Trade Summary

6 days ago, Isaacs Michael John, serving as General Counsel & Company Sec. at PROTHENA CORP PUBLIC LTD CO (PRTA), sold 8,386 shares at $8.47 per share, for a total transaction value of $71,055.42. Following this transaction, Isaacs Michael John now holds 35,745 shares of PRTA.

This sale represents a 19.00% decrease in Isaacs Michael John's stake in the company. This is considered a high-conviction trade given the significant change in ownership.

The trade was executed on Wednesday, July 29, 2026 and publicly disclosed via SEC Form 4 filing on Friday, July 31, 2026 (accepted Jul 30, 8:30 PM ET), 2 days after the trade was made.

PROTHENA CORP PUBLIC LTD CO operates in the HEALTHCARE sector, specifically within the BIOTECHNOLOGY industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.