Ainos updates at-the-market stock sale capacity

Ainos, Inc. updated its at-the-market equity program with H.C.

Rhea-AI Filing Summary

Ainos, Inc. updated its at-the-market equity program with H.C. Wainwright to permit additional primary issuances of common stock with an aggregate offering price of up to $1,346,165 from time to time under the existing Sales Agreement.

Previously, Ainos sold $2,714,728.20 of securities under this agreement, including $1,960,544 pursuant to General Instruction I.B.6 of Form S-3 during the prior 12-month period. As of July 24, 2026, public float was approximately $9,920,125, based on 8,544,073 shares outstanding and a Nasdaq Capital Market price of $3.16 per share. The company states it will not sell more than one-third of its public float in any 12-month period while its public float remains below $75.0 million, in line with Form S-3 limitations.

Key Figures

New ATM capacity: $1,346,165 Securities sold under Sales Agreement: $2,714,728.20 Sales under I.B.6 in prior 12 months: $1,960,544 +5 more

8 metrics

New ATM capacity $1,346,165 Aggregate offering price of common stock that may be sold under the Sales Agreement

Securities sold under Sales Agreement $2,714,728.20 Total securities sold pursuant to the At the Market Offering Agreement

Sales under I.B.6 in prior 12 months $1,960,544 Securities sold pursuant to General Instruction I.B.6 during prior 12-calendar month period

Public float $9,920,125 Aggregate market value of non-affiliate common stock as of July 24, 2026

Shares outstanding 8,544,073 shares Common stock outstanding as of July 24, 2026

Affiliate-held shares 5,404,793 shares Portion of outstanding common stock held by affiliates

Reference share price $3.16 per share Last sale price on Nasdaq Capital Market on May 26, 2026 used to calculate float

Form S-3 float threshold $75.0 million Public float level below which one-third cap on primary offerings applies

Key Terms

at the market offerings, General Instruction I.B.6 of Form S-3, public float, At the Market Offering Agreement, +1 more

5 terms

at the market offerings financial

"through H.C. Wainwright & Co., LLC as sales agent, in “at the market offerings”"

At-the-market offerings are a way for a company to raise cash by selling newly issued shares directly into the open market at the current trading price through a broker, rather than in a single large sale. Think of it like topping up a gas tank a little at a time at whatever the pump price is; it gives the company flexibility to raise money when conditions are favorable but can increase the number of shares outstanding and dilute existing investors, and frequent or large sales can put downward pressure on the stock price.

General Instruction I.B.6 of Form S-3 regulatory

"public float calculated for purposes of General Instruction I.B.6 of Form S-3"

public float financial

"the aggregate market value of our outstanding Common Stock held by non-affiliates, or public float"

Public float is the total number of a company's shares that are available for trading by the general public. It excludes shares held by company insiders or large stakeholders who are unlikely to sell them easily. This figure helps investors understand how much of the company's stock is actively available, which can influence its liquidity and how easily its price might change.

At the Market Offering Agreement financial

"pursuant to the At the Market Offering Agreement with Wainwright dated as of May 31, 2024"

An at-the-market offering agreement is a contract that lets a company sell newly issued shares directly into the open market through a broker, at whatever price the stock is trading at that moment. For investors this matters because it can increase the number of shares available (which may dilute existing ownership) while providing a flexible, often faster way for the company to raise cash without fixing a price, similar to a vendor selling small batches at current market stalls rather than setting a single fixed price.

Nasdaq Capital Market market

"which was the price at which our Common Stock was last sold on the Nasdaq Capital Market"

The Nasdaq Capital Market is a platform where smaller, emerging companies can list their shares for trading by investors. It provides these companies with access to funding and visibility, helping them grow, much like a local marketplace where new vendors can introduce their products to potential customers. For investors, it offers opportunities to discover early-stage companies with growth potential.

Offering Details

ATM

Offering

Offering Type ATM

FAQ

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

What is Ainos, Inc. (AIMD) offering in this prospectus supplement?

Ainos is permitting additional sales of its common stock through H.C. Wainwright under an at-the-market program, with an aggregate offering price of up to $1,346,165 available to be sold from time to time.

How much has Ainos, Inc. (AIMD) already sold under the Sales Agreement?

Ainos has already sold $2,714,728.20 of securities under the at-the-market Sales Agreement. Of this, $1,960,544 was sold pursuant to General Instruction I.B.6 of Form S-3 during the prior 12-calendar month period.

What is Ainos, Inc. (AIMD)'s current public float and share count?

As of July 24, 2026, Ainos reported a public float of approximately $9,920,125, based on 8,544,073 shares of common stock outstanding, of which 5,404,793 shares were held by affiliates, using a $3.16 per-share Nasdaq price.

What limitation applies to Ainos, Inc. (AIMD)'s primary offerings under Form S-3?

Ainos states that, under General Instruction I.B.6 of Form S-3, it will not sell securities in a public primary offering exceeding one-third of its public float in any 12-month period while public float remains below $75.0 million.

Who is the sales agent for Ainos, Inc. (AIMD)'s at-the-market offerings?

H.C. Wainwright & Co., LLC acts as sales agent for Ainos’ at-the-market offerings under the At the Market Offering Agreement dated May 31, 2024, handling sales of common stock into the market.

What stock exchange is Ainos, Inc. (AIMD) listed on and what price was used?

Ainos’ common stock trades on the Nasdaq Capital Market. The company used a reference price of $3.16 per share, which was the last sale price on May 26, 2026, to calculate its public float.

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

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Available on EDGAR 07/24/2026 - 12:17 PM Accepted by SEC EDGAR 07/24/2026 - 12:16 PM Learn about SEC filing dates

Filed pursuant to Rule 424(b)(5)

Registration No. 333-279880

PROSPECTUS SUPPLEMENT

(To Prospectus Dated June 11, 2024, the Prospectus Supplements dated July 11, 2024 and September 5, 2025, respectively)

AINOS, INC.

Up to $1,346,165

of Common Stock

This prospectus supplement amends, supplements, and supersedes certain information contained in the prospectus supplements dated July 11, 2024 and September 5, 2025, respectively, and their accompanying prospectus dated June 11, 2024 (collectively, the “Prospectus”), relating to the offer and sale of our common stock, par value $0.01 per share (the “Common Stock”) through H.C. Wainwright & Co., LLC (“Wainwright”), as sales agent, in “at the market offerings” as defined in Rule 415 promulgated under the Securities Act of 1933, as amended, pursuant to the At the Market Offering Agreement with Wainwright dated as of May 31, 2024 (the “Sales Agreement”).

We have sold $2,714,728.20 of securities pursuant to the Sales Agreement.

As of July 24, 2026, the aggregate market value of our outstanding Common Stock held by non-affiliates, or public float calculated for purposes of General Instruction I.B.6 of Form S-3, was approximately $9,920,125, based on 8,544,073 shares of outstanding Common Stock as of July 24, 2026, of which 5,404,793 shares were held by affiliates, and a price of $3.16 per share, which was the price at which our Common Stock was last sold on the Nasdaq Capital Market on May 26, 2026.

We have sold $1,960,544 of securities pursuant to General Instruction I.B.6 of Form S-3 during the prior 12-calendar month period that ends on and includes the date of this prospectus supplement.

We are filing this prospectus supplement to amend the Prospectus to update the amount of shares we are eligible to sell pursuant to such prospectus. We are increasing the amount of shares of Common Stock we may offer and sell under the Sales Agreement to an aggregate offering price of up to $1,346,165 from time to time through Wainwright. Pursuant to General Instruction I.B.6 of Form S-3, in no event will we sell securities in a public primary offering with a value exceeding one-third of our public float in any 12-month calendar period so long as our public float remains below $75.0 million.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities, or determined if this prospectus is accurate or complete. Any representation to the contrary is a criminal offense.

H.C. Wainwright & Co.

The date of this prospectus supplement is July 24, 2026