---
schema_version: "secwatch.filing_event.v1"
accession: "0001789769-26-000024"
form_type: "8-K"
ticker: "TIL"
cik: "0001789769"
company_name: "Instil Bio, Inc."
filed_at: "2026-04-03T23:59:59+00:00"
generated_at: "2026-05-15T07:38:46.851336+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Instil Bio replaces Deloitte with RSM as independent auditor for FY 2026

## Summary
- Dismissed Deloitte & Touche LLP effective April 1, 2026; appointed RSM US LLP for fiscal year ending Dec 31, 2026.
- Deloitte's reports for 2025 and 2024 were unqualified; no disagreements or reportable events.
- No prior consultations with RSM on accounting principles or audit opinions.

## SEC filing metadata
- accession: 0001789769-26-000024
- form_type: 8-K
- ticker: TIL
- cik: 0001789769
- company_name: Instil Bio, Inc.
- filed_at: 2026-04-03T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1789769/000178976926000024/0001789769-26-000024-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1789769/000178976926000024/til-20260401.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001789769-26-000024
- JSON: https://secwatch.observer/filing/0001789769-26-000024.json
- Plain text: https://secwatch.observer/filing/0001789769-26-000024.txt

## Source-grounded claims
- claim_id: 203e7983c5264cf818060ad25e6a271e52e521b0
  claim: Instil Bio, Inc. dismissed Deloitte & Touche LLP as its auditor.
  evidence_excerpt: (the “Company”) approved the appointment of RSM US LLP (“RSM”) as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1789769/000178976926000024/0001789769-26-000024-index.htm
- claim_id: 3303f7f0adc3836ec3dd5e751076e031bfae40dc
  claim: Instil Bio, Inc. engaged RSM US LLP as its auditor.
  evidence_excerpt: (the “Company”) approved the appointment of RSM US LLP (“RSM”) as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1789769/000178976926000024/0001789769-26-000024-index.htm

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