---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-22-006561"
form_type: "8-K"
ticker: "ASYS"
cik: "0000720500"
company_name: "AMTECH SYSTEMS INC"
filed_at: "2022-04-28T23:59:59+00:00"
generated_at: "2026-06-26T03:41:08.239224+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Amtech subsidiary sells Billerica building for $21.5M, leaseback for 2 years

## Summary
- Sale price $21.5M; $500k nonrefundable deposit paid; closing expected June 21, 2022.
- BTU will lease back premises under 2-year absolute triple net lease at $1.5M/year.
- Buyer's financing contingency expired April 22, 2022, making obligations effective.

## SEC filing metadata
- accession: 0000950170-22-006561
- form_type: 8-K
- ticker: ASYS
- cik: 0000720500
- company_name: AMTECH SYSTEMS INC
- filed_at: 2022-04-28T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 1.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/720500/000095017022006561/0000950170-22-006561-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/720500/000095017022006561/asys-20220422.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-22-006561
- JSON: https://secwatch.observer/filing/0000950170-22-006561.json
- Plain text: https://secwatch.observer/filing/0000950170-22-006561.txt

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