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Isaacs Michael John

SEC insider (Form 3/4/5 filer). CIK 0002127815. General Counsel & Company Sec. at PROTHENA CORP PUBLIC LTD CO (PRTA). 2 reported Form 4/5 transactions since Sep 2024; latest on Jul 29, 2026. Located in BRISBANE, CA.

Companies Isaacs Michael John has filed insider reports for

  • PROTHENA CORP PUBLIC LTD CO (PRTA): Officer, General Counsel & Company Sec.
Isaacs Michael John profile photo

Isaacs Michael John

CIK: 0002127815

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)1 (50.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)0 (0.0%)

Compensation grants

Other (G, F, J, C, D, …)1 (50.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

PROTHENA CORP PUBLIC LTD CO logo
PRTA

PROTHENA CORP PUBLIC LTD CO

Officer

Discretionary Trading P&L

Holdings

Transaction History (2 total)

  • PROTHENA CORP PUBLIC LTD CO logo
    PRTA

    PROTHENA CORP PUBLIC LTD CO

    Jul 29, 2026
    Sale
    Direct
    8.4K shares at avg. $8.47$71K
  • PROTHENA CORP PUBLIC LTD CO logo
    PRTA

    PROTHENA CORP PUBLIC LTD CO

    Jul 28, 2026
    Tax Payment
    Direct
    4.7K shares at avg. $8.56$40K

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