---
schema_version: "secwatch.filing_event.v1"
accession: "0001564590-21-045412"
form_type: "8-K"
ticker: "ARAY"
cik: "0001138723"
company_name: "ACCURAY INC"
filed_at: "2021-08-23T23:59:59+00:00"
generated_at: "2026-06-29T08:19:29.364992+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Accuray appoints Mika Nishimura to Board of Directors effective August 17, 2021

## Summary
- Mika Nishimura, a medical device executive with 25+ years experience, joins Accuray Board as Class II director.
- Cash compensation: $52,500 annual retainer; initial RSU grant of $150K prorated; annual RSU grant of $150K.
- Nishimura currently serves on boards of SI-BONE, MobileODT, and as advisor to Tristel plc.
- Board expands to nine members; Nishimura will stand for re-election at 2023 Annual Meeting.

## SEC filing metadata
- accession: 0001564590-21-045412
- form_type: 8-K
- ticker: ARAY
- cik: 0001138723
- company_name: ACCURAY INC
- filed_at: 2021-08-23T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1138723/000156459021045412/0001564590-21-045412-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1138723/000156459021045412/aray-8k_20210817.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001564590-21-045412
- JSON: https://secwatch.observer/filing/0001564590-21-045412.json
- Plain text: https://secwatch.observer/filing/0001564590-21-045412.txt

## Key facts
- Executive change
  Mika Nishimura was appointed as Director at ACCURAY INC.
  - Action: appointed
  - Role: Director
  source text: Effective August 17, 2021, the Board of Directors (the “Board”) of Accuray Incorporated (“Company”) appointed Ms. Mika Nishimura as a Class II member of the Company’s Board in order to fill a vacancy on the Board.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1138723/000156459021045412/0001564590-21-045412-index.htm

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