---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-063062"
form_type: "8-K"
ticker: "ACET"
cik: "0001720580"
company_name: "Adicet Bio, Inc."
filed_at: "2023-11-13T23:59:59+00:00"
generated_at: "2026-06-08T05:16:50.064950+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

# Adicet Bio director Bastiano Sanna resigns; Katie Peng joins Audit Committee

## Summary
- Bastiano Sanna resigned from Board and Audit Committee effective Nov 7, 2023; no disagreement cited.
- Board size reduced from 9 to 8 members; no replacement expected for Sanna's seat.
- Katie Peng appointed to Audit Committee effective Nov 7; she meets Nasdaq independence standards.
- Audit Committee now comprises Steve Dubin (chair), Andrew Sinclair, and Katie Peng.

## SEC filing metadata
- accession: 0000950170-23-063062
- form_type: 8-K
- ticker: ACET
- cik: 0001720580
- company_name: Adicet Bio, Inc.
- filed_at: 2023-11-13T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1720580/000095017023063062/0000950170-23-063062-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1720580/000095017023063062/acet-20231107.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-063062
- JSON: https://secwatch.observer/filing/0000950170-23-063062.json
- Plain text: https://secwatch.observer/filing/0000950170-23-063062.txt

## Key facts
- Executive change
  Bastiano Sanna resigned as Director at Adicet Bio, Inc..
  - Action: resigned
  - Role: Director
  source text: On November 7, 2023 (the “Effective Date”), Bastiano Sanna, Ph.D., a current Class III member of the Board of Directors (the “Board”) of Adicet Bio, Inc. (the “Company”), notified the Company of his resignation from the Board and Audit Committee of the Board (“Audit Committee”), effective as of the Effective Date.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1720580/000095017023063062/0000950170-23-063062-index.htm

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