$KRON
Kronos Bio, Inc. Stock $kron

$kron Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000174183021000018 Filed on March 23, 2021

Income Statement

Concept	2020 Q4	2019 Q4	2018
Revenue	$0.00	$0.00	$0.00
YoY Change
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin	$9.390M	$1.110M	$1.610M
YoY Change	745.95%
% of Gross Profit
Research & Development	$11.70M	$4.750M	$5.033M
YoY Change	146.32%
% of Gross Profit
Depreciation & Amortization	$800.0K	$400.0K	$100.0K
YoY Change	100.0%
% of Gross Profit
Operating Expenses	$21.09M	$5.860M	$6.645M
YoY Change	259.9%
Operating Profit			-$6.645M
YoY Change
Interest Expense	-$12.07M	$390.0K	$76.00K
YoY Change	-3194.87%
% of Operating Profit
Other Income/Expense, Net			-$76.00K
YoY Change
Pretax Income	-$33.16M	-$5.470M	-$6.720M
YoY Change	506.22%
Income Tax			$0.00
% Of Pretax Income
Net Earnings	-$88.44M	-$16.12M	-$6.721M
YoY Change	448.76%
Net Earnings / Revenue
Basic Earnings Per Share
Diluted Earnings Per Share	-$1.293M	-$411.3K	-$510.6K
COMMON SHARES
Basic Shares Outstanding	56.03M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2020 Q4	2019 Q4	2018
SHORT-TERM ASSETS
Cash & Short-Term Investments	$413.1M		$10.20M
YoY Change
Cash & Equivalents	$248.0M	$32.57M	$10.20M
Short-Term Investments	$165.1M		$0.00
Other Short-Term Assets	$6.100M		$300.0K
YoY Change
Inventory
Prepaid Expenses
Receivables	$600.0K		$0.00
Other Receivables	$0.00		$0.00
Total Short-Term Assets	$419.8M	$93.30M	$10.50M
YoY Change	349.93%
LONG-TERM ASSETS
Property, Plant & Equipment	$41.00M		$1.800M
YoY Change
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$49.00M		$0.00
YoY Change
Other Assets	$166.0K	$427.0K	$300.0K
YoY Change	-61.12%
Total Long-Term Assets	$92.16M	$9.383M	$2.100M
YoY Change	882.22%
TOTAL ASSETS
Total Short-Term Assets	$419.8M	$93.30M	$10.50M
Total Long-Term Assets	$92.16M	$9.383M	$2.100M
Total Assets	$512.0M	$102.7M	$12.60M
YoY Change	398.57%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$4.550M	$1.506M	$800.0K
YoY Change	202.12%
Accrued Expenses	$4.974M	$818.0K	$400.0K
YoY Change	508.07%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00		$0.00
YoY Change
Long-Term Debt Due	$0.00		$0.00
YoY Change
Total Short-Term Liabilities	$12.86M	$2.697M	$1.300M
YoY Change	376.68%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00		$0.00
YoY Change
Other Long-Term Liabilities	$2.469M	$74.00K	$600.0K
YoY Change	3236.49%
Total Long-Term Liabilities	$2.469M	$74.00K	$600.0K
YoY Change	3236.49%
TOTAL LIABILITIES
Total Short-Term Liabilities	$12.86M	$2.697M	$1.300M
Total Long-Term Liabilities	$2.469M	$74.00K	$600.0K
Total Liabilities	$46.45M	$2.982M	$1.900M
YoY Change	1457.51%
SHAREHOLDERS EQUITY
Retained Earnings	-$111.9M	-$23.46M
YoY Change	376.97%
Common Stock	$54.00K	$6.000K
YoY Change	800.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$465.5M	-$23.20M	$10.70M
YoY Change
Total Liabilities & Shareholders Equity	$512.0M	$102.7M	$12.60M
YoY Change	398.57%

Cashflow Statement

Concept	2020 Q4	2019 Q4	2018
OPERATING ACTIVITIES
Net Income	-$88.44M	-$16.12M	-$6.721M
YoY Change	448.76%
Depreciation, Depletion And Amortization	$800.0K	$400.0K	$100.0K
YoY Change	100.0%
Cash From Operating Activities	-$15.63M	-$4.940M	-$6.441M
YoY Change	216.4%
INVESTING ACTIVITIES
Capital Expenditures	-$3.680M	-$640.0K	$1.075M
YoY Change	475.0%
Acquisitions
YoY Change
Other Investing Activities	-$155.1M	-$64.63M	$0.00
YoY Change	139.95%
Cash From Investing Activities	-$158.8M	-$65.27M	-$1.075M
YoY Change	143.24%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$5.000K
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	266.2M	50.00K	$16.22M
YoY Change	532300.0%
NET CHANGE
Cash From Operating Activities	-15.63M	-4.940M	-$6.441M
Cash From Investing Activities	-158.8M	-65.27M	-$1.075M
Cash From Financing Activities	266.2M	50.00K	$16.22M
Net Change In Cash	91.81M	-70.16M	$8.702M
YoY Change	-230.86%
FREE CASH FLOW
Cash From Operating Activities	-$15.63M	-$4.940M	-$6.441M
Capital Expenditures	-$3.680M	-$640.0K	$1.075M
Free Cash Flow	-$11.95M	-$4.300M	-$7.516M
YoY Change	177.91%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0001741830
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	001-39592
CY2020	dei	Entity Registrant Name EntityRegistrantName	Kronos Bio, Inc.
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	82-1895605
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	1300 So. El Camino Real
CY2020	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 300
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	San Mateo
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	94402
CY2020	dei	City Area Code CityAreaCode	650
CY2020	dei	Local Phone Number LocalPhoneNumber	781-5200
CY2020	dei	Security12b Title Security12bTitle	Common stock, $0.001 par value per share
CY2020	dei	Trading Symbol TradingSymbol	KRON
CY2020	dei	Security Exchange Name SecurityExchangeName	NASDAQ
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CY2018	us-gaap	Research And Development In Process ResearchAndDevelopmentInProcess	0	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	3753000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	113000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	30000	USD
CY2020	kron	Lease Expense Noncash LeaseExpenseNoncash	4027000	USD
CY2019	kron	Lease Expense Noncash LeaseExpenseNoncash	249000	USD
CY2018	kron	Lease Expense Noncash LeaseExpenseNoncash	69000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	5226000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	607000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-5000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-261000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	153000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	247000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	2807000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	716000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-28000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	3229000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	620000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	193000	USD
CY2020	kron	Increase Decrease In Right Of Use Operating Assets And Liabilities Net IncreaseDecreaseInRightOfUseOperatingAssetsAndLiabilitiesNet	-685000	USD
CY2019	kron	Increase Decrease In Right Of Use Operating Assets And Liabilities Net IncreaseDecreaseInRightOfUseOperatingAssetsAndLiabilitiesNet	252000	USD
CY2018	kron	Increase Decrease In Right Of Use Operating Assets And Liabilities Net IncreaseDecreaseInRightOfUseOperatingAssetsAndLiabilitiesNet	43000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	4704000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-48000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	210000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-37912000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-15082000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-6441000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	9568000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2948000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1075000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	229328000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	64633000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	0	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	78661000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	0	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	0	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-160235000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-67581000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1075000	USD
CY2020	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	263725000	USD
CY2019	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	0	USD
CY2018	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	0	USD
CY2020	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	151275000	USD
CY2019	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2018	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	32000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	30000	USD
CY2018	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	72000	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	645000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	115000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	5000	USD
CY2020	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	104922000	USD
CY2018	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	16285000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	415613000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	105007000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	16218000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	217466000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	22344000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	8702000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	32570000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	10226000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1524000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	250036000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	32570000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	10226000	USD
CY2020	kron	Stock Issued Convertible Preferred StockIssuedConvertiblePreferred	122907000	USD
CY2019	kron	Stock Issued Convertible Preferred StockIssuedConvertiblePreferred	0	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1280000	USD
CY2018	kron	Stock Issued Convertible Preferred StockIssuedConvertiblePreferred	0	USD
	us-gaap	Net Income Loss NetIncomeLoss	-111900000	USD
CY2020	kron	Stock Issued Convertible Notes Payable StockIssuedConvertibleNotesPayable	186137000	USD
CY2019	kron	Stock Issued Convertible Notes Payable StockIssuedConvertibleNotesPayable	0	USD
CY2018	kron	Stock Issued Convertible Notes Payable StockIssuedConvertibleNotesPayable	0	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	116000	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	104000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	28839000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	4000	USD
CY2018	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	810000	USD
CY2020	kron	Property And Equipment Obtained In Exchange For Finance Lease PropertyAndEquipmentObtainedInExchangeForFinanceLease	0	USD
CY2019	kron	Property And Equipment Obtained In Exchange For Finance Lease PropertyAndEquipmentObtainedInExchangeForFinanceLease	0	USD
CY2018	kron	Property And Equipment Obtained In Exchange For Finance Lease PropertyAndEquipmentObtainedInExchangeForFinanceLease	139000	USD
CY2020	kron	Temporary Equity Issuance Upon Conversion Of Convertible Notes TemporaryEquityIssuanceUponConversionOfConvertibleNotes	0	USD
CY2019	kron	Temporary Equity Issuance Upon Conversion Of Convertible Notes TemporaryEquityIssuanceUponConversionOfConvertibleNotes	0	USD
CY2018	kron	Temporary Equity Issuance Upon Conversion Of Convertible Notes TemporaryEquityIssuanceUponConversionOfConvertibleNotes	1700000	USD
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	segment
CY2020Q4	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	462100000	USD
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:9pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-bottom:9pt;text-indent:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of assets and liabilities at the date of the financial statements and the reported amounts of expenses during the reporting periods. Significant estimates and assumptions reflected in these financial statements include, but are not limited to, the accrual of research and development expenses, the fair value of investments, income tax uncertainties, the valuation of equity instruments and the incremental borrowing rate for determining the operating lease assets and liabilities. Estimates are periodically reviewed in light of changes in circumstances, facts and experience. Actual results could differ from the Company’s estimates.</span></div>
CY2020Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	2000000.0	USD
CY2020	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-bottom:9pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Concentration of Credit Risk and Other Risks and Uncertainties</span></div><div style="margin-bottom:9pt;text-indent:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Financial instruments, which potentially subject the Company to significant concentrations of credit risk, consist primarily of cash and cash equivalents and investments. The primary objectives for the Company’s investment portfolio are the preservation of capital and the maintenance of liquidity. The Company does not enter into any investment transaction for trading or speculative purposes.</span></div><div style="margin-bottom:9pt;text-indent:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company’s investment policy limits investments to certain types of instruments such as certificates of deposit, money market instruments, obligations issued by the U.S. government and U.S. government agencies as well as corporate debt securities, and places restrictions on maturities and concentration by type and issuer. The Company maintains cash balances in excess of amounts insured by the FDIC and concentrated within a limited number of financial institutions. The accounts are monitored by management and management believes that the financial institutions are financially sound, and, accordingly, minimal credit risk exists with respect to these financial institutions. As of December 31, 2020 and 2019, the Company has not experienced any credit losses in such accounts or investments.</span></div><div style="margin-bottom:9pt;text-indent:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company is subject to a number of risks common for biopharmaceutical companies, including, but not limited to, dependency on the clinical and commercial success of its product candidates, ability to obtain regulatory approval of its product candidates, the need for substantial additional financing to achieve its goals, uncertainty of broad adoption of its approved products, if any, by physicians and patients, significant competition, and untested manufacturing capabilities.</span></div>
CY2019Q4	us-gaap	Deferred Offering Costs DeferredOfferingCosts	0	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	248009000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	32570000	USD
CY2020Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	2027000	USD
CY2019Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	0	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	250036000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	32570000	USD
CY2020Q4	kron	Cash And Cash Equivalent And Debt Securities Available For Sale Amortized Cost CashAndCashEquivalentAndDebtSecuritiesAvailableForSaleAmortizedCost	450890000	USD
CY2020Q4	kron	Cash And Cash Equivalent And Debt Securities Available For Sale Gross Unrealized Gain Before Tax CashAndCashEquivalentAndDebtSecuritiesAvailableForSaleGrossUnrealizedGainBeforeTax	18000	USD
CY2020Q4	kron	Cash And Cash Equivalent And Debt Securities Available For Sale Gross Unrealized Loss Before Tax CashAndCashEquivalentAndDebtSecuritiesAvailableForSaleGrossUnrealizedLossBeforeTax	37000	USD
CY2020Q4	kron	Cash And Cash Equivalent And Debt Securities Available For Sale CashAndCashEquivalentAndDebtSecuritiesAvailableForSale	450871000	USD
CY2019Q4	kron	Cash And Cash Equivalent And Debt Securities Available For Sale Amortized Cost CashAndCashEquivalentAndDebtSecuritiesAvailableForSaleAmortizedCost	71145000	USD
CY2019Q4	kron	Cash And Cash Equivalent And Debt Securities Available For Sale Gross Unrealized Gain Before Tax CashAndCashEquivalentAndDebtSecuritiesAvailableForSaleGrossUnrealizedGainBeforeTax	2000	USD
CY2019Q4	kron	Cash And Cash Equivalent And Debt Securities Available For Sale Gross Unrealized Loss Before Tax CashAndCashEquivalentAndDebtSecuritiesAvailableForSaleGrossUnrealizedLossBeforeTax	20000	USD
CY2019Q4	kron	Cash And Cash Equivalent And Debt Securities Available For Sale CashAndCashEquivalentAndDebtSecuritiesAvailableForSale	71127000	USD
CY2020Q4	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	236818000	USD
CY2019Q4	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	6751000	USD
CY2020Q4	us-gaap	Short Term Investments ShortTermInvestments	165052000	USD
CY2019Q4	us-gaap	Short Term Investments ShortTermInvestments	59614000	USD
CY2020Q4	us-gaap	Long Term Investments LongTermInvestments	49001000	USD
CY2019Q4	us-gaap	Long Term Investments LongTermInvestments	4762000	USD
CY2020Q4	us-gaap	Investments And Cash InvestmentsAndCash	450871000	USD
CY2019Q4	us-gaap	Investments And Cash InvestmentsAndCash	71127000	USD
CY2020Q4	us-gaap	Investments And Cash InvestmentsAndCash	450871000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	287686000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	66253000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	49001000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	4762000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	114184000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	112000	USD
CY2019Q4	us-gaap	Investments And Cash InvestmentsAndCash	71127000	USD
CY2019	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSale	0	USD
CY2020	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSale	0	USD
CY2020Q4	kron	Debt Securities Available For Sale Accrued Interest DebtSecuritiesAvailableForSaleAccruedInterest	612000	USD
CY2019Q4	kron	Debt Securities Available For Sale Accrued Interest DebtSecuritiesAvailableForSaleAccruedInterest	198000	USD
CY2020Q4	kron	Prepaid Equipment Service Contracts PrepaidEquipmentServiceContracts	383000	USD
CY2019Q4	kron	Prepaid Equipment Service Contracts PrepaidEquipmentServiceContracts	191000	USD
CY2020Q4	kron	Prepaid External Research And Development And Outside Services PrepaidExternalResearchAndDevelopmentAndOutsideServices	1889000	USD
CY2019Q4	kron	Prepaid External Research And Development And Outside Services PrepaidExternalResearchAndDevelopmentAndOutsideServices	113000	USD
CY2020Q4	kron	Prepaid Software PrepaidSoftware	736000	USD
CY2019Q4	kron	Prepaid Software PrepaidSoftware	180000	USD
CY2020Q4	us-gaap	Prepaid Insurance PrepaidInsurance	2881000	USD
CY2019Q4	us-gaap	Prepaid Insurance PrepaidInsurance	23000	USD
CY2020Q4	us-gaap	Prepaid Rent PrepaidRent	240000	USD
CY2019Q4	us-gaap	Prepaid Rent PrepaidRent	414000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	6741000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	1119000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	139000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	139000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	14931000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	4167000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	1285000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	446000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	13646000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	3721000	USD
CY2020Q4	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	800000	USD
CY2019Q4	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	400000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	100000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	2274000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	528000	USD
CY2020Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	558000	USD
CY2019Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	43000	USD
CY2020Q4	kron	Accrued External Research And Development Current AccruedExternalResearchAndDevelopmentCurrent	1017000	USD
CY2019Q4	kron	Accrued External Research And Development Current AccruedExternalResearchAndDevelopmentCurrent	241000	USD
CY2020Q4	kron	Accrued Leasehold Improvements Current AccruedLeaseholdImprovementsCurrent	927000	USD
CY2019Q4	kron	Accrued Leasehold Improvements Current AccruedLeaseholdImprovementsCurrent	0	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	198000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	6000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	4974000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	818000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	5000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	32000	USD
CY2020Q4	us-gaap	Deferred Compensation Share Based Arrangements Liability Current DeferredCompensationShareBasedArrangementsLiabilityCurrent	2174000	USD
CY2019Q4	us-gaap	Deferred Compensation Share Based Arrangements Liability Current DeferredCompensationShareBasedArrangementsLiabilityCurrent	56000	USD
CY2020Q4	kron	Espp Withholdings Liability Current ESPPWithholdingsLiabilityCurrent	216000	USD
CY2019Q4	kron	Espp Withholdings Liability Current ESPPWithholdingsLiabilityCurrent	0	USD
CY2020Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	2395000	USD
CY2019Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	88000	USD
CY2019Q4	us-gaap	Temporary Equity Shares Authorized TemporaryEquitySharesAuthorized	21506977	shares
CY2019Q4	us-gaap	Temporary Equity Shares Outstanding TemporaryEquitySharesOutstanding	21504893	shares
CY2019Q4	us-gaap	Temporary Equity Shares Issued TemporaryEquitySharesIssued	21504893	shares
CY2019Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Parent TemporaryEquityCarryingAmountAttributableToParent	122907000	USD
CY2019Q4	us-gaap	Temporary Equity Liquidation Preference TemporaryEquityLiquidationPreference	123016000	USD
CY2019Q4	us-gaap	Convertible Preferred Stock Shares Issued Upon Conversion ConvertiblePreferredStockSharesIssuedUponConversion	22687625	shares
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2020Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2019Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	54073901	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	54073901	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	5660391	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	5660391	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	7.25
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	1.42
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0.16
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue	1.01
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue	0.14
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue	0.03
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CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P8Y9M3D
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CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	9.28
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P9Y3M18D
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	123904000	USD
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CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
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CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-2748000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-232000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-90000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	475000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	427000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	165000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	15062000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	3958000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	1694000	USD
CY2020	kron	Effective Income Tax Rate Reconciliation Change In Fair Value Of Convertible Notes EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNotes	5756000	USD
CY2019	kron	Effective Income Tax Rate Reconciliation Change In Fair Value Of Convertible Notes EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNotes	0	USD
CY2018	kron	Effective Income Tax Rate Reconciliation Change In Fair Value Of Convertible Notes EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNotes	0	USD
CY2020	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	978000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	85000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-72000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2020Q4	kron	Effective Income Tax Rate Reconciliation Lease Liabilities EffectiveIncomeTaxRateReconciliationLeaseLiabilities	8312000	USD
CY2019Q4	kron	Effective Income Tax Rate Reconciliation Lease Liabilities EffectiveIncomeTaxRateReconciliationLeaseLiabilities	119000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	4000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	495000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	127000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	19710000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	5276000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	673000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	496000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	1000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	1000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	29191000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	6023000	USD
CY2020Q4	kron	Deferred Tax Liabilities Right Of Use Assets DeferredTaxLiabilitiesRightOfUseAssets	7085000	USD
CY2019Q4	kron	Deferred Tax Liabilities Right Of Use Assets DeferredTaxLiabilitiesRightOfUseAssets	114000	USD
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CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	20797000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	173000	USD
CY2020Q4	kron	Deferred Tax Liabilities Stock Based Compensation DeferredTaxLiabilitiesStockBasedCompensation	898000	USD
CY2019Q4	kron	Deferred Tax Liabilities Stock Based Compensation DeferredTaxLiabilitiesStockBasedCompensation	0	USD
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CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	8394000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	287000	USD
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CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	5736000	USD
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CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	5700000	USD
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CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	32000	USD
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CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	141000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	109000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	32000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
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CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	5000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	37000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	27322000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	473000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	937000	USD
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CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	31120000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	211000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	32057000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	496000	USD
CY2020Q4	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1000	USD
CY2019Q4	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	3000	USD
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CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	21000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	23000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	21000	USD
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CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	310000	USD
CY2018	us-gaap	Operating Lease Cost OperatingLeaseCost	128000	USD
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CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	300000	USD
CY2018	us-gaap	Operating Lease Payments OperatingLeasePayments	200000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	4764000	USD
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CY2020Q4	kron	Lessee Operating Lease Liability To Be Paid Year Five And Thereafter LesseeOperatingLeaseLiabilityToBePaidYearFiveAndThereafter	30834000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	50401000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	17568000	USD
CY2020Q4	us-gaap	Tenant Improvements TenantImprovements	776000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	32057000	USD

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Kronos Bio, Inc. Stock $kron

2020 Q4 Form 10-K Financial Statement

#000174183021000018 Filed on March 23, 2021

Income Statement

Balance Sheet

Cashflow Statement

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$KRON Kronos Bio, Inc. Stock $kron

2020 Q4 Form 10-K Financial Statement

#000174183021000018 Filed on March 23, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$KRON
Kronos Bio, Inc. Stock $kron