---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-386511"
form_type: "8-K"
ticker: "RLYB"
cik: "0001739410"
company_name: "Rallybio Corp"
filed_at: "2026-09-09T20:30:24+00:00"
generated_at: "2026-09-09T20:31:07.978755+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# Rallybio CFO Lieber goes part-time Sept 15, $420k salary, no bonus, until Avenzo merger closes

## Summary
- CFO Jonathan Lieber transitions to part-time effective Sept 15, 2026; retains CFO and Principal Financial Officer roles.
- Base salary set at $420,000 annualized; no annual bonus for 2026 or any later year while employed.
- Employment terminates upon closing of pending merger with Avenzo Therapeutics (agreement dated May 31, 2026).
- Severance per existing employment agreement; equity awards remain eligible to vest per merger terms.
- Lieber may engage in other business activities while part-time, subject to no conflicts.

## SEC filing metadata
- accession: 0001193125-26-386511
- form_type: 8-K
- ticker: RLYB
- cik: 0001739410
- company_name: Rallybio Corp
- filed_at: 2026-09-09T20:30:24+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1739410/000119312526386511/0001193125-26-386511-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1739410/000119312526386511/d96849d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-386511
- JSON: https://secwatch.observer/filing/0001193125-26-386511.json
- Plain text: https://secwatch.observer/filing/0001193125-26-386511.txt

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