X0609 4 2026-05-08 0000730464 Covista Inc. CVSA 0001646763 BECK DOUGLAS G. false 233 S. WACKER DRIVE SUITE 800 CHICAGO IL 60606 1 SVP, GC, Corp. Sec & ISS 1 Common Stock 2026-05-08 4 S 0 9615 127.0287 D 38159 D This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 11, 2025 in accordance with Covista's Insider Sales and Ownership Policy Addendum. Shares sold represent a portion of holdings in excess of Covista's Stock Ownership and Holding Requirements and were executed in pre-scheduled increments under the trading plan. No discretionary trades by the reporting person are permitted under Covista policy; all sales must occur pursuant to a pre-established Rule 10b5-1 trading plan absent a hardship exception. This transaction was executed in multiple trades at prices ranging from $125.00 to $128.20. The price reported above reflects the weighted average sales price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. /s/ Lawrence C. Bachman, attorney-in-fact for Mr. Beck 2026-05-12