Prothena Corp Public Ltd Co

MASSACHUSETTS FINANCIAL SERVICES CO /MA/ PRTA

Report date

12/31/2025

Quarter

2025 Q4

Filed

1/22/2026

Shares

45,970

Value ($000)

439

Weight

0.0%

2020 Q3 - 2025 Q4 (12 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2025 Q4	1/22/2026	439	0.0%	45,970	12/31/2025
2025 Q3	10/29/2025	463	0.0%	47,489	9/30/2025
2025 Q2	8/8/2025	269	0.0%	44,364	6/30/2025
2025 Q1	5/2/2025	542	0.0%	43,816	3/31/2025
2024 Q4	2/12/2025	621	0.0%	44,815	12/31/2024
2022 Q1	5/11/2022	496	0.0%	13,556	3/31/2022
2021 Q4	2/10/2022	2,068	0.0%	41,858	12/31/2021
2021 Q3	11/10/2021	3,042	0.0%	42,706	9/30/2021
2021 Q2	8/13/2021	2,224	0.0%	43,268	6/30/2021
2021 Q1	5/13/2021	1,842	0.0%	73,339	3/31/2021
2020 Q4	5/12/2021	1,304	0.0%	108,594	12/31/2020
2020 Q3	11/12/2020	871	0.0%	87,221	9/30/2020