AIMD's three largest insider shareholders as of September 29, 2026 are Carbon Nano Technology Corp Taiwan (TenPercentOwner, 948.92K shares), Inc Ainos (TenPercentOwner, 888.45K shares), Ting-Chuan Lee (Director, 807.42K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Inc Ainos | TenPercentOwner | 1,052,213 | 0 | 1,052,213 | 21.9% | 21 Apr, 2023 |
| 2 | Carbon Nano Technology Corp Taiwan | TenPercentOwner | 948,925 | 0 | 948,925 | 19.8% | 27 May, 2026 |
| 3 | Ting-Chuan Lee | Director | 808,588 | 0 | 808,588 | 16.9% | 27 May, 2026 |
| 4 | Chun-Hsien Tsai | Ceo, President, Chairman | 711,962 | 0 | 711,962 | 14.8% | 17 Apr, 2026 |
| 5 | Chun-Jung Tsai | Director | 658,987 | 0 | 658,987 | 13.7% | 27 May, 2026 |
| 6 | Hsiu-Chen Chiu | Director | 200,110 | 0 | 200,110 | 4.2% | 28 Dec, 2021 |
| 7 | Wen-Han Chang | Director | 101,644 | 0 | 101,644 | 2.1% | 26 Nov, 2025 |
| 8 | Chung-Yi Tsai | Director | 90,978 | 0 | 90,978 | 1.9% | 26 Nov, 2025 |
| 9 | Pao-Sheng Wei | Director | 90,978 | 0 | 90,978 | 1.9% | 26 Nov, 2025 |
| 10 | Hsin-Liang Christopher Lee | Cfo | 75,275 | 0 | 75,275 | 1.6% | 26 Nov, 2025 |
| 11 | Lawrence K Lin | E.V.P. Of Operations | 17,639 | 27,559 | 45,198 | 0.9% | 20 Feb, 2024 |
| 12 | Yao-Chung Chiang | Director | 98 | 11,279 | 11,377 | 0.2% | 09 Jun, 2026 |
| 13 | Hui-Lan Wu | Chief Financial Officer | 1,997 | 0 | 1,997 | 0.0% | 05 Jul, 2023 |
| 14 | Meng Lin Sung | Chief Financial Officer | 163 | 0 | 163 | 0.0% | 20 Feb, 2024 |
| 15 | Test, Inc. Ase | TenPercentOwner | 157 | 0 | 157 | 0.0% | 25 Jun, 2025 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 05 Jun, 2026 | Yao-Chung Chiang | Director | Acquired P | 3,500 | $2.05 | $7.17K | 11,279 | Indirect |
| 03 Jun, 2026 | Yao-Chung Chiang | Director | Acquired P | 2,000 | $2.13 | $4.26K | 7,779 | Indirect |
| 28 May, 2026 | Yao-Chung Chiang | Director | Acquired P | 250 | $2.30 | $575 | 5,779 | Indirect |
| 27 May, 2026 | Yao-Chung Chiang | Director | Acquired P | 2,000 | $2.00 | $4.00K | 5,529 | Indirect |
| 26 May, 2026 | Carbon Nano Technology Corp Taiwan | TenPercentOwner | Disposed S | 41,000 | $2.36 | $96.76K | 948,925 | Direct |
| 26 May, 2026 | Ting-Chuan Lee | Director | Disposed S | 109,988 | $1.90 | $208.98K | 807,417 | Direct |
| 22 May, 2026 | Chun-Jung Tsai | Director | Disposed S | 1,082 | $1.55 | $1.68K | 685,917 | Direct |
| 26 May, 2026 | Chun-Jung Tsai | Director | Disposed S | 27,718 | $1.87 | $51.83K | 658,199 | Direct |
| 21 May, 2026 | Ting-Chuan Lee | Director | Disposed S | 9,000 | $1.56 | $14.04K | 926,707 | Direct |
| 22 May, 2026 | Ting-Chuan Lee | Director | Disposed S | 9,302 | $1.57 | $14.60K | 917,405 | Direct |
| 18 May, 2026 | Yao-Chung Chiang | Director | Acquired P | 500 | $1.65 | $825 | 1,329 | Indirect |
| 19 May, 2026 | Yao-Chung Chiang | Director | Acquired P | 2,200 | $1.68 | $3.70K | 3,529 | Indirect |
| 05 May, 2026 | Yao-Chung Chiang | Director | Acquired P | 129 | $1.70 | $219 | 829 | Indirect |
| 29 Apr, 2026 | Yao-Chung Chiang | Director | Acquired P | 100 | $1.75 | $175 | 500 | Indirect |
| 30 Apr, 2026 | Yao-Chung Chiang | Director | Acquired P | 200 | $1.68 | $336 | 700 | Indirect |
| 15 Apr, 2026 | Ting-Chuan Lee | Director | Acquired A | 570,000 | $1.61 | $917.70K | 935,707 | Direct |
| 15 Apr, 2026 | Chun-Jung Tsai | Director | Acquired A | 330,000 | $1.61 | $531.30K | 686,999 | Direct |
| 15 Apr, 2026 | Chun-Hsien Tsai | Ceo, President, Chairman | Acquired A | 300,000 | $1.61 | $483.00K | 710,372 | Direct |
| 15 Apr, 2026 | Ting-Chuan Lee | Director | Acquired A | 570,000 | — | — | 570,000 | Direct |
| 15 Apr, 2026 | Chun-Jung Tsai | Director | Acquired A | 330,000 | — | — | 330,000 | Direct |