---
schema_version: "secwatch.filing_event.v1"
accession: "0001564590-21-053963"
form_type: "8-K"
ticker: "ADPT"
cik: "0001478320"
company_name: "Adaptive Biotechnologies Corp"
filed_at: "2021-11-03T23:59:59+00:00"
generated_at: "2026-06-28T13:52:23.114292+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Adaptive Biotechnologies Q3 revenue up 50% to $39.5M, net loss widens; appoints new principal accounting officer

## Summary
- Q3 2021 revenue $39.5M (+50% YoY); sequencing revenue $22.1M (+96%), development revenue $17.4M (+16%).
- Net loss $56.0M vs $36.7M in Q3 2020; adjusted EBITDA loss $41.1M vs $28.4M.
- Full-year 2021 revenue guidance reaffirmed at $148-155M, ~54% growth at midpoint.
- clonoSEQ sequencing volume grew 47% YoY; launched enhanced assay for CLL including IGHV mutation status.
- Kyle Piskel appointed principal accounting officer; Chad Cohen remains CFO and principal financial officer.

## SEC filing metadata
- accession: 0001564590-21-053963
- form_type: 8-K
- ticker: ADPT
- cik: 0001478320
- company_name: Adaptive Biotechnologies Corp
- filed_at: 2021-11-03T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 2.02, 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1478320/000156459021053963/0001564590-21-053963-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1478320/000156459021053963/adpt-8k_20211028.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001564590-21-053963
- JSON: https://secwatch.observer/filing/0001564590-21-053963.json
- Plain text: https://secwatch.observer/filing/0001564590-21-053963.txt

## Key facts
- Executive change
  Kyle Piskel was appointed as principal accounting officer at Adaptive Biotechnologies Corp.
  - Action: designated
  - Role: principal accounting officer
  source text: On October 28, 2021, the Board of Directors of the Company designated Kyle Piskel as the Company’s principal accounting officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1478320/000156459021053963/0001564590-21-053963-index.htm

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