2024 Q1 Form 10-K Financial Statement

#000095017024021074 Filed on February 27, 2024

View on sec.gov

Income Statement

Concept 2024 Q1 2023 Q4 2023
Revenue $0.00 $871.0K $2.805M
YoY Change -100.0% 27.15% -55.77%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin $10.06M $9.864M $41.67M
YoY Change -12.66% -2.63% -0.06%
% of Gross Profit
Research & Development $19.77M $19.00M $71.80M
YoY Change 18.29% 2.33% -6.49%
% of Gross Profit
Depreciation & Amortization $500.0K $508.0K $2.200M
YoY Change -16.67% -14.04% -8.33%
% of Gross Profit
Operating Expenses $29.83M $28.86M $113.5M
YoY Change 5.66% 0.58% -4.57%
Operating Profit -$29.83M -$110.7M
YoY Change 6.78% -1.69%
Interest Expense $2.964M $13.33M
YoY Change -6.23% 395.5%
% of Operating Profit
Other Income/Expense, Net $2.964M $3.236M $13.33M
YoY Change -6.23% 76.06% 395.5%
Pretax Income -$26.87M -$24.76M -$97.34M
YoY Change 8.44% -5.28% -11.41%
Income Tax
% Of Pretax Income
Net Earnings -$26.87M -$24.76M -$97.34M
YoY Change 8.44% -5.28% -11.41%
Net Earnings / Revenue -2842.25% -3470.05%
Basic Earnings Per Share -$0.43 -$1.59
Diluted Earnings Per Share -$0.43 -$0.40 -$1.59
COMMON SHARES
Basic Shares Outstanding 61.94M 61.82M 61.31K
Diluted Shares Outstanding 61.98K 61.31K

Balance Sheet

Concept 2024 Q1 2023 Q4 2023
SHORT-TERM ASSETS
Cash & Short-Term Investments $213.3M $236.2M $236.2M
YoY Change -28.38% 16.41% 16.41%
Cash & Equivalents $39.95M $25.56M $25.56M
Short-Term Investments $173.4M $210.7M $210.7M
Other Short-Term Assets $3.554M $3.729M $3.729M
YoY Change -4.62% 6.03% 6.03%
Inventory
Prepaid Expenses
Receivables $1.084M $2.249M $2.249M
Other Receivables $0.00 $0.00 $0.00
Total Short-Term Assets $218.0M $242.2M $242.2M
YoY Change -28.03% 16.71% 16.71%
LONG-TERM ASSETS
Property, Plant & Equipment $4.765M $5.216M $12.39M
YoY Change -27.4% -24.47% -22.4%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets $1.988M $2.011M $3.103M
YoY Change -2.12% -4.47% -2.94%
Total Long-Term Assets $14.64M $15.50M $15.50M
YoY Change -19.98% -19.15% -19.15%
TOTAL ASSETS
Total Short-Term Assets $218.0M $242.2M $242.2M
Total Long-Term Assets $14.64M $15.50M $15.50M
Total Assets $232.6M $257.7M $257.7M
YoY Change -27.57% 13.68% 13.68%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable $3.857M $2.757M $2.757M
YoY Change 2.09% -24.22% -24.22%
Accrued Expenses $6.452M $10.52M $10.52M
YoY Change -34.72% -12.67% -12.67%
Deferred Revenue
YoY Change
Short-Term Debt $0.00 $0.00 $0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities $10.69M $13.68M $13.68M
YoY Change -25.77% -18.24% -18.24%
LONG-TERM LIABILITIES
Long-Term Debt $0.00 $0.00 $0.00
YoY Change
Other Long-Term Liabilities $197.0K $197.0K $8.826M
YoY Change -38.44% 0.0% -19.89%
Total Long-Term Liabilities $197.0K $197.0K $8.826M
YoY Change -38.44% 0.0% -19.89%
TOTAL LIABILITIES
Total Short-Term Liabilities $10.69M $13.68M $13.68M
Total Long-Term Liabilities $197.0K $197.0K $8.826M
Total Liabilities $19.00M $22.50M $22.50M
YoY Change -23.6% -18.89% -18.89%
SHAREHOLDERS EQUITY
Retained Earnings -$536.5M -$509.7M
YoY Change 22.74% 23.62%
Common Stock $750.6M $745.0M
YoY Change 2.25% 21.72%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity $213.6M $235.2M $235.2M
YoY Change
Total Liabilities & Shareholders Equity $232.6M $257.7M $257.7M
YoY Change -27.57% 13.68% 13.68%

Cashflow Statement

Concept 2024 Q1 2023 Q4 2023
OPERATING ACTIVITIES
Net Income -$26.87M -$24.76M -$97.34M
YoY Change 8.44% -5.28% -11.41%
Depreciation, Depletion And Amortization $500.0K $508.0K $2.200M
YoY Change -16.67% -14.04% -8.33%
Cash From Operating Activities -$25.28M -$23.16M -$90.97M
YoY Change 4.84% 17.58% -6.27%
INVESTING ACTIVITIES
Capital Expenditures $28.00K $77.00K $508.0K
YoY Change -83.63% -33.62% -74.12%
Acquisitions
YoY Change
Other Investing Activities $38.16M $18.43M -$36.18M
YoY Change -140.69% -150.85% -351.7%
Cash From Investing Activities $38.13M $18.35M -$36.69M
YoY Change -140.59% -150.48% -395.59%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net $777.0K
YoY Change -77.92%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities 1.651M 287.0K 118.1M
YoY Change -98.6% 31.65% 40.08%
NET CHANGE
Cash From Operating Activities -25.28M -23.16M -90.97M
Cash From Investing Activities 38.13M 18.35M -36.69M
Cash From Financing Activities 1.651M 287.0K 118.1M
Net Change In Cash 14.50M -4.517M -9.535M
YoY Change -4082.14% -91.91% 2936.62%
FREE CASH FLOW
Cash From Operating Activities -$25.28M -$23.16M -$90.97M
Capital Expenditures $28.00K $77.00K $508.0K
Free Cash Flow -$25.31M -$23.24M -$91.47M
YoY Change 4.22% 17.28% -7.62%

Facts In Submission

Frame Concept Type Concept / XBRL Key Value Unit
CY2023 dei Entity Central Index Key
EntityCentralIndexKey
0001680581
CY2023 dei Amendment Flag
AmendmentFlag
false
CY2023 dei Document Fiscal Period Focus
DocumentFiscalPeriodFocus
FY
CY2023 dei Current Fiscal Year End Date
CurrentFiscalYearEndDate
--12-31
CY2023Q4 us-gaap Commitments And Contingencies
CommitmentsAndContingencies
CY2022Q4 us-gaap Commitments And Contingencies
CommitmentsAndContingencies
CY2023 us-gaap Number Of Operating Segments
NumberOfOperatingSegments
1
CY2023 us-gaap Open Tax Year
OpenTaxYear
2016 2017 2018 2019 2020
CY2023 dei Document Type
DocumentType
10-K
CY2023 dei Document Annual Report
DocumentAnnualReport
true
CY2023 dei Document Period End Date
DocumentPeriodEndDate
2023-12-31
CY2023 dei Document Fiscal Year Focus
DocumentFiscalYearFocus
2023
CY2023 dei Entity Ex Transition Period
EntityExTransitionPeriod
false
CY2023 dei Entity File Number
EntityFileNumber
001-38978
CY2023 dei Entity Registrant Name
EntityRegistrantName
FULCRUM THERAPEUTICS, INC.
CY2023 dei Entity Incorporation State Country Code
EntityIncorporationStateCountryCode
DE
CY2023 dei Entity Tax Identification Number
EntityTaxIdentificationNumber
47-4839948
CY2023 dei Entity Address Address Line1
EntityAddressAddressLine1
26 Landsdowne Street
CY2023 dei Entity Address City Or Town
EntityAddressCityOrTown
Cambridge
CY2023 dei Entity Address State Or Province
EntityAddressStateOrProvince
MA
CY2023 dei Entity Address Postal Zip Code
EntityAddressPostalZipCode
02139
CY2023 dei City Area Code
CityAreaCode
617
CY2023 dei Local Phone Number
LocalPhoneNumber
651-8851
CY2023 dei Security12b Title
Security12bTitle
Common stock, par value $0.001 per share
CY2023 dei Trading Symbol
TradingSymbol
FULC
CY2023 dei Security Exchange Name
SecurityExchangeName
NASDAQ
CY2023 dei Entity Well Known Seasoned Issuer
EntityWellKnownSeasonedIssuer
No
CY2023 dei Entity Voluntary Filers
EntityVoluntaryFilers
No
CY2023 dei Entity Current Reporting Status
EntityCurrentReportingStatus
Yes
CY2023 dei Entity Interactive Data Current
EntityInteractiveDataCurrent
Yes
CY2023 dei Entity Filer Category
EntityFilerCategory
Non-accelerated Filer
CY2023 dei Entity Small Business
EntitySmallBusiness
true
CY2023 dei Entity Emerging Growth Company
EntityEmergingGrowthCompany
true
CY2023 dei Document Transition Report
DocumentTransitionReport
false
CY2023 dei Icfr Auditor Attestation Flag
IcfrAuditorAttestationFlag
false
CY2023 dei Document Fin Stmt Error Correction Flag
DocumentFinStmtErrorCorrectionFlag
false
CY2023 dei Entity Shell Company
EntityShellCompany
false
CY2023Q2 dei Entity Public Float
EntityPublicFloat
163559530000
CY2024Q1 dei Entity Common Stock Shares Outstanding
EntityCommonStockSharesOutstanding
61935171
CY2023 dei Auditor Firm
AuditorFirmId
42
CY2023 dei Auditor Name
AuditorName
Ernst & Young LLP
CY2023 dei Auditor Location
AuditorLocation
Boston, Massachusetts
CY2023Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
25563000
CY2022Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
35098000
CY2023Q4 us-gaap Marketable Securities
MarketableSecurities
210658000
CY2022Q4 us-gaap Marketable Securities
MarketableSecurities
167823000
CY2023Q4 us-gaap Unbilled Receivables Current
UnbilledReceivablesCurrent
537000
CY2022Q4 us-gaap Unbilled Receivables Current
UnbilledReceivablesCurrent
229000
CY2023Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
5441000
CY2022Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
4369000
CY2023Q4 us-gaap Assets Current
AssetsCurrent
242199000
CY2022Q4 us-gaap Assets Current
AssetsCurrent
207519000
CY2023Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
5216000
CY2022Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
6906000
CY2023Q4 us-gaap Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
7176000
CY2022Q4 us-gaap Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
9063000
CY2023Q4 us-gaap Restricted Cash Noncurrent
RestrictedCashNoncurrent
1092000
CY2022Q4 us-gaap Restricted Cash Noncurrent
RestrictedCashNoncurrent
1092000
CY2023Q4 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
2011000
CY2022Q4 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
2105000
CY2023Q4 us-gaap Assets
Assets
257694000
CY2022Q4 us-gaap Assets
Assets
226685000
CY2023Q4 us-gaap Accounts Payable Current
AccountsPayableCurrent
2757000
CY2022Q4 us-gaap Accounts Payable Current
AccountsPayableCurrent
3638000
CY2023Q4 fulc Accrued Liabilities And Other Current Liabilities
AccruedLiabilitiesAndOtherCurrentLiabilities
8726000
CY2022Q4 fulc Accrued Liabilities And Other Current Liabilities
AccruedLiabilitiesAndOtherCurrentLiabilities
9551000
CY2023Q4 us-gaap Deferred Revenue Current
DeferredRevenueCurrent
0
CY2022Q4 us-gaap Deferred Revenue Current
DeferredRevenueCurrent
934000
CY2023Q4 us-gaap Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
2192000
CY2022Q4 us-gaap Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
2602000
CY2023Q4 us-gaap Liabilities Current
LiabilitiesCurrent
13675000
CY2022Q4 us-gaap Liabilities Current
LiabilitiesCurrent
16725000
CY2023Q4 us-gaap Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
8629000
CY2022Q4 us-gaap Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
10821000
CY2023Q4 us-gaap Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
197000
CY2022Q4 us-gaap Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
197000
CY2023Q4 us-gaap Liabilities
Liabilities
22501000
CY2022Q4 us-gaap Liabilities
Liabilities
27743000
CY2023Q4 us-gaap Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
0.001
CY2022Q4 us-gaap Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
0.001
CY2023Q4 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
5000000
CY2022Q4 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
5000000
CY2023Q4 us-gaap Preferred Stock Shares Issued
PreferredStockSharesIssued
0
CY2022Q4 us-gaap Preferred Stock Shares Issued
PreferredStockSharesIssued
0
CY2023Q4 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2022Q4 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2023Q4 us-gaap Preferred Stock Value
PreferredStockValue
0
CY2022Q4 us-gaap Preferred Stock Value
PreferredStockValue
0
CY2023Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.001
CY2022Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.001
CY2023Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
200000000
CY2022Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
200000000
CY2023Q4 us-gaap Common Stock Shares Issued
CommonStockSharesIssued
61915367
CY2023Q4 us-gaap Common Stock Shares Outstanding
CommonStockSharesOutstanding
61915367
CY2022Q4 us-gaap Common Stock Shares Issued
CommonStockSharesIssued
52099211
CY2022Q4 us-gaap Common Stock Shares Outstanding
CommonStockSharesOutstanding
52099211
CY2023Q4 us-gaap Common Stock Value
CommonStockValue
62000
CY2022Q4 us-gaap Common Stock Value
CommonStockValue
52000
CY2023Q4 us-gaap Additional Paid In Capital Common Stock
AdditionalPaidInCapitalCommonStock
744940000
CY2022Q4 us-gaap Additional Paid In Capital Common Stock
AdditionalPaidInCapitalCommonStock
612025000
CY2023Q4 us-gaap Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
-136000
CY2022Q4 us-gaap Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
-797000
CY2023Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
-509673000
CY2022Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
-412338000
CY2023Q4 us-gaap Stockholders Equity
StockholdersEquity
235193000
CY2022Q4 us-gaap Stockholders Equity
StockholdersEquity
198942000
CY2023Q4 us-gaap Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
257694000
CY2022Q4 us-gaap Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
226685000
CY2023 us-gaap Revenue From Contract With Customer Including Assessed Tax
RevenueFromContractWithCustomerIncludingAssessedTax
2805000
CY2022 us-gaap Revenue From Contract With Customer Including Assessed Tax
RevenueFromContractWithCustomerIncludingAssessedTax
6342000
CY2023 us-gaap Research And Development Expense
ResearchAndDevelopmentExpense
71801000
CY2022 us-gaap Research And Development Expense
ResearchAndDevelopmentExpense
76782000
CY2023 us-gaap General And Administrative Expense
GeneralAndAdministrativeExpense
41668000
CY2022 us-gaap General And Administrative Expense
GeneralAndAdministrativeExpense
41694000
CY2023 us-gaap Restructuring And Related Cost Incurred Cost
RestructuringAndRelatedCostIncurredCost
0
CY2022 us-gaap Restructuring And Related Cost Incurred Cost
RestructuringAndRelatedCostIncurredCost
427000
CY2023 us-gaap Operating Expenses
OperatingExpenses
113469000
CY2022 us-gaap Operating Expenses
OperatingExpenses
118903000
CY2022 us-gaap Increase Decrease In Accounts And Other Receivables
IncreaseDecreaseInAccountsAndOtherReceivables
-2500000
CY2023 us-gaap Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
308000
CY2022 us-gaap Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
-908000
CY2023 us-gaap Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
1072000
CY2022 us-gaap Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
170000
CY2023 fulc Increase Decrease In Operating Lease Assets And Liabilities
IncreaseDecreaseInOperatingLeaseAssetsAndLiabilities
715000
CY2023 us-gaap Operating Income Loss
OperatingIncomeLoss
-110664000
CY2022 us-gaap Operating Income Loss
OperatingIncomeLoss
-112561000
CY2023 us-gaap Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
13329000
CY2022 us-gaap Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
2690000
CY2023 us-gaap Net Income Loss
NetIncomeLoss
-97335000
CY2022 us-gaap Net Income Loss
NetIncomeLoss
-109871000
CY2023 us-gaap Earnings Per Share Basic
EarningsPerShareBasic
-1.59
CY2023 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
-1.59
CY2022 us-gaap Earnings Per Share Basic
EarningsPerShareBasic
-2.44
CY2022 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
-2.44
CY2023 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
61310
CY2023 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
61310
CY2022 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
44991
CY2022 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
44991
CY2023 us-gaap Net Income Loss
NetIncomeLoss
-97335000
CY2022 us-gaap Net Income Loss
NetIncomeLoss
-109871000
CY2023 us-gaap Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
661000
CY2022 us-gaap Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
-400000
CY2023 us-gaap Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
661000
CY2022 us-gaap Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
-400000
CY2023 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
-96674000
CY2022 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
-110271000
CY2021Q4 us-gaap Stockholders Equity
StockholdersEquity
211539000
CY2022 us-gaap Stock Issued During Period Value New Issues
StockIssuedDuringPeriodValueNewIssues
80804000
CY2022 us-gaap Stock Issued During Period Value Employee Benefit Plan
StockIssuedDuringPeriodValueEmployeeBenefitPlan
3519000
CY2022 us-gaap Stock Issued During Period Value Restricted Stock Award Gross
StockIssuedDuringPeriodValueRestrictedStockAwardGross
1000
CY2022 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
13350000
CY2022 us-gaap Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
-400000
CY2022 us-gaap Net Income Loss
NetIncomeLoss
-109871000
CY2022Q4 us-gaap Stockholders Equity
StockholdersEquity
198942000
CY2023 us-gaap Stock Issued During Period Value New Issues
StockIssuedDuringPeriodValueNewIssues
117346000
CY2023 us-gaap Stock Issued During Period Value Employee Benefit Plan
StockIssuedDuringPeriodValueEmployeeBenefitPlan
777000
CY2023 us-gaap Stock Issued During Period Value Restricted Stock Award Gross
StockIssuedDuringPeriodValueRestrictedStockAwardGross
0
CY2023 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
14802000
CY2023 us-gaap Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
661000
CY2023 us-gaap Net Income Loss
NetIncomeLoss
-97335000
CY2023Q4 us-gaap Stockholders Equity
StockholdersEquity
235193000
CY2023 us-gaap Profit Loss
ProfitLoss
-97335000
CY2022 us-gaap Profit Loss
ProfitLoss
-109872000
CY2023 us-gaap Depreciation
Depreciation
2172000
CY2022 us-gaap Depreciation
Depreciation
2414000
CY2023 us-gaap Share Based Compensation
ShareBasedCompensation
14802000
CY2022 us-gaap Share Based Compensation
ShareBasedCompensation
13350000
CY2023 us-gaap Accretion Amortization Of Discounts And Premiums Investments
AccretionAmortizationOfDiscountsAndPremiumsInvestments
5991000
CY2022 us-gaap Accretion Amortization Of Discounts And Premiums Investments
AccretionAmortizationOfDiscountsAndPremiumsInvestments
-152000
CY2023 us-gaap Increase Decrease In Accounts And Other Receivables
IncreaseDecreaseInAccountsAndOtherReceivables
0
CY2022 fulc Increase Decrease In Operating Lease Assets And Liabilities
IncreaseDecreaseInOperatingLeaseAssetsAndLiabilities
372000
CY2023 us-gaap Increase Decrease In Other Operating Assets
IncreaseDecreaseInOtherOperatingAssets
-94000
CY2022 us-gaap Increase Decrease In Other Operating Assets
IncreaseDecreaseInOtherOperatingAssets
1562000
CY2023 us-gaap Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
-853000
CY2022 us-gaap Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
-1176000
CY2023 us-gaap Increase Decrease In Accrued Liabilities And Other Operating Liabilities
IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities
-825000
CY2022 us-gaap Increase Decrease In Accrued Liabilities And Other Operating Liabilities
IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities
555000
CY2023 us-gaap Increase Decrease In Deferred Revenue
IncreaseDecreaseInDeferredRevenue
-934000
CY2022 us-gaap Increase Decrease In Deferred Revenue
IncreaseDecreaseInDeferredRevenue
-3777000
CY2023 us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
-90965000
CY2022 us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
-97050000
CY2023 us-gaap Payments To Acquire Marketable Securities
PaymentsToAcquireMarketableSecurities
194892000
CY2022 us-gaap Payments To Acquire Marketable Securities
PaymentsToAcquireMarketableSecurities
151153000
CY2023 fulc Proceeds From Maturity Of Marketable Securities
ProceedsFromMaturityOfMarketableSecurities
158708000
CY2022 fulc Proceeds From Maturity Of Marketable Securities
ProceedsFromMaturityOfMarketableSecurities
165529000
CY2023 us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
508000
CY2022 us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
1963000
CY2023 us-gaap Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
-36692000
CY2022 us-gaap Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
12413000
CY2023 fulc Proceeds From Issuance Of Common Stock In Connection With Follow On Offering
ProceedsFromIssuanceOfCommonStockInConnectionWithFollowOnOffering
117345000
CY2022 fulc Proceeds From Issuance Of Common Stock In Connection With Follow On Offering
ProceedsFromIssuanceOfCommonStockInConnectionWithFollowOnOffering
80804000
CY2023 us-gaap Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
777000
CY2022 us-gaap Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
3519000
CY2023 us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
118122000
CY2022 us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
84323000
CY2023 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
-9535000
CY2022 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
-314000
CY2022Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
36190000
CY2021Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
36504000
CY2023Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
26655000
CY2022Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
36190000
CY2023 fulc Cash Paid For Operating Lease Liabilities
CashPaidForOperatingLeaseLiabilities
3333000
CY2022 fulc Cash Paid For Operating Lease Liabilities
CashPaidForOperatingLeaseLiabilities
2219000
CY2022 us-gaap Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
26000
CY2023Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
25563000
CY2022Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
35098000
CY2023Q4 us-gaap Restricted Cash Noncurrent
RestrictedCashNoncurrent
1092000
CY2022Q4 us-gaap Restricted Cash Noncurrent
RestrictedCashNoncurrent
1092000
CY2023Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
26655000
CY2022Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
36190000
CY2022Q3 us-gaap Stock Issued During Period Shares New Issues
StockIssuedDuringPeriodSharesNewIssues
11029410
CY2022Q3 us-gaap Shares Issued Price Per Share
SharesIssuedPricePerShare
7.82
CY2022Q3 us-gaap Proceeds From Issuance Initial Public Offering
ProceedsFromIssuanceInitialPublicOffering
80800000
CY2023Q1 us-gaap Stock Issued During Period Shares New Issues
StockIssuedDuringPeriodSharesNewIssues
9615384
CY2023Q1 us-gaap Shares Issued Price Per Share
SharesIssuedPricePerShare
13
CY2023Q1 us-gaap Proceeds From Issuance Initial Public Offering
ProceedsFromIssuanceInitialPublicOffering
117300000
CY2023Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
-509700000
CY2023 us-gaap Use Of Estimates
UseOfEstimates
<p style="font-size:10pt;margin-top:18pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:italic;min-width:fit-content;">Use of Estimates</span><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:italic;min-width:fit-content;"> </span></p><p style="text-indent:4.533%;font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">The </span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">preparation of financial statements in accordance with GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;"> </span></p><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">the </span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">date of the financial statements, and the reported amount of expenses during the reported periods. Estimates inherent in the preparation of these consolidated financial statements include, but are not limited to, estimates related to revenue recognition, accrued expenses, stock-based compensation expense, and income taxes. The Company bases its estimates on historical experience and other market specific or other relevant assumptions it believes to be reasonable under the circumstances. On an ongoing basis, management evaluates its estimates as there are changes in circumstances, facts and experience. Actual results could differ from those estimates or assumptions.</span>
CY2023 us-gaap Asset Impairment Charges
AssetImpairmentCharges
0
CY2022 us-gaap Asset Impairment Charges
AssetImpairmentCharges
0
CY2023Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
12760000
CY2022Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
10662000
CY2023 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Payments
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPayments
0
CY2023Q4 fulc Cash And Cash Equivalents Amortized Cost
CashAndCashEquivalentsAmortizedCost
25563000
CY2023Q4 fulc Cash And Cash Equivalents Accumulated Gross Unrealized Gains Before Tax
CashAndCashEquivalentsAccumulatedGrossUnrealizedGainsBeforeTax
0
CY2023Q4 fulc Cash And Cash Equivalents Accumulated Gross Unrealized Losses Before Tax
CashAndCashEquivalentsAccumulatedGrossUnrealizedLossesBeforeTax
0
CY2023Q4 us-gaap Cash And Cash Equivalents Fair Value Disclosure
CashAndCashEquivalentsFairValueDisclosure
25563000
CY2023Q4 fulc Fair Value Transfers Between Levels
FairValueTransfersBetweenLevels
0
CY2022Q4 fulc Fair Value Transfers Between Levels
FairValueTransfersBetweenLevels
0
CY2023Q4 us-gaap Available For Sale Debt Securities Amortized Cost Basis
AvailableForSaleDebtSecuritiesAmortizedCostBasis
210794000
CY2023Q4 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
131000
CY2023Q4 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
267000
CY2023Q4 us-gaap Available For Sale Securities Debt Securities
AvailableForSaleSecuritiesDebtSecurities
210658000
CY2023Q4 fulc Cash Equivalents And Marketable Securities Amortized Cost Basis
CashEquivalentsAndMarketableSecuritiesAmortizedCostBasis
236357000
CY2023Q4 fulc Cash Equivalents And Marketable Securities Accumulated Gross Unrealized Gains Before Tax
CashEquivalentsAndMarketableSecuritiesAccumulatedGrossUnrealizedGainsBeforeTax
131000
CY2023Q4 fulc Cash Equivalents And Marketable Securities Accumulated Gross Unrealized Loss Before Tax
CashEquivalentsAndMarketableSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
267000
CY2023Q4 fulc Cash Equivalents And Marketable Securities Fair Value Disclosure
CashEquivalentsAndMarketableSecuritiesFairValueDisclosure
236221000
CY2022Q4 fulc Cash And Cash Equivalents Amortized Cost
CashAndCashEquivalentsAmortizedCost
35102000
CY2022Q4 fulc Cash And Cash Equivalents Accumulated Gross Unrealized Gains Before Tax
CashAndCashEquivalentsAccumulatedGrossUnrealizedGainsBeforeTax
0
CY2022Q4 fulc Cash And Cash Equivalents Accumulated Gross Unrealized Losses Before Tax
CashAndCashEquivalentsAccumulatedGrossUnrealizedLossesBeforeTax
-4000
CY2022Q4 us-gaap Cash And Cash Equivalents Fair Value Disclosure
CashAndCashEquivalentsFairValueDisclosure
35098000
CY2022Q4 us-gaap Available For Sale Debt Securities Amortized Cost Basis
AvailableForSaleDebtSecuritiesAmortizedCostBasis
168616000
CY2022Q4 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
3000
CY2022Q4 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
796000
CY2022Q4 us-gaap Available For Sale Securities Debt Securities
AvailableForSaleSecuritiesDebtSecurities
167823000
CY2022Q4 fulc Cash Equivalents And Marketable Securities Amortized Cost Basis
CashEquivalentsAndMarketableSecuritiesAmortizedCostBasis
203718000
CY2022Q4 fulc Cash Equivalents And Marketable Securities Accumulated Gross Unrealized Gains Before Tax
CashEquivalentsAndMarketableSecuritiesAccumulatedGrossUnrealizedGainsBeforeTax
3000
CY2022Q4 fulc Cash Equivalents And Marketable Securities Accumulated Gross Unrealized Loss Before Tax
CashEquivalentsAndMarketableSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
800000
CY2022Q4 fulc Cash Equivalents And Marketable Securities Fair Value Disclosure
CashEquivalentsAndMarketableSecuritiesFairValueDisclosure
202921000
CY2023 fulc Proceeds From Sale Of Marketable Securities
ProceedsFromSaleOfMarketableSecurities
0
CY2023Q4 us-gaap Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months
DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
130200000
CY2023Q4 fulc Debt Securities Available For Sale Continuous Unrealized Loss Position Greater Than12 Months
DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionGreaterThan12Months
33800000
CY2023Q4 fulc Aggregate Fair Value Of Securities Remaining Contractual Maturity Of Greater Than One Year
AggregateFairValueOfSecuritiesRemainingContractualMaturityOfGreaterThanOneYear
25100000
CY2023Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
17976000
CY2022Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
17568000
CY2023Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
5216000
CY2022Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
6906000
CY2023 us-gaap Depreciation
Depreciation
2200000
CY2022 us-gaap Depreciation
Depreciation
2400000
CY2023Q4 fulc Prepaid Expenses
PrepaidExpenses
3658000
CY2022Q4 fulc Prepaid Expenses
PrepaidExpenses
3425000
CY2023Q4 fulc Prepaid Sign On Bonuses Subject To Vesting Provisions
PrepaidSignOnBonusesSubjectToVestingProvisions
71000
CY2022Q4 fulc Prepaid Sign On Bonuses Subject To Vesting Provisions
PrepaidSignOnBonusesSubjectToVestingProvisions
92000
CY2023Q4 us-gaap Interest Receivable
InterestReceivable
1712000
CY2022Q4 us-gaap Interest Receivable
InterestReceivable
852000
CY2023Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
5441000
CY2022Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
4369000
CY2023Q4 fulc Accrued Research And Development Expenses
AccruedResearchAndDevelopmentExpenses
3164000
CY2022Q4 fulc Accrued Research And Development Expenses
AccruedResearchAndDevelopmentExpenses
4700000
CY2023Q4 us-gaap Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
4712000
CY2022Q4 us-gaap Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
4211000
CY2023Q4 us-gaap Accrued Professional Fees Current
AccruedProfessionalFeesCurrent
454000
CY2022Q4 us-gaap Accrued Professional Fees Current
AccruedProfessionalFeesCurrent
535000
CY2023Q4 us-gaap Other Liabilities Current
OtherLiabilitiesCurrent
396000
CY2022Q4 us-gaap Other Liabilities Current
OtherLiabilitiesCurrent
105000
CY2023Q4 fulc Accrued Liabilities And Other Current Liabilities
AccruedLiabilitiesAndOtherCurrentLiabilities
8726000
CY2022Q4 fulc Accrued Liabilities And Other Current Liabilities
AccruedLiabilitiesAndOtherCurrentLiabilities
9551000
CY2022Q4 us-gaap Common Stock Capital Shares Reserved For Future Issuance
CommonStockCapitalSharesReservedForFutureIssuance
9913011
CY2023Q4 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
5000000
CY2022Q4 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
5000000
CY2023Q4 us-gaap Preferred Stock Shares Issued
PreferredStockSharesIssued
0
CY2022Q4 us-gaap Preferred Stock Shares Issued
PreferredStockSharesIssued
0
CY2023Q4 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2022Q4 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2023Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
200000000
CY2022Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
200000000
CY2023Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.001
CY2022Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.001
CY2023 us-gaap Common Stock Voting Rights
CommonStockVotingRights
Each share of common stock entitles the holder to one vote on all matters submitted to a vote of the Company’s stockholders
CY2023Q4 fulc Number Of Common Stock Voting Rights
NumberOfCommonStockVotingRights
1
CY2023 us-gaap Dividends
Dividends
0
CY2023Q4 us-gaap Common Stock Capital Shares Reserved For Future Issuance
CommonStockCapitalSharesReservedForFutureIssuance
15388773
CY2023 us-gaap Share Based Compensation
ShareBasedCompensation
14802000
CY2022 us-gaap Share Based Compensation
ShareBasedCompensation
13350000
CY2023Q4 us-gaap Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
30400000
CY2023 us-gaap Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
P2Y10M28D
CY2023 us-gaap Operating Lease Expense
OperatingLeaseExpense
1900000
CY2023 us-gaap Variable Lease Payment
VariableLeasePayment
900000
CY2022 us-gaap Operating Lease Expense
OperatingLeaseExpense
1900000
CY2022 us-gaap Variable Lease Payment
VariableLeasePayment
1000000
CY2023 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.21
CY2022 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.21
CY2023 us-gaap Effective Income Tax Rate Reconciliation Nondeductible Expense
EffectiveIncomeTaxRateReconciliationNondeductibleExpense
-0.0071
CY2022 us-gaap Effective Income Tax Rate Reconciliation Nondeductible Expense
EffectiveIncomeTaxRateReconciliationNondeductibleExpense
-0.0046
CY2023 us-gaap Effective Income Tax Rate Reconciliation Tax Credits Research
EffectiveIncomeTaxRateReconciliationTaxCreditsResearch
0.0147
CY2022 us-gaap Effective Income Tax Rate Reconciliation Tax Credits Research
EffectiveIncomeTaxRateReconciliationTaxCreditsResearch
0.0144
CY2023 fulc Effective Income Tax Rate Reconciliation Federal Orphan Drug Credits
EffectiveIncomeTaxRateReconciliationFederalOrphanDrugCredits
0.0941
CY2022 fulc Effective Income Tax Rate Reconciliation Federal Orphan Drug Credits
EffectiveIncomeTaxRateReconciliationFederalOrphanDrugCredits
0.0723
CY2023 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
0.0592
CY2022 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
0.0578
CY2023 fulc Effective Income Tax Rate Reconciliation Officers Compensation Percent
EffectiveIncomeTaxRateReconciliationOfficersCompensationPercent
-0.0106
CY2022 fulc Effective Income Tax Rate Reconciliation Officers Compensation Percent
EffectiveIncomeTaxRateReconciliationOfficersCompensationPercent
-0.0023
CY2023 fulc Effective Income Tax Rate Reconciliation Ownership Change Percent
EffectiveIncomeTaxRateReconciliationOwnershipChangePercent
-0
CY2022 fulc Effective Income Tax Rate Reconciliation Ownership Change Percent
EffectiveIncomeTaxRateReconciliationOwnershipChangePercent
0.0292
CY2023 us-gaap Effective Income Tax Rate Reconciliation Other Reconciling Items Percent
EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent
-0.001
CY2022 us-gaap Effective Income Tax Rate Reconciliation Other Reconciling Items Percent
EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent
-0.0013
CY2023 us-gaap Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
-0.3593
CY2022 us-gaap Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
-0.3171
CY2023 us-gaap Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
0
CY2022 us-gaap Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
0
CY2022Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
85622000
CY2023Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
75005000
CY2022Q4 fulc Deferred Tax Assets Capitalized Research And Development Costs
DeferredTaxAssetsCapitalizedResearchAndDevelopmentCosts
30019000
CY2023Q4 fulc Deferred Tax Assets Capitalized Research And Development Costs
DeferredTaxAssetsCapitalizedResearchAndDevelopmentCosts
16911000
CY2022Q4 fulc Deferred Tax Assets Orphan Drug Credit Carryforwards
DeferredTaxAssetsOrphanDrugCreditCarryforwards
23790000
CY2023Q4 fulc Deferred Tax Assets Orphan Drug Credit Carryforwards
DeferredTaxAssetsOrphanDrugCreditCarryforwards
14628000
CY2022Q4 us-gaap Deferred Tax Assets Tax Credit Carryforwards Research
DeferredTaxAssetsTaxCreditCarryforwardsResearch
11569000
CY2023Q4 us-gaap Deferred Tax Assets Tax Credit Carryforwards Research
DeferredTaxAssetsTaxCreditCarryforwardsResearch
10140000
CY2022Q4 us-gaap Deferred Tax Assets Goodwill And Intangible Assets
DeferredTaxAssetsGoodwillAndIntangibleAssets
6291000
CY2023Q4 us-gaap Deferred Tax Assets Goodwill And Intangible Assets
DeferredTaxAssetsGoodwillAndIntangibleAssets
6918000
CY2022Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
6740000
CY2023Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
5232000
CY2022Q4 fulc Deferred Tax Assets Operating Lease Liability
DeferredTaxAssetsOperatingLeaseLiability
2911000
CY2023Q4 fulc Deferred Tax Assets Operating Lease Liability
DeferredTaxAssetsOperatingLeaseLiability
3613000
CY2022Q4 us-gaap Deferred Tax Assets Deferred Income
DeferredTaxAssetsDeferredIncome
0
CY2023Q4 us-gaap Deferred Tax Assets Deferred Income
DeferredTaxAssetsDeferredIncome
251000
CY2022Q4 us-gaap Deferred Tax Assets Gross
DeferredTaxAssetsGross
166942000
CY2023Q4 us-gaap Deferred Tax Assets Gross
DeferredTaxAssetsGross
132698000
CY2022Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
164483000
CY2023Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
129512000
CY2022Q4 us-gaap Deferred Tax Assets Net
DeferredTaxAssetsNet
2459000
CY2023Q4 us-gaap Deferred Tax Assets Net
DeferredTaxAssetsNet
3186000
CY2022Q4 us-gaap Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
2459000
CY2023Q4 us-gaap Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
3186000
CY2022Q4 us-gaap Deferred Tax Assets Liabilities Net
DeferredTaxAssetsLiabilitiesNet
0
CY2023Q4 us-gaap Deferred Tax Assets Liabilities Net
DeferredTaxAssetsLiabilitiesNet
0
CY2023Q4 us-gaap Operating Loss Carryforwards Valuation Allowance
OperatingLossCarryforwardsValuationAllowance
35000000
CY2023Q4 us-gaap Unrecognized Tax Benefits Interest On Income Taxes Accrued
UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued
0
CY2022Q4 us-gaap Unrecognized Tax Benefits Interest On Income Taxes Accrued
UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued
0
CY2023Q4 us-gaap Unrecognized Tax Benefits Income Tax Penalties Accrued
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued
0
CY2022Q4 us-gaap Unrecognized Tax Benefits Income Tax Penalties Accrued
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued
0
CY2023 us-gaap Unrecognized Tax Benefits Income Tax Penalties And Interest Expense
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
0
CY2022 us-gaap Unrecognized Tax Benefits Income Tax Penalties And Interest Expense
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
0
CY2023 fulc Defined Contribution Plan Name
DefinedContributionPlanName
401(k)
CY2023 us-gaap Defined Contribution Plan Employer Discretionary Contribution Amount
DefinedContributionPlanEmployerDiscretionaryContributionAmount
700000
CY2022 us-gaap Defined Contribution Plan Employer Discretionary Contribution Amount
DefinedContributionPlanEmployerDiscretionaryContributionAmount
800000
CY2023 us-gaap Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
10047234
CY2022 us-gaap Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
6580798

Files In Submission

Name View Source Status
FilingSummary.xml Edgar Link unprocessable
0000950170-24-021074-index-headers.html Edgar Link pending
0000950170-24-021074-index.html Edgar Link pending
0000950170-24-021074.txt Edgar Link pending
0000950170-24-021074-xbrl.zip Edgar Link pending
Financial_Report.xlsx Edgar Link pending
fulc-20231231.htm Edgar Link pending
fulc-20231231.xsd Edgar Link pending
fulc-ex10_12.htm Edgar Link pending
fulc-ex21_1.htm Edgar Link pending
fulc-ex23_1.htm Edgar Link pending
fulc-ex31_1.htm Edgar Link pending
fulc-ex31_2.htm Edgar Link pending
fulc-ex32_1.htm Edgar Link pending
fulc-ex32_2.htm Edgar Link pending
fulc-ex97_1.htm Edgar Link pending
img44875045_0.jpg Edgar Link pending
img44875045_1.jpg Edgar Link pending
img44875045_10.jpg Edgar Link pending
img44875045_11.jpg Edgar Link pending
img44875045_12.jpg Edgar Link pending
img44875045_13.jpg Edgar Link pending
img44875045_2.jpg Edgar Link pending
img44875045_3.jpg Edgar Link pending
img44875045_4.jpg Edgar Link pending
img44875045_5.jpg Edgar Link pending
img44875045_6.jpg Edgar Link pending
img44875045_7.jpg Edgar Link pending
img44875045_8.jpg Edgar Link pending
img44875045_9.jpg Edgar Link pending
MetaLinks.json 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
R15.htm Edgar Link pending
R16.htm Edgar Link pending
R17.htm Edgar Link pending
R18.htm Edgar Link pending
fulc-20231231_htm.xml Edgar Link completed
R19.htm Edgar Link pending
R2.htm Edgar Link pending
R20.htm Edgar Link pending
R21.htm Edgar Link pending
R22.htm Edgar Link pending
R23.htm Edgar Link pending
R24.htm Edgar Link pending
R25.htm Edgar Link pending
R26.htm Edgar Link pending
R27.htm Edgar Link pending
R28.htm Edgar Link pending
R29.htm Edgar Link pending
R3.htm Edgar Link pending
R30.htm Edgar Link pending
R31.htm Edgar Link pending
R32.htm Edgar Link pending
R33.htm Edgar Link pending
R34.htm Edgar Link pending
R35.htm Edgar Link pending
R36.htm Edgar Link pending
R37.htm Edgar Link pending
R38.htm Edgar Link pending
R39.htm Edgar Link pending
R4.htm Edgar Link pending
R40.htm Edgar Link pending
R41.htm Edgar Link pending
R42.htm Edgar Link pending
R43.htm Edgar Link pending
R44.htm Edgar Link pending
R45.htm Edgar Link pending
R46.htm Edgar Link pending
R47.htm Edgar Link pending
R48.htm Edgar Link pending
R49.htm Edgar Link pending
R5.htm Edgar Link pending
R50.htm Edgar Link pending
R51.htm Edgar Link pending
R52.htm Edgar Link pending
R53.htm Edgar Link pending
R54.htm Edgar Link pending
R55.htm Edgar Link pending
R56.htm Edgar Link pending
R57.htm Edgar Link pending
R58.htm Edgar Link pending
R59.htm Edgar Link pending
R6.htm Edgar Link pending
R60.htm Edgar Link pending
R61.htm Edgar Link pending
R62.htm Edgar Link pending
R63.htm Edgar Link pending
R7.htm Edgar Link pending
R8.htm Edgar Link pending
R9.htm Edgar Link pending
report.css Edgar Link pending
Show.js Edgar Link pending