PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

SABBY MANAGEMENT, LLC's Holding History (CIK: 0001535610)

Note: Option positions (PUT/CALL) are excluded.

Q1 2018

Shares 24,500 Value ($000) $899 Avg Close $36.37 Range $27.19 - $46.14

Q4 2017

Shares 24,730 Value ($000) $927 Avg Close $50.91 Range $34.85 - $64.96

Q1 2016

Shares 40,000 Value ($000) $1,646 Avg Close $39.14 Range $28.20 - $67.32

Q2 2014

Shares 9,800 Value ($000) $221 Avg Close $25.01 Range $18.52 - $41.33

Q4 2013

Shares 19,000 Value ($000) $504 Avg Close $25.08 Range $18.93 - $30.55

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	24,500	$899	$36.37	$27.19 - $46.14
Q4 2017	24,730	$927	$50.91	$34.85 - $64.96
Q1 2016	40,000	$1,646	$39.14	$28.20 - $67.32
Q2 2014	9,800	$221	$25.01	$18.52 - $41.33
Q4 2013	19,000	$504	$25.08	$18.93 - $30.55