Ainos, Inc.
AIMD- Exchange
- Nasdaq
- Industry
- Computer Peripheral Equipment, NEC
- SEC CIK
- 0001014763
No open-market purchases or sales by Ainos, Inc. insiders were filed in the last 90 days; 14 institutions reported holding it in 13F filings for Q2 2026, worth $336.0K in total; no superinvestor holds it.
Other share classesAIMDW
Holders of 5% or more of AIMD
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Ainos, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| ScentAI Inc. | 13D | 16.50%1.16M shares | New | Jan 27, 20261 filing | Jan 27, 2026 | SEC |
| Taiwan Carbon Nano Technology Corp | 13D/A | 13.62%989.9K shares | −8.17 ppfrom 21.79% | Oct 9, 20252 filings | Jan 30, 2026 | SEC |
| lee ting-chuan | 13D/A | 10.98%935.7K shares | +4.98 ppfrom 6.00% | Apr 11, 20253 filings | Apr 17, 2026 | SEC |
| ASE Technology Holding Co., Ltd. | 13D/A | 8.40%667.1K shares | −8.60 ppfrom 17.00% | Mar 12, 20252 filings | Apr 15, 2026 | SEC |
| Tsai Chun-Jung | 13D/A | 8.06%687.0K shares | +2.06 ppfrom 6.00% | Nov 28, 20252 filings | Apr 17, 2026 | SEC |
| tsai chun-hsien | 13D/A | 7.00%410.4K shares | −1.31 ppfrom 8.31% | Apr 11, 20252 filings | Nov 28, 2025 | SEC |
| Ainos Inc | 13D/A | 5.76%491.3K shares | −1.00 ppfrom 6.76% | Apr 28, 202113 filings | Apr 17, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
25 Schedule 13D and 13G filings on Ainos, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Apr 17, 20264:20 PM ET | lee ting-chuan | 13D/A | 10.98%935.7K shares | +4.98 ppfrom 6.00% | Apr 15, 2026 | SEC |
| Apr 17, 20264:19 PM ET | Tsai Chun-Jung | 13D/A | 8.06%687.0K shares | +2.06 ppfrom 6.00% | Apr 15, 2026 | SEC |
| Apr 17, 20264:19 PM ET | Ainos Inc | 13D/A | 5.76%491.3K shares | −1.00 ppfrom 6.76% | Apr 15, 2026 | SEC |
| Apr 15, 20266:19 AM ET | ASE Technology Holding Co., Ltd.and 1 other | 13D/A | 8.40%667.1K shares | −8.60 ppfrom 17.00% | Apr 12, 2026 | SEC |
| Jan 30, 20264:10 PM ET | Ainos Inc | 13D/A | 6.76%491.3K shares | −1.76 ppfrom 8.52% | Jan 28, 2026 | SEC |
| Jan 30, 20264:10 PM ET | Taiwan Carbon Nano Technology Corp | 13D/A | 13.62%989.9K shares | −8.17 ppfrom 21.79% | Jan 28, 2026 | SEC |
| Jan 27, 20264:10 PM ET | ScentAI Inc. | 13D | 16.50%1.16M shares | New | Dec 30, 2025 | SEC |
| Nov 28, 20251:05 PM ET | Ainos Inc | 13D/A | 8.52%491.3K shares | −0.61 ppfrom 9.13% | Nov 25, 2025 | SEC |
| Nov 28, 20251:05 PM ET | Tsai Chun-Jung | 13D | 6.00%357.0K shares | New | Nov 25, 2025 | SEC |
| Nov 28, 20251:05 PM ET | tsai chun-hsien | 13D/A | 7.00%410.4K shares | −1.31 ppfrom 8.31% | Nov 25, 2025 | SEC |
| Nov 28, 20251:05 PM ET | lee ting-chuan | 13D/A | 6.00%365.7K shares | −1.20 ppfrom 7.20% | Nov 25, 2025 | SEC |
| Oct 9, 20256:11 AM ET | Taiwan Carbon Nano Technology Corp | 13D/A | 21.79%1.04M shares | – | Oct 6, 2025 | SEC |
| Oct 9, 20256:08 AM ET | Ainos Inc | 13D/A | 9.13%491.3K shares | −1.55 ppfrom 10.68% | Oct 6, 2025 | SEC |
| Apr 11, 20259:58 PM ET | lee ting-chuan | 13D | 7.20%1.43M shares | New | Apr 8, 2025 | SEC |
| Apr 11, 20259:57 PM ET | tsai chun-hsien | 13D | 8.31%1.65M shares | New | Apr 8, 2025 | SEC |
| Apr 9, 20256:59 PM ET | Ainos Inc | 13D/A | 10.68%2.46M shares | −1.42 ppfrom 12.10% | Apr 8, 2025 | SEC |
| Mar 12, 202511:24 AM ET | Ainos Inc | 13D/A | 12.10%2.46M shares | – | Mar 10, 2025 | SEC |
| Mar 12, 20256:18 AM ET | ASE Technology Holding Co., Ltd.and 1 other | 13D/A | 17.00%3.15M shares | – | Mar 10, 2025 | SEC |
| Mar 11, 2024 | Ainos Inc | 13D/AOld format | – | – | – | SEC |
| Jan 29, 2024 | Ainos Inc | 13D/AOld format | – | – | – | SEC |
| Aug 15, 2023 | Ainos Inc | 13D/AOld format | – | – | – | SEC |
| Sep 2, 2022 | Ainos Inc | 13D/AOld format | – | – | – | SEC |
| Mar 8, 2022 | Ainos Inc | 13D/AOld format | – | – | – | SEC |
| Dec 13, 2021 | Ainos Inc | 13D/AOld format | – | – | – | SEC |
| Apr 28, 2021 | Ainos Inc | 13DOld format | – | New | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Ainos, Inc. shares.
No Form 144 notices for Ainos, Inc. are on file.