---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-21-026072"
form_type: "8-K"
ticker: "AMS"
cik: "0000744825"
company_name: "AMERICAN SHARED HOSPITAL SERVICES"
filed_at: "2021-11-10T23:59:59+00:00"
generated_at: "2026-06-28T10:19:56.751252+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# American Shared Hospital Services Q3 net income $33K vs net loss $209K a year ago; revenue down 12.2%

## Summary
- Revenue $4.1M (-12.2% YoY); Gamma Knife revenue $2.8M (-5.9%), Proton therapy $1.3M (-23.4%).
- Operating income $186K vs operating loss $251K in Q3 2020; positive swing of $437K.
- Net income $33K ($0.01 per diluted share) vs net loss $209K ($0.03 loss per share).
- Proton fractions down 40.4% due to COVID and equipment repair downtime.
- Gamma Knife same-center volumes up 11.6%; two contract expirations offset by GKC Ecuador acquisition.

## SEC filing metadata
- accession: 0001437749-21-026072
- form_type: 8-K
- ticker: AMS
- cik: 0000744825
- company_name: AMERICAN SHARED HOSPITAL SERVICES
- filed_at: 2021-11-10T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/744825/000143774921026072/0001437749-21-026072-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/744825/000143774921026072/asha20211109_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-21-026072
- JSON: https://secwatch.observer/filing/0001437749-21-026072.json
- Plain text: https://secwatch.observer/filing/0001437749-21-026072.txt

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