---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-22-083871"
form_type: "8-K"
ticker: "ACLX"
cik: "0001786205"
company_name: "Arcellx, Inc."
filed_at: "2022-03-24T23:59:59+00:00"
generated_at: "2026-06-26T18:41:26.744872+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Arcellx posts $65M FY2021 net loss; IPO cash extends runway into H2 2023

## Summary
- Net loss for FY2021 was $65.0M vs $32.1M in 2020; Q4 net loss $20.7M vs $9.1M.
- Completed IPO in Feb 2022 raising $142.3M gross ($128M net); year-end cash $104.6M.
- Lead candidate CART-ddBCMA moving to Phase 2 pivotal trial by end of 2022.
- R&D expense $46.9M in 2021 (up $21.8M YoY); G&A $18.1M (up $11.1M YoY).
- Cash on hand after IPO expected to fund operations into second half of 2023.

## SEC filing metadata
- accession: 0001193125-22-083871
- form_type: 8-K
- ticker: ACLX
- cik: 0001786205
- company_name: Arcellx, Inc.
- filed_at: 2022-03-24T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1786205/000119312522083871/0001193125-22-083871-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1786205/000119312522083871/d339086d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-22-083871
- JSON: https://secwatch.observer/filing/0001193125-22-083871.json
- Plain text: https://secwatch.observer/filing/0001193125-22-083871.txt

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