---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-26-104101"
form_type: "8-K"
ticker: "JSPR"
cik: "0001788028"
company_name: "Jasper Therapeutics, Inc."
filed_at: "2026-09-28T20:44:17+00:00"
generated_at: "2026-10-12T13:37:04.782926+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# Jasper Therapeutics CFO Herb Cross resigns Oct 9; CEO Jeet Mahal takes interim PFO role

## Summary
- CFO, principal financial and accounting officer and corporate secretary Herb Cross resigned effective October 9, 2026 to pursue other professional endeavors.
- Board acted September 28, 2026: CEO Jeet Mahal named interim Principal Financial Officer and VP Finance Rick Ruiz interim Principal Accounting Officer.
- Chief Operating Officer Matthew Ros was appointed interim Corporate Secretary; all three appointments take effect on Cross's resignation date.
- Ruiz, 62, joined Jasper in 2024 after VP Finance roles at Atreca and controller work at Audible Magic; he keeps a $364,000 base salary and equity eligibility.
- No new equity award was granted to Ruiz for the interim promotion, and no permanent CFO replacement was named.

## SEC filing metadata
- accession: 0001213900-26-104101
- form_type: 8-K
- ticker: JSPR
- cik: 0001788028
- company_name: Jasper Therapeutics, Inc.
- filed_at: 2026-09-28T20:44:17+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1788028/000121390026104101/0001213900-26-104101-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1788028/000121390026104101/ea0306856-8k_jasper.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-26-104101
- JSON: https://secwatch.observer/filing/0001213900-26-104101.json
- Plain text: https://secwatch.observer/filing/0001213900-26-104101.txt

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