Every Form 4 that Ainos Inc (AIMD) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow AIMD and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full AIMD filings page.
Ainos, Inc. director Chiang Yao-chung reported an indirect open-market purchase of 3,500 shares of common stock at $2.05 per share, held in the name of his spouse. Following this transaction, indirect holdings total 11,279 shares, in addition to 90,880 shares directly owned as previously disclosed.
Ainos, Inc. director Chiang Yao-Chung reported an open-market purchase of 2,000 shares of the company’s common stock at $2.13 per share. The shares are held indirectly through the director’s spouse, bringing indirect holdings to 7,779 shares. In addition, the director directly owns 90,880 shares of Ainos common stock as previously disclosed.
Ainos, Inc. director Chiang Yao-chung reported an open-market purchase of 250 shares of common stock at $2.30 per share on behalf of a spouse-held account. After this indirect transaction, that account holds 5,779 shares, while the director also directly owns 90,880 shares of Ainos common stock as previously disclosed.
Ainos, Inc. director Chiang Yao-chung reported an open-market purchase of 2,000 shares of common stock at $2.00 per share on May 27, 2026. The shares are held indirectly through his spouse, bringing indirect holdings to 5,529 shares. A footnote states he also directly owns 90,880 shares of Ainos common stock, indicating this trade is a modest increase to his overall position.
Ainos, Inc. director Lee Ting-Chuan reported an open-market sale of common stock. On May 26, 2026, the director sold 109,988 shares at $1.90 per share to cover income tax obligations, according to the footnote. After this transaction, the director directly holds 807,417 common shares.
Taiwan Carbon Nano Technology Corp, a ten percent owner of Ainos, Inc., reported an open-market sale of common stock. The entity sold 41,000 shares on May 26, 2026 at an average price of $2.36 per share and held 948,925 shares afterward.
According to a footnote, the shares were sold to cover income tax obligations, which makes this a more routine, tax-related transaction rather than a large change in ownership position.
Ainos, Inc. director Tsai Chun-Jung sold a total of 28,800 shares of Common Stock in open-market transactions. The sales occurred at prices of $1.55 and $1.87 per share. A footnote states the shares were sold to cover income tax obligations. After these transactions, Tsai directly holds 658,199 shares.
Ainos, Inc. director Lee Ting-Chuan sold a total of 18,302 shares of Common Stock in open-market transactions on May 21 and 22 at prices of $1.56 and $1.57 per share. A footnote explains that the sales were made to cover income tax obligations, and he continues to own 917,405 shares directly after these trades.
Ainos, Inc. director Chiang Yao-Chung reported two open-market purchases of the company’s common stock through indirect ownership by his spouse. On May 19, his spouse bought 2,200 shares at $1.68 per share, bringing that indirect position to 3,529 shares. On May 18, his spouse bought 500 shares at $1.65 per share, bringing that indirect position to 1,329 shares. A footnote states that, in addition to these indirect holdings, Chiang directly owns 90,880 shares of Ainos common stock.
Ainos, Inc. director Chiang Yao-Chung reported an open-market purchase of the company’s common stock through an indirect holding. On May 5, 2026, a spouse-related account bought 129 shares at $1.70 per share, bringing this indirect position to 829 shares.
In addition to these indirectly held shares, the reporting person also directly owns 90,880 shares of Ainos common stock as previously disclosed, indicating that the newly reported transaction is small compared with the existing direct holdings.
Ainos, Inc. director Chiang Yao-Chung reported two open-market purchases of the company’s common stock through indirect ownership by his spouse. He bought 100 shares at $1.75 per share on April 29, 2026 and 200 shares at $1.68 per share on April 30, 2026, increasing indirect holdings to 700 shares. A footnote states he also directly owns 90,880 shares of Ainos common stock as previously disclosed.
Ainos, Inc. director TSAI CHUN-JUNG received equity compensation through restricted stock units that immediately converted into common shares. On the transaction date, 330,000 RSUs were granted and vested under the Ainos, Inc. 2023 Stock Incentive Plan and then converted into 330,000 shares of common stock at a stated price of $1.61 per share. Following these transactions, TSAI directly holds 686,999 shares of Ainos common stock. These are compensation-related awards rather than open-market purchases or sales.
Ainos, Inc. director and CEO Tsai Chun-hsien reported equity awards and a conversion on April 15, 2026. He received 300,000 RSUs that vested under the Ainos, Inc. 2023 Stock Incentive Plan, which were then converted into 300,000 shares of Common Stock. A related award entry shows these 300,000 Common shares at $1.61 per share, bringing his directly held Common Stock to 710,372 shares after the transactions. No open-market purchases or sales were reported; all activity reflects compensation-related grants and a derivative conversion.
Ainos, Inc. director Lee Ting-chuan reported equity compensation activity involving restricted stock units (RSUs) that converted into common shares. On April 15, 2026, he received 570,000 RSUs granted and vested under the Ainos, Inc. 2023 Stock Incentive Plan, which were then converted into 570,000 shares of common stock at a reported value of $1.61 per share. After these award and conversion transactions, Lee directly holds 935,707 shares of Ainos common stock. These are compensation-related acquisitions rather than open-market purchases or sales.
ASE Test, Inc., a 10% owner of Ainos, Inc., reported an open-market purchase of 6% Convertible Notes due 2027. The transaction covers 5,994 units of the note, each currently convertible into Ainos common stock at a $22.50 per share conversion price. Following this transaction, ASE Test, Inc. holds 105,868 units of the convertible note. The notes bear 6% compounded interest and have a maturity date extended to March 12, 2027 under an amended agreement.
Taiwan Carbon Nano Technology Corp, a more than 10% owner of Ainos, Inc., reported selling 46,000 shares of Ainos common stock on January 28, 2026 at an average price of $2.1697 per share for general operating purposes.
After this transaction, the reporting shareholder directly owned 989,925 Ainos common shares.
Taiwan Carbon Nano Technology Corp, a 10% owner of Ainos, Inc., reported small open-market sales of Ainos common stock. On January 8, 2026, it sold 850 shares at $1.8048 per share, leaving 1,036,356 shares beneficially owned. On January 9, 2026, it sold an additional 431 shares at $1.86 per share, after which it held 1,035,925 shares directly.
According to the footnote, the reporting person sold these shares of common stock for general operating purposes.
Ainos, Inc. (AIMD) reported that one of its directors acquired additional equity in the company. On November 25, 2025, the director received 50,000 shares of common stock as special stock awards at a price of $2.10 per share, increasing the director’s holdings to 91,280 shares held directly. The filing shows related derivative entries for 50,000 RSUs that were acquired and then converted into the same number of common shares on the same date.
The company’s stockholders had previously approved these special stock awards on November 7, 2025, indicating that this equity grant was part of an authorized compensation arrangement. This transaction aligns the director’s interests more closely with the performance of Ainos, Inc. through a larger direct ownership stake.
Ainos, Inc. (AIMD) reported an insider equity award for its CEO, President and Chairman, Chun-Hsien Tsai. On November 25, 2025, he acquired 80,000 shares of common stock at a reported price of $2.10 per share, classified as an acquisition of non-derivative securities. Following this transaction, he beneficially owned 410,372 shares of Ainos common stock directly.
The filing also shows related derivative activity, where 80,000 restricted stock units (RSUs) were converted into the same number of common shares and the RSU balance went to zero. The company notes these 80,000 shares were granted and vested as special stock awards on November 25, 2025, after having been approved by Ainos stockholders on November 7, 2025.
Ainos, Inc. (AIMD) director received a special stock award that resulted in the acquisition of 80,000 shares of common stock on November 25, 2025 at a price of $2.10 per share. These shares were granted and fully vested as special stock awards that had been approved by Ainos stockholders on November 7, 2025. Following this transaction, the reporting person now beneficially owns 365,707 shares of Ainos common stock directly.
Ainos, Inc. (AIMD) reported an insider equity award to one of its directors. On November 25, 2025, the reporting person received a grant of 50,000 shares of common stock as special stock awards, which were granted and vested on the same date at a reported price of $2.10 per share. These awards had been approved by Ainos stockholders on November 7, 2025.
Following this transaction, the director beneficially owns 101,546 shares of Ainos common stock in direct ownership. The filing also shows related movements in derivative securities (RSUs) that correspond to the 50,000 underlying common shares, with the RSU position moving to zero after conversion into common stock.
Ainos, Inc. (AIMD) reported an insider equity transaction by a director. On 11/25/2025, the reporting person received 50,000 shares of common stock as special stock awards at a reported price of $2.10 per share, increasing their directly held stake to 90,880 shares after the transaction. These 50,000 shares were granted and vested as part of special stock awards that had been approved by Ainos stockholders on 11/7/2025. The filing also shows related movements in restricted stock units and their conversion into common stock.
Ainos, Inc. (AIMD) reported an insider equity transaction by a director. On November 25, 2025, the director received 50,000 shares of common stock as special stock awards, which were granted and vested on that date. The awards were previously approved by Ainos stockholders on November 7, 2025.
The filing shows the 50,000 shares were acquired at a price of $2.10 per share, increasing the director’s directly held stake to 90,880 shares of Ainos common stock following the transaction. The Form 4 also reflects related movements in restricted stock units (RSUs) that converted into the same number of common shares.
Ainos, Inc. (AIMD) reported that its Chief Financial Officer received a special stock award. On November 25, 2025, the CFO acquired 20,000 shares of common stock at a price of $2.10 per share, following the vesting of a restricted stock unit grant reported in the derivative table. After this transaction, the CFO beneficially owns 75,275 shares of Ainos common stock directly. The company’s stockholders had previously approved these special stock awards on November 7, 2025.
Ainos, Inc. (AIMD) reported an insider equity award for a director. On November 25, 2025, the reporting person, serving as a director, acquired 80,000 shares of common stock at $2.10 per share, following the vesting of 80,000 restricted stock units (RSUs) granted as special stock awards. After this transaction, the director beneficially owned 356,999 shares of Ainos common stock in direct ownership. The filing notes that these special stock awards were approved by Ainos stockholders on November 7, 2025.
Form 4 disclosure: Taiwan Carbon Nano Technology Corporation, reported by Chun-Hsien Tsai as reporting person, recorded an insider sale in Ainos, Inc. (AIMD). On 10/06/2025 the reporting person sold 7,000 shares of common stock at a price of $3.59 per share for general operating purposes. Following the sale the reporting person beneficially owned 1,037,206 shares. The filer indicated the reporting relationship as Director and 10% owner. The Form 4 shows a routine, disclosed insider sale and provides the required Section 16 reporting details.
Ainos, Inc. (AIMD) reported a Form 4 showing that Taiwan Carbon Nano Technology Corporation, a director-related reporting person, sold 2,000 shares of common stock on 10/02/2025 at a price of $3.585 per share. After the sale the reporting person beneficially owned 1,044,206 shares. The filing states the shares were sold for general operating purposes. The Form 4 was signed on 10/06/2025 by the reporting entity's chairman and CEO.
Taiwan Carbon Nano Technology Corporation, identified as a director of Ainos, Inc. (AIMD), reported two open-market stock sales. On 09/30/2025 the reporting person sold 1,006 shares at $3.5167 each, reducing beneficial holdings to 1,047,906 shares. On 10/01/2025 they sold 1,700 shares at $3.4633, reducing holdings to 1,046,206 shares. The filing states the shares were sold for general operating purposes. The transactions are reported as direct beneficial ownership and coded as sales.