Basis of Presentation and Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2023

Accounting Policies [Abstract]

Basis of Presentation and Summary of Significant Accounting Policies

BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

The significant accounting policies of our Company, which are summarized below, are consistent with accounting principles generally accepted in the United States (“U.S. GAAP”) and reflect practices appropriate to the business in which we operate. Unless indicated otherwise, the information in the Notes to the Consolidated Financial Statements relates to our operations.

Going Concern and Nasdaq Continued Listing Requirements Compliance

Due to our financial performance as of December 31, 2023 and 2022, including net losses of $4.3 million and $10.3 million for the twelve months ended December 31, 2023 and 2022, respectively, and total cash used in operating activities of $2.4 million and $6.7 million for the twelve months ended December 31, 2023 and 2022, respectively, we determined that substantial doubt about our ability to continue as a going concern continues to exist at December 31, 2023. As a result of restructuring actions and initiatives, we have tailored our operating expenses to be more in line with our expected sales volumes; however, we continue to incur losses and have a substantial accumulated deficit.

Additionally, global supply chain and logistics constraints are impacting our inventory purchasing strategy, as we seek to manage both shortages of available components and longer lead times in obtaining components while balancing the development and implementation of an inventory reduction plan. Disruptions in global logistics networks are also impacting our lead times and ability to efficiently and cost-effectively transport products from our third-party suppliers to our facility. As a result, we will continue to review and pursue selected external funding sources to ensure adequate financial resources to execute across the timelines required to achieve these objectives including, but not limited to, the following:

•obtaining financing from traditional or non-traditional investment capital organizations or individuals;

•obtaining funding from the sale of our common stock or other equity or debt instruments; and

•obtaining debt financing with lending terms that more closely match our business model and capital needs.

There can be no assurance that we will obtain funding on acceptable terms, in a timely fashion, or at all. Obtaining additional funding contains risks, including:

•additional equity financing may not be available to us on satisfactory terms, particularly in light of the current price of our common stock, and any equity we are able to issue could lead to dilution for current stockholders and have rights, preferences and privileges senior to our common stock;

•loans or other debt instruments may have terms or conditions, such as interest rate, restrictive covenants, conversion features, refinancing demands, and control or revocation provisions, which are not acceptable to management or the Company’s Board of Directors (the “Board of Directors”); and

•the current environment in the capital markets and volatile interest rates, combined with our capital constraints, may prevent us from being able to obtain adequate debt financing.

Considering both quantitative and qualitative information, we continue to believe that the combination of our plans to ensure adequate external funding, timely re-organizational actions, current financial position, liquid resources, obligations due or

anticipated within the next year, development and implementation of an excess inventory reduction plan, plans and initiatives in our research and development, product development and sales and marketing, and development of potential channel partnerships, if adequately executed, could provide us with an ability to finance our operations through the next twelve months and may mitigate the substantial doubt about our ability to continue as a going concern.

Nasdaq Capital Market Compliance

Our common stock is listed on the Nasdaq Capital Market, which has a minimum bid price of at least $1.00 per share as one of its continued listing requirements. On August 23, 2022, we received a letter from the Nasdaq Listing Qualifications Staff (the “Staff”) notifying us that we were not in compliance with the Nasdaq Listing Rule 5550(a)(2) (the “Bid Price Rule”), because the closing bid price for our common stock was below the minimum $1.00 per share for 30 consecutive business days. In accordance with Nasdaq Listing Rule 5810(c)(3)(A), we were provided an initial period of 180 calendar days, or until February 20, 2023, to regain compliance with the Bid Price Rule. During the initial compliance period, our common stock continued to trade on the Nasdaq Capital Market, but did not satisfy the Bid Price Rule.

On November 16, 2022, we received a letter from the Staff notifying us that we were no longer in compliance with Nasdaq Listing Rule 5550(b)(1), which requires listed companies to maintain stockholders’ equity of at least $2.5 million if they do not meet the alternative compliance standards relating to the market value of listed securities or net income from continuing operations (the “Minimum Stockholders’ Equity Rule”). Our Form 10-Q for the quarterly period ended September 30, 2022 filed on November 10, 2022 reflected that our stockholders’ equity as of September 30, 2022 was $1.5 million. Based on our timely submission of our plan to regain compliance (the “Plan”), Nasdaq granted us an extension through May 15, 2023 to regain compliance with the Minimum Stockholders’ Equity Rule.

On February 21, 2023, we received written notification (the “Bid Price Notification”) from the Staff stating that we had not regained compliance with the Bid Price Rule and our common stock is subject to delisting from Nasdaq. On February 24, 2023, we submitted a request for a hearing before the Nasdaq Hearings Panel (the “Panel”) to appeal the delisting (the “Appeal”). Under Nasdaq rules, the delisting of the Company’s common stock was stayed during the pendency of the Appeal and, during such time, the Company’s common stock continued to be listed on Nasdaq.

On March 28, 2023, the Company received written notification (the “Additional Staff Determination”) from the Staff stating that (i) following the Bid Price Notification, and in accordance with Listing Rule 5810(c)(2)(A), Nasdaq is no longer permitted to consider the stockholders’ equity compliance plan, (ii) the Additional Staff Determination serves as an additional basis for delisting the Company’s common stock from Nasdaq and (iii) the Panel will consider the Additional Staff Determination in rendering a determination regarding the continued listing of the Company’s common stock on Nasdaq.

On April 6, 2023, the Company participated in the Appeal before the Panel. The Company provided an update to the Panel on the Company’s substantial progress made towards the previously submitted Plan during the three months ended March 31, 2023, and requested the Panel grant the Company an exception to (1) re-allow the previously granted exception until May 15, 2023 for the Company to regain compliance with the Minimum Stockholders’ Equity Rule and (2) grant an exception allowing the Company up to 180 days following the Bid Price Notification to regain compliance with the Bid Price Rule by effecting a reverse stock split following stockholder approval at the Company’s 2023 annual meeting of stockholders. On May 1, 2023, the Panel granted the Company’s request (the “Panel Decision”) to continue the Company’s listing on Nasdaq, subject to the following conditions: (1) on or before May 15, 2023, the Company shall file with the SEC its quarterly report for the three months ended March 31, 2023 demonstrating compliance with the Minimum Stockholders’ Equity Rule and (2) on or before July 7, 2023, the Company shall demonstrate compliance with the Bid Price Rule.

On July 27, 2023, the Company received written notification from the Staff stating that the Company has regained compliance with the Bid Price Rule and the Minimum Stockholders’ Equity Rule, as required by the Panel Decision. Pursuant to Nasdaq Listing Rule 5815(d)(4)(B), the Company will be subject to a mandatory panel monitor for a period of one year from July 27, 2023 (the “Monitoring Period”). If, within the Monitoring Period, the Staff finds the Company again out of compliance with the Minimum Stockholders’ Equity Rule, notwithstanding Nasdaq Listing Rule 5810(c)(2), the Company will not be permitted to provide the Staff with a plan of compliance with respect to that deficiency and the Staff will not be permitted to grant additional time for the Company to regain compliance with respect to that deficiency, nor will the Company be afforded an applicable cure or compliance period pursuant to Nasdaq Listing Rule 5810(c)(3). Instead, the Staff will issue a delist determination letter and the Company will have an opportunity to request a new hearing with the initial Panel or a newly convened hearings panel if the initial Panel is unavailable. The Company will have the opportunity to respond and present to the Panel as provided by Nasdaq Listing Rule 5815(d)(4)(C). The Company’s common stock may be at that time delisted from Nasdaq.

As of the date of this Annual Report, the Company believes it has maintained compliance with the Minimum Stockholders’ Equity Rule for continued listing on the Nasdaq Capital Market. To become compliant with the Bid Price Rule, the Company

effected a 1-for-7 reverse stock split to increase the per share trading price of the common stock effective June 16, 2023 (See Note 9, “Stockholders’ Equity”).

However, there can be no assurance that the Company will be able to maintain compliance with the Minimum Stockholders’ Equity Rule, Bid Price Rule, or other Nasdaq listing requirements. If the Company fails to maintain compliance with Nasdaq’s continued listing standards in accordance with the Panel’s decision, the Company’s common stock will be subject to delisting from Nasdaq.

Use of estimates

The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the amounts in our financial statements and accompanying notes. Management bases its estimates on historical experience and various other assumptions believed to be reasonable. Although these estimates are based on management’s best knowledge of current events and actions that may impact us in the future, actual results may vary from the estimates. Estimates include, but are not limited to, the establishment of reserves for accounts receivable, sales returns, inventory obsolescence and warranty claims, the useful lives of property and equipment, valuation allowance for net deferred taxes, and stock-based compensation. The Company began using estimates for its calculation of allowance for doubtful accounts receivable under Accounting Standards Codification (“ASC”) 326, Measurement of Credit Losses on Financial Instruments (“CECL”) commencing in 2023. In addition, estimates and assumptions associated with the determination of the fair value of financial instruments and evaluation of long-lived assets for impairment requires considerable judgment. Actual results could differ from those estimates and such differences could be material.

Basis of presentation

The Consolidated Financial Statements include the accounts of the Company. All significant inter-company balances and transactions have been eliminated. We have prepared the accompanying consolidated financial statements in accordance with U.S. GAAP and pursuant to the rules and regulations of the United States Securities & Exchange Commission (“SEC”).

Revenue

Net sales include revenues from sales of products and shipping and handling charges, net of estimates for product returns. Revenue is measured at the amount of consideration we expect to receive in exchange for the transferred products. We recognize revenue at the point in time when we transfer the promised products to the customer and the customer obtains control over the products. Distributors’ obligations to us are not contingent upon the resale of our products. We recognize revenue for shipping and handling charges at the time the goods are shipped to the customer, and the costs of outbound freight are included in cost of sales. We provide for product returns based on historical return rates. While we incur costs for sales commissions to our sales employees and outside agents, we recognize commission costs concurrent with the related revenue, as the amortization period is less than one year. We do not incur any other incremental costs to obtain contracts with our customers. Our product warranties are assurance-type warranties, which promise the customer that the products are as specified in the contract. Therefore, the product warranties are not a separate performance obligation and are accounted for as described below. Sales taxes assessed by governmental authorities and collected by us are accounted for on a net basis and are excluded from net sales.

A disaggregation of product net sales is presented in Note 11, “Product and Geographic Information.”

Accounts Receivable and Allowance for Credit Losses

Our trade accounts receivable consists of amounts billed to and currently due from customers. Substantially all of our customers are concentrated in the United States. In the normal course of business, we extend unsecured credit to our customers related to the sale of our products. Credit is extended to customers based on an evaluation of the customer’s financial condition and the amounts due are stated at their estimated net realizable value. We maintain allowances for sales returns and doubtful accounts receivable to provide for the estimated number of account receivables that will not be collected. The allowance is based on an assessment of forward-looking customer credit-worthiness and historical payment experience, the age of outstanding receivables, and performance guarantees to the extent applicable. Past due amounts are written off when our internal collection efforts have been unsuccessful, and payments subsequently received on such receivables are credited to the allowance for doubtful accounts. We do not generally require collateral from our customers.

Our standard payment terms with customers are net 30 days from the date of shipment, and we do not generally offer extended payment terms to our customers, but exceptions are made in some cases for major customers or with particular orders.

Accordingly, we do not adjust trade accounts receivable for the effects of financing, as we expect the period between the transfer of product to the customer and the receipt of payment from the customer to be in line with our standard payment terms.

Through November 2022, we utilized a third-party account receivable insurance program with a very high credit worthy insurance company where we had the large majority of the accounts receivable arising during the policy term insured with a portion of self-retention. This third party also provided credit-worthiness ratings and metrics that significantly assisted us in evaluating the credit-worthiness of both existing and new customers. Although the insurance policy is no longer in place, all invoices issued under the previous coverage period are still covered under the policy.

On January 1, 2023, the Company adopted Financial Instruments - Credit Losses (“ASC 326”). The standard adds to U.S. GAAP an impairment model known as the CECL model, which is based on expected losses rather than incurred losses. This standard only impacts the Company’s trade receivables. The Company decided to use the historical loss rate method of valuing its reserve for trade receivables. The allowance for credit losses is reviewed and assessed for adequacy on a quarterly basis. We take into consideration (1) any circumstances of which we are aware of a customer's inability to meet its financial obligations and (2) our judgments as to prevailing economic conditions in the industry and their impact on our customers. If circumstances change, and the financial condition of our customers is adversely affected and they are unable to meet their financial obligations, we may need to take additional allowances, which would result in an increase in our operating expense. This resulted in a $2 thousand adjustment to Retained Earnings as of January 1, 2023 and charges to credit loss expense of $4 thousand for the year ended December 31, 2023.

Pursuant to ASC 606, Revenue Recognition, contract assets and contract liabilities as of the beginning and ending of the reporting periods must be disclosed. Below is the breakout of the Company’s contract assets for such periods:

	December 31, 2023		December 31, 2022		January 01, 2022
Accounts Receivable	$	1,590	$	471	$	1,254
Less: Reserve for Credit Losses/Allowance for Doubtful Accounts	(20)		(26)		(14)
Net Accounts Receivable	$	1,570	$	445	$	1,240

Activity related to our reserve for credit losses was as follows (in thousands):

Allowance for doubtful accounts as of December 31, 2022	$	(26)
Cumulative effect of the implementation of ASC 326	(2)
Reserve for credit losses as of December 31, 2023	(4)
Prior year reclassification of sales returns out of allowance for doubtful accounts	12
Allowance for doubtful accounts as of December 31, 2023	$	(20)

Geographic information

All of our long-lived fixed assets are located in the United States. For the years ended December 31, 2023 and 2022, approximately 100% of sales were attributable to customers in the United States. The geographic location of our net sales is derived from the destination to which we ship the product.

Cash

Cash consists of investments in money market funds and deposits with banks. At December 31, 2023 and 2022, we had cash of $2.0 million and $52 thousand, respectively, on deposit with financial institutions located in the United States.

Inventories

We state inventories at the lower of standard cost (which approximates actual cost determined using the first-in-first-out method) or net realizable value. We establish provisions for excess and obsolete inventories after evaluation of historical sales, current economic trends, forecasted sales, product lifecycles, and current inventory levels. The assessment is both quantitative and qualitative. The reduction in warehouse space following the new lease agreement in July 2022 required both significant disposal of highly reserved, excess and obsolete inventory and a focus on selling down inventory on hand throughout 2022. As a result of our initiatives to sell down inventory, we sold some inventory below cost. The difference between cost and sale price

was applied to remaining inventory and included in lower of cost or market component of the provision for excess and obsolete inventory calculation. We limited inventory and component purchases to top selling products that maintained high inventory turnover. This resulted in a net decrease of our gross inventory levels of $1.0 million and a net increase of excess and obsolete inventory reserves of $26 thousand as compared to 2022.

Please refer to Note 4, “Inventories” for additional information.

Income taxes

As part of the process of preparing the Consolidated Financial Statements, we are required to estimate our income tax liability in each of the jurisdictions in which we do business. This process involves estimating our actual current tax expense together with assessing temporary differences resulting from differing treatment of items, such as deferred revenues, for tax and accounting purposes. These differences result in deferred tax assets and liabilities, which are included in our Consolidated Balance Sheets. We then assess the likelihood of the deferred tax assets being recovered from future taxable income and, to the extent we believe it is more likely than not that the deferred tax assets will not be recovered, or is unknown, we establish a valuation allowance. Significant management judgment is required in determining our provision for income taxes, deferred tax assets and liabilities, and any valuation allowance recorded against our deferred tax assets. At December 31, 2023 and 2022, we have recorded a full valuation allowance against our net deferred tax assets due to uncertainties related to our ability to utilize our deferred tax assets, primarily consisting of certain net operating losses carried forward. The valuation allowance is based upon our estimates of taxable income by jurisdiction and the period over which our deferred tax assets will be recoverable. In considering the need for a valuation allowance, we assess all evidence, both positive and negative, available to determine whether all or some portion of the deferred tax assets will not be realized. Such evidence includes, but is not limited to, recent earnings history, projections of future income or loss, reversal patterns of existing taxable and deductible temporary differences, and tax planning strategies. We continue to evaluate the need for a valuation allowance on a quarterly basis.

Financial Instruments

Fair value measurements

Fair value is defined as the price that would be received to sell an asset or would be paid to transfer a liability in an orderly transaction between market participants on the measurement date. The fair value of financial assets and liabilities are measured on a recurring or non-recurring basis. Financial assets and liabilities measured on a recurring basis are those that are adjusted to fair value each time a financial statement is prepared. Financial assets and liabilities measured on a non-recurring basis are those that are adjusted to fair value when a significant event occurs.

We utilize valuation techniques that maximize the use of available market information and generally accepted valuation methodologies. The fair value hierarchy prioritizes the inputs to valuation techniques used to measure fair value, giving the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements).

The three levels of the fair value hierarchy are described below. We classify the inputs used to measure fair value into the following hierarchy:

Level 1	Unadjusted quoted prices in active markets for identical assets or liabilities.
Level 2	Unadjusted quoted prices in active markets for similar assets or liabilities, or unadjusted quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs other than quoted prices that are observable for the asset or liability.
Level 3	Unobservable inputs for the asset or liability.

The carrying amounts of certain financial instruments including cash, accounts receivable, accounts payable, and accrued liabilities approximate fair value due to their short maturities. Based on borrowing rates currently available to us for loans with similar terms, the carrying value of borrowings under our revolving credit facilities also approximates fair value.

A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. In determining the appropriate levels, we perform a detailed analysis of the assets and liabilities whose fair value is measured on a recurring basis. We review and reassess the fair value hierarchy classifications on a quarterly basis. Changes from one quarter to the next related to the observability of inputs in a fair value measurement may result in a reclassification between fair value hierarchy levels. There were no reclassifications for all periods presented.

Property and equipment

Property and equipment are stated at cost and include expenditures for additions and major improvements. Expenditures for repairs and maintenance are charged to operations as incurred. We use the straight-line method of depreciation over the estimated useful lives of the related assets (generally two to 15 years) for financial reporting purposes. Accelerated methods of depreciation are used for federal income tax purposes. When assets are sold or otherwise disposed of, the cost and accumulated depreciation are removed from the accounts and any gain or loss is reflected in the Consolidated Statements of Operations.

Impairment of Long-lived assets

Long-lived assets are reviewed for impairment whenever events or circumstances indicate the carrying amount may not be recoverable. Events or circumstances that would result in an impairment review primarily include operations reporting losses, a significant change in the use of an asset, or the planned disposal or sale of the asset. The asset would be considered impaired when the future net undiscounted cash flows generated by the asset are less than its carrying value. An impairment loss would be recognized based on the amount by which the carrying value of the asset exceeds its fair value, as determined by quoted market prices (if available) or the present value of expected future cash flows.

Refer to Note 5, “Property and Equipment,” for additional information.

Leases

The Company determines if an arrangement is a lease at its inception. A contract is or contains a lease if the contract conveys the right to control the use of identified property, plant, or equipment (an identified asset) for a period of time in exchange for consideration. Right-of-use (“ROU”) assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. We use our estimated incremental borrowing rate in determining the present value of lease payments considering the term of the lease, which is derived from information available at the lease commencement date. The lease term includes renewal options when it is reasonably certain that the option will be exercised and excludes termination options.

Lease expense for these leases is recognized on a straight-line basis over the lease term. We have elected not to recognize ROU assets and lease liabilities that arise from short-term leases for any class of underlying asset. Operating leases are included in Operating lease, right-of-use-assets, Operating lease liabilities, and Long-term operating lease liabilities in our Consolidated Balance Sheets.

Product development

Product development expenses include salaries, contractor and consulting fees, supplies and materials, as well as costs related to other overhead items such as depreciation and facilities costs. Research and development costs are expensed as they are incurred. We recognized $0.6 million and $1.5 million for the years ended December 31, 2023 and 2022, respectively.

Net loss per share

Basic loss per share is computed by dividing net loss available to common stockholders by the weighted average number of shares of common stock outstanding during the period, excluding the effects of any potentially dilutive securities. Diluted loss per share gives effect to all dilutive potential shares of common stock outstanding during the period. Dilutive potential shares of common stock consist of incremental shares upon the exercise of stock options, warrants and convertible securities, unless the effect would be anti-dilutive.

The following table presents a reconciliation of basic and diluted loss per share computations (in thousands, except per share amounts):

	For the years ended December 31,
	2023		2022
Numerator:
Net loss	$	(4,293)	$	(10,279)
Denominator:
Basic and diluted weighted average common shares outstanding*	3,241		1,158

* Shares outstanding for prior periods have been restated for the 1-for-7 reverse stock split effective June 16, 2023.

As a result of the net loss we incurred for the year ended December 31, 2023, convertible preferred stock representing approximately 25 thousand shares of common stock were excluded from the basic loss per share calculation because their inclusion would have been anti-dilutive.

As a result of the net loss we incurred for the year ended December 31, 2022, convertible preferred stock representing approximately 25 thousand shares of common stock were excluded from the basic loss per share calculation because their inclusion would have been anti-dilutive. We determined the exercise price of the June 2022 Pre-Funded Warrants to be nominal and, as such, have considered the approximately 196,978 shares underlying them, for the purposes of calculating basic EPS. The June 2022 Pre-Funded Warrants were all exercised in July 2022.

Stock-based compensation

We recognize compensation expense based on the estimated grant date fair value under the authoritative guidance. Management applies the Black-Scholes option pricing model to value stock options issued to employees and directors and applies judgment in estimating key assumptions that are important elements of the model in expense recognition. These elements include the expected life of the option, the expected stock-price volatility, and expected forfeiture rates. Compensation expense is generally amortized on a straight-line basis over the requisite service period, which is generally the vesting period.

See Note 9, “Stockholders’ Equity,” for additional information.

Advertising expenses

Advertising expenses are charged to operations in the period incurred. They consist of costs for the placement of our advertisements in various media and the costs of demos provided to potential distributors of our products. Advertising expenses were $6 thousand and $0.3 million for the years ended December 31, 2023 and 2022, respectively.

Product warranties

We warrant our commercial and MMM LED products and controls for periods generally ranging from five to ten years. One product was sold in 2020 with a twenty year warranty. Warranty settlement costs consist of actual amounts expensed for warranty, which are largely a result of the cost of replacement products or rework services provided to our customers. A liability for the estimated future costs under product warranties is maintained for products under warranty based on the actual claims incurred to date and the estimated nature, frequency, and costs of future claims. One contract that expired in 2022 held a warranty of 10 years and drove the downward adjustment to existing warranties. These estimates are inherently uncertain and changes to our historical or projected experience may cause material changes to our warranty reserves in the future. We continuously review the assumptions related to the adequacy of our warranty reserve, including product failure rates, and make adjustments to the existing warranty liability when there are changes to these estimates or the underlying replacement product costs, or the warranty period expires.

The following table summarizes warranty activity for the periods presented (in thousands):

	At December 31,
	2023		2022
Balance at the beginning of the year	$	183	$	295
Accruals for warranties issued	10		24
Adjustments to existing warranties	(43)		(136)
Accrued warranty reserve at the end of the year	$	150	$	183

Recently issued accounting standards

On November 27, 2023, the Financial Accounting Standards Board (“FASB”) issued ASU 2023-07, Segment Reporting-Improvements to Reportable Segment Disclosures, which requires public entities to provide disclosures of significant segment expenses and other segment items. The guidance requires public entities to provide in interim periods all disclosures about a reportable segment’s profit or loss and assets that are currently required annually and also applies to public entities with a single reportable segment. Entities are permitted to disclose more than one measure of a segment’s profit or loss if such measures are used by the chief operating decision-maker to allocate resources and assess performance, as long as at least one of those measures is determined in a way that is most consistent with the measurement principles used to measure the corresponding amounts in the consolidated financial statements. The guidance is applied retrospectively to all periods presented in financial statements, unless it is impracticable, and is effective for fiscal years beginning after December 15, 2023, and for interim periods beginning after December 15, 2024. Early adoption is permitted. This standard will only impact disclosures and will be adopted by the Company on January 1, 2024. We are currently evaluating the impact this ASU will have on our financial statements and disclosures.

On December 14, 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures, which establishes new income tax disclosure requirements in addition to modifying and eliminating certain existing requirements. Under the new guidance, entities must consistently categorize and provide greater disaggregation of information in the rate reconciliation. They must also further disaggregate income taxes paid. The standard is intended to benefit investors by providing more detailed income tax disclosures that would be useful in making capital allocation decisions. The guidance applies to all entities subject to income taxes and is effective for annual periods beginning after December 15, 2024. The guidance will be applied on a prospective basis with the option to apply the standard retrospectively. Early adoption is permitted. The Company plans to adopt this standard on January 1, 2025. We are currently evaluating the impact this ASU will have on our financial statements and disclosures.

Recently adopted accounting standards

In June 2016, the FASB issued Accounting Standard Update No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which significantly changes the accounting for credit losses on instruments within its scope. The new guidance introduces an approach based on expected losses to estimate credit losses on certain financial instruments, including trade receivables, and requires an entity to recognize an allowance based on its estimate of expected credit losses rather than incurred losses. For smaller reporting companies, this standard became effective for interim and annual periods starting after December 15, 2022, and has been adopted by the Company. We adopted this guidance during the first quarter of 2023, and it did not have a material impact on our consolidated balance sheets or results of operations.

Certain risks and concentrations

We have certain customers whose net sales individually represented 10% or more of our total net sales, or whose net trade accounts receivable balance individually represented 10% or more of our total net trade accounts receivable as follows:

•In 2023, two customers accounted for 48% of net sales, with sales to our primary distributor for the U.S. Navy accounting for approximately 35% and sales to a shipbuilder for the U.S. Navy accounting for approximately 13%. In 2022, two customers accounted for 27% of net sales, with sales to our primary distributor for the U.S. Navy accounting for approximately 13% and sales to a regional commercial lighting retrofit company accounting for approximately 14% of net sales.

•At December 31, 2023, one distributor to the U.S. Department of Defense accounted for 74% of our net trade accounts receivable, when combined with our net trade accounts receivable to shipbuilders for the U.S. Navy, total net accounts

receivable related to U.S. Navy sales is 78% of total net accounts receivable. At December 31, 2022, a distributor to the U.S. Department of Defense accounted for 25% of our net trade accounts receivable, when combined with our net trade accounts receivable to shipbuilders for the U.S. Navy, total net accounts receivable related to U.S. Navy sales is 30% of total net accounts receivable.

We require substantial amounts of purchased materials from selected vendors. With specific materials, all of our purchases are from a single vendor. The availability and costs of materials may be subject to change due to, among other things, new laws or regulations, suppliers’ allocation to other purchasers, interruptions in production by suppliers, global health issues such as the COVID-19 pandemic, and changes in exchange rates and worldwide price and demand levels. Our inability to obtain adequate supplies of materials for our products at favorable prices could have a material adverse effect on our business, financial position, or results of operations by decreasing our profit margins and by hindering our ability to deliver products to our customers on a timely basis. Additionally, certain vendors require advance deposits prior to the fulfillment of orders. Deposits paid on unfulfilled orders totaled $0.8 million and $0.6 million at December 31, 2023 and 2022, respectively.

We have certain vendors who individually represented 10% or more of our total expenditures, or whose net trade accounts payable balance individually represented 10% or more of our total net trade accounts payable, as follows:

•One offshore supplier, a related party, accounted for approximately 28.0% of our total expenditures for the twelve months ended December 31, 2023. At December 31, 2023, two offshore suppliers accounted for approximately 16% and 57% (the latter a related party, see Note 13 “Related Party Transactions”) of our trade accounts payable balance.

•One offshore supplier accounted for approximately 16% of our total expenditures for the twelve months ended December 31, 2022. At December 31, 2022, this same offshore supplier accounted for approximately 36% of our trade accounts payable balance.