As of JuneSeptember 30, 2019, Customers A, B, C and CD accounted for approximately 51%20%, 20%22%, 44% and 17%10%, respectively, of accounts receivable. As of December 31, 2018, Customers A, B, C and CD accounted for approximately 55%13%, 14%19%, 55% and 13%14%, respectively of accounts receivable.

Allowance for Doubtful Accounts- The Company performs on-going credit evaluations of its customers and adjusts credit limits based upon payment history and the customer’s current credit worthiness, as determined by the review of their current credit information. Collections and payments from customers are continuously monitored. The Company maintains an allowance for doubtful accounts, which is based upon historical experience as well as specific customer collection issues that have been identified. While such bad debt expenses have historically been within expectations and allowances established, the Company cannot guarantee that it will continue to experience the same credit loss rates that it has in the past. If the financial condition of customers were to deteriorate, resulting in an impairment of their ability to make payments, additional allowances may be required.

Inventories- Inventories are stated at the lower of cost (on a first-in, first-out) or net realizable value. The cost of inventory is based on the respective cost of materials. Andrea reviews its inventory reserve for obsolescence on a quarterly basis and establishes reserves on inventories based on the specific identification method as well as a general reserve. Andrea records changes in inventory reserves as part of cost of product revenues.

Long-Lived Assets- Andrea accounts for its long-lived assets in accordance with Accounting Standards Codification (“ASC”) 360 “Property, Plant and Equipment” for purposes of determining and measuring impairment of its long-lived assets (primarily intangible assets) other than goodwill. Andrea’s policy is to periodically review the value assigned to its long-lived assets to determine if they have been permanently impaired by adverse conditions which may affect Andrea whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. If Andrea identifies a permanent impairment such that the carrying amount of Andrea’s long lived assets is not recoverable using the sum of an undiscounted cash flow projection (gross margin dollars from product revenues), the impaired asset is adjusted to its estimated fair value, based on an estimate of future discounted cash flows which becomes the new cost basis for the impaired asset. Considerable management judgment is necessary to estimate undiscounted future operating cash flows and fair values and, accordingly, actual results could vary significantly from such estimates. At JuneSeptember 30, 2019 and December 31, 2018, Andrea concluded that intangibles and long-lived assets were not impaired.

Trade accounts payable and other current liabilities- Trade accounts payable and other current liabilities consisted of the following:

Revenue Recognition- The Company recognizes revenue using the following five-step approach:

This approach includes the evaluation of sales terms, performance obligations, variable consideration, and costs to obtain and fulfill contracts.

The Company disaggregates its revenues into three contract types: (1) product revenues, (2) service related revenues and (3) license revenues and then further disaggregates its revenues by operating segment. Generally, product revenue is comprised of microphones and microphone connectivity product revenues. Product revenue is recognized when the Company satisfies its performance obligation by transferring promised goods to a customer. Product revenue is measured at the transaction price, which is based on the amount of consideration that the Company expects to receive in exchange for transferring the promised goods to the customer. Contracts with customers are comprised of customer purchase orders, invoices and written contracts. Customer product orders are fulfilled at a point in time and not over a period of time. The Company does not have arrangements for returns from customers and does not have any future obligations directly or indirectly related to product resale by customers. The Company has no sales incentive programs. Service related and licensing revenues are recognized based on the terms and conditions of individual contracts using the five step approach listed above, which identifies performance obligations and transaction price. Typically, Andrea receives licensing reports from its licensees approximately one quarter in arrears due to the fact that its agreements require customers to report revenues between 30 to 60 days after the end of the quarter. Under this accounting policy, the licensing revenues reported are not based upon estimates. In addition, service related revenues, which are short-term in nature, are generally performed on a time-and-material basis under separate service arrangements and the corresponding revenue is generally recognized as the services are performed. At JuneSeptember 30, 2019, the Company had $25,341 of deferred revenue, which are advance payments from customers, are expected to be recognized as revenue within one year and are included in trade accounts payable and other current liabilities in the Company’s consolidated balance sheets. See Note 8 for an additional description of the Company’s reportable business segments and the revenue reported in each segment.

Income Taxes- Andrea accounts for income taxes in accordance with ASC 740, “Income Taxes.” ASC 740 requires an asset and liability approach for financial accounting and reporting for income taxes, establishes for all entities a minimum threshold for financial statement recognition of the benefit of tax positions, and requires certain expanded disclosures. The provision for income taxes is based upon income or loss after adjustment for those permanent items that are not considered in the determination of taxable income. Deferred income taxes represent the tax effects of differences between the financial reporting and tax bases of the Company’s assets and liabilities at the enacted tax rates in effect for the years in which the differences are expected to reverse. The Company evaluates the recoverability of deferred tax assets and establishes a valuation allowance when it is more likely than not that some portion or all of the deferred tax assets will not be realized. As of JuneSeptember 30, 2019 and December 31, 2018, the Company had recorded a full valuation allowance. Andrea expects it will reduce its valuation allowance in future periods to the extent that it can demonstrate its ability to utilize the assets. Management makes judgments as to the interpretation of the tax laws that might be challenged upon an audit and cause changes to previous estimates of tax liability. In management’s opinion, adequate provisions for income taxes have been made for all years. If actual taxable income by tax jurisdiction varies from estimates, additional allowances or reversals of reserves may be necessary. Income tax expense consists of taxes payable for the period, withholding of income tax as mandated by the foreign jurisdiction in which the revenues are earned and the change during the period in deferred tax assets and liabilities. The Company has identified its federal tax return and its state tax return in New York as “major” tax jurisdictions. Based on the Company'sCompany’s evaluation, it has concluded that there are no significant uncertain tax positions requiring recognition in the Company'sCompany’s unaudited condensed consolidated interim financial statements. The Company'sCompany’s evaluation was performed for the tax years ended 2016 through 2019. The Company believes that its income tax positions and deductions will be sustained on audit and does not anticipate any adjustments that will result in a material change to its financial position.

Stock-Based Compensation- Andrea accounts for stock-based compensation in accordance with ASC 718, “Compensation – Stock Compensation.” ASC 718 establishes accounting for stock-based awards exchanged for employee services. Under the provisions of ASC 718, share-based compensation cost is measured at the grant date, based on the fair value of the award, and is recognized as expense over the employee’s requisite service period (generally the vesting period of the equity grant). The fair value of the Company’s common stock options are estimated using the Black Scholes option-pricing model with the following assumptions: expected volatility, dividend rate, risk free interest rate and the expected life. The Company expenses stock-based compensation by using the straight-line method.

Use of Estimates- The preparation of unaudited condensed consolidated interim financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities and disclosures of contingent assets and liabilities at the date of the unaudited condensed consolidated interim financial statements and the reported amounts of revenues and expenses during the reporting period.

Management bases its estimates on historical experience and on various assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. The most significant estimates, among other things, are used in accounting for allowances for bad debts, inventory valuation and obsolescence, product warranty, depreciation, deferred income taxes, expected realizable values for assets (primarily intangible assets), contingencies, and revenue recognition as well as the recording and presentation of the Company’s convertible preferred stock. Estimates and assumptions are periodically reviewed and the effects of any material revisions are reflected in the unaudited condensed consolidated interim financial statements in the period that they are determined to be necessary. Actual results could differ from those estimates and assumptions.

Leases - On January 1, 2019 the Company adopted ASU No. 2016-02, “Leases (Topic 842).” In March 2019, the Company also adopted ASU No. 2019-01, “Lease (Topic 842) Codification Improvements.” All significant lease arrangements are generally recognized at lease commencement. Operating lease right-of-use (“ROU”) assets and lease liabilities are recognized at commencement. An ROU asset and corresponding lease liability are not recorded for leases with an initial term of 12 months or less (short term leases) and the Company recognizes lease expense for these leases as incurred over the lease term.

ROU assets represent our right to use an underlying asset during the reasonably certain lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. We primarily use our incremental borrowing rate, based on the information available at commencement date, in determining the present value of lease payments. The operating lease ROU asset also includes any lease payments related to initial direct cost and prepayments and excludes lease incentives. Lease expense is recognized on a straight-line basis over the lease term. See Note 6 for additional Leaselease related disclosure.

Subsequent Events - The Company evaluates events that occurred after the balance sheet date but before the unaudited condensed consolidated interim financial statements are issued. Based upon that evaluation, the Company, other than what is disclosed,except as described below, did not identify any recognized or non-recognized subsequent events that would have required adjustment or disclosure in the unaudited condensed consolidated interim financial statements.

In August 2019, the Board adopted the Andrea Electronics Corporation 2019 Equity Compensation Plan (“2019 Plan”), which was subsequently approved by the shareholders on October 24, 2019. The 2019 Plan authorizes the grant of certain awards, the exercise of which would allow up to an aggregate of 10,000,000 shares of Andrea’s common stock to be acquired by the holders of those awards. Awards can be granted to key employees, officers, directors and consultants. No awards have been granted under the 2019 Plan.

Note 3.Revenue Sharing, Note Purchase Agreement and Long-Term Debt

On December 24, 2014, the Company entered into an Amended and Restated Revenue Sharing and Note Purchase Agreement (the “Revenue Sharing Agreement”) with AND34 Funding LLC (“AND34”) (acting as the “Revenue Participants,” the “Note Purchasers,” and the “Collateral Agent”), which was retroactively effective as of February 14, 2014. Under the Revenue Sharing Agreement, the Company granted AND34 a perpetual predetermined share in the rights of the Company’s specified future revenues from patents (“Monetization Revenues”) owned by the Company (the “Patents”) in exchange for $3,500,000, which was fully repaid as of September 30, 2016 and issued certain notes containing the features described in the Revenue Sharing Agreement (the “Notes”), which were repaid in 2016. In 2016, 2017 and 2019, the parties executed and amended a rider to the Revenue Sharing Agreement (the “Rider”) pursuant to which Andrea agreed to issue and sell to AND34 additional Notes up to an aggregate amount of $11,500,000 (the “Additional Notes”), or such greater amount as AND34 may agree to in its sole discretion. The most recent rider executed in 2019 increased the aggregate principal amount from $7,500,000 to $11,500,000. The Additional Notes have a maturity date of August 31, 2022. The proceeds of the Additional Notes will be used to pay certain expenses related to the Revenue Sharing Agreement and expenses of the Company incurred in pursuing patent monetization. As of JuneSeptember 30, 2019, there was $1,684,422 of Additional Notes principal and $104,375$124,118 PIK Interest outstanding.

Any Monetization Revenues will first be applied 100% to the payment of accrued and unpaid interest on, and then to repay outstanding principal of, the Additional Notes. After the Additional Notes are paid in full, the Monetization Revenues will be allocated amongst the Revenue Participants and the Company in accordance with certain predetermined percentages (based on aggregate amounts received by the Revenue Participants) ranging from 50% to the Revenue Participants to ultimately 20%. Monetization Revenues is defined in the Revenue Sharing Agreement to include, but is not limited to, amounts that the Company receives from third parties with respect to the Patents, which may include new license revenues, certain product revenue, payments and judgments. Monetization Revenues and associated expenses are included in the Company’s Patent Monetization Segment (See Note 8).

The Revenue Sharing Agreement contains many stipulations between the parties regarding the handling of various matters related to the monetization of the Patents including tax treatment. Following an Event of Default under the Revenue Sharing Agreement, the Note Purchasers and Revenue Participants may proceed to protect and enforce their rights by suit or other appropriate proceeding, either for specific performance or the exercise of any power granted under the Revenue Sharing Agreement or ancillary documents including the Additional Notes.

Long-term debt

The unpaid principal amount of the Additional Notes (including any PIK Interest) has an interest rate equal to LIBOR (as defined in the Revenue Sharing Agreement) plus 2% per annum, (totaling 4.59%4.10% and 4.40% at JuneSeptember 30, 2019 and December 31, 2018, respectively); provided that upon and during the continuance of an Event of Default (as set forth in the Revenue Sharing Agreement), the interest rate will increase an additional 2% per annum. Interest may be paid in cash at the option of the Company and otherwise shall be paid by increasing the principal amount of the Additional Notes by the amount of such interest (“PIK Interest”). The Company may prepay the Additional Notes from time to time in whole or in part, without penalty or premium. During the sixnine months ended JuneSeptember 30, 2019 and year ended December 31, 2018, $200,000 and $300,000, respectively, of Additional Notes were issued to AND34. As of JuneSeptember 30, 2019, the remaining amount of Additional Notes that could be issued iswas $3,900,000. Amounts reported as current maturities of long-term debt reflect amounts expected to be paid in the next twelve months.

Note 4.Series C Redeemable Convertible Preferred Stock

The Series C Convertible Preferred Stock had a stated value of $10,000 plus a $1,671 increase in the stated value, which sum is convertible into Common StockAndrea’s common stock at a conversion price of $0.2551. The shares of Series C Convertible Preferred Stock are subject to antidilution provisions, which are triggered in the event of certain stock splits, recapitalizations, or other dilutive transactions. In addition, issuances of common stock at a price below the conversion price of $0.2551, or the issuance of warrants, options, rights, or convertible securities which have an exercise price or conversion price less than that conversion price, other than for certain previously outstanding securities and certain “excluded securities” (as defined in the certificate of amendment), require the adjustment of the conversion price to that lower price at which shares of common stock have been issued or may be acquired. In the event that Andrea issues securities in the future which have a conversion price or exercise price which varies with the market price and the terms of such variable price are more favorable than the conversion price in the Series C Convertible Preferred Stock, the purchasers may elect to substitute the more favorable variable price when making conversions of the Series C Convertible Preferred Stock.

As of JuneSeptember 30, 2019, there were 11.469249 shares of Series C Convertible Preferred Stock outstanding, which were convertible into 524,736 shares of Common StockAndrea’s common stock and had remaining accrued dividends of $19,168.

Note 5.Series D Redeemable Convertible Preferred Stock

The Series D Convertible Preferred Stock is convertible into Common StockAndrea’s common stock at a conversion price of $0.25 per share. The shares of Series D Convertible Preferred Stock are also subject to antidilution provisions, which are triggered in the event of certain stock splits, recapitalizations, or other dilutive transactions. In addition, issuances of common stock at a price below the conversion price then in effect (currently $0.25), or the issuance of warrants, options, rights, or convertible securities which have an exercise price or conversion price less than that conversion price, other than for certain previously outstanding securities and certain “excluded securities” (as defined in the certificate of amendment), require the adjustment of the conversion price to that lower price at which shares of common stock have been issued or may be acquired. In the event that Andrea issues securities in the future which have a conversion price or exercise price which varies with the market price and the terms of such variable price are more favorable than the conversion price in the Series D Convertible Preferred Stock, the purchasers may elect to substitute the more favorable variable price when making conversions of the Series D Convertible Preferred Stock. In addition, the Company is required to use its best efforts to secure the inclusion for quotation on the Over the Counter Bulletin Board for the common stock issuable under the Series D Convertible Preferred Stock and to arrange for at least two market makers to register with the Financial Industry Regulatory Authority. In the event that the holder of the Series D Convertible Preferred Stock and related warrants is unable to convert these securities into Andrea Common Stock, the Company shall pay to each such holder a Registration Delay Payment (as such term is defined in its certificate of amendment). This payment is to be paid in cash and is equal to the product of (i) the stated value of such shares of Series D Convertible Preferred Stock multiplied by (ii) the product of (1) .0005 multiplied by (2) the number of days that sales cannot be made pursuant to the Registration Statement (excluding any days that may be considered grace periods as defined by the Registration Rights Agreement).

As of JuneSeptember 30, 2019, there were 907,144 shares of Series D Convertible Preferred Stock outstanding which were convertible into 3,628,576 shares of Common Stock.Andrea’s common stock.

Note 6.Commitments And Contingencies

Leases

Effective January 1, 2019, the Company adopted the new lease accounting standard using the modified retrospective method of applying the new standard at the adoption date. In addition, we elected the package of practical expedients permitted under the transition guidance within the new standard. This allowed us to carry forward the historical lease classification. Adoption of this standard resulted in the recording of net operating lease right-of-use (“ROU”) assets and corresponding operating lease liabilities of $77,547, with no material cumulative effect adjustment to equity as of the date of adoption. The financial position for reporting periods beginning on or after January 1, 2019 are presented under the new guidance, while prior period amounts are not adjusted and continue to be reported in accordance with previous guidance.

Our operating lease portfolio includes corporate offices, information technology (IT) equipment, and automobiles with remaining lease terms of 1 year to 2 years. Operating lease ROU assets are presented within other assets. The current portion of operating lease liabilities are presented within trade accounts payable and other current liabilities, and the non-current portion of operating lease liabilities are presented separately on the accompanying condensed consolidated balance sheet.

Supplemental balance sheet information related to leases was as follows:

Operating Leases

Employee Related Agreements

In August 2014, the Company entered into an employment agreement with Mr. Andrea, which was subsequently amended on February 19, 2018, August 9, 2018, March 22, 2019 and August 12, 2019. The effective date of the original employment agreement was August 1, 2014 and it currently expires on January 31, 2020, subject to renewal as approved by the Compensation Committee of the Board of Directors. Pursuant to his amended employment agreement, Mr. Andrea will receive an annual base salary of $216,000. The employment agreement provides for quarterly bonuses equal to 5% of the Company’s pre-bonus net after tax quarterly earnings for a total quarterly bonus amount not to exceed $12,500; and annual bonuses equal to 9% of the Company’s annual pre-bonus net after tax earnings in excess of $300,000 up to $3,000,000, and 3% of the Company’s annual pre-bonus adjusted net after tax earnings in excess of $3,000,000. Adjustments to net after tax earnings shall be made to remove the impact of change in recognition of accumulated deferred tax asset value. All bonuses shall be payable as soon as the Company’s cash flow permits. All bonus determinations or any additional bonus in excess of the above will be made in the sole discretion of the Compensation Committee. Under certain circumstances, Mr. Andrea is entitled to a change in control payment equal to twelve months of the Executive'sExecutive’s most recent Base Salarybase salary plus a pro-rated portion of the Executive's most recent annual and four quarterly bonuses paid immediately preceding the Changechange of Control,control, continuation of health and medical benefits for twelve months and immediate vesting of all stock options in the event of a change in control during the term of his agreement and subsequent termination of his employment within twelve months following the change of control. In the event of his termination without cause or resignation with the Company’s consent, Mr. Andrea is entitled to a severance payment equal to two months of his base salary, plus the two months pro-rated portion of his most recent annual and quarterly bonuses, payment of $12,500, the un-paid bonus for the quarter ended September 30, 2017 and a continuation of health insurance coverage for Mr. Andrea his spouse and his dependents for 6 months. At JuneSeptember 30, 2019, the future minimum cash commitments under this agreement aggregate $126,000.$72,000.

On November 11, 2008, the Company entered into an amended and restated change in control agreement with Corisa L. Guiffre, Vice President, Chief Financial Officer and Assistant Corporate Secretary of the Company. The change in control agreement provides Ms. Guiffre with a severance benefit upon termination in connection with a change in control (as defined in the agreement). If Ms. Guiffre is terminated following a change in control, the Company will pay Ms. Guiffre a sum equal to three times Ms. Guiffre’s average annual compensation for the five preceding taxable years. All restrictions on any restricted stock will lapse immediately and incentive stock options and stock appreciation rights, if any, will become immediately exercisable in the event of a change in control of the Company. Additionally, life, medical, dental and disability coverage and payments will be continued for 36 full calendar months following the date of termination.

Legal Proceedings

In September 2016, the Company filed a complaint with the United States District Court for the Eastern District of New York, alleging patent infringement against Apple Inc. (“Apple”) and requesting monetary and injunctive relief (the “New York Litigation”). The New York Litigation was stayed pending final disposition of a parallel case that the Company filed against Apple with the United States International Trade Commission (“ITC”). The ITC’s final decision finding that Apple did not violate the ITC’s statute was issued on March 22, 2018. Apple informed the New York judge of this final decision on May 30, 2018. The ITC’s final decision does not affect Andrea’s right to continue prosecuting the New York Litigation.

In January 2017, Apple filed four (4) petitions for inter partes review (“IPR”) of the Company’s patents asserted in the New York Litigation with the United States Patent and Trademark Office (PTO). The Company filed its Patent Owner’s Preliminary Response in two of these IPR proceedings on May 1, 2017. The PTO instituted the four IPR proceedings requested by Apple on July 24, 2017. The Company filed its Patent Owner’s Response in two of these IPR proceedings on November 7, 2017. On March 19, 2018, both the Company and Apple requested oral argument in these two IPR proceedings, which occurred on April 25, 2018. On July 12, 2018, the PTO issued its final written decisions in those two IPR proceedings, ruling that claims 6-9 of the Company’s U.S. Patent No. 6,363,345 remain valid and enforceable after the PTO’s review. On September 13, 2018, Apple filed its Notice of Appeal of that ruling to the United States Court of Appeals for the Federal Circuit (the “Federal Circuit”). Apple filed its Appeal Brief with the Federal Circuit on January 31, 2019. The Company filed its Response to Apple’s Appeal Brief on March 12, 2019. The Federal Circuit held an oral argument on October 1, 2019, during which both the Company and Apple presented arguments through their attorneys. The Federal Circuit has not yet issued a decision on Apple’s appeal.

On July 20, 2018, after the PTO’s final written decisions, the Company informed the New York judge of the status of the PTO proceedings, and its intention to move forward with the New York Litigation regarding claims 6-9 of the Company’s U.S. Patent No. 6,363,345. Apple asked the New York judge to maintain the previously entered stay of the New York Litigation pending its appeal of the PTO holdings to the Federal Circuit. At the New York judge’s request, the parties fully briefed their competing arguments regarding whether to lift or maintain the stay and submitted those briefs to the New York judge on December 13, 2018. On August 6, 2019, the New York judge determined to maintain the stay pending the final resolution of the IPR proceedings by the Federal Court.Circuit.

Andrea intends to vigorously prosecute the New York Litigation and Apple’s appeal of the IPR results to the Federal Circuit.

Note 7.Stock Plans and Stock Based Compensation

In August 2019, the Board adopted the Andrea Electronics Corporation 2019 Equity Compensation Plan (“2019 Plan”), which was subsequently approved by the shareholders on October 24, 2019. The 2019 Plan authorizes the granting of awards, the exercise of which would allow up to an aggregate of 10,000,000 shares of Andrea’s common stock to be acquired by the holders of those awards. Awards can be granted to key employees, officers, directors and consultants. No awards have been granted under the 2019 Plan.

In October 2006, the Board adopted the Andrea Electronics Corporation 2006 Equity Compensation Plan (“2006 Plan”), which was subsequently approved by the shareholders. The 2006 Plan, as amended, authorized the granting of awards, the exercise of which would allow up to an aggregate of 18,000,000 shares of Andrea’s Common Stock to be acquired by the holders of those awards. Awards could be granted to key employees, officers, directors and consultants. As the 2006 Plan has expired, no further awards will be granted under the 2006 Plan. At June 30, 2019, Andrea did not have any authorized and unexpired stock-based employee compensation plans.

The stock option awards granted under the 2006 Plan have been granted with an exercise price equal to the market price of the Company’s stock at the date of grant with vesting periods of up to four years and 10-year contractual terms. The fair values of each stock option grant are estimated on the date of grant using the Black-Scholes option-pricing model that uses the weighted-average assumptions noted in the following table. Expected volatilities are based on implied volatilities from historical volatility of the Company’s stock. The expected term of options granted represents the period of time that options granted are expected to be outstanding. The risk-free rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant.

Option activity during the sixnine months ended JuneSeptember 30, 2019 is summarized as follows:

During the three and sixnine months ended JuneSeptember 30, 2019, no additional options vested nor were any options exercised forfeited or cancelled.forfeited. Based on the JuneSeptember 30, 2019 fair market value of the Company’s common stock of $0.05$0.04 per share, there is no aggregate intrinsic value for the 10,008,0018,100,500 options outstanding and 8,847,3516,939,850 options exercisable.

Total compensation expense recognized related to stock option awards was $4,836 and $13,335$12,779 for the three months ended JuneSeptember 30, 2019 and 2018, respectively. In the accompanying unaudited condensed consolidated statement of operations for the three months ended JuneSeptember 30, 2019, $4,269 of compensation expense is included in general, administrative and selling expenses and $567 of compensation expense is included in research and development expenses. In the accompanying unaudited condensed consolidated statement of operations for the three months ended JuneSeptember 30, 2018, $11,487$10,931 of compensation expense is included in general, administrative and selling expenses and $1,848 of compensation expense is included in research and development expenses.

Total compensation expense recognized related to stock option awards was $9,672$14,508 and $26,670$39,449 for the sixnine months ended JuneSeptember 30, 2019 and 2018, respectively. In the accompanying unaudited condensed consolidated statement of operations for the sixnine months ended JuneSeptember 30, 2019, $8,538$12,807 of compensation expense is included in general, administrative and selling expenses and $1,134$1,701 of compensation expense is included in research and development expenses. In the accompanying unaudited condensed consolidated statement of operations for the sixnine months ended JuneSeptember 30, 2018, $22,974$33,905 of compensation expense is included in general, administrative and selling expenses and $3,696$5,544 of compensation expense is included in research and development expenses.

As of JuneSeptember 30, 2019, there was $8,038$3,202 of total unrecognized compensation costs related to unvested share-based compensation arrangements granted under the 2006 Plan which is expected to be recognized in 2019.

Note 8.Segment Information

Andrea follows the provisions of ASC 280 “Segment Reporting.” Reportable operating segments are determined based on Andrea’s management approach. The management approach, as defined by ASC 280, is based on the way that the chief operating decision-maker organizes the segments within an enterprise for making operating decisions and assessing performance. While Andrea’s results of operations are primarily reviewed on a consolidated basis, the chief operating decision-maker also manages the enterprise in two segments: (i) Patent Monetization and (ii) Andrea DSP Microphone and Audio Software Products. Patent Monetization includes Monetization Revenues (as defined in our Amended and Restated Revenue Sharing Agreement). Andrea DSP Microphone and Audio Software Products primarily include products based on the use of some, or all, of the following technologies: Andrea Digital Super Directional Array microphone technology (“DSDA”), Andrea Direction Finding and Tracking Array microphone technology (“DFTA”), Andrea PureAudio noise filtering technology, and Andrea EchoStop, an advanced acoustic echo cancellation technology.

The following represents selected unaudited condensed consolidated interim financial information for Andrea’s segments for the three and sixnine month periods ended JuneSeptember 30, 2019 and 2018 and the fiscal year ended December 31, 2018.