---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-26-047516"
form_type: "8-K"
ticker: "NINE"
cik: "0001532286"
company_name: "Nine Energy Service, Inc."
filed_at: "2026-04-24T23:59:59+00:00"
generated_at: "2026-05-15T04:11:56.438796+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Nine Energy CFO Guy Sirkes resigns; Heather Schmidt named Interim CFO

## Summary
- Guy Sirkes resigns as EVP & CFO effective May 11, 2026 to accept another position.
- Heather Schmidt appointed Interim CFO effective May 11, 2026; she joined Nine in 2012.
- Schmidt currently SVP of Strategic Development & IR; previously VP of Strategic Development, IR & Marketing.
- Schmidt holds an MBA from Rice University; no family ties to directors or exec officers.
- No transactions between Schmidt and the company requiring disclosure under Item 404(a).

## SEC filing metadata
- accession: 0001213900-26-047516
- form_type: 8-K
- ticker: NINE
- cik: 0001532286
- company_name: Nine Energy Service, Inc.
- filed_at: 2026-04-24T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.55
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1532286/000121390026047516/0001213900-26-047516-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1532286/000121390026047516/ea0287435-8k_nine.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-26-047516
- JSON: https://secwatch.observer/filing/0001213900-26-047516.json
- Plain text: https://secwatch.observer/filing/0001213900-26-047516.txt

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