The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 5, 2026 | chiang yao-chung | Director | Buy(P) | 4K | $2.05 | $7K |
| Jun 3, 2026 | chiang yao-chung | Director | Buy(P) | 2K | $2.13 | $4K |
| May 28, 2026 | chiang yao-chung | Director | Buy(P) | 250 | $2.30 | $575 |
| May 27, 2026 | chiang yao-chung | Director | Buy(P) | 2K | $2.00 | $4K |
| May 26, 2026 | Tsai Chun-Jung | Director | Sell(S) | 28K | $1.87 | $52K |
| May 26, 2026 | Taiwan Carbon Nano Technology Corp | 10% Owner | Sell(S) | 41K | $2.36 | $97K |
| May 26, 2026 | lee ting-chuan | Director | Sell(S) | 110K | $1.90 | $209K |
| May 22, 2026 | lee ting-chuan | Director | Sell(S) | 9K | $1.57 | $15K |
| May 22, 2026 | Tsai Chun-Jung | Director | Sell(S) | 1K | $1.55 | $2K |
| May 21, 2026 | lee ting-chuan | Director | Sell(S) | 9K | $1.56 | $14K |
| May 19, 2026 | chiang yao-chung | Director | Buy(P) | 2K | $1.68 | $4K |
| May 18, 2026 | chiang yao-chung | Director | Buy(P) | 500 | $1.65 | $825 |
| May 5, 2026 | chiang yao-chung | Director | Buy(P) | 129 | $1.70 | $219 |
| Apr 30, 2026 | chiang yao-chung | Director | Buy(P) | 200 | $1.68 | $336 |
| Apr 29, 2026 | chiang yao-chung | Director | Buy(P) | 100 | $1.75 | $175 |
| Apr 15, 2026 | lee ting-chuan | Director | Grant(A) | 570K | — | — |
| Apr 15, 2026 | lee ting-chuan | Director | Conversion(C) | 570K | — | — |
| Apr 15, 2026 | lee ting-chuan | Director | Grant(A) | 570K | $1.61 | $918K |
| Apr 15, 2026 | tsai chun-hsien | CEO, PRESIDENT, CHAIRMAN, Director | Grant(A) | 300K | $1.61 | $483K |
| Apr 15, 2026 | tsai chun-hsien | CEO, PRESIDENT, CHAIRMAN, Director | Grant(A) | 300K | — | — |
| Apr 15, 2026 | tsai chun-hsien | CEO, PRESIDENT, CHAIRMAN, Director | Conversion(C) | 300K | — | — |
| Apr 15, 2026 | Tsai Chun-Jung | Director | Grant(A) | 330K | $1.61 | $531K |
| Apr 15, 2026 | Tsai Chun-Jung | Director | Grant(A) | 330K | — | — |
| Apr 15, 2026 | Tsai Chun-Jung | Director | Conversion(C) | 330K | — | — |
| Apr 12, 2026 | ASE Test, Inc. | 10% Owner | Buy(P) | 6K | — | — |
| Jan 28, 2026 | Taiwan Carbon Nano Technology Corp | 10% Owner | Sell(S) | 46K | $2.17 | $100K |
| Jan 9, 2026 | Taiwan Carbon Nano Technology Corp | 10% Owner | Sell(S) | 431 | $1.86 | $802 |
| Jan 8, 2026 | Taiwan Carbon Nano Technology Corp | 10% Owner | Sell(S) | 850 | $1.80 | $2K |
| Nov 25, 2025 | lee ting-chuan | Director | Grant(A) | 80K | $2.10 | $168K |
| Nov 25, 2025 | lee ting-chuan | Director | Conversion(C) | 80K | — | — |
| Nov 25, 2025 | lee ting-chuan | Director | Grant(A) | 80K | — | — |
| Nov 25, 2025 | tsai chung-yi | Director | Grant(A) | 50K | $2.10 | $105K |
| Nov 25, 2025 | tsai chung-yi | Director | Conversion(C) | 50K | — | — |
| Nov 25, 2025 | tsai chung-yi | Director | Grant(A) | 50K | — | — |
| Nov 25, 2025 | Lee Hsin-Liang Christopher | CFO | Grant(A) | 20K | $2.10 | $42K |
| Nov 25, 2025 | Lee Hsin-Liang Christopher | CFO | Grant(A) | 20K | — | — |
| Nov 25, 2025 | Lee Hsin-Liang Christopher | CFO | Conversion(C) | 20K | — | — |
| Nov 25, 2025 | chang wen-han | Director | Grant(A) | 50K | $2.10 | $105K |
| Nov 25, 2025 | chang wen-han | Director | Conversion(C) | 50K | — | — |
| Nov 25, 2025 | chang wen-han | Director | Grant(A) | 50K | — | — |
| Nov 25, 2025 | tsai chun-hsien | CEO, PRESIDENT, CHAIRMAN, Director | Grant(A) | 80K | $2.10 | $168K |
| Nov 25, 2025 | tsai chun-hsien | CEO, PRESIDENT, CHAIRMAN, Director | Grant(A) | 80K | — | — |
| Nov 25, 2025 | tsai chun-hsien | CEO, PRESIDENT, CHAIRMAN, Director | Conversion(C) | 80K | — | — |
| Nov 25, 2025 | chiang yao-chung | Director | Grant(A) | 50K | $2.10 | $105K |
| Nov 25, 2025 | chiang yao-chung | Director | Grant(A) | 50K | — | — |
| Nov 25, 2025 | chiang yao-chung | Director | Conversion(C) | 50K | — | — |
| Nov 25, 2025 | Tsai Chun-Jung | Director | Grant(A) | 80K | $2.10 | $168K |
| Nov 25, 2025 | Tsai Chun-Jung | Director | Grant(A) | 80K | — | — |
| Nov 25, 2025 | Tsai Chun-Jung | Director | Conversion(C) | 80K | — | — |
| Nov 25, 2025 | Wei Pao-Sheng | Director | Grant(A) | 50K | $2.10 | $105K |
| Nov 25, 2025 | Wei Pao-Sheng | Director | Conversion(C) | 50K | — | — |
| Nov 25, 2025 | Wei Pao-Sheng | Director | Grant(A) | 50K | — | — |
| Oct 6, 2025 | Taiwan Carbon Nano Technology Corp | 10% Owner | Sell(S) | 7K | $3.59 | $25K |
| Oct 2, 2025 | Taiwan Carbon Nano Technology Corp | 10% Owner | Sell(S) | 2K | $3.59 | $7K |
| Oct 1, 2025 | Taiwan Carbon Nano Technology Corp | 10% Owner | Sell(S) | 2K | $3.46 | $6K |
| Sep 30, 2025 | Taiwan Carbon Nano Technology Corp | 10% Owner | Sell(S) | 1K | $3.52 | $4K |
| Aug 6, 2025 | Taiwan Carbon Nano Technology Corp | 10% Owner | Buy(S) | 20K | $2.95 | $59K |
| Aug 5, 2025 | Taiwan Carbon Nano Technology Corp | 10% Owner | Buy(S) | 11K | $2.44 | $27K |
| Jul 18, 2025 | Taiwan Carbon Nano Technology Corp | 10% Owner | Buy(S) | 7K | $2.81 | $20K |
| Jul 17, 2025 | Taiwan Carbon Nano Technology Corp | 10% Owner | Buy(S) | 7K | $2.80 | $20K |
| Jun 27, 2025 | Tsai Chun-Jung | Director | Sell(S) | 10K | $0.50 | $5K |
| Jun 25, 2025 | Tsai Chun-Jung | Director | Sell(S) | 7K | $0.50 | $4K |
| Jun 25, 2025 | lee ting-chuan | Director | Sell(S) | 3K | $0.51 | $1K |
| Jun 23, 2025 | ASE Test, Inc. | 10% Owner | Buy(P) | 29K | — | — |
| Jun 23, 2025 | Tsai Chun-Jung | Director | Sell(S) | 10K | $0.50 | $5K |
| Jun 23, 2025 | Taiwan Carbon Nano Technology Corp | 10% Owner | Buy(S) | 29K | — | — |
| Jun 19, 2025 | Tsai Chun-Jung | Director | Sell(S) | 11K | $0.55 | $6K |
| Jun 18, 2025 | Tsai Chun-Jung | Director | Sell(S) | 5K | $0.52 | $3K |
| Apr 8, 2025 | Tsai Chun-Jung | Director | Grant(A) | 900K | $0.48 | $432K |
| Apr 8, 2025 | Tsai Chun-Jung | Director | Conversion(C) | 900K | — | — |
| Apr 8, 2025 | Tsai Chun-Jung | Director | Grant(A) | 900K | — | — |
| Apr 8, 2025 | tsai chun-hsien | CEO, PRESIDENT, CHAIRMAN, Director | Grant(A) | 900K | $0.48 | $432K |
| Apr 8, 2025 | tsai chun-hsien | CEO, PRESIDENT, CHAIRMAN, Director | Conversion(C) | 900K | — | — |
| Apr 8, 2025 | tsai chun-hsien | CEO, PRESIDENT, CHAIRMAN, Director | Grant(A) | 900K | — | — |
| Apr 8, 2025 | lee ting-chuan | Director | Grant(A) | 900K | $0.48 | $432K |
| Apr 8, 2025 | lee ting-chuan | Director | Conversion(C) | 900K | — | — |
| Apr 8, 2025 | lee ting-chuan | Director | Grant(A) | 900K | — | — |
| Mar 10, 2025 | ASE Test, Inc. | 10% Owner | Buy(P) | 499K | — | — |
| Mar 10, 2025 | Lee Hsin-Liang Christopher | CFO | Grant(A) | 250K | $0.46 | $115K |
| Mar 10, 2025 | Lee Hsin-Liang Christopher | CFO | Grant(A) | 250K | — | — |
| Mar 10, 2025 | Lee Hsin-Liang Christopher | CFO | Conversion(C) | 250K | — | — |
| Mar 10, 2025 | chang wen-han | Director | Grant(A) | 150K | $0.46 | $69K |
| Mar 10, 2025 | chang wen-han | Director | Conversion(C) | 150K | — | — |
| Mar 10, 2025 | chang wen-han | Director | Grant(A) | 150K | — | — |
| Mar 10, 2025 | chiang yao-chung | Director | Grant(A) | 150K | $0.46 | $69K |
| Mar 10, 2025 | chiang yao-chung | Director | Conversion(C) | 150K | — | — |
| Mar 10, 2025 | chiang yao-chung | Director | Grant(A) | 150K | — | — |
| Mar 10, 2025 | lee ting-chuan | Director | Grant(A) | 200K | $0.46 | $92K |
| Mar 10, 2025 | lee ting-chuan | Director | Grant(A) | 200K | — | — |
| Mar 10, 2025 | lee ting-chuan | Director | Conversion(C) | 200K | — | — |
| Mar 10, 2025 | tsai chun-hsien | CEO, PRESIDENT, CHAIRMAN, Director | Grant(A) | 200K | $0.46 | $92K |
| Mar 10, 2025 | tsai chun-hsien | CEO, PRESIDENT, CHAIRMAN, Director | Conversion(C) | 200K | — | — |
| Mar 10, 2025 | tsai chun-hsien | CEO, PRESIDENT, CHAIRMAN, Director | Grant(A) | 200K | — | — |
| Mar 10, 2025 | Tsai Chun-Jung | Director | Grant(A) | 200K | $0.46 | $92K |
| Mar 10, 2025 | Tsai Chun-Jung | Director | Grant(A) | 200K | — | — |
| Mar 10, 2025 | Tsai Chun-Jung | Director | Conversion(C) | 200K | — | — |
| Mar 10, 2025 | tsai chung-yi | Director | Grant(A) | 150K | $0.46 | $69K |
| Mar 10, 2025 | tsai chung-yi | Director | Conversion(C) | 150K | — | — |
| Mar 10, 2025 | tsai chung-yi | Director | Grant(A) | 150K | — | — |
| Mar 10, 2025 | Wei Pao-Sheng | Director | Grant(A) | 150K | $0.46 | $69K |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Coverage: Form 4 filings indexed 2021-03-29 → 2026-07-14. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).