---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-305194"
form_type: "8-K"
ticker: "ACLX"
cik: "0001786205"
company_name: "Arcellx, Inc."
filed_at: "2023-12-28T23:59:59+00:00"
generated_at: "2026-06-07T06:26:51.580002+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Arcellx closes $200M Gilead investment and license amendment with Kite

## Summary
- Closed transactions: issued 3,242,542 shares to Gilead for $200 million aggregate.
- Includes amendment to Collaboration and License Agreement with Kite Pharma (Gilead).
- Closing followed expiration of HSR waiting period under antitrust rules.
- Shares issued on December 28, 2023; previously announced November 15, 2023.

## SEC filing metadata
- accession: 0001193125-23-305194
- form_type: 8-K
- ticker: ACLX
- cik: 0001786205
- company_name: Arcellx, Inc.
- filed_at: 2023-12-28T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1786205/000119312523305194/0001193125-23-305194-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1786205/000119312523305194/d607811d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-305194
- JSON: https://secwatch.observer/filing/0001193125-23-305194.json
- Plain text: https://secwatch.observer/filing/0001193125-23-305194.txt

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