PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

MASSMUTUAL TRUST CO FSB/ADV's Holding History (CIK: 0001103653)

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

Q1 2025

Shares 112 Value ($000) $1 Avg Close $14.14 Range $11.78 - $16.66

Q4 2024

Shares 20 Value ($000) $0 Avg Close $15.77 Range $11.70 - $18.88

Q3 2024

Shares 6 Value ($000) $0 Avg Close $21.50 Range $15.52 - $25.42

Q2 2024

Shares 27 Value ($000) $1 Avg Close $21.64 Range $18.69 - $26.36

Q4 2023

Shares 62 Value ($000) $2 Avg Close $38.49 Range $28.51 - $55.89

Q1 2017

Shares 24 Value ($000) $1,339 Avg Close $52.54 Range $45.13 - $63.14

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2025	112	$1	$14.14	$11.78 - $16.66
Q4 2024	20	$0	$15.77	$11.70 - $18.88
Q3 2024	6	$0	$21.50	$15.52 - $25.42
Q2 2024	27	$1	$21.64	$18.69 - $26.36
Q4 2023	62	$2	$38.49	$28.51 - $55.89
Q1 2017	24	$1,339	$52.54	$45.13 - $63.14