---
schema_version: "secwatch.filing_event.v1"
accession: "0000720500-26-000008"
form_type: "8-K"
ticker: "ASYS"
cik: "0000720500"
company_name: "AMTECH SYSTEMS INC"
filed_at: "2026-06-03T20:30:40+00:00"
generated_at: "2026-06-03T20:57:06.814929+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Amtech Systems closes $60M oversubscribed public offering of 2.93M shares at $20.50

## Summary
- Oversubscribed offering: 2,926,829 shares at $20.50/share, gross proceeds ~$60M.
- Proceeds to accelerate semiconductor packaging, wafer substrate fabrication, M&A, and working capital.
- Titan Partners sole bookrunner; 60-day lock-up for company and insiders.
- Offering closed June 3, 2026.

## SEC filing metadata
- accession: 0000720500-26-000008
- form_type: 8-K
- ticker: ASYS
- cik: 0000720500
- company_name: AMTECH SYSTEMS INC
- filed_at: 2026-06-03T20:30:40+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 1.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/720500/000072050026000008/0000720500-26-000008-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/720500/000072050026000008/asys-20260601.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000720500-26-000008
- JSON: https://secwatch.observer/filing/0000720500-26-000008.json
- Plain text: https://secwatch.observer/filing/0000720500-26-000008.txt

## Key facts
- Material Agreements
  AMTECH SYSTEMS INC entered into Underwriting Agreement with Titan Partners Group LLC, a division of American Capital Partners, LLC valued at aggregate gross proceeds of approximately $60 million (effective 2026-06-01).
  - Action: entry
  - Agreement: underwriting
  - Counterparty: Titan Partners Group LLC, a division of American Capital Partners, LLC
  - Value: aggregate gross proceeds of approximately $60 million
  - Effective: 2026-06-01
  source text: On June 1, 2026, Amtech Systems, Inc. (the “Company”) entered into an underwriting agreement (the “Underwriting Agreement”) with Titan Partners Group LLC, a division of American Capital Partners, LLC (the “Underwriter”), pursuant to which the Company agreed to issue and sell in an underwritten public offering (the “Offering”) an aggregate of 2,926,829 shares of its common stock, par value $0.01 per share (“Common Stock”), at a price to the public of $20.50 per share for aggregate gross proceeds of approximately $60 million, less underwriting discounts and commissions and offering expenses.
  evidence_url: https://www.sec.gov/Archives/edgar/data/720500/000072050026000008/0000720500-26-000008-index.htm

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