PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

EAM Investors, LLC's Holding History (CIK: 0001510989)

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

Q2 2023

Shares 49,656 Value ($000) $3,391 Avg Close $64.50 Range $47.45 - $79.65

Q1 2023

Shares 36,156 Value ($000) $1,752 Avg Close $52.83 Range $45.06 - $60.82

Q4 2022

Shares 53,346 Value ($000) $3,214 Avg Close $58.56 Range $50.89 - $66.47

Q3 2022

Shares 53,637 Value ($000) $3,252 Avg Close $31.61 Range $25.02 - $64.00

Q3 2021

Shares 64,650 Value ($000) $4,605 Avg Close $62.11 Range $45.09 - $79.75

Q2 2021

Shares 104,550 Value ($000) $5,375 Avg Close $31.20 Range $21.30 - $59.74

Q1 2021

Shares 61,657 Value ($000) $1,549 Avg Close $18.81 Range $10.72 - $28.66

Q4 2015

Shares 63,746 Value ($000) $4,342 Avg Close $60.32 Range $40.47 - $76.42

Q3 2015

Shares 56,093 Value ($000) $2,543 Avg Close $58.24 Range $42.20 - $70.52

Q2 2015

Shares 117,809 Value ($000) $6,205 Avg Close $39.47 Range $30.14 - $55.97

Q1 2015

Shares 32,250 Value ($000) $1,230 Avg Close $25.65 Range $18.76 - $45.00

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2023	49,656	$3,391	$64.50	$47.45 - $79.65
Q1 2023	36,156	$1,752	$52.83	$45.06 - $60.82
Q4 2022	53,346	$3,214	$58.56	$50.89 - $66.47
Q3 2022	53,637	$3,252	$31.61	$25.02 - $64.00
Q3 2021	64,650	$4,605	$62.11	$45.09 - $79.75
Q2 2021	104,550	$5,375	$31.20	$21.30 - $59.74
Q1 2021	61,657	$1,549	$18.81	$10.72 - $28.66
Q4 2015	63,746	$4,342	$60.32	$40.47 - $76.42
Q3 2015	56,093	$2,543	$58.24	$42.20 - $70.52
Q2 2015	117,809	$6,205	$39.47	$30.14 - $55.97
Q1 2015	32,250	$1,230	$25.65	$18.76 - $45.00