Lars Ekman - 03 Jan 2023 Form 4 Insider Report for PROTHENA CORP PUBLIC LTD CO (PRTA)

Role: Director, Chair of the Board
Signature: /s/ Michael J. Malecek, as attorney-in-fact for Lars G. Ekman
Issuer symbol: PRTA
Transactions as of: 03 Jan 2023
Net transactions value: -$784,911
Form type: 4
Filing time: 05 Jan 2023, 20:42:00 UTC
Previous filing: 02 Dec 2022
Next filing: 19 May 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	PRTA	Ordinary Shares, par value $0.01 per share	Options Exercise	$101,496	+15,834	+6516%	$6.41	16,077	03 Jan 2023	Direct
transaction	PRTA	Ordinary Shares, par value $0.01 per share	Sale	$184,707	-3,411	-21%	$54.15	12,666	03 Jan 2023	Direct	F1, F2
transaction	PRTA	Ordinary Shares, par value $0.01 per share	Sale	$160,341	-2,897	-23%	$55.35	9,769	03 Jan 2023	Direct	F1, F3
transaction	PRTA	Ordinary Shares, par value $0.01 per share	Sale	$372,970	-6,621	-68%	$56.33	3,148	03 Jan 2023	Direct	F1, F4
transaction	PRTA	Ordinary Shares, par value $0.01 per share	Sale	$74,244	-1,303	-41%	$56.98	1,845	03 Jan 2023	Direct	F1, F5
transaction	PRTA	Ordinary Shares, par value $0.01 per share	Sale	$89,353	-1,523	-83%	$58.67	322	03 Jan 2023	Direct	F1, F6
transaction	PRTA	Ordinary Shares, par value $0.01 per share	Sale	$595	-10	-3.1%	$59.46	312	03 Jan 2023	Direct	F1
transaction	PRTA	Ordinary Shares, par value $0.01 per share	Sale	$4,198	-69	-22%	$60.85	243	03 Jan 2023	Direct	F1, F7

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)	Options Exercise	$0	-15,834	-100%	$0.000000^*	0	03 Jan 2023	Ordinary Shares	15,834	$6.41	Direct	F8

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

Explanation of Responses:

Id	Content
F1	The transactions reported in the Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.
F2	The transaction was executed in multiple trades in prices ranging from $53.74 to $54.68, 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 7 of this Form 4.
F3	The transaction was executed in multiple trades in prices ranging from $54.75 to $55.74, inclusive.
F4	The transaction was executed in multiple trades in prices ranging from $55.76 to $56.755, inclusive.
F5	The transaction was executed in multiple trades in prices ranging from $56.76 to $57.31, inclusive.
F6	The transaction was executed in multiple trades in prices ranging from $58.195 to $58.92, inclusive.
F7	The transaction was executed in multiple trades in prices ranging from $60.77 to $61.00, inclusive.
F8	The option was granted on January 29, 2013, and all shares subject to the option were fully vested and exercisable January 29, 2014. The option would have expired in approximately one month and would have been forfeited to the extent it was not exercised on or prior to January 29, 2023.