---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-277043"
form_type: "8-K"
ticker: "EQ"
cik: "0001746466"
company_name: "Equillium, Inc."
filed_at: "2024-12-12T23:59:59+00:00"
generated_at: "2026-05-29T04:10:47.461733+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Equillium director Yu Xu resigns; Peter Colabuono appointed to board

## Summary
- Yu (Katherine) Xu, Ph.D., resigned from Equillium board and audit committee effective Dec 10, 2024; no disagreement cited.
- Peter Colabuono appointed Class II director, term expiring at 2026 annual meeting, filling Xu's vacancy.
- Colabuono receives $42,000 annual cash retainer, option for 40,000 shares vesting monthly over 3 years.
- Further annual automatic option grants of 20,000 shares vesting over 12 months; change-in-control acceleration.
- Barbara Troupin, M.D., appointed to audit committee; committee now Demski (chair), Manian, Troupin.

## SEC filing metadata
- accession: 0001193125-24-277043
- form_type: 8-K
- ticker: EQ
- cik: 0001746466
- company_name: Equillium, Inc.
- filed_at: 2024-12-12T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1746466/000119312524277043/0001193125-24-277043-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1746466/000119312524277043/d838089d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-277043
- JSON: https://secwatch.observer/filing/0001193125-24-277043.json
- Plain text: https://secwatch.observer/filing/0001193125-24-277043.txt

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