Ainos director buys 2,000 shares in open market

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.

Filing Impact

(Moderate)

Filing Sentiment

(Neutral)How Sentiment works

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Form Type

Rhea-AI Filing Summary

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.

Insider Trade Summary

Net Buyer: 2,000 shares

Net Buy 1 txn

Insider chiang yao-chung

Role Director

Bought 2,000 shs ($4K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	2,000	$2.00	$4K

Holdings After Transaction: Common Stock — 5,529 shares (Indirect, By Spouse)

Footnotes (1)

F1. In addition to the shares indirectly held, the Reporting Person directly owns 90,880 shares of the Issuer's common stock as previously disclosed.

Key Figures

Shares purchased: 2,000 shares Purchase price: $2.00 per share Indirect holdings after trade: 5,529 shares +1 more

4 metrics

Shares purchased 2,000 shares Open-market purchase on May 27, 2026

Purchase price $2.00 per share Common Stock, open-market transaction

Indirect holdings after trade 5,529 shares Indirectly owned through spouse after purchase

Directly owned shares 90,880 shares Direct ownership noted in footnote as previously disclosed

Key Terms

open-market purchase, indirect ownership, By Spouse, Common Stock

4 terms

open-market purchase financial

"transaction_action": "open-market purchase""

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

indirect ownership financial

""ownership_type": "indirect", "ownership_code": "I""

By Spouse financial

""nature_of_ownership": "By Spouse""

Common Stock financial

""security_title": "Common Stock""

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.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Ainos (AIMD) director Chiang Yao-chung report?

Director Chiang Yao-chung reported buying 2,000 Ainos common shares at $2.00 each in an open-market transaction. The purchase was made on May 27, 2026 and is held indirectly through his spouse.

How many Ainos (AIMD) shares does Chiang Yao-chung hold after this trade?

After the trade, Chiang Yao-chung has 5,529 Ainos shares held indirectly through his spouse. A footnote explains that, in addition, he directly owns 90,880 Ainos common shares from prior transactions.

Was the Ainos (AIMD) director’s May 27, 2026 trade a purchase or sale?

The May 27, 2026 transaction was a purchase of Ainos shares. It is classified as an open-market purchase, coded “P” on the Form 4, reflecting a voluntary buy rather than a grant or other non-market event.

How is ownership of the newly purchased Ainos (AIMD) shares structured?

The newly purchased 2,000 Ainos shares are reported as indirectly owned by Chiang Yao-chung through his spouse. The Form 4 lists the ownership type as indirect and notes the nature of ownership specifically as “By Spouse.”

Does Chiang Yao-chung hold additional Ainos (AIMD) shares beyond this indirect position?

Yes. A footnote states that, besides the indirectly held shares, Chiang Yao-chung directly owns 90,880 Ainos common shares. These direct holdings were previously disclosed and are separate from the 5,529 indirectly held shares.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/29/2026 - 04:10 PM EDT

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^*

chiang yao-chung

(Last)

(First)

(Middle)

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

(Street)

ZHUBEI CITY

302

(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)
05/27/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/27/2026		P		2,000	A	$2	5,529⁽¹⁾	I	By Spouse

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. In addition to the shares indirectly held, the Reporting Person directly owns 90,880 shares of the Issuer's common stock as previously disclosed.

	/s/ Chun-Hsien Tsai by POA for Yao-Chung Chiang	05/29/2026
	** 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)

Source: View Original Filing on SEC EDGAR