Supplemental Prospectus (Form 424B3)

Table of Contents

Filed Pursuant to Rule 424(b)(3)

Registration No. 333-291949

PROSPECTUS

2,236,136 Shares of Common Stock and

Up to 6,873,350 Shares of Common Stock Issuable Upon Exercise of Warrants

This prospectus relates to the resale or other disposition from time to time by the selling stockholders identified herein (each, a "Selling Stockholder" and, together, the "Selling Stockholders") or their pledgees, assignees, distributees and successors-in-interest from time to time, of 2,236,136 shares of Company Common Stock, par value $0.001 per share ("Common Stock") issued pursuant to a November 2025 private placement transaction, and up to 6,873,350 shares of Common Stock issuable pursuant to the following warrants:

(i) 1,272,436 shares of Common Stock issuable upon the exercise of certain warrants (the "July Warrants"), which contain full-ratchet anti-dilution provisions, issued pursuant to that certain Securities Purchase Agreement dated July 17, 2025 (the "July SPA") in a private placement concurrent with a registered direct offering and sale of shares of Common Stock (the "July Offering"). When originally issued, the July Warrants were exercisable for 1,612,903 shares of Common Stock at an exercise price of $1.20 per share. As a result of subsequent issuances of securities by the Company, the July Warrants have been subsequently adjusted, with the result that the July Warrants are exercisable for an additional 1,272,436 shares (for a current aggregate total of 2,885,339 shares), and have a current exercise price of $0.6708 per share (the "July Warrant Shares");

(ii) 1,106,102 shares of Company Common Stock issuable upon the exercise of certain warrants (the "September 11 Warrants") to purchase shares of Common Stock, with a current exercise price of $0.73 per share (the "September 11 Warrant Shares"), issued pursuant to those certain Note Purchase Agreements dated September 11, 2025 (the "September 11 Note Purchase Agreements") in connection with the issuance of secured promissory notes (the "September 11 Offering");

(iii) 544,303 shares of Company Common Stock issuable upon the exercise of certain warrants (the "September 29 Warrants") to purchase shares of Common Stock, with current exercise prices of either $0.73 per share (with respect to certain September 29 Warrants exercisable for 137,471 shares of Common Stock) $0.74 per share (with respect to the remainder of the September 29 Warrants) (collectively, the "September 29 Warrant Shares"), issued pursuant to that certain Note Purchase Agreement dated September 29, 2025 (the "September 29 Note Purchase Agreement") in connection with the issuance of additional secured promissory notes (the "September 29 Offering");

(iv) 2,236,136 shares of Company Common Stock issuable upon the exercise of those certain warrants (the "Private Placement Warrants") to purchase shares of Common Stock, with an exercise price of $0.6708 per share (the "Private Placement Warrant Shares"), issued pursuant to that certain Securities Purchase Agreement dated November 5, 2025 (the "Private Placement SPA") in a private placement (the "November Private Placement Transaction"); and

(v) 1,714,373 shares of Company Common Stock issuable upon the exercise of those certain warrants (the "November Warrants") to purchase shares of Common Stock, with an exercise price of $0.6708 per share (the "November Warrant Shares"), issued pursuant to that certain Securities Purchase Agreement dated November 5, 2025 (the "RDO SPA") in a private placement concurrent with a registered direct offering and sale of shares of Common Stock (the "November RDO Offering").

The July Warrants, September 11 Warrants, September 29 Warrants, Private Placement Warrants and November Warrants, are collectively referred to herein as the "Warrants." The July Warrant Shares, September 11 Warrant Shares, September 29 Warrant Shares, Private Placement Warrant Shares and November Warrant Shares, are collectively referred to herein as the "Warrant Shares." The July Offering, September 11 Offering, September 29 Offering, November Private Placement Transaction and November RDO Offering, are collectively referred to herein as the "Offerings."

We registered the offer and sale of Common Stock on behalf of the Selling Stockholders to satisfy certain registration rights that we have granted to the Selling Stockholders.

Each Selling Stockholder may, from time to time, sell, transfer, or otherwise dispose of any or all the Common Stock on any stock exchange, market, or trading facility on which shares of our Common Stock are traded or in private transactions. These dispositions may be at fixed prices, at prevailing market prices at the time of sale, at prices related to the prevailing market price, at varying prices determined at the time of sale, or at negotiated prices.

The Selling Stockholders will bear all commissions and discounts, if any, attributable to the sales of Common Stock. We will bear all other costs, expenses, and fees in connection with the registration of the Common Stock. See "Plan of Distribution" which begins on page 18 of this prospectus.

We are not offering any shares of our Common Stock for sale under this prospectus. We will not receive any of the proceeds from the sale or other disposition of our Common Stock by the Selling Stockholders. However, we may receive proceeds of up to approximately $4.71 million if all the Warrants held by the Selling Stockholders are exercised for cash, based on the current per share exercise prices of the Warrants. Our Common Stock is listed on the Nasdaq Capital Market under the symbol "SMSI." On December 3, 2025, the last reported sale price of our Common Stock on the Nasdaq Capital Market was $0.6083.

INVESTING IN OUR COMMON STOCK INVOLVES A HIGH DEGREE OF RISK. YOU SHOULD CAREFULLY CONSIDER THE RISKS AND UNCERTAINTIES IN THE SECTION ENTITLED "RISK FACTORS" BEGINNING ON PAGE 9 OF THIS PROSPECTUS AND IN THE OTHER DOCUMENTS THAT ARE INCORPORATED BY REFERENCE BEFORE PURCHASING ANY OF THE SHARES OFFERED BY THIS PROSPECTUS.

We may amend or supplement this prospectus from time to time by filing amendments or supplements as required. You should read the entire prospectus and any amendments or supplements carefully before you make your investment decision.

Neither the Securities and Exchange Commission (the "SEC") nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

The date of this prospectus is December 15, 2025

	Page
ABOUT THIS PROSPECTUS	1
PROSPECTUS SUMMARY	2
THE OFFERING	7
SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS	8
RISK FACTORS	9
DIVIDEND POLICY	10
DILUTION	10
USE OF PROCEEDS	10
DETERMINATION OF OFFERING PRICE	10
THE SELLING STOCKHOLDERS	11
PLAN OF DISTRIBUTION	18
DESCRIPTION OF SECURITIES TO BE REGISTERED	20
LEGAL MATTERS	20
EXPERTS	21
WHERE YOU CAN FIND MORE INFORMATION	21
INCORPORATION OF CERTAIN INFORMATION BY REFERENCE	21

ABOUT THIS PROSPECTUS

This prospectus provides you with a general description of the Common Stock that may be resold by the Selling Stockholders. In certain circumstances, we may provide a prospectus supplement that will contain specific information about the terms of a particular offering by the Selling Stockholders. We also may provide a prospectus supplement to add information to, or update or change information contained in, this prospectus. To the extent there is a conflict between the information contained in this prospectus and any prospectus supplement, you should rely on the information in the prospectus supplement, provided that if any statement in one of these documents is inconsistent with a statement in another document having a later date - for example, a document incorporated by reference in this prospectus or any prospectus supplement - the statement in the later-dated document modifies or supersedes the earlier statement.

This prospectus is part of a registration statement that we have filed with the SEC pursuant to which the Selling Stockholders named herein may, from time to time, offer and sell or otherwise dispose of the Common Stock covered by this prospectus. You should rely only on the information contained in this prospectus or any related prospectus supplement. We have not authorized anyone to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. The information contained in this prospectus is accurate only on the date of this prospectus. Our business, financial condition, results of operations and prospects may have changed since such date. Other than as required under the federal securities laws, we undertake no obligation to publicly update or revise such information, whether as a result of new information, future events or any other reason. This prospectus contains summaries of certain provisions contained in some of the documents described herein, but reference is made to the actual documents for complete information. All the summaries are qualified in their entirety by the actual documents. Copies of some of the documents referred to herein have been filed, will be filed, or will be incorporated by reference as exhibits to the registration statement of which this prospectus is a part, and you may obtain copies of those documents as described below under "Where You Can Find More Information."

This prospectus does not constitute an offer to sell or the solicitation of an offer to buy any of our securities other than the Common Stock covered hereby, nor does this prospectus constitute an offer to sell or the solicitation of an offer to buy any securities in any jurisdiction to any person to whom it is unlawful to make such offer or solicitation in such jurisdiction. Persons who come into possession of this prospectus in jurisdictions outside the United States are required to inform themselves about, and to observe, any restrictions as to the offering and the distribution of this prospectus applicable to those jurisdictions.

This prospectus and the information incorporated by reference herein and therein contains references to trademarks, trade names and service marks belonging to us or other entities. Solely for convenience, trademarks, trade names and service marks referred to in this prospectus may appear without the ® or TM symbols, but such references are not intended to indicate, in any way, that the applicable owner will not assert, to the fullest extent under applicable law, its rights to these trademarks and trade names. We do not intend our use or display of other companies' trade names, trademarks, or service marks to imply a relationship with, or endorsement or sponsorship of us by, any other companies. All trademarks, trade names, and service marks included or incorporated by reference into this prospectus are the property of their respective owners.

PROSPECTUS SUMMARY

This summary highlights, and is qualified in its entirety by, the more detailed information and financial statements included elsewhere or incorporated by reference in this prospectus. This summary does not contain all of the information that may be important to you in making your investment decision. You should read this entire prospectus carefully, especially the "Risk Factors" section beginning on page 9, and the financial statements and other information incorporated by reference into this prospectus. In this prospectus, except as otherwise indicated, the terms "Smith Micro," "the Company," "we," "us," or "our" in this prospectus refer to Smith Micro Software, Inc., a Delaware corporation, and its wholly-owned subsidiaries.

Overview

Smith Micro provides software solutions that simplify and enhance the mobile experience to some of the leading wireless service providers around the globe. From enabling the Digital Family Lifestyle™ to providing powerful voice messaging capabilities, we strive to enrich today's connected lifestyles while creating new opportunities to engage consumers via smartphones and consumer Internet of Things ("IoT") devices.

We continue to innovate and evolve our business to respond to industry trends and maximize opportunities in growing and evolving markets, such as digital lifestyle services and online safety, the consumer IoT marketplace, and by leveraging advanced technologies like artificial intelligence to enhance the features and capabilities of our solutions. The key to our longevity, however, is not simply technological innovation, but our focus on understanding our customers' needs and delivering value.

Business Segment

We currently have one reportable operating segment: Wireless.

The wireless industry continues to undergo rapid change on all fronts as connected devices, mobile applications, and digital content are consumed by users who want information, high-speed wireless connectivity and entertainment, anytime, anywhere. While most of us think about being "connected" in terms of computers, tablets and smartphones, the consumer IoT market is creating a world where almost anything can be connected to the wireless Internet. Wearable devices such as smartwatches, fitness trackers, pet trackers and GPS locators, as well as smart home devices, are now commonplace, enabling people, pets, and things to be connected to the "Internet of Everything." These devices have created an entire ecosystem of over-the-top ("OTT") apps that provide products over the Internet to bypass traditional distribution methods, while expanding how communication service providers can provide value to mobile consumers.

Although there are numerous business opportunities associated with pervasive connectivity, there are also numerous challenges, including:

•	The average age by which most children use smartphones and other connected devices continues to decrease. As such, parents and guardians must be proactive in managing and combating digital lifestyle issues such as excessive screen time, cyberbullying, and online safety;

•	As IoT use cases continue to proliferate and scale, management complexity, security and interoperability must be addressed efficiently and correctly;

•	Mobile network operators ("MNO") are being marginalized by messaging applications, and face growing competitive pressure from cable multiple system operators ("MSO") and others deploying Wi-Fi networks to attract mobile users;

•	Enterprises face increasing pressure to mobilize workforces, operations, and customer engagement, but lack the expertise and technologies needed to leverage mobile technology securely and cost-effectively;

•	The ubiquity and convenience of e-commerce has created the need for consumer-facing brands to reimagine brick-and-mortar retail experiences; and

•	The change in dynamics of work, school and home life has led to an increased use of mobile devices for work, education and entertainment which has given rise to a new set of challenges and issues.

Products

To address these challenges, Smith Micro offers the following solutions:

SafePath® - The SafePath product suite provides comprehensive and easy-to-use tools to protect family digital lifestyles and manage connected devices both inside and outside the home. As a carrier-grade, white-label platform, SafePath empowers MNO and cable operators to bring to market full-featured, on-brand family safety solutions that provide in-demand services to mobile subscribers. These solutions include location tracking, parental controls, driver safety functionality, and enhanced AI/machine learning to optimize and customize families' online experience and provide social media intelligence to help parents and guardians better understand their children's online world. In 2024, we launched SafePath Global™, a new deployment and launch model that allows MNOs to rapidly deliver SafePath to their users with faster time-to-market, minimal reliance on their own internal resources, and easy customer onboarding. Our SafePath-based solutions have traditionally been delivered to end-users as value-added services, offering new revenue streams for MNOs while helping to increase brand affinity and reduce subscriber churn. More recently, our latest innovations in the SafePath platform focus on aligning with MNOs' core business - meeting them with solutions that support what they sell best. With our latest innovations in SafePath Kids™ and SafePath OS™, carriers can leverage the strength of our SafePath solutions to offer devices and rate plans aimed at creating a safer mobile experience, not as value-added-services, but as an integral component of the carrier's core offerings. We launched SafePath Kids in 2024 as a new and innovative implementation of our solution, which enables MNOs to offer rate plans for children with built-in protections, and the Company in 2025 has launched SafePath OS, a software solution designed to be pre-installed and configured on mobile devices to enable MNOs to offer kids phones and senior phones with key features and protections of our SafePath family safety solution out of the box.

CommSuite® - The CommSuite premium messaging platform helps mobile service providers deliver a next-generation voicemail experience to mobile subscribers, while monetizing a legacy cost-center. CommSuite Visual Voicemail ("VVM") and Premium Visual Voicemail ("PVVM") quickly and easily allows users to manage voice messages just like email or SMS with reply, forwarding and social sharing options. CommSuite also enables multi-language Voice-to-Text ("VTT") transcription messaging, which facilitates convenient message consumption for users by reading versus listening. The CommSuite platform is available to both postpaid subscribers as well as prepaid subscribers and is installed on millions of Android handsets in the United States.

Marketing and Sales Strategy

Because of our broad product portfolio, deep integration and product development experience and flexible business models we can quickly bring to market innovative solutions that support our customers' needs, which creates new revenue opportunities and differentiates their products and services from their competitors.

Our marketing and sales strategy is as follows:

Leverage Operator Relationships. We continue to capitalize on our strong relationships with the world's leading MNOs and MSOs. These customers serve as our primary distribution channel, providing access to hundreds of millions of end-users around the world.

Focus on High-Growth Markets. We continue to focus on providing digital lifestyle solutions and premium messaging services.

Expand our Customer Base. In addition to growing our business with current customers, we look to add new MNO and MSO customers worldwide, as well as to expand into new partnerships as we extend the reach of our product platforms within the connected lifestyle ecosystem.

Key Revenue Contributors

In our business, we market and sell our products primarily to large MNOs and MSOs, so there are a limited number of actual and potential customers for our current products, resulting in significant customer concentration. With the launch of SafePath Global, we plan to expand our customer reach more easily to smaller MNOs and MSOs.

Customer Service and Technical Support

We provide technical support and customer service through our online knowledge base, email, and live chat. Our operator customers generally provide their own primary customer support functions and rely on us for support to their technical support personnel.

Product Development

The software industry, particularly the wireless market, is characterized by rapid and frequent changes in technology and user needs. We work closely with industry groups and customers, both current and potential, to help us anticipate changes in technology and determine future customer needs. Software functionality depends upon the capabilities of the related hardware. Accordingly, we maintain engineering relationships with various hardware manufacturers, and we develop our software in tandem with their product development. Our engineering relationships with manufacturers, as well as with our major customers, are central to our product development efforts. We remain focused on the development and expansion of our technology, particularly in the wireless space.

Competition

The markets in which we operate are highly competitive and subject to rapid changes in technology. These conditions create new opportunities for Smith Micro, as well as for our competitors, and we expect new competitors to continue to enter the market. We not only compete with other software vendors for new customer contracts, in an increasingly competitive and fast-moving market we also compete to acquire technology and qualified personnel.

We believe that the principal competitive factors affecting the mobile software market include domain expertise, product features, usability, quality, price, customer service, speed to market and effective sales and marketing efforts. Although we believe that our products currently compete favorably with respect to these factors, there can be no assurance that we can maintain our competitive position against current and potential competitors. We also believe that the market for our software products has been and will continue to be characterized by significant price competition. A material reduction in the price we obtain for our products would negatively affect our profitability.

Many of our existing and potential customers have the resources to develop products internally that would compete directly with our product offerings. As such, these customers may opt to discontinue the purchase of our products in the future. Our future performance is therefore substantially dependent upon the extent to which existing customers elect to purchase software from us rather than designing and developing their own software.

Proprietary Rights and Licenses

We protect our intellectual property through a combination of patents, copyrights, trademarks, trade secrets, intellectual property laws, confidentiality procedures and contractual provisions. We have United States and foreign patents and pending patent applications that relate to various aspects of our products and technology. We have also registered, and applied for the registration of, U.S. and international trademarks, service marks, domain names, and copyrights. We will continue to apply for such protections in the future as we deem necessary to protect our intellectual property. We seek to avoid unauthorized use and disclosure of our proprietary intellectual property by requiring employees and third parties with access to our proprietary information to execute confidentiality agreements with us and by restricting access to our source code.

Our customers license our products and/or access our offerings pursuant to written agreements. Our customer agreements contain restrictions on reverse engineering, duplication, disclosure, and transfer of licensed software, and restrictions on access and use of software as a service ("SaaS").

Despite our efforts to protect our proprietary technology and our intellectual property rights, unauthorized parties may attempt to copy or obtain and use our technology to develop products and technology with the same functionality as our products and technology. Policing unauthorized use of our technology and intellectual property rights is difficult, and we may not be able to detect unauthorized use of our intellectual property rights or take effective steps to enforce our intellectual property rights.

Human Capital Resources

As of November 30, 2025, we had a total of 122 employees within the following departments: 81 in engineering and operations, 25 in sales and marketing, and 16 in management and administration. We are not subject to any collective bargaining agreement, and we believe that our relationships with our employees are good. We believe that our strength and competitive advantage is our people. We value the skills, strengths, and perspectives of our diverse team and foster a participatory workplace that enables people to get involved in making decisions. The Company provides various training and development opportunities to foster an environment in which employees are encouraged to be creative thinkers who are driven, focused, and interested and able to advance their knowledge and skills in ever-changing technology.

Recent Developments

Nasdaq Notification

On June 23, 2025, we received a letter from the Listing Qualifications Staff of Nasdaq indicating that as a result of the closing bid price of our Common Stock for the prior 30 consecutive business days having been below the $1.00 minimum bid price requirement for continued listing on The Nasdaq Capital Market pursuant to Nasdaq Listing Rules (the "Minimum Bid Price Requirement") we were not in compliance with the Minimum Bid Price Requirement (the "Minimum Bid Price Notice"). The Minimum Bid Price Notice has no immediate effect on the continued listing status of the Company's Common Stock on The Nasdaq Capital Market, and, therefore, the Company's listing remains fully effective.

Pursuant to Nasdaq Marketplace Rules, we have been provided an initial compliance period of 180 calendar days, or until December 22, 2025, to regain compliance with the Minimum Bid Price Requirement. If at any time before December 22, 2025, the closing bid price of our Common Stock is at least $1.00 per share for a minimum of ten consecutive business days, unless Nasdaq exercises its discretion to extend this ten-day period, Nasdaq will provide written confirmation stating that the Company has achieved compliance with the Minimum Bid Price Requirement. If our Common Stock does not regain compliance with the Minimum Bid Price Requirement during this initial 180-day compliance period, we may be eligible for an additional compliance period of 180 calendar days provided that (i) we otherwise satisfy Nasdaq's continued listing requirement for market value of publicly held shares and all other initial listing standards, other than the Minimum Bid Price Requirement; and (ii) we provide written notice to Nasdaq of our intention to cure the deficiency during the second grace period.

The Company has been monitoring and will continue to monitor the closing bid price of the Common Stock and assess its available options in order to regain compliance with the Minimum Bid Price Requirement and continue listing on The Nasdaq Capital Market. If the Company is not deemed in compliance before the expiration of the 180 calendar day compliance period, the Company intends to request an additional 180 calendar day compliance period in accordance with Nasdaq Listing Rule 5810(c)(3)(A)(ii). There can be no assurance that the Company will regain compliance with the Minimum Bid Price Requirement or will otherwise be in compliance with the other Nasdaq listing requirements.

July 2025 Registered Direct Offering

On July 17, 2025, we entered into the July SPA with certain institutional and accredited investors (the "July Purchasers") relating to the registered direct offering and sale of an aggregate of 1,612,903 shares of our Common Stock at an offering price of $0.93 per share of Common Stock and pursuant to which, in a concurrent private placement, the Company also sold July Warrants to purchase up to an aggregate of 1,612,903 shares of Common Stock, subject to adjustment. Each unregistered July Warrant had an original exercise price of $1.20 per share, was immediately exercisable and will expire July 18, 2030. The July Warrants contain a "full ratchet" anti-dilution adjustment, such that the exercise price will be adjusted if the Company issues shares of Common Stock (or Common Stock equivalents) at a price below the exercise price of the July Warrant. The number of shares issuable upon exercise of such shares will then be proportionately adjusted. Additionally, in the event of a reverse stock split, the exercise price of each July Warrant is subject to adjustment (along with a proportionate adjustment in the number of shares) if the market price of our Common Stock is less than the exercise price of the July Warrant (after giving effect to the split) during a period before and after the effective date of the reverse split.

In the event that July Warrants are adjusted to increase the number of July Warrant Shares issuable pursuant to the July Warrants, we are obligated to use our reasonable efforts to file one or more registration statements to register the resale of such additional shares of common stock. 1,612,903 shares of Common Stock underlying the July Warrants were registered on the Prior Registration Statement, which was declared effective August 15, 2025. As a result of subsequent equity issuances by the Company at prices below the exercise price of the July Warrants as originally issued, the number of shares underlying the July Warrants have been adjusted in accordance with their provisions, such that an additional 1,272,436 shares are registered pursuant to this prospectus for the July Warrants, which are currently exercisable at a price of $0.6708 per share.

The gross proceeds to the Company from the July Offering were approximately $1.5 million, before deducting offering expenses payable by the Company. The closing of the July Offering occurred on July 18, 2025.

September Debt Transactions

On September 11, 2025, the Company entered into the September 11 Note Purchase Agreements with certain accredited investors and Company officers pursuant to which they provided loans in an aggregate amount of approximately $800,000, in return for secured promissory notes and an accompanying unregistered September 11 Warrant, which is exercisable at any time beginning six (6) months following its original issuance, will expire five years from the initial exercise date and has an exercise price equal to the greater of the Market Price on September 11, 2025 or on the date of issuance.

On September 29, 2025, the Company entered into the September 29 Note Purchase Agreement with certain accredited investors pursuant to which they provided loans in an aggregate amount of $400,000, in return for secured promissory notes and an accompanying unregistered September 29 Warrant, which is exercisable at any time beginning six (6) months following its original issuance, will expire five years from the initial exercise date, and has an exercise price equal to the greater of $0.73 or the Market Price on the date of issuance.

Each of the September 11 and September 29 Warrants contains a "full-ratchet" anti-dilution adjustment, such that the exercise price will be adjusted if the Company issues Common Stock (or Common Stock equivalents) at a price below the exercise price of the applicable September 11 Warrant or September 29 Warrant. The number of shares issuable upon exercise of the September 11 or September 29 Warrants will then be proportionately adjusted. Additionally, in the event of a reverse stock split, the exercise price is subject to adjustment (along with a proportionate adjustment in the number of shares) if the market price of the Common Stock is less than the exercise price of the September 11 or September 29 Warrants (after giving effect to the split), respectively, during a period before and after the effective date of the reverse split. However, no adjustment to the exercise price (or proportional adjustment to the number of shares) shall be made under the "full-ratchet" adjustment or the anti-dilution adjustment, unless and until the Company has received approval from the Company's stockholders in accordance with Nasdaq Listing Rule 5635.

The Company anticipates that it will present the adjustment provisions in the September 11 and September 29 Warrants for approval by stockholders no later than its next annual meeting of stockholders.

An initial closing of the transactions contemplated by the September 11 Note Purchase Agreements occurred on September 11, 2025, with subsequent closings on September 17, 2025. An initial closing of the transactions contemplated by the September 29 Note Purchase Agreement occurred on September 30, 2025, with subsequent closings on October 1, 2025 and October 2, 2025. The gross proceeds to the Company from the September 11 Offering and the September 29 Offering were approximately $1.2 million before deducting transaction expenses payable by the Company.

November Registered Direct and Private Placement Transactions

On November 5, 2025, we entered into the RDO SPA with certain institutional and accredited investors relating to the registered direct offering and sale of an aggregate of 1,714,373 shares of Common Stock at an offering price of $0.6708 per share, and pursuant to which, in a concurrent private placement, the Company also sold the November Warrants to purchase up to an aggregate of 1,714,373 shares of Common Stock. Each November Warrant has an exercise price of $0.6708 per share, is exercisable at any time beginning six months following its original issuance and will expire five years from the initial exercise date.

On the same date, the Company separately entered into the Private Placement SPA with a trust for which the Company's Chief Executive Officer, William W. Smith, Jr., serves as co-trustee relating to a private placement transaction and sale of up to an aggregate of 2,236,136 unregistered shares of the Company's Common Stock at an offering price of $0.6708 per share of Common Stock and Private Placement Warrants to purchase up to an aggregate of 2,236,136 shares of Common Stock. Each Private Placement Warrant has an exercise price of $0.6708 per share, will be exercisable following such time as the Company has received approval from the Company's stockholders in accordance with Nasdaq Listing Rule 5635, and will expire five years from the initial exercise date.

The gross proceeds to the Company from the November RDO Offering and the November Private Placement Transaction were approximately $2.65 million, before deducting offering expenses payable by the Company. The closing of the November RDO Offering and November Private Placement Transaction occurred on or about November 6, 2025.

Risks of Investing

Investing in our Common Stock involves substantial risks. Potential investors are urged to read and consider the risk factors relating to an investment in our Common Stock set forth under "Risk Factors" in this prospectus as well as other information we include in this prospectus.

Corporate Information

The Company was incorporated in California in November 1983 and reincorporated in Delaware in June 1995. Our principal executive offices are located at 5800 Corporate Drive, Pittsburgh, Pennsylvania 15237 and our telephone number is (412) 837-5300. Our website address is www.smithmicro.com, and we make our filings with the U.S. Securities and Exchange Commission (the "SEC") available on the Investor Relations page of our website. Our common stock is traded on the Nasdaq Capital Market under the symbol "SMSI."

THE OFFERING

Issuer		Smith Micro Software, Inc.
Securities Offered by Selling Stockholders:		We registered the resale by the Selling Stockholders named in this prospectus, or their pledgees, assignees, distributees and successors-in-interest of an aggregate of 9,109,486 shares of Common Stock, which includes (i) 2,236,136 Shares of Common Stock issued pursuant to the November Private Placement Transaction, and up to (ii) 1,272,436 additional shares of Common Stock issuable upon the exercise of the July Warrants as a result of anti-dilution adjustments, (iii) 1,106,102 shares of Common Stock issuable upon the exercise of the September 11 Warrants, (iv) 544,303 shares of Common Stock issuable upon the exercise of the September 29 Warrants, (v) 2,236,136 shares of Common Stock issuable upon the exercise of the Private Placement Warrants, and (vi) 1,714,373 shares of Common Stock issuable upon the exercise of the November Warrants.
Shares of Common Stock Outstanding Prior to this Offering(1):		25,206,337 shares as of December 2, 2025
Shares of Common Stock Outstanding assuming exercise of all Warrants(1):		32,079,687 shares
Terms of the Offering		The Selling Stockholders will determine when and how they will sell the Common Stock offered in this prospectus, as described in the section of this prospectus titled "Plan of Distribution" on page 18.
Use of Proceeds:		The Selling Stockholders will receive the proceeds from the sale of the shares of Common Stock offered hereby. We will not receive any proceeds from the sale of the shares of Common Stock. However, we may receive proceeds in the aggregate amount of up to approximately $4.71 million if all the Warrants are exercised for cash. See "Use of Proceeds" on page 10 of this prospectus.
Dividend Policy:		We currently intend to retain any future earnings and do not anticipate paying cash dividends in the foreseeable future. Any future determination to pay cash dividends will be at the discretion of our board of directors and will depend upon our financial condition, operating results, capital requirements, any contractual restrictions and such other factors as our board of directors may deem appropriate.
Risk Factors:		Investing in our securities involves significant risks. See "Risk Factors" on page 9 of this prospectus and under similar headings in the documents incorporated by reference into this prospectus for a discussion of the factors you should carefully consider before deciding to invest in our securities.
Nasdaq Symbol:		Our shares of Common Stock are traded on the Nasdaq Capital Market under the symbol "SMSI."
Transfer Agent and Registrar		Computershare Trust Company, N.A.

(1)	The number of shares of Common Stock to be outstanding immediately after this offering is based on 25,206,337 shares of Common Stock issued and outstanding as of December 2, 2025, and exclude the following, all as of December 2, 2025:

•	30,411 shares of our Common Stock related to outstanding stock options issuable upon exercise (whether such options are currently vested or unvested), with a weighted-average exercise price of $5.96 per share;

•	9,994,951 shares of our Common Stock issuable upon the exercise of outstanding warrants, excluding the Warrants, with exercise prices ranging from $0.6708 to $21.20 per share; and

•	up to an aggregate of 2,683,626 shares of our Common Stock reserved for future grant or issuance under our Amended and Restated Omnibus Equity Incentive Plan (the "OEIP") and our Employee Stock Purchase Plan (the "ESPP").

Unless otherwise indicated, all information contained in this prospectus assumes no exercise of the outstanding options or warrants described above.

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus contains forward-looking statements within the meaning of the federal securities laws. We make such forward-looking statements pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 and other federal securities laws. You can identify forward-looking statements by the use of the words "believe," "expect," "anticipate," "intend," "estimate," "project," "will," "should," "may," "plan," "assume" and other expressions that predict or indicate future events and trends and that do not relate to historical matters. You should not unduly rely on forward-looking statements because they involve known and unknown risks, uncertainties and other factors, some of which are beyond our control. Forward-looking statements also include the assumptions underlying or relating to any of the foregoing statements. These statements are not guarantees of future performance and are subject to risks, uncertainties, and assumptions that are difficult to predict. Therefore, our actual results could differ materially from those expressed or implied in any forward-looking statements as a result of various factors. Such factors include, but are not limited to, the following:

•	our customer concentration, given that the majority of our sales currently depend on a few large customer relationships;

•	our ability to establish and maintain strategic relationships with our customers and mobile device manufacturers, their ability to attract customers, and their willingness to promote our products;

•	our ability and/or customers' ability to distribute our mobile software applications to their end users through third party mobile software application stores, which we do not control;

•	our dependency upon effective operation with operating systems, devices, networks and standards that we do not control and on our continued relationships with mobile operating system providers, device manufacturers and mobile software application stores on commercially reasonable terms or at all;

•	our ability to hire and retain key personnel;

•	the possibility of security and privacy breaches in our systems and in the third-party software and/or systems that we use, damaging customer relations and inhibiting our ability to grow;

•	interruptions or delays in the services we provide from our data center hosting facilities that could harm our business;

•	the existence of undetected software defects in our products and our failure to resolve detected defects in a timely manner;

•	our ability to remain a going concern;

•	our ability to raise additional capital and the risk of such capital not being available to us at commercially reasonable terms or at all;

•	our ability to be profitable;

•	current and potential future negative impacts from cost reduction efforts we have taken and may in the future undertake;

•	changes in our operating income due to shifts in our sales mix and variability in our operating expenses;

•	our current client concentration within the vertical wireless carrier market, and the potential impact to our business resulting from changes within this vertical market, or failure to penetrate new markets;

•	rapid technological evolution and resulting changes in demand for our products from our key customers and their end users;

•	potential adverse effects relating to our ability to realize goodwill and net intangible assets, as well as potential dilution concerns relating to currently outstanding warrants;

•	intense competition in our industry and the core vertical markets in which we operate, and our ability to successfully compete;

•	the risks inherent with international operations;

•	the impact of evolving information security and data privacy laws on our business and industry;

•	the impact of governmental regulations on our and our customers' business and industry;

•	our ability to protect our intellectual property and our ability to operate our business without infringing on the rights of others;

•	the risk of being delisted from Nasdaq if we continue to fail to meet any of its applicable listing requirements;

•	our ability to assimilate acquisitions without diverting management attention and impacting current operations;

•	failure to realize the expected benefits of prior acquisitions;

•	the availability of third-party intellectual property and licenses needed for our operations and our products and services on commercially reasonable terms, or at all; and

•	the difficulty of predicting our quarterly revenues and operating results and the chance of such revenues and results falling below analyst or investor expectations, which could cause the price of our Common Stock to fall.

These forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause our actual results to be materially different from the anticipated future results, performance or achievements expressed or implied by any forward-looking statements, including the factors described under the heading "Risk Factors" in this prospectus, under similar headings in the documents incorporated by reference into this prospectus, and the risk factors and cautionary statements described in other documents that we file from time to time with the SEC, specifically under the heading "Item 1A: Risk Factors" and elsewhere in our most recent Annual Report on Form 10-K for the year ended December 31, 2024 that was filed with the SEC on March 12, 2025, and any of our subsequent Quarterly Reports on Form 10-Q and Current Reports on Form 8-K. You should evaluate all forward-looking statements made in this prospectus, including the documents we incorporate by reference, in the context of these risks, uncertainties and other factors.

All forward-looking statements in this prospectus, including the documents we incorporate by reference, apply only as of the date made and are expressly qualified in their entirety by the cautionary statements included in this prospectus. We undertake no obligation to publicly update or revise any forward-looking statements to reflect subsequent events or circumstances.

In addition, statements that "we believe" and similar statements reflect our beliefs and opinions on the relevant subject. These statements are based upon information available to us as of the date of this prospectus, and while we believe such information forms a reasonable basis for such statements, such information may be limited or incomplete, and our statements should not be read to indicate that we have conducted an exhaustive inquiry into, or review of, all potentially available relevant information. These statements are inherently uncertain, and you are cautioned not to unduly rely upon these statements.

RISK FACTORS

Investing in our securities involves risk. Before making an investment decision, you should carefully consider the risks described in our most recent Annual Report on Form 10-K, and any updates to our risk factors in our Quarterly Reports on Form 10-Q, together with all of the other information appearing in or incorporated by reference into this prospectus, in light of your particular investment objectives and financial circumstances. Our business, financial condition or results of operations could be materially adversely affected by any of these risks. The trading price of our securities could decline due to any of these risks, and you may lose all or part of your investment. Additional risks and uncertainties not presently known to us or that we currently deem immaterial also may materially and adversely affect our business, financial condition and results of operations. See the section of this prospectus titled "Where You Can Find More Information."

DIVIDEND POLICY

We currently intend to retain any future earnings and do not anticipate paying cash dividends in the foreseeable future. Any future determination to pay cash dividends will be at the discretion of our board of directors and will depend upon our financial condition, operating results, capital requirements, any contractual restrictions and such other factors as our board of directors may deem appropriate.

DILUTION

The offering of the shares of Common Stock and shares of Common Stock issuable upon exercise of the Warrants by the Selling Stockholders on a continuous or delayed basis in the future will not result in a change to the net tangible book value per share of our Common Stock before and after the distribution of such shares of Common Stock by the Selling Stockholders. However, purchasers of such shares of Common Stock from the Selling Stockholders will experience dilution to the extent of the difference between the amount per share paid and the net tangible book value per share of our Common Stock at the time of purchase.

As of September 30, 2025, our historical net tangible book value was approximately $0.1 million, or $0.01 per share, based on 21,477,754 shares of our Common Stock outstanding as of that date. The net tangible book value per share as of September 30, 2025 does not take into consideration the net proceeds we received or the 3,950,509 shares of Common Stock that we issued pursuant to each of the offerings referenced above. If the net proceeds were received as September 30, 2025 and those 3,950,509 shares were outstanding as of that date, then the net tangible book value would have been $0.10 per share as of that date.

To the extent the Warrants are exercised, any options or warrants outstanding as of September 30, 2025 are exercised, or new options, restricted stock awards, restricted stock units or performance stock units are issued under our equity incentive plans, shares are purchased pursuant to our employee stock purchase plan, or we otherwise issue additional shares of Common Stock in the future, purchasers of our Common Stock from the Selling Stockholders may experience further dilution. In addition, we may choose to raise additional capital due to market conditions or strategic considerations, even if we believe we have sufficient funds for our current or future operating plans. To the extent that additional capital is raised through the sale of equity or debt securities, the issuance of these securities could result in further dilution to our stockholders.

USE OF PROCEEDS

This prospectus relates to the resale by the Selling Stockholders of up to 9,109,486 shares of Common Stock. The Selling Stockholders will receive all the proceeds from this offering. We will not receive any of the proceeds from the sale or other disposition of our Common Stock by the Selling Stockholders pursuant to this prospectus. However, we may receive proceeds in the aggregate of up to approximately $4.71 million if all the Warrants are exercised for cash, based on the current per share exercise price of the Warrants. We cannot predict when, at what price, or if, the Warrants will be exercised. It is possible that the exercise price of certain of the Warrants may be adjusted in a downward fashion or that the Warrants may expire and may never be exercised for cash.

We intend to use any proceeds from the exercise of the Warrants for general corporate purposes and working capital. We may temporarily invest the net proceeds, if any, in short-term, interest-bearing instruments or other investment-grade securities. We have not determined the amount of net proceeds, if any, to be used specifically for such purposes. As a result, management will retain broad discretion over the allocation of any net proceeds it receives as a result of the exercise of the Warrants.

DETERMINATION OF OFFERING PRICE

We cannot currently determine the price or prices at which the shares of our Common Stock may be sold by the Selling Stockholders under this prospectus.

THE SELLING STOCKHOLDERS

The shares of Common Stock being offered by the Selling Stockholders are those shares of Common Stock issued pursuant to the November Private Placement Transaction, and those shares issuable to the Selling Stockholders upon exercise of the Warrants issued in the Offerings. We registered the shares of Common Stock issued pursuant to the November 2025 Private Placement Transaction and shares of Common Stock issuable upon exercise of the Warrants in order to permit the Selling Stockholders to offer the Common Stock for resale from time to time.

Except for (i) ownership of Warrants, (ii) participation in the July 2025 Offering, (iii) participation in the September 11 Offering and September 29 Offering, (iv) participation in the registered direct offering and concurrent private placement in each of October 2024 and November 2025, (v) participation in a registered direct offering and concurrent private placement in May 2024, (vi) prior Placement Agency Agreements and engagement by the Company as a financial advisor and/or placement agent in connection with prior capital raising efforts (with respect to Roth Capital Partners, LLC) (vii) serving as an executive officer of the Company (with respect to Timothy C. Huffmyer), (viii) serving as an executive officer and director of the Company (with respect to William W. Smith, Jr.) and (ix) a consulting agreement to which the Company is a party (with respect to Brian G. Swift, the sole manager of BGSwiftRoth LLC), the Selling Stockholders have not had any material relationship with us within the past three years.

The table below lists the Selling Stockholders and other information regarding the beneficial ownership (as determined under Section 13(d) of the Exchange Act of 1934, as amended, and the rules and regulations thereunder) of the shares of Common Stock held by each of the Selling Stockholders. The second column lists the number of shares of Common Stock beneficially owned by each Selling Stockholder, based on its beneficial ownership of the Warrants and our Common Stock, as of December 2, 2025, assuming exercise of all Warrants held by each such Selling Stockholder on that date at currently applicable exercise prices, without regard to any limitations on exercise. The third column lists the shares of Common Stock being offered under this prospectus by the Selling Stockholders.

In accordance with the terms of each of the applicable purchase agreements for the Offerings described herein, this prospectus generally covers the resale of the number of shares of Common Stock issued pursuant to the November Private Placement Transaction as well as the maximum number of shares of Common Stock currently issuable upon exercise of the Warrants, determined as if the outstanding Warrants were exercised in full as of the trading day immediately preceding the date of the registration statement of which this prospectus forms a part was initially filed with the SEC, without regard to any limitations on the exercise of the Warrants and without regard to any potential adjustments in the number of shares of Common Stock issuable pursuant to the adjustment provisions contained in the Warrant (as applicable). The fourth column assumes the sale of all the shares of Common Stock offered by the Selling Stockholders pursuant to this prospectus.

Under the terms of the Warrants, a Selling Stockholder may not exercise any portion of the Warrants to the extent such exercise would cause the Selling Stockholder (together with the Selling Stockholder's affiliates, and any other persons acting as a group together with the Selling Stockholder or the Selling Stockholder's affiliates) to own more than 4.99% (or, upon election by the Selling Stockholder prior to the issuance of any Warrants 9.99%) of the Company's outstanding Common Stock after giving effect to the issuance of shares of Common Stock issuable upon exercise of such Warrant. A Selling Stockholder may decrease, or upon at least 61 days' prior notice to the Company, increase such limitation, but, in no event shall such beneficial ownership limitation exceed 9.99%. Pursuant to the Private Placement Purchase Agreement, a holder's right to exercise the Private Placement Warrants, and the Company's ability to issue shares upon exercise thereof, is subject to certain limitations set forth in the Private Placement SPA pursuant to which the Private Placement Warrants were issued, including a limit on the ability to exercise the Private Placement Warrants until the time, if any, that the Company's stockholders have approved the exercise thereof, in accordance with Nasdaq listing standards. Additionally, pursuant to the terms of the September 11 and September 29 Warrants, no adjustment to the exercise price (or proportional adjustment to the number of shares) shall be made under each such warrant's "full-ratchet" adjustment or reverse stock split-related anti-dilution adjustment, unless and until the Company has received approval from the Company's stockholders in accordance with the rules and regulations of Nasdaq. The Company has agreed to seek stockholder approval of these matters at its annual meeting to be held in June 2026.

Effective September 16, 2025, Newtown Road 130 Holdings LLC ("Newtown"), of which John P. Gutfreund is the Managing Member, assigned the July Warrants held by Newtown and all rights evidenced thereby to John P. Gutfreund, individually. The table below is being amended and supplemented to (i) remove Newtown as a Selling Stockholder, and (ii) add John P. Gutfreund as a Selling Stockholder. This does not impact any other selling stockholders set forth in the table appearing under the heading "Selling Stockholders" in this prospectus.

The Selling Stockholders may sell all, some or none of their shares of Common Stock in this offering. See "Plan of Distribution."

Name of Selling Stockholder		Number of Shares of Common Stock Beneficially Owned Prior to Offering (1)				Maximum Number of Shares of Common Stock to be Sold Pursuant to This Prospectus (2)				Number of Shares of Common Stock Beneficially Owned After Offering (3)				Percentage of Beneficial Ownership After Offering (3)
Iroquois Master Fund Ltd.(4)			968,108	(5)			212,073				756,035				3.0	%
Iroquois Capital Investment Group LLC(6)			1,832,486	(7)			424,145				1,408,341				5.6	%
John P. Gutfreund(8)			1,813,261	(9)			636,218				1,177,043				4.7	%
Roy L. Rogers 2020 Dynasty Trust(10)			573,375	(11)			142,343				431,032				1.7	%
Roy and Ruth Rogers Unitrust, UTD 9/29/89(12)			321,805	(13)			142,343				179,462				0.7	%
Roy L. Rogers Survivor's Trust(14)			665,496	(15)			142,343				523,153				2.1	%
Howard Miller(16)			218,232	(17)			143,694				74,538				0.3	%
BGSwiftRoth LLC(18)			72,315	(19)			68,315				4,000				0.0	%
Jon D and Linda W Gruber Trust(20)			650,645	(21)			427,031				223,614				0.9	%
Unterberg Legacy Capital, LLC(22)			492,422	(23)			74,538				417,884				1.7	%
Proactive Capital Partners, LP(24)			149,076	(25)			74,538				74,538				0.3	%
TEC Opportunities Fund I LP(26)			396,114	(27)			223,614				172,500				0.7	%
Anson Investments Master Fund LP(28)			2,828,820	(29)			566,488				2,262,332				9.0	%
Anson East Master Fund LP(30)			599,091	(31)			178,891				420,200				1.7	%
Timothy C. Huffmyer(32)			270,522	(33)			119,760				150,762				0.6	%
William W. Smith, Jr. and Dieva L. Smith, as Co-Trustees UA 11/30/2021, Smith Living Trust(34)			11,390,553	(35)			5,458,614				5,931,939				23.5	%
Roth Capital Partners, LLC(36)			302,776	(37)			74,538				228,238				0.9	%

(1)

This table and the information in the notes below are based on information supplied by the selling stockholders and upon 25,206,337 shares of Common Stock issued and outstanding as of December 2, 2025 (prior to any deemed issuance of any shares of Common Stock issuable upon exercise of the Warrants). The Warrants contain certain beneficial ownership limitations, which provide that a holder will not have the right to exercise any portion of its Warrants if such holder (together with the holder's affiliates, and any other persons acting as a group together with the holder or the holder's affiliates) would beneficially own in excess of 4.99% (or, upon election by the holder prior to the issuance of any Warrants 9.99%) of the Company's outstanding Common Stock after giving effect to the issuance of shares of Common Stock issuable upon exercise of such Warrants; provided that a holder may decrease, or upon at least 61 days' prior notice to the Company, increase such beneficial ownership limitation. In no event shall such beneficial ownership limitation with respect to the Warrants exceed 9.99%. Additionally, the Selling Stockholders may have acquired shares of Common Stock on the open market without the Company's knowledge that may not be reflected. With respect to the Private Placement Warrants, a holder's right to exercise the Private Placement Warrants, and the Company's ability to issue shares upon exercise thereof, is subject to certain limitations set forth in the Private Placement SPA pursuant to which the Private Placement Warrants were issued, including a limit on the ability to exercise the Private Placement Warrants until the time, if any, that the Company's stockholders have approved the exercise thereof, in accordance with Nasdaq listing standards. Additionally, pursuant to the terms of the September 11 and September 29 Warrants, no adjustment to the exercise price (or proportional adjustment to the number of shares) shall be made under each such warrant's "full-ratchet" adjustment or reverse stock split-related anti-dilution adjustment, unless and until the Company has received approval from the Company's stockholders in accordance with the rules and regulations of Nasdaq.

(2)

Represents shares of Common Stock (i) purchased in the November Private Placement Transaction and (ii) underlying the Warrants issued to the Selling Stockholders in connection with the Offerings and offered hereby. The actual number of shares of Common Stock offered hereby and included in the registration statement of which this prospectus forms a part includes, in accordance with Rule 416 under the Securities Act, such indeterminate number of additional shares of our Common Stock as may become issuable in connection with any proportionate adjustment for any stock splits, stock combinations, stock dividends, recapitalizations or similar events with respect to the Common Stock.

(3)

We do not know when or in what amounts a Selling Stockholder may offer shares of our Common Stock for sale. The Selling Stockholders might not sell any or might sell all the shares of our Common Stock offered by this prospectus. Because the Selling Stockholders may offer all or some of the shares of our Common Stock pursuant to this offering, and because there are currently no agreements, arrangements or understandings with respect to the sale of any of the shares of our Common Stock, we cannot estimate the number of shares of our Common Stock that will be held by the Selling Stockholders after completion of the offering. However, for purposes of this table, we have assumed that, after completion of the offering, none of the shares of our Common Stock covered by this prospectus will be held by the Selling Stockholders. Further, this table does not reflect the application of the 4.99% (or 9.99%, as applicable) beneficial ownership limitations to which the Selling Stockholders are subject in connection with the exercise of the Warrants or, with respect to the Private Placement Warrants, the application of the limitations set forth in the Private Placement SPA pursuant to which the Private Placement Warrants were issued, including a limit on the number of shares that may be issued until the time, if any, that the Company's stockholders have approved the exercise thereof in accordance with Nasdaq listing standards.

(4)

Iroquois Capital Management, LLC is the investment manager of Iroquois Master Fund Ltd. Iroquois Capital Management, LLC has voting control and investment discretion over securities held by Iroquois Master Fund. As Managing Members of Iroquois Capital Management, LLC, Richard Abbe and Kimberly Page make voting and investment decisions on behalf of Iroquois Capital Management, LLC in its capacity as investment manager to Iroquois Master Fund Ltd. As a result of the foregoing, Mr. Abbe and Mrs. Page may be deemed to have beneficial ownership (as determined under Section 13(d) of the Securities Exchange Act of 1934, as amended) of the securities held by Iroquois Capital Management and Iroquois Master Fund.

(5)

These shares are comprised of 968,108 shares of Common Stock issuable upon the exercise of warrants held by the Selling Stockholder, of which 480,890 shares of Common Stock are issuable upon the exercise of July Warrants issued in the July Offering. With respect to the July Warrants held by the Selling Stockholder, when originally issued, such July Warrants were exercisable for 268,817 shares of Common Stock. As a result of subsequent issuances of securities by the Company, the July Warrants have been subsequently adjusted pursuant to a "full-ratchet" anti-dilution provision, with the result that the Selling Stockholder's July Warrants are exercisable for an additional 212,073 shares of Common Stock. Each of the warrants contain a beneficial ownership limitation that provides that a holder will not have the right to exercise any portion of its warrants if such holder (together with the holder's affiliates, and any other persons acting as a group together with the holder or the holder's affiliates) would beneficially own in excess of 4.99% (or, upon election by the holder prior to the issuance of any warrants 9.99%) of the Company's outstanding Common Stock after giving effect to the issuance of shares of Common Stock issuable upon exercise of such warrants; provided that a holder may decrease, or upon at least 61 days' prior notice to the Company, increase such beneficial ownership limitation. In no event shall such beneficial ownership limitation exceed 9.99%.

(6)

Richard Abbe is the managing member of Iroquois Capital Investment Group LLC. Mr. Abbe has voting control and investment discretion over securities held by Iroquois Capital Investment Group LLC. As such, Mr. Abbe may be deemed to be the beneficial owner (as determined under Section 13(d) of the Securities Exchange Act of 1934, as amended) of the securities held by Iroquois Capital Investment Group LLC.

(7)

These shares are comprised of 1,832,486 shares of Common Stock issuable upon the exercise of warrants held by the Selling Stockholder, of which 961,779 shares of Common Stock are issuable upon the exercise of July Warrants issued in the July Offering. With respect to the July Warrants held by the Selling Stockholder, when originally issued, such July Warrants were exercisable for 537,634 shares of Common Stock. As a result of subsequent issuances of securities by the Company, the July Warrants have been subsequently adjusted pursuant to a "full-ratchet" anti-dilution provision, with the result that the Selling Stockholder's July Warrants are exercisable for an additional 424,145 shares of Common Stock. Each of the warrants contain a beneficial ownership limitation that provides that a holder will not have the right to exercise any portion of its warrants if such holder (together with the holder's affiliates, and any other persons acting as a group together with the holder or the holder's affiliates) would beneficially own in excess of 4.99% (or, upon election by the holder prior to the issuance of any warrants 9.99%) of the Company's outstanding Common Stock after giving effect to the issuance of shares of Common Stock issuable upon exercise of such warrants; provided that a holder may decrease, or upon at least 61 days' prior notice to the Company, increase such beneficial ownership limitation. In no event shall such beneficial ownership limitation exceed 9.99%.

(8)

Amounts reflect shares owned by Mr. Gutfreund, individually. Amounts exclude shares owned by Newtown Road 130 Holdings LLC of which John P. Gutfreund is the Managing Member and over which shares Mr. Gutfreund also has voting and dispositive power. The address for Mr. Gutfreund is 767 5th Avenue, 44th Floor, New York, NY 10153.

(9)

These shares are comprised of 1,813,261 shares of Common Stock issuable upon the exercise of warrants held by the Selling Stockholder, of which 1,442,670 shares of Common Stock are issuable upon the exercise of July Warrants issued in the July Offering. The July Warrants held by the Selling Stockholder were originally issued to Newtown Road 130 Holdings LLC, of which the Selling Stockholder is the Managing Member. Effective September 16, 2025, such July Warrants and all rights evidenced thereby were assigned from Newtown Road 130 Holdings LLC to the Selling Stockholder. With respect to the July Warrants held by the Selling Stockholder, when originally issued, such July Warrants were exercisable for 806,452 shares of Common Stock. As a result of subsequent issuances of securities by the Company, the July Warrants have been subsequently adjusted pursuant to a "full-ratchet" anti-dilution provision, with the result that the Selling Stockholder's July Warrants are exercisable for an additional 636,218 shares of Common Stock. Each of the warrants contain a beneficial ownership limitation that provides that a holder will not have the right to exercise any portion of its warrants if such holder (together with the holder's affiliates, and any other persons acting as a group together with the holder or the holder's affiliates) would beneficially own in excess of 4.99% (or, upon election by the holder prior to the issuance of any warrants 9.99%) of the Company's outstanding Common Stock after giving effect to the issuance of shares of Common Stock issuable upon exercise of such warrants; provided that a holder may decrease, or upon at least 61 days' prior notice to the Company, increase such beneficial ownership limitation. In no event shall such beneficial ownership limitation exceed 9.99%.

(10)	Roy L. Rogers is the trustee of the Roy L. Rogers 2020 Dynasty Trust and holds sole voting and dispositive power over the shares held by the trust.

(11)

These shares are comprised of (i) 259,359 shares of Common Stock and (ii) 314,016 shares of Common Stock issuable upon the exercise of warrants held by the Selling Stockholder, including 67,805 shares of Common Stock issuable upon the exercise of September 29 Warrants and 74,538 shares of Common Stock issuable upon the exercise of November Warrants. Each of the warrants contain a beneficial ownership limitation that provides that a holder will not have the right to exercise any portion of its warrants if such holder (together with the holder's affiliates, and any other persons acting as a group together with the holder or the holder's affiliates) would beneficially own in excess of 4.99% (or, upon election by the holder prior to the issuance of any warrants 9.99%) of the Company's outstanding Common Stock after giving effect to the issuance of shares of Common Stock issuable upon exercise of such warrants; provided that a holder may decrease, or upon at least 61 days' prior notice to the Company, increase such beneficial ownership limitation. In no event shall such beneficial ownership limitation exceed 9.99%.

(12)	Roy L. Rogers is the trustee of the Roy and Ruth Rogers Unitrust, UTD 9/29/89 and holds sole voting and dispositive power over the shares held by the trust.

(13)

These shares are comprised of (i) 136,544 shares of Common Stock and (ii) 185,261 shares of Common Stock issuable upon the exercise of warrants held by the Selling Stockholder, including 67,805 shares of Common Stock issuable upon the exercise of September 29 Warrants and 74,538 shares of Common Stock issuable upon the exercise of November Warrants. Each of the warrants contain a beneficial ownership limitation that provides that a holder will not have the right to exercise any portion of its warrants if such holder (together with the holder's affiliates, and any other persons acting as a group together with the holder or the holder's affiliates) would beneficially own in excess of 4.99% (or, upon election by the holder prior to the issuance of any warrants 9.99%) of the Company's outstanding Common Stock after giving effect to the issuance of shares of Common Stock issuable upon exercise of such warrants; provided that a holder may decrease, or upon at least 61 days' prior notice to the Company, increase such beneficial ownership limitation. In no event shall such beneficial ownership limitation exceed 9.99%.

(14)	Roy L. Rogers is the trustee of the Roy L. Rogers Survivor's Trust and holds sole voting and dispositive power over the shares held by the trust

(15)

These shares are comprised of (i) 351,480 shares of Common Stock and (ii) 314,016 shares of Common Stock issuable upon the exercise of warrants held by the Selling Stockholder, including 67,805 shares of Common Stock issuable upon the exercise of September 29 Warrants and 74,538 shares of Common Stock issuable upon the exercise of November Warrants. Each of the warrants contain a beneficial ownership limitation that provides that a holder will not have the right to exercise any portion of its warrants if such holder (together with the holder's affiliates, and any other persons acting as a group together with the holder or the holder's affiliates) would beneficially own in excess of 4.99% (or, upon election by the holder prior to the issuance of any warrants 9.99%) of the Company's outstanding Common Stock after giving effect to the issuance of shares of Common Stock issuable upon exercise of such warrants; provided that a holder may decrease, or upon at least 61 days' prior notice to the Company, increase such beneficial ownership limitation. In no event shall such beneficial ownership limitation exceed 9.99%.

(16)

Howard Miller owns these shares individually and holds sole voting and dispositive power over the shares. Amounts exclude shares held by Howard Miller with his spouse Barbara J. Miller as joint tenants with a right of survivorship, over which equal voting and dispositive power is held by Howard Miller and his spouse.

(17)

These shares are comprised of (i) 74,538 shares of Common Stock and (ii) 143,694 shares of Common Stock issuable upon the exercise of warrants held by the Selling Stockholder, including 69,156 shares of Common Stock issuable upon the exercise of September 29 Warrants and 74,538 shares of Common Stock issuable upon the exercise of November Warrants. Each of the warrants contain a beneficial ownership limitation that provides that a holder will not have the right to exercise any portion of its warrants if such holder (together with the holder's affiliates, and any other persons acting as a group together with the holder or the holder's affiliates) would beneficially own in excess of 4.99% (or, upon election by the holder prior to the issuance of any warrants 9.99%) of the Company's outstanding Common Stock after giving effect to the issuance of shares of Common Stock issuable upon exercise of such warrants; provided that a holder may decrease, or upon at least 61 days' prior notice to the Company, increase such beneficial ownership limitation. In no event shall such beneficial ownership limitation exceed 9.99%.

(18)

Brian G. Swift is the sole manager of BGSwiftRoth LLC and has sole voting and dispositive power over the shares held by the Selling Stockholder. Amounts exclude shares owned by the Brian G. Swift and Suzanne B. Swift Rev Liv Trust U/A OTD 3/13/91, of which Brian G. Swift and Suzanne B. Swift are co-trustees and over which shares Brian G. Swift and Suzanne B. Swift have shared voting and dispositive power.

(19)

These shares are comprised of (i) 4,000 shares of Common Stock and (ii) 68,315 shares of Common Stock issuable upon the exercise of September 29 Warrants. Each of the warrants contain a beneficial ownership limitation that provides that a holder will not have the right to exercise any portion of its warrants if such holder (together with the holder's affiliates, and any other persons acting as a group together with the holder or the holder's affiliates) would beneficially own in excess of 4.99% (or, upon election by the holder prior to the issuance of any warrants 9.99%) of the Company's outstanding Common Stock after giving effect to the issuance of shares of Common Stock issuable upon exercise of such warrants; provided that a holder may decrease, or upon at least 61 days' prior notice to the Company, increase such beneficial ownership limitation. In no event shall such beneficial ownership limitation exceed 9.99%.

(20)

The securities are directly held by the Jon D and Linda W Gruber Trust ("Gruber Trust") and may be deemed to be beneficially owned by Jon D. Gruber, as Trustee. Voting and investment power over the shares held by Jon D and Linda W Gruber Trust is held by Jon D. Gruber, as the trustee of Jon D and Linda W Gruber Trust. The address of the Gruber Trust is 300 Tamal Plaza, Ste. 215, Corte Madera, CA 94925.

(21)

These shares are comprised of (i) 223,614 shares of Common Stock and (ii) 427,031 shares of Common Stock issuable upon the exercise of warrants held by the Selling Stockholder, including 203,417 shares of Common Stock issuable upon the exercise of September 29 Warrants and 223,614 shares of Common Stock issuable upon the exercise of November Warrants. Each of the warrants contain a beneficial ownership limitation that provides that a holder will not have the right to exercise any portion of its warrants if such holder (together with the holder's affiliates, and any other persons acting as a group together with the holder or the holder's affiliates) would beneficially own in excess of 4.99% (or, upon election by the holder prior to the issuance of any warrants 9.99%) of the Company's outstanding Common Stock after giving effect to the issuance of shares of Common Stock issuable upon exercise of such warrants; provided that a holder may decrease, or upon at least 61 days' prior notice to the Company, increase such beneficial ownership limitation. In no event shall such beneficial ownership limitation exceed 9.99%.

(22)

The shares are directly owned by Unterberg Legacy Capital, LLC ("Unterberg"). Andrew Arno, a director of the Company, is a limited partner of Unterberg. James Satloff, the managing member of Unterberg, may be deemed to beneficially own the shares of Common Stock owned by Unterberg. The address for Unterberg and Mr. Satloff is 10 Gracie Square, Apt. 9E, New York, NY 10028.

(23)

These shares are comprised of (i) 246,211 shares of Common Stock and (ii) 246,211 shares of Common Stock issuable upon the exercise of warrants held by the Selling Stockholder, including 74,538 shares of Common Stock issuable upon the exercise of November Warrants. Each of the warrants contain a beneficial ownership limitation that provides that a holder will not have the right to exercise any portion of its warrants if such holder (together with the holder's affiliates, and any other persons acting as a group together with the holder or the holder's affiliates) would beneficially own in excess of 4.99% (or, upon election by the holder prior to the issuance of any warrants 9.99%) of the Company's outstanding Common Stock after giving effect to the issuance of shares of Common Stock issuable upon exercise of such warrants; provided that a holder may decrease, or upon at least 61 days' prior notice to the Company, increase such beneficial ownership limitation. In no event shall such beneficial ownership limitation exceed 9.99%.

(24)

The shares of Common Stock are directly owned by Proactive Capital Partners, LP ("Proactive Capital"). Jeffrey S. Ramson is the general partner and manager of Proactive Capital and has voting and investment control over the securities held by Proactive Capital and may be deemed to beneficially own the shares of common stock owned by Proactive Capital. The address for Proactive Capital and Mr. Ramson is 110 East 59th Street, 23rd Floor, New York, NY 10022.

(25)

These shares are comprised of (i) 74,538 shares of Common Stock and (ii) 74,538 shares of Common Stock issuable upon the exercise of November Warrants held by the Selling Stockholder. Each of the warrants contain a beneficial ownership limitation that provides that a holder will not have the right to exercise any portion of its warrants if such holder (together with the holder's affiliates, and any other persons acting as a group together with the holder or the holder's affiliates) would beneficially own in excess of 4.99% (or, upon election by the holder prior to the issuance of any warrants 9.99%) of the Company's outstanding Common Stock after giving effect to the issuance of shares of Common Stock issuable upon exercise of such warrants; provided that a holder may decrease, or upon at least 61 days' prior notice to the Company, increase such beneficial ownership limitation. In no event shall such beneficial ownership limitation exceed 9.99%.

(26)	The sole general partner of TEC Opportunities Fund I LP is TEC Advisors LLC. The manager of TEC Advisors LLC is Trojan Eagles Capital LLC. Michael Venezia is the sole manager of Trojan Eagles Capital LLC. The address of TEC Opportunities Fund I LP is 164 W 79th Street, Apt 3C, New York, NY 10024.

(27)

These shares are comprised of (i) 172,500 shares of Common Stock and (ii) 223,614 shares of Common Stock issuable upon the exercise of November Warrants held by the Selling Stockholder. Each of the warrants contain a beneficial ownership limitation that provides that a holder will not have the right to exercise any portion of its warrants if such holder (together with the holder's affiliates, and any other persons acting as a group together with the holder or the holder's affiliates) would beneficially own in excess of 4.99% (or, upon election by the holder prior to the issuance of any warrants 9.99%) of the Company's outstanding Common Stock after giving effect to the issuance of shares of Common Stock issuable upon exercise of such warrants; provided that a holder may decrease, or upon at least 61 days' prior notice to the Company, increase such beneficial ownership limitation. In no event shall such beneficial ownership limitation exceed 9.99%.

(28)

Advisers of Anson Investments Master Fund LP ("Anson Investments"), hold voting and dispositive power over the Common Stock held by Anson Investments. Tony Moore is the managing member of Anson Management GP LLC, which is the general partner of Anson Funds Management LP. Moez Kassam and Amin Nathoo are directors of Anson Advisors Inc. Mr. Moore, Mr. Kassam and Mr. Nathoo each disclaim beneficial ownership of these shares of Common Stock except to the extent of their pecuniary interest therein. The principal business address of Anson is Maples Corporate Services Limited, PO Box 309, Ugland House, Grand Cayman KY1-1104, Cayman Islands.

(29)

These shares are comprised of 2,828,820 shares of Common Stock issuable upon the exercise of warrants held by the Selling Stockholder, including 566,488 shares of Common Stock issuable upon the exercise of November Warrants. Each of the warrants contain a beneficial ownership limitation that provides that a holder will not have the right to exercise any portion of its warrants if such holder (together with the holder's affiliates, and any other persons acting as a group together with the holder or the holder's affiliates) would beneficially own in excess of 4.99% (or, upon election by the holder prior to the issuance of any warrants 9.99%) of the Company's outstanding Common Stock after giving effect to the issuance of shares of Common Stock issuable upon exercise of such warrants; provided that a holder may decrease, or upon at least 61 days' prior notice to the Company, increase such beneficial ownership limitation. In no event shall such beneficial ownership limitation exceed 9.99%.

(30)

Advisers of Anson East Master Fund LP ("Anson East"), hold voting and dispositive power over the Common Stock held by Anson East. Tony Moore is the managing member of Anson Management GP LLC, which is the general partner of Anson Funds Management LP. Moez Kassam and Amin Nathoo are directors of Anson Advisors Inc. Mr. Moore, Mr. Kassam and Mr. Nathoo each disclaim beneficial ownership of these shares of Common Stock except to the extent of their pecuniary interest therein. The principal business address of Anson East is Maples Corporate Services Limited, PO Box 309, Ugland House, Grand Cayman KY1-1104, Cayman Islands.

(31)

These shares are comprised of 599,091 shares of Common Stock issuable upon the exercise of warrants held by the Selling Stockholder, including 178,891 shares of Common Stock issuable upon the exercise of November Warrants. Each of the warrants contain a beneficial ownership limitation that provides that a holder will not have the right to exercise any portion of its warrants if such holder (together with the holder's affiliates, and any other persons acting as a group together with the holder or the holder's affiliates) would beneficially own in excess of 4.99% (or, upon election by the holder prior to the issuance of any warrants 9.99%) of the Company's outstanding Common Stock after giving effect to the issuance of shares of Common Stock issuable upon exercise of such warrants; provided that a holder may decrease, or upon at least 61 days' prior notice to the Company, increase such beneficial ownership limitation. In no event shall such beneficial ownership limitation exceed 9.99%.

(32)

The shares are directly owned by Timothy C. Huffmyer, who has sole voting and dispositive power over the shares. Since June 9, 2025, Mr. Huffmyer serves as the Vice President, Chief Operating Officer, Chief Financial Officer and Treasurer of the Company. Mr. Huffmyer also holds 150,762 shares of Common Stock, some of which are restricted shares of Common Stock received as compensation and subject to future vesting.

(33)

These shares are comprised of (i) 150,762 shares of Common Stock, of which 69,119 shares are restricted shares of Common Stock and subject to satisfaction of vesting conditions, and (ii) 119,760 shares of Common Stock issuable upon the exercise of September 11 Warrants. Each of the warrants contain a beneficial ownership limitation that provides that a holder will not have the right to exercise any portion of its warrants if such holder (together with the holder's affiliates, and any other persons acting as a group together with the holder or the holder's affiliates) would beneficially own in excess of 4.99% (or, upon election by the holder prior to the issuance of any warrants 9.99%) of the Company's outstanding Common Stock after giving effect to the issuance of shares of Common Stock issuable upon exercise of such warrants; provided that a holder may decrease, or upon at least 61 days' prior notice to the Company, increase such beneficial ownership limitation. In no event shall such beneficial ownership limitation exceed 9.99%.

(34)

William W. Smith, Jr. and Dieva L. Smith are co-trustees of the Smith Living Trust UA 11/30/2021. William W. Smith, Jr. and Dieva L. Smith, as co-trustees, have shared voting and dispositive power over the shares held by the trust. Mr. Smith is the Chairman of the Board, Chief Executive Officer and President of the Company. As a result of the foregoing, Mr. Smith may be deemed to have beneficial ownership (as determined under Section 13(d) of the Securities Exchange Act of 1934, as amended) of the securities held by the Smith Living Trust. Mr. Smith also directly holds 249,348 shares of Common Stock of which 181,433 shares are restricted shares of Common Stock subject to satisfaction of vesting conditions.

(35)

These shares are comprised of (i) 5,592,968 shares of Common Stock, including 2,236,136 shares of Common Stock purchased in the November Private Placement Transaction and (ii) 5,797,585 shares of Common Stock issuable upon the exercise of warrants held by the Selling Stockholder, including 986,342 shares of Common Stock issuable upon the exercise of September 11 Warrants and 2,236,136 shares of Common Stock issuable upon the exercise of Private Placement Warrants. The Private Placement Warrants are subject to certain limitations set forth in the Private Placement SPA pursuant to which the Private Placement Warrants were issued, including a limit on the ability to exercise the Private Placement Warrants until the time, if any, that the Company's stockholders have approved the exercise thereof, in accordance with Nasdaq listing standards.

(36)

The Selling Stockholder served as the Placement Agent for the November RDO Offering. The Selling Stockholder received certain compensation in the form of a cash fee equivalent to 6.0% of the gross proceeds raised in the November RDO Offering in connection with the November RDO Offering. The Selling Stockholder is a registered broker dealer with a registered address of 888 San Clemente Drive, Suite 400, Newport Beach, CA 92660. Gordon J. Roth and Byron C. Roth have shared voting and dispositive power over the securities held. The Selling Stockholder acquired the shares of Common Stock in the ordinary course of business and, at the time such shares were acquired, the Selling Stockholder had no agreement or understanding, directly or indirectly, with any person to distribute such securities.

(37)

These shares are comprised of (i) 74,538 shares of Common Stock purchased in the November RDO Offering and (ii) 228,238 shares of Common Stock issuable upon the exercise of warrants held by the Selling Stockholder, including 74,538 shares of Common Stock issuable upon the exercise of November Warrants, 133,700 shares of Common Stock issuable upon the exercise of warrants received as compensation in connection with a May 2024 registered direct offering and concurrent private placement, and 20,000 shares of Common Stock issuable upon the exercise of a warrant issued in connection with an October 2024 registered direct offering pursuant to the terms of an agreement previously entered into between the Company and Roth as "tail" compensation.

PLAN OF DISTRIBUTION

We registered the shares of Common Stock, including shares of Common Stock issuable upon exercise of the Warrants on behalf of the Selling Stockholders. Each of the Selling Stockholders and any of their pledgees, assignees, distributees and successors-in-interest of these shares of Common Stock received after the date of this prospectus from a Selling Stockholder as a gift, pledge, or other transfer, may, from time to time, sell, transfer, or otherwise dispose of any or all of the shares of Common Stock covered hereby on the Nasdaq Capital Market or any other stock exchange, market, or trading facility on which the securities are traded or in private transactions. These dispositions may be at fixed prices, at prevailing market prices at the time of the sale, at varying prices determined at the time of sale, or at negotiated prices. We will not receive any of the proceeds from the sale by these parties of the shares of Common Stock, although we may receive proceeds of up to approximately $4.71 million if all of the Warrants held by the Selling Stockholders are exercised for cash, based on the current per share exercise price of the Warrants. A Selling Stockholder may use any one or more of the following methods when selling securities:

•	on any national securities exchange or quotation service on which the securities may be listed or quoted at the time of sale;

•	in the over-the-counter market;

•	in transactions otherwise than on these exchanges or systems or in the over-the-counter market;

•	ordinary brokerage transactions and transactions in which the broker-dealer solicits purchasers;

•	block trades in which the broker-dealer will attempt to sell the securities as agent but may position and resell a portion of the block as principal to facilitate the transaction;

•	purchases by a broker-dealer as principal and resale by the broker-dealer for its account;

•	exchange distributions in accordance with the rules of the applicable exchange;

•	privately negotiated transactions;

•	settlement of short sales made after the date the registration statement is declared effective by the SEC;

•	transactions through broker-dealers that agree with the Selling Stockholders to sell a specified number of such securities at a stipulated price per security;

•	through the writing or settlement of options or other hedging transactions, whether through an options exchange or otherwise;

•	a combination of any such methods of sale; or

•	any other method permitted pursuant to applicable law.

The Selling Stockholders may also sell securities under Rule 144 or any other exemption from registration under the Securities Act of 1933, as amended (the "Securities Act"), if available, rather than under this prospectus. In addition, the Selling Stockholders may transfer the shares of Common Stock by other means not described in this prospectus.

If the Selling Stockholders effect such transactions by selling shares of Common Stock to or through underwriters, broker-dealers or agents, such underwriters, broker-dealers or agents may receive commissions in the form of discounts, concessions or commissions from the Selling Stockholders or commissions from purchasers of the shares of Common Stock for whom they may act as agent or to whom they may sell as principal (which discounts, concessions or commissions as to particular underwriters, broker-dealers or agents may be in excess of those customary in the types of transactions involved).

In connection with sales of the shares of Common Stock or otherwise, the Selling Stockholders may enter into hedging transactions with broker-dealers, which may in turn engage in short sales of the shares of Common Stock in the course of hedging in positions they assume. To the extent permitted by applicable securities laws, the Selling Stockholders may also sell shares of Common Stock short and deliver shares of Common Stock covered by this prospectus to close out short positions and to return borrowed shares in connection with such short sales. The Selling Stockholders may also loan or pledge shares of Common Stock to broker-dealers that in turn may sell such shares.

The Selling Stockholders may also enter into option or other transactions with broker-dealers or other financial institutions or the creation of one or more derivative securities which require the delivery to such broker-dealer or other financial institution of the Common Stock offered by this prospectus, which Common Stock such broker-dealer or other financial institution may resell pursuant to this prospectus (as supplemented or amended to reflect such transaction).

The Selling Stockholders may pledge or grant a security interest in some or all of the Warrants or shares of Common Stock owned by them and, if they default in the performance of their secured obligations, the pledgees or secured parties may offer and sell the shares of Common Stock from time to time pursuant to this prospectus or any amendment to this prospectus under Rule 424(b)(3) or other applicable provision of the Securities Act amending, if necessary, the list of Selling Stockholders to include the pledgee, transferee or other successors in interest as Selling Stockholders under this prospectus. The Selling Stockholders also may transfer and donate the shares of Common Stock in other circumstances in which case the transferees, donees, pledgees or other successors in interest will be the selling beneficial owners for purposes of this prospectus.

To the extent required by the Securities Act and the rules and regulations thereunder, the Selling Stockholders and any underwriter, broker-dealer or agent participating in the distribution of the shares of Common Stock may be deemed to be "underwriters" within the meaning of the Securities Act, and any commission paid, or any discounts or concessions allowed to, any such underwriter, broker-dealer or agent may be deemed to be underwriting commissions or discounts under the Securities Act. At the time a particular offering of the shares of Common Stock is made, a prospectus supplement, if required, will be distributed, which will set forth the aggregate amount of shares of Common Stock being offered and the terms of the offering, including the name or names of any underwriters, broker-dealers or agents, any discounts, commissions and other terms constituting compensation from the Selling Stockholders and any discounts, commissions or concessions allowed or re-allowed or paid to such underwriters, broker-dealers or agents.

Under the securities laws of some states, the shares of Common Stock may be sold in such states only through registered or licensed brokers or dealers. In addition, in some states the shares of Common Stock may not be sold unless such shares have been registered or qualified for sale in such state or an exemption from registration or qualification is available and is complied with.

There can be no assurance that any Selling Stockholder will sell any or all the shares of Common Stock registered pursuant to the registration statement, of which this prospectus forms a part.

Each Selling Stockholder has informed the Company that it does not have any written or oral agreement or understanding, directly or indirectly with any person to distribute the shares of Common Stock issuable upon exercise of the Warrants.

The Selling Stockholders and any other person participating in such distribution will be subject to applicable provisions of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and the rules and regulations thereunder, including, without limitation, to the extent applicable, Regulation M of the Exchange Act, which may limit the timing of purchases and sales of any of the shares of Common Stock by the Selling Stockholders and any other participating person. To the extent applicable, Regulation M may also restrict the ability of any person engaged in the distribution of the shares of Common Stock to engage in market-making activities with respect to the Common Stock. All of the foregoing may affect the marketability of the Common Stock and the ability of any person or entity to engage in market-making activities with respect to the Common Stock.

The Company has agreed to indemnify the Selling Stockholders against certain losses, liabilities, obligations, claims, contingencies, damages, costs and expenses, including liabilities under the Securities Act.

We will make copies of this prospectus available to the Selling Stockholders and have informed them of the need to deliver a copy of this prospectus to each purchaser at or prior to the time of the sale (including by compliance with Rule 172 under the Securities Act).

The Selling Stockholders will pay any underwriting discounts and commissions and expenses incurred by the Selling Stockholders for brokerage, accounting, tax or legal services or any other expenses incurred by the Selling Stockholders in disposing of the securities covered by this prospectus. We will bear the costs, fees and expenses incurred in effecting the registration of the securities covered by this prospectus, including all registration and filing fees, and fees and expenses of our counsel and our independent registered public accountants.

Once sold under the registration statement, of which this prospectus forms a part, the shares of Common Stock will be freely tradable in the hands of persons other than our affiliates.

DESCRIPTION OF SECURITIES TO BE REGISTERED

The following summary description of our Common Stock is based on the provisions of our Amended and Restated Certificate of incorporation, as amended (the "Certificate of Incorporation"), our Amended and Restated Bylaws, as amended (the "Bylaws"), and the applicable provisions of the General Corporation Law of the State of Delaware (the "DGCL"). For the complete terms of our Common Stock, please refer to our Certificate of Incorporation and our Bylaws, which are exhibits to the registration statement on Form S-1 of which this prospectus forms a part. The terms of our Common Stock may also be affected by the DGCL and Delaware law generally. For information on how to obtain copies of our Certificate of Incorporation and Bylaws, see the sections titled "Where You Can Find More Information" and "Incorporation of Certain Information by Reference" in this prospectus.

Authorized Capital Stock

Our authorized capital stock consists of 100,000,000 shares of Common Stock, par value $0.001 per share ("Common Stock"), and 5,000,000 shares of preferred stock, par value $0.001 per share ("preferred stock"), the rights and preferences of which may be established from time to time by our board of directors. As of December 2, 2025, we had 25,206,337 shares of Common Stock outstanding and no shares of preferred stock outstanding.

Common Stock

Voting and Classification of the Board of Directors. For all matters submitted to a vote of stockholders, each holder of Common Stock is entitled to one vote for each share registered in his or her name on our books. Our Common Stock does not have cumulative voting rights. Our Certificate of Incorporation and Bylaws provide for our board of directors to be divided into three classes. Each class of directors serves for a three-year term, with one class being elected by the Company's stockholders at each annual meeting. As a result, holders of a majority of our outstanding Common Stock can elect all the directors who are up for election in a particular year.

Dividends. If our board of directors declares a dividend, holders of Common Stock will receive payments from our funds that are legally available to pay dividends. However, this dividend right is subject to any preferential dividend rights we may grant to the persons who hold preferred stock, if any is outstanding.

Liquidation and Dissolution. If we are liquidated or dissolve, the holders of our Common Stock will be entitled to the right to receive ratably, all of the assets and funds that remain after we pay our liabilities and any amounts we may owe to the persons who hold preferred stock, if any is outstanding.

Other Rights and Restrictions. Holders of our Common Stock do not have preemptive or subscription rights, and they have no right to convert their Common Stock into any other securities. Our Common Stock is not subject to redemption by us. The rights, preferences and privileges of the holders of Common Stock are subject to the rights of the stockholders of any series of preferred stock which we may designate in the future. Our Certificate of Incorporation and our Bylaws do not restrict the ability of a holder of Common Stock to transfer his or her shares of Common Stock.

Fully Paid and Non-Assessable. All our outstanding shares of Common Stock and all shares of Common Stock offered hereby will, when issued, be fully paid and non-assessable, including shares of Common Stock issued upon the exercise of Common Stock warrants or subscription rights, if any.

Listing. Our Common Stock is listed on the Nasdaq Capital Market under the symbol "SMSI."

Transfer Agent and Registrar. The transfer agent and registrar for our Common Stock is Computershare Trust Company, N.A.

Delaware Law Affecting Business Combinations. We are subject to the provisions of Section 203 of the General Corporation Law of the State of Delaware (the "DGCL"). Subject to certain exceptions, Section 203 prohibits a publicly held Delaware corporation from engaging in a "business combination" with an "interested stockholder" for a period of three years after the person became an interested stockholder, unless the business combination is approved in a prescribed manner. A "business combination" includes mergers, asset sales and other transactions resulting in a financial benefit to the interested stockholder. Subject to exceptions, an "interested stockholder" is a person who, together with affiliates and associates, owns, or within the prior three years did own, 15% or more of the corporation's voting stock.

LEGAL MATTERS

The validity of the securities offered hereby and certain other legal matters will be passed upon for us by Buchanan Ingersoll & Rooney PC, Pittsburgh, Pennsylvania.

EXPERTS

The consolidated financial statements of Smith Micro Software, Inc. and its subsidiaries as of December 31, 2024 and 2023 and for each of the years in the two-year period ended December 31, 2024, incorporated in this Prospectus by reference from the Smith Micro Software, Inc. Annual Report on Form 10-K for the year ended December 31, 2024 have been audited by SingerLewak LLP, an independent registered public accounting firm, as stated in their report thereon (which report expresses an unqualified opinion and includes an explanatory paragraph relating to substantial doubt about the Company's ability to continue as a going concern), incorporated herein by reference, and have been incorporated in this Prospectus and Registration Statement in reliance upon such report and upon the authority of such firm as experts in accounting and auditing.

WHERE YOU CAN FIND MORE INFORMATION

We make periodic and other filings required to be filed by us as a reporting company under Sections 13 and 15(d) of the Exchange Act. The SEC maintains a website at http://www.sec.gov that contains the reports, proxy and information statements, and other information that issuers, such as us, file electronically with the SEC. Our website address is http://www.smithmicro.com. Information contained on our website, however, is not, and should not be deemed to be, incorporated into this prospectus and you should not consider information contained on our website to be part of this prospectus. We have included our website address as an inactive textual reference only.

This prospectus and any prospectus supplement are part of a registration statement that we filed with the SEC and do not contain all the information in the registration statement. The full registration statement may be obtained from the SEC or us, as provided below. Forms of the documents establishing the terms of the offered securities are or may be filed as exhibits to the registration statement or documents incorporated by reference in the registration statement. Statements in this prospectus or any prospectus supplement about these documents are summaries and each statement is qualified in all respects by reference to the document to which it refers. You should refer to the actual documents for a more complete description of the relevant matters. You may inspect a copy of the registration statement through the SEC's website, as provided above.

INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

The SEC's rules allow us to "incorporate by reference" information into this prospectus, which means that we can disclose important information to you by referring you to another document filed separately with the SEC. The information incorporated by reference is deemed to be part of this prospectus, and subsequent information that we file with the SEC will automatically update and supersede that information. Any statement contained in this prospectus or a previously filed document incorporated by reference will be deemed to be modified or superseded for purposes of this prospectus to the extent that a statement contained in this prospectus modifies or replaces that statement.

The following documents filed by us with the SEC are incorporated by reference in this prospectus:

•	our Annual Report on Form 10-K for the fiscal year ended December 31, 2024, filed with the SEC on March 12, 2025;

•	our Quarterly Report on Form 10-Q for the fiscal quarter ended March 31, 2025, filed with the SEC on May 8, 2025;

•	our Quarterly Report on Form 10-Q for the fiscal quarter ended June 30, 2025, filed with the SEC on August 7, 2025;

•	our Quarterly Report on Form 10-Q for the fiscal quarter ended September 30, 2025, filed with the SEC on November 5, 2025;

•	our Definitive Proxy Statement on Schedule 14A, filed with the SEC on April 23, 2025;

•	our Definitive Proxy Statement on Schedule 14A, filed with the SEC on September 22, 2025;

•	our Current Reports on Form 8-K filed with the SEC on January 8, 2025, May 27, 2025, June 4, 2025, June 24, 2025, July 18, 2025, September 17, 2025, October 2, 2025, October 17, 2025, and November 10, 2025.

In addition to the filings listed above, any future filings made with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act after (i) the date of this registration statement and prior to effectiveness of this registration statement and (ii) the date of this prospectus and before the completion of the offering of the securities included in this prospectus, however, we will not incorporate by reference any document or portions thereof that are not deemed "filed" with the SEC, or any information furnished pursuant to Items 2.02 or 7.01 of Form 8-K or related exhibits furnished pursuant to Item 9.01 of Current Reports on Form 8-K.

We will provide, without charge, to each person, including any beneficial owner, to whom a copy of this prospectus is delivered, upon such person's written or oral request, a copy of any and all of the information incorporated by reference in this prospectus. You may request a free copy of any of the documents incorporated by reference in this prospectus by writing or telephoning us at the following address:

Smith Micro Software, Inc.

5800 Corporate Drive

Pittsburgh, PA

(412) 837-5300

Exhibits to the filings will not be sent, however, unless those exhibits have specifically been incorporated by reference in this prospectus or any accompanying prospectus supplement.

2,236,136 Shares of Common Stock and

Up to 6,873,350 Shares of Common Stock Issuable Upon Exercise of Warrants

PROSPECTUS

December 15, 2025