ESS Tech, Inc. was notified by the New York Stock Exchange (NYSE) on June 30, 2026, that proceedings will commence to delist the Company's Public Warrants. The NYSE also publicly announced on July 1, 2026, its determination to delist the Public Warrants, which trade under the symbol GWH.W. The reason for the delisting is the abnormally low trading price of the Public Warrants, as per Section 802.01D of the NYSE Listed Company Manual. Trading of the Company's common stock (GWH) on the NYSE will continue unaffected, provided the Company meets other listing requirements. Each fifteen Public Warrants are exercisable for one share of common stock at a price of $172.50 per share.