---
schema_version: "secwatch.filing_event.v1"
accession: "0001140361-26-035091"
form_type: "8-K"
ticker: "ATAI"
cik: "0002081043"
company_name: "AtaiBeckley Inc."
filed_at: "2026-08-31T20:38:46+00:00"
generated_at: "2026-08-31T20:40:12.987149+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# ATAI's merger with Eli Lilly clears US HSR and UK CMA; Australian waiting period expires Sept 10

## Summary
- US HSR waiting period for ATAI-Eli Lilly merger expired at 11:59 p.m. ET on Aug 28, 2026.
- UK CMA responded Aug 21, 2026, indicating no further questions on the merger briefing.
- Australian ACCC determined Aug 27, 2026, merger may proceed subject to 14-day waiting period expiring Sept 10, 2026 at 10:00 a.m. ET.
- Merger agreement dated July 15, 2026; ATAI to become wholly owned subsidiary of Eli Lilly.

## SEC filing metadata
- accession: 0001140361-26-035091
- form_type: 8-K
- ticker: ATAI
- cik: 0002081043
- company_name: AtaiBeckley Inc.
- filed_at: 2026-08-31T20:38:46+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2081043/000114036126035091/0001140361-26-035091-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2081043/000114036126035091/ef20081348_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001140361-26-035091
- JSON: https://secwatch.observer/filing/0001140361-26-035091.json
- Plain text: https://secwatch.observer/filing/0001140361-26-035091.txt

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