---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-407817"
form_type: "8-K"
ticker: "BCAB"
cik: "0001826892"
company_name: "BioAtla, Inc."
filed_at: "2026-09-29T21:16:14+00:00"
generated_at: "2026-10-12T13:53:41.157111+00:00"
event_type: "leadership"
sentiment: "negative"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# BioAtla CMO Eric Sievers resigns; board reinstates CEO/CFO retention bonuses tied to capital-raising milestones

## Summary
- Dr. Eric Sievers resigned as Chief Medical Officer on Sept 25, 2026 to pursue outside interests; he continues as a consultant through June 30, 2027.
- Sievers' consulting deal pays a one-time $159,000 contingent on capital-raising milestones by Dec 31, 2026, then an hourly rate from Jan 1 to June 30, 2027.
- CFO Christian Vasquez retention bonus reinstated at $148,888 target (40% of base salary) for Milestone #2 by Dec 31, 2026; 80-120% sliding scale, payable by Jan 31, 2027.
- CEO Jay Short's retention bonus of $440,892 (60% of base) requires 100% milestone achievement by Dec 31, 2026 with no sliding scale; payable by Jan 30, 2027.
- New performance bonuses approved Sept 24: $220,000 target for Short, $75,000 for Vasquez, tied to milestones by March 31, 2027 and payable by April 30, 2027.

## SEC filing metadata
- accession: 0001193125-26-407817
- form_type: 8-K
- ticker: BCAB
- cik: 0001826892
- company_name: BioAtla, Inc.
- filed_at: 2026-09-29T21:16:14+00:00
- event_type: leadership
- sentiment: negative
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1826892/000119312526407817/0001193125-26-407817-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1826892/000119312526407817/bcab-20260923.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-407817
- JSON: https://secwatch.observer/filing/0001193125-26-407817.json
- Plain text: https://secwatch.observer/filing/0001193125-26-407817.txt

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