As filed with the Securities and Exchange Commission on September 10, 2021

Registration No. 333-             

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM S-3

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

Lantronix, Inc.

(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction of
incorporation or organization) 33-0362767
(I.R.S. Employer
Identification Number)

7535 Irvine Center Drive, Suite 100

Irvine, California 92618

Telephone: (949) 453-3990

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Jeremy Whitaker

Chief Financial Officer

Lantronix, Inc.

7535 Irvine Center Drive, Suite 100

Irvine, CA 92618

Telephone: (949) 453-3990

(Name, address, including zip code, and telephone number, including area code, of agent for service)

Copy to:

Warren Lazarow

O’Melveny & Myers LLP

2765 Sand Hill Road

Menlo Park, California 94025

Telephone: (650) 473-2600

Approximate date of commencement of proposed sale to the public:

From time to time after this Registration Statement becomes effective.

If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box. ☐

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box. ☒

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a registration statement pursuant to General Instruction I.D. or a post-effective amendment thereto that shall become effective upon filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the following box. ☐

If this Form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.D. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box. ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer ☐ Accelerated filer ☐ Non-accelerated filer ☒ Smaller reporting company ☒ Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of Securities Act. ☐

CALCULATION OF REGISTRATION FEE

Title of Each Class of Securities to be Registered	Proposed Maximum Aggregate Offering Price	Amount of Registration Fee
Common Stock, par value $0.0001 per share	$100,000,000(1)	$10,910(2)
Total	$100,000,000(1)	$10,910(2)

(1) Pursuant to Rule 416(a) promulgated under the Securities Act of 1933, as amended (the “Securities Act”), this registration statement also covers an indeterminate number of additional shares of common stock that may become issuable as a result of stock splits, stock dividends or similar transactions.

(2) Pursuant to Rule 415(a)(6) promulgated under the Securities Act, the securities registered pursuant to this registration statement include $24,200,000 of unsold securities (the “Unsold Primary Securities”) previously registered by the Registrant on the Registrant’s registration statement on Form S-3 (File No. 333-227127) (the “Existing Registration Statement”) originally filed with the Securities and Exchange Commission (the “SEC”) on August 31, 2018 and declared effective by the SEC on September 12, 2018. The Existing Registration Statement registered the offer and sale by the Registrant of an indeterminate number or amount of shares of the Registrant’s common stock, par value $0.0001 per share, having an aggregate offering price of $35,0000,000. The Registrant has determined to include in this registration statement the Unsold Primary Securities. Pursuant to Rule 415(a)(6) promulgated under the Securities Act, this registration statement includes all of the Unsold Primary Securities and the Registrant is applying the previously paid filing fee associated with the Unsold Primary Securities to this registration statement. Accordingly, the filing fee of $8,269.78 being paid herewith relates to the $75,800,000 of newly registered securities. Pursuant to Rule 415(a)(6) promulgated under the Securities Act, the offering of the Unsold Primary Securities under the Existing Registration Statement will be deemed terminated as of the date of effectiveness of this registration statement.

The Registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act or until the Registration Statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.

The Registrant has an existing registration statement on Form S-3 (File No. 333-227127) that was declared effective on September 12, 2018 and which expires on September 11, 2021 pursuant to Rule 415(a)(5) under the Securities Act. Pursuant to Rule 415(a)(6) promulgated under the Securities Act, the filing fees previously paid in connection with the securities being registered hereunder will continue to be applied to such securities. In accordance with Rule 415(a)(5) and Rule 415(a)(6), the Registrant may continue to offer and sell the securities covered by the existing registration statement during the grace period afforded by Rule 415(a)(5). If the Registrant sells any securities being registered hereunder during the grace period, the Registrant will identify in a pre-effective amendment to this registration statement the new amount of securities to be carried forward to this registration statement in reliance upon Rule 415(a)(6).

The information in this prospectus is not complete and may be changed. These securities may not be sold until the registration statement filed with the Securities and Exchange Commission is effective.

Subject to Completion, dated September 10, 2021

PROSPECTUS

Lantronix, Inc.

$100,000,000

Common Stock

We may from time to time offer and sell shares of our common stock in one or more offerings. The aggregate public offering price of the shares of common stock sold pursuant to this prospectus will not exceed $100,000,000.

This prospectus provides a general description of the common stock that we may offer. Each time any common stock is offered pursuant to this prospectus, we will provide specific information about the offered common stock in one or more supplements to this prospectus.

Prospectus supplements may also add, update or change information in this prospectus. If the information varies between this prospectus and any accompanying prospectus supplement, you should rely on the information in the prospectus supplement.

Our common stock is listed on The Nasdaq Capital Market under the symbol “LTRX.”

You should carefully read this prospectus and any applicable prospectus supplement, together with the documents we incorporate by reference, before you invest in our common stock. This prospectus may not be used to offer and sell our common stock unless accompanied by a prospectus supplement describing the method and terms of the offering.

Investing in any of our common stock involves a high degree of risk. Please read carefully the section entitled “Risk Factors” on page 6 of this prospectus and the “Risk Factors” section contained in any applicable prospectus supplement and in the documents incorporated by reference in this prospectus before investing in our common stock.

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

The date of this prospectus is                  , 2021

TABLE OF CONTENTS

	Page
About This Prospectus	1
Where You Can Find More Information	2
Information We Incorporate by Reference	3
Cautionary Note Regarding Forward-Looking Statements	4
About Lantronix, Inc.	5
Risk Factors	6
Use of Proceeds	7
Description of Capital Stock	8
Plan of Distribution	10
Legal Matters	12
Experts	12

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ABOUT THIS PROSPECTUS

This prospectus is part of a registration statement on Form S-3 that we filed with the Securities and Exchange Commission (the “SEC”) using a “shelf” registration process. Under this shelf registration process, we may, from time to time, sell shares of our common stock described in this prospectus in one or more offerings.

This prospectus provides you with a general description of the common stock that may be offered pursuant to the registration statement of which this prospectus forms a part. Each time we sell common stock pursuant to the registration statement of which this prospectus forms a part, a prospectus supplement will be provided that contains specific information about the terms of that offering and the common stock being sold in that offering. The prospectus supplement may also add to, update or change the information contained in or incorporated by reference in this prospectus. If information varies between this prospectus and any prospectus supplement, you should rely on the information in the prospectus supplement.

You should only rely on the information contained in or incorporated by reference in this prospectus, any prospectus supplement and any free writing prospectus prepared by or on behalf of us or to which we have referred you. We have not authorized anyone to provide you with different information. We take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. If anyone provides you with different or inconsistent information, you should not rely on it. We are not making offers to sell the common stock described in this prospectus in any jurisdiction in which an offer or solicitation is not authorized or in which the person making such offer or solicitation is not qualified to do so or to anyone to whom it is unlawful to make an offer or solicitation.

Before purchasing any common stock, you should carefully read both this prospectus and any prospectus supplement, together with the additional information described under the heading “Where You Can Find More Information” and “Information We Incorporate by Reference.” You should assume that the information contained in this prospectus, any prospectus supplement or any free writing prospectus is accurate only as of the date on its respective cover, and that any information incorporated by reference is accurate only as of the date of the document incorporated by reference, unless we indicate otherwise. Our business, financial condition, results of operations and prospects may have changed since those dates.

No action is being taken in any jurisdiction outside the United States to permit a public offering of our securities or possession or distribution of this prospectus in that 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 this offering and the distribution of this prospectus applicable to that jurisdiction.

References in this prospectus to the terms “we,” “us,” “our,” “the Company” or other similar terms refer to Lantronix, Inc. together with its subsidiaries.

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WHERE YOU CAN FIND MORE INFORMATION

This prospectus is part of a registration statement on Form S-3 that we filed with the SEC. This prospectus does not contain all of the information included in the registration statement.

We file annual, quarterly and current reports, proxy statements and other information with the SEC. Our SEC filings are available to the public at the SEC’s website at www.sec.gov. We also maintain a website located at www.lantronix.com, where these SEC filings and other information about the Company can be accessed, free of charge, as soon as reasonably practicable after we electronically file the information with, or furnish it to, the SEC. The information contained on or that can be accessed through our website does not constitute part of this prospectus, except for reports filed with the SEC that are specifically incorporated herein by reference.

Forms of any documents establishing the terms of the offered securities are filed as exhibits to the registration statement of which this prospectus forms a part or will be filed through an amendment to our registration statement on Form S-3 or under cover of a Current Report on Form 8-K or other document filed with the SEC and incorporated into this prospectus by reference. Statements in this prospectus 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. The full registration statement, including exhibits thereto, may be obtained from the SEC or us as indicated above.

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INFORMATION WE INCORPORATE BY REFERENCE

The SEC allows 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 considered to be part of this prospectus. Any statement contained in a document incorporated or deemed to be incorporated by reference in this prospectus will be deemed to be modified or superseded for purposes of this prospectus to the extent a statement contained in this prospectus or in any other subsequently filed document that is or is deemed to be incorporated by reference in this prospectus modifies or supersedes that statement. We incorporate by reference in this prospectus the following documents and reports we filed with the SEC (other than, in each case, the portions that are deemed to have been furnished and not filed in accordance with SEC rules):

• our Annual Report on Form 10-K for the fiscal year ended June 30, 2021, filed with the SEC on August 27, 2021;

• our Current Report on Form 8-K filed with the SEC on August 2, 2021 (with respect to Item 2.03 and the corresponding portions of Item 9.01 only) and Amendment No. 1 on Current Report on Form 8-K/A filed with the SEC on August 11, 2021; and

• the description of our common stock, par value $0.0001 per share, contained in Exhibit 4.1 to our Annual Report on Form 10-K for the year ended June 30, 2021 (filed with the SEC on August 27, 2021), which updated the description thereof contained in our Registration Statement on Form 8-A, filed with the SEC on August 2, 2000 (File No. 001-16027), and any amendments or reports filed for the purpose of updating such description.

We also incorporate by reference the information contained in all other documents that we file with the SEC pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) (other than the portions that are deemed to have been furnished and not filed in accordance with SEC rules, unless otherwise indicated therein), on or after the date of the registration statement of which this prospectus forms a part and prior to its effectiveness and prior to the completion of the offering of all securities under this prospectus and any prospectus supplement, including the portions of our Definitive Proxy Statement on Schedule 14A to be filed with the SEC within 120 days of our fiscal year end and that are to be incorporated by reference in Part III of our Annual Report on Form 10-K for the year ended June 30, 2021. The information contained in any such document will be considered part of this prospectus from the date the document is filed with the SEC. Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of this prospectus and any accompanying prospectus supplement to the extent that a statement contained herein or therein or in any other subsequently filed document which also is or is deemed to be incorporated by reference herein or therein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this prospectus or any accompanying prospectus supplement. We will provide to each person, including any beneficial owner, to whom a prospectus (or a notice of registration in lieu thereof) is delivered, a copy of any or all of the documents incorporated by reference in this prospectus or any accompanying prospectus supplement (other than an exhibit to these filings, unless the exhibit is specifically incorporated by reference in the document requested) at no cost. Any such request can be made by writing or telephoning us at the following address and telephone number:

Lantronix, Inc.

Attn: Jeremy Whitaker

7535 Irvine Center Drive, Suite 100

Irvine, CA 92618

Telephone: (949) 453-3990

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CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus, including the documents incorporated by reference herein, contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Exchange Act. In some cases, you can identify forward-looking statements by the words “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “might,” “objective,” “ongoing,” “plan,” “predict,” “project,” “potential,” “should,” “will,” or “would,” or the negative of these terms, or other comparable terminology intended to identify statements about the future. We have based our forward-looking statements on our current expectations and projections about trends affecting our business and industry and other future events. Although we do not make forward-looking statements unless we believe we have a reasonable basis for doing so, we cannot guarantee their accuracy. Forward-looking statements are subject to substantial risks and uncertainties that could cause our results or experiences, or future business, financial condition, results of operations or performance, to differ materially from our historical results or those expressed or implied in any forward-looking statement contained in this news release. Factors which could have a material adverse effect on our operations and future prospects or which could cause actual results to differ materially from our expectations include, but are not limited to: the impact of the COVID-19 pandemic, including the emergence of new more contagious and/or vaccine-resistant strains of the virus and the impact of vaccination efforts, including the efficacy and public acceptance of vaccinations, on our business, employees, supply and distribution chains and the global economy; the effects of negative or worsening regional and worldwide economic conditions or market instability on our business, including effects on purchasing decisions by our customers; our ability to continue to generate revenue from products sold into mature markets; our ability to develop, market, and sell new products; our ability to succeed with our new software offerings; fluctuations in our revenue due to the project-based timing of orders from certain customers; unpredictable timing of our revenues due to the lengthy sales cycle for our products and services and potential delays in customer completion of projects; our ability to accurately forecast future demand for our products; delays in qualifying revisions of existing products; constraints or delays in the supply of, or quality control issues with, certain materials or components; difficulties associated with the delivery, quality or cost of our products from our contract manufacturers or suppliers; risks related to the outsourcing of manufacturing and international operations; difficulties associated with our distributors or resellers; intense competition in our industry and resultant downward price pressure; rises in inventory levels and inventory obsolescence; undetected software or hardware errors or defects in our products; cybersecurity risks; our ability to obtain appropriate industry certifications or approvals from governmental regulatory bodies; changes in applicable U.S. and foreign government laws, regulations, and tariffs; our ability to successfully implement our acquisitions strategy or integrate acquired companies; uncertainty as to the future profitability of acquired businesses, and delays in the realization of, or the failure to realize, any accretion from acquisition transactions; acquiring, managing and integrating new operations, businesses or assets, and the associated diversion of management attention or other related costs or difficulties; our ability to protect patents and other proprietary rights and avoid infringement of others’ proprietary technology rights; the level of our indebtedness, our ability to service our indebtedness and the restrictions in our debt agreements; our ability to attract and retain qualified management; and any additional factors included in our Annual Report on Form 10-K for the fiscal year ended June 30, 2021, filed with SEC on August 27, 2021, including in the section entitled “Risk Factors” in Item 1A of Part I of such report, and in our other public filings with the SEC, including in any prospectus supplement. In addition, actual results may differ as a result of additional risks and uncertainties of which we are currently unaware or which we do not currently view as material to our business. For these reasons, investors are cautioned not to place undue reliance on any forward-looking statements. The forward-looking statements we make speak only as of the date on which they are made. We expressly disclaim any intent or obligation to update any forward-looking statements after the date hereof to conform such statements to actual results or to changes in our opinions or expectations, except as required by applicable law or the rules of the Nasdaq Stock Market LLC. If we do update or correct any forward-looking statements, investors should not conclude that we will make additional updates or corrections.

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ABOUT LANTRONIX, INC.

Lantronix, Inc. is a global provider of software as a service (“SaaS”), engineering services, and hardware for Edge Computing, the Internet of Things (“IoT”), and Remote Environment Management (“REM”). We enable our customers to provide reliable and secure solutions while accelerating their time to market. Our products and services dramatically simplify operations through the creation, development, deployment and management of customer projects at scale while providing quality, reliability and security.

Our portfolio of services and products address each layer of the IoT Stack including Collect, Connect, Compute, Control and Comprehend, enabling our customers to deploy successful IoT and REM solutions. Our services and products deliver a holistic approach, addressing our customers’ needs by integrating a SaaS management platform with custom application development layered on top of external and embedded hardware, enabling intelligent edge computing, secure communications (wired, Wi-Fi, and cellular), location and positional tracking, and environmental sensing and reporting.

With three decades of proven experience in creating robust industry and customer specific solutions, we are an innovator in enabling our customers to build new business models, leverage greater efficiencies and realize the possibilities of the IoT and REM. Lantronix’s solutions are deployed inside millions of machines at data centers, offices, and remote sites serving a wide range of industries, including energy, agriculture, medical, security, manufacturing, distribution, transportation, retail, financial, environmental, infrastructure and government.

We were incorporated in California in 1989 and reincorporated in Delaware in 2000.

Our principal executive offices are located at 7535 Irvine Center Drive, Suite 100, Irvine, California 92618, our telephone number is (949) 453-3990, and our website is www.lantronix.com. The information contained on or that can be accessed through our website does not constitute part of this prospectus, except for reports filed with the SEC that are specifically incorporated herein by reference.

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RISK FACTORS

Investing in our common stock involves significant risks. Before making an investment decision, in addition to the other information contained in or incorporated by reference in this prospectus and any prospectus supplement, you should carefully consider the specific risks set forth under the heading “Risk Factors” in our most recent Annual Report on Form 10-K filed with the SEC, as such risk factors may be amended, supplemented or superseded from time to time by other reports we file with the SEC, including subsequent Annual Reports on Form 10-K and Quarterly Reports on Form 10-Q, and the risk factors described under the caption “Risk Factors” in any applicable prospectus supplement. See “Where You Can Find More Information” and “Information We Incorporate by Reference.” If any of these risks actually occurs, our business, results of operations and financial condition could suffer. In that case, the trading price of our common stock could decline, and you could lose all or part of your investment. Additional risks and uncertainties not currently known to us, or that we currently believe are immaterial, may also adversely affect our business, operating results and financial condition and the value of an investment in our common stock. In addition, past financial performance may not be a reliable indicator of future performance, and historical trends should not be used to anticipate results or trends in future periods.

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USE OF PROCEEDS

We intend to use the net proceeds from the sale of any common stock covered by this prospectus as set forth in the applicable prospectus supplement. Pending any specific application, we may temporarily invest funds in short-term investments, including marketable securities.

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DESCRIPTION OF CAPITAL STOCK

The following summary of the material features of our capital stock does not purport to be complete and is subject to, and qualified in its entirety by, the provisions of our amended and restated certificate of incorporation (as amended and as in effect, our “Certificate of Incorporation”) and our amended and restated bylaws (as amended and as in effect, our “Bylaws”), each of which are filed as exhibits to the registration statement of which this prospectus is a part, as well as applicable provisions of the Delaware General Corporation Law.

Common Stock

We may issue shares of our common stock from time to time. We are authorized to issue up to 100,000,000 shares of common stock, par value $0.0001 per share. As of August 31, 2021, there were 29,153,912 shares of common stock issued and outstanding. Each outstanding share of common stock is entitled to one vote on all matters submitted to a vote of stockholders. Holders of common stock are entitled to receive ratably such dividends, if any, as may be declared by the Board out of funds legally available therefor. Upon the liquidation, dissolution, or winding up of the Company, the holders of common stock are entitled to share ratably in all of our assets which are legally available for distribution after payment of all debts and other liabilities and liquidation preference of any outstanding preferred stock. Holders of common stock have no preemptive, subscription, redemption or conversion rights. The outstanding shares of common stock are validly issued, fully paid and non-assessable. The rights, preferences and privileges of the holders of common stock are subject to, and may be adversely affected by, the rights of the holders of shares of any series of preferred stock that we might designate in the future.

Preferred Stock

We are authorized to issue up to 5,000,000 shares of preferred stock, par value $0.0001 per share. As of August 31, 2021, no shares of our preferred stock were outstanding. Each share of preferred stock is entitled to the number of votes equal to the number of shares of common stock into which each share of preferred stock could be converted at the record date for determination of the stockholders entitled to vote on such matters, or, if no such record date is established, at the date such vote is taken or any written consent of stockholders is solicited, such votes to be counted together with all other shares of stock having general voting power and not separately as a class. The terms of any series of preferred stock will be set forth in an amendment to our Certificate of Incorporation.

Delaware Law and Certain Certificate of Incorporation and Bylaw Provisions

Our Certificate of Incorporation and Bylaws contain a number of provisions that could make our acquisition by means of a tender or exchange offer, a proxy contest or otherwise more difficult. Certain of these provisions are summarized below:

• Under our Bylaws, only the Board, the Chairperson of the Board, the chief executive officer or president (in the absence of a chief executive officer) may call special meetings of stockholders.

• Our Bylaws establish advance notice procedures for stockholder proposals and the nomination of candidates for election as directors, other than nominations made by or at the direction of the Board or a committee of the Board.

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• We are subject to the provisions of Section 203 of the Delaware General Corporation Law. 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 certain 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.

• Our Certificate of Incorporation eliminates the right of stockholders to act by written consent without a meeting.

• Our Certificate of Incorporation and Bylaws do not provide for cumulative voting in the election of directors.

The amendment of many of the provisions described above would require approval by holders of at least 66 2/3% of the outstanding shares of our common stock.

Nasdaq Capital Market

Our common stock is listed on the Nasdaq Capital Market and traded under the symbol “LTRX.”

Transfer Agent and Registrar

The transfer agent and registrar for our common stock is Computershare Shareowner Services, LLC.

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PLAN OF DISTRIBUTION

We may offer and sell the common stock described in this prospectus from time to time in one or more transactions, including without limitation:

• directly to one or more investors, including through a specific bidding, auction or other process;

• to investors through agents;

• directly to agents;

• to or through brokers or dealers;

• to the public through underwriting syndicates led by one or more managing underwriters;

• to one or more underwriters acting alone for resale to investors or to the public; or

• through a combination of any of these methods or any other method permitted pursuant to applicable law.

In addition, the manner in which we may offer and sell some or all of the common stock described in this prospectus includes, without limitation, through:

• a block trade in which a broker-dealer will attempt to sell as agent, but may position or resell a portion of the block, as principal, in order to facilitate the transaction;

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

• ordinary brokerage transactions and transactions in which a broker solicits purchasers; or

• privately negotiated transactions.

A prospectus supplement with respect to each offering of common stock will set forth the terms of the offering and the method of distribution of the common stock and will identify any firms acting as underwriters, dealers or agents in connection with the offering, including:

• the name or names of any underwriters, dealers or agents and the amounts of common stock underwritten or purchased by each of them, if any;

• the purchase price of the common stock being offered and the net proceeds to be received by us from the sale;

• any public offering price;

• any over-allotment options under which the underwriters may purchase additional common stock from us;

• any delayed delivery arrangements;

• any underwriting discounts or commissions or agency fees and other items constituting compensation to underwriters, dealers or agents;

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• any discounts or concessions allowed or reallowed or paid to dealers; and

• any securities exchange or markets on which the common stock offered in the prospectus supplement may be listed.

The offer and sale of the common stock described in this prospectus by us, the underwriters or the third parties described above may be effected from time to time in one or more transactions, including privately negotiated transactions, either:

• at a fixed price or prices, which may be changed;

• at market prices prevailing at the time of sale;

• in “at the market offerings,” within the meaning of Rule 415(a)(4) of the Securities Act, to or through a market maker or into an existing trading market, on an exchange or otherwise;

• at prices related to the prevailing market prices; or

• at negotiated prices.

In connection with the sale of the common stock, underwriters, dealers or agents may be deemed to have received compensation from us in the form of underwriting discounts or commissions and also may receive commissions from common stock purchasers for whom they may act as agent. Underwriters may sell the common stock to or through dealers, and the dealers may receive compensation in the form of discounts, concessions or commissions from the underwriters or commissions from the purchasers for whom they may act as agent.

Underwriters, dealers and agents participating in the common stock distribution may be deemed to be underwriters, and any discounts and commissions they receive and any profit they realize on the resale of common stock may be deemed to be underwriting discounts and commissions under the Securities Act. Underwriters and their controlling persons, dealers and agents may be entitled, under agreements entered into with us, to indemnification against and contribution toward specific civil liabilities, including liabilities under the Securities Act.

Any common stock we sell pursuant to a prospectus supplement may or may not be listed on a national securities exchange. It is possible that one or more underwriters may make a market in the common stock, but such underwriters will not be obligated to do so and may discontinue any market making at any time without notice. No assurance can be given as to the liquidity of, or the trading market for, any offered common stock.

In connection with any offering, the underwriters may purchase and sell common stock in the open market. These transactions may include short sales, stabilizing transactions and purchases to cover positions created by short sales. Short sales involve the sale by the underwriters of a greater number of securities than they are required to purchase in an offering. Stabilizing transactions consist of bids or purchases made for the purpose of preventing a decline in the market price of the common stock while an offering is in progress. The underwriters also may impose a penalty bid. This occurs when a particular underwriter repays to the underwriters a portion of the underwriting discount received by it because the underwriters have repurchased common stock sold by or for the account of that underwriter in stabilizing or short-covering transactions. These activities by the underwriters may stabilize, maintain or otherwise affect the market price of the common stock. As a result, the price of the common stock may be higher than the price that otherwise might exist in the open market. If these activities are commenced, they may be discontinued by the underwriters at any time. Underwriters may engage in over-allotment. If any underwriters create a short position in the common stock in an offering in which they sell more common stock than are set forth on the cover page of the applicable prospectus supplement, the underwriters may reduce that short position by purchasing the common stock in the open market.

Underwriters, dealers or agents that participate in the offer of common stock, or their affiliates or associates, may have engaged or engage in transactions with and perform services for, us or our affiliates in the ordinary course of business for which they may have received or receive customary fees and reimbursement of expenses.

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LEGAL MATTERS

Unless otherwise indicated in the applicable prospectus supplement, certain legal matters regarding the validity of the common stock to be offered by this prospectus will be passed upon for us by O’Melveny & Myers LLP. Additional legal matters may be passed upon for us or any underwriters, dealers or agents by counsel that will be named in the applicable prospectus supplement.

EXPERTS

The consolidated financial statements of Lantronix, Inc. as of June 30, 2021 and 2020 and for each of the years in the  two-year period ended June 30, 2021 incorporated in this Prospectus by reference from the Lantronix, Inc. Annual Report on Form 10-K for the year ended June 30, 2021 have been audited by Baker Tilly US, LLP, an independent registered public accounting firm, as stated in their report thereon incorporated herein by reference, and have been incorporated by reference in this Prospectus and Registration Statement in reliance upon such report and upon the authority of such firm as experts in accounting and auditing.

The combined carve-out balance sheet of the Electronics & Software Segment of Communications Systems, Inc. as of December 31, 2020, and the related combined carve-out statements of operations, changes in net investment, and cash flows for the year then ended, and the related notes to the combined carve-out financial statements (collectively, the “combined carve-out financial statements”) included in Lantronix, Inc.’s Current Report on Form 8-K/A filed with the SEC on August 10, 2021 have been audited by Baker Tilly US, LLP, independent auditors, as set forth in their report therein, and incorporated herein by reference. The combined carve-out financial statements contain an emphasis-of-matter paragraph that states that the accompanying combined carve-out financial statements reflect the assets, liabilities, revenue, and expenses directly attributable to the carved out entities as well as allocations deemed reasonable by management to present the financial position, results of operations, changes in net investment, and cash flows in the combined carve-out financial statements. The combined carve-out financial statements have been incorporated herein by reference in reliance upon the report of Baker Tilly US, LLP given upon their authority as experts in accounting and auditing.

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PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14. Other Expenses of Issuance and Distribution.

The following is a statement of the estimated expenses, to be paid solely by the registrant, of the issuance and distribution of the securities being registered hereby:

SEC registration fee	$	10,910	(1)
FINRA filing fee		*
Trustee’s fees and expenses		*
Transfer agent and registrar fees		*
Printing expenses		*
Accounting fees and expenses		*
Rating agency fees		*
Legal fees and expenses		*
Miscellaneous expenses		*
Total	$	10,910

* These fees are calculated based on the securities offered and the number of issuances and accordingly cannot be estimated at this time.

(1) Pursuant to Rule 415(a)(6) promulgated under the Securities Act, the securities registered pursuant to this registration statement include $24,200,000 of unsold securities (the “Unsold Primary Securities”) previously registered by us on our registration statement on Form S-3 (File No. 333-227127) (the “Existing Registration Statement”) originally filed with the SEC on August 31, 2018 and declared effective by the SEC on September 12, 2018. The Existing Registration Statement registered the offer and sale by us of an indeterminate number or amount of shares of our common stock having an aggregate offering price of $35,0000,000. We have determined to include in this registration statement the Unsold Primary Securities. Pursuant to Rule 415(a)(6) promulgated under the Securities Act, this registration statement includes all of the Unsold Primary Securities and we are applying the previously paid filing fee associated with the Unsold Primary Securities to this registration statement. Accordingly, the filing fee of $8,269.78 being paid herewith relates to the $75,800,000 of newly registered securities.

Item 15. Indemnification of Directors and Officers.

Our Certificate of Incorporation limits the liability of directors to the maximum extent permitted by Delaware law. Section 145 of the Delaware General Corporation empowers a Delaware corporation to indemnify any persons who are, or are threatened to be made, parties to any threatened, pending or completed legal action, suit or proceeding, whether civil, criminal, administrative or investigative (other than an action by or in the right of such corporation), by reason of the fact that such person was an officer or director of such corporation, or is or was serving at the request of such corporation as a director, officer, employee or agent of another corporation or enterprise. The indemnity may include expenses (including attorneys’ fees), judgments, fines and amounts paid in settlement actually and reasonably incurred by such person in connection with such action, suit or proceeding, provided that such officer or director acted in good faith and in a manner he reasonably believed to be in or not opposed to the corporation’s best interests, and, for criminal proceedings, had no reasonable cause to believe his conduct was illegal. A Delaware corporation may indemnify officers and directors in an action by or in the right of the corporation under the same conditions, except that no idemnification is permitted without judicial approval if the officer or director is adjudged to be liable to the corporation in the performance of his duty. Where an officer or director is successful on the merits or otherwise in the defense of any action referred to above, the corporation must indemnify him against the expenses which such officer or director actually and reasonably incurred.

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Our Bylaws provide that we shall indemnify our officers and directors and may indemnify our employees and other agents to the fullest extent permitted by law. Our Bylaws also permit us to secure insurance on behalf of any officer, director, employee or other agent for any liability arising out of his or her actions in such capacity, regardless of whether the Bylaws would permit indemnification.

We have also entered into agreements to indemnify our directors and officers, in addition to the indemnification provided for in our Bylaws. These agreements, among other things, indemnify our directors and officers for certain expenses (including attorneys’ fees), judgments, fines and settlement amounts incurred by any such person in any action or proceeding, including any action by or in the right of the Company, arising out of such person’s services as a director or officer of the Company, any subsidiary of the Company or any other company or enterprise to which the person provides services at our request. We believe that these provisions and agreements are necessary to attract and retain qualified persons as directors and officers.

Item 16. Exhibits.

A list of exhibits included as part of this registration statement is set forth in the Exhibit Index and is incorporated herein by reference.

Item 17. Undertakings.

(a) The undersigned registrant hereby undertakes:

(1) To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:

(i) To include any prospectus required by Section 10(a)(3) of the Securities Act;

(ii) To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than a 20% change in the maximum aggregate offering price set forth in the “Calculation of Registration Fee” table in the effective registration statement; and

(iii) To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement;

provided, however, that paragraphs (a)(1)(i), (a)(1)(ii) and (a)(1)(iii) of this section do not apply if the information required to be included by post-effective amendment by those paragraphs is contained in reports filed with or furnished to the Commission by the registrant pursuant to section 13 or section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in the registration statement, or is contained in a form of prospectus filed pursuant to Rule 424(b) that is part of the registration statement.

(2) That, for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

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(4) That, for the purpose of determining liability under the Securities Act of 1933 to any purchaser:

(i) Each prospectus filed by the registrant pursuant to Rule 424(b)(3) shall be deemed to be part of the registration statement as of the date the filed prospectus was deemed part of and included in the registration statement; and

(ii) Each prospectus required to be filed pursuant to Rule 424(b)(2), (b)(5), or (b)(7) as part of a registration statement in reliance on Rule 430B relating to an offering made pursuant to Rule 415(a)(1)(i), (vii), or (x) for the purpose of providing the information required by section 10(a) of the Securities Act of 1933 shall be deemed to be part of and included in the registration statement as of the earlier of the date such form of prospectus is first used after effectiveness or the date of the first contract of sale of securities in the offering described in the prospectus. As provided in Rule 430B, for liability purposes of the issuer and any person that is at that date an underwriter, such date shall be deemed to be a new effective date of the registration statement relating to the securities in the registration statement to which that prospectus relates, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. Provided, however, that no statement made in a registration statement or prospectus that is part of the registration statement or made in a document incorporated or deemed incorporated by reference in the registration statement or prospectus that is part of the registration statement will, as to a purchaser with a time of contract of sale prior to such effective date, supersede or modify any statement that was made in the registration statement or prospectus that was part of the registration statement or made in any such document immediately prior to such effective date.

(5) That, for the purpose of determining liability of the registrant under the Securities Act of 1933 to any purchaser in the initial distribution of the securities, the undersigned registrant undertakes that in a primary offering of securities of the undersigned registrant pursuant to this registration statement, regardless of the underwriting method used to sell the securities to the purchaser, if the securities are offered or sold to such purchaser by means of any of the following communications, the undersigned registrant will be a seller to the purchaser and will be considered to offer or sell such securities to such purchaser:

(i) Any preliminary prospectus or prospectus of the undersigned registrant relating to the offering required to be filed pursuant to Rule 424;

(ii) Any free writing prospectus relating to the offering prepared by or on behalf of the undersigned registrant or used or referred to by the undersigned registrant;

(iii) The portion of any other free writing prospectus relating to the offering containing material information about the undersigned registrant or its securities provided by or on behalf of the undersigned registrant; and

(iv) Any other communication that is an offer in the offering made by the undersigned registrant to the purchaser.

(b) The undersigned registrant hereby undertakes that, for purposes of determining any liability under the Securities Act of 1933, each filing of the registrant’s annual report pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (and, where applicable, each filing of an employee benefit plan’s annual report pursuant to Section 15(d) of the Securities Exchange Act of 1934) that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(c) Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue.

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EXHIBIT INDEX

Exhibit Number	Description
1.1*	Form of Underwriting Agreement
4.1	Amended and Restated Certificate of Incorporation of Lantronix, Inc. (incorporated by reference to Exhibit 3.1 to Lantronix, Inc.’s Annual Report on Form 10-K for the year ended June 30, 2013 filed with the SEC on August 29, 2013)
4.2	Amended and Restated Bylaws of Lantronix, Inc. (incorporated by reference to Exhibit 3.2 to Lantronix, Inc.’s Current Report on Form 8-K filed with the SEC on November 15, 2012)
4.3	Form of Common Stock Certificate of Lantronix, Inc. (incorporated by reference to Exhibit 4.1 to Lantronix, Inc.’s Amendment No. 1 to the Registration Statement on Form S-1 (No. 333-375081) filed with the SEC on June 13, 2000)
5.1+	Opinion of O’Melveny & Myers LLP
23.1+	Consent of Baker Tilly US, LLP
23.2+	Consent of Baker Tilly US, LLP (combined carve-out financial statements)
23.3	Consent of O’Melveny & Myers LLP (included in Exhibit 5.1 filed herewith)
24.1	Power of Attorney (included on signature page hereto)

+	Filed herewith.
*	To be filed, if necessary, either by amendment to this registration statement or as an exhibit to a document to be incorporated by reference in this registration statement.

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SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the city of Irvine, California, on the 10^th day of September, 2021.

LANTRONIX, INC.
By:	/s/ Paul Pickle
	Paul Pickle President and Chief Executive Officer

POWER OF ATTORNEY

Each person whose signature appears below constitutes and appoints Paul Pickle and Jeremy Whitaker, or each of them individually, as his or her true and lawful attorney-in-fact and agent, with full powers of substitution and resubstitution, for and in his or her name, place and stead, in any and all capacities, to sign any and all amendments (including pre-effective amendments, post-effective amendments, exhibits thereto and other documents in connection therewith) to this registration statement and any subsequent registration statement we may hereafter file with the Securities and Exchange Commission pursuant to Rule 462(b) under the Securities Act of 1933 to register additional securities in connection with this registration statement, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or any of them individually, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the dates indicated.

Signature	Title	Date
/s/ Paul Pickle Paul Pickle	President, Chief Executive Officer and Director (Principal Executive Officer)	September 10, 2021
/s/ Jeremy Whitaker Jeremy Whitaker	Chief Financial Officer (Principal Financial and Accounting Officer)	September 10, 2021
/s/ Bernhard Bruscha Bernhard Bruscha	Chairman of the Board	September 10, 2021
/s/ Margaret Evashenk Margaret Evashenk	Director	September 10, 2021
/s/ Paul Folino Paul Folino	Director	September 10, 2021
/s/ Hoshi Printer Hoshi Printer	Director	September 10, 2021

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