---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-21-304031"
form_type: "8-K"
ticker: "VICR"
cik: "0000751978"
company_name: "VICOR CORP"
filed_at: "2021-10-21T23:59:59+00:00"
generated_at: "2026-06-28T19:23:53.860324+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Vicor Q3 revenue $84.9M, down 11% sequentially; EPS $0.29; backlog $296M

## Summary
- Revenue $84.9M (+8.7% YoY, -11.0% QoQ); gross margin 50.4% vs 52.3% Q2.
- Net income $13.3M ($0.29 diluted EPS) vs $5.8M ($0.13) YoY and $19.4M ($0.43) Q2.
- CEO cites semiconductor shortages; expects Q4 revenue step-up on improved component availability.
- Book-to-bill ratio 2.0; backlog $296M vs $140M a year ago; factory expansion on track.
- First OEM License Agreement executed with major OEM for Vicor IP.

## SEC filing metadata
- accession: 0001193125-21-304031
- form_type: 8-K
- ticker: VICR
- cik: 0000751978
- company_name: VICOR CORP
- filed_at: 2021-10-21T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/751978/000119312521304031/0001193125-21-304031-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/751978/000119312521304031/d191307d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-21-304031
- JSON: https://secwatch.observer/filing/0001193125-21-304031.json
- Plain text: https://secwatch.observer/filing/0001193125-21-304031.txt

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