WEBTOON Entertainment Inc.

The Company previously disclosed the resignation of Chankyu Park as Chief Technology Officer of the Company in its Current Report on Form 8-K filed with the SEC on April 13, 2026. Mr. Park remained employed by the Company through May 31, 2026 to facilitate the transition of his duties. Following his separation from employment, Mr. Park transitioned to an advisory role pursuant to a Management Advisory Agreement, dated as of May 4, 2026, by and between the Company and Mr. Park (the “Advisory Agreement”). Pursuant to the Advisory Agreement, effective June 1, 2026, Mr. Park will provide advisory services to the Company for a twelve-month period and will receive aggregate fees of KRW 320,000,000 (approximately $207,590, based on the exchange rate in effect on June 30, 2026), payable in equal monthly installments. In addition, Mr. Park’s outstanding equity awards will continue to vest in accordance with their existing vesting schedules during the term of the Advisory Agreement. In connection with his separation Mr. Park also received a separation recognition bonus in the amount of KRW 320,000,000 (approximately $207,590).

The foregoing description of the Advisory Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the Advisory Agreement, a copy of which is filed as Exhibit 10.1 to this Report and incorporated herein by reference.