---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-037343"
form_type: "8-K"
ticker: "TWST"
cik: "0001581280"
company_name: "Twist Bioscience Corp"
filed_at: "2023-03-28T23:59:59+00:00"
generated_at: "2026-06-17T12:48:23.646118+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Twist Bioscience CAO Kevin Yankton resigns; CFO Thorburn to serve as interim principal accounting officer

## Summary
- Kevin Yankton resigns as CAO effective May 19, 2023 to pursue other interests; no disagreement with company.
- Company initiated search for replacement and engaged expert financial consultant reporting to CFO.
- CFO James Thorburn will serve as principal accounting officer until a successor is appointed.

## SEC filing metadata
- accession: 0001104659-23-037343
- form_type: 8-K
- ticker: TWST
- cik: 0001581280
- company_name: Twist Bioscience Corp
- filed_at: 2023-03-28T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1581280/000110465923037343/0001104659-23-037343-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1581280/000110465923037343/tm2310453d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-037343
- JSON: https://secwatch.observer/filing/0001104659-23-037343.json
- Plain text: https://secwatch.observer/filing/0001104659-23-037343.txt

## Key facts
- Executive change
  James Thorburn was appointed as Principal Accounting Officer at Twist Bioscience Corp.
  - Action: appointed
  - Role: Principal Accounting Officer
  source text: Mr. Thorburn will serve as the Company’s principal accounting officer until a successor to Mr. Yankton is appointed, in addition to his current role as the Company’s Chief Financial Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1581280/000110465923037343/0001104659-23-037343-index.htm
- Executive change
  Kevin Yankton resigned as Chief Accounting Officer at Twist Bioscience Corp.
  - Action: resigned
  - Role: Chief Accounting Officer
  source text: On March 23, 2023, Kevin Yankton, Chief Accounting Officer of Twist Bioscience Corporation (the “Company”), provided notice of his resignation from the Company effective May 19, 2023, to pursue other interests.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1581280/000110465923037343/0001104659-23-037343-index.htm

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