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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1559053	Prothena Corp Public Ltd Co	PRTA	Pharmaceutical Preparations (2834)	000000000

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1559422	L Karin Walker	C/O Prothena Biosciences Inc 331 Oyster Point Boulevard South San Francisco CA 94080	Chief Accounting Officer	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Ordinary Shares, Par Value $0.01 Per Share	Acquisiton	2022-10-24	20,000	$15.04	20,000	No	4	M	Direct
Ordinary Shares, Par Value $0.01 Per Share	Disposition	2022-10-24	7,907	$56.39	12,093	No	4	S	Direct
Ordinary Shares, Par Value $0.01 Per Share	Disposition	2022-10-24	7,144	$57.34	4,949	No	4	S	Direct
Ordinary Shares, Par Value $0.01 Per Share	Disposition	2022-10-24	3,785	$58.25	1,164	No	4	S	Direct
Ordinary Shares, Par Value $0.01 Per Share	Disposition	2022-10-24	1,164	$58.98	0	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Ordinary Shares	Stock Option (right to buy)	Disposition	2022-10-24	20,000	$0.00	20,000	$15.04

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
65,481		2028-06-21	No	4	M	Direct

Footnotes

The transactions reported in the Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.
The transaction was executed in multiple trades in prices ranging from $55.855 to $56.73, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The reporting person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in footnotes 2 through 5 of this Form 4.
The transaction was executed in multiple trades in prices ranging from $56.86 to $57.85, inclusive.
The transaction was executed in multiple trades in prices ranging from $57.865 to $58.81, inclusive.
The transaction was executed in multiple trades in prices ranging from $58.88 to $59.085, inclusive.
The shares subject to the option vested and became exercisable as to 25% of the total number of shares subject to the option on June 21, 2019, 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.