---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-184083"
form_type: "8-K"
ticker: "TCRX"
cik: "0001783328"
company_name: "TScan Therapeutics, Inc."
filed_at: "2025-08-20T23:59:59+00:00"
generated_at: "2026-05-17T11:10:35.137395+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# TScan Therapeutics appoints Leiden Dworak as Principal Accounting Officer

## Summary
- Appointment effective August 14, 2025; Dworak also serves as VP Finance since April 2022.
- Jason Amello ceases as Principal Accounting Officer but remains CFO and Principal Financial Officer.
- Dworak previously held the same PAO role from July 2023 to January 2024.
- 17 years biotech finance experience including VP Finance at AVROBIO and Director at Moderna.

## SEC filing metadata
- accession: 0001193125-25-184083
- form_type: 8-K
- ticker: TCRX
- cik: 0001783328
- company_name: TScan Therapeutics, Inc.
- filed_at: 2025-08-20T23:59:59+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/1783328/000119312525184083/0001193125-25-184083-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1783328/000119312525184083/d55649d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-184083
- JSON: https://secwatch.observer/filing/0001193125-25-184083.json
- Plain text: https://secwatch.observer/filing/0001193125-25-184083.txt

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