Time on boards
- Boards served
- 2
- Current seats
- 2
- Board service
- 6 years
- Director since
- 2023
6 years of board service in total across 2 boards, counting each seat separately. Longest: SI-BONE Inc., 3 years.
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
SI-BONE Inc. June 25, 202484.1%
-
Accuray Incorporated November 9, 202385.0%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Jun 4, 2026 | SI-BONE Inc. | Grant or award | +10,957 | — | — |
| Mar 12, 2026 | SI-BONE Inc. | Open-market sale | −4,100 | $13.83 | $56,703 |
| Nov 21, 2025 | Accuray Incorporated | Option exercise | +56,603 | — | — |
| Jun 5, 2025 | SI-BONE Inc. | Grant or award | +8,675 | — | — |
| Jun 26, 2024 | SI-BONE Inc. | Grant or award | +8,791 | — | — |
| Mar 13, 2024 | SI-BONE Inc. | Open-market sale | −2,500 | $16.22 | $40,550 |
| Nov 30, 2023 | Accuray Incorporated | Grant or award | +56,603 | — | — |
| Jun 9, 2023 | SI-BONE Inc. | Grant or award | +4,866 | — | — |
Questions about Mika Nishimura
What boards is Mika Nishimura on?
Mika Nishimura sits on the boards of Accuray Incorporated and SI-BONE Inc.
How long has Mika Nishimura served on boards?
Our records show at least 6 years of board service across 2 boards, the earliest from 2023.
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