Linden Capital L.P. - 05 Mar 2026 SCHEDULE 13G Report for 1RT Acquisition Corp. Class A ordinary shares, par value $0.0001 per share (ONCH)

Filing Manager
Linden Capital L.P.
Reporting Manager
Linden Advisors LP
Security
1RT Acquisition Corp. Class A ordinary shares, par value $0.0001 per share
Symbol
ONCH
Shares outstanding
17,120,339 shares
Disclosed Ownership
1,010,100 shares
Ownership
5.9%
Form type
SCHEDULE 13G
Filing time
12 Mar 2026, 10:08:51 UTC
Date of event
05 Mar 2026
SEC
View on sec.gov

Reporting Managers (4)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Linden Capital L.P. 5.6% 973,096 0 973,096 /S/ Saul Ahn Saul Ahn, Authorized Signatory
Linden GP LLC 5.6% 973,096 0 973,096 /S/ Saul Ahn Saul Ahn, Authorized Signatory
Linden Advisors LP 5.9% 1,010,100 0 1,010,100 /S/ Saul Ahn Saul Ahn, General Counsel
Siu Min Wong 5.9% 1,010,100 0 1,010,100 /S/ Saul Ahn Saul Ahn, Attorney-in-Fact for Siu Min Wong**