STEPAN CO

There are a variety of legal proceedings pending or threatened against the Company that occur in the normal course of the Company’s business, the majority of which relate to environmental assessment, protection and remediation matters. Some of these proceedings may result in fines, penalties, judgments or costs being assessed against the Company at some future time. The Company’s operations are subject to extensive local, state and federal regulations, including the U.S. Comprehensive Environmental Response, Compensation and Liability Act of 1980 (CERCLA) and the Superfund amendments of 1986 (Superfund) as well as comparable regulations applicable to the Company’s foreign locations. Over the years, the Company has received requests for information related to or has been named by government authorities as a potentially responsible party at a number of sites where cleanup costs have been or may be incurred by the Company under CERCLA and similar state statutes. In addition, the Company is from time to time involved in routine legal proceedings incidental to the conduct of its business, including personal injury, property damage, tax, trade and labor matters. The Company believes that it has made adequate provisions for the costs it is likely to incur with respect to these claims. While the Company is unable to predict the outcome of these matters, it does not believe, based upon current available facts, that the ultimate resolution of any of these matters will have a material effect on its overall financial position. The Company’s material legal proceedings are described below:

Maywood, New Jersey Site

The Company’s property in Maywood, New Jersey, property formerly owned by the Company adjacent to its current property and other nearby properties (collectively, the Maywood site) were listed on the National Priorities List in September 1993 pursuant to the provisions of CERCLA because of alleged chemical and radiological contamination. Pursuant to (i) a September 21, 1987 Administrative Order on Consent entered into between the USEPA and the Company for property formerly owned by the Company at the Maywood site and (ii) the issuance of an order on May 2, 1991, by the USEPA to the Company for property currently owned by the Company at the Maywood site, the Company has completed various Remedial Investigation/Feasibility Studies of soils and groundwater at the Maywood site. On September 23, 2014, USEPA issued its Record of Decision for chemically-contaminated soil at the Maywood site; the Record of Decision was amended pursuant to an Explanation of Significant Differences in January 2021. The USEPA has not yet issued a Record of Decision for chemically-contaminated groundwater at the Maywood site. Based on the most current information available, the Company believes its recorded liability is reasonable having considered the range of estimated costs of remediation for the Maywood site. The estimate of the cost of remediation for the Maywood site could change again as the Company continues to hold discussions with the USEPA, as the remedial action is finalized, if a groundwater Record of Decision is issued or if other potentially responsible parties are identified. The ultimate amount for which the Company is liable could differ materially from the Company’s current recorded liability.

D’Imperio Property Site

During the mid-1970’s, Jerome Lightman and the Lightman Drum Company disposed of hazardous substances generated by the Company at several sites in New Jersey, including the D’Imperio Property Superfund Site (the D’Imperio site). The Company was named as a potentially responsible party in an October 2, 1998 lawsuit in the U.S. District Court for the District of New Jersey that involved the D’Imperio site. Based on current information, the Company believes that its recorded liability is reasonable having considered the range of estimated cost of remediation for the D’Imperio site. Depending on the ultimate cost of the remediation at this site, the amount for which the Company is liable could differ materially from the Company’s current recorded liability.

Wilmington Site

Property formerly owned and operated by the Company in Wilmington, Massachusetts was listed on the National Priorities List in 2006. The Company, together with the current site owner and another potentially responsible party, entered into an Administrative Order on Consent in July 2007 to undertake a Remedial Investigation and Feasibility Study. A Record of Decision was issued by the USEPA on March 30, 2021. The Company and three other potentially responsible parties have entered into a consent decree, dated September 28, 2023, with USEPA and the Commonwealth of Massachusetts that requires the remedial design and remedial action of the remedy selected in the Record of Decision for two operable units and an interim remedy for another operable unit. Remediation at this site is being managed by its current owner, to whom the Company sold the property in 1980. The Company is contractually obligated to contribute up to five percent of the environmental response costs incurred by the current owner with no limitation on the ultimate amount of contributions. The Company has paid the current owner $3.6 million for the Company’s portion of environmental response costs at the Wilmington site through December 31, 2023. The Company has recorded a liability for its portion of the estimated remediation costs for the site. Depending on the ultimate cost of the remediation at this site, the amount for which the Company is liable could differ materially from the current recorded liability. On July 29, 2022, the Company and other potentially responsible parties were notified of a possible joint claim by federal and state trustees for alleged natural resource damages related to the Wilmington site. The alleged damages may result in a range of possible penalties and the Company believes it is probable that it will have exposure for this claim; however, at this stage, the Company is unable to predict the ultimate outcome of this claim, the allocation of costs among the potentially responsible parties or what impact, if any, the outcome might have on the Company’s financial position, results of operations or cash flows.

Other U.S. Sites

Through the regular environmental monitoring of its plant production sites, the Company discovered levels of chemical contamination that were above thresholds allowed by law at its Elwood, Illinois (Millsdale) and Fieldsboro, New Jersey plants. The Company voluntarily reported its results to the applicable state environmental agencies. As a result, the Company is required to perform self-remediation of the affected areas. Based on current information, the Company believes that its recorded liability for the remediation of the affected areas is appropriate based on an estimate of expected costs. However, actual costs could differ materially from the current recorded liability.