Summary of significant accounting policies (Policies)	12 Months Ended
Dec. 31, 2023
Accounting Policies [Abstract]
Basis of presentation	Basis of presentation The consolidated financial statements are prepared in accordance with US GAAP as defined by the Financial Accounting Standards Board (“FASB”). The consolidated financial statements include the Company’s wholly-owned subsidiaries and entities under its control. The Company has eliminated all intercompany transactions and accounts. Certain amounts in prior years' financial statements have been reclassified to conform to the current year's presentation.
Use of estimates	Use of estimates The preparation of financial statements in accordance with US GAAP requires management to make estimates and assumptions that affect certain reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Such estimates include, but are not limited to, revenue recognition including estimated timing of the satisfaction of performance obligations, the fair value of stock-based compensation awards, quantitative impairment evaluations of goodwill and recoverability of long-lived assets, and the fair value of contingent consideration. The Company bases its estimates on historical experiences, and other relevant factors that it believes to be reasonable under the circumstances. Actual results could differ from those estimates.
Segment information	Segment information The Company operates as a single operating segment. The Company’s chief operating decision maker, its Chief Executive Officer, manages the Company’s operations on a consolidated basis for the purposes of allocating resources, making operating decisions and evaluating performance.
Cash, cash equivalents	The Company considers all highly liquid investments with an original maturity of three months or less to be cash equivalents. Cash and cash equivalents consist of deposits with commercial banks in checking and interest-bearing accounts, highly liquid money market funds, and U.S. Treasury securities.
Restricted cash	Restricted cash represents amounts pledged as collateral for future property lease payments via standby letters of credit (see Note 9: Commitments and contingencies) and amounts held in escrow related to acquisitions by the Company
Investments	Investments The Company’s short-term investments may include funds invested in highly liquid money market funds, U.S. Treasury securities and corporate debt securities with original maturities at the date of purchase greater than three months but less than one year. These investments are classified as available-for-sale debt securities, which are recorded at fair value based on quoted prices in active markets. If the estimated fair value of a debt security is below its amortized cost basis, the Company evaluates whether it is more likely than not that the Company will be required to sell the security before its anticipated recovery in market value and whether credit losses exist for the related securities. A credit loss exists if the present value of expected cash flows is less than the amortized cost basis of the security. Credit-related losses are recognized as an allowance for credit losses on the balance sheet with a corresponding adjustment to earnings. Unrealized gains and losses that are unrelated to credit deterioration are reported in accumulated other comprehensive loss on the consolidated balance sheets. Purchase premiums and discounts are recognized as interest income using the interest method over the terms of the securities. Realized gains and losses, and declines in fair value deemed to be other than temporary, are reflected in the consolidated statements of operations and comprehensive loss. The Company uses the specific identification method to compute realized gains and losses on investments.
Receivables under development arrangements and allowances for credit losses	Receivables under development arrangements and allowances for credit losses Receivables under development arrangements consist of amounts due from partners for services performed, net of estimates for credit allowance. The Company reviews accounts receivable for credit impairment and regularly analyzes the status of significant past due receivables to determine if any will potentially be uncollectible to estimate the amount of allowance necessary to reduce accounts receivable to its estimated net realizable value. Credit losses are included in selling, general and administrative expenses on the consolidated statements of operations and comprehensive loss. See contract asset discussion in Note 3: Revenue recognition regarding unbilled receivables.
Fair value of financial instruments	Fair value of financial instruments Certain assets and liabilities are carried at fair value under US GAAP. The carrying amounts of cash equivalents, accounts payable, and accrued liabilities approximate their related fair values due to the short-term nature of these instruments. The Company measures certain financial assets at fair value on a recurring basis, including available-for-sale debt securities, which are recorded at fair value based on quoted prices in active markets. None of the Company’s non-financial assets or liabilities are recorded at fair value on a recurring basis. There are significant judgments and estimates inherent in the determination of the fair value of certain liabilities. If the Company had made different assumptions including, among others, those related to the timing and probability of various corporate scenarios, net loss and net loss per common share could have been significantly different.
Concentration risk	Concentration risk Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents, restricted cash, and receivables under development arrangements. The Company maintains its cash and cash equivalents and restricted cash in bank accounts, which at times may exceed federally insured limits.
Property and equipment, net	Property and equipment, net Property and equipment are stated at cost less accumulated depreciation and amortization. Additions and improvements to property and equipment are capitalized. The costs of maintenance and repairs are expensed as incurred. Depreciation and amortization are computed using the straight-line method over the estimated useful lives of the underlying assets, which vary from 3 to 7 years. Leasehold improvements are amortized over the shorter of the term of the lease or the estimated useful lives of the assets. When assets are sold or otherwise disposed of, the cost and related accumulated depreciation or amortization are removed from their respective accounts, and the resulting gain or loss is reported as operating expense in the consolidated statements of operations and comprehensive loss.
Assets held for sale	Assets held for sale The Company classifies its long-lived assets to be sold as held for sale in the period the following conditions are met: (i) management has approved and committed to a plan to sell; (ii) the asset is available for immediate sale in its present condition; (iii) an active program to locate a buyer and other actions required to sell the asset have been initiated; (iv) it is probable that a sale will occur within one year; (v) the asset is being actively marketed for sale at a reasonable price in relation to its current fair value; and (vi) there is a low likelihood of significant changes to the plan or that the plan will be withdrawn. If all of the criteria are met as of the balance sheet date, the assets are presented separately on the consolidated balance sheets as held for sale. The Company initially measures a long-lived asset that is classified as held for sale at the lower of the carrying amount or fair value less costs to sell. Any loss resulting from this measurement is recognized in the period in which the held for sale criteria are met as an asset impairment charge on the consolidated statements of operations and comprehensive loss. Any gains are not recognized until date of sale. The assets are no longer depreciated nor amortized while classified as held for sale. The Company assesses the fair value of a long-lived asset, less any costs to sell, at each reporting period and until the asset is no longer classified as held for sale.
Impairment of long-lived assets	Impairment of long-lived assets Management reviews long-lived assets for possible impairment whenever events or circumstances indicate that the carrying amount of such assets may not be recoverable. Recoverability is measured by comparison of the carrying amount to the future undiscounted net cash flows expected to result from the use of the asset and its eventual disposition. If these estimated cash flows were less than the carrying amount of the asset, an impairment loss would be recognized in order to write down the asset to its estimated fair value and reported as operating expense in the consolidated statements of operations and comprehensive loss.
Goodwill	Goodwill Goodwill is evaluated for impairment on an annual basis as of October 1, or more frequently if an indicator of impairment is present. As part of the impairment evaluation, the Company may elect to perform an assessment of qualitative factors. If this qualitative assessment indicates that it is more likely than not that the fair value of the reporting unit that includes the goodwill is less than its carrying value, then a quantitative impairment test would be prepared to compare this fair value to the carrying value and record an impairment charge if the carrying value exceeds the fair value.
Revenue recognition	Revenue recognition The Company recognizes revenue as control of its products and services are transferred to its customers in an amount that reflects the consideration expected to be received in exchange for those products and services. This process involves identifying the contract with a customer, determining the performance obligations in the contract, determining the contract price, allocating the contract price to the distinct performance obligations in the contract, and recognizing revenue when or as the performance obligations are satisfied. A performance obligation is considered distinct from other obligations in a contract when it provides a benefit to the customer either on its own or together with other resources that are readily available to the customer and is separately identified in the contract. The Company considers a performance obligation satisfied once control of a good or service has been transferred to the customer, meaning the customer has the ability to use and obtain the benefit of the good or service. Technology development revenue includes revenue associated to the drug creation phases of drug creation agreements. The Company refers to its customers as “partners” when describing their relationship in an agreement. Technology development revenue The Company’s drug creation agreements generally include multiple stages of drug creation that combined represent a single performance obligation. These agreements may include options for additional goods and services such as readying the technology to transfer to the partner and licensing terms. The transaction prices for these arrangements include fixed and variable consideration for the single performance obligation as well as variable consideration for success-based achievements. Any variable consideration is constrained to the extent that it is probable that a significant reversal of cumulative revenue will not occur. Primarily all of the Company’s contracts with its partners include an enforceable right to payment. While there is no alternative use to the Company for the asset created, the agreement’s terms vary as to whether an enforceable right to payment exists for performance completed as of that date. The Company measures progress toward the completion of the performance obligations satisfied over time using an input method based on an overall estimate of the effort incurred to date at each reporting period to satisfy a performance obligation. This method provides an appropriate depiction of completed progress toward fulfilling its performance obligations for each respective arrangement. In certain drug creation agreements that require a portion of the contract consideration to be received in advance at the commencement of the contract, such advance payment is initially recorded as a contract liability. Contract assets are included in receivables under development arrangements on the consolidated balance sheets. Collaboration agreements The Company analyzes its drug creation agreements to assess whether such arrangements involve joint operating activities performed by parties that are both active participants in the activities and that are exposed to significant risks and rewards dependent on the commercial success of such activities. Payments to and from the Company’s collaborators are presented within research and development expense on the consolidated statements of operations and comprehensive loss. The Company did not have payments related to such agreements during the years ended December 31, 2023 and 2022.
Income taxes	Income taxes The Company accounts for income taxes using the asset and liability method whereby deferred tax asset and liability accounts are determined based on differences between financial reporting and tax bases of assets and liabilities and are measured using the enacted tax rates and laws that are currently in effect. Valuation allowances are established where necessary to reduce deferred tax assets to the amounts expected to be realized. The Company files income tax returns in federal, state and various foreign tax jurisdictions. The Company recognizes interest and penalties related to income tax matters as a component of tax expense.
Research and development expenses	Research and development expenses Research and development expenses include the cost of materials, personnel-related costs (comprised of salaries, benefits and share-based compensation) for personnel performing research and development functions, consulting fees, equipment and allocated facility costs (including occupancy and information technology). These expenses are exclusive of depreciation and amortization. Research and development activities consist of continued development of the Company’s Integrated Drug Creation Platform, internal asset pipeline programs, and partnered drug creation programs. The Company derives improvements to its platform from each type of activity. Research and development efforts apply to the Company’s platform broadly and across programs.
Stock-based compensation	Stock-based compensation Stock-based compensation includes compensation expense for incentive units, restricted stock, and stock option grants to employees and is measured on the grant date based on the fair value of the award and recognized on a straight-line basis over the requisite service period. The fair value of options to purchase common stock are measured using the Black-Scholes option-pricing model. When determining the grant date fair value of stock-based awards, management considers whether an adjustment is required to the observable market price or volatility of the Company’s common stock that is used in the valuation as a result of material non-public information. The Company accounts for forfeitures as they occur.
Net Loss Per Share	Net Loss Per Share Basic and diluted net loss per common share is calculated by dividing net loss by the weighted-average number of common shares outstanding during the period, without consideration for common stock equivalents. The Company was in a loss position for all periods presented, therefore basic net loss per share and diluted net loss per share are the same for all periods as the inclusion of all potential common securities outstanding would have been anti-dilutive.
Recent accounting pronouncements	Recent accounting pronouncements In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-07, Segment Reporting (Topic 280), Improvements to Reportable Segment Disclosures to improve reportable segment disclosure requirements through enhanced disclosures about significant segment expenses on an interim and annual basis. All disclosure requirements of ASU 2023-07 are required for entities with a single reportable segment. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023, and interim periods for the fiscal years beginning after December 15, 2024, and should be applied on a retrospective basis to all periods presented. Early adoption is permitted. The Company does not expect the adoption of this new guidance to have a material impact on its consolidated financial statements and is currently evaluating the effect of adopting the ASU on its disclosures. In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-09, Income Taxes (Topic 740) - Improvements to Income Tax Disclosures. The ASU requires that an entity disclose specific categories in the effective tax rate reconciliation as well as provide additional information for reconciling items that meet a quantitative threshold. Further, the ASU requires certain disclosures of state versus federal income tax expense and taxes paid. The amendments in this ASU are required to be adopted for fiscal years beginning after December 15, 2024. Early adoption is permitted and the amendments should be applied on a prospective basis. The Company does not expect the adoption of this new guidance to have a material impact on its consolidated financial statements and is currently evaluating the effect of adopting the ASU on its disclosures.

Summary of significant accounting policies (Policies)

12 Months Ended

Dec. 31, 2023

The consolidated financial statements are prepared in accordance with US GAAP as defined by the Financial Accounting Standards Board (“FASB”). The consolidated financial statements include the Company’s wholly-owned subsidiaries and entities under its control. The Company has eliminated all intercompany transactions and accounts. Certain amounts in prior years' financial statements have been reclassified to conform to the current year's presentation.

Use of estimates

The preparation of financial statements in accordance with US GAAP requires management to make estimates and assumptions that affect certain reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Such estimates include, but are not limited to, revenue recognition including estimated timing of the satisfaction of performance obligations, the fair value of stock-based compensation awards, quantitative impairment evaluations of goodwill and recoverability of long-lived assets, and the fair value of contingent consideration. The Company bases its estimates on historical experiences, and other relevant factors that it believes to be reasonable under the circumstances. Actual results could differ from those estimates.

Segment information

The Company operates as a single operating segment. The Company’s chief operating decision maker, its Chief Executive Officer, manages the Company’s operations on a consolidated basis for the purposes of allocating resources, making operating decisions and evaluating performance.

Cash, cash equivalents

The Company considers all highly liquid investments with an original maturity of three months or less to be cash equivalents. Cash and cash equivalents consist of deposits with commercial banks in checking and interest-bearing accounts, highly liquid money market funds, and U.S. Treasury securities.

Restricted cash

Restricted cash represents amounts pledged as collateral for future property lease payments via standby letters of credit (see Note 9: Commitments and contingencies) and amounts held in escrow related to acquisitions by the Company

Investments

The Company’s short-term investments may include funds invested in highly liquid money market funds, U.S. Treasury securities and corporate debt securities with original maturities at the date of purchase greater than three months but less than one year. These investments are classified as available-for-sale debt securities, which are recorded at fair value based on quoted prices in active markets.

If the estimated fair value of a debt security is below its amortized cost basis, the Company evaluates whether it is more likely than not that the Company will be required to sell the security before its anticipated recovery in market value and whether credit losses exist for the related securities. A credit loss exists if the present value of expected cash flows is less than the amortized cost basis of the security. Credit-related losses are recognized as an allowance for credit losses on the balance sheet with a corresponding adjustment to

earnings. Unrealized gains and losses that are unrelated to credit deterioration are reported in accumulated other comprehensive loss on the consolidated balance sheets. Purchase premiums and discounts are recognized as interest income using the interest method over the terms of the securities. Realized gains and losses, and declines in fair value deemed to be other than temporary, are reflected in the consolidated statements of operations and comprehensive loss. The Company uses the specific identification method to compute realized gains and losses on investments.

Receivables under development arrangements and allowances for credit losses

Receivables under development arrangements consist of amounts due from partners for services performed, net of estimates for credit allowance. The Company reviews accounts receivable for credit impairment and regularly analyzes the status of significant past due receivables to determine if any will potentially be uncollectible to estimate the amount of allowance necessary to reduce accounts receivable to its estimated net realizable value. Credit losses are included in selling, general and administrative expenses on the consolidated statements of operations and comprehensive loss. See contract asset discussion in Note 3: Revenue recognition regarding unbilled receivables.

Fair value of financial instruments

Certain assets and liabilities are carried at fair value under US GAAP. The carrying amounts of cash equivalents, accounts payable, and accrued liabilities approximate their related fair values due to the short-term nature of these instruments. The Company measures certain financial assets at fair value on a recurring basis, including available-for-sale debt securities, which are recorded at fair value based on quoted prices in active markets. None of the Company’s non-financial assets or liabilities are recorded at fair value on a recurring basis.

There are significant judgments and estimates inherent in the determination of the fair value of certain liabilities. If the Company had made different assumptions including, among others, those related to the timing and probability of various corporate scenarios, net loss and net loss per common share could have been significantly different.

Concentration risk

Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents, restricted cash, and receivables under development arrangements. The Company maintains its cash and cash equivalents and restricted cash in bank accounts, which at times may exceed federally insured limits.

Property and equipment, net

Property and equipment are stated at cost less accumulated depreciation and amortization. Additions and improvements to property and equipment are capitalized. The costs of maintenance and repairs are expensed as incurred. Depreciation and amortization are computed using the straight-line method over the estimated useful lives of the underlying assets, which vary from 3 to 7 years. Leasehold improvements are amortized over the shorter of the term of the lease or the estimated useful lives of the assets. When assets are sold or otherwise disposed of, the cost and related accumulated depreciation or amortization are removed from their respective accounts, and the resulting gain or loss is reported as operating expense in the consolidated statements of operations and comprehensive loss.

Assets held for sale

The Company classifies its long-lived assets to be sold as held for sale in the period the following conditions are met: (i) management has approved and committed to a plan to sell; (ii) the asset is available for immediate sale in its present condition; (iii) an active program to locate a buyer and other actions required to sell the asset have been initiated; (iv) it is probable that a sale will occur within one year; (v) the asset is being actively marketed for sale at a reasonable price in relation to its current fair value; and (vi) there is a low likelihood of significant changes to the plan or that the plan will be withdrawn. If all of the criteria are met as of the balance sheet date, the assets are presented separately on the consolidated balance sheets as held for sale. The Company initially measures a long-lived asset that is classified as held for sale at the lower of the carrying amount or fair value less costs to sell. Any loss resulting from this measurement is recognized in the period in which the held for sale criteria are met as an asset impairment charge on the consolidated statements of operations and comprehensive loss. Any gains are not recognized until date of sale. The assets are no longer depreciated nor amortized while classified as held for sale. The Company assesses the fair value of a long-lived asset, less any costs to sell, at each reporting period and until the asset is no longer classified as held for sale.

Impairment of long-lived assets

Management reviews long-lived assets for possible impairment whenever events or circumstances indicate that the carrying amount of such assets may not be recoverable. Recoverability is measured by comparison of the carrying amount to the future undiscounted net cash flows expected to result from the use of the asset and its eventual disposition. If these estimated cash flows were less than the carrying amount of the asset, an impairment loss would be recognized in order to write down the asset to its estimated fair value and reported as operating expense in the consolidated statements of operations and comprehensive loss.

Goodwill

Goodwill is evaluated for impairment on an annual basis as of October 1, or more frequently if an indicator of impairment is present. As part of the impairment evaluation, the Company may elect to perform an assessment of qualitative factors. If this qualitative assessment indicates that it is more likely than not that the fair value of the reporting unit that includes the goodwill is less than its carrying value, then a quantitative impairment test would be prepared to compare this fair value to the carrying value and record an impairment charge if the carrying value exceeds the fair value.

Revenue recognition

The Company recognizes revenue as control of its products and services are transferred to its customers in an amount that reflects the consideration expected to be received in exchange for those products and services. This process involves identifying the contract with a customer, determining the performance obligations in the contract, determining the contract price, allocating the contract price to the distinct performance obligations in the contract, and recognizing revenue when or as the performance obligations are satisfied. A performance obligation is considered distinct from other obligations in a contract when it provides a benefit to the customer either on its own or together with other resources that are readily available to the customer and is separately identified in the contract. The Company considers a performance obligation satisfied once control of a good or service has been transferred to the customer, meaning the customer has the ability to use and obtain the benefit of the good or service. Technology development revenue includes revenue associated to the drug creation phases of drug creation agreements. The Company refers to its customers as “partners” when describing their relationship in an agreement.

Technology development revenue

The Company’s drug creation agreements generally include multiple stages of drug creation that combined represent a single performance obligation. These agreements may include options for additional goods and services such as readying the technology to transfer to the partner and licensing terms. The transaction prices for these arrangements include fixed and variable consideration for the single performance obligation as well as variable consideration for success-based achievements. Any variable consideration is constrained to the

extent that it is probable that a significant reversal of cumulative revenue will not occur. Primarily all of the Company’s contracts with its partners include an enforceable right to payment. While there is no alternative use to the Company for the asset created, the agreement’s terms vary as to whether an enforceable right to payment exists for performance completed as of that date.

The Company measures progress toward the completion of the performance obligations satisfied over time using an input method based on an overall estimate of the effort incurred to date at each reporting period to satisfy a performance obligation. This method provides an appropriate depiction of completed progress toward fulfilling its performance obligations for each respective arrangement. In certain drug creation agreements that require a portion of the contract consideration to be received in advance at the commencement of the contract, such advance payment is initially recorded as a contract liability. Contract assets are included in receivables under development arrangements on the consolidated balance sheets.

Collaboration agreements

The Company analyzes its drug creation agreements to assess whether such arrangements involve joint operating activities performed by parties that are both active participants in the activities and that are exposed to significant risks and rewards dependent on the commercial success of such activities. Payments to and from the Company’s collaborators are presented within research and development expense on the consolidated statements of operations and comprehensive loss. The Company did not have payments related to such agreements during the years ended December 31, 2023 and 2022.

Income taxes

The Company accounts for income taxes using the asset and liability method whereby deferred tax asset and liability accounts are determined based on differences between financial reporting and tax bases of assets and liabilities and are measured using the enacted tax rates and laws that are currently in effect. Valuation allowances are established where necessary to reduce deferred tax assets to the amounts expected to be realized.

The Company files income tax returns in federal, state and various foreign tax jurisdictions.

The Company recognizes interest and penalties related to income tax matters as a component of tax expense.

Research and development expenses

Research and development expenses include the cost of materials, personnel-related costs (comprised of salaries, benefits and share-based compensation) for personnel performing research and development functions, consulting fees, equipment and allocated facility costs (including occupancy and information technology). These expenses are exclusive of depreciation and amortization. Research and development activities consist of continued development of the Company’s Integrated Drug Creation Platform, internal asset pipeline programs, and partnered drug creation programs. The Company derives improvements to its platform from each type of activity. Research and development efforts apply to the Company’s platform broadly and across programs.

Stock-based compensation

Stock-based compensation includes compensation expense for incentive units, restricted stock, and stock option grants to employees and is measured on the grant date based on the fair value of the award and recognized on a straight-line basis over the requisite service period. The fair value of options to purchase common stock are measured using the Black-Scholes option-pricing model. When determining the grant date fair value of stock-based awards, management considers whether an adjustment is required to the observable market price or volatility of the Company’s common stock that is used in the valuation as a result of material non-public information. The Company accounts for forfeitures as they occur.

Net Loss Per Share

Basic and diluted net loss per common share is calculated by dividing net loss by the weighted-average number of common shares outstanding during the period, without consideration for common stock equivalents. The Company was in a loss position for all periods presented, therefore basic net loss per share and diluted net loss per share are the same for all periods as the inclusion of all potential common securities outstanding would have been anti-dilutive.

Recent accounting pronouncements

In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-07, Segment Reporting (Topic 280), Improvements to Reportable Segment Disclosures to improve reportable segment disclosure requirements through enhanced disclosures about significant segment expenses on an interim and annual basis. All disclosure requirements of ASU 2023-07 are required for entities with a single reportable segment. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023, and interim periods for the fiscal years beginning after December 15, 2024, and should be applied on a retrospective basis to all periods presented. Early adoption is permitted. The Company does not expect the adoption of this new guidance to have a material impact on its consolidated financial statements and is currently evaluating the effect of adopting the ASU on its disclosures.

In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-09, Income Taxes (Topic 740) - Improvements to Income Tax Disclosures. The ASU requires that an entity disclose specific categories in the effective tax rate reconciliation as well as provide additional information for reconciling items that meet a quantitative threshold. Further, the ASU requires certain disclosures of state versus federal income tax expense and taxes paid. The amendments in this ASU are required to be adopted for fiscal years beginning after December 15, 2024. Early adoption is permitted and the amendments should be applied on a prospective basis. The Company does not expect the adoption of this new guidance to have a material impact on its consolidated financial statements and is currently evaluating the effect of adopting the ASU on its disclosures.