Quick Takeaways
- AIMD - Ainos, Inc. has 16 insiders with reported activity on this page.
- Net insider value flow over the last year: -$81,256.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
Insider Transactions Reported by 16 Insiders of Ainos, Inc.
- Symbol
- AIMD, AIMDW on Nasdaq
- Location
- Houston, TX
What Changed
- Buy value: $86,250; sell value: $167,506.
- Net share flow: -73,593.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Official SEC Source
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$81,256.
Buys
$86,250
Shares: 31,191
Insiders: 1
Sells
$167,507
Shares: 104,784
Insiders: 3
Net
-$81,256
Shares: -73,593
Insiders: -2
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 46,431 | $0 | $100,608 | -$100,608 |
| 3-6 | 0 | 850 | $0 | $1,534 | -$1,534 |
| 6-9 | 31,191 | 11,706 | $86,250 | $41,725 | +$44,525 |
| 9-12 | 0 | 45,797 | $0 | $23,639 | -$23,639 |
Ainos, Inc. executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| AINOS INC | 10%+ Owner | $7,368,961 | Mixed | 19 Apr 2023 | ||
| Stephen T. Chen | Former Director & Officer | $4,704,495 | Mixed | 27 Jun 2022 | ||
| Taiwan Carbon Nano Technology Corp | 10%+ Owner | $2,147,840 | -$57,617 | -2.6% | Filing P/S | 28 Jan 2026 |
| Hsiu-Chen Chiu | Director | $1,800,900 | Mixed | 22 Dec 2021 | ||
| Chun-Hsien Tsai | CEO, PRESIDENT, CHAIRMAN, Director | $861,781 | Mixed | 25 Nov 2025 | ||
| Ting-Chuan Lee | Director | $767,984 | -$1,476 | -0.19% | Mixed | 25 Nov 2025 |
| Chun-Jung Tsai | Director | $749,697 | -$22,163 | -2.9% | Mixed | 25 Nov 2025 |
| Wen-Han Chang | Director | $213,246 | Mixed | 25 Nov 2025 | ||
| Yao-Chung Chiang | Director | $191,688 | Mixed | 25 Nov 2025 | ||
| Pao-Sheng Wei | Director | $190,848 | Mixed | 25 Nov 2025 | ||
| Chung-Yi Tsai | Director | $190,848 | Mixed | 25 Nov 2025 | ||
| Hui-Lan Wu | Chief Financial Officer | $158,858 | Mixed | 30 Jun 2023 | ||
| Hsin-Liang Christopher Lee | Cfo | $158,077 | Mixed | 25 Nov 2025 | ||
| Meng Lin Sung | Chief Financial Officer | $56,701 | Mixed | 16 Feb 2024 | ||
| Lawrence K. Lin | E.V.P. Of Operations | $43,734 | Mixed | 16 Feb 2024 | ||
| ASE Test, Inc. | 10%+ Owner | $41,220 | Mixed | 23 Jun 2025 |
Top shareholders of Ainos, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| AINOS INC |
3/4/5
13D/G
|
10%+ Owner |
6.8%
from 13D/G
|
12,281,601
|
$7,368,961 | — | 19 Apr 2023 | |
| Stephen T. Chen |
3/4/5
|
FORMER DIRECTOR & OFFICER |
—
class O/S missing
|
7,840,825
|
$4,704,495 | — | 27 Jun 2022 | |
| ScentAI Inc. |
13D/G
|
— |
16%
|
1,160,000
|
$2,308,400 | $0 | 30 Dec 2025 | |
| Taiwan Carbon Nano Technology Corp |
3/4/5
13D/G
|
10%+ Owner · Taiwan Carbon Nano Technology Corporation |
14%
from 13D/G
|
989,925
|
$2,147,840 | -$57,617 | 28 Jan 2026 | |
| Hsiu-Chen Chiu |
3/4/5
|
Director |
—
class O/S missing
|
3,001,500
|
$1,800,900 | — | 22 Dec 2021 | |
| ASE Technology Holding Co., Ltd. |
13D/G
|
— |
17%
|
3,148,788
|
$1,700,346 | $0 | 10 Mar 2025 | |
| Chun-Hsien Tsai |
13D/G
3/4/5
|
CEO, PRESIDENT, CHAIRMAN, Director |
7%
|
410,372
|
$1,493,754 | $0 | 25 Nov 2025 | |
| Ting-Chuan Lee |
13D/G
3/4/5
|
Director |
6%
|
365,707
|
$1,331,173 | $0 | 25 Nov 2025 | |
| Chun-Jung Tsai |
13D/G
3/4/5
|
Director |
6%
|
356,999
|
$1,299,476 | $0 | 25 Nov 2025 | |
| Wen-Han Chang |
3/4/5
|
Director |
1.4%
|
101,546
|
$213,246 | — | 25 Nov 2025 | |
| Yao-Chung Chiang |
3/4/5
|
Director |
1.3%
|
91,280
|
$191,688 | — | 25 Nov 2025 | |
| Chung-Yi Tsai |
3/4/5
|
Director |
1.3%
|
90,880
|
$190,848 | — | 25 Nov 2025 | |
| Pao-Sheng Wei |
3/4/5
|
Director |
1.3%
|
90,880
|
$190,848 | — | 25 Nov 2025 | |
| Hui-Lan Wu |
3/4/5
|
Chief Financial Officer |
—
mixed-class rows
|
233,438
mixed-class rows
|
$158,858 | — | 30 Jun 2023 | |
| Hsin-Liang Christopher Lee |
3/4/5
|
CFO |
1.1%
|
75,275
|
$158,077 | — | 25 Nov 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.94%
|
66,300
|
$108,732 | — | 31 Dec 2025 | |
| DRW Securities, LLC |
13F
|
Company |
0.94%
|
66,211
|
$108,586 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.69%
|
48,309
|
$79,227 | — | 31 Dec 2025 | |
| Meng Lin Sung |
3/4/5
|
Chief Financial Officer |
—
mixed-class rows
|
67,000
mixed-class rows
|
$56,701 | — | 16 Feb 2024 | |
| Lawrence K. Lin |
3/4/5
|
E.V.P. OF OPERATIONS |
—
mixed-class rows
|
109,089
mixed-class rows
|
$43,734 | — | 16 Feb 2024 | |
| ASE Test, Inc. |
3/4/5
|
10%+ Owner |
—
mixed-class rows
|
558,264
mixed-class rows
|
$41,220 | — | 23 Jun 2025 | |
| BOOTHBAY FUND MANAGEMENT, LLC |
13F
|
Company |
—
class O/S missing
|
25,000
|
$41,000 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
0.34%
|
24,228
|
$39,734 | — | 31 Dec 2025 | |
| Mariner, LLC |
13F
|
Company |
0.32%
|
22,800
|
$37,392 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.15%
|
10,196
|
$16,721 | — | 31 Dec 2025 | |
| HEIGHTS CAPITAL MANAGEMENT, INC |
13F
|
Company |
—
class O/S missing
|
55,837
|
$6,868 | — | 31 Dec 2025 | |
| BlackRock, Inc. |
13F
|
Company |
0.04%
|
3,065
|
$5,027 | — | 31 Dec 2025 | |
| Tower Research Capital LLC (TRC) |
13F
|
Company |
0.04%
|
3,010
|
$4,936 | — | 31 Dec 2025 | |
| Seneschal Advisors, LLC |
13F
|
Company |
0.03%
|
1,800
|
$2,952 | — | 31 Dec 2025 | |
| Steward Partners Investment Advisory, LLC |
13F
|
Company |
0.02%
|
1,208
|
$1,981 | — | 31 Dec 2025 | |
| Clear Street Group Inc. |
13F
|
Company |
—
class O/S missing
|
11,050
|
$1,359 | — | 31 Dec 2025 | |
| CITIGROUP INC |
13F
|
Company |
0.01%
|
814
|
$1,335 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
—
mixed-class rows
|
1,961
mixed-class rows
|
$1,128 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0%
|
19
|
$32 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for Ainos, Inc.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Taiwan Carbon Nano Technology Corp | AIMD | Common Stock | Sale | -4.44% | $99,806 | $2.17 | -46,000 | 989,925 | 28 Jan 2026 | Direct |
| Taiwan Carbon Nano Technology Corp | AIMD | Common Stock | Sale | -0.04% | $802 | $1.86 | -431 | 1,035,925 | 09 Jan 2026 | Direct |
| Taiwan Carbon Nano Technology Corp | AIMD | Common Stock | Sale | -0.08% | $1,534 | $1.80 | -850 | 1,036,356 | 08 Jan 2026 | Direct |
| Yao-Chung Chiang | AIMD | Common Stock | Award | 121.1% | 50,000 | 91,280 | 25 Nov 2025 | Direct | ||
| Yao-Chung Chiang | AIMD | RSU | Conversion of derivative security | -100% | -50,000 | 0 | 25 Nov 2025 | Direct | ||
| Yao-Chung Chiang | AIMD | RSU | Award | 50,000 | 0 | 25 Nov 2025 | Direct | |||
| Chun-Hsien Tsai | AIMD | Common Stock | Award | 24.2% | 80,000 | 410,372 | 25 Nov 2025 | Direct | ||
| Chun-Hsien Tsai | AIMD | RSU | Conversion of derivative security | -100% | -80,000 | 0 | 25 Nov 2025 | Direct | ||
| Chun-Hsien Tsai | AIMD | RSU | Award | 80,000 | 0 | 25 Nov 2025 | Direct | |||
| Ting-Chuan Lee | AIMD | Common Stock | Award | 28% | 80,000 | 365,707 | 25 Nov 2025 | Direct | ||
| Ting-Chuan Lee | AIMD | RSU | Conversion of derivative security | -100% | -80,000 | 0 | 25 Nov 2025 | Direct | ||
| Ting-Chuan Lee | AIMD | RSU | Award | 80,000 | 0 | 25 Nov 2025 | Direct | |||
| Wen-Han Chang | AIMD | Common Stock | Award | 97% | 50,000 | 101,546 | 25 Nov 2025 | Direct | ||
| Wen-Han Chang | AIMD | RSU | Conversion of derivative security | -100% | -50,000 | 0 | 25 Nov 2025 | Direct | ||
| Wen-Han Chang | AIMD | RSU | Award | 50,000 | 0 | 25 Nov 2025 | Direct | |||
| Chung-Yi Tsai | AIMD | Common Stock | Award | 122.3% | 50,000 | 90,880 | 25 Nov 2025 | Direct | ||
| Chung-Yi Tsai | AIMD | RSU | Conversion of derivative security | -100% | -50,000 | 0 | 25 Nov 2025 | Direct | ||
| Chung-Yi Tsai | AIMD | RSU | Award | 50,000 | 0 | 25 Nov 2025 | Direct | |||
| Pao-Sheng Wei | AIMD | Common Stock | Award | 122.3% | 50,000 | 90,880 | 25 Nov 2025 | Direct | ||
| Pao-Sheng Wei | AIMD | RSU | Conversion of derivative security | -100% | -50,000 | 0 | 25 Nov 2025 | Direct | ||
| Pao-Sheng Wei | AIMD | RSU | Award | 50,000 | 0 | 25 Nov 2025 | Direct | |||
| Hsin-Liang Christopher Lee | AIMD | Common Stock | Award | 36.2% | 20,000 | 75,275 | 25 Nov 2025 | Direct | ||
| Hsin-Liang Christopher Lee | AIMD | RSU | Conversion of derivative security | -100% | -20,000 | 0 | 25 Nov 2025 | Direct | ||
| Hsin-Liang Christopher Lee | AIMD | RSU | Award | 20,000 | 0 | 25 Nov 2025 | Direct | |||
| Chun-Jung Tsai | AIMD | Common Stock | Award | 28.9% | 80,000 | 356,999 | 25 Nov 2025 | Direct | ||
| Chun-Jung Tsai | AIMD | RSU | Conversion of derivative security | -100% | -80,000 | 0 | 25 Nov 2025 | Direct | ||
| Chun-Jung Tsai | AIMD | RSU | Award | 80,000 | 0 | 25 Nov 2025 | Direct | |||
| Taiwan Carbon Nano Technology Corp | AIMD | Common Stock | Sale | -0.67% | $25,130 | $3.59 | -7,000 | 1,037,206 | 06 Oct 2025 | Direct |
| Taiwan Carbon Nano Technology Corp | AIMD | Common Stock | Sale | -0.19% | $7,170 | $3.58 | -2,000 | 1,044,206 | 02 Oct 2025 | Direct |
| Taiwan Carbon Nano Technology Corp | AIMD | Common Stock | Sale | -0.16% | $5,888 | $3.46 | -1,700 | 1,046,206 | 01 Oct 2025 | Direct |
| Taiwan Carbon Nano Technology Corp | AIMD | Common Stock | Sale | -0.1% | $3,538 | $3.52 | -1,006 | 1,047,906 | 30 Sep 2025 | Direct |
| Taiwan Carbon Nano Technology Corp | AIMD | Common Stock | Sale | 1.94% | $59,000 | $2.95 | 20,000 | 1,048,912 | 06 Aug 2025 | Direct |
| Taiwan Carbon Nano Technology Corp | AIMD | Common Stock | Sale | 1.06% | $27,250 | $2.44 | 11,191 | 1,068,912 | 05 Aug 2025 | Direct |
| Taiwan Carbon Nano Technology Corp | AIMD | Common Stock | Sale | 0.65% | 7,000 | 1,080,103 | 18 Jul 2025 | Direct | ||
| Taiwan Carbon Nano Technology Corp | AIMD | Common Stock | Sale | 0.65% | 7,001 | 1,087,103 | 17 Jul 2025 | Direct | ||
| Chun-Jung Tsai | AIMD | Common Stock | Sale | -0.72% | $5,020 | $0.5020 | -10,000 | 1,384,997 | 27 Jun 2025 | Direct |
| Ting-Chuan Lee | AIMD | Common Stock | Sale | -0.2% | $1,476 | $0.5100 | -2,894 | 1,428,538 | 25 Jun 2025 | Direct |
| Chun-Jung Tsai | AIMD | Common Stock | Sale | -0.5% | $3,520 | $0.5028 | -7,000 | 1,394,997 | 25 Jun 2025 | Direct |
| Taiwan Carbon Nano Technology Corp | AIMD | Common Stock | Sale | 0.54% | 29,476 | 5,470,524 | 23 Jun 2025 | Direct | ||
| ASE Test, Inc. | AIMD | Common Stock, par value $0.01 per share | Purchase | 100.2% | 29,476 | 58,887 | 23 Jun 2025 | Direct | ||
| Chun-Jung Tsai | AIMD | Common Stock | Sale | -0.71% | $5,000 | $0.5000 | -10,000 | 1,401,997 | 23 Jun 2025 | Direct |
| Chun-Jung Tsai | AIMD | Common Stock | Sale | -0.77% | $6,015 | $0.5517 | -10,903 | 1,411,997 | 19 Jun 2025 | Direct |
| Chun-Jung Tsai | AIMD | Common Stock | Sale | -0.35% | $2,608 | $0.5217 | -5,000 | 1,422,900 | 18 Jun 2025 | Direct |
| Ting-Chuan Lee | AIMD | Common Stock | Award | 169.4% | 900,000 | 1,431,432 | 08 Apr 2025 | Direct | ||
| Ting-Chuan Lee | AIMD | RSU | Conversion of derivative security | -100% | -900,000 | 0 | 08 Apr 2025 | Direct | ||
| Ting-Chuan Lee | AIMD | RSU | Award | 900,000 | 0 | 08 Apr 2025 | Direct | |||
| Chun-Hsien Tsai | AIMD | Common Stock | Award | 119.7% | 900,000 | 1,651,862 | 08 Apr 2025 | Direct | ||
| Chun-Hsien Tsai | AIMD | RSU | Conversion of derivative security | -100% | -900,000 | 0 | 08 Apr 2025 | Direct | ||
| Chun-Hsien Tsai | AIMD | RSU | Award | 900,000 | 0 | 08 Apr 2025 | Direct | |||
| Chun-Jung Tsai | AIMD | Common Stock | Award | 170.5% | 900,000 | 1,427,900 | 08 Apr 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.