$CSTL
CASTLE BIOSCIENCES INC Stock $cstl

$cstl Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-Q Financial Statement

#000144736219000015 Filed on November 12, 2019

Income Statement

Concept	2019 Q4	2019 Q3	2018 Q3
Revenue	$17.64M	$14.77M	$3.712M
YoY Change	54.21%	298.01%
Cost Of Revenue	$2.010M	$1.708M	$1.351M
YoY Change	46.72%	26.44%
Gross Profit	$15.62M	$13.07M	$2.361M
YoY Change	55.15%	453.41%
Gross Profit Margin	88.6%	88.44%	63.6%
Selling, General & Admin	$9.830M	$7.122M	$3.918M
YoY Change	140.93%	81.76%
% of Gross Profit	62.92%	54.51%	165.96%
Research & Development	$3.160M	$1.515M	$1.294M
YoY Change	177.19%	17.05%
% of Gross Profit	20.23%	11.59%	54.82%
Depreciation & Amortization	$100.0K	$91.00K	$74.52K
YoY Change	25.0%	22.12%
% of Gross Profit	0.64%	0.7%	3.16%
Operating Expenses	$13.01M	$8.637M	$5.213M
YoY Change	145.47%	65.69%
Operating Profit	$2.614M	$4.429M	-$2.852M
YoY Change	-45.2%	-255.31%
Interest Expense	-$490.0K	$1.088M	$568.8K
YoY Change	-24.62%	91.29%
% of Operating Profit	-18.75%	24.57%
Other Income/Expense, Net	$0.00	-$2.711M	-$42.80K
YoY Change	-100.0%	6234.7%
Pretax Income	$2.130M	$5.850M	-$3.450M
YoY Change	-45.1%	-269.57%
Income Tax	$70.00K	$0.00	$0.00
% Of Pretax Income	3.29%	0.0%
Net Earnings	$2.055M	$5.849M	-$3.450M
YoY Change	-46.87%	-269.54%
Net Earnings / Revenue	11.65%	39.59%	-92.94%
Basic Earnings Per Share	$0.12	$0.43	-$2.33
Diluted Earnings Per Share	$0.11	$0.05	-$2.33
COMMON SHARES
Basic Shares Outstanding	17.07M shares	12.76M shares	1.912M shares
Diluted Shares Outstanding		14.30M shares	1.912M shares

Balance Sheet

Concept	2019 Q4	2019 Q3	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$98.80M	$94.50M
YoY Change
Cash & Equivalents	$98.85M	$94.47M	$3.276M
Short-Term Investments
Other Short-Term Assets	$2.000M	$2.200M
YoY Change
Inventory	$1.237M	$821.7K
Prepaid Expenses
Receivables	$14.65M	$12.37M
Other Receivables	$0.00	$0.00
Total Short-Term Assets	$116.7M	$109.9M
YoY Change	543.72%
LONG-TERM ASSETS
Property, Plant & Equipment	$2.060M	$1.798M
YoY Change	34.73%
Goodwill
YoY Change
Intangibles	$0.00	$0.00
YoY Change	-100.0%
Long-Term Investments
YoY Change
Other Assets	$135.0K	$87.17K
YoY Change	-36.92%
Total Long-Term Assets	$3.065M	$3.337M
YoY Change	-28.37%
TOTAL ASSETS
Total Short-Term Assets	$116.7M	$109.9M
Total Long-Term Assets	$3.065M	$3.337M
Total Assets	$119.7M	$113.2M
YoY Change	434.46%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.865M	$1.251M
YoY Change	28.53%
Accrued Expenses	$7.500M	$4.600M
YoY Change
Deferred Revenue	$0.00
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due	$5.833M	$3.333M
YoY Change
Total Short-Term Liabilities	$15.29M	$9.238M
YoY Change	126.94%
LONG-TERM LIABILITIES
Long-Term Debt	$19.29M	$21.57M
YoY Change	-21.27%
Other Long-Term Liabilities	$100.0K	$100.0K
YoY Change
Total Long-Term Liabilities	$19.29M	$21.57M
YoY Change	-21.27%
TOTAL LIABILITIES
Total Short-Term Liabilities	$15.29M	$9.238M
Total Long-Term Liabilities	$19.29M	$21.57M
Total Liabilities	$34.63M	$30.86M
YoY Change	6.65%
SHAREHOLDERS EQUITY
Retained Earnings	-$52.21M	-$54.30M
YoY Change	-9.18%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$85.11M	$82.34M	-$60.45M
YoY Change
Total Liabilities & Shareholders Equity	$119.7M	$113.2M
YoY Change	434.46%

Cashflow Statement

Concept	2019 Q4	2019 Q3	2018 Q3
OPERATING ACTIVITIES
Net Income	$2.055M	$5.849M	-$3.450M
YoY Change	-46.87%	-269.54%
Depreciation, Depletion And Amortization	$100.0K	$91.00K	$74.52K
YoY Change	25.0%	22.12%
Cash From Operating Activities	$4.500M	$750.0K	-$1.870M
YoY Change	-240.19%	-140.11%
INVESTING ACTIVITIES
Capital Expenditures	-$350.0K	-$170.0K	-$90.00K
YoY Change	3400.0%	88.89%
Acquisitions
YoY Change
Other Investing Activities
YoY Change
Cash From Investing Activities	-$350.0K	-$170.0K	-$90.00K
YoY Change	3400.0%	88.89%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	230.0K	76.42M	40.00K
YoY Change	-94.8%	190950.0%
NET CHANGE
Cash From Operating Activities	4.500M	750.0K	-1.870M
Cash From Investing Activities	-350.0K	-170.0K	-90.00K
Cash From Financing Activities	230.0K	76.42M	40.00K
Net Change In Cash	4.380M	77.00M	-1.920M
YoY Change	265.0%	-4110.42%
FREE CASH FLOW
Cash From Operating Activities	$4.500M	$750.0K	-$1.870M
Capital Expenditures	-$350.0K	-$170.0K	-$90.00K
Free Cash Flow	$4.850M	$920.0K	-$1.780M
YoY Change	-251.56%	-151.69%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019Q3	cstl	Class Of Warrant Or Right Conversion Multiplier ClassOfWarrantOrRightConversionMultiplier	1.219
CY2018Q4	cstl	Class Of Warrant Or Right Exercised ClassOfWarrantOrRightExercised	219243	shares
CY2018Q4	cstl	Class Of Warrant Or Right Expired ClassOfWarrantOrRightExpired	11682	shares
	cstl	Contract With Customer Customer Payment Terms ContractWithCustomerCustomerPaymentTerms	P30D
	cstl	Conversion Of Preferred Stock Warrants Amount Issued ConversionOfPreferredStockWarrantsAmountIssued	0	USD
	cstl	Conversion Of Preferred Stock Warrants Amount Issued ConversionOfPreferredStockWarrantsAmountIssued	1744576	USD
CY2019Q3	cstl	Conversionof Convertible Preferred Stockto Common Stock Value ConversionofConvertiblePreferredStocktoCommonStockValue	46743493	USD
	cstl	Conversionof Convertible Preferred Stockto Common Stock Value ConversionofConvertiblePreferredStocktoCommonStockValue	46743493	USD
	cstl	Increase Decreasein Deferred Lease Liability IncreaseDecreaseinDeferredLeaseLiability	28022	USD
	cstl	Increase Decreasein Deferred Lease Liability IncreaseDecreaseinDeferredLeaseLiability	12419	USD
	cstl	Offering Costs And Debt Issuance Costs Incurred But Not Yet Paid OfferingCostsAndDebtIssuanceCostsIncurredButNotYetPaid	0	USD
	cstl	Offering Costs And Debt Issuance Costs Incurred But Not Yet Paid OfferingCostsAndDebtIssuanceCostsIncurredButNotYetPaid	4512	USD
	cstl	Other Non Cash Interest OtherNonCashInterest	0	USD
	cstl	Other Non Cash Interest OtherNonCashInterest	442176	USD
CY2019Q3	cstl	Proceedsfrom Issuance Initial Public Offering Gross ProceedsfromIssuanceInitialPublicOfferingGross	73600000	USD
CY2019Q3	cstl	Reclassificationsof Liabilityto Permanent Equity ReclassificationsofLiabilitytoPermanentEquity	1744576	USD
	cstl	Reclassificationsof Liabilityto Permanent Equity ReclassificationsofLiabilitytoPermanentEquity	1744576	USD
	cstl	Revenue From Contract With Customer Revenue Not Yet Recognized Number Of Claims In Adjudication Process RevenueFromContractWithCustomerRevenueNotYetRecognizedNumberOfClaimsInAdjudicationProcess	2698	claim
CY2019Q3	cstl	Temporary Equity Conversion Multiplier TemporaryEquityConversionMultiplier	1.219
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
	dei	Document Period End Date DocumentPeriodEndDate	2019-09-30
	dei	Document Type DocumentType	10-Q
	dei	Entity Central Index Key EntityCentralIndexKey	0001447362
CY2019Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	17074049	shares
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	true
	dei	Entity Ex Transition Period EntityExTransitionPeriod	false
	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Registrant Name EntityRegistrantName	CASTLE BIOSCIENCES INC
	dei	Entity Shell Company EntityShellCompany	false
	dei	Entity Small Business EntitySmallBusiness	true
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CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
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	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	655247	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-800598	USD
	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	1016014	USD
	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-894847	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	5671	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-60575	USD
CY2018Q3	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	935724	USD
CY2019Q3	us-gaap	Inventory Net InventoryNet	821658	USD
CY2018Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	13266	USD
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	us-gaap	Investment Income Interest InvestmentIncomeInterest	20889	USD
CY2019Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	5190	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2521740	USD
	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	83803	USD
	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	261737	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	31508	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	-3450032	USD
	us-gaap	Net Income Loss NetIncomeLoss	-10235446	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	49282	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	5849295	USD
	us-gaap	Net Income Loss NetIncomeLoss	3222233	USD
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	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	1521673	USD
CY2018Q3	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	66800	shares
CY2018Q4	us-gaap	Liabilities Liabilities	32474086	USD
CY2019Q3	us-gaap	Liabilities Liabilities	30864119	USD
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-4456077	USD
CY2018Q4	us-gaap	Interest Payable Current InterestPayableCurrent	185580	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-13024841	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	5542826	USD
CY2019Q3	us-gaap	Interest Payable Current InterestPayableCurrent	177283	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	882233	USD
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	290370	shares
	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	97853	shares
CY2018Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1186835	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	4167	USD
CY2019Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	0	USD
CY2018Q3	us-gaap	Interest Expense InterestExpense	568774	USD
	us-gaap	Interest Expense InterestExpense	1623842	USD
CY2019Q3	us-gaap	Interest Expense InterestExpense	1088130	USD
	us-gaap	Interest Expense InterestExpense	3805112	USD
	us-gaap	Interest Paid Net InterestPaidNet	1165636	USD
	us-gaap	Interest Paid Net InterestPaidNet	1680613	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	22404935	USD
CY2019Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	113200247	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	6737021	USD
CY2019Q3	us-gaap	Liabilities Current LiabilitiesCurrent	9237741	USD
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2019Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	3333333	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	24499752	USD
CY2019Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	21570372	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	11420210	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	88064230	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-271620	USD
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	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-9084380	USD
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-4456077	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-13024841	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	749645	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-3857457	USD
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	us-gaap	Operating Expenses OperatingExpenses	16022121	USD
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	us-gaap	Operating Expenses OperatingExpenses	24215585	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-2851728	USD
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CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	4429221	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	4715398	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	715244	USD
CY2019Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	976977	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	213735	USD
CY2019Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	87168	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	0	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-337	USD
CY2018Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-42796	USD
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CY2019Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2710417	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2932992	USD
CY2018Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	0	USD
CY2019Q3	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	1746	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	271620	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	589664	USD
CY2018Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2019Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2019Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	0	shares
CY2019Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2019Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2018Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2018Q4	us-gaap	Preferred Stock Value Outstanding PreferredStockValueOutstanding	0	USD
CY2019Q3	us-gaap	Preferred Stock Value Outstanding PreferredStockValueOutstanding	0	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	675562	USD
CY2019Q3	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	2197235	USD
	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	0	USD
	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	9235744	USD
CY2019Q3	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	65900000	USD
	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	0	USD
	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	65935428	USD
	us-gaap	Proceeds From Issuance Of Preferred Stock Preference Stock And Warrants ProceedsFromIssuanceOfPreferredStockPreferenceStockAndWarrants	10382514	USD
	us-gaap	Proceeds From Issuance Of Preferred Stock Preference Stock And Warrants ProceedsFromIssuanceOfPreferredStockPreferenceStockAndWarrants	49017	USD
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	1776145	USD
	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	1000000	USD
	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	11695495	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	37696	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1163546	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	2438381	USD
CY2019Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	2901234	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1528996	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1798236	USD
	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	0	USD
	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	1791145	USD
CY2018Q3	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	1294301	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	3716188	USD
CY2019Q3	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	1514966	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	4226054	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-57488578	USD
CY2019Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-54266345	USD
CY2019Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-54300000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3711759	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	11349705	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	14774891	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	34230447	USD
CY2018Q3	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	3918387	USD
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	12305933	USD
CY2019Q3	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	7121982	USD
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	19989531	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	220732	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	536713	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized	2075898	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	458726	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	1869241	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	497225	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	2.16
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	30342	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	3.10
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	695725	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	1.35
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	3.77
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	22832085	USD
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1659596	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1637472	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	1.99
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	4.15
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	1.70
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	6.82
CY2019Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	7919630	USD
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y10M5D
CY2019Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	140518	shares
CY2019Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	2.39
	us-gaap	Temporary Equity Accretion To Redemption Value Adjustment TemporaryEquityAccretionToRedemptionValueAdjustment	161863	USD
CY2019Q3	us-gaap	Temporary Equity Accretion To Redemption Value Adjustment TemporaryEquityAccretionToRedemptionValueAdjustment	17578	USD
	us-gaap	Temporary Equity Accretion To Redemption Value Adjustment TemporaryEquityAccretionToRedemptionValueAdjustment	130151	USD
CY2018Q3	us-gaap	Temporary Equity Dividends Adjustment TemporaryEquityDividendsAdjustment	949202	USD
	us-gaap	Temporary Equity Dividends Adjustment TemporaryEquityDividendsAdjustment	2627532	USD
CY2019Q3	us-gaap	Temporary Equity Dividends Adjustment TemporaryEquityDividendsAdjustment	288891	USD
	us-gaap	Temporary Equity Dividends Adjustment TemporaryEquityDividendsAdjustment	2156358	USD
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P8Y1M3D
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	687507	shares
CY2019Q3	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	26577696	USD
	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	26577696	USD
CY2019Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	65930916	USD
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	65930916	USD
CY2018Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	36631	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	37696	USD
CY2019Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	745996	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1163546	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	-50310505	USD
CY2018Q2	us-gaap	Stockholders Equity StockholdersEquity	-57053534	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	-60449386	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	-56565302	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	-50202566	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	82336128	USD
CY2019Q3	us-gaap	Stockholders Equity Note Stock Split Conversion Ratio1 StockholdersEquityNoteStockSplitConversionRatio1	0.8203
CY2018Q3	us-gaap	Temporary Equity Accretion To Redemption Value Adjustment TemporaryEquityAccretionToRedemptionValueAdjustment	56843	USD
CY2019Q3	us-gaap	Temporary Equity Shares Outstanding TemporaryEquitySharesOutstanding	9973884	shares
CY2018Q4	us-gaap	Warrants And Rights Outstanding WarrantsAndRightsOutstanding	1193726	USD
CY2019Q3	us-gaap	Warrants And Rights Outstanding WarrantsAndRightsOutstanding	0	USD
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	1912429	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	1902314	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	14301663	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	5746610	shares
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1912429	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1902314	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	12757658	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	5648757	shares
	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:8px;padding-top:8px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;color:#231f20;">A majority of the Company’s cash and cash equivalents are deposited with a single financial institution. </font></div></div>
	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:8px;padding-top:8px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;color:#231f20;">The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Significant items subject to such estimates include revenue recognition, the determination of fair value of the Company’s preferred stock warrants and convertible debt embedded derivatives, the valuation of stock options, assessing future tax exposure and the realization of deferred tax assets, the useful lives and recoverability of property and equipment, and contingent liabilities. The Company bases these estimates on historical and anticipated results, trends, and various other assumptions that the Company believes are reasonable under the circumstances, including assumptions as to future events. These estimates form the basis for making judgments about the carrying values of assets and liabilities and recorded revenues and expenses that are not readily apparent from other sources. Actual results could differ from those estimates and assumptions.</font></div></div>

Files In Submission

Name	View Source	Status
0001447362-19-000015-index-headers.html	Edgar Link	pending
0001447362-19-000015-index.html	Edgar Link	pending
0001447362-19-000015.txt	Edgar Link	pending
0001447362-19-000015-xbrl.zip	Edgar Link	pending
a930201910-q.htm	Edgar Link	pending
cstl-20190930.xml	Edgar Link	completed
cstl-20190930.xsd	Edgar Link	pending
cstl-20190930_cal.xml	Edgar Link	unprocessable
cstl-20190930_def.xml	Edgar Link	unprocessable
cstl-20190930_lab.xml	Edgar Link	unprocessable
cstl-20190930_pre.xml	Edgar Link	unprocessable
exhibit311q32019.htm	Edgar Link	pending
exhibit312q32019.htm	Edgar Link	pending
exhibit321q32019.htm	Edgar Link	pending
exhibit322q32019.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
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$CSTL
CASTLE BIOSCIENCES INC Stock $cstl

2019 Q4 Form 10-Q Financial Statement

#000144736219000015 Filed on November 12, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CSTL CASTLE BIOSCIENCES INC Stock $cstl

2019 Q4 Form 10-Q Financial Statement

#000144736219000015 Filed on November 12, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CSTL
CASTLE BIOSCIENCES INC Stock $cstl