FY25: $3B $3B FY25
Net income
FY18: $292.5M $292.5M FY18FY19: $92M $92M FY19FY20: $7.9M $7.9M FY20FY21: $440M $440M FY21FY22: -$430.9M -$430.9M FY22FY23: -$701.3M -$701.3M FY23FY24: -$348.5M -$348.5M FY24FY25: -$545.6M -$545.6M FY25

Fiscal years as reported in annual reports. Amounts in USD.

Key figures

Fiscal yearRevenueOperating incomeNet incomeDiluted EPSFree cash flow
2025$3B-$254.2M-$545.6M-$15.24-$153.4M
2024$3.5B-$46M-$348.5M-$9.86-$77.5M
2023$3.7B-$455.4M-$701.3M-$19.88$79M
2022$5B-$363.9M-$430.9M-$11.99-$104.7M
2021$4.8B$461.4M$440M$11.12$335M
2020$2.7B$149.6M$7.9M$0.20$188.8M

Full financial statements: income, balance sheet and cash flow

Next report expected around November 12, 2026.

Estimated from its filing rhythm: about 98 days after its last report of August 6, 2026, its usual gap. Not a date the company has announced. See the report calendar

Where TSEOQ ranks in Basic materials

Revenue$3B
#23 of 99 in Basic materials · Top 22%
Revenue growth-15.3%
#80 of 87 in Basic materials · Bottom 8%
Net margin-18.3%
#69 of 87 in Basic materials · Bottom 21%
Free cash flow margin-5.2%
#55 of 72 in Basic materials · Bottom 24%

Latest fiscal year of every company in the sector with the figure reported. Revenue is ranked among companies reporting in US dollars; growth and margins among companies with at least 10 million of revenue. Basic materials

Dividends

Trinseo PLC declared $0.02 per share in fiscal 2025. At the current price that is a yield of 153.85%. It paid out $1.2M in cash dividends.

Fiscal yearPer sharePaid outOf profit
2025$0.02$1.2Mn/a
2024$0.04$1.7Mn/a
2023$0.17$17.9Mn/a
2022$1.28$47.5Mn/a
2021$0.80$21.9M5%
2020$1.28$61.8M782%

Per share as declared (or paid, where only that is reported), adjusted for stock splits the company itself restated. Yield is the latest fiscal year's dividend over the current price.

Latest SEC filings

What Trinseo PLC has filed recently, newest first. Each links to the original document on SEC EDGAR.

  1. September 23, 2026
  2. August 14, 2026
  3. August 7, 2026
  4. August 7, 2026
  5. August 7, 2026
  6. August 6, 2026
    Quarterly report 10-Q · period to June 30, 2026Revenue rose 7.8% to $845.4M versus the same quarter last year; diluted EPS -$3.27 versus -$2.95.
  7. August 6, 2026
  8. July 17, 2026
  9. June 12, 2026
  10. June 1, 2026

Recent insider filings (Forms 3, 4 and 144): 10, the latest on May 14, 2026. Insider transactions on SEC

Insider trades

What the people running Trinseo PLC did with its shares, from the Form 4 filings they must send the SEC within two business days.

No insider trades were reported in the last 90 days.

Bought (open market)
$0
last 90 days
Sold
$0
last 90 days
DateInsiderWhatSharesPriceValueFiling
May 12, 2026 Alvarado JosephDirector Other change 42,484 - - Form 4
May 12, 2026 Farrell MatthewDirector Other change 42,484 - - Form 4
May 12, 2026 Cote Jeffrey JDirector Other change 42,484 - - Form 4
May 12, 2026 Steinmetz HenriDirector Other change 42,484 - - Form 4
May 12, 2026 Lin Sandra BeachDirector Other change 42,484 - - Form 4
May 12, 2026 Johnson KLynneDirector Other change 42,484 - - Form 4
May 12, 2026 Desmond Jeanmarie F.Director Other change 42,484 - - Form 4
May 12, 2026 Brifo VictoriaDirector Other change 42,484 - - Form 4
February 27, 2026 van Kessel BregjeSVP, Corporate Finance & IR Shares withheld for tax 6,064 $0.23 $1.4K Form 4
February 27, 2026 Yang Arthas BingSVP, Latex Binders Shares withheld for tax 2,548 $0.23 $586 Form 4

All insider filings on SEC.gov · Where insiders are buying across the market

Who owns TSEOQ

Three views from three kinds of SEC filings, each with its own date. They overlap and are not added up.

5% holders

Anyone who owns more than 5% of a class of shares must say so on Schedule 13D (if they may seek to influence the company) or 13G (a passive holder). The latest filing of each holder is shown: 13G filings of the last 2 years, 13D of the last 3.

HolderOf classSharesFiled
Nut Tree Capital Management, LP13G, passive with 2 related filers 8.3% 3,027,280 May 15, 2026
Charles Schwab Investment Management Inc13G, passive 5.8% 2,091,125 February 12, 2026

Latest filings below 5%: CastleKnight Master Fund LP 1.4% (February 17, 2026).

Largest institutional holders

No Form 13F positions imported for this company yet.

Insiders

Reported holdings of insiders who filed a Form 4 in the last 12 months: the shares each one held after their latest reported transaction. This is not the total held by all insiders.

10 insiders reported holding 687,331 shares in total, about $8.9K at the last price.

HolderSharesAs of
Farrell MatthewDirector 207,741 May 12, 2026
van Kessel BregjeSVP, Corporate Finance & IR 98,296 February 27, 2026
Steinmetz HenriDirector 53,453 May 12, 2026
Alvarado JosephDirector 52,187 May 12, 2026
Yang Arthas BingSVP, Latex Binders 49,457 February 27, 2026
Johnson KLynneDirector 48,429 May 12, 2026
Desmond Jeanmarie F.Director 46,552 May 12, 2026
Cote Jeffrey JDirector 45,699 May 12, 2026
Lin Sandra BeachDirector 44,776 May 12, 2026
Brifo VictoriaDirector 40,741 May 12, 2026

Schedule 13D/13G filings on SEC.gov

All filings on SEC EDGAR

Questions about TSEOQ

What does Trinseo PLC do?

Trinseo PLC is registered with the SEC under industry code SIC 2821 (Plastic Materials, Synth Resins & Nonvulcan Elastomers). Its shares trade on OTC under the ticker TSEOQ.

Is Trinseo PLC profitable?

No. Over the twelve months to June 30, 2026 it reported a net loss of $596.6M on revenue of $3B.

How much revenue does Trinseo PLC make?

Over the twelve months to June 30, 2026 Trinseo PLC reported revenue of $3B. That is 8.7% less than a year earlier.

When did Trinseo PLC last report?

Its most recent periodic report is the quarterly report (10-Q) filed on August 6, 2026. It covers the period to June 30, 2026. Its newest filing of any kind is the shareholder vote results from September 23, 2026.

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Where the numbers come from

Financial figures are the values Trinseo PLC tagged in its own SEC filings (XBRL), taken from the latest filing for each period, so restatements replace older figures. Revenue, profit and cash flow are for full fiscal years unless marked as the last twelve months, which is the sum of the four most recent quarters. Where a company reports only the full year, the fourth quarter is the year minus the first three.

Prices are delayed end-of-day market data in the listing currency, and market cap moves with the price. P/E is shown only when earnings per share are positive. Nothing here is investment advice.