---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-21-019633"
form_type: "8-K"
ticker: "AMS"
cik: "0000744825"
company_name: "AMERICAN SHARED HOSPITAL SERVICES"
filed_at: "2021-08-12T23:59:59+00:00"
generated_at: "2026-06-29T14:13:05.270125+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# American Shared Hospital Services Q2 2021 revenue up 12% to $4.48M; net income ex-debt extinguishment $157K

## Summary
- Total revenue $4.476M (+12.2% YoY); operating income $352K vs loss ($570K) in Q2 2020.
- Gamma Knife revenue $2.927M (+13%); procedures up 7.4% to 376; same-center volumes +18.4%.
- Proton therapy revenue $1.549M (+10.6%) but fractions down 17.9% due to pandemic.
- Gross margin 35.9% vs 22.7% a year ago; adjusted EBITDA $1.829M vs $1.437M.
- Cash $8.437M at June 30, 2021 vs $4.325M at Dec 31, 2020; debt refinancing completed in April 2021.

## SEC filing metadata
- accession: 0001437749-21-019633
- form_type: 8-K
- ticker: AMS
- cik: 0000744825
- company_name: AMERICAN SHARED HOSPITAL SERVICES
- filed_at: 2021-08-12T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/744825/000143774921019633/0001437749-21-019633-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/744825/000143774921019633/asha20210811_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-21-019633
- JSON: https://secwatch.observer/filing/0001437749-21-019633.json
- Plain text: https://secwatch.observer/filing/0001437749-21-019633.txt

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