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Ainos (NASDAQ: AIMD) director adds 300 shares in open-market buys

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

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.

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Insider chiang yao-chung
Role null
Bought 300 shs ($511.00)
Type Security Shares Price Value
Purchase Common Stock 200 $1.68 $336.00
Purchase Common Stock 100 $1.75 $175.00
Holdings After Transaction: Common Stock — 700 shares (Indirect, By Spouse)
Footnotes (1)
  1. [object Object]
Shares bought April 29, 2026 100 shares at $1.75 Open-market purchase of Ainos common stock
Shares bought April 30, 2026 200 shares at $1.68 Open-market purchase of Ainos common stock
Indirect holdings after latest trade 700 shares Held indirectly by spouse after April 30, 2026 purchase
Directly owned shares 90,880 shares Direct ownership noted in footnote as previously disclosed
Total net shares bought 300 shares Net-buy across two open-market transactions
open-market purchase financial
"transaction_action is described as "open-market purchase" for both trades"
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 is listed as "indirect" with code "I""
By Spouse financial
"nature_of_ownership field specifies "By Spouse" for the holdings"
non-derivative financial
"transaction_type is recorded as "non-derivative" for the common stock"
Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED 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 CITYF5302
(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)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/29/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock04/29/2026P100A$1.75500(1)IBy Spouse
Common Stock04/30/2026P200A$1.68700(1)IBy 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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
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 Chiang05/01/2026
** Signature of Reporting PersonDate
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

FAQ

What insider transactions did Ainos (AIMD) director Chiang Yao-Chung report?

Director Chiang Yao-Chung reported two open-market purchases of Ainos common stock through his spouse. He bought 100 shares at $1.75 per share and 200 shares at $1.68 per share, both in late April 2026.

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

Chiang Yao-Chung acquired 300 Ainos shares indirectly via his spouse. He purchased 100 shares at $1.75 per share on April 29, 2026, and 200 shares at $1.68 per share on April 30, 2026, in open-market transactions.

Are the newly purchased Ainos (AIMD) shares held directly or indirectly?

The 300 newly purchased shares are held as indirect ownership by the director’s spouse. The Form 4 lists the ownership type as indirect, with the nature of ownership described as “By Spouse,” indicating they are not held in his direct name.

What are director Chiang Yao-Chung’s total reported Ainos (AIMD) holdings after these trades?

After these transactions, the Form 4 shows 700 shares held indirectly via his spouse. A footnote adds that he also directly owns 90,880 shares of Ainos common stock, as previously disclosed in earlier filings.

Were these Ainos (AIMD) insider transactions buys or sales?

Both reported transactions are open-market purchases. The Form 4 uses transaction code “P” and describes them as purchases in open-market or private transactions, with no sales or disposals reported in this filing.

Does the Form 4 mention any derivative securities for Ainos (AIMD)?

This Form 4 reflects only non-derivative common stock transactions. The filing’s derivative summary is empty, indicating no option exercises, warrant conversions, or other derivative security events associated with these reported trades.