Michael J. Isaacs

Insider Reports History

Reporting-owner location: Brisbane, CA
Latest reporting-owner signature: /s/ Michael J. Isaacs
Source: Latest parsed Forms 3/4/5 signature
Transaction source note: Rows are grouped by transaction date from the original SEC filing. Open the aggregated insider activity page to review issuer-level activity across dates.

Reported holdings for Michael J. Isaacs

Form 4 holding General Counsel & Company Sec.

PROTHENA CORP PUBLIC LTD CO

Security class: Ordinary Shares, par value $0.01 per share
Shares / value: 35,745
Estimated value: $302,870
Report date: 29 Jul 2026
Price: $8.47
Ownership: Direct

Insider Reports Filed by Michael J. Isaacs

4 PRTA

PROTHENA CORP PUBLIC LTD CO

Report period: 28 Jul 2026
Transactions: 2
Transaction value: -$71,055
Accepted by SEC: 30 Jul 2026, 20:30
Role: General Counsel & Company Sec.
Next action: Open filing details

3 PRTA

PROTHENA CORP PUBLIC LTD CO

Report period: 08 Jun 2026
Transactions: 0
Transaction value: $0
Accepted by SEC: 12 Jun 2026, 16:18
Role: General Counsel & Company Sec.
Next action: Open filing details

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