Sumitaka Yamamoto
Chairman, CEO & President at Heartcore Enterprises Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 3 years
- Director since
- 2023
3 years of board service in total across 1 board, counting each seat separately. Longest: Heartcore Enterprises Inc., 3 years.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
Heartcore Enterprises Inc. September 25, 2026100.0%
-
Heartcore Enterprises Inc. September 29, 2023100.0%
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 |
|---|---|---|---|---|---|
| Oct 1, 2024 | Heartcore Enterprises Inc. | Grant or award | +45,938 | — | — |
| Nov 15, 2023 | Heartcore Enterprises Inc. | Open-market purchase | +10,012 | $0.51 | $5,106 |
| Jul 3, 2023 | Heartcore Enterprises Inc. | Open-market sale | −2,414 | $1.43 | $3,452 |
| Jun 30, 2023 | Heartcore Enterprises Inc. | Open-market sale | −17,340 | $1.46 | $25,316 |
| Jun 30, 2023 | Heartcore Enterprises Inc. | Open-market sale | −2,588 | $1.44 | $3,727 |
| Jun 29, 2023 | Heartcore Enterprises Inc. | Open-market sale | −17,868 | $1.57 | $28,053 |
| Jun 27, 2023 | Heartcore Enterprises Inc. | Open-market sale | −7,333 | $1.60 | $11,733 |
| Jun 26, 2023 | Heartcore Enterprises Inc. | Open-market sale | −37,970 | $1.61 | $61,132 |
| Jun 23, 2023 | Heartcore Enterprises Inc. | Open-market sale | −7,900 | $1.61 | $12,719 |
| Jun 22, 2023 | Heartcore Enterprises Inc. | Open-market sale | −14,913 | $1.61 | $24,010 |
| Jun 21, 2023 | Heartcore Enterprises Inc. | Open-market sale | −13,745 | $1.57 | $21,580 |
| Jun 20, 2023 | Heartcore Enterprises Inc. | Open-market sale | −10,461 | $1.50 | $15,692 |
| Jun 16, 2023 | Heartcore Enterprises Inc. | Open-market sale | −8,137 | $1.48 | $12,043 |
| Jun 15, 2023 | Heartcore Enterprises Inc. | Open-market sale | −7,110 | $1.47 | $10,452 |
| Jun 14, 2023 | Heartcore Enterprises Inc. | Open-market sale | −13,545 | $1.49 | $20,182 |
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