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What Happened to Silverback Therapeutics? Its Merger With ARS Pharmaceuticals

Silverback’s proposed 2022 merger with ARS Pharmaceuticals closed that November. The combined company later secured FDA approval for neffy, a nasal epinephrine product for eligible patients.
From TheFinanceBase Team1 min to read
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The July 2022 headline described a proposed merger between Silverback Therapeutics and San Diego-based ARS Pharmaceuticals—not a current transaction. The all-stock deal closed on November 8, 2022, and the surviving company took the ARS Pharmaceuticals name. Its focus included neffy, an investigational needle-free epinephrine nasal spray at the time; the FDA approved neffy in 2024 for certain patients.

What did Silverback Therapeutics announce?

On July 21, 2022, Silverback Therapeutics and ARS Pharmaceuticals announced a definitive all-stock merger agreement. The companies said the combined business would focus on potential approval and commercialization of neffy, then an investigational intranasal epinephrine product for Type I allergic reactions, including anaphylaxis. The announcement projected approximately $265 million in cash, cash equivalents, and marketable securities at closing. That was an estimate made when the agreement was announced, not a confirmed closing balance or a statement of the company’s finances today.

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