ATRIUM THERAPEUTICS INC

Historical 13F Holders

Symbol
RNA
CUSIP
04965N104
All holders as of
Q2 2026
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Every filing for 04965N104 since 12/18/2024, newest first.

Filer % of Class Filed
RA Capital Management, L.P. 13G/A Amendment 1
0% 8/14/2026
Event 6/30/2026
Sessa Capital IM, L.P. 13G
8.8% 8/14/2026
Event 6/30/2026
Price T Rowe Associates Inc /MD/ 13G/A Amendment 1 8.6% 8/14/2026
Event 6/30/2026
BlackRock, Inc. 13G/A Amendment 1 6.6% 7/27/2026
Event 6/30/2026
RA Capital Management, L.P. 13G
5.6% 5/15/2026
Event 3/31/2026
BlackRock, Inc. 13G 5.2% 4/27/2026
Event 3/31/2026
Price T Rowe Associates Inc /MD/ 13G 10.0% 4/8/2026
Event 3/31/2026

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 3 1.32 k $10.9 k
2026 Q2 166 15.6 M $210 M
2026 Q1 174 14.8 M $198 M