---
schema_version: "secwatch.filing_event.v1"
accession: "0000856982-26-000002"
form_type: "8-K"
ticker: "MMSI"
cik: "0000856982"
company_name: "MERIT MEDICAL SYSTEMS INC"
filed_at: "2026-01-08T23:59:59+00:00"
generated_at: "2026-05-16T11:17:05.152936+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Merit Medical founder Lampropoulos resigns as Chair; preliminary Q4 revenue up ~10-11% YoY

## Summary
- Fred P. Lampropoulos resigned as director and Chair on Jan 4, after earlier stepping down as CEO and Executive Chair; three-month consulting agreement at $250K/month.
- F. Ann Millner appointed Chair of the Board, effective Jan 5; Board reduced from 11 to 10 members.
- Preliminary Q4 2025 revenue $389M–$395M, up 10–11% YoY; constant currency revenue up 8–10% YoY.
- Full Q4 and FY 2025 earnings, plus FY 2026 guidance, to be reported on Feb 24, 2026 after market close.
- Lampropoulos' resignation not due to any dispute or matter related to financial reporting or operations.

## SEC filing metadata
- accession: 0000856982-26-000002
- form_type: 8-K
- ticker: MMSI
- cik: 0000856982
- company_name: MERIT MEDICAL SYSTEMS INC
- filed_at: 2026-01-08T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 2.02, 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/856982/000085698226000002/0000856982-26-000002-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/856982/000085698226000002/mmsi-20260104x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000856982-26-000002
- JSON: https://secwatch.observer/filing/0000856982-26-000002.json
- Plain text: https://secwatch.observer/filing/0000856982-26-000002.txt

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