---
schema_version: "secwatch.filing_event.v1"
accession: "0001558370-23-010058"
form_type: "8-K"
ticker: "OMER"
cik: "0001285819"
company_name: "OMEROS CORP"
filed_at: "2023-05-16T23:59:59+00:00"
generated_at: "2026-06-14T23:16:40.642830+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

# Omeros appoints Dr. Diana T. Perkinson to board of directors

## Summary
- Board size increased to nine; Dr. Perkinson appointed effective May 12, 2023.
- Perkinson is a physician with board certifications in nephrology and internal medicine.
- Appointed to scientific committee; granted option to purchase 30,000 shares.

## SEC filing metadata
- accession: 0001558370-23-010058
- form_type: 8-K
- ticker: OMER
- cik: 0001285819
- company_name: OMEROS CORP
- filed_at: 2023-05-16T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1285819/000155837023010058/0001558370-23-010058-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1285819/000155837023010058/omer-20230512x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001558370-23-010058
- JSON: https://secwatch.observer/filing/0001558370-23-010058.json
- Plain text: https://secwatch.observer/filing/0001558370-23-010058.txt

## Key facts
- Executive change
  Diana T. Perkinson was appointed as director at OMEROS CORP.
  - Action: appointed
  - Role: director
  source text: increased the number of its directors to nine and appointed Diana T. Perkinson, M.D. as a director, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1285819/000155837023010058/0001558370-23-010058-index.htm

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