Certain Stock Appreciation Rights of Outbrain Inc. are subject to a Lock-Up Agreement Ending on 19-JAN-2022. These Stock Appreciation Rights will be under lockup for 181 days starting from 22-JUL-2021 to 19-JAN-2022. Details: The officers, directors and holders of substantially all of common stock and securities convertible into, or exercisable for, common stock, have agreed with the underwriters, subject to certain exceptions, not to dispose of or hedge any of their common stock or securities convertible into or exchangeable for shares of common stock during the period from the date of this prospectus continuing through the date 180 days after the date of this prospectus, except with the prior written consent of Citigroup Global Markets Inc.