Tonix Pharmaceuticals Holding Corp., of New York, said it closed an underwritten public offering of 9 million shares at 60 cents each, for total gross proceeds of approximately $5.4 million.

Arvinas Inc., of New Haven, Conn., reported preclinical data on its tau-targeted Protac protein degrader program at the Alzheimer's Association International Conference in Los Angeles. After parenteral administration of the drug, more than 95% of pathologic tau protein was eliminated in the brain of a mouse tauopathy model.

Obseva SA, of Geneva, said its board approved an increase of its share capital from 45.5 million shares to 48.6 million. The shares will be listed on the SIX Swiss Exchange on or around July 23.

Xenetic Biosciences Inc., of Framingham, Mass., priced a public offering of 2.3 million shares and warrants to purchase up to 2.3 million shares.