NOTE 1 — BASIS OF PRESENTATION

The Company

BIOLASE, Inc. (“BIOLASE” and, together with its consolidated subsidiaries, the “Company”) is a leading provider of advanced laser systems for the dental industry. The Company develops, manufactures, markets, and sells laser systems that provide significant benefits for dental practitioners and their patients. The Company’s proprietary systems allow dentists, periodontists, endodontists, pediatric dentists, oral surgeons, and other dental specialists to perform a broad range of minimally invasive dental procedures, including cosmetic, restorative, and complex surgical applications. The Company’s laser systems are designed to provide clinically superior results for many types of dental procedures compared to those achieved with drills, scalpels, and other conventional instruments. Potential patient benefits include less pain, fewer shots, faster healing, decreased fear and anxiety, and fewer appointments. Potential practitioner benefits include improved patient care and the ability to perform a higher volume and wider variety of procedures and generate more patient referrals.

Use of Estimates

The preparation of these consolidated financial statements in conformity with generally accepted accounting principles in the United States of America (“GAAP”) requires the Company to make estimates and assumptions that affect amounts reported in the consolidated financial statements and the accompanying notes. Significant estimates in these consolidated financial statements include allowances on accounts receivable, inventory, and deferred taxes, as well as estimates for accrued warranty expenses, goodwill and the ability of goodwill to be realized, revenue deferrals, effects of stock-based compensation and warrants, contingent liabilities, and the provision or benefit for income taxes. Due to the inherent uncertainty involved in making estimates, actual results reported in future periods may differ materially from those estimates.

Fair Value of Financial Instruments

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants in the principal market (or, if none exists, the most advantageous market) for the specific asset or liability at the measurement date (referred to as the “exit price”). The fair value is based on assumptions that market participants would use, including a consideration of non-performance risk. Under the accounting guidance for fair value hierarchy, there are three levels of measurement inputs. Level 1 inputs are quoted prices in active markets for identical assets or liabilities. Level 2 inputs are observable, either directly or indirectly. Level 3 inputs are unobservable due to little or no corroborating market data.

The Company’s financial instruments, consisting of cash, cash equivalents, accounts receivable, accounts payable, accrued liabilities, warrants, and the SWK Loan (as defined below) as discussed in Note 6 – Debt – Term Loan, approximate fair value because of the relative short maturity of these items and the market interest rates the Company could currently obtain.

Concentration of Credit Risk, Interest Rate Risk and Foreign Currency Exchange Rate

Financial instruments which potentially expose the Company to a concentration of credit risk consist principally of cash and cash equivalents, and trade accounts receivable. The Company maintains its cash and cash equivalents with established commercial banks. At times, balances may exceed federally insured limits. To minimize the risk associated with trade accounts receivable, management performs ongoing credit evaluations of customers’ financial condition and maintains relationships with the Company’s customers that allow management to monitor current changes in business operations so the Company can respond as needed. The Company does not, generally, require customers to provide collateral before it sells them its products. However, the Company has required certain distributors to make prepayments for significant purchases of products.

Substantially all of the Company’s revenue is denominated in U.S. dollars, including sales to international distributors. Only a small portion of its revenue and expenses is denominated in foreign currencies, principally the Euro and Indian Rupee. The Company’s foreign currency expenditures primarily consist of the cost of maintaining offices, consulting services, and employee-related costs. During the years ended December 31, 2023, 2022, and 2021, the Company did not enter into any hedging contracts. Future fluctuations in the value of the U.S. dollar may affect the price competitiveness of the Company’s products outside the U.S.

Liquidity and Management’s Plans

The Company incurred losses from operations of $17.9 million, $25.3 million, and $16.4 million for the years ended December 31, 2023, 2022, and 2021, respectively, and has not generated positive net cash from operations for the same periods.

As of December 31, 2023, the Company had working capital of approximately $5.2 million. The Company’s principal sources of liquidity consisted of approximately $6.6 million in cash and cash equivalents and $5.5 million of net accounts receivable. As of December 31, 2022, the Company had working capital of approximately $11.2 million, $4.2 million in cash and cash equivalents and $5.8 million of net accounts receivable. The increase in cash and cash equivalents since December 31, 2022 was primarily due $8.5 million net proceeds from the January 2023 public offering, $3.7 million net proceeds from the May 2023 public offering, $3.5 million net proceeds from the September 2023 public offering, $1.1 million for the December 2023 public offering, and $0.8 million proceeds from the exercise of warrants. This increase was partially offset by cash used in operating activities of $14.1 million and $1.3 million in capital expenditures. Refer to Note 8 – Convertible Redeemable Preferred Stock and Stockholders’ Equity (Deficit) for additional information on these common stock issuances and warrant exercises.

The Company’s recurring losses, level of cash used in operations, potential need for additional capital, and the uncertainties surrounding our ability to raise additional capital, raises substantial doubt about its ability to continue as a going concern. The financial statements do not include any adjustments that might be necessary if the Company is unable to continue as a going concern.

In order for the Company to continue operations beyond the next 12 months and be able to discharge its liabilities and commitments in the normal course of business, the Company must increase sales of its products, control or potentially reduce expenses and establish profitable operations in order to generate cash from operations or obtain additional funds when needed.

Although the Company received net proceeds of approximately $16.8 million from public offerings in 2023, the Company may still have to raise additional capital in the future. Additional capital requirements may depend on many factors, including, among other things, the rate at which the Company’s business grows, demands for working capital, manufacturing capacity, continued Nasdaq listing requirements, and any acquisitions that the Company may pursue. The Company expects that it will be required to raise capital through either equity or debt offerings. The Company cannot provide assurance that it will be able to successfully enter into any such equity or debt financings in the future or that the required capital would be available on acceptable terms, if at all, or that any such financing activity would not be dilutive to its’ stockholders.

We intend to attempt to take actions to restore our compliance with Nasdaq’s listing requirements, but we can provide no assurance that we will be able to do so. Any perception that we may not regain compliance or a delisting of our common stock by Nasdaq could adversely affect our ability to attract new investors, decrease the liquidity of the outstanding shares of our common stock, reduce the price at which such shares trade and increase the transaction costs inherent in trading such shares with overall negative effects for our stockholder. In addition, delisting of our common stock from Nasdaq could deter broker-dealers from making a market in or otherwise seeking or generating interest in our common stock, and might deter certain institutions and persons from investing in our common stock. In the event of a de-listing, we would take actions to restore our compliance with the Nasdaq listing requirements, but we can provide no assurance that any such action taken by us would allow our common stock become listed again, stabilize the market price or improve the liquidity of our common stock, prevent our common stock from dropping below the Nasdaq listing requirements.

2022 Reverse Stock Split

At the 2022 annual meeting of BIOLASE stockholders (the "2022 Annual Meeting"), BIOLASE stockholders approved an amendment to BIOLASE’s Restated Certificate of Incorporation, as amended (the "Certificate of Incorporation"), to effect a reverse stock split of BIOLASE common stock, at a ratio ranging from one-for-two (1:2) to one-for-twenty-five (1:25), with the final ratio to be determined by the Board. Immediately after the 2022 Annual Meeting, the Board approved a one-for-twenty-five (1:25) reverse stock split of the outstanding shares of BIOLASE common stock (the “2022 Reverse Stock Split”). On April 28, 2022, BIOLASE filed an amendment to the Certificate of Incorporation with the Secretary of State of the State of Delaware to effect the Reverse Stock Split, which became effective on April 28, 2022. The amendment did not change the number of authorized shares of BIOLASE common stock.

2023 Reverse Stock Split

At a special meeting of BIOLASE stockholders held on July 20, 2023 (the "special meeting"), BIOLASE stockholders approved an amendment to BIOLASE’s Restated Certificate of Incorporation, as amended, to effect a reverse stock split of BIOLASE common stock, at a ratio between one-for-two (1:2) and one-for-one hundred (1:100). Immediately after the special meeting, BIOLASE's board

of directors approved a one-for-one hundred (1:100) reverse stock split of the outstanding shares of BIOLASE common stock (the “2023 Reverse Stock Split”). On July 26, 2023, BIOLASE filed an amendment to the Certificate of Incorporation with the Secretary of State of the State of Delaware to effect the 2023 Reverse Stock Split, which became effective on July 27, 2023. The amendment did not change the number of authorized shares of BIOLASE common stock.

Except as the context otherwise requires, all common stock share numbers, share price amounts (including exercise prices, conversion prices, and closing market prices), shares issued upon the conversion of preferred shares, and shares issued upon the exercise of warrants contained in the consolidated financial statements and notes thereto have been retroactively adjusted to reflect the 2022 Reverse Stock Split and the 2023 Reverse Stock Split.