---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-015646"
form_type: "8-K"
ticker: "TYRA"
cik: "0001863127"
company_name: "Tyra Biosciences, Inc."
filed_at: "2025-01-29T23:59:59+00:00"
generated_at: "2026-05-27T07:24:37.998703+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Tyra Biosciences appoints Adele M. Gulfo to board; Nina Kjellson resigns

## Summary
- Nina Kjellson resigned from board and Compensation Committee effective Jan 29, 2025, not due to disagreement.
- Adele M. Gulfo appointed as Class I director and to Compensation Committee effective same date.
- Gulfo, 62, former CEO Sumitomo Pharma America Biopharma Commercial Unit (Jul 2023-Oct 2024) and prior roles at Sumitovant, Roivant, Mylan, Pfizer, AstraZeneca.
- Gulfo received options for 37,200 shares vesting over 36 months and cash compensation per non-employee director program.
- Board determined Gulfo independent under Nasdaq rules; no material transactions with company.

## SEC filing metadata
- accession: 0001193125-25-015646
- form_type: 8-K
- ticker: TYRA
- cik: 0001863127
- company_name: Tyra Biosciences, Inc.
- filed_at: 2025-01-29T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1863127/000119312525015646/0001193125-25-015646-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1863127/000119312525015646/d922700d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-015646
- JSON: https://secwatch.observer/filing/0001193125-25-015646.json
- Plain text: https://secwatch.observer/filing/0001193125-25-015646.txt

## Key facts
- Executive change
  Adele M. Gulfo was appointed as Director at Tyra Biosciences, Inc..
  - Action: appointed
  - Role: Director
  source text: the Board appointed Adele M. Gulfo as a director of the Board, filling the Class I vacancy on the Board resulting from Ms. Kjellson’s resignation.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1863127/000119312525015646/0001193125-25-015646-index.htm
- Executive change
  Nina Kjellson resigned as Director at Tyra Biosciences, Inc..
  - Action: resigned
  - Role: Director
  source text: Nina Kjellson resigned from the Board and the Compensation Committee of the Board effective as of January 29, 2025
  evidence_url: https://www.sec.gov/Archives/edgar/data/1863127/000119312525015646/0001193125-25-015646-index.htm

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