ACON S2 Acquisition Corp.
STWO
NASDAQ Capital Market8.21
USD
+0.57
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ACON S2 Acquisition Corp.
STWO
(NASDAQ Capital Market)
Recent
price
8.21
P/E
ratio
- -
div
yld
- -
ROIC.AI
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in mil. unless spec.- Similar Companies
- Business
- ACON S2 Acquisition Corp. (NASDAQ: STWO) is a blank check company sponsored by an affiliate of ACON Investments, L.L.C. that pursues mergers, capital stock exchanges, asset acquisitions, stock purchases, reorganizations, or similar business combinations, primarily targeting businesses employing a strategic approach to sustainability where environmental, social, or economic sustainability drives performance and success; it focuses on overall transaction values between $500 million and $2.0 billion. Founded in 2020 and headquartered in Washington, D.C., the company offers no current products or operational services beyond its special purpose acquisition vehicle structure, including Class A ordinary shares and warrants. In October 2021, ACON S2 completed a definitive business combination with ESS Tech, Inc., a manufacturer of long-duration iron flow batteries such as Energy Warehouse and Energy Center for commercial and utility-scale energy storage using earth-abundant iron, salt, and water electrolytes; the merger provided approximately $308 million in pro forma net cash, including a $250 million PIPE led by investors like Fidelity Management & Research Company LLC, Koch Industries, Tortoise Capital Advisors, SB Energy Global Holdings Ltd., Breakthrough Energy Ventures, and BASF Venture Capital, resulting in ESS Inc. trading on the NYSE under ticker GWH while STWO shares persist with ongoing institutional ownership and trading activity as of late 2025. The transaction supported ESS's manufacturing expansion to 16 GWh across three continents and reinforced ACON S2's legacy in sustainability-focused investments without further disclosed acquisitions, partnerships, or strategic shifts in the last 1-2 years. ACON S2 operates principally in North America with international investor backing and maintains SEC filings indicating its post-merger status.
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ESS Inc., a Long-Duration Energy Storage Solutions Company, to Become a Publicly Listed Company Through Merger with ACON S2 Acquisition Corp.