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Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2022

The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). Any reference in these notes to applicable guidance is meant to refer to the authoritative United States generally accepted accounting principles as found in the Accounting Standard Codification (“ASC”) and Accounting Standards Updates (“ASU”) of the Financial Accounting Standards Board (“FASB”).

Principles of Consolidation

The consolidated financial statements include the accounts of Lyra Therapeutics, Inc. and its wholly owned subsidiary Lyra Therapeutics Security Corporation. All intercompany transactions and balances have been eliminated.

The accompanying consolidated financial statements reflect the application of certain significant accounting policies as described in this note and elsewhere in the accompanying consolidated financial statements and notes.

Use of Estimates

The preparation of the Company’s consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, expenses and related disclosure of contingent assets and liabilities at the date of the consolidated financial statements and reported amounts of expenses during the reporting period. On an ongoing basis, the Company’s management evaluates its estimates, which include but are not limited to management’s judgments of revenue recognition, operating lease right-of-use assets, operating lease liabilities, accrued expenses, valuation of share-based awards and realization of its deferred tax assets. Due to the uncertainty inherent in such estimates, actual results may differ from these estimates.

Segment Information

Operating segments are defined as components of an enterprise about which separate discrete information is available for evaluation by the chief operating decision-maker in deciding how to allocate resources and assess performance. The Company and the Company’s chief operating decision-maker, the Company’s chief executive officer, views the Company’s operations and manages its business as a single operating segment, which is the business of developing targeted medicines to address ears, nose, and throat, or ENT diseases.

Comprehensive Loss

Comprehensive loss includes net loss as well as other changes in stockholders’ equity that result from transactions and economic events other than those with stockholders. For the year ended December 31, 2022, other comprehensive income consisted of unrealized gains and losses, net of taxes from its short-term investments.

As the Company did not have any element of other comprehensive income or loss during the year ended December 31, 2021, its comprehensive loss is equal to its net loss for the year ended December 31, 2021.

Cash and Cash Equivalents

The Company considers all highly liquid investments with a maturity of three months or less when purchased to be cash equivalents. Cash and cash equivalents include cash held in banks, amounts held in money market funds, and highly liquid debt securities. Cash equivalents are stated at cost, which approximates market value.

Restricted Cash

The Company had restricted cash of approximately $1.4 million and $0.3 million as of December 31, 2022 and 2021, respectively. These balances were held unsecured as of December 31, 2022 at the Company’s financial institution to secure the Company’s letters of credit for its facility leases.

The Company’s statements of cash flows include restricted cash with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on such statements. A reconciliation of the cash, cash equivalents, and restricted cash reported within the balance sheet that sum to the total of the same amounts shown in the statement of cash flows is as follows:


	Year Ended December 31,
	2022		2021
Cash and cash equivalents	$	32,550	$	45,747
Restricted Cash		1,392		329
Total	$	33,942	$	46,076

Short-term Investments

Investments in marketable securities are classified as available-for-sale. Available-for-sale securities are measured and reported at fair value using quoted prices in active markets for similar securities. Unrealized gains and losses, net of taxes on available-for-sale securities are reported as a separate component of stockholders’ equity. Premiums or discounts from par value are amortized to investment income over the life of the underlying investment. All of the Company’s available-for-sale securities are available to the Company for use in current operations. As a result, the Company classified all of these securities as current assets even though the stated maturity of some individual securities may be one year or more beyond the balance sheet date.

The cost of securities sold is determined on a specific identification basis, and realized gains and losses are included in other income (expense) within the consolidated statements of operations and comprehensive loss. If any adjustment is required to reflect a decline in the value of the investment that the Company considers to be “other than temporary”, the Company recognizes a charge to the consolidated statement of operations and comprehensive loss. No such adjustments were necessary during the periods presented.

Other Assets

The Company includes certain items within other assets on the consolidated balance sheets. The Company had other assets of approximately $3.3 million and $0.7 million as of December 31, 2022 and 2021, respectively. Other assets are primarily comprised of long-term deposits for our clinical trial agreements as well as prepaid rent related to our new facility lease in Waltham which will be reclassified to a right of use asset upon possession of the space.

Concentrations Of Credit Risk And Off Balance Sheet Risk

Concentrations of Credit Risk and Off-Balance Sheet Risk

Financial instruments that potentially expose the Company to concentrations of credit risk consist primarily of cash and cash equivalents and short-term investments. The Company maintains all its cash and cash equivalents, and short-term investments at two accredited financial institutions, in amounts that exceed federally insured limits.

The Company has no significant off-balance sheet risk such as foreign exchange contracts, option contracts, or other foreign exchange hedging arrangements.

Significant Suppliers

The Company is dependent on third-party manufacturers to supply products for research and development activities in its programs. In particular, the Company relies and expects to continue to rely on a small number of manufacturers to supply it with its requirements for the drug product and associated applicator related to these programs. These programs could be adversely affected by a significant interruption in the supply of the materials required to manufacture the drug product and associated applicator.

Fair Value of Financial Instruments

Fair value is defined as the price that would be received upon sale of an asset or paid to transfer a liability between market participants at a measurement date. ASC Topic 820, Fair Value Measurements (“ASC 820”), establishes a three-level valuation hierarchy for instruments measured at fair value that prioritizes the inputs used to measure fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the observable inputs be used when available. Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the inputs that market participants would use in pricing the asset or liability and are developed based on the best information available in the circumstances. The fair value hierarchy applies only to the valuation inputs used in determining the reported or disclosed fair value of the financial instruments and is not a measure of the investment credit quality. The three levels of the fair value hierarchy established by ASC 820 in order of priority are as follows:

Level 1 -Quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.

Level 2 -Inputs other than quoted prices included within Level 1 that are either directly or indirectly observable, such as quoted market prices, interest rates and yield curves.

Level 3 -Unobservable inputs that are supported by little or no market activity and that are significant to determining the fair value of the assets or liabilities, including pricing models, discounted cash flow methodologies and similar techniques.

To the extent that the valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. 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.

An entity may elect to measure many financial instruments and certain other items at fair value at specified election dates. Subsequent unrealized gains and losses on items for which the fair value option has been elected will be reported in net loss. The Company did not elect to measure any financial instruments or other items at fair value.

Property and Equipment

Property and equipment are stated at cost, less accumulated depreciation. Depreciation expense is recognized using the straight-line method over the estimated useful life of each asset as follows:


		Estimated Useful Life
Laboratory equipment		5 years
Computer software and equipment		3 years
Office furniture and fixtures		7 years
Leasehold improvements		Shorter of useful life or remaining term of related lease

Upon retirement or sale, the cost of the assets disposed of and the related accumulated depreciation are eliminated from the balance sheet and related gains or losses are reflected in the consolidated statement of operations and comprehensive loss. Repairs and maintenance that do not improve or extend the lives of the respective assets are expensed as incurred, while costs of major additions and betterments are capitalized.

Impairment of Long-Lived Assets

Long-lived assets consist of property and equipment. The Company continually evaluates long-lived assets for potential impairment when events or changes in circumstances indicate the carrying value of the assets may not be recoverable. Recoverability is measured by comparing the book values of the assets to the expected future net undiscounted cash flows that the assets are expected to generate. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the book values of the assets exceed their fair value. The Company recorded impairment losses of $1.3 million during the year ended December 31, 2022 and $0 for the year ended December 31, 2021. In October of 2022, the Company terminated an agreement with a contract manufacturer. The Company has funded certain leasehold improvements at the contract manufacturing organizations or CMO’s facility that the Company does not anticipate receiving the benefit of in the future and has accordingly impaired the respective assets.

Leases

Under ASC 842, Leases, the Company determines if an arrangement is or contains a lease at inception. For leases with a term of 12 months or less, the Company does not recognize a right-of-use asset or lease liability. The Company’s operating leases are recognized on its consolidated balance sheets as other noncurrent assets, other current liabilities and other noncurrent liabilities. The Company does not have any finance leases.

Right-of-use assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. Operating lease right-of-use assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. As the Company’s leases typically do not provide an implicit rate, the Company uses an estimate of its incremental borrowing rate based on the information available at the lease commencement date in determining the present value of lease payments. Operating lease right-of-use assets also include the effect of any lease payments made prior to commencement and excludes lease incentives. The lease terms may include options to extend or terminate the lease when it is

reasonably certain that the Company will exercise that option. Lease expense is recognized on a straight-line basis over the lease term.

The Company separates lease and non-lease components when determining which lease payments to include in the calculation of its lease assets and liabilities. Variable lease payments are expensed as incurred. If a lease includes an option to extend or terminate the lease, the Company reflects the option in the lease term if it is reasonably certain it will exercise the option.

Revenue Recognition

Under ASC Topic 606, Revenue from Contracts with Customers (“ASC 606”), an entity recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration that the entity expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that an entity determines are within the scope of ASC 606, the entity performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price, including variable consideration, if any; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation. The Company only applies the five-step model to contracts when it is probable that the entity will collect the consideration to which it is entitled in exchange for the goods or services it transfers to the customer.

Once a contract is determined to be within the scope of ASC 606, the Company assesses the goods or services promised within each contract and determines those that are performance obligations. Arrangements that include rights to additional goods or services that are exercisable at a customer’s discretion are generally considered options. The Company assesses if these options provide a material right to the customer and if so, they are considered performance obligations. The identification of material rights requires judgments related to the determination of the value of the underlying good or service relative to the option exercise price. The exercise of a material right is accounted for as a contract modification for accounting purposes.

The Company assesses whether each promised good or service is distinct for the purpose of identifying the performance obligations in the contract. This assessment involves subjective determinations and requires management to make judgments about the individual promised goods or services and whether such are separable from the other aspects of the contractual relationship. Promised goods and services are considered distinct provided that: (i) the customer can benefit from the good or service either on its own or together with other resources that are readily available to the customer (that is, the good or service is capable of being distinct) and (ii) the entity’s promise to transfer the good or service to the customer is separately identifiable from other promises in the contract (that is, the promise to transfer the good or service is distinct within the context of the contract). In assessing whether a promised good or service is distinct, the Company considers factors such as the research, manufacturing and commercialization capabilities of the collaboration partner and the availability of the associated expertise in the general marketplace. The Company also considers the intended benefit of the contract in assessing whether a promised good or service is separately identifiable from other promises in the contract. If a promised good or service is not distinct, an entity is required to combine that good or service with other promised goods or services until it identifies a bundle of goods or services that is distinct.

The transaction price is then determined and allocated to the identified performance obligations in proportion to their standalone selling prices (“SSP”) on a relative SSP basis. SSP is determined at contract inception and is not updated to reflect changes between contract inception and when the performance obligations are satisfied. Determining the SSP for performance obligations requires significant judgment. In developing the SSP for a performance obligation, the Company considers applicable market conditions and relevant entity-specific factors, including factors that were contemplated in negotiating the agreement with the customer and estimated costs. The Company validates the SSP for performance obligations by evaluating whether changes in the key assumptions used to determine the SSP will have a significant effect on the allocation of arrangement consideration between multiple performance obligations.

If the consideration promised in a contract includes a variable amount, the Company estimates the amount of consideration to which it will be entitled in exchange for transferring the promised goods or services to a customer. The Company determines the amount of variable consideration by using the expected value method or the most likely amount method. The Company includes the unconstrained amount of estimated variable consideration in the transaction price. The amount included in the transaction price is constrained to the amount for which it is probable that a significant reversal of cumulative revenue recognized will not occur. At the end of each subsequent reporting period, the Company re-evaluates the

estimated variable consideration included in the transaction price and any related constraint, and if necessary, adjusts its estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis in the period of adjustment.

If an arrangement includes development and regulatory milestone payments, the Company evaluates whether the milestones are considered probable of being reached and estimates the amount to be included in the transaction price using the most likely amount method. If it is probable that a significant revenue reversal would not occur, the associated milestone value is included in the transaction price. Milestone payments that are not within the Company’s control or the licensee’s control, such as regulatory approvals, are generally not considered probable of being achieved until those approvals are received.

For arrangements with licenses of intellectual property that include sales-based royalties, including milestone payments based on the level of sales, and the license is deemed to be the predominant item to which the royalties relate, the Company recognizes royalty revenue and sales-based milestones at the later of (i) when the related sales occur, or (ii) when the performance obligation to which the royalty has been allocated has been satisfied.

In determining the transaction price, the Company adjusts consideration for the effects of the time value of money if the timing of payments provides the Company with a significant benefit of financing. The Company does not assess whether a contract has a significant financing component if the expectation at contract inception is such that the period between payment by the licensees and the transfer of the promised goods or services to the licensees will be one year or less. The Company assessed its revenue generating arrangement in order to determine whether a significant financing component exists and concluded that a significant financing component does not exist.

The Company then recognizes as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) each performance obligation is satisfied, either at a point in time or over time, and if over time recognition is based on the use of an output or input method.

The Company has not recognized any product revenue to date since its product candidates are in development.

On May 31, 2021, and amended on September 26, 2022, the Company entered into a License and Collaboration Agreement, or, the LianBio License Agreement, with LianBio Inflammatory Limited, or LianBio, to develop and commercialize LYR-210 in Greater China (mainland China, Hong Kong, Taiwan, and Macau), South Korea, Singapore and Thailand. See Note 9 for further discussion of the arrangement.

Research and Development Costs

Research and development costs are expensed as incurred. Research and development expenses include salaries and benefits, materials and supplies, preclinical and clinical trial expenses, manufacturing expenses, stock-based compensation expense, depreciation of equipment, contract services, potential impairment charges related to research and development assets, and other outside expenses. Costs of certain development activities, such as clinical trials, are recognized based on an evaluation of the progress to completion of specific tasks. Payments for these activities are based on the terms of the individual arrangements, which may differ from the pattern of costs incurred, and are reflected in the consolidated financial statements as prepaid or accrued research and development costs. Nonrefundable advance payments for goods or services to be received in the future for use in research and development activities are deferred and capitalized. The capitalized amounts are expensed as the related goods are delivered or the services are performed.

The Company has entered into various research and development contracts with companies both inside and outside of the United States. These agreements are generally cancelable, and related payments are recorded as research and development expenses as incurred. The Company records accruals for estimated ongoing research costs. When evaluating the adequacy of the accrued liabilities, the Company analyzes progress of the studies or trials, including the phase or completion of events, invoices received and contracted costs. Significant judgments and estimates are made in determining the accrued balances at the end of any reporting period. Actual results could differ from the Company’s estimates. The Company’s historical accrual estimates have not been materially different from the actual costs.

Patents Costs

Patent Costs

The Company expenses patent application and related legal costs as incurred and classifies such costs as general and administrative expenses in the accompanying consolidated statements of operations and comprehensive loss.

Accounting for Stock-Based Compensation

The Company accounts for its stock-based compensation in accordance with ASC Topic 718, Compensation—Stock Compensation (“ASC 718”). ASC 718 requires all stock-based payments to employees, non-employees and directors to be recognized as expense in the consolidated statements of operations and comprehensive loss based on their grant date fair values. The Company estimates the fair value of options granted using the Black-Scholes option pricing model for stock option grants to both employees and non-employees. The Company believes the fair value of the stock options granted to non-employees is more reliably determinable than the fair value of the services provided.

The Black-Scholes option-pricing model uses the following inputs: the fair value of the Company’s common stock, the expected volatility of the Company’s common stock, the expected term of the Company’s stock options, the risk-free interest rate for a period that approximates the expected term of the Company’s stock options, and the Company’s expected dividend yield. Prior to our IPO in 2020, the Company has historically been a private company and lacks company-specific historical and implied volatility data. Therefore, the Company has based its computation of expected volatility on the historical volatility of a representative group of public companies with similar characteristics to it, including stage of product development, life science industry focus, length of trading history, and similar vesting provisions. The historical volatility data is calculated based on a period of time commensurate with the expected term assumption. The Company will continue to apply this process until a sufficient amount of historical information regarding the volatility of its own stock price becomes available or until circumstances change, such that the identified entities are no longer representative companies. In the latter case, more suitable, similar entities whose share prices are publicly available would be utilized in the calculation.

The Company uses the simplified method as prescribed by the SEC Staff Accounting Bulletin No. 107, Share-Based Payment, to calculate the expected term for options granted to employees as it does not have sufficient historical exercise data to provide a reasonable basis upon which to estimate the expected term. The expected term is applied to the stock option grant group as a whole, as the Company does not expect substantially different exercise or post-vesting termination behavior among its employee population. For options granted to non-employees, the Company utilizes the contractual term of the share-based payment as the basis for the expected term assumption. The risk-free interest rate is based on a treasury instrument whose term is consistent with the expected term of the stock options. The expected dividend yield is assumed to be zero as the Company has never paid cash dividends and has no current plans to pay any cash dividends on its common stock. The Company’s policy is to recognize forfeitures as they occur.

The Company expenses the fair value of its stock-based compensation awards to employees, non-employees and directors on a straight-line basis over the requisite service period, which is generally the vesting period. The Company records the expense for stock-based compensation awards subject to performance-based milestone vesting when management determines that achievement of the milestone is probable. Management evaluates when the achievement of a performance-based milestone is probable based on the expected satisfaction of the performance conditions as of the reporting date.

Income Taxes

10. Income Taxes

The Company records a provision or benefit for income taxes on pre-tax income or loss based on its estimated effective tax rate for the year. During the years ended December 31, 2022 and 2021, the Company recorded net losses of approximately $55.3 million and $43.5 million, respectively, and, since it maintains a full valuation allowance on its deferred tax assets, the Company did not record an income tax benefit for the years ended December 31, 2022 and 2021.

A reconciliation of income tax expense computed at the statutory federal income tax rate to income taxes reflected in the consolidated financial statements is as follows:


	Year Ended December 31,
	2022			2021
Income tax computed at federal statutory tax rate		21.0	%		21.0	%
Permanent differences		(1.4	)%		(0.3	)%
State taxes, net of federal benefit		4.9	%		4.9	%
Research and development and other tax credits		4.4	%		4.7	%
Change in deferred tax asset valuation allowance		25.8	%		(30.4	)%
Loss of Attributes - IRC 382 Ownership Change		(54.7	)%
Other		—			0.1	%
		—	%		—	%

Net deferred tax assets as of December 31, 2022 and 2021 consist of the following (in thousands):


	December 31,
	2022			2021
Deferred tax assets:
Net operating loss carryforwards	$	25,154		$	46,462
Research and development credits		1,751			7,288
Stock-based compensation		1,295			848
Operating lease liabilities		583			382
Capitalized research & experimental expenditures		9,076			—
Deferred revenue		2,763			—
Other		474			73
Total gross deferred tax assets		41,096			55,053
Less: valuation allowance		(40,512	)		(54,697	)
Total deferred tax assets		584			356
Deferred tax liabilities:
Operating lease right-of-use assets		(584	)		(356	)
Total deferred tax liabilities		(584	)		(356	)
Net deferred taxes	$	—		$	—

As a result of the Internal Revenue Code, or IRC, 382 study performed during the current year the Company has written off $67.6 million of federal net operating losses and $5.7 million of federal research and development credits. As of December 31, 2022, the Company had U.S. federal net operating loss carryforwards of approximately $23.7 million which may be able to offset future income tax liabilities and expire at various dates through 2037 and approximately $88.4 million of federal net operating loss carryforwards that may be carried forward indefinitely. As a result of the IRC 382 study performed during the current year, the Company has written off $125.8 million of state net operating losses and $2.8 million of state research and development credits. As of December 31, 2022, the Company had state net operating loss carryforwards of approximately $25.5 million which may be available to offset future income tax liabilities and expire at various dates through 2042.

As of December 31, 2022 and 2021, the Company had federal research and development tax credit carryforwards of approximately $1.4 million and $5.2 million, respectively, available to reduce future tax liabilities which expire at various dates through 2042. As of December 31, 2022 and 2021, the Company had state research and development tax credit carryforwards of approximately $0.4 million and $2.7 million, respectively, available to reduce future tax liabilities which expire at various dates through 2037. The Company has generated research credits but has not conducted a study to document the qualified activity. This study may result in an adjustment to the Company’s research and development credit carryforwards; however, until a study is completed and any adjustment is known, no amounts are being presented as an uncertain tax position. A full valuation allowance has been provided against the Company’s research and development credits and, if an adjustment is required, this adjustment would be offset by an adjustment to the deferred tax asset established for the research and development credit carryforwards and the valuation allowance.

Under the provisions of the IRC, the net operating loss and tax credit carryforwards are subject to review and possible adjustment by the Internal Revenue Service and state tax authorities. Net operating loss and tax credit carryforwards may become subject to an annual limitation in the event of certain cumulative changes in the ownership interest of significant shareholders over a three-year period in excess of 50%, as defined under Sections 382 and 383 of the Internal Revenue Code, respectively, as well as similar state provisions. The Company has performed an IRC 382 study during the year which resulted in identifying three separate ownership changes that occurred on March 31, 2006, January 17, 2020, and April 13, 2022. Based on these ownership changes and the calculated IRC 382 annual limitations, the Company has written off $67.6 million of federal net operating losses and $5.7 million of federal research and development credits. For state purposes, the Company has written off $125.8 million of state net operating losses and $2.8 million of state research and development credits. The remainder of the attributes have an annual limitation that will impact how the attributes may be utilized in the future.

ASC 740 requires a valuation allowance to reduce the deferred tax assets reported if, based on the weight of the evidence, it is more likely than not that some portion or all of the deferred tax assets will not be realized. After consideration of all the evidence, both positive and negative, the Company has recorded a valuation allowance against its deferred tax

assets at December 31, 2022 and 2021 because the Company’s management has determined that it is more likely than not that the Company will not recognize the benefits of its federal and state deferred tax assets primarily due to its history of cumulative net losses incurred since inception and its lack of commercialization of any products or generation of any revenue from product sales since inception and, as a result, a valuation allowance of approximately $40.5 million and $54.7 million, respectively, has been established at December 31, 2022 and 2021. Management reevaluates the positive and negative evidence at each reporting period. The valuation allowance decreased by approximately $14.2 million during the year ended December 31, 2022 due to the write-off of net operating losses and research and development credits as a result of the IRC 382 study compared to the increase of approximately $13.2 million, respectively, during the year ended December 31, 2021 due primarily to the generation of net operating losses.

The Company has recorded adjustments to deferred tax assets for unrecognized tax benefits as of December 31, 2022 and 2021. The Company’s policy is to record interest and penalties related to uncertain tax positions as part of its income tax provision. As of December 31, 2022 and 2021, the Company had not accrued interest or penalties related to uncertain tax positions and no such amounts have been recognized in the Company’s statement of operations and comprehensive loss. In many cases, the Company’s uncertain tax positions are related to years that remain subject to examination by relevant tax authorities. The statute of limitations for federal and state tax authorities is closed for years prior to December 31, 2019. However, since the Company is in a loss carryforward position, the Company is generally subject to examination by the U.S. federal, state and local income tax authorities for all tax years in which a loss carryforward is available.

Net Loss per Share

The Company has reported losses since inception and has computed basic net loss per share by dividing its net loss by the weighted-average number of common shares outstanding for the period, without consideration for potentially dilutive securities. The Company has computed diluted net loss per common share after giving consideration to all potentially dilutive common shares, including options to purchase common stock, warrants to purchase common stock, outstanding during the period determined using the treasury-stock and if-converted methods, except where the effect of including such securities would be antidilutive. Because the Company has reported net losses since inception, these potential common shares have been anti-dilutive, basic, and diluted loss per share have been the same.

Basic and diluted net loss per share was calculated as follows (in thousands, except share and per share data):


	Year Ended December 31,
	2022			2021
Numerator:
Net loss	$	(55,278	)	$	(43,513	)
Net loss attributable to common stockholders	$	(55,278	)	$	(43,513	)
Denominator:
Weighted-average common shares—basic and diluted		30,235,689			12,986,101
Net loss per share attributable to common stockholders—basic and diluted	$	(1.83	)	$	(3.35	)

The following table sets forth the potentially dilutive securities that have been excluded from the calculation of diluted net loss per share because to include them would be anti-dilutive:


	Year Ended December 31,
	2022		2021
Stock options		4,311,333		1,662,861
Restricted stock units		28,212		—
Total		4,339,545		1,662,861

Recently Issued Accounting Pronouncements

From time to time, new accounting pronouncements are issued by the FASB or other standard setting bodies and adopted by the Company as of the specified date. Unless otherwise discussed, the Company believes that the impact of recently issued standards that are not yet effective will not have a material impact on the Company’s consolidated financial position, results of operations or cash flows.

In June 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (ASU 2016-13). ASU 2016-13 requires that credit losses be reported as an allowance using an expected losses model, representing the entity’s current estimate of credit losses expected to be incurred. The accounting guidance currently in effect is based on an incurred loss model. For available-for-sale debt securities with unrealized losses, this standard now requires allowances to be recorded instead of reducing the amortized cost of the investment. The amendments under ASU 2016-13 are effective for interim and annual fiscal periods beginning after December 15, 2022. The Company is continuing to evaluate the impact of ASU 2016-13 but does not expect the adoption of this ASU to have a material impact on its consolidated financial statements.