Ainos holder reports 8.06% stake after RSUs
Ainos, Inc. investor Chun-Jung Tsai filed an amended Schedule 13D reporting beneficial ownership of 686,999 shares of common stock, representing 8.06% of the class.
Sentiment and the balance of points
Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.
Form Type
SCHEDULE 13D/A
Rhea-AI Filing Summary
Ainos, Inc. investor Chun-Jung Tsai filed an amended Schedule 13D reporting beneficial ownership of 686,999 shares of common stock, representing 8.06% of the class. These shares include 330,000 fully vested restricted stock units granted under the Ainos, Inc. 2023 Stock Incentive Plan.
The shares are subject to a voting agreement between the reporting person and Ainos Inc., a Cayman Islands corporation. Tsai states no current plans for major corporate actions but may review and change this position over time. The filer reports no other transactions in the past 60 days aside from the equity grant.
Key Figures
Beneficial ownership: 686,999 shares
Ownership percentage: 8.06%
Restricted stock units: 330,000 RSUs
+3 more
6 metrics
Beneficial ownership
686,999 shares
Shares of Ainos common stock beneficially owned by Chun-Jung Tsai
Ownership percentage
8.06%
Percent of Ainos common stock class represented by 686,999 shares
Restricted stock units
330,000 RSUs
Fully vested RSUs of Ainos common stock under 2023 Stock Incentive Plan
Shares outstanding
7,266,011 shares
Ainos common stock outstanding as of March 30, 2026
Service fee shares
19,531 shares
Ainos shares issued for service fee on April 1, 2026
Granted and vested shares
1,239,000 shares
Ainos common stock granted and vested on April 15, 2026 under 2023 Plan
Key Terms
beneficial ownership, restricted stock units, Stock Incentive Plan, voting agreement, +1 more
5 terms
beneficial ownership financial
"The numbers in Rows 8, 9, and 11 represents beneficial ownership of 686,999 shares of common stock"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
restricted stock units financial
"The Reporting Person acquired 330,000 restricted stock units ("RSUs") of Common Stock"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
Stock Incentive Plan financial
"under the Ainos, Inc. 2023 Stock Incentive Plan, all of which are fully vested"
A stock incentive plan is a company program that gives employees or directors pieces of ownership or the right to buy shares over time, similar to receiving a bonus paid in company stock instead of cash. Investors pay attention because these plans align staff incentives with long‑term company performance but can also dilute existing shareholders and affect reported profits when grants are expensed, so they influence both ownership percentages and financial results.
voting agreement financial
"which are subject to a voting agreement between the Reporting Person and Ainos Inc., a Cayman Islands corporation"
A voting agreement is a legally binding pact in which shareholders promise to cast their votes the same way on certain corporate matters, such as electing directors or approving a merger. It matters to investors because it changes who controls company decisions and makes outcomes more predictable—like a group of neighbors agreeing in advance to vote the same way on a community rule, it can strengthen or limit the influence of other shareholders and affect the company’s future direction.
Schedule 13D regulatory
"This Amendment No. 1 ("Amendment No. 1") amends the first filed with the Securities and Exchange Commission"
A Schedule 13D is a legal document that investors file with regulators when they buy a large enough stake in a company to potentially influence its management or decisions. It provides details about the investor’s intention, ownership stake, and plans, helping other investors understand who is gaining control and what their motives might be.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
Who is the reporting person in the Ainos (AIMD) Schedule 13D/A filing?
The reporting person is Chun-Jung Tsai, who filed an amended Schedule 13D on Ainos, Inc. common stock. Tsai reports beneficial ownership of 686,999 shares, partly through fully vested restricted stock units granted under the Ainos, Inc. 2023 Stock Incentive Plan.
What equity award did Chun-Jung Tsai receive from Ainos (AIMD)?
Chun-Jung Tsai acquired 330,000 restricted stock units (RSUs) of Ainos common stock under the Ainos, Inc. 2023 Stock Incentive Plan. The filing notes that all these RSUs are fully vested, increasing Tsai’s beneficial ownership and forming part of the 686,999 reported shares.
Does the Ainos (AIMD) Schedule 13D/A describe any plans to change company control?
The filing states Tsai currently has no specific plans for actions such as mergers, recapitalizations, or control changes. However, it notes Tsai may review and change this position over time and may seek to influence management or the board regarding the issuer’s business and affairs.
What role does the voting agreement play in Chun-Jung Tsai’s Ainos (AIMD) holdings?
The 686,999 beneficially owned shares are described as subject to a voting agreement between Tsai and Ainos Inc., a Cayman Islands corporation. This agreement affects how the shares’ voting rights are exercised, though detailed terms are referenced to other items in the same disclosure.
AI-generated analysis. How Rhea-AI works. Not financial advice.
Accepted by SEC EDGAR
Learn about SEC filing dates