Ainos (AIMD) director sells 28,800 shares of Common Stock to cover income tax obligations

Rhea-AI Filing Summary

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.

Insider Trade Summary

Net Seller: 28,800 shares ($53,510)

Net Sell 2 txns

Insider TSAI CHUN-JUNG

Role null

Sold 28,800 shs ($54K)

Type	Security	Shares	Price	Value
Sale	Common Stock	27,718	$1.87	$52K
Sale	Common Stock	1,082	$1.55	$2K

Holdings After Transaction: Common Stock — 658,199 shares (Direct, null)

Footnotes (1)

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Key Figures

Total shares sold: 28,800 shares Shares sold on May 22, 2026: 1,082 shares at $1.55/share Shares sold on May 26, 2026: 27,718 shares at $1.87/share +2 more

5 metrics

Total shares sold 28,800 shares Open-market sales of Common Stock

Shares sold on May 22, 2026 1,082 shares at $1.55/share Open-market sale of Common Stock

Shares sold on May 26, 2026 27,718 shares at $1.87/share Open-market sale of Common Stock

Shares held after transactions 658,199 shares Director’s direct Common Stock holdings post-sale

Net insider share change -28,800 shares Net-sell direction per transaction summary

Key Terms

Common Stock, open-market sale, income tax obligations

3 terms

Common Stock financial

"The Reporting Person sold shares of common stock to cover income tax obligations."

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

income tax obligations financial

"The Reporting Person sold shares of common stock to cover income tax obligations."

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

TSAI CHUN-JUNG

(Last) (First) (Middle)

10F-2, NO. 66, SHENGYI 5TH RD.

(Street)

ZHUBEI CITY F5 320

(City) (State) (Zip)

TAIWAN

(Country)

2. Issuer Name and Ticker or Trading Symbol
Ainos, Inc. [ AIMD ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/22/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/22/2026		S		1,082(1)	D	$1.55	685,917	D
Common Stock	05/26/2026		S		27,718(1)	D	$1.87	658,199	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The Reporting Person sold shares of common stock to cover income tax obligations.

	/s/ Chun-Hsien Tsai POA for Chun-Jung Tsai	05/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transactions did Ainos (AIMD) disclose in this Form 4?

Ainos reported that director Tsai Chun-Jung sold 28,800 shares of Common Stock in two open-market transactions. The sales occurred on May 22 and May 26, 2026, with different per-share prices for each transaction.

How many Ainos (AIMD) shares did the director sell and at what prices?

The director sold 1,082 shares at $1.55 per share and 27,718 shares at $1.87 per share. In total, 28,800 shares of Ainos Common Stock were sold across the two reported transactions.

Why did the Ainos (AIMD) director sell shares according to the filing?

A footnote explains the director sold shares of Ainos Common Stock to cover income tax obligations. This indicates the primary stated purpose of the transactions was tax-related rather than described as a discretionary portfolio change.

How many Ainos (AIMD) shares does the director hold after the sales?

Following the reported transactions, the director directly holds 658,199 shares of Ainos Common Stock. This post-transaction balance is disclosed in the Form 4 and reflects the remaining direct ownership after selling 28,800 shares.

Were any derivative securities involved in this Ainos (AIMD) Form 4?

The Form 4 data shows only non-derivative Common Stock transactions and lists no derivative positions in the derivative summary. The reported activity consists solely of open-market sales of Ainos Common Stock by the director.