---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-21-003476"
form_type: "8-K"
ticker: "LFST"
cik: "0001845257"
company_name: "LifeStance Health Group, Inc."
filed_at: "2021-11-08T23:59:59+00:00"
generated_at: "2026-06-28T11:43:35.585144+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# LifeStance Q3 revenue $173.8M (+70% YoY); net loss $120.5M on stock comp; FY revenue guided to lower end of $668-678M

## Summary
- Revenue $173.8M, up 70% YoY; Center Margin $52.1M (29.9% of revenue), up 57%.
- Net loss $120.5M vs $3.3M loss a year ago, primarily driven by $120.7M stock/unit-based compensation.
- Adjusted EBITDA $10.7M (6.2% of revenue), down 29% YoY from $15.0M.
- Clinicians grew 72% to 4,375; added 400 net clinicians in Q3; retention stabilized ~80% annualized.
- FY 2021 revenue expected toward lower end of $668-678M range; Center Margin and Adjusted EBITDA guidance unchanged.

## SEC filing metadata
- accession: 0000950170-21-003476
- form_type: 8-K
- ticker: LFST
- cik: 0001845257
- company_name: LifeStance Health Group, Inc.
- filed_at: 2021-11-08T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1845257/000095017021003476/0000950170-21-003476-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1845257/000095017021003476/lfst-20211108.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-21-003476
- JSON: https://secwatch.observer/filing/0000950170-21-003476.json
- Plain text: https://secwatch.observer/filing/0000950170-21-003476.txt

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