Exhibit 99.1


Press Contact:		Investor Contact:
Trinseo		Trinseo
Matthew Cassidy		Andy Myers
Tel : +1 610-240-3264		Tel : +1 610-240-3221
Email: [email protected]		Email: [email protected]

Trinseo Reports First Quarter 2020 Financial Results; Provides COVID-19 Update

First Quarter 2020 and Other Highlights

Liquidity-focused actions taken in response to COVID-19 to improve the already strong position, including the reduction of capital spending, operating expenses, and working capital, which resulted in quarter-ending cash and cash equivalents of $440 million and Liquidity* of $937 million

Net loss of $36 million and diluted EPS of ($0.94), inclusive of a one-time pre-tax $38 million charge related to the impairment of certain long-lived assets in Boehlen, Germany and Schkopau, Germany, aligned to management’s ongoing strategy implementation; Adjusted EPS of $0.26

Adjusted EBITDA of $57 million, including a $15 million unfavorable impact from net timing


	Three Months Ended
	March 31,
$millions, except per share data	2020		2019
Net Sales	$	854	$	1,013
Net Income (Loss)		(36)		36
EPS (Diluted) ($)		(0.94)		0.86
Adjusted Net Income*		10		46
Adjusted EPS ($)*		0.26		1.09
EBITDA*		(2)		91
Adjusted EBITDA*		57		102

*For a reconciliation of EBITDA, Adjusted EBITDA, and Adjusted Net Income, all of which are non-GAAP measures, to Net Income, as well as a reconciliation of Adjusted EPS and Liquidity, see Notes 2 and 3 to the financial statements included below.

BERWYN, Pa — May 6, 2020 — Trinseo (NYSE: TSE), a global materials company and manufacturer of plastics, latex binders and synthetic rubber, today reported its first quarter 2020 financial results.

“Trinseo has taken proactive steps to minimize the potential impact of the COVID-19 crisis on our employees and other stakeholders, as well as the financial impacts to the Company. Our primary focus has been maintaining a safe and healthy workplace for our approximately 2,700 employees and other stakeholders,” said Frank Bozich, President and Chief Executive Officer of Trinseo. “I’m extremely grateful for our operational personnel and business partners who have enabled the continued, safe operation of all of our facilities that are meeting customer demand, including products that are essential to the recovery from this pandemic.”

Net sales in the first quarter decreased 16% versus prior year. Lower volumes in the Polystyrene, Performance Plastics, Feedstocks, and Synthetic Rubber segments led to an 8% decrease. Lower prices, mainly due to the pass through of lower raw material costs, resulted in a 6% decrease. First quarter net loss of $36 million was $72 million below prior year net income and first quarter Adjusted EBITDA of $57 million, including an unfavorable net timing impact of $15 million, was $45 million below prior year. The net loss included a pre-tax charge of approximately $38 million related to the impairment of certain long-lived assets in Boehlen, Germany and Schkopau, Germany. In March, unrelated to COVID-19, the Company initiated a consultation process with the Economic Council and

Works Councils of Trinseo Deutschland regarding the disposition of these assets. Operationally, profitability was lower than prior year due mainly to lower styrene margins, which impacted the Feedstocks and Americas Styrenics segments, as well as a large planned turnaround at Americas Styrenics’ St. James, Louisiana styrene monomer facility that lasted the majority of the quarter.

Cash used in operating activities for the first quarter was $6 million and capital expenditures were $24 million, resulting in Free Cash Flow for the quarter of negative $30 million. This result included approximately $30 million of spending for our systems and process transition from Dow, which is now largely complete, as well as for plant turnarounds, restructuring, and manufacturing systems upgrades. It also reflected a $15 million increase in net working capital from inventory builds ahead of second quarter turnarounds. The Company repurchased approximately 0.8 million shares in the first quarter for approximately $25 million. The cash balance at the end of the quarter was $440 million. For a reconciliation of Free Cash Flow to cash provided by operating activities, see Note 3 below.

Commenting on the Company’s first quarter performance, Bozich said, “We saw sequential improvements across all of our derivative businesses to start the year, which were partially offset by lower styrene margins and the planned turnaround at Americas Styrenics. The first quarter COVID-19 impacts, which had an adverse impact of approximately $6 million, were primarily related to lower Synthetic Rubber demand in China. I am very proud of our employees as we were able to work safely and meet customer demand under some challenging conditions.”

First Quarter Results and Commentary by Business Segment

Latex Binders net sales of $219 million for the quarter decreased 2% versus prior year as higher volume was more than offset by lower price from the pass through of lower raw material costs. Adjusted EBITDA of $22 million was $4 million higher than prior year due to higher volume in coatings, adhesives, sealants, and elastomers (CASE) applications, which increased 11%, as well as contribution from the Rheinmünster acquisition.

Synthetic Rubber net sales of $102 million for the quarter decreased 18% versus prior year. This was due to both a volume decline of 8%, primarily caused by COVID-19, and a price decline of 7%, mainly from the pass through of lower raw material costs. Adjusted EBITDA of $15 million was $6 million above prior year due mainly to favorable year-over-year net timing as well as higher fixed cost absorption ahead of the planned second quarter turnaround. These impacts were partially offset by lower sales volume.

Performance Plastics net sales of $305 million for the quarter were 17% below prior year due mainly to lower sales volume from an upstream supplier issue in polycarbonate as well as pre-Brexit customer purchases in the prior year. Adjusted EBITDA of $37 million was slightly higher than prior year as higher margins from improved customer mix and lower raw material costs were largely offset by lower volume. Engineered Materials sales volumes were 1% higher than prior year.

Polystyrene net sales of $183 million for the quarter were 20% below prior year. Lower sales volume impacted net sales by 13% due primarily from strong re-stocking activity in the first quarter of last year. Lower price from the pass through of lower raw material costs impacted net sales by 6%. Adjusted EBITDA of $12 million was $5 million lower than prior year due mainly to lower sales volume.

Feedstocks net sales of $45 million for the quarter were 33% below prior year due mainly to lower styrene-related net sales. Adjusted EBITDA of negative $16 million was $33 million lower than prior year due to lower margins in Europe and Asia from weaker market conditions as well as an unfavorable net timing impact of $10 million.

Americas Styrenics Adjusted EBITDA of $10 million for the quarter was $22 million below prior year due mainly to lower styrene margins and the impact from the planned styrene turnaround.

COVID-19 Response and Outlook

The Company previously withdrew its full-year 2020 guidance due to market uncertainty from the COVID-19 pandemic. In response to the pandemic, it took various actions to ensure employee safety, meet customer demand, and improve its operating and liquidity position, including:

Formation of a COVID-19 crisis response team and pandemic response plan

Implementation of actions that are expected to result in 2020 cost savings of approximately $25 million; this is incremental to the expected savings from the corporate restructuring program announced in late 2019

Reduction in anticipated 2020 capital spending from $100 million to $80 to $85 million

Drawdown of $100 million on revolving credit facility, as a precautionary measure

Continued focus on working capital optimization as a cash source

Commenting on the outlook for 2020, Bozich said, “So far in the second quarter we are seeing sustained demand for polystyrene and latex binders for food packaging, polycarbonate for isolation sheeting, and engineered materials for medical applications. However, there has been a significant decline in demand in other applications, particularly in automotive, tires, and textiles, and we anticipate that this will have a more pronounced impact on second quarter performance.”

Bozich continued, “As we look out into the second half of the year, the duration of these impacts and the rate of recovery are unknown. Regardless, we’ve already taken actions to reduce operating costs and improve our existing strong liquidity position. In addition, we continue to remain focused on investing in the higher growth applications we previously outlined – CASE, Engineered Materials, and SSBR – so that we are better positioned to accelerate growth and profitability when the recovery occurs.”

Conference Call and Webcast Information

Trinseo will host a conference call to discuss its first quarter 2020 financial results on Thursday, May 7, 2020 at 10 a.m. Eastern Time.

Commenting on results will be Frank Bozich, President and Chief Executive Officer, David Stasse, Executive Vice President and Chief Financial Officer, and Andy Myers, Director of Investor Relations. The conference call will be available by phone at:

Participant Toll Free Dial-In Number: +1 (833) 979-2709

Participant International Dial-In Number: +1 (236) 714-2177

Conference ID: 6927967

The Company will also offer a live Webcast of the conference call with question and answer session via the registration page of the Trinseo Investor Relations website.

Trinseo has posted its first quarter 2020 financial results on the Company’s Investor Relations website. The presentation slides will also be made available in the webcast player prior to the conference call. The Company will also furnish copies of the financial results press release and presentation slides to investors by means of a Form 8-K filing with the U.S. Securities and Exchange Commission.

A replay of the conference call and transcript will be archived on the Company’s Investor Relations website shortly following the conference call. The replay will be available until May 7, 2021.

About Trinseo

Trinseo (NYSE:TSE) is a global materials solutions provider and manufacturer of plastics, latex binders, and synthetic rubber. We are focused on delivering innovative and sustainable solutions to help our customers create products that touch lives every day — products that are intrinsic to how we live our lives — across a wide range of end-markets, including automotive, consumer electronics, appliances, medical devices, lighting, electrical, carpet, paper and board, building and construction, and tires. Trinseo had approximately $3.8 billion in net sales in 2019, with 17 manufacturing sites around the world, and approximately 2,700 employees. For more information visit www.trinseo.com.

Use of non-GAAP measures

In addition to using standard measures of performance and liquidity that are recognized in accordance with accounting principles generally accepted in the United States of America (“GAAP”), we use additional measures of income excluding certain GAAP items (“non-GAAP measures”), such as Adjusted Net Income, EBITDA, Adjusted EBITDA and Adjusted EPS and measures of liquidity excluding certain GAAP items, such as Free Cash Flow. We believe these measures are useful for investors and management in evaluating business trends and performance each period. These measures are also used to manage our business and assess current period profitability, as well as to provide an appropriate basis to evaluate the effectiveness of our pricing strategies. Such measures are not recognized in accordance with GAAP and should not be viewed as an alternative to GAAP measures of performance or liquidity, as applicable. The definitions of each of these measures, further discussion of usefulness, and reconciliations of non-GAAP measures to GAAP measures are provided in the Notes to Condensed Consolidated Financial Information presented herein.

Cautionary Note on Forward-Looking Statements

This press release may contain “forward-looking statements” including, without limitation, statements concerning plans, objectives, goals, projections, expectations, strategies, future events or performance, and underlying assumptions and other statements, which are not statements of historical facts. Forward-looking statements may be identified by the use of words like “expect,” “estimate,” “will,” “may,” or expressions of similar meaning. Forward-looking statements reflect management’s evaluation of information currently available and are based on the Company’s current expectations and assumptions regarding the impact from the COVID-19 pandemic, the Company’s business, the economy and other future conditions. Specific factors that could cause future results to differ

from those expressed by the forward-looking statements include, but are not limited to, risks related to the ongoing impact of the COVID-19 pandemic and those discussed in the Company’s Annual Report for the year ended December 31, 2019 filed with the Securities and Exchange Commission (“SEC”), in subsequent Quarterly Reports on Form 10-Q and in other filings and furnishings made by the Company with the SEC from time to time. Other unknown or unpredictable factors could also have material adverse effects on the Company’s performance. As a result of these or other factors, the Company’s actual results may differ materially from those contemplated by the forward-looking statements. The forward-looking statements included in this press release are made only as of the date hereof and are not a guarantee of future performance. The Company undertakes no obligation to publicly update or revise any forward-looking statement as a result of new information, future events or otherwise, except as otherwise required by law.

TRINSEO S.A.

Condensed Consolidated Statements of Operations

(In millions, except per share data)

(Unaudited)


	Three Months Ended
	March 31,
	2020		2019
Net sales	$	853.5	$	1,013.1
Cost of sales		783.8		915.7
Gross profit		69.7		97.4
Selling, general and administrative expenses		77.5		68.8
Equity in earnings of unconsolidated affiliates		9.8		32.2
Impairment charges		38.3		—
Operating income (loss)		(36.3)		60.8
Interest expense, net		10.3		10.2
Other expense, net		1.6		4.0
Income (loss) before income taxes		(48.2)		46.6
Provision for (benefit from) income taxes		(11.9)		10.8
Net income (loss)	$	(36.3)	$	35.8
Weighted average shares- basic		38.5		41.3
Net income (loss) per share- basic	$	(0.94)	$	0.87
Weighted average shares- diluted		38.5		41.8
Net income (loss) per share- diluted	$	(0.94)	$	0.86

TRINSEO S.A.

Condensed Consolidated Balance Sheets

(In millions)

(Unaudited)


	March 31,		December 31,
	2020		2019
Assets
Cash and cash equivalents	$	440.1	$	456.2
Accounts receivable, net		576.0		570.8
Inventories		405.5		438.2
Other current assets		16.6		25.9
Investments in unconsolidated affiliates		197.9		188.1
Property, plant, equipment, goodwill, and other intangible assets, net		826.7		885.0
Right-of-use assets - operating		77.2		71.4
Total other assets		117.4		123.2
Total assets	$	2,657.4	$	2,758.8
Liabilities and shareholders’ equity
Current liabilities		481.5		527.6
Long-term debt, net		1,162.2		1,162.6
Noncurrent lease liabilities - operating		64.1		58.0
Other noncurrent obligations		346.6		341.7
Shareholders’ equity		603.0		668.9
Total liabilities and shareholders’ equity	$	2,657.4	$	2,758.8

TRINSEO S.A.

Condensed Consolidated Statements of Cash Flows

(In millions)

(Unaudited)


	Three Months Ended
	March 31,
	2020		2019
Cash flows from operating activities
Cash provided by (used in) operating activities	$	(5.8)	$	153.2

Cash flows from investing activities
Capital expenditures		(24.3)		(25.0)
Net cash received for asset and business acquisitions, net of cash acquired		0.2		—
Proceeds from capital expenditures subsidy		—		0.7
Proceeds from the sale of businesses and other assets		11.6		—
Proceeds from the settlement of hedging instruments		51.6		—
Cash provided by (used in) investing activities		39.1		(24.3)

Cash flows from financing activities
Short-term borrowings, net		(3.5)		(0.1)
Purchase of treasury shares		(25.0)		(37.4)
Dividends paid		(15.9)		(17.4)
Proceeds from exercise of option awards		—		0.1
Withholding taxes paid on restricted share units		(0.6)		(3.8)
Repayments of 2024 Term Loan B		(1.7)		(1.8)
Cash used in financing activities		(46.7)		(60.4)
Effect of exchange rates on cash		(2.7)		(1.6)
Net change in cash, cash equivalents, and restricted cash		(16.1)		66.9
Cash, cash equivalents, and restricted cash—beginning of period		457.4		452.3
Cash, cash equivalents, and restricted cash—end of period	$	441.3	$	519.2
Less: Restricted cash, included in "Other current assets"		(1.2)		(2.8)
Cash and cash equivalents—end of period	$	440.1	$	516.4

TRINSEO S.A.

Notes to Condensed Consolidated Financial Information

(Unaudited)

Note 1: Net sales by Segment


	Three Months Ended
	March 31,
(In millions)	2020		2019
Latex Binders	$	219.1	$	223.9
Synthetic Rubber		101.7		124.6
Performance Plastics		305.1		369.3
Polystyrene		182.8		228.5
Feedstocks		44.8		66.8
Americas Styrenics*		—		—
Total Net Sales	$	853.5	$	1,013.1

* The results of this segment are comprised entirely of earnings from Americas Styrenics, our 50%-owned equity method investment. As such, we do not separately report net sales of Americas Styrenics within our condensed consolidated statements of operations.

Note 2: Reconciliation of Non-GAAP Performance Measures to Net Income

EBITDA is a non-GAAP financial performance measure, which is defined as income from continuing operations before interest expense, net; income tax provision; depreciation and amortization expense. We refer to EBITDA in making operating decisions because we believe it provides our management as well as our investors with meaningful information regarding the Company’s operational performance. We believe the use of EBITDA as a metric assists our board of directors, management and investors in comparing our operating performance on a consistent basis.

We also present Adjusted EBITDA as a non-GAAP financial performance measure, which we define as income from continuing operations before interest expense, net; income tax provision; depreciation and amortization expense; loss on extinguishment of long-term debt; asset impairment charges; gains or losses on the dispositions of businesses and assets; restructuring charges; acquisition related costs and benefits, and other items. In doing so, we are providing management, investors, and credit rating agencies with an indicator of our ongoing performance and business trends, removing the impact of transactions and events that we would not consider a part of our core operations.

Lastly, we present Adjusted Net Income and Adjusted EPS as additional performance measures. Adjusted Net Income is calculated as Adjusted EBITDA (defined beginning with net income, above), less interest expense, less the provision for income taxes and depreciation and amortization, tax affected for various discrete items, as appropriate. Adjusted EPS is calculated as Adjusted Net Income per weighted average diluted shares outstanding for a given period. We believe that Adjusted Net Income and Adjusted EPS provide transparent and useful information to management, investors, analysts and other stakeholders in evaluating and assessing our operating results from period-to-period after removing the impact of certain transactions and activities that affect comparability and that are not considered part of our core operations.

There are limitations to using the financial performance measures noted above. These performance measures are not intended to represent net income or other measures of financial performance. As such, they should not be used as alternatives to net income as indicators of operating performance. Other companies in our industry may define these performance measures differently than we do. As a result, it may be difficult to use these or similarly-named financial measures that other companies may use, to compare the performance of those companies to our performance. We compensate for these limitations by providing reconciliations of these performance measures to our net income, which is determined in accordance with GAAP.


	Three Months Ended
	March 31,
(In millions, except per share data)	2020		2019
Net income (loss)	$	(36.3)	$	35.8
Interest expense, net		10.3		10.2
Provision for (benefit from) income taxes		(11.9)		10.8
Depreciation and amortization		36.4		33.9
EBITDA	$	(1.5)	$	90.7
Net gain on disposition of businesses and assets (a)		(0.4)		(0.2)	Other expense, net
Restructuring and other charges (b)		1.8		0.4	Selling, general, and administrative expenses; Other expense, net
Acquisition transaction and integration net costs		0.1		—	Selling, general, and administrative expenses
Asset impairment charges or write-offs (c)		38.3		—	Impairment charges
Other items (d)		18.7		11.1	Selling, general, and administrative expenses
Adjusted EBITDA	$	57.0	$	102.0
Adjusted EBITDA to Adjusted Net Income:
Adjusted EBITDA		57.0		102.0
Interest expense, net		10.3		10.2
Provision for (benefit from) income taxes - Adjusted (e)		1.7		12.7
Depreciation and amortization - Adjusted (f)		35.0		33.4
Adjusted Net Income	$	10.0	$	45.7
Adjusted EPS	$	0.26	$	1.09

Adjusted EBITDA by Segment:
Latex Binders	$	21.5	$	17.5
Synthetic Rubber		15.3		8.8
Performance Plastics		36.7		35.5
Polystyrene		11.8		16.8
Feedstocks		(16.2)		17.2
Americas Styrenics		9.8		32.2
Corporate unallocated		(21.9)		(26.0)
Adjusted EBITDA	$	57.0	$	102.0

(a)

The net gain on disposition of businesses and assets for the three months ended March 31, 2020 relates to the sale of land in Livorno, Italy as well as consideration earned for the performance of our former latex business in Brazil, which we divested in 2016. The net gain on disposition of businesses and assets for the three months ended March 31, 2019 relates to consideration earned for the performance of our former latex business in Brazil.

(b)

Restructuring and other charges for the three months ended March 31, 2020 primarily relate to employee termination benefit charges as well as contract termination charges incurred in connection with the Company’s corporate restructuring program. The remainder of restructuring and other charges for the three months ended March 31, 2020 and restructuring and other charges for the three months ended March 31, 2019 primarily relate to decommissioning charges incurred in connection with the upgrade and replacement of our compounding facility in Terneuzen, The Netherlands as well as our decision to cease manufacturing activities at our latex binders manufacturing facility in Livorno, Italy.

Note that the accelerated depreciation charges incurred as part of both the Company’s corporate restructuring program and the upgrade and replacement of the Company’s compounding facility in Terneuzen, The Netherlands are included within the “Depreciation and amortization” caption above, and therefore are not included as a separate adjustment within this caption.

(c)

Asset impairment charges or write-offs for the three months ended March 31, 2020 relate to the impairment of the Company’s styrene monomer assets in Boehlen, Germany and polybutadiene rubber (nickel and neodymium-PBR) assets in Schkopau, Germany.

(d)

Other items for the three months ended March 31, 2020 and 2019 primarily relate to advisory and professional fees incurred in conjunction with our initiative to transition business services from Dow, including certain administrative services such as accounts payable, logistics, and IT services. Also included within other items for the three months ended March 31, 2020 are fees incurred in conjunction with certain of the Company’s strategic initiatives.

(e)

Adjusted to remove the tax impact of the items noted in (a), (b), (c), (d), and (f). The income tax expense (benefit) related to these items was determined utilizing either (1) the estimated annual effective tax rate on our ordinary income based upon our forecasted ordinary income for the full year or, (2) for items treated discretely for tax purposes we utilized the applicable rates in the taxing jurisdictions in which these adjustments occurred.

(f)

Amounts exclude accelerated depreciation of $1.3 million for the three months ended March 31, 2020 related to the shortening of the useful life of certain fixed assets related to the Company’s corporate restructuring program. The amounts exclude $0.5 million for the three months ended March 31, 2019 related to the shortening of the useful life of certain information technology assets related to the transition of business services from The Dow Chemical Company (noted in (d) above).

Note 3: Reconciliation of Non-GAAP Liquidity Measures to Cash from Operations

The Company uses certain measures, such as Free Cash Flow and Liquidity, as non-GAAP measures, to evaluate and discuss its liquidity position and results. Free Cash Flow is defined as cash from operating activities, less capital expenditures. Liquidity is defined as total cash and cash equivalents plus unused borrowing capacity on the Company’s revolving debt and accounts receivable securitization facility. We believe that Free Cash Flow and Liquidity provide indicators of the Company’s ongoing ability to generate cash through core operations, as it excludes the cash impacts of various financing transactions as well as cash flows from business combinations that are not considered organic in nature. We also believe that Free Cash Flow and Liquidity provide management and investors with a useful analytical indicator of our ability to service our indebtedness, pay dividends (when declared), and meet our ongoing cash obligations.

Free Cash Flow and Liquidity are not intended to represent cash flows from operations as defined by GAAP, and therefore, should not be used as an alternative for that measure. Other companies in our industry may define Free Cash Flow and Liquidity differently than we do. As a result, it may be difficult to use these or similarly-named financial measures that other companies may use, to compare the liquidity and cash generation of those companies to our own. The Company compensates for these limitations by providing the following detail, which is determined in accordance with GAAP.

Free Cash Flow


	Three Months Ended
	March 31,
(In millions)	2020		2019
Cash provided by (used in) operating activities	$	(5.8)	$	153.2
Capital expenditures		(24.3)		(25.0)
Free Cash Flow	$	(30.1)	$	128.2

Liquidity


		As of
		March 31,
(In millions)		2020
Cash and cash equivalents	$	440.1
Available borrowings under the accounts receivable securitization facility		135.6
Available borrowings under the revolving credit facility		360.9
Liquidity	$	936.6

Exhibit 99.2

1 ™ Trademark of Trinseo S.A. or its affiliates ™ Trademark of Trinseo S.A. or its affiliates May 6, 2020 First Quarter 2020 Financial Results

2 Disclosure Rules Cautionary Note on Forward-Looking Statements. This presentation contains forward-looking statements including, without limitation, statements concerning plans, objectives, goals, projections, strategies, future events or performance, and underlying assumptions and other statements, which are not statements of historical facts or guarantees or assurances of future performance. Forward-looking statements may be identified by the use of words like “expect,” “anticipate,” “intend,” “forecast,” “outlook,” “will,” “may,” “might,” “see,” “tend,” “assume,” “potential,” “likely,” “target,” “plan,” “contemplate,” “seek,” “attempt,” “should,” “could,” “would” or expressions of similar meaning. Forward-looking statements reflect management’s evaluation of information currently available and are based on our current expectations and assumptions regarding the impact from the Covid-19 pandemic, our business, the economy and other future conditions. Because forward-looking statements relate to the future, they are subject to inherent uncertainties, risks and changes in circumstances that are difficult to predict. Factors that might cause such a difference include, but are not limited to, those discussed in our Annual Report on Form 10-K, under Part I, Item 1A — “Risk Factors” and elsewhere in our other reports filed with the U.S. Securities and Exchange Commission. As a result of these or other factors, our actual results may differ materially from those contemplated by the forward-looking statements. Therefore, we caution you against relying on any of these forward-looking statements. The forward-looking statements included in this presentation are made only as of the date hereof. We undertake no obligation to publicly update or revise any forward-looking statement as a result of new information, future events or otherwise, except as otherwise required by law. This presentation contains financial measures that are not in accordance with generally accepted accounting principles in the US (“GAAP”) including EBITDA, Adjusted EBITDA, Adjusted Net Income, Adjusted EPS and Free Cash Flow. We believe these measures provide relevant and meaningful information to investors and lenders about the ongoing operating results of the Company. Such measures when referenced herein should not be viewed as an alternative to GAAP measures of performance or liquidity, as applicable. We have provided a reconciliation of these measures to the most comparable GAAP metric alongside of the respective measure or otherwise in the Appendix section of this presentation. Introductions • Frank Bozich, President & CEO • David Stasse, Executive Vice President & CFO • Andy Myers, Director of Investor Relations Introductions & Disclosure Rules

3 COVID-19 – Summary Operations • Chemical industry deemed essential critical infrastructure by DHS • All plants able to operate and meet customer demand • Supply chain intact with contingency plans in place • Production schedules optimized based on customer demand Liquidity • Ending Q1 cash balance of $440 million; proforma $540 million for revolver borrowing* • $397 million available under committed facilities** • No significant debt maturity until September 2024 Demand Impact • Impact largely constrained to China in Q1; $6 million headwind • Demand more resilient in packaging, isolation sheeting, and medical applications • Significant Q2 demand decline in automotive and tire markets Current Market Conditions by Segment Latex Binders: Resiliency in board packaging and CASE applications Synthetic Rubber: Low volumes due to weak demand from tire producers and OEMs Performance Plastics: Volume headwind from automotive production shutdowns; continued demand for polycarbonate for personal protection equipment and isolation sheets and Engineered Materials for medical devices Polystyrene: Strong demand for packaging applications but lower volume expected in appliances and insulation Feedstocks: Improving European margins; lower oil prices reshaping the styrene cost curve, increasing the relative competitiveness of Europe-based assets *Includes $100 million drawn from revolver on April 3, 2020. **$397 million of proforma availability under committed facilities includes $261 million of available borrowings under the revolver facility as of March 31, 2020, net of $100 million drawn on April 3, 2020, and $136 million of available borrowings under the accounts receivable securitization facility as of March 31, 2020.

4 Trinseo Contributions to COVID-19 Response Trinseo Materials Essential in the Fight Against COVID-19 Trinseo’s CALIBRE™ PC Resins Essential in Helping to Curb Spread of COVID-19 U.S. Department of Homeland Security Deemed Chemical Industry as Essential Critical Infrastructure Trinseo in the Community: Hong Kong, Taiwan & China Sites Donate Hand Sanitizer and Protective Materials Trinseo’s materials support plastic & paper board food packaging applications to keep foods fresher, longer.

5 COVID-19 – Taking Action COVID-19 Crisis Response Team and Pandemic Response Plan in place ~$25 million cost reductions, incremental to corporate restructuring announced late 2019 Liquidity-focused actions – Reduction of planned 2020 capital spending from $100 million to $80 to $85 million – Drawdown of $100 million on revolver as a precautionary measure – Continued focus on working capital as cash source via inventory management Modified operating model to optimize manufacturing network Ongoing Business Excellence activities expected to more than offset cost inflation Managing short-term adversity while continuing to implement longer-term strategy to capitalize on opportunities during the economic recovery Short-Term Actions Systems independence enables efficiency opportunities Invest in applications with higher growth and less cyclicality – CASE, SSBR, Engineered Materials Assess and invest in new opportunities based on changes in mega-trends including post- pandemic effects Engaged works council regarding the disposition of styrene assets in Boehlen, Germany and polybutadiene rubber (PBR) assets in Schkopau, Germany Long-Term Strategic Actions

6 • Lower profitability due mainly to lower styrene margins, net timing, a planned turnaround at Americas Styrenics, and an approximately $6 million pre-tax impact from the COVID-19 pandemic • Net sales decline due to both lower pricing from the pass through of lower raw material costs and lower volumes in all segments except Latex Binders • Net loss includes pre-tax charge of $38 million related to the impairment of the styrene plant in Boehlen, Germany and PBR line in Schkopau, Germany Trinseo Q1 2020 Financial Results ($0.94) $0.26 $0.86 1.09 Diluted EPS Adj EPS* EPS ($) Q1'20 Q1'19 $854 ($36) $1,013 $36 Net Sales Net Income (Loss) Net Sales & Net Income (Loss) ($MM) Q1'20 Q1'19 $57 $102 Q1'20 Q1'19 Adjusted EBITDA* ($MM) * See Appendix for a reconciliation of non-GAAP measures. Net Sales Vol Price FX Total (8%) (6%) (1%) (16%)

7 • Higher Adjusted EBITDA due to 11% volume growth in coatings, adhesives, sealants and elastomers (CASE) applications as well as the Rheinmünster contribution • Paperboard, particularly in North America, displaying resiliency during COVID-19 pandemic • Lower price due mainly to raw material pass through Latex Binders $219 $224 Q1'20 Q1'19 Net Sales ($MM) $22 $18 Q1'20 Q1'19 Adjusted EBITDA ($MM) 135 126 Q1'20 Q1'19 Volume (kt) Vol Price FX Total 7% (7%) (1%) (2%)

8 • Higher Adjusted EBITDA as both favorable net timing impact of $6 million and increased fixed cost absorption offset lower sales volumes • Volume decline in SSBR caused mainly by customer order cancellations from COVID-19 impact Synthetic Rubber $102 $125 Q1'20 Q1'19 Net Sales ($MM) $15 $9 Q1'20 Q1'19 Adjusted EBITDA ($MM) 60 65 Q1'20 Q1'19 Volume (kt) Vol Price FX Total (8%) (7%) (2%) (18%)

9 • Volume headwinds were offset by higher margins from improved customer mix and lower raw material costs • Lower volume due to upstream supplier issue in polycarbonate as well as pre-Brexit customer purchases in the prior year • Lower price due to pass through of lower raw material costs Performance Plastics $305 $369 Q1'20 Q1'19 Net Sales ($MM) $37 $36 Q1'20 Q1'19 Adjusted EBITDA ($MM) 143 164 Q1'20 Q1'19 Volume (kt) Vol Price FX Total (12%) (4%) (1%) (17%)

10 • Lower profitability caused by lower volume as first quarter of prior year experienced strong re-stocking activity • Lower price due to the pass through of lower raw material costs • Observing strong demand for polystyrene in packaging applications Polystyrene $183 $228 Q1'20 Q1'19 Net Sales ($MM) $12 $17 Q1'20 Q1'19 Adjusted EBITDA ($MM) 152 174 Q1'20 Q1'19 Volume (kt) Vol Price FX Total (13%) (6%) (1%) (20%)

11 • Decrease in Adjusted EBITDA due to lower styrene margins in both Europe and Asia as well as net timing • Europe margins around cash breakeven during Q1 2020 Feedstocks & Americas Styrenics ($16) $17 Q1'20 Q1'19 Adjusted EBITDA ($MM) FEEDSTOCKS • Lower earnings from lower styrene margins in North America coupled with planned maintenance at St. James, Louisiana styrene facility • No Q1 dividend AMERICAS STYRENICS $10 $32 Q1'20 Q1'19 Adjusted EBITDA ($MM)

12 Liquidity* and Free Cash Flow* Breakeven EBITDA FCF* Breakeven EBITDA ~$160 million ~$30 Cash Taxes ~$45 Cash Interest ~$85 CapEx & Plant Turnarounds Expect working capital release of more than $100 million in the second quarter Free Cash Flow* breakeven at ~$160 million ongoing EBITDA ~$540 Proforma Cash (Q1 ending of $440 plus revolver draw of $100)** ~$397 Committed Facilities** $937 million Liquidity* *For the definition of Free Cash Flow, Liquidity, and other non-GAAP measures, refer to the accompanying press release furnished as Exhibit 99.1 to our Form 8-K dated May 6, 2020. **Proforma cash includes $100 million drawn from revolver on April 3, 2020. $397 million of proforma availability under committed facilities includes $261 million of available borrowings under the revolver facility as of March 31, 2020, net of $100 million drawn on April 3, 2020, and $136 million of available borrowings under the accounts receivable securitization facility as of March 31, 2020.

13 Updated 2020 Outlook Q2 2020 expectations • Significant decline in demand expected versus prior year – Performance Plastics: 50% lower to automotive applications, 20% lower to others – Synthetic Rubber: 50% lower – Latex Binders: 20% lower mainly from textile applications • Slightly higher sequential styrene margins • Working capital release of more than $100 million from declining raw material prices and inventory management • Unfavorable net timing from significant reduction in raw material prices Full-year 2020 cash flow expectations • Unknown duration and impacts from COVID-19 pandemic • Free Cash Flow* assumptions: – Capital spending: $80 million to $85 million – Taxes: $25 million to $30 million – Interest: $45 million – Restructuring: $20 million – Turnarounds: $30 million – Americas Styrenics dividend: $0 to $25 million – Expect Q2 working capital release of more than $100 million and planning further inventory reductions in the second half; full working capital impact dependent on raw material prices *For the definition of Free Cash Flow and other non-GAAP measures, refer to the accompanying press release furnished as Exhibit 99.1 to our Form 8-K dated May 6, 2020.

14 Lower fuel demand improving Trinseo’s relative styrene production cost position • Lower-cost naphtha improves relative cost position of European-based assets – Europe ethylbenzene styrene monomer (EBSM) plants have become much more cost competitive in the current environment – Also, lower butadiene prices could result in Synthetic Rubber arbitrage opportunities • Propylene oxide styrene monomer (POSM) plants in Europe operating at below average utilization rates (estimated ~75%) due to lack of PO demand Cost Curve – Apr 2020 Basis Cost Curve – Jan 2020 Basis NA POSM NA EBSM Europe POSM ME EBSM SEA POSM China Refinery SEA EBSM China POSM NEA POSM China EBSM - Integrated NEA EBSM Europe EBSM China EBSM - Non- Integrated 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 Capacity (kilotons) Europe POSM NA POSM China Refinery Europe EBSM NA EBSM SEA POSM ME EBSM China POSM NEA POSM SEA EBSM China EBSM - Integrated NEA EBSM China EBSM - Non- Integrated 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 Capacity (kilotons) NOTE: Cost Curve represents full cost basis in USD per metric ton. SOURCE: Trinseo

15 15 Appendix

16 US GAAP to Non-GAAP Reconciliation NOTE: For definitions of non-GAAP measures as well as descriptions of current period reconciling items from Net Income to Adjusted EBITDA and to Adjusted Net Income, refer to the accompanying press release furnished as Exhibit 99.1 to our Form 8-K dated May 6, 2020. Totals may not sum due to rounding. (in $millions, unless noted) Q1'17 Q2'17 Q3'17 Q4'17 Q1'18 Q2'18 Q3'18 Q4'18 Q1'19 Q2'19 Q3'19 Q4'19 Q1'20 2017 2018 2019 Net Income 117.3 60.2 33.2 117.7 120.3 98.3 74.7 (0.9) 35.8 28.0 22.5 5.7 (36.3) 328.3 292.5 92.0 Interest expense, net 18.2 18.7 18.4 14.8 14.9 10.8 10.1 10.6 10.2 9.9 9.2 10.0 10.3 70.1 46.4 39.3 Provision for income taxes 29.3 18.8 8.3 26.4 24.9 20.4 19.2 7.3 10.8 15.7 9.3 (23.2) (11.9) 82.8 71.8 12.6 Depreciation and amortization 24.7 26.3 29.2 30.3 31.9 32.3 31.8 34.2 33.9 34.7 33.0 34.3 36.4 110.6 130.2 136.0 EBITDA 189.5 124.0 89.1 189.2 192.0 161.8 135.8 51.2 90.7 88.3 74.0 26.8 (1.5) 591.8 540.9 279.9 Loss on extinguishment of long-term debt - - 65.3 - - 0.2 - - - - - - - 65.3 0.2 - Other items - - 1.6 (21.6) 2.7 6.8 6.1 7.4 11.1 14.1 13.3 16.9 18.7 (19.9) 22.8 55.4 Restructuring and other charges 2.1 1.1 1.5 1.2 0.5 1.2 0.9 5.6 0.4 (0.3) 0.2 17.9 1.8 6.0 8.2 18.1 Net (gains) / losses on dispositions of businesses and assets (9.9) - 0.2 - (0.5) - - (0.5) (0.2) - - (0.5) (0.4) (9.7) (1.0) (0.7) Acquisition transaction and integration costs - 1.1 3.8 (0.1) 0.3 0.2 0.1 - - 0.7 0.6 (2.2) 0.1 4.7 0.6 (0.9) Asset impairment charges or write-offs - - 4.3 - - - - 1.5 - - - - 38.3 4.3 1.5 - Adjusted EBITDA 181.7 126.2 165.8 168.7 195.0 170.2 142.9 65.2 102.0 102.8 88.1 58.9 57.0 642.5 573.2 351.8 Adjusted EBITDA to Adjusted Net Income Adjusted EBITDA 181.7 126.2 165.8 168.7 195.0 170.2 142.9 65.2 102.0 102.8 88.1 58.9 57.0 642.5 573.2 0.0 Interest expense, net 18.2 18.7 18.4 14.8 14.9 10.8 10.1 10.6 10.2 9.9 9.2 10.0 10.3 70.1 46.4 39.3 Provision for income taxes - Adjusted 29.5 19.2 21.0 28.4 26.0 22.3 21.9 10.8 12.7 19.1 19.7 1.3 1.7 98.2 81.0 52.8 Depreciation and amortization - Adjusted 24.2 25.8 28.6 30.0 31.7 32.1 31.5 34.0 33.4 33.1 32.0 33.9 35.0 108.6 129.1 132.4 Adjusted Net Income 109.8 62.5 97.8 95.5 122.4 105.0 79.4 9.8 45.7 40.7 27.2 13.7 10.0 365.6 316.7 127.3 Wtd Avg Shares - Diluted (000) 45,313 44,995 44,782 44,734 44,430 43,810 43,347 43,269 41,762 41,104 40,410 39,434 38,632 44,973 43,666 40,710 Adjusted EPS - Diluted ($) 2.42 1.39 2.18 2.14 2.76 2.40 1.83 0.23 1.09 0.99 0.67 0.35 0.26 8.13 7.25 3.13 Adjustments by Statement of Operations Caption Loss on extinguishment of long-term debt - - 65.3 - - 0.2 - - - - - - - 65.3 0.2 - Cost of sales - - 2.4 (18.4) - 1.2 - 0.6 - - - 0.4 - (16.0) 1.8 0.4 SG&A and Impairment Charges 2.1 2.2 7.6 (2.1) 3.5 6.5 7.1 13.8 11.5 14.5 14.1 34.6 58.9 9.9 30.8 74.7 Other expense (income), net (9.9) - 1.4 - (0.5) 0.5 - (0.5) (0.2) - - (3.0) (0.4) (8.5) (0.5) (3.2) Total EBITDA Adjustments (7.8) 2.2 76.7 (20.5) 3.0 8.4 7.1 14.0 11.3 14.5 14.1 32.1 58.5 50.7 32.3 71.9 Free Cash Flow Reconciliation Cash provided by (used in) operating activities (25.7) 62.3 158.3 196.5 40.8 141.6 56.1 128.0 153.2 80.8 40.9 47.6 (5.8) 391.3 366.5 322.5 Capital expenditures (36.0) (38.2) (34.6) (38.5) (30.6) (28.9) (31.5) (30.5) (25.0) (22.6) (23.6) (38.9) (24.3) (147.4) (121.4) (110.1) Free Cash Flow (61.7) 24.1 123.7 158.0 10.2 112.7 24.6 97.5 128.2 58.2 17.3 97.5 (30.1) 243.9 245.1 212.4

17 Selected Segment Information * See this Appendix for a reconciliation of non-GAAP measures. NOTE: Totals may not sum due to rounding. (in $millions, unless noted) Q1'17 Q2'17 Q3'17 Q4'17 Q1'18 Q2'18 Q3'18 Q4'18 Q1'19 Q2'19 Q3'19 Q4'19 Q1'20 2017 2018 2019 Latex Binders 136 130 135 125 124 131 129 125 126 128 133 129 135 527 510 516 Synthetic Rubber 81 72 62 65 74 73 64 62 65 58 57 57 60 280 273 238 Performance Plastics 156 147 153 154 159 160 165 151 164 158 150 156 143 610 636 628 Polystyrene 141 156 159 155 140 173 154 161 174 149 151 144 152 612 627 619 Feedstocks 76 108 94 102 65 85 107 80 77 57 77 78 59 379 336 289 Trade Volume (kt) 591 613 603 601 563 621 619 579 606 551 567 565 549 2,408 2,382 2,288 Latex Binders 289 292 266 250 255 281 278 255 224 230 230 219 219 1,097 1,069 903 Synthetic Rubber 163 174 119 127 149 155 138 130 125 112 104 100 102 583 573 441 Performance Plastics 337 339 362 381 403 413 401 361 369 347 325 325 305 1,419 1,578 1,366 Polystyrene 228 233 238 241 240 286 252 240 228 207 198 176 183 941 1,017 809 Feedstocks 87 107 111 103 75 102 131 79 67 55 66 69 45 408 387 256 Net Sales 1,104 1,145 1,097 1,102 1,122 1,237 1,200 1,065 1,013 952 922 889 854 4,448 4,623 3,776 Latex Binders 37 36 32 33 27 36 25 22 18 21 21 22 22 139 110 81 Synthetic Rubber 46 28 (6) 15 26 31 15 5 9 13 7 12 15 83 77 41 Performance Plastics 52 48 62 68 66 49 44 31 36 34 36 29 37 231 189 135 Polystyrene 14 7 9 19 10 14 5 6 17 16 16 5 12 48 34 55 Feedstocks 42 (1) 46 24 42 32 40 (7) 17 (1) 0 (10) (16) 111 107 7 Americas Styrenics 18 30 44 31 46 33 35 31 32 40 26 21 10 123 144 119 Corporate (27) (22) (22) (21) (20) (25) (21) (22) (26) (21) (19) (20) (22) (92) (88) (85) Adjusted EBITDA* 182 126 166 169 195 170 143 65 102 103 88 59 57 642 573 352 Adj EBITDA Variance Analysis Net Timing** Impacts - Fav/(Unfav) Latex Binders (8) 1 (5) 4 (4) 4 (3) 4 (0) (1) 1 1 (3) (8) 1 1 Synthetic Rubber 16 (4) (25) 0 2 7 3 (3) (5) 1 (2) (0) 1 (13) 9 (6) Performance Plastics (2) (3) 1 2 (0) (3) (1) (5) (1) 0 0 (0) (1) (2) (9) (0) Polystyrene 4 (5) 1 3 (2) 1 (2) (7) 2 (0) 2 (3) (4) 3 (9) 0 Feedstocks 11 (11) 4 7 (3) 0 (2) (17) 3 1 4 (5) (7) 11 (21) 3 Net Timing** Impacts - Fav/(Unfav) 22 (23) (24) 15 (7) 10 (4) (28) (1) 1 6 (8) (15) (9) (30) (2) **Net Timing is the difference between Raw Material Timing and Price Lag. Raw Material Timing represents the timing of raw material cost changes flowing through cost of goods sold versus current pricing. Price Lag represents the difference in revenue between the current contractual price and the current period price.


Luxembourg	001-36473	N/A
(State or other jurisdiction of incorporation or organization)	(Commission File Number)	(I.R.S. Employer Identification Number)


Title of Each Class	Trading symbol	Name of Exchange on which registered
Ordinary Shares, par value $0.01 per share	TSE	New York Stock Exchange

ay
Exhibit Number		Description
99.1		Press Release, dated May 6, 2020
99.2		Investor Presentation, dated May 6, 2020
104		Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101)

Ay 2
Exhibit Number		Description
99.1		Press Release, dated May 6, 2020
99.2		Investor Presentation, dated May 6, 2020
104		Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101)

a
	TRINSEO S.A.


	By:	/s/ David Stasse
	Name:	David Stasse
	Title:	Executive Vice President and Chief Financial Officer

Date: May 6, 2020