Material Event (Form 8-K)

As previously reported, on November 19, 2025, Exact Sciences Corporation, a Delaware corporation ("Exact"), entered into an Agreement and Plan of Merger (the "Merger Agreement") with Abbott Laboratories, an Illinois corporation ("Abbott"), and Badger Merger Sub I, Inc., a Delaware corporation and a direct, wholly owned subsidiary of Abbott ("Merger Sub"), pursuant to which, among other things and subject to the conditions contained in the Merger Agreement, Merger Sub will merge with and into Exact (the "Merger"), with Exact surviving as a direct, wholly owned subsidiary of Abbott.

As of March 19, 2026, the parties have received all regulatory approvals and clearances required to consummate the Merger in accordance with the terms of the Merger Agreement. Exact's stockholders previously approved the Merger at a special meeting of stockholders on February 20, 2026. The Merger is anticipated to close on March 23, 2026, subject to the satisfaction or waiver of the remaining conditions to closing under the Merger Agreement.