Filing Manager
Linden Capital L.P.
Reporting Manager
Linden Advisors LP
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

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Quoteable Key Fact

"Linden Capital L.P. disclosed 5.9% ownership in 1RT Acquisition Corp. Class A ordinary shares, par value $0.0001 per share (ONCH) on 05 Mar 2026."

Quick Takeaways

  • Linden Capital L.P. filed SCHEDULE 13G for 1RT Acquisition Corp. Class A ordinary shares, par value $0.0001 per share (ONCH).
  • Disclosed ownership: 5.9%.
  • Date of event: 05 Mar 2026.

What Changed

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 12 Mar 2026, 10:08.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Official SEC Source

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

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**