---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-22-151768"
form_type: "8-K"
ticker: "ACLX"
cik: "0001786205"
company_name: "Arcellx, Inc."
filed_at: "2022-05-16T23:59:59+00:00"
generated_at: "2026-06-25T15:16:25.627110+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Arcellx appoints Olivia Ware to board, replacing Lewis T. Williams effective May 16

## Summary
- Lewis T. Williams resigned from board effective May 16, 2022; no disagreement cited.
- Board reduced authorized size from nine to seven directors on May 15.
- Olivia Ware appointed as Class II director effective May 16, term until 2024 annual meeting.
- Ware brings over 20 years biopharma experience; previously SVP at Principia, Genentech veteran.
- Ware receives $40k annual cash retainer, $4k for nominating committee, initial option grant valued at $600k.

## SEC filing metadata
- accession: 0001193125-22-151768
- form_type: 8-K
- ticker: ACLX
- cik: 0001786205
- company_name: Arcellx, Inc.
- filed_at: 2022-05-16T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1786205/000119312522151768/0001193125-22-151768-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1786205/000119312522151768/d355647d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-22-151768
- JSON: https://secwatch.observer/filing/0001193125-22-151768.json
- Plain text: https://secwatch.observer/filing/0001193125-22-151768.txt

## Key facts
- Executive change
  Olivia Ware was appointed as Director at Arcellx, Inc..
  - Action: appointed
  - Role: Director
  source text: On May 15, 2022 the Board appointed Olivia Ware to fill the vacancy on the Board, effective May 16, 2022, as a Class II director for a term that will expire at the annual meeting of stockholders to be held in 2024, subject to her earlier resignation, death or removal.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1786205/000119312522151768/0001193125-22-151768-index.htm
- Executive change
  Lewis T. Williams resigned as Director at Arcellx, Inc..
  - Action: resigned
  - Role: Director
  source text: Lewis T. Williams notified us that he intended to resign from the board of directors (the “Board”) of Arcellx, Inc. (the “Company”) and from the Board committees on which he serves.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1786205/000119312522151768/0001193125-22-151768-index.htm

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