Prothena launches $172.4M public offering of 3.25M ordinary shares at $53.11/share

PROTHENA CORP PUBLIC LTD CO

Underwriters agreed to buy 3,250,000 ordinary shares at $53.11 per share; 30-day option for up to 487,500 additional shares.
Net proceeds expected to be approximately $172.4 million after discounts and expenses, assuming no underwriter option exercise.
Offering expected to close on December 19, 2022; lock-up agreements for directors, officers, and certain shareholders for 90 days.
Proceeds intended for general corporate purposes; underwriting agreement includes customary indemnification provisions.

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