---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-062914"
form_type: "8-K"
ticker: "ACLX"
cik: "0001786205"
company_name: "Arcellx, Inc."
filed_at: "2023-11-13T23:59:59+00:00"
generated_at: "2026-06-08T05:20:13.050136+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Arcellx Q3 net loss $39.3M vs $92.9M prior year; cash $482.7M; CART-ddBCMA data at ASH with 22mo follow-up

## Summary
- Net loss narrowed to $39.3M from $92.9M in Q3 2022; collaboration revenue $15.0M from Kite license.
- Cash, equivalents and marketable securities $482.7M; company expects to fund operations into 2026.
- CART-ddBCMA Phase 1 data: median DOR, PFS and OS not reached at 22-month median follow-up; no delayed neurotoxicity.
- Upcoming ASH oral presentation on Dec 11, 2023 with new data at median 26.5-month follow-up.
- R&D expenses $43.8M (down from $83.5M) primarily due to non-cash charge for Lonza manufacturing agreement.

## SEC filing metadata
- accession: 0000950170-23-062914
- form_type: 8-K
- ticker: ACLX
- cik: 0001786205
- company_name: Arcellx, Inc.
- filed_at: 2023-11-13T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1786205/000095017023062914/0000950170-23-062914-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1786205/000095017023062914/aclx-20231113.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-062914
- JSON: https://secwatch.observer/filing/0000950170-23-062914.json
- Plain text: https://secwatch.observer/filing/0000950170-23-062914.txt

## Key facts
- Earnings Releases
  Arcellx, Inc. reported third quarter ended September 30, 2023 results: revenue $15.0 million, net income Net loss was $39.3 million.
  - Period: third quarter ended September 30, 2023
  - Revenue: $15.0 million
  - Net income: Net loss was $39.3 million
  - Result: reported results
  source text: million. Arcellx anticipates that its cash, cash equivalents, and marketable securities will fund its operations into 2026. Collaboration revenue: Collaboration revenue was $15.0 million and zero for the quarters ended September 30, 2023 and 2022, respectively. The revenue results for the three months ended September 30, 2023 is from the recognition of research
  evidence_url: https://www.sec.gov/Archives/edgar/data/1786205/000095017023062914/0000950170-23-062914-index.htm

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