Stepan Co.

Item 5.07 Submission of Matters to a Vote of Security Holders. Stepan Company (“Stepan”) held its Annual Meeting of Stockholders on April 28, 2026 (the “Annual Meeting”). At the Annual Meeting, there were 19,939,848 shares of Stepan’s common stock represented to vote either in person or by proxy, which represented a quorum. Stockholders voted on the following matters at the Annual Meeting: (1) election of three nominees to serve as directors until the annual meeting of stockholders to be held in 2029; (2) an advisory vote to approve the compensation of Stepan’s named executive officers; and (3) ratification of the appointment of Deloitte & Touche LLP as Stepan’s independent registered public accounting firm for 2026. Set forth below are the matters acted upon at the Annual Meeting and final voting results on each such matter as reported by Stepan’s inspector of elections. Proposal 1: Election of Directors NAME FOR AGAINST ABSTAIN BROKER NON-VOTES ──────────────────────────────────────────────────────────────────────────────────────── Joaquin Delgado 17,708,824 574,142 18,146 1,638,736 Corning F. Painter, 18,083,634 199,377 18,100 1,638,736 F. Quinn Stepan, Jr. 17,761,172 528,911 11,029 1,638,736 Proposal 2: Advisory Vote to Approve the Compensation of Stepan’s Named Executive Officers FOR AGAINST ABSTAIN BROKER NON-VOTES ──────────────────────────────────────────────────────────────── 17,000,565 1,233,415 67,131 1,638,736 Proposal 3: Ratification of the Appointment of Deloitte & Touche LLP as Stepan’s Independent Registered Public Accounting Firm for 2026 FOR AGAINST ABSTAIN ──────────────────────────────────────── 19,630,780 289,370 19,698