---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-25-028621"
form_type: "8-K"
ticker: "CTOR"
cik: "0001851484"
company_name: "CITIUS ONCOLOGY, INC."
filed_at: "2025-04-03T23:59:59+00:00"
generated_at: "2026-05-23T22:47:38.757490+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Citius Oncology restructures $14.1M payment obligation to Eisai for LYMPHIR milestone and development costs

## Summary
- Total owed: $5.9M milestone payment plus $8.23M in development and inventory costs.
- Payment schedule: $2.535M due July 15, 2025; then four monthly $2.35M payments; final $2.198M due Dec 15, 2025.
- Interest at 2% per annum accrues from original due dates until actual payment.
- Parties release each other from claims related to past non-payment; License Agreement otherwise unchanged.

## SEC filing metadata
- accession: 0001213900-25-028621
- form_type: 8-K
- ticker: CTOR
- cik: 0001851484
- company_name: CITIUS ONCOLOGY, INC.
- filed_at: 2025-04-03T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1851484/000121390025028621/0001213900-25-028621-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1851484/000121390025028621/ea0237095-8k_citius.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-25-028621
- JSON: https://secwatch.observer/filing/0001213900-25-028621.json
- Plain text: https://secwatch.observer/filing/0001213900-25-028621.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.