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Smith Micro Software Inc.

11/12/2024 | Press release | Distributed by Public on 11/12/2024 08:37

Supplemental Prospectus - Form 424B3

Document

Filed Pursuant to Rule 424(b)(3)

Registration No. 333-282858

PROSPECTUS

8,492,095 Shares of Common Stock

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, distributes and successors-in-interest from time to time, of up to 8,492,095 shares of our common stock, par value $0.001 per share ("Common Stock") (i) issued pursuant to an October 2024 private placement transaction and (ii) issuable upon the exercise of certain warrants (the "Warrants") held by the Selling Stockholders (including shares that may be issued to the holder in lieu of fractional shares).

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 of 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 17 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 $6.16 million if all of the Warrants held by the Selling Stockholders are exercised for cash, based on the per share exercise price of the Warrants.

Our Common Stock is listed on the Nasdaq Capital Market under the symbol "SMSI." On October 25, 2024, the last reported sale price of our Common Stock on the Nasdaq Capital Market was $0.81.

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 11 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 November 12, 2024

TABLE OF CONTENTS


Page
ABOUT THIS PROSPECTUS	1
PROSPECTUS SUMMARY	2
THE OFFERING	8
CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS	10
RISK FACTORS	11
DIVIDEND POLICY	12
DILUTION	12
USE OF PROCEEDS	12
DETERMINATION OF OFFERING PRICE	12
THE SELLING STOCKHOLDERS	12
PLAN OF DISTRIBUTION	17
DESCRIPTION OF SECURITIES TO BE REGISTERED	19
LEGAL MATTERS	20
EXPERTS	21
WHERE YOU CAN FIND MORE INFORMATION	21
INCORPORATION OF CERTAIN INFORMATION BY REFERENCE	22

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 of 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 11, 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.

Our Company

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. Our portfolio includes family safety software solutions to support families in the digital age and a wide range of products for creating, sharing, and monetizing rich content, such as visual voice messaging, retail content display optimization and performance analytics on any product set.

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, "Big Data" analytics, automotive telematics, and the consumer IoT marketplace. The key to our longevity, however, is not simply technological innovation, but our focus on understanding our customers' needs and delivering value.

We currently provide white label Family Safety applications to two Tier 1 wireless carriers in the United States, and believe that we remain strategically positioned to offer our market-leading family safety platform to the majority of U.S. mobile subscribers. We believe that we have an opportunity to increase the respective subscriber bases, and in turn, grow the revenues associated with these Tier 1 carriers. Further, we executed new, multi-year Family Safety agreements with a Tier 1 carrier in Europe in the fourth quarter of 2023 and a U.S.-based carrier in the first quarter of 2024. The new Family Safety solution with the U.S. based carrier launched on our SafePath Global platform during the second quarter of 2024, and associated marketing activities for that product have begun. Additionally, the Family Safety solution for the Tier 1 European carrier is anticipated to launch in the next few weeks.

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® - Comprised of SafePath Family™, SafePath IoT™, SafePath Home™, SafePath Premium™, SafePath Drive™, SafePath OS™ and SafePath Global™, 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, provide cyberbullying protection, social media intelligence, and public safety notifications for parents or guardians. Delivered to end-users as value-added services, SafePath-based solutions activate new revenue streams for MNOs while helping to increase brand affinity and reduce subscriber churn. 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 MNO's resources, and easy customer onboarding, and continued our development of SafePathOS™, a software-only solution designed to be pre-installed and configured on mobile devices to enable MNOs to offer a kids phone with the features and protections of our SafePath digital family software solution out of the box and SafePath Premium™, an upgrade to our SafePath Family™ offering that expands the product's online protection and digital parenting tools.

ViewSpot® - Our retail display management platform provides wireless carriers and retailers with a way to bring powerful on-screen, interactive demos to life. These engaging in-store demo experiences deliver consistent, secure, and targeted content that can be centrally managed and updated via ViewSpot Studio. With the feature set provided by the ViewSpot platform, wireless carriers and other smartphone retailers can easily customize and optimize the content loops displayed on demo devices so that it resonates with in-store shoppers. Interactive demos created in ViewSpot can be experienced on Android smart devices.

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 premium 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, analytics/Big Data solutions, premium messaging services, and visual retail content management solutions.

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.

One of the Company's U.S. Tier 1 carrier customers terminated its family safety contract with Smith Micro, effective June 30, 2023, and elected to continue to receive services under the contract for a transitional period through November 30, 2023. The revenues associated with that customer contract were approximately 36% of our total revenues for 2023. We have not received, and do not anticipate receiving, any further revenue from this contract in 2024.

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 September 30, 2024, we had a total of 174 employees within the following departments: 122 in engineering and operations, 35 in sales and marketing, and 17 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

Reverse Stock Split

On April 3, 2024, our stockholders and a special committee of the Board of Directors approved a 1-for-8 reverse stock split of our outstanding shares of Common Stock, which became effective as of 11:59 pm Eastern time on April 10, 2024 (the "Reverse Stock Split"). As a result of the Reverse Stock Split, every eight (8) shares of Common Stock, whether issued and outstanding or held by the Company as treasury stock, were automatically combined into one (1) issued and outstanding share of Common Stock. No fractional shares were issued in connection with the Reverse Stock Split. Rather, each fractional share of Common Stock that would have otherwise been issued as a result of the Reverse Stock Split was rounded up to the nearest whole share of Common Stock. All equity awards outstanding and Common Stock reserved for issuance under the Company's equity incentive plans, employee stock purchase plan and warrants outstanding immediately prior to the Reverse Stock Split were appropriately adjusted by dividing the number of affected shares of Common Stock by eight (8) and, as applicable, multiplying the exercise price by eight (8), as a result of the Reverse Stock Split.

All share and per share numbers, option numbers, warrant numbers, and other derivative security numbers and exercise prices appearing in this prospectus have been adjusted to give effect to the Reverse Stock Split in this filing,

however, the Company's annual, periodic and current reports, and all other information and documents incorporated by reference into this prospectus that were filed prior to April 11, 2024, do not give effect to the Reverse Stock Split.

May 2024 Registered Direct Offering & Private Placement

On May 10, 2024, we entered into a securities purchase agreement (the "May Purchase Agreement") with certain institutional and accredited investors (the "May Purchasers") relating to the registered direct offering and sale of an aggregate of 1,065,000 shares of the Company's Common Stock at an offering price of $2.15 per share of Common Stock and pre-funded warrants ("Pre-Funded Warrants") to purchase up to 845,000 shares of Common Stock (the "May Registered Direct Offering"). The Pre-Funded Warrants were issued to the extent that the applicable May Purchaser determined, in its sole discretion, that such May Purchaser would beneficially own in excess of 4.99% (or at the May Purchaser's election, 9.99%) of the Company's Common Stock. The Pre-Funded Warrants were purchased at a price of $2.149 per underlying share and had an exercise price of $0.001 per share and could be exercised at any time after their original issuance until such Pre-Funded Warrants are exercised in full. The Pre-Funded Warrants were subsequently exercised in full in August 2024. The shares of Common Stock and Pre-Funded Warrants (including the shares of Common Stock underlying the warrants) were offered by the Company pursuant to a prospectus supplement dated May 10, 2024, and accompanying prospectus dated May 12, 2022, in connection with a takedown from the Company's shelf registration statement on Form S-3 (File No. 333-264667), which was declared effective by the SEC on May 12, 2022.

Pursuant to the May Purchase Agreement, in a concurrent private placement, the Company also sold to the May Purchasers unregistered warrants (the "May Common Warrants") to purchase up to an aggregate of 1,910,000 shares of Common Stock (the "May Private Placement" and together with the May Registered Direct Offering, collectively, the "May Offering"). Each unregistered May Common Warrant has an exercise price of $2.34 per share, is exercisable at any time beginning November 14, 2024 and will expire November 14, 2029.

Roth Capital Partners, LLC ("Roth") acted as the exclusive placement agent for the May Offering pursuant to a placement agency agreement (the "Placement Agency Agreement") dated May 10, 2024, by and between the Company and Roth, and a related engagement letter with Roth, pursuant to which the Company paid Roth a cash fee equal to 6.0% of the gross proceeds received by the Company in the May Offering from sales arranged for by Roth. In addition to the cash fee and pursuant to the Placement Agency Agreement, on May 14, 2024 the Company issued to Roth warrants to purchase up to 133,700 shares of Common Stock (the "May Placement Agent Warrants"), which represented 7.0% of the aggregate number of shares of Common Stock and Pre-Funded Warrants sold in the May Registered Direct Offering. The May Placement Agent Warrants have substantially the same terms as the May Common Warrants, except that the May Placement Agent Warrants have an exercise price equal to $2.86 and expire November 16, 2026.

The gross proceeds to the Company from the May Offering were approximately $4.1 million, before deducting fees to Roth and other offering expenses payable by the Company. The May Offering closed on May 14, 2024.

The shares of Common Stock underlying the May Common Warrants and the May Placement Agent Warrants were registered on a resale registration statement filed June 27, 2024 (File No. 333-280542), which was declared effective by the SEC on July 10, 2024.

October 2024 Registered Direct Offering

On October 1, 2024, we entered into a securities purchase agreement (the "October RDO Purchase Agreement") with certain institutional and accredited investors (the "October RDO Purchasers") relating to the registered direct offering and sale of an aggregate of 3,321,881 shares of the Company's Common Stock at an offering price of $1.165 per share of Common Stock (the "October Offering"). The shares of Common Stock were offered by the Company pursuant to a prospectus supplement dated October 1, 2024, and accompanying prospectus dated May 12, 2022, in connection with a takedown from the Company's shelf registration statement on Form S-3 (File No. 333-264667), which was declared effective by the SEC on May 12, 2022.

Pursuant to the October RDO Purchase Agreement, in a concurrent private placement, the Company also agreed to sell to the October RDO Purchasers unregistered warrants (the "October Common Warrants") to purchase up to

an aggregate of 3,321,881 shares of Common Stock. Each unregistered October Common Warrant has an exercise price of $1.04 per share, is exercisable at any time beginning six (6) months following their original issuance and will expire five years from the initial exercise date.

Pursuant to the terms of an agreement previously entered into with Roth, which expired on September 29, 2024, Roth received certain "tail" compensation in the form of a cash fee of $54,000, and the Company has issued to Roth a warrant to purchase up to 20,000 shares of Company Common Stock (the "Roth Warrant"), which has substantially similar terms as the October Common Warrants, except that the Roth Warrant has an exercise price of $1.46 and has an expiration date of 2.5 years from the effective date of the October Offering.

The shares of Common Stock underlying the October Common Warrants and Roth Warrant are registered on the registration statement of which this prospectus forms a part in accordance with the terms of the October RDO Purchase Agreement and prior agreement with Roth.

The gross proceeds to the Company from the October Offering were approximately $3.87 million, before deducting offering expenses payable by the Company. The closing of the October Offering was announced on October 3, 2024.

October 2024 Private Placement Transaction

On October 1, 2024, we separately entered into a second securities purchase agreement (the "October Private Placement Purchase Agreement") with the Company's Chief Executive Officer (the "October Purchaser") relating to a private placement transaction and sale of 2,575,107 unregistered shares of the Company's Common Stock at an offering price of $1.165 per share of Common Stock (the "October Shares") and unregistered warrants (the "Private Placement Common Warrants") to purchase up to an aggregate of 2,575,107 shares of Common Stock (the "October Private Placement"). Each unregistered Private Placement Common Warrant has an exercise price of $1.04 per share, is exercisable at any time beginning six (6) months following their original issuance and will expire five years from the initial exercise date; provided, however, that the Private Placement Common Warrants will not be exercisable if the exercise thereof would cause the Chief Executive Officer's equity ownership of Company Common Stock to exceed 19.99%, unless and until such time as the Company has received approval from the Company's stockholders in accordance with Nasdaq Listing Rule 5635(b).

The October Shares of Common Stock and shares of Common Stock underlying the Private Placement Common Warrants are registered on the registration statement of which this prospectus forms a part in accordance with the terms of the October Private Placement Purchase Agreement.

The gross proceeds to the Company from the October Private Placement were approximately $3.0 million, before deducting offering expenses payable by the Company. The Company is holding a special meeting on November 12, 2024 to approve the transaction, so as to allow for future Private Placement Common Warrant exercises.

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 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 8,492,095 shares of Common Stock and shares of Common Stock issuable upon exercise of the October Common Warrants, Roth Warrant and the Private Placement Common Warrants (collectively, the "Warrants") held by the Selling Stockholders, of which (i) up to 3,321,881 shares are issuable upon the exercise of the October Common Warrants issued to the October RDO Purchasers upon the closing of the October Offering, (ii) up to 20,000 shares are issuable upon the exercise of the Roth Warrant, (iii) 2,575,107 shares were issued upon the closing of the October Private Placement, and (iv) up to 2,575,107 shares are issuable upon exercise of the Private Placement Common Warrants issued to the October Purchaser pursuant to the terms of the October Private Placement Purchase Agreement.

Shares of Common Stock Outstanding Prior to this Offering(1):	17,736,708 shares as of October 25, 2024

Shares of Common Stock Outstanding assuming exercise of all Warrants(1):	23,653,696 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 17.

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 $6.16 million if all of the Warrants are exercised for cash. See "Use of Proceeds" on page 12 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 11 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 Capital Market 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 17,736,708 shares of Common Stock issued and outstanding as of October 25, 2024, and exclude the following, all as of October 25, 2024:

•6,437 shares of our Common Stock related to stock options issuable upon exercise, with a weighted-average exercise price of $25.70 per share;

•2,465,060 shares of our Common Stock issuable upon the exercise of outstanding warrants, excluding the Warrants, with exercise prices ranging from $2.06 to $21.20 per share; and

•up to an aggregate of 2,609,096 shares of our Common Stock reserved for future grant or issuance under our Amended and Restated Omnibus Equity Incentive Plan (the "Incentive Plan"), and our Employee Stock Purchase Plan (the "ESPP").

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

CAUTIONARY 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 client 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 client 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;

•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;

•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 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 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 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, 2023 that was filed with the SEC on February 26, 2024, 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, as amended, 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 June 30, 2024, our historical net tangible book value was approximately $5.6 million, or $0.47 per share, based on 11,857,234 shares of our Common Stock outstanding as of October 1, 2024. The net tangible book value per share as of June 30, 2024 does not take into consideration the net proceeds we received or the 5,896,988 shares of common stock that we issued, in each case, in October 2024 in the October Offering and the October Private Placement referenced above. If the net proceeds were received as of June 30, 2024 and those 5,896,988 shares were outstanding as of October 1, 2024, then the net tangible book value would have been $0.70 per share as of that date.

To the extent that stock options or warrants outstanding as of October 25, 2024 have been or may be exercised or other shares of our Common Stock are issued (including upon exercise of the Warrants), 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. To the extent that additional capital is raised through the sale of equity or convertible 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 8,492,095 shares of Common Stock. The Selling Stockholders will receive all of 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 $6.16 million if all of the Warrants are exercised for cash, based on the current per share exercise price of the Warrants. We cannot predict when, or if, the Warrants will be exercised. It is possible 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 unregistered shares of Common Stock purchased in the October Private Placement and shares of Common Stock issuable to the Selling Stockholders upon exercise of the Warrants. For additional information regarding the issuance of the shares of unregistered Common Stock and the Warrants, see "October 2024 Registered Direct Offering" and "October Private Placement Transaction" above. We registered the shares of Common Stock issued in the October Private Placement

and 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) our Chief Executive Officer, who participated in the October Private Placement through a trust vehicle in which he is co-trustee, (ii) prior convertible note and warrant issuance transaction entered into in August 2022 with Iroquois Master Fund Ltd. and Iroquois Capital Investment Group, LLC, (iii) the participation of Anson Investments Master Fund LP (and an affiliated entity) in the May Offering, and (iv) ownership of warrants and the prior Placement Agency Agreement and engagement by the Company as a financial advisor in connection with prior capital raising efforts, 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 October 25, 2024, assuming exercise of all Warrants held by each such Selling Stockholder on that date, 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 the October RDO Purchase Agreement and October Private Placement Purchase Agreement, each as described herein, this prospectus generally covers the resale of the number of shares of Common Stock issued pursuant to the October Private Placement, as well as the maximum number of shares of Common Stock issuable upon exercise of the Warrants issued under both the October Private Placement and the October Offering, 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. The fourth column assumes the sale of all of 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 October Common 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 October Common 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%. With respect to the Private Placement Common Warrants, such Private Placement Common Warrants will not be exercisable if the exercise thereof would cause the Company's Chief Executive Officer's equity ownership of Company Common Stock to exceed 19.99%, unless and until such time as the Company has received approval from the Company's stockholders in accordance with Nasdaq Listing Rule

5635(b). 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)
Roy L. Rogers 2020 Dynasty Trust(4)	345,846(5)	171,673	174,173	*
Roy and Ruth Rogers Unitrust, UTD 9/29/89(6)	103,174(7)	42,918	60,256	*
Roy L. Rogers Survivor's Trust(8)	448,615(9)	171,673	276,942	1.6	%
Mary M. Olson 2020 Dynasty Trust(10)	34,334(11)	17,167	17,167	*
Howard Miller and Barbara J. Miller, Joint Ten.(12)	171,672(13)	85,836	85,836	*
Joseph W. and Patricia G. Abrams Family Trust dated 3/15/95(14)	85,836(15)	42,918	42,918	*
Brian and Suzanne Swift TTEE Brian G. Swift and Suzanne B. Swift Rev Liv Trust U/A OTD 3/13/91(16)	85,836(17)	42,918	42,918	*
Mel S. Lavitt Revocable Trust(18)	85,836(19)	42,918	42,918	*
Iroquois Master Fund Ltd.(20)	775,519(21)	370,172	405,347	2.3	%
Iroquois Capital Investment Group LLC(22)	1,351,211(23)	616,953	734,258	4.1	%
John P. Gutfreund(24)	696,956(25)	343,347	353,609	2.0	%
Newtown Road 130 Holdings LLC(26)	858,366(27)	429,183	429,183	2.4	%
Unterberg Legacy Capital, LLC(28)	343,346(29)	171,673	171,673	*
Anson Investments Master Fund LP(30)	2,791,766(31)	772,532	2,019,234	11.4	%
William W. Smith, Jr. and Dieva L. Smith, as Co-Trustees UA 11/30/2021, Smith Living Trust(32)	5,776,706(33)	5,150,214	626,492	3.5	%
Roth Capital Partners, LLC(34)	153,700(35)	20,000	133,700	*

__________________

* Indicates beneficial ownership of less than 1%.

(1)The October Common Warrants contain certain beneficial ownership limitations, which provide that a holder will not have the right to exercise any portion of its October Common 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 October Common 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 October Common 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 Common Warrants, such Private Placement Common Warrants will not be exercisable if the exercise thereof would cause the Company's Chief Executive Officer's equity ownership of Company Common Stock to exceed 19.99%, unless and until such time as the Company has received approval from the Company's stockholders in accordance with Nasdaq Listing Rule 5635(b).

(2)Represents shares of Common Stock (i) purchased in the October Private Placement, (ii) underlying the October Common Warrants issued to the Selling Stockholders as part of the October Offering, and (iii) underlying the Private Placement Common Warrants issued in the October Private Placement. 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 of 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 October Common Warrants or the

application of the 19.99% beneficial ownership limitation to which the Selling Stockholder is subject in connection with the exercise of the Private Placement Common Warrant.

(4)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.

(5)These shares are comprised of (i) 2,500 shares of Common Stock purchased in open market transactions; (ii) 171,673 shares of Common Stock purchased in the October Offering; and (iii) 171,673 shares of Common Stock issuable upon the exercise of the October Common Warrants issued in the October Offering. The October Common 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)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.

(7)These shares are comprised of (i) 17,338 shares of Common Stock purchased in open market transactions; (ii) 42,918 shares of Common Stock purchased in the October Offering; and (iii) 42,918 shares of Common Stock issuable upon the exercise of the October Common Warrants issued in the October Offering. The October Common 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)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.

(9)These shares are comprised of (i) 105,269 shares of Common Stock purchased in open market transactions; (ii) 171,673 shares of Common Stock purchased in the October Offering; and (iii) 171,673 shares of Common Stock issuable upon the exercise of the October Common Warrants issued in the October Offering. The October Common 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)Mary M. Olson is the trustee of the Mary M. Olson 2020 Dynasty Trust and holds sole voting and dispositive power over the shares held by the trust.

(11)These shares are comprised of (i) 17,167 shares of Common Stock purchased in the October Offering and (ii) 17,167 shares of Common Stock issuable upon the exercise of the October Common Warrants issued in the October Offering. The October Common 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)Howard Miller and Barbara J. Miller own these shares as joint tenants with a right of survivorship and have equal voting and dispositive power over the shares held by this Selling Stockholder.

(13)These shares are comprised of (i) 85,836 shares of Common Stock purchased in the October Offering and (ii) 85,836 shares of Common Stock issuable upon the exercise of the October Common Warrants issued in the October Offering. The October Common 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)Joseph W. Abrams and Patricia G. Abrams are co-trustees of the Joseph W. and Patricia G. Abrams Family Trust dated 3/15/95. Joseph W. Abrams and Patricia G. Abrams, as co-trustees, have shared voting and dispositive power over the shares held by the trust.

(15)These shares are comprised of (i) 42,918 shares of Common Stock purchased in the October Offering and (ii) 42,918 shares of Common Stock issuable upon the exercise of October Common Warrants issued in the October Offering. The October Common 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)Brian G. Swift and Suzanne B. Swift are co-trustees of the Brian G. Swift and Suzanne B. Swift Rev Liv Trust U/A OTD 3/13/91. Brian G. Swift and Suzanne B. Swift, as co-trustees, have shared voting and dispositive power over the shares held by the trust.

(17)These shares are comprised of (i) 42,918 shares of Common Stock and (ii) 42,918 shares of Common Stock issuable upon the exercise of October Common Warrants issued in the October Offering. The October Common 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)Mel S. Lavitt is the trustee of the Mel. S. Lavitt Revocable Trust and holds sole voting and dispositive power over the shares held by the trust.

(19)These shares are comprised of (i) 42,918 shares of Common Stock and (ii) 42,918 shares of Common Stock issuable upon the exercise of October Common Warrants issued in the October Offering. The October Common 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)Iroquois Capital Management L.L.C. 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.

(21)These shares are comprised of (i) 288,303 shares of Common Stock and (ii) 487,216 shares of Common Stock issuable upon the exercise of warrants held by the Selling Stockholder, of which 370,172 shares of Common Stock are issuable upon the exercise of October Common Warrants issued in the October Offering. 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)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.

(23)These shares are comprised of (i) 480,505 shares of Common Stock and (ii) 870,706 shares of Common Stock issuable upon the exercise of warrants held by the Selling Stockholder, of which 616,953 shares of Common Stock are issuable upon the exercise of October Common Warrants issued in the October Offering. 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)Amounts exclude shares owned by Newtown Road 130 Holdings LLC reflected elsewhere in this table, 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 and Newtown Road 130 Holdings LLC is 767 5th Avenue, 44th Floor, New York, NY 10153.

(25)These shares are comprised of (i) 343,347 shares of Common Stock purchased in the October Offering and (ii) 353,609 shares of Common Stock issuable upon the exercise of warrants held by the Selling Stockholder, of which 343,347 shares of Common Stock are issuable upon the exercise of October Common Warrants issued in the October Offering. The warrants held by the Selling Stockholder 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)John P. Gutfreund is the Managing Member of Newtown Road 130 Holdings LLC and has voting and dispositive power over the shares held by Newtown Road 130 Holdings LLC. Amounts exclude shares owned by Mr. Gutfreund, individually, reflected elsewhere in this table. The address for Newtown Road 130 Holdings LLC and Mr. Gutfreund is 767 5th Avenue, 44th Floor, New York, NY 10153.

(27)These shares are comprised of (i) 429,183 shares of Common Stock purchased in the October Offering and (ii) 429,183 shares of Common Stock issuable upon the exercise of October Common Warrants issued in the October Offering. The October Common 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)The shares are directly owned by Unterberg Legacy Capital, LLC ("Unterberg"). Andrew Arno, a director of the Company, is a beneficiary of an individual retirement account that 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.

(29)These shares are comprised of (i) 171,673 shares of Common Stock purchased in the October Offering and (ii) 171,673 shares of Common Stock issuable upon the exercise of October Common Warrants issued in the October Offering. The October Common 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)Anson Advisors Inc. and Anson Funds Management LP, the Co-Investment Advisers of Anson Investments Master Fund LP ("Anson"), hold voting and dispositive power over the Common Stock held by Anson. 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 Investments is Maples Corporate Services Limited, PO Box 309, Ugland House, Grand Cayman KY1-1104, Cayman Islands.

(31)These shares are comprised of (i) 529,434 shares of Common Stock purchased in either the May Registered Direct Offering or the October Offering; (ii) 1,489,800 shares of Common Stock issuable upon the exercise of the May Common Warrants issued in the May Private Placement; and (iii) 772,532 shares of Common Stock issuable upon the exercise of the October Common Warrants issued in the October Offering. The May Common Warrants and the October Common Warrants each 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)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 129,119 shares of Common Stock (including 750 shares of Common Stock via an individual retirement account), some of which are restricted shares of Common Stock received as compensation and subject to future vesting.

(33)These shares are comprised of (i) 3,201,599 shares of Common Stock, of which 2,575,107 shares of Common Stock were purchased in the October Private Placement; and (ii) 2,575,107 shares of Common Stock issuable upon the exercise of the Private Placement Common Warrants issued in the October Private Placement. The Private Placement Common Warrants will not be exercisable if the exercise thereof would cause Mr. Smith's equity ownership of the Company's Common Stock to exceed 19.99%, unless and until such time as the Company has received approval from the Company's stockholders in accordance with Nasdaq Listing Rule 5635(b).

(34)The Selling Stockholder served as the Placement Agent for the May Registered Direct Offering and the May Private Placement. The Selling Stockholder also received certain "tail" compensation in the form of a cash fee of $54,000 in connection with the October 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 May Placement Agent Warrants and the Roth Warrant in the ordinary course of business and, at the time the May Placement Agent Warrants and Roth Warrant were acquired, the Selling Stockholder had no agreement or understanding, directly or indirectly, with any person to distribute such securities.

(35)These shares are comprised of (i) 133,700 shares of Common Stock issuable upon the exercise of the May Placement Agent Warrants, which were received as compensation in connection with the May Registered Direct Offering and May Private Placement and (ii) 20,000 shares of Common Stock issuable upon the exercise of the Roth Warrant.

PLAN OF DISTRIBUTION

We registered the shares of Common Stock issued pursuant to the October Private Placement and 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 $6.16 million if all of the Warrants held by the Selling Stockholders are exercised for cash, based on the 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 of 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 or 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, 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 October 25, 2024, we had 17,736,708 shares of Common Stock outstanding and no shares of Preferred Stock outstanding.

Common Stock

Voting. 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. As a result, holders of a majority of our outstanding Common Stock can elect all of 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. Except for the limited contractual participation rights for future financing transactions provided to the May Purchasers under the May Purchase Agreement, holders of our Common Stock do not have preemptive or subscription rights. Holders of our Common Stock also 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 common stockholders 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.

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, 2023 and 2022, and for each of the years in the two-year period ended December 31, 2023 incorporated in this Prospectus by reference from Smith Micro Software, Inc.'s Annual Report on Form 10-K for the year ended December 31, 2023 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 of 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. 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:

•our Annual Report on Form 10-K for the fiscal year ended December 31, 2023, filed with the SEC on February 26, 2024;

•our Quarterly Report on Form 10-Q for the fiscal quarter ended March 31, 2024, filed with the SEC on May 9, 2024;

•our Quarterly Report on Form 10-Q for the fiscal quarter ended June 30, 2024, filed with the SEC on August 5, 2024;

•our Definitive Proxy Statement on Schedule 14A, filed with the SEC on March 13, 2024;

•our Definitive Proxy Statement on Schedule 14A, filed with the SEC on May 9, 2024;

•our Definitive Proxy Statement on Schedule 14A, filed with the SEC on October 21, 2024;

•our Current Reports on Form 8-K filed with the SEC on January 2, 2024, February 22, 2024, April 4, 2024, April 4, 2024, April 30, 2024, May 14, 2024, June 20, 2024 and October 3, 2024.

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.

8,492,095 Shares of Common Stock

PROSPECTUS

November 12, 2024

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