Time on boards
- Boards served
- 2
- Current seats
- 2
- Board service
- 3 years
- Director since
- 2023
3 years of board service in total across 2 boards, counting each seat separately. Longest: ACM Research Inc., 3 years.
ACM Research Inc.
Director
AXT Inc
Director
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 |
|---|---|---|---|---|---|
| Mar 11, 2026 | ACM Research Inc. | Option exercise | +15,000 | $1.00 | $15,000 |
| Mar 11, 2026 | ACM Research Inc. | Open-market sale | −11,623 | $47.81 | $555,696 |
| Mar 11, 2026 | ACM Research Inc. | Open-market sale | −3,377 | $48.25 | $162,940 |
| Mar 10, 2026 | ACM Research Inc. | Option exercise | +45,000 | $1.00 | $45,000 |
| Mar 10, 2026 | ACM Research Inc. | Open-market sale | −32,216 | $47.06 | $1,516,085 |
| Mar 10, 2026 | ACM Research Inc. | Open-market sale | −12,784 | $48.19 | $616,061 |
| Sep 17, 2025 | ACM Research Inc. | Option exercise | +15,000 | $1.00 | $15,000 |
| Sep 17, 2025 | ACM Research Inc. | Open-market sale | −15,000 | $33.00 | $495,000 |
| Jul 15, 2025 | ACM Research Inc. | Option exercise | +15,000 | $1.00 | $15,000 |
| Jul 15, 2025 | ACM Research Inc. | Open-market sale | −15,000 | $30.00 | $450,000 |
| Feb 28, 2024 | ACM Research Inc. | Option exercise | +12,500 | $5.60 | $70,000 |
| Feb 28, 2024 | ACM Research Inc. | Open-market sale | −12,500 | $25.20 | $315,000 |
| Dec 26, 2023 | ACM Research Inc. | Option exercise | +10,000 | $5.60 | $56,000 |
| Dec 26, 2023 | ACM Research Inc. | Open-market sale | −10,000 | $20.00 | $200,000 |
| Nov 20, 2023 | ACM Research Inc. | Option exercise | +15,000 | $7.36 | $110,400 |
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