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75030 - Statement - Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited)
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75040 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Unaudited)
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75060 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)
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75070 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) 2
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995455 - Disclosure - Description of Business
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995465 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies
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995475 - Disclosure - Fair Value Measurements
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995505 - Disclosure - Licensing Agreements
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995515 - Disclosure - Stockholders' Equity
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995525 - Disclosure - Common Stock Warrants
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995535 - Disclosure - Stock-Based Compensation
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995545 - Disclosure - Operating Leases
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995555 - Disclosure - Income Taxes
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995565 - Disclosure - Net Loss per Common Share
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995575 - Disclosure - Commitments and Contingencies
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995585 - Disclosure - Related Parties
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995595 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Policies)
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995605 - Disclosure - Fair Value Measurements (Tables)
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995625 - Disclosure - Segment Disclosure (Tables)
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995635 - Disclosure - Stockholders' Equity (Tables)
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995645 - Disclosure - Stock-Based Compensation (Tables)
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995655 - Disclosure - Operating Leases (Tables)
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995665 - Disclosure - Net Loss per Common Share (Tables)
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995685 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details)
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995695 - Disclosure - Fair Value Measurements - Summary of Financial Instruments Carried at Fair Value on Recurring Basis (Details)
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995705 - Disclosure - Fair Value Measurements - Additional Information (Details)
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995725 - Disclosure - Marketable Debt Securities - Interest and Investment Income (Details)
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995735 - Disclosure - Segment Disclosure - Additional Information (Details)
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995745 - Disclosure - Segment Disclosure - Summary of Significant Expenses Related to The Life Science Segment (Details)
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995755 - Disclosure - Segment Disclosure - Summary of Significant Expenses Related to The Life Science Segment (Parenthetical) (Details)
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995765 - Disclosure - License Agreements - Additional Information (Details)
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995775 - Disclosure - Stockholders' Equity - Additional Information (Details)
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995785 - Disclosure - Stockholders' Equity - Common Stock Reserved for Issuance (Details)
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995795 - Disclosure - Common Stock Warrants - Additional Information (Details)
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995805 - Disclosure - Stock-Based Compensation - Additional Information (Details)
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995815 - Disclosure - Stock-Based Compensation - Summary of Stock Option Activity (Details)
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995825 - Disclosure - Stock-Based Compensation - Schedule of Estimated Fair Value Assumptions (Details)
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995835 - Disclosure - Stock-Based Compensation - Summary of Restricted Stock Awards and Restricted Stock Units (Details)
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995845 - Disclosure - Stock-Based Compensation - Summary of Restricted Stock Awards and Restricted Stock Units (Parenthetical) (Details)
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995855 - Disclosure - Stock-Based Compensation - Summary of Total Stock-based Compensation Expense (Details)
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995865 - Disclosure - Operating Leases - Additional Information (Details)
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995875 - Disclosure - Operating Leases - Components of Lease Expense (Details)
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995885 - Disclosure - Income Taxes - Additional Information (Details)
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995895 - Disclosure - Net Loss per Common Share - Anti-Dilutive Effect Excluded from Computation of Diluted Net Loss Per Share Attributable to Common Stockholders (Details)
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995905 - Disclosure - Net Loss per Common Share - Anti-Dilutive Effect Excluded from Computation of Diluted Net Loss Per Share Attributable to Common Stockholders (Parenthetical) (Details)
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995915 - Disclosure - Related Parties - Additional Information (Details)
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Number of common shares issued upon conversion of preferred stock
Number of Common Shares Issued Upon Conversion of Preferred Stock
Number of common shares issued upon conversion of preferred stock.
Finance lease, payments
Finance Lease, Liability
Finance Lease, Liability, Total
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Preferred stock, shares issued
Preferred Stock, Shares Issued
Preferred Stock, Shares Issued, Total
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
Summary of Financial Instruments Carried at Fair Value on Recurring Basis
Increase (Decrease) in Accounts Payable
Accounts payable
Increase (Decrease) in Accounts Payable, Total
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Noncash investing and financing activities:
Common Stock Warrant [Text Block]
Common stock warrant.
Common Stock Warrants
Plan Name [Axis]
Plan Name
Research and Development Expense [Abstract]
Research and development
Equity [Abstract]
Entity Current Reporting Status
Entity Current Reporting Status
Operating Expenses [Abstract]
Operating expenses :
Milestone and Royalty Incurred
Milestone and royalty incurred.
Milestone and royalty occurred
Fair Value, Inputs, Level 2 [Member]
Level 2
Commitments and Contingencies Disclosure [Text Block]
Commitments and Contingencies
Common Stock, Shares Authorized
Common stock, shares authorized
Product and Service [Axis]
Document Fiscal Period Focus
Document Fiscal Period Focus
Milestone and royalties receivable
Milestone And Royalties Receivable
Milestone and royalties receivable.
Entity Shell Company
Entity Shell Company
Cash and Cash Equivalent
Cash and Cash Equivalents, at Carrying Value, Ending Balance
Cash and Cash Equivalents, at Carrying Value, Beginning Balance
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value, Total
Research and Development Arrangement, Contract to Perform for Others, Type [Axis]
Research and Development Arrangement, Contract to Perform for Others, Type
Common Stock, Shares, Issued
Common stock, shares issued
Common Stock, Shares, Issued, Total
Pre-Funded Warrants issued to purchase aggregate number of shares of common stock
Asset Class [Domain]
Statement [Table]
Statement [Table]
Milestone and royalties payments received post acquisition
Milestone And Royalties Payments Received Post Acquisition
Milestone and royalties payments received post acquisition.
Operating Income (Loss) [Abstract]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
Weighted-average fair value of options granted
Weighted-average grant-date fair value of options granted
Statement [Line Items]
Statement [Line Items]
Business Combination [Domain]
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price
Weighted Average Exercise Price, Expired
Entity Filer Category
Entity Filer Category
Liabilities and Equity
Total liabilities and stockholders' equity
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price
Weighted Average Exercise Price, Exercisable at March 31, 2026
Cash and Cash Equivalents, Fair Value Disclosure
Cash Equivalents
Cash equivalents
Less: valuation allowance
Valuation allowance
Valuation allowance
Valuation allowance
Deferred Tax Assets, Valuation Allowance, Total
Purchase price per share
Shares Issued, Price Per Share
Common stock public offering price per share
Effective tax rate
Effective income tax rate%
Effective income tax rate%
Effective tax rate from continuing operations
Stock Options Outstanding
Investment Income, Interest
Interest income
Income Tax Jurisdiction [Axis]
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]
Summary of Significant Expense related to the Life Science Segment
Average sale price per share.
Average Sale Price Per Share
Average sale price per share
Underwriting commission and issuance costs
Debt Issuance Costs, Net
Debt Issuance Costs, Net, Total
Shares, warrants, and replacement stock options and restricted stock units issued for acquisition.
Shares, Warrants, And Replacement Stock Options And Restricted Stock Units Isued For Acquisition
Shares, warrants, and replacement stock options and restricted stock units ("RSUs") issued for acquisition of Apexigen, Inc.
Related Party
Related Party [Member]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested but unsettled in period.
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Vested but Unsettled in Period
Number of Shares, Vested but unsettled
Consecutive trading days
Class Of Warrant Or Right Redemption Of Warrants Or Rights Threshold Consecutive Trading Days
Class of warrant rr right redemption of warrants or rights threshold consecutive trading days.
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross
Number of Options, Granted
Two Thousand Twenty Two Equity Incentive Plan [Member]
Two Thousand Twenty Two Equity Incentive Plan.
2022 Equity Incentive Plan
Increase (Decrease) in Other Operating Assets and Liabilities, Net
Increase (Decrease) in Other Operating Assets and Liabilities, Net, Total
Other
Tax cuts and jobs act, deferred tax asset.
Tax Cuts and Jobs Act, Deferred Tax Asset
Deferred tax asset
Earnings Per Share, Basic, Total
Earnings Per Share, Basic
Net loss per common share - basic
Stock options two thousand twenty two, two thousand twenty one and two thousand nineteen plan.
Stock Options Two Thousand Twenty Two, Two Thousand Twenty One and Two Thousand Nineteen Plan [Member]
Stock Options 2022 Plan, 2021 Plan and 2019 Plan
Exercise of pre-funded warrants
Exercise of pre-funded warrants, Value
Exercise of pre-funded warrants, Value
Non-Vested and Unsettled Restricted Stock Units
Non-vested And Unsettled Restricted Stock Units [Member]
Non-vested and unsettled restricted stock units.
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number
Number of Options, Outstanding, Beginning Balance
Number of Options, Outstanding, Ending Balance
Number of options to purchase common stock
Apexigen Equity Incentive Plan.
Apexigen Equity Incentive Plan [Member]
Apexigen Equity Incentive Plan
Liabilities, Current
Total current liabilities
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Adjustments to reconcile net loss to net cash used in operating activities:
Personnel-related expenses excluding stock-based compensation
Personnel Related Expenses Excluding Stock Based Compensation [Member]
Personnel related expenses excluding stock based compensation.
Derivative liability statement of financial position extensible enumeration not disclosed flag.
Derivative Liability Statement Of Financial Position Extensible Enumeration Not Disclosed Flag
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Summary of Changes in Level 3 Fair Value Measurements
Federal
Domestic Tax Jurisdiction [Member]
Credit carryovers expiration year
Tax credit carryforward expiration year.
Consolidation Items [Domain]
Equity, Attributable to Parent [Abstract]
Stockholders' equity:
Entity Small Business
Entity Small Business
Prefunded warrants issued price per warrant.
Prefunded Warrants Issued Price Per Warrant
Purchase price per warrant
Retained Earnings (Accumulated Deficit)
Retained Earnings (Accumulated Deficit), Ending Balance
Retained Earnings (Accumulated Deficit), Beginning Balance
Accumulated deficit
Retained Earnings (Accumulated Deficit), Total
Tax withholding payments related to net settlement of restricted common stock
Restricted Stock, Value, Shares Issued Net of Tax Withholdings
Issuance of restricted common stock, net of tax withholdings
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period
Number of Options, Forfeited
Apexigen
Apexigen, Inc.
Apexigen, Inc. [Member]
Apexigen, Inc.
Proceeds from issuance of common stock in initial public offering, net of issuance costs
Proceeds from Issuance Initial Public Offering
Net proceeds from issuance initial public offering
Basis of presentation and summary of significant accounting policies.
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value
Aggregate intrinsic value of stock options exercised
Extra milestone payment for which derivative liability recognized
Extra Milestone Payment for Which Derivative Liability Recognized
Extra milestone payment for which derivative liability recognized.
Share-Based Payment Arrangement [Text Block]
Stock-Based Compensation
Common stock issued to university.
Common Stock Issued To University
Common stock issued to university
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Redemption of marketable debt securities.
Redemption of marketable debt securities
Redemption Of Marketable Debt Securities
Leases [Abstract]
Amendment Flag
Amendment Flag
Replacement of warrants
Replacement Of Warrants
Replacement of warrants.
Product and Service [Domain]
Pfizer license agreement.
Pfizer License Agreement [Member]
Pfizer License Agreement
Liabilities and Equity [Abstract]
Liabilities and Stockholders' Equity
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Net cash used in operating activities
Operating lease liabilities
Increase (Decrease) in Operating Lease Liability
Two thousand twenty one equity incentive plan.
Two Thousand Twenty One Equity Incentive Plan [Member]
2021 Equity Incentive Plan
Common Stock [Member]
Common Stock
Credit carryovers
Redemption notice period
Redemption Notice Period
Redemption notice period.
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Weighted Average Exercise Price, Granted
Basis of presentation and summary of significant accounting policies.
Basis Of Presentation And Summary Of Significant Accounting Policies [Table]
Basis Of Presentation And Summary Of Significant Accounting Policies [Table]
Pre-Funded Warrants
Pre Funded Warrants [Member]
Pre Funded Warrants.
Pre-Funded Warrant Shares
Debt Securities, Available-for-Sale [Line Items]
Issuance of common stock in private placement, net of offering costs.
Issuance Of Common Stock In Private Placement, Net Of Offering Costs
Issuance of common stock in private placement, net of offering costs (See Note 7) (Shares)
Issuance of common stock in private placement, net of offering costs (Shares)
Research and Development Arrangement, Contract to Perform for Others, Type [Domain]
Research and Development Arrangement, Contract to Perform for Others, Type
Entity Address, Address Line One
Entity Address, Address Line One
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Schedule of Estimated Fair Value Assumptions
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV
Earnings Per Share [Abstract]
Operating Lease, Right-of-Use Asset
Operating lease right-of-use asset
Stock Based Compensation [Member]
Stock based compensation.
Stock-based compensation
Purchase of marketable debt securities
Payments to Acquire Debt Securities, Available-for-Sale
Document Type
Document Type
Entity Central Index Key
Entity Central Index Key
Summary of Marketable Securities Classified as Available-for-sale
Debt Securities, Available-for-Sale [Table Text Block]
University license agreement.
University License Agreement [Member]
University License Agreement
Investments, Debt and Equity Securities [Abstract]
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
Net decrease in cash, cash equivalents and restricted cash
Subsequent Event Type [Domain]
Subsequent Event Type
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Anti-dilutive effect excluded from computation of diluted net loss per share attributable to common stockholders
Common Stock, Par or Stated Value Per Share
Common stock, par value per share
Related party transaction expenses incurred
Operating Costs and Expenses
Operating Costs and Expenses, Total
Proceeds From Stock Issued Under ATM, Net
Proceeds from stock issued under atm, net.
Proceeds from issuance of common stock pursuant to ATM program, net of offering costs
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term
Weighted Average Remaining Contractual Term, Outstanding
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum
Expected volatility, maximum
Convertible preferred stock shares issued value.
Convertible Preferred Stock Shares Issued Value
Issuance of convertible preferred stock value
Marketable debt securities, Amortized Cost
Debt Securities, Available-for-Sale, Amortized Cost
Marketable debt securities, Aggregate Fair Value
Marketable debt securities
Debt Securities, Available-for-Sale
Number of Units, Replacement RSU Awards
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Replacement in Period
Share-based compensation arrangement by share-based payment award, equity instruments other than options, replacement in period.
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period
Stock options exercised (Shares)
Number of Options, Exercised
State and Local Income Tax Expense (Benefit), Continuing Operations
State and Local Income Tax Expense (Benefit), Continuing Operations, Total
State income tax provision
Common stock warrants.
Common Stock Warrants
Common Stock Warrants [Member]
Total Accrued expenses and other current liabilities
Accrued Liabilities, Current
Accrued expenses and other current liabilities
Stock Issued During Period, Value, Restricted Stock Award, Gross
Vesting of restricted common stock, net of tax withholdings
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Current Fiscal Year End Date
Current Fiscal Year End Date
Estimated cost to purchase licensed products.
Estimated Cost To Purchase Licensed Products
Estimated cost to purchase licensed products
Document Quarterly Report
Incremental stock-based compensation expense recognized
Incremental Stock-Based Compensation Expense Recognized
Incremental stock-based compensation expense recognized.
Entity Address, State or Province
Entity Address, State or Province
Accretion of discount, net
Investment Income, Net, Amortization of Discount and Premium
Investment Income, Net, Amortization of Discount and Premium, Total
Number of Units, Outstanding, Ending Balance
Number of Units, Outstanding, Beginning Balance
Number of option to purchase restricted common stock
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Preferred stock, shares outstanding
Preferred Stock, Shares Outstanding
Preferred Stock, Shares Outstanding, Ending Balance
Preferred Stock, Shares Outstanding, Beginning Balance
Comprehensive loss
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
ATM Offering Program
At The Market Offering Program [Member]
At the market offering program.
Marketable debt securities, Unrealized Gains
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax
Common stock issuable upon conversion
Common stock reserved for future issuance
Number of common shares reserved and autorized for future issuance
Licensing agreements.
Licensing Agreements [Text Block]
Licensing Agreements
Marketable Securities, Current
Marketable debt securities
Summary of Total Stock-based Compensation Expense
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
Stock options exercised
Stock Issued During Period, Value, Stock Options Exercised
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive loss:
Nature of Business.
Nature Of Business Policy [Text Block]
Nature of Business
Restricted Cash
Restricted Cash Fair Value Disclosure
Restricted cash fair value disclosure.
Subsequent Event [Member]
Subsequent Event
Operating loss carryforwards relating to prior tax years before tax
Operating Loss Carryforwards Relating to Prior Tax Years Before Tax
Operating loss carryforwards relating to prior tax years before tax.
Clinical Product Candidates [Member]
Clinical product candidates.
Clinical product candidates
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized
Number of additional shares authorized
Toray Sublicense Agreement
Toray Sublicense Agreement [Member]
Toray sublicense agreement.
Antidilutive Securities [Axis]
Antidilutive Securities
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period
Number of Options, Expired
Basis of Presentation and Significant Accounting Policies [Text Block]
Basis of Presentation and Summary of Significant Accounting Policies
Gross proceeds from sale of shares
Gross Proceeds from Issuance of Common Stock
Gross proceeds from issuance of common stock.
Temporary equity issuance costs.
Temporary Equity Issuance Costs
Issuance costs
State
State and Local Jurisdiction [Member]
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent [Member]
Derivative liability
Derivative Liability
Derivative Liability, Total
Derivative liability related to extra milestone payment
Derivative liability offset to research and development expenses.
Derivative Liability Offset to Research and Development Expenses
Derivative liability offset to research and development expenses
Purchase price
Provisional purchase price
Provisional purchase price
Business Combination, Consideration Transferred
Preferred Stock, Value, Issued
Preferred Stock, Value, Issued, Ending Balance
Preferred Stock, Value, Issued, Beginning Balance
Preferred Stock, Value, Issued, Total
Preferred stock, par value $0.001 per share, 10,000,000 shares authorized; zero shares issued and outstanding
Cash Payment
Cash payment.
Cash Payment
Minimum
Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Weighted Average Grant Date Fair Value, Outstanding, Granted
Assets, Current [Abstract]
Current assets:
Simcere License Agreement
Simcere License Agreement [Member]
Simcere license agreement.
Shares Reserved for Future Issuance
Shares Reserved for Future Issuance [Member]
Shares reserved for future issuance.
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table]
Vesting of restricted common stock, net of tax withholdings (Shares)
Stock issued during period shares vesting of restricted common stock, net of tax withholdings.
Stock Issued During Period Shares Vesting of Restricted Common Stock, Net of Tax Withholdings
Replacement Warrants
Replacement Warrants [Member]
Replacement warrants.
Fair Value, Inputs, Level 3 [Member]
Level 3
Fair Value, Nonrecurring [Member]
Fair Value, Nonrecurring
Esbatech Agreement
ESBATech Agreement [Member]
Esbatech agreement.
Segment Reporting [Abstract]
Liabilities, Current [Abstract]
Current liabilities:
Weighted Average Grant Date Fair Value, Outstanding, Replacement RSU Awards
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Replacement in Period, Weighted Average Grant Date Fair Value
Share-based compensation arrangement by share-based payment award, equity instruments other than options, replacement in period, weighted average grant date fair value.
Interest on reserves for unrecognized tax benefits
Unrecognized Tax Benefits, Interest on Income Taxes Accrued
Related Party Transactions [Abstract]
Shares, Outstanding
Ending balance (in shares)
Beginning Balance, Shares
Sublease income
Sublease Income
Base rent payments to receive over sublease term
Operating loss carryforward
Operating Loss Carryforwards, Total
Commitments and Contingencies
Commitments and contingencies (Note 13)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Weighted Average Grant Date Fair Value, Outstanding, Beginning Balance
Weighted Average Grant Date Fair Value, Outstanding, Ending Balance
Pyxis Oncology
Pyxis Oncology [Member]
Pyxis oncology.
General and Administrative Expense [Member]
General and Administrative
Restricted cash
Restricted Cash, Current
Impairment Effects on Earnings Per Share [Table]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Net loss
Consolidated net loss
Weighted Average Number of Shares Outstanding, Basic, Total
Weighted Average Number of Shares Outstanding, Basic
Weighted average shares of common stock outstanding - basic
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value
Aggregate Intrinsic Value, Exercisable at March 31,2026
Potential development and commercial milestones
Potential Development and Commercial Milestone Payment
Potential development and commercial milestone payment.
Segment Reporting, Expense Information Used by CODM, Description
Proceeds from issuance of common stock under ESPP
Proceeds From Issuance Of Common Stock Under ESPP
Proceeds from issuance of common stock under ESPP.
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]
Maximum value of stock and debt instruments authorized to issue
Maximum Value of Stock and Debt Instruments Authorized to Issue
Maximum value of stock and debt instruments authorized to issue.
Gross proceeds from private placement
Proceeds from Issuance of Private Placement
LegoChem license agreement.
Lego Chem License Agreement [Member]
LegoChem License Agreement
Related Party Transactions Disclosure [Text Block]
Related Parties
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
Stock-based compensation
APIC, Share-based Payment Arrangement, Increase for Cost Recognition, Total
Increase in deferred tax assets valuation allowance
Equity, Attributable to Parent
Ending balance
Beginning balance
Total stockholders' equity
Preferred Stock, Par or Stated Value Per Share
Preferred stock, par or stated value per share
Basis of Accounting, Policy [Policy Text Block]
Basis of Presentation
Statement of Stockholders' Equity [Abstract]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Replacement Options
Replacement Options [Member]
Replacement Options.
Apexigen Replacement Warrants.
Apexigen Replacement Warrants [Member]
Apexigen Replacement Warrants
Use of Estimates, Policy [Policy Text Block]
Use of Estimates
Equity Method Investment [Table]
Schedule Of Equity Method Investments [Table]
Fair Value Disclosures [Text Block]
Fair Value Measurements
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]
Plan Name [Domain]
Plan Name
Other
Other [Member]
Other.
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Operating loss carryforwards expiration year
Operating loss carryforwards expiration year.
Business Description and Basis of Presentation [Text Block]
Description of Business
Warrants outstanding
Class of Warrant or Right, Outstanding
Number of shares are included in the computation of basic and diluted net loss per common share
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings
Issuance of restricted common stock, net of tax withholdings, (Shares)
Issuance of restricted common units, net of tax withholdings, (Shares)
Related and Nonrelated Parties [Axis]
Sublease agreement, square feet space area in building
Area of Real Estate Property
Entity Address, City or Town
Entity Address, City or Town
Issuance of common stock in private placement, net of offering costs
Issuance of common stock in private placement value, net of offering costs.
Issuance Of Common Stock In Private Placement Value, Net Of Offering Costs
Issuance of common stock in private placement, net of offering costs (See Note 7)
2022 Equity Incentive Plan
Apexigen Two Thousand and Twenty Two Equity Incentive Plan [Member]
Apexigen Two Thousand and Twenty Two Equity Incentive Plan.
Number of reportable segments
Number of Reportable Segments
Security Exchange Name
Security Exchange Name
Sale of Royalty Rights [Member].
Sale of Royalty Rights [Member]
Sale of Royalty Rights
Schedule of common stock reserved for future issuance.
Schedule Of Common Stock Reserved For Future Issuance [Table]
Schedule Of Common Stock Reserved For Future Issuance [Table]
Antidilutive Securities, Name [Domain]
Antidilutive Securities, Name
Reduction in exercise price of relevant option
Stock Option, Exercise Price, Decrease
Jitendra Wadhane [Member]
Jitendra wadhane.
Jitendra Wadhane
Total cash, cash equivalents and restricted cash shown in the statement of cash flows
Cash, cash equivalents and restricted cash at end of year
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
Cash, cash equivalents and restricted cash at beginning of period
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table]
Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table]
Statistical Measurement [Domain]
Statistical Measurement
Warrants exercise price per share
Class of Warrant or Right, Exercise Price of Warrants or Rights
Assets, Current
Total current assets
Share-Based Payment Arrangement, Expense
Stock-based compensation expense
Stock-based compensation expense
Stock options available for issuance.
Stock Options Available For Issuance [Member]
Stock Options Available for Issuance
Document Period End Date
Document Period End Date
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number
Number of Options, Exercisable at March 31, 2026
Two thousand nineteen equity incentive plan.
Two Thousand Nineteen Equity Incentive Plan [Member]
2019 Equity Incentive Plan
Statement of Financial Position [Abstract]
Restricted Stock Units (RSUs) [Member]
Restricted Stock Units ('RSU')
Restricted Stock Units Outstanding
Warrant Three
Warrant Three [Member]
Warrant three.
Antidilutive Security, Excluded EPS Calculation [Table]
Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table]
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation [Abstract]
Reconciliation of cash, cash equivalents and restricted cash:
Class of Stock [Axis]
Class of Stock
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Warrants and Rights Outstanding, Maturity Date
Warrants outstanding expire date
Pre-Funded warrants issued during period.
Pre-Funded Warrants Issued During Period
Pre-Funded Warrants issued to purchase aggregate number of shares of common stock
Liabilities
Total liabilities
Upfront payments.
Upfront Payments
Upfront payments
Number of Units, Vested and settled
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested and settled in period.
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Vested and Settled in Period
Number of Shares, Vested and settled
License agreements.
License Agreements [Abstract]
Restricted Cash
Restricted cash
Restricted Cash, Total
Non-vested and unsettled restricted stock units
Restricted Stock
Restricted Stock Awards
Warrant One
Warrant One [Member]
Warrant One.
Common Stock Reserved for Issuance
Schedule of common stock reserved for future issuance.
Schedule Of Common Stock Reserved For Future Issuance Table [Text Block]
Weighted Average Number of Shares Outstanding, Diluted, Total
Weighted Average Number of Shares Outstanding, Diluted
Weighted average shares of common stock outstanding - diluted
Entity File Number
Entity File Number
Upfront fee
Upfront Fee
Upfront fee.
Related Party Transaction Ownership
Related Party Transaction Ownership
Ownership percentage
Cover
Cover [Abstract]
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum
Expected volatility, minimum
Number of Units, Forfeited
Number of Shares, Cancelled
Number of shares of common stock outstanding percentage
Share-Based Compensation Arrangement by Share-Based Payment Award, Percentage of Outstanding Stock Maximum
Exercise of pre-funded warrants (Shares)
Exercise of pre-funded warrants
Exercise of pre-funded warrants
U S Treasury Securities
US Treasury Securities [Member]
Operating and Reporting Segment
Number of operating segment
Number of Operating Segments
Sale of Stock [Domain]
Sale of Stock
Segment Reporting Disclosure [Text Block]
Segment Disclosure
General and Administrative Expense
General and administrative
General and Administrative Expense, Total
Total general and administrative expenses
Incremental stock-based compensation expense
Incremental Stock-Based Compensation Expense
Incremental stock-based compensation expense.
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Research And Development Arrangement Contract To Perform For Others [Line Items]
Number of Options, Replacement Options
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period
Number of shares issued
Professional and Consultant Fees [Member]
Professional and consultant fees.
Professional and consultant fees
Non-cash lease expense
Operating Lease, Expense
Operating lease expense
Non-cash operating lease expense
Number of days common stock issued from effective date.
Number of Days Common Stock Issued From Effective Date
Number of days common stock issued from effective date
New Accounting Pronouncements, Policy [Policy Text Block]
Recently Issued Accounting Pronouncements
Risks and Uncertainties
Risks and Uncertainties [Policy Text Block]
Risks and Uncertainties [Policy Text Block]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Summary of Restricted Stock Awards and Restricted Stock Units
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
Liquidity and Going Concern Policy [Text Block]
Liquidity and going concern policy.
Liquidity and Going Concern
Contract with Customer, Liability, Current
Deferred revenues
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period
Stock options vesting period
Two thousand twenty one employee stock purchase plan.
Two Thousand Twenty One Employee Stock Purchase Plan [Member]
2021 Employee Stock Purchase Plan
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum
Risk-free interest rate, minimum
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount
Gross unrecognized stock-based compensation expense
Common Stock, Shares, Outstanding
Common Stock, Shares, Outstanding, Ending Balance
Common Stock, Shares, Outstanding, Beginning Balance
Common stock, shares outstanding
Operating lease liabilities, current portion
Current portion of Operating lease liabilities
Operating Lease, Liability, Current
Less: current portion of operating lease liabilities
Depreciation and amortization expense
Depreciation, Depletion and Amortization
Depreciation and amortization
Depreciation, Depletion and Amortization, Total
Document Transition Report
Document Transition Report
Operating Expenses
Total operating expenses
Research And Development
Research and Development Expense, Total
Research and development
Total research and development expenses
Lessee, Operating Leases [Text Block]
Operating Leases
Statement of Cash Flows [Abstract]
Stock-based compensation expense
Stock Issued During Period, Value, New Issues
Issuance of common stock
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Summary of Stock Option Activity
Stockholders' Equity
Equity [Text Block]
Earnings Per Share [Text Block]
Net Loss per Common Share
Shares, Issued
Issued Shares
Net loss
Net loss
Net loss
Aggregate Intrinsic Value, Outstanding
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value
Aggregate Intrinsic Value, Outstanding, Ending Balance
Aggregate Intrinsic Value, Outstanding, Beginning Balance
Operating lease cost
Operating Lease, Cost
Operating lease expense
Income Tax Contingency [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Expected dividend yield
Net Carrying Amount
Intangible assets, net
Intangible Assets, Net (Excluding Goodwill)
Sale of stock remaining capacity available under program.
Sale Of Stock Remaining Capacity Available Under Program
Remaining capacity available under program
Operating lease, payments
Operating Lease, Payments
Assets
Assets [Abstract]
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate
Risk-free interest rate
Prepaid expenses and other current assets
Increase (Decrease) in Prepaid Expense and Other Assets
Increase (Decrease) in Prepaid Expense and Other Assets, Total
Document Fiscal Year Focus
Document Fiscal Year Focus
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Period Increase (Decrease), Total
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Period Increase (Decrease)
Changes in the fair value of derivative liability
Investing activities
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Accounts Payable, Current
Accounts payable
Accounts Payable, Current, Total
Research and Development Expenses
Research and Development Expense [Member]
Research and Development
Unvested Restricted Stock Awards and Units
Unvested restricted stock awards.
Unvested Restricted Stock Awards [Member]
Transaction Type [Axis]
Transaction Type
Regulatory approval milestone payments.
Regulatory approval milestone payments
Regulatory Approval Milestone Payments
Warrant Two [Member]
Warrant Two
Warrant Two [Member]
Gross proceeds from issuance of initial public offering
Gross Proceeds from Issuance Initial Public Offering
Gross proceeds from issuance initial public offering.
Gross proceeds from issuance of initial public offering
Amount payable related to licensed products
Other Liabilities
Other Liabilities, Total
Proceeds from the exercise of stock options
Proceeds from Stock Options Exercised
Proceeds from stock options exercised
Fair Value Disclosures [Abstract]
Commitments and Contingencies Disclosure [Abstract]
Share-Based Payment Arrangement [Abstract]
Total
Assets, Fair Value Disclosure
Assets measured at fair value
Sale of Stock [Axis]
Sale of Stock
Issuance of common stock shares pursuant to at-the-market program, net of offering costs.
Issuance Of Common Stock Shares Pursuant To At-The-Market Program, Net Of Offering Costs
Issuance of common stock pursuant to at-the-market (ATM) program, net of offering costs (See Note 14) (Shares)
Stock issuance expenses
Stock Issuance Expenses
Stock issuance expenses.
Stock issuance expenses
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Net cash provided by investing activities
Private Placement Funding
Private Placement [Member]
Private Placement
Title of 12(b) Security
Title of 12(b) Security
Total interest and investment income
Investment Income, Net
Interest and investment income, net
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price
Weighted Average Exercise Price, Forfeited
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Weighted Average Grant Date Fair Value, Outstanding, Forfeited
Money Market Funds [Member]
Money market funds
Related and Nonrelated Parties [Domain]
Income Tax Disclosure [Text Block]
Income Taxes
Sale price per share
Warrant Redemption Condition Minimum Share Price
Warrant redemption condition minimum share price
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract]
Changes in operating assets and liabilities:
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Weighted Average Exercise Price, Beginning Balance
Weighted Average Exercise Price, Ending Balance
Income Tax Disclosure [Abstract]
Fair Value, Recurring and Nonrecurring [Table]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]
Additional Paid-in Capital
Additional Paid-in Capital [Member]
Underwriting discounts and commissions
Underwriting discounts and commissions
Underwriting discounts and commissions.
Underwriting discounts and commissions
Accrued expenses and other current liabilities
Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities
Measurement Frequency [Domain]
Measurement Frequency
Statement of Income Location, Balance [Axis]
Income Statement Location
Trading Symbol
Trading Symbol
Related Party Transaction [Table]
Schedule Of Related Party Transactions By Related Party [Table]
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum
Risk-free interest rate, maximum
Royalty obligation period for licensed products upon first commercial sale
Royalty Obligation Period For Licensed Products Upon First Commercial Sale
Royalty obligation period for licensed products upon first commercial sale.
Subsequent Event Type
Subsequent Event Type [Axis]
Financing activities
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Finance lease, term
Lessee, Finance Lease, Term of Contract
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term
Expected term (in years)
Fair Value, Recurring [Member]
Fair Value, Recurring
Entity Ex Transition Period
Entity Ex Transition Period
Schedule of Equity Method Investments [Line Items]
Schedule Of Equity Method Investments [Line Items]
Issuance of convertible preferred stock shares.
Issuance Of Convertible Preferred Stock Shares
Issuance of Series B convertible preferred stock, Shares
Issuance of convertible preferred stock shares
Two thousand twenty two equity inducement plan.
TwoThousandTwentyTwoEquityInducementPlan [Member]
2022 Equity Inducement Plan
Equity Components [Axis]
Equity Components
Royalty obligation period for licensed products upon after first commercial sale
Royalty Obligation Period For Licensed Products Upon After First Commercial Sale
Royalty obligation period for licensed products upon after first commercial sale.
Total other income, net
Nonoperating Income (Expense)
Other segment income
Equity Component [Domain]
Equity Component
Asset Class [Axis]
Business Combination [Axis]
IPO [Member]
Initial Public Offering
IPO
Issuance of common stock under employee stock purchase plan ("ESPP") (Shares)
Stock Issued During Period, Shares, Employee Stock Purchase Plans
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period
Award expiration period
Schedule of common stock reserved for future issuance.
Schedule Of Common Stock Reserved For Future Issuance [Line Items]
Schedule Of Common Stock Reserved For Future Issuance [Line Items]
Common Stock, Voting Rights
Common stock, authorized (in shares)
Common stock voting rights
Weighted Average Exercise Price, Replacement Options
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Replacement Options in Period, Weighted Average Exercise Price
Share-based compensation arrangements by share-based payment award, options, replacement options in period, weighted average exercise price.
Maximum [Member]
Maximum [Member]
Maximum
Liabilities, Fair Value Disclosure
Liabilities measured at fair value
Liabilities, Fair Value Disclosure, Total
Depreciation And Amortization [Member]
Depreciation And Amortization.
Depreciation and amortization
Statistical Measurement [Axis]
Statistical Measurement
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price
Weighted Average Exercise Price, Exercised
Prepaid Expense, Current
Prepaid expenses and other current assets
Prepaid Expense, Current, Total
Common stock issued, value
Common Stock, Value, Issued
Common Stock, Value, Issued, Ending Balance
Common Stock, Value, Issued, Beginning Balance
Common Stock, Value, Issued, Total
Common stock, $0.001 par value per share; 190,000,000 shares authorized; 62,831,246 and 62,690,229 shares issued and outstanding as of March 31, 2026 and December 31, 2025, respectively.
Aggregate maximum obligation to pay future contingent milestone payments for normal approval
Aggregate maximum obligation to pay future contingent milestone payments for normal approval.
Aggregate maximum obligation to pay future contingent milestone payments for normal approval
Interest and Investment Income
Schedule of Other Nonoperating Income, by Component [Table Text Block]
Income Tax Contingency [Table]
MaximumPercentageofOwnershipInterest
Maximum Percentage Of Ownership Interest
Maximum percentage of ownership interest
Aggregate milestone payments for first four licensed products
Aggregate Milestone Payments
Aggregate milestone payments.
Expected volatility
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate
Preferred stock, shares authorized
Preferred Stock, Shares Authorized
Payment, Tax Withholding, Share-Based Payment Arrangement
Tax withholding payments related to net settlement of restricted common stock
Maximum number of common shares issuable under exercise of options
Maximum Number of Common Shares Issuable Under Exercise of Options
Maximum number of common shares issuable under exercise of options.
Related Party Transaction [Line Items]
Related Party Transaction [Line Items]
Employee Stock [Member]
Employee Stock Purchase Plan
Stock Options Outstanding
Entity Registrant Name
Entity Registrant Name
Marketable debt securities, Unrealized Losses
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax
Fair value of common stock per share.
Fair Value Of Common Stock Per Share
Fair value of common stock per share
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Table]
Additional Paid in Capital
Additional Paid in Capital, Ending Balance
Additional Paid in Capital, Beginning Balance
Additional paid-in capital
Additional Paid in Capital, Total
Current income tax expenses (benefit)
Income Tax Expense (Benefit), Total
Measurement Frequency [Axis]
Measurement Frequency
Biosion License Agreement
Biosion license agreement.
Biosion License Agreement
Stock Options 2022 Plan, 2022 EIP, 2020 EIP, 2021 Plan and 2019 Plan
Stock Options Two Thousand Twenty Two Plan Two Thousand Twenty Two EIP Two Thousand Twenty EIP Two Thousand Twenty One Plan And Two Thousand Nineteen Plan [Member]
Stock options two thousand twenty two plan two thousand twenty two eip two thousand twenty eip two thousand twenty one plan and two thousand nineteen plan.
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Concentration of Credit Risks
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Accumulated Other Comprehensive Income (Loss), Net of Tax
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total
Accumulated other comprehensive income
Consolidation Items [Axis]
Right-of-use asset
Right-of-use Assets Non-current
Right-of-use assets non-current.
Federal Income Tax Expense (Benefit), Continuing Operations, Total
Federal Income Tax Expense (Benefit), Continuing Operations
Federal income tax provision
Option Upfront Payment
Option Upfront Payment
Stock option upfront payments
Payments to Acquire Property, Plant, and Equipment
Payments to Acquire Property, Plant, and Equipment, Total
Purchase of property and equipment
Commissions paid to the placement agent
Payments for Commissions
Number of Units, Granted
Number of restricted stock units granted
Assets
Total assets
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term
Weighted Average Remaining Contractual Term, Exercisable
Income Statement [Abstract]
Stock issued during period value vesting of restricted common stock, net of tax withholdings.
Stock Issued During Period Value Vesting of Restricted Common Stock, Net of Tax Withholdings
Vesting of restricted common stock, net of tax withholdings
Deferred Income Tax Expense (Benefit)
Deferred Income Tax Expense (Benefit), Total
Proceeds from issuance of common stock and pre-funded warrants in private placement.
Proceeds From Issuance Of Common Stock And Pre-funded Warrants In Private Placement
Proceeds from issuance of common stock and pre-funded warrants in private placement, net of offering costs
Stock Issued During Period, Shares, New Issues
Issuance of common stock (Shares)
Stock issued
Earnings Per Share, Diluted, Total
Earnings Per Share, Diluted
Net loss per common share - diluted
Operating Segments
Operating Segments [Member]
City Area Code
City Area Code
Other comprehensive income
Other Comprehensive Income (Loss), Net of Tax
Other comprehensive loss
Operating loss carryforwards before tax
Operating Loss Carryforwards Before Tax
Operating loss carryforwards before tax.
Shares issued pursuant to the ATM program, net of commission (shares)
Common stock issued under ATM offering program
Shares issued pursuant to at-the-market ("ATM") program, net of commission
Shares issued pursuant to at-the-market ("ATM") program, net of commission.
Financing lease liabilities, net of current portion
Finance Lease, Liability, Noncurrent
Operating loss carryforwards relating to prior tax years
Operating Loss Carryforwards Relating to Prior Tax Years
Operating loss carryforwards relating to prior tax years.
Issuance of common stock pursuant to at-the-market program value, net of offering costs.
Issuance of common stock pursuant to at-the-market program Value, net of offering costs
Issuance of common stock pursuant to at-the-market (ATM) program, net of offering costs (See Note 14)
Variable lease cost
Variable Lease, Cost
Share-based compensation arrangement by share-based payment award, equity instruments other than options vested and settled in period, weighted average grant date fair value.
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options Vested and Settled in Period, Weighted Average Grant Date Fair Value
Weighted Average Grant Date Fair Value, Outstanding, Vested and settled
Issuance of common stock under employee stock purchase plan ("ESPP")
Stock Issued During Period, Value, Employee Stock Purchase Plan
Milestone and royalties incurred.
Milestone and Royalties Incurred
Milestone and royalties occurred
Stock Issued During Period, Shares, Restricted Stock Award, Gross
Vesting of restricted common stock, net of tax withholdings (Shares)
Restricted common units issued, gross
Lease, Cost
Total lease cost
Sales agents commission rate
Sales Agents Commission Percentage
Sales agents commission percentage.
Nonoperating Income (Expense) [Member]
Other (Expense) Income
Acquisition date fair value of replacement awards
Fair value of consideration transferred
Business Combination, Consideration Transferred, Equity Interest
Total Property and equipment, net
Property, Plant and Equipment, Net
Property, Plant and Equipment, Net, Ending Balance
Property, Plant and Equipment, Net, Beginning Balance
Property and equipment, net
Payment for license fee
Payment for License Fee
Payment for license fee.
Cash, cash equivalents and restricted cash at end of period
Cash, cash equivalents and restricted cash at beginning of year
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total
Operating Income (Loss)
Loss from operations
Loss from operations
Annual installments
Annual Installments
Annual installments.
Accumulated Deficit
Retained Earnings [Member]
Transaction [Domain]
Transaction
Stock-based compensation
Share-Based Payment Arrangement, Noncash Expense
Share-based Payment Arrangement, Noncash Expense, Total
Number of shares authorized to be repurchased under a stock repurchase plan
Stock Repurchase Program Number of Shares Authorized to be Repurchased
Issuance of pre-funded warrants in private placement, net of offering costs.
Issuance Of Pre-Funded Warrants In Private Placement, Net Of Offering Costs
Issuance of pre-funded warrants in private placement, net of offering costs (See Note 8)
Issuance of pre-funded warrants in private placement, net of offering costs
Warrants redemption exercise price per share
Class Of Warrant Or Right Redemption Price Of Warrants Or Rights
Class of warrant or right redemption price of warrants or rights.
Extra milestone payment
Extra Milestone Payment
Extra milestone payment.
Operating lease liabilities, net of current portion
Operating Lease, Liability, Noncurrent
Operating lease liabilities, net of current portion
Fair Value, Inputs, Level 1 [Member]
Level 1
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash used in financing activities
Lease, Cost [Table Text Block]
Components of Lease Expense
Minimum annual royalty fees.
Minimum annual royalty fees
Minimum Annual Royalty Fees
Series B convertible preferred stocks.
Series B Convertible Preferred Stocks [Member]
Series B Convertible Preferred Stock
Series B
Other income, net:
Nonoperating Income (Expense) [Abstract]
Marketable Debt Securities
Summary of Marketable Securities Classified as Available-for-sale
Number of Options, Replacement Options
Share Based Compensation Arrangement By Share Based Payment Award Options Replacement In Period
Share based compensation arrangement by share based payment award options replacement in period.
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Anti-Dilutive Effect Excluded from Computation of Diluted Net Loss Per Share Attributable to Common Stockholders
Income Tax Jurisdiction [Domain]
Entity Interactive Data Current
Entity Interactive Data Current
Research and Development, Contract to Perform for Others [Table]
Schedule Of Research And Development Arrangement Contract To Perform For Others [Table]
Income Statement Location
Statement of Income Location, Balance [Domain]
Operating activities
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Accretion of discount on marketable debt securities
Accretion (Amortization) of Discounts and Premiums, Investments
Segment Reporting, Expense Information Used by CODM, Type [Extensible Enumeration]
Penalties on reserves for unrecognized tax benefits
Unrecognized Tax Benefits, Income Tax Penalties Accrued
Entity Tax Identification Number
Entity Tax Identification Number
Mabwell Agreement
Mabwell Agreement [member]
Mabwell agreement.
Aggregate maximum obligation to pay future contingent milestone payments for accelerated approval
Aggregate maximum obligation to pay future contingent milestone payments for accelerated approval.
Aggregate maximum obligation to pay future contingent milestone payments for accelerated approval
Condensed Income Statement [Table]
Marketable Security, Unrealized Gain (Loss)
Net unrealized (loss) gain on marketable debt securities
Net unrealized loss on marketable debt securities
Clinical Product Manufacturing [Member]
Clinical product manufacturing.
Clinical product manufacturing
Local Phone Number
Local Phone Number
Replacement RSUs
Replacement Restricted Stock Units [Member]
Replacement Restricted Stock Units.
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount
Gross unrecognized stock-based compensation expense
Stock Options 2022 Inducement Plan, 2022 Plan, 2020 Plan, 2021 Plan and 2019 Plan
Stock options Two Thousand Twent Two Inducement Plan Two Thousand Twenty Two Plan Two Thousand Twenty Plan Two Thousand Twenty One Plan And Two Thousand Nineteen Plan [Member]
Stock options Two Thousand Twent Two Inducement Plan Two Thousand Twenty Two Plan Two Thousand Twenty Plan Two Thousand Twenty One Plan And Two Thousand Nineteen Plan [Member]
Cash Acquired from Acquisition
Cash acquired in acquisition of Apexigen, Inc.
Trading days
Class of Warrant or Right Redemption of Warrants or Rights Threshold Trading Days
Class of warrant or right redemption of warrants or rights threshold trading days
Accounting Policies [Abstract]
General and Administrative Expense [Abstract]
General and administrative
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract]
Reconciliation of profit or loss
Class of Stock [Domain]
Class of Stock
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant
Number of shares available for future issuance
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Unrecognized stock-based compensation expense weighted average amortized period
Cash, cash equivalents and short-term investments
Cash, Cash Equivalents, and Short-Term Investments
Cash, Cash Equivalents, and Short-Term Investments, Total
Entity Emerging Growth Company
Entity Emerging Growth Company