Exhibit 99.1

Stepan Reports Fourth Quarter 2024 Results

Northbrook, Illinois, February 19, 2025 -- Stepan Company (NYSE: SCL) today reported:

Fourth Quarter 2024 Highlights

YTD 2024 Highlights

“While we are disappointed with our overall financial performance in 2024, we advanced our strategic investments and took necessary steps to return the Company to profitable growth. I am proud of the resilience, hard work and dedication of the entire organization. Full year Adjusted EBITDA grew 4% versus prior year despite several one-time events that negatively impacted earnings and the pre-operating expenses in our new Pasadena, site," said Luis E.

Rojo, President and Chief Executive Officer. "Surfactants and Specialty Products delivered strong double-digit Adjusted EBITDA growth, partially offset by demand weakness in Polymers. Overall, global sales volume grew 1%, driven by 2.5% growth in our Surfactant business. We are encouraged by the Surfactant growth within several of our key strategic end markets. We delivered $39 million of free cash flow, which was in line with our expectations, and we increased our dividend for the 57th consecutive year. We completed the majority of our new Pasadena, Texas site which is critical to growing our alkoxylation business. Our strong foundation, combined with the cost reductions and strategic investments we have made, position us well to deliver future growth."

Financial Summary

Percentage Change in Net Sales

Net sales in the fourth quarter of 2024 decreased 1% year-over-year. This slight decrease reflects higher selling prices that were more than offset by a 1% decline in sales volume and the negative impact of foreign currency translation.

Segment Results

Consolidated operating income in the quarter increased $7.5 million year-over-year. Consolidated adjusted EBITDA(2) decreased $2.5 million, or 7%, year-over-year largely due to the demand shortfall in Polymers and higher expenses associated with the Latin American tax proceeding reserve and the previously announced fourth quarter CEO transition.

Income Taxes

The Company's full year effective tax rate was 16.7% in 2024 versus 16.9% in 2023. This small decrease was comprised of various offsetting items, most notably a favorable non-recurring deferred tax adjustment in 2024 that offset an unfavorable foreign rate differential in 2024.

Outlook

“As we look forward to 2025, I am excited and energized to continue our focus on accelerating our business strategies through improved execution to drive consistent volume growth, margin improvement and free cash flow generation. We believe Adjusted EBITDA will improve in all of our reporting segments. The Stepan Team is executing on opportunities to grow volume, deliver improved product and customer mix and further progress our cost out and cost avoidance initiatives. We are optimistic that Polymer demand will increase as we execute our innovation and growth plans. We believe our Surfactant business will experience continued growth in our key strategic end markets," said Luis E. Rojo, President and Chief Executive Officer. "As previously announced, we expect our Pasadena facility will start up in the first quarter of 2025 and enable us to deliver volume growth and Supply Chain savings during the year. We believe we are positioned well to deliver full year Adjusted EBITDA and Adjusted Net Income growth and positive free cash flow in 2025.”

Notes

(1) Adjusted net income and adjusted earnings per share are non-GAAP measures which exclude deferred compensation income/expense, cash-settled stock appreciation rights (SARs) income/expense, certain environmental remediation-related costs as well as other significant and infrequent/non-recurring items. See Table II for reconciliations of non-GAAP adjusted net income and adjusted earnings per diluted share.

(2) EBITDA and adjusted EBITDA are non-GAAP measures. See Table VI for calculations and GAAP reconciliations of EBITDA and adjusted EBITDA.

(3) Free cash flow is a non-GAAP measure and reflects cash generated from operations minus capital expenditures. Cash generated from operations was $68.3 million during the fourth quarter of 2024 and capital expenditures were $36.2 million. Cash generated from operations was $162.1 million during the full year 2024 and capital expenditures were $122.8 million.

Conference Call

Stepan Company will host a conference call to discuss its second quarter results at 9:00 a.m. ET (8:00 a.m. CT) on February 19, 2025. The call can be accessed by phone and webcast. To access the call by phone, please click on this Registration Link, complete the form and you will be provided with dial in details and a PIN. To avoid delays, we encourage participants to dial into the conference call ten minutes ahead of the scheduled start time. The webcast can be accessed through the Investors/Conference Calls page at www.stepan.com.

A webcast replay of the conference call will be available at the same location shortly after the call.

Supporting Slides

Slides supporting this press release will be made available at www.stepan.com through the Investors/Presentations page at approximately the same time as this press release is issued.

Corporate Profile

Stepan Company is a major manufacturer of specialty and intermediate chemicals used in a broad range of industries. Stepan is a leading merchant producer of surfactants, which are the key ingredients in consumer and industrial cleaning and disinfection compounds and in agricultural and oilfield solutions. The Company is also a leading supplier of polyurethane polyols used in the expanding thermal insulation market, and CASE (Coatings, Adhesives, Sealants, and Elastomers) industries.

Headquartered in Northbrook, Illinois, Stepan utilizes a network of modern production facilities located in North and South America, Europe and Asia.

The Company's common stock is traded on the New York Stock Exchange (NYSE) under the symbol SCL. For more information about Stepan Company please visit the Company online at www.stepan.com

More information about Stepan’s sustainability program can be found on the Sustainability page at www.stepan.com * * * * *

Contact: Samuel S. Hinrichsen 847-446-7500

Certain information in this news release consists of forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These statements include statements about Stepan Company’s plans, objectives, strategies, financial performance and outlook, trends, the amount and timing of future cash distributions, prospects or future events and involve known and unknown risks that are difficult to predict. As a result, Stepan Company’s actual financial results, performance, achievements or prospects may differ materially from those expressed or implied by these forward-looking statements. In some cases, you can identify forward-looking statements by the use of words such as “may,” “could,” “expect,” “intend,” “plan,” “seek,” “anticipate,” “believe,” “estimate,” “guidance,” “predict,” “potential,” “continue,” “likely,” “will,” “would,” “should,” “illustrative” and variations of these terms and similar expressions, or the negative of these terms or similar expressions. Such forward-looking statements are necessarily based upon estimates and assumptions that, while considered reasonable by Stepan Company and its management based on their knowledge and understanding of the business and industry, are inherently uncertain. These statements are not guarantees of future performance, and stockholders should not place undue reliance on forward-looking statements.

There are a number of risks, uncertainties and other important factors, many of which are beyond Stepan Company's control, that could cause actual results to differ materially from the forward-looking statements contained in this news release. Such risks, uncertainties and other important factors include, among other factors, the risks, uncertainties and factors described in Stepan Company's Form 10-K, Form 10-Q and Form 8-K reports and exhibits to those reports, and include (but are not limited to) risks and uncertainties related to accidents, unplanned production shutdowns or disruptions in manufacturing facilities; reduced demand due to customer product reformulations or new technologies; our inability to successfully develop or introduce new products; compliance with laws; our ability to identify suitable acquisition candidates and successfully complete and integrate acquisitions; global competition; volatility of raw material and energy costs and supply; disruptions in transportation or significant changes in transportation costs; downturns in certain industries and

general economic downturns; international business risks, including currency exchange rate fluctuations, legal restrictions and taxes; unfavorable resolution of litigation against us; maintaining and protecting intellectual property rights; our ability to access capital markets; global political, military, security or other instability; costs related to expansion or other capital projects; interruption or breaches of information technology systems; our ability to retain executive management and key personnel; and our debt covenants.

These forward-looking statements are made only as of the date hereof, and Stepan Company undertakes no obligation to update or revise these forward-looking statements, whether as a result of new information, future events or otherwise.

Tables follow

Table I

STEPAN COMPANY

For the Three and Twelve Months Ended December 31, 2024 and 2023

(Unaudited – in 000's, except per share data)

Table II

Reconciliation of Non-GAAP Net Income and Earnings per Diluted Share*

* All amounts in this table are presented after-tax

The Company believes that certain non-GAAP measures, in conjunction with comparable GAAP measures, are useful for evaluating the Company’s operating performance and financial condition. The Company uses this non-GAAP information as an indicator of business performance and evaluates management’s effectiveness with specific reference to these indicators. Management believes that these non-GAAP financial measures provide useful supplemental information because they exclude non-operational items that affect comparability between years. These measures should be considered in addition to, not as substitutes for or superior to, measures of financial performance prepared in accordance with GAAP and may differ from similarly titled measures presented by other companies. The Company's Annual Report on Form 10-K for the year ended December 31, 2023 contains additional information regarding the use of non-GAAP financial measures.

Summary of Fourth Quarter 2024 Adjusted Net Income Items

Adjusted net income excludes non-operational deferred compensation income/expense, cash-settled SARs income/expense, certain environmental remediation costs and other significant and infrequent or non-recurring items.

Table III

Reconciliation of Pre-Tax to After-Tax Adjustments

Management uses the non-GAAP adjusted net income metric to evaluate the Company's operating performance. Management excludes the items listed in the table below because they are non-operational items. The cumulative tax effect was calculated using the statutory tax rates for the jurisdictions in which the transactions occurred.

Table IV

Deferred Compensation Plans

The full effect of the deferred compensation plans on quarterly pre-tax income was $1.0 million of income versus $3.0 million of expense in the prior year. The quarter-end market prices of Company stock and the impact of deferred compensation on specific income statement line items is summarized below:

Effects of Foreign Currency Translation

The Company’s foreign subsidiaries transact business and report financial results in their respective local currencies. These results are translated into U.S. dollars at average foreign exchange rates appropriate for the reporting period. The table below presents the impact that foreign currency translation had on select income statement line items.

Corporate Expenses

Adjusted Corporate expenses increased $1.7 million, or 11% for the quarter. This increase was primarily due to higher expenses associated with the previously announced CEO transition in the fourth quarter of 2024.

Table V

Stepan Company

Consolidated Balance Sheets

December 31, 2024 and December 31, 2023

Selected Balance Sheet Information

The Company’s total debt decreased by $63.1 million and cash decreased by $47.6 million versus September 30, 2024. The decrease in debt and cash primarily reflects fourth quarter repayments against the Company's revolving credit facility. The Company’s net debt level decreased $15.5 million versus September 30, 2024 and the net debt ratio remained constant at 31% in the quarter (Net Debt and Net Debt Ratio are non-GAAP measures, reconciliations of which are shown in the table below). Management uses the non-GAAP net debt metric to show a more complete picture of the Company's overall liquidity, financial flexibility and leverage level.

The major working capital components were:

Table VI

Reconciliations of Non-GAAP EBITDA and Adjusted EBITDA

Management uses the non-GAAP EBITDA and adjusted EBITDA metrics to evaluate the Company's operating performance. Management excludes the items listed in the table below because they are non-operational items. Refer to the Income Statement on Table I for a bridge between Operating Income and Net Income.