---
schema_version: "secwatch.filing_event.v1"
accession: "0001897982-23-000054"
form_type: "8-K"
ticker: null
cik: "0001897982"
company_name: "Aspen Technology, Inc."
filed_at: "2023-10-19T23:59:59+00:00"
generated_at: "2026-06-09T21:11:41.599420+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# AspenTech CFO Chantelle Breithaupt resigning effective Dec 31; interim CFO named

## Summary
- CFO Chantelle Breithaupt resigns to pursue another opportunity, effective December 31, 2023.
- Christopher Stagno (SVP, Chief Accounting Officer) appointed Interim CFO as of January 1, 2024.
- Company reaffirms full-year fiscal 2024 guidance issued on August 1, 2023.
- Search for permanent CFO underway with assistance of executive search firm.

## SEC filing metadata
- accession: 0001897982-23-000054
- form_type: 8-K
- cik: 0001897982
- company_name: Aspen Technology, Inc.
- filed_at: 2023-10-19T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1897982/000189798223000054/0001897982-23-000054-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1897982/000189798223000054/azpn-20231013.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001897982-23-000054
- JSON: https://secwatch.observer/filing/0001897982-23-000054.json
- Plain text: https://secwatch.observer/filing/0001897982-23-000054.txt

## Key facts
- Executive change
  Christopher Stagno was appointed as Interim Chief Financial Officer at Aspen Technology, Inc..
  - Action: appointed
  - Role: Interim Chief Financial Officer
  source text: Christopher Stagno, who currently serves as Senior Vice President, Chief Accounting Officer, will assume the role of Interim Chief Financial Officer, effective January 1, 2024, should a permanent Chief Financial Officer not have been named by such time.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1897982/000189798223000054/0001897982-23-000054-index.htm
- Executive change
  Chantelle Breithaupt resigned as Chief Financial Officer at Aspen Technology, Inc..
  - Action: resigned
  - Role: Chief Financial Officer
  source text: On October 13, 2023, Chantelle Breithaupt, the Chief Financial Officer of Aspen Technology, Inc. (the “Company”) submitted her resignation, effective December 31, 2023 (the “Effective Date”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1897982/000189798223000054/0001897982-23-000054-index.htm

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