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. Each filer's latest filing for 04965N104 since 12/18/2024, largest first.

Filer % of Class Filed
Sessa Capital IM, L.P. 13G
8.8% 8/14/2026
Event 6/30/2026
Price T Rowe Associates Inc /MD/ 13G/A 8.6% 8/14/2026
Event 6/30/2026
BlackRock, Inc. 13G/A 6.6% 7/27/2026
Event 6/30/2026
Under 5%, checked the "5 percent or less" box, or amended by a later filing (1)
RA Capital Management, L.P. 13G/A
0% 8/14/2026
Event 6/30/2026

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