---
schema_version: "secwatch.filing_event.v1"
accession: "0001558370-23-008805"
form_type: "8-K"
ticker: "OMER"
cik: "0001285819"
company_name: "OMEROS CORP"
filed_at: "2023-05-09T23:59:59+00:00"
generated_at: "2026-06-15T08:23:42.043566+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Omeros Q1 net loss $33.7M; receives $200M milestone; OMS906 data positive in PNH

## Summary
- Net loss $33.7M ($0.54 per share) vs $33.0M ($0.53) Q1 2022; cash burn $23.6M excl $200M milestone.
- Received $200M milestone from Rayner; OMIDRIA royalties $9.2M on $30.7M sales (down from $13.8M on $27.7M).
- Plans BLA resubmission for narsoplimab in TA-TMA; meeting with FDA this month.
- OMS906 in PNH: mean Hgb increased 3.4 g/dL at day 29; 100% of patients Hgb >=15.7 g/dL at day 113.
- Awarded $6.69M NIDA grant for OMS527 in cocaine use disorder.

## SEC filing metadata
- accession: 0001558370-23-008805
- form_type: 8-K
- ticker: OMER
- cik: 0001285819
- company_name: OMEROS CORP
- filed_at: 2023-05-09T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1285819/000155837023008805/0001558370-23-008805-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1285819/000155837023008805/omer-20230509x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001558370-23-008805
- JSON: https://secwatch.observer/filing/0001558370-23-008805.json
- Plain text: https://secwatch.observer/filing/0001558370-23-008805.txt

## Key facts
- Earnings Releases
  OMEROS CORP reported the first quarter ended March 31, 2023 results: net income Net loss was $33.7 million in the first quarter of 2023, or $0.54 per share, EPS $0.54 per share.
  - Period: the first quarter ended March 31, 2023
  - Net income: Net loss was $33.7 million in the first quarter of 2023, or $0.54 per share
  - EPS: $0.54 per share
  - Result: reported results
  source text: Net loss was $33.7 million in the first quarter of 2023, or $0.54 per share
  evidence_url: https://www.sec.gov/Archives/edgar/data/1285819/000155837023008805/0001558370-23-008805-index.htm

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