Tran Nguyen - Mar 2, 2023 Form 4 Insider Report for PROTHENA CORP PUBLIC LTD CO (PRTA)

Role: Chief Strategy Officer and CFO
Signature: /s/ Michael Malecek, as Attorney in Fact for Tran B. Nguyen
Stock symbol: PRTA
Transactions as of: Mar 2, 2023
Transactions value $: $0
Form type: 4
Date filed: 3/3/2023, 08:30 PM
Previous filing: Feb 17, 2023
Next filing: Mar 17, 2023

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	PRTA	Stock Option (Right to Buy)	Award	$0	+48K		$0.00	48K	Mar 2, 2023	Ordinary Shares	48K	$52.97	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The shares subject to the option will vest and become exercisable as to 25% of the total number of shares subject to the option on March 2, 2024 and with respect to 1/48th of the total number of shares subject to the option in successive, equal monthly installments on each monthly anniversary thereafter, subject to the Reporting Person's continued employment with the Issuer on each such vesting date.
F2	The Reporting Person holds options that give him the right to acquire an aggregate of 911,837 shares at exercise prices ranging from $6.73 to $52.97, of which 731,837 are currently exercisable, and 180,000 are currently unexercisable but vest over time, subject to the Reporting Person's continued employment with the Issuer on each applicable vesting date of each option award. Certain of these options are subject to an order regarding the separation of assets in accordance with a divorce settlement agreement.

Content

The shares subject to the option will vest and become exercisable as to 25% of the total number of shares subject to the option on March 2, 2024 and with respect to 1/48th of the total number of shares subject to the option in successive, equal monthly installments on each monthly anniversary thereafter, subject to the Reporting Person's continued employment with the Issuer on each such vesting date.

The Reporting Person holds options that give him the right to acquire an aggregate of 911,837 shares at exercise prices ranging from $6.73 to $52.97, of which 731,837 are currently exercisable, and 180,000 are currently unexercisable but vest over time, subject to the Reporting Person's continued employment with the Issuer on each applicable vesting date of each option award. Certain of these options are subject to an order regarding the separation of assets in accordance with a divorce settlement agreement.