---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-147662"
form_type: "8-K"
ticker: "AMGN"
cik: "0000318154"
company_name: "AMGEN INC"
filed_at: "2023-05-18T23:59:59+00:00"
generated_at: "2026-06-14T21:36:12.633847+00:00"
event_type: "regulatory"
sentiment: "negative"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# FTC obtains stipulated TRO blocking Amgen's Horizon acquisition until Sept 15 or court ruling

## Summary
- FTC filed complaint May 16, 2023 in N.D. Illinois seeking to enjoin $27.8B acquisition of Horizon Therapeutics.
- Stipulated TRO granted May 17, 2023: Amgen and Horizon cannot close deal until Sept 15, 2023 or 2nd business day after court rules on FTC's preliminary injunction request.
- Parties agreed to the stipulated TRO to allow court to consider the FTC's request.

## SEC filing metadata
- accession: 0001193125-23-147662
- form_type: 8-K
- ticker: AMGN
- cik: 0000318154
- company_name: AMGEN INC
- filed_at: 2023-05-18T23:59:59+00:00
- event_type: regulatory
- sentiment: negative
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/318154/000119312523147662/0001193125-23-147662-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/318154/000119312523147662/d499865d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-147662
- JSON: https://secwatch.observer/filing/0001193125-23-147662.json
- Plain text: https://secwatch.observer/filing/0001193125-23-147662.txt

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