---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-003907"
form_type: "8-K"
ticker: "SUPN"
cik: "0001356576"
company_name: "SUPERNUS PHARMACEUTICALS, INC."
filed_at: "2026-01-28T23:59:59+00:00"
generated_at: "2026-05-16T06:55:12.396893+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "low"
source: SEC EDGAR
---

# Supernus amends 2018 merger agreement milestone terms with Reich Consulting

## Summary
- First Amendment to Merger Agreement dated September 12, 2018, entered on January 22, 2026.
- Amendment adjusts timing and payment terms for certain milestones under the original deal.
- Exhibit 10.1 filed with limited redactions for non-material, competitively harmful details.
- No financial figures or revised milestone amounts disclosed in the filing.

## SEC filing metadata
- accession: 0001628280-26-003907
- form_type: 8-K
- ticker: SUPN
- cik: 0001356576
- company_name: SUPERNUS PHARMACEUTICALS, INC.
- filed_at: 2026-01-28T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: low
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1356576/000162828026003907/0001628280-26-003907-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1356576/000162828026003907/supn-20260128.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-003907
- JSON: https://secwatch.observer/filing/0001628280-26-003907.json
- Plain text: https://secwatch.observer/filing/0001628280-26-003907.txt

## Key facts
- Material Agreements
  SUPERNUS PHARMACEUTICALS, INC. amended First Amendment with Reich Consulting Group, Inc. as the Securityholder Representative (effective 2026-01-22).
  - Action: amendment
  - Agreement: merger
  - Counterparty: Reich Consulting Group, Inc. as the Securityholder Representative
  - Effective: 2026-01-22
  source text: On January 22, 2026, Supernus Pharmaceuticals, Inc. (the “Company”) entered into a First Amendment (the “Amendment”) to the Agreement and Plan of Merger dated September 12, 2018 (the “Merger Agreement”), with Reich Consulting Group, Inc. as the Securityholder Representative.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1356576/000162828026003907/0001628280-26-003907-index.htm

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