2022 Q1 Form 10-K Financial Statement

#000156459022011123 Filed on March 21, 2022

View on sec.gov

Income Statement

Concept 2022 Q1 2021 Q4 2021
Revenue $0.00 $0.00 $0.00
YoY Change
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin $7.712M $7.735M $22.51M
YoY Change 93.23% 76.72% 414.3%
% of Gross Profit
Research & Development $18.25M $11.21M $37.93M
YoY Change 239.33% 75.35% 315.78%
% of Gross Profit
Depreciation & Amortization $400.0K $330.0K $700.0K
YoY Change 300.0% 334.21% 600.0%
% of Gross Profit
Operating Expenses $25.96M $18.94M $60.44M
YoY Change 177.09% 40.3% 347.73%
Operating Profit -$25.96M -$60.44M
YoY Change 177.09% 347.73%
Interest Expense $0.00 $0.00
YoY Change -100.0% -100.0%
% of Operating Profit
Other Income/Expense, Net $123.0K $10.00K $24.00K
YoY Change -101.19% -100.02% -100.04%
Pretax Income -$25.84M -$18.93M -$70.76M
YoY Change 31.08% -72.31% 3.49%
Income Tax $0.00
% Of Pretax Income
Net Earnings -$25.84M -$18.93M -$70.80M
YoY Change 31.08% -72.31% 3.55%
Net Earnings / Revenue
Basic Earnings Per Share -$0.48 -$2.45
Diluted Earnings Per Share -$478.4K -$352.7K -$2.447M
COMMON SHARES
Basic Shares Outstanding 58.01M 58.08M 28.92M
Diluted Shares Outstanding 54.01M 28.92M

Balance Sheet

Concept 2022 Q1 2021 Q4 2021
SHORT-TERM ASSETS
Cash & Short-Term Investments $339.2M $377.0M $377.0M
YoY Change 91.61% 1805.65%
Cash & Equivalents $185.1M $377.0M $377.0M
Short-Term Investments $154.1M $0.00
Other Short-Term Assets $4.574M $4.760M $4.760M
YoY Change 40.7% 260.33%
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets $343.8M $381.7M $381.7M
YoY Change 90.69% 1708.92% 1708.92%
LONG-TERM ASSETS
Property, Plant & Equipment $9.374M $6.507M $18.08M
YoY Change 388.74% 345.38% 1137.58%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments $12.93M
YoY Change
Other Assets $711.0K $454.0K $2.170M
YoY Change -2.34%
Total Long-Term Assets $34.85M $20.25M $20.25M
YoY Change 1217.08% 1286.11% 1286.11%
TOTAL ASSETS
Total Short-Term Assets $343.8M $381.7M $381.7M
Total Long-Term Assets $34.85M $20.25M $20.25M
Total Assets $378.6M $402.0M $402.0M
YoY Change 106.99% 1681.54% 1681.54%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable $3.069M $2.453M $2.453M
YoY Change 91.1% 289.37% 289.37%
Accrued Expenses $500.0K $9.690M $9.690M
YoY Change -89.56% 311.29%
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 $12.77M $12.14M $12.14M
YoY Change 99.67% -62.11% -62.11%
LONG-TERM LIABILITIES
Long-Term Debt $0.00 $0.00 $0.00
YoY Change
Other Long-Term Liabilities $4.542M $5.794M $5.794M
YoY Change 6996.88% 1733.54% 1733.54%
Total Long-Term Liabilities $4.542M $5.794M $5.794M
YoY Change 6996.88% 1733.54% 1733.54%
TOTAL LIABILITIES
Total Short-Term Liabilities $12.77M $12.14M $12.14M
Total Long-Term Liabilities $4.542M $5.794M $5.794M
Total Liabilities $17.31M $17.94M $17.94M
YoY Change 168.03% -44.58% -44.58%
SHAREHOLDERS EQUITY
Retained Earnings -$167.2M -$141.4M
YoY Change 100.24%
Common Stock $1.000K $1.000K
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity $361.3M $384.1M $384.1M
YoY Change
Total Liabilities & Shareholders Equity $378.6M $402.0M $402.0M
YoY Change 106.99% 1681.54% 1681.54%

Cashflow Statement

Concept 2022 Q1 2021 Q4 2021
OPERATING ACTIVITIES
Net Income -$25.84M -$18.93M -$70.80M
YoY Change 31.08% -72.31% 3.55%
Depreciation, Depletion And Amortization $400.0K $330.0K $700.0K
YoY Change 300.0% 334.21% 600.0%
Cash From Operating Activities -$21.24M -$15.59M -$52.90M
YoY Change 163.52% 195.83% 506.58%
INVESTING ACTIVITIES
Capital Expenditures $3.273M -$981.0K $5.740M
YoY Change 809.17% 60.29% 271.52%
Acquisitions
YoY Change
Other Investing Activities -$167.4M
YoY Change
Cash From Investing Activities -$170.7M -$981.0K -$5.740M
YoY Change 47307.22% 60.29% 271.52%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities 0.000 313.0K 417.5M
YoY Change -100.0% -97.93% 1287.99%
NET CHANGE
Cash From Operating Activities -21.24M -15.59M -52.90M
Cash From Investing Activities -170.7M -981.0K -5.740M
Cash From Financing Activities 0.000 313.0K 417.5M
Net Change In Cash -191.9M -16.26M 358.9M
YoY Change -221.96% -276.02% 1711.49%
FREE CASH FLOW
Cash From Operating Activities -$21.24M -$15.59M -$52.90M
Capital Expenditures $3.273M -$981.0K $5.740M
Free Cash Flow -$24.51M -$14.61M -$58.64M
YoY Change 191.13% 213.63% 471.21%

Facts In Submission

Frame Concept Type Concept / XBRL Key Value Unit
CY2021 dei Entity Small Business
EntitySmallBusiness
true
CY2021 dei Entity Ex Transition Period
EntityExTransitionPeriod
false
CY2021 dei Entity Shell Company
EntityShellCompany
false
CY2020Q2 us-gaap Lessee Operating Lease Existence Of Option To Extend
LesseeOperatingLeaseExistenceOfOptionToExtend
true
CY2020Q2 us-gaap Lessee Operating Lease Term Of Contract
LesseeOperatingLeaseTermOfContract
P1Y
CY2021Q4 us-gaap Commitments And Contingencies
CommitmentsAndContingencies
CY2020Q4 us-gaap Commitments And Contingencies
CommitmentsAndContingencies
CY2021Q4 us-gaap Preferred Stock Value
PreferredStockValue
CY2020Q4 us-gaap Preferred Stock Value
PreferredStockValue
CY2021 dei Document Annual Report
DocumentAnnualReport
true
CY2021 dei Document Transition Report
DocumentTransitionReport
false
CY2021 dei Entity File Number
EntityFileNumber
001-40532
CY2021 dei Entity Incorporation State Country Code
EntityIncorporationStateCountryCode
DE
CY2021 dei Entity Tax Identification Number
EntityTaxIdentificationNumber
84-4867570
CY2021 dei Entity Address Address Line1
EntityAddressAddressLine1
201 Haskins Way
CY2021 dei Entity Address Address Line2
EntityAddressAddressLine2
Suite 210
CY2021 dei Entity Address City Or Town
EntityAddressCityOrTown
South San Francisco
CY2021 dei Entity Address State Or Province
EntityAddressStateOrProvince
CA
CY2021 dei Entity Address Postal Zip Code
EntityAddressPostalZipCode
94080
CY2021 dei City Area Code
CityAreaCode
650
CY2021 dei Entity Emerging Growth Company
EntityEmergingGrowthCompany
true
CY2021Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
-141351000
CY2021Q4 us-gaap Stockholders Equity
StockholdersEquity
384050000
CY2021Q4 us-gaap Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
401987000
CY2021 dei Local Phone Number
LocalPhoneNumber
484-0886
CY2021Q4 us-gaap Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
0.00001
CY2020Q4 us-gaap Assets
Assets
22564000
CY2020Q4 us-gaap Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
0.00001
CY2021 dei Security12b Title
Security12bTitle
Common Stock, par value $0.00001 per share
CY2021 dei Trading Symbol
TradingSymbol
GRPH
CY2021 dei Security Exchange Name
SecurityExchangeName
NASDAQ
CY2021 dei Entity Well Known Seasoned Issuer
EntityWellKnownSeasonedIssuer
No
CY2021 dei Entity Voluntary Filers
EntityVoluntaryFilers
No
CY2021 dei Entity Current Reporting Status
EntityCurrentReportingStatus
Yes
CY2021 dei Entity Interactive Data Current
EntityInteractiveDataCurrent
Yes
CY2021 dei Entity Filer Category
EntityFilerCategory
Non-accelerated Filer
CY2021Q2 dei Entity Public Float
EntityPublicFloat
817400000
CY2022Q1 dei Entity Common Stock Shares Outstanding
EntityCommonStockSharesOutstanding
58010823
CY2021Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
376976000
CY2020Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
19782000
CY2020Q4 us-gaap Restricted Cash Current
RestrictedCashCurrent
35000
CY2021Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
4760000
CY2020Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
1286000
CY2021Q4 us-gaap Assets Current
AssetsCurrent
381736000
CY2020Q4 us-gaap Assets Current
AssetsCurrent
21103000
CY2021Q4 us-gaap Restricted Cash Noncurrent
RestrictedCashNoncurrent
1716000
CY2021Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
6507000
CY2020Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
1461000
CY2021Q4 us-gaap Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
11574000
CY2021Q4 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
454000
CY2021Q4 us-gaap Assets
Assets
401987000
CY2021Q4 us-gaap Accounts Payable Current
AccountsPayableCurrent
2453000
CY2020Q4 us-gaap Accounts Payable Current
AccountsPayableCurrent
630000
CY2021Q4 us-gaap Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
2689000
CY2020Q4 us-gaap Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
466000
CY2021Q4 grph Accrued Research Costs
AccruedResearchCosts
633000
CY2020Q4 grph Accrued Research Costs
AccruedResearchCosts
1764000
CY2021Q4 grph Accrued Expenses And Other Current Liabilities
AccruedExpensesAndOtherCurrentLiabilities
886000
CY2020Q4 grph Accrued Expenses And Other Current Liabilities
AccruedExpensesAndOtherCurrentLiabilities
126000
CY2021Q4 us-gaap Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
5482000
CY2020Q4 grph Redeemable Convertible Preferred Stock Tranche Liability Current
RedeemableConvertiblePreferredStockTrancheLiabilityCurrent
29062000
CY2021Q4 us-gaap Liabilities Current
LiabilitiesCurrent
12143000
CY2020Q4 us-gaap Liabilities Current
LiabilitiesCurrent
32048000
CY2021Q4 us-gaap Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
5794000
CY2020Q4 us-gaap Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
316000
CY2021Q4 us-gaap Liabilities
Liabilities
17937000
CY2020Q4 us-gaap Liabilities
Liabilities
32364000
CY2021Q4 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
10000000
CY2020Q4 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
0
CY2021Q4 us-gaap Preferred Stock Shares Issued
PreferredStockSharesIssued
0
CY2021Q4 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2020Q4 us-gaap Preferred Stock Shares Issued
PreferredStockSharesIssued
0
CY2020Q4 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2021Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.00001
CY2020 us-gaap Operating Expenses
OperatingExpenses
13500000
CY2020 grph Issuance Of Common Stock To Stanford
IssuanceOfCommonStockToStanford
2772000
CY2020Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.00001
CY2020 us-gaap Operating Income Loss
OperatingIncomeLoss
-13500000
CY2020 grph Related Party Convertible Note And Accrued Interest Cancellation
RelatedPartyConvertibleNoteAndAccruedInterestCancellation
2225000
CY2021Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
300000000
CY2020Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
80000000
CY2021Q4 us-gaap Common Stock Shares Issued
CommonStockSharesIssued
58010823
CY2021Q4 us-gaap Common Stock Shares Outstanding
CommonStockSharesOutstanding
58010823
CY2020Q4 us-gaap Common Stock Shares Issued
CommonStockSharesIssued
10279102
CY2020Q4 us-gaap Common Stock Shares Outstanding
CommonStockSharesOutstanding
10279102
CY2021Q4 us-gaap Common Stock Value
CommonStockValue
1000
CY2021Q4 us-gaap Additional Paid In Capital
AdditionalPaidInCapital
525400000
CY2020Q4 us-gaap Additional Paid In Capital
AdditionalPaidInCapital
5183000
CY2020Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
-70591000
CY2020Q4 us-gaap Stockholders Equity
StockholdersEquity
-65408000
CY2020Q4 us-gaap Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
22564000
CY2021 us-gaap Research And Development Expense
ResearchAndDevelopmentExpense
37932000
CY2020 us-gaap Research And Development Expense
ResearchAndDevelopmentExpense
9123000
CY2021 us-gaap General And Administrative Expense
GeneralAndAdministrativeExpense
22511000
CY2020 us-gaap General And Administrative Expense
GeneralAndAdministrativeExpense
4377000
CY2021 us-gaap Operating Expenses
OperatingExpenses
60443000
CY2021 us-gaap Operating Income Loss
OperatingIncomeLoss
-60443000
CY2021 us-gaap Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
24000
CY2020 grph Change In Fair Value Of Redeemable Convertible Preferred Stock Tranche Liability
ChangeInFairValueOfRedeemableConvertiblePreferredStockTrancheLiability
54833000
CY2021 grph Net Income Loss And Comprehensive Income Loss
NetIncomeLossAndComprehensiveIncomeLoss
-70760000
CY2021 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-2.45
CY2020 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-29.93
CY2021 us-gaap Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
28919255
CY2020 us-gaap Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
2284087
CY2019Q4 us-gaap Stockholders Equity
StockholdersEquity
-2218000
CY2020 us-gaap Payments Of Stock Issuance Costs
PaymentsOfStockIssuanceCosts
184000
CY2020 grph Fair Value Of Tranche Liability
FairValueOfTrancheLiability
3329000
CY2020 grph Adjustments To Additional Paid In Capital Obligation To Issue Common Stock Shares For License
AdjustmentsToAdditionalPaidInCapitalObligationToIssueCommonStockSharesForLicense
2772000
CY2020 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
177000
CY2020 grph Vesting Of Early Exercised Stock Options
VestingOfEarlyExercisedStockOptions
9000
CY2020 grph Net Income Loss And Comprehensive Income Loss
NetIncomeLossAndComprehensiveIncomeLoss
-68373000
CY2020Q4 us-gaap Stockholders Equity
StockholdersEquity
-65408000
CY2021 us-gaap Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
42000
CY2021 us-gaap Stock Issued During Period Value Employee Stock Purchase Plan
StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
306000
CY2021 grph Vesting Of Early Exercised Stock Options
VestingOfEarlyExercisedStockOptions
144000
CY2021 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
7871000
CY2021 grph Net Income Loss And Comprehensive Income Loss
NetIncomeLossAndComprehensiveIncomeLoss
-70760000
CY2021Q4 us-gaap Stockholders Equity
StockholdersEquity
384050000
CY2021 us-gaap Profit Loss
ProfitLoss
-70760000
CY2020 us-gaap Profit Loss
ProfitLoss
-68373000
CY2021 us-gaap Depreciation And Amortization
DepreciationAndAmortization
734000
CY2020 us-gaap Depreciation And Amortization
DepreciationAndAmortization
121000
CY2021 grph Non Cash Lease Expense
NonCashLeaseExpense
1460000
CY2020 us-gaap Interest Expense Related Party
InterestExpenseRelatedParty
40000
CY2021 us-gaap Share Based Compensation
ShareBasedCompensation
7871000
CY2020 us-gaap Share Based Compensation
ShareBasedCompensation
177000
CY2021 grph Change In Fair Value Of Redeemable Convertible Preferred Stock Tranche Liability
ChangeInFairValueOfRedeemableConvertiblePreferredStockTrancheLiability
10341000
CY2020 grph Change In Fair Value Of Redeemable Convertible Preferred Stock Tranche Liability
ChangeInFairValueOfRedeemableConvertiblePreferredStockTrancheLiability
54833000
CY2020 us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
30077000
CY2021 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
358875000
CY2021 grph Additions To Right Of Use Assets From New Operating Lease Liabilities
AdditionsToRightOfUseAssetsFromNewOperatingLeaseLiabilities
13034000
CY2021 grph Noncash Or Part Noncash Vesting Of Early Exercised Stock Options
NoncashOrPartNoncashVestingOfEarlyExercisedStockOptions
144000
CY2020 grph Noncash Or Part Noncash Vesting Of Early Exercised Stock Options
NoncashOrPartNoncashVestingOfEarlyExercisedStockOptions
9000
CY2021 us-gaap Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
3914000
CY2020 us-gaap Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
1286000
CY2021 us-gaap Proceeds From Stock Plans
ProceedsFromStockPlans
306000
CY2021 us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
417467000
CY2021 us-gaap Conversion Of Stock Amount Converted1
ConversionOfStockAmountConverted1
260532000
CY2021 us-gaap Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
1825000
CY2020 us-gaap Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
594000
CY2021 us-gaap Increase Decrease In Employee Related Liabilities
IncreaseDecreaseInEmployeeRelatedLiabilities
2223000
CY2020 us-gaap Increase Decrease In Employee Related Liabilities
IncreaseDecreaseInEmployeeRelatedLiabilities
466000
CY2021 grph Increase Decrease In Accrued Research Costs
IncreaseDecreaseInAccruedResearchCosts
-1131000
CY2020 grph Increase Decrease In Accrued Research Costs
IncreaseDecreaseInAccruedResearchCosts
1764000
CY2021 grph Increase Decrease In Accrued Expenses And Other Current Liabilities And Other Liabilities
IncreaseDecreaseInAccruedExpensesAndOtherCurrentLiabilitiesAndOtherLiabilities
257000
CY2020 grph Increase Decrease In Accrued Expenses And Other Current Liabilities And Other Liabilities
IncreaseDecreaseInAccruedExpensesAndOtherCurrentLiabilitiesAndOtherLiabilities
171000
CY2021 us-gaap Increase Decrease In Operating Lease Liability
IncreaseDecreaseInOperatingLeaseLiability
-1758000
CY2021 us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
-52852000
CY2020 us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
-8721000
CY2021 us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
5740000
CY2020 us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
1545000
CY2021 us-gaap Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
-5740000
CY2020 us-gaap Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
-1545000
CY2021 us-gaap Proceeds From Issuance Of Redeemable Convertible Preferred Stock
ProceedsFromIssuanceOfRedeemableConvertiblePreferredStock
165521000
CY2020 us-gaap Proceeds From Issuance Of Redeemable Convertible Preferred Stock
ProceedsFromIssuanceOfRedeemableConvertiblePreferredStock
24816000
CY2021 us-gaap Proceeds From Issuance Initial Public Offering
ProceedsFromIssuanceInitialPublicOffering
251323000
CY2020 us-gaap Proceeds From Related Party Debt
ProceedsFromRelatedPartyDebt
5000000
CY2021 us-gaap Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
28000
CY2021 grph Proceeds From Issuance Of Common Stock Upon Early Exercises Of Stock Options
ProceedsFromIssuanceOfCommonStockUponEarlyExercisesOfStockOptions
289000
CY2020 grph Proceeds From Issuance Of Common Stock Upon Early Exercises Of Stock Options
ProceedsFromIssuanceOfCommonStockUponEarlyExercisesOfStockOptions
261000
CY2020 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
19811000
CY2020Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
19817000
CY2019Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
6000
CY2021Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
378692000
CY2020Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
19817000
CY2021Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
376976000
CY2020Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
19782000
CY2021Q4 us-gaap Restricted Cash Current
RestrictedCashCurrent
1716000
CY2020Q4 us-gaap Restricted Cash Current
RestrictedCashCurrent
35000
CY2021Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
378692000
CY2020Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
19817000
CY2020 grph Redeemable Convertible Preferred Stock Shares Issued Upon Conversion Of Outstanding Related Party Convertible Note And Accrued Interest
RedeemableConvertiblePreferredStockSharesIssuedUponConversionOfOutstandingRelatedPartyConvertibleNoteAndAccruedInterest
5020000
CY2020 grph Noncash Or Part Noncash Related Party Convertible Note And Accrued Interest Cancellation
NoncashOrPartNoncashRelatedPartyConvertibleNoteAndAccruedInterestCancellation
-2225000
CY2021 grph Purchases Of Property And Equipment Included In Accounts Payable
PurchasesOfPropertyAndEquipmentIncludedInAccountsPayable
-75000
CY2020 grph Purchases Of Property And Equipment Included In Accounts Payable
PurchasesOfPropertyAndEquipmentIncludedInAccountsPayable
-35000
CY2021 grph Settlement Of Redeemable Convertible Preferred Stock Tranche Liability
SettlementOfRedeemableConvertiblePreferredStockTrancheLiability
-39403000
CY2020 grph Settlement Of Redeemable Convertible Preferred Stock Tranche Liability
SettlementOfRedeemableConvertiblePreferredStockTrancheLiability
-29100000
CY2021 grph Repurchase Of Unvested Early Exercised Shares Included In Accounts Payable
RepurchaseOfUnvestedEarlyExercisedSharesIncludedInAccountsPayable
42000
CY2021 grph Proceeds From Issuance Of Common Stock Upon Exercise Of Stock Options Included In Accounts Receivable
ProceedsFromIssuanceOfCommonStockUponExerciseOfStockOptionsIncludedInAccountsReceivable
14000
CY2021 grph Initial Public Offering Closed Date
InitialPublicOfferingClosedDate
2021-06-29
CY2021 us-gaap Net Income Loss
NetIncomeLoss
-70800000
CY2021 us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
-52900000
CY2021Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
-141400000
CY2021Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
378700000
CY2021 us-gaap Prior Period Reclassification Adjustment Description
PriorPeriodReclassificationAdjustmentDescription
<p style="text-align:justify;margin-bottom:0pt;margin-top:6pt;text-indent:0%;font-weight:bold;font-style:italic;font-size:10pt;font-family:Times New Roman;text-transform:none;font-variant: normal;">Presentation Reclassification</p> <p style="text-align:justify;margin-bottom:0pt;margin-top:6pt;text-indent:3.4%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Certain amounts in accrued expenses reported in the Company's prior year financial statements have been reclassified as accrued research costs to conform to the current year presentation. These reclassifications had no net effect on the net loss or net cash flows as previously reported.</p>
CY2021 us-gaap Use Of Estimates
UseOfEstimates
<p style="text-align:justify;margin-bottom:0pt;margin-top:6pt;text-indent:0%;font-weight:bold;font-style:italic;font-size:10pt;font-family:Times New Roman;text-transform:none;font-variant: normal;">Use of Estimates </p> <p style="text-align:justify;margin-bottom:0pt;margin-top:6pt;text-indent:3.4%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">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, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of expenses during the reporting period. On an ongoing basis, the Company evaluates estimates and assumptions, including but are not limited to those related to the fair value of a derivative redeemable convertible preferred stock tranche liabilities, the fair value of redeemable convertible preferred stock and common stock, stock-based compensation expense, accruals for research and development costs, the present value of lease payments of our leases on the respective lease commencement dates, the valuation of deferred tax assets, and uncertain income tax positions. Management bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ materially from those estimates. </p>
CY2021 us-gaap Concentration Risk Credit Risk
ConcentrationRiskCreditRisk
<p style="text-align:justify;margin-bottom:0pt;margin-top:6pt;text-indent:0%;font-weight:bold;font-style:italic;font-size:10pt;font-family:Times New Roman;text-transform:none;font-variant: normal;">Concentration of Credit Risk </p> <p style="text-align:justify;margin-bottom:0pt;margin-top:6pt;text-indent:3.4%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Cash and cash equivalents are financial instruments that potentially subject the Company to concentrations of credit risk. Substantially all of the Company’s cash and cash equivalents are deposited in accounts with major financial institution and amounts may exceed federally insured limits. Management believes that the Company is not exposed to significant credit risk due to the financial </p> <p style="text-align:justify;margin-bottom:0pt;margin-top:6pt;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><span style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">strength of the depository institution in which the cash and cash equivalents are held. The Company has not experienced any losses on deposits of cash and cash equivalents. </span></p>
CY2021 us-gaap Number Of Operating Segments
NumberOfOperatingSegments
1
CY2021 us-gaap Number Of Reportable Segments
NumberOfReportableSegments
1
CY2020Q4 us-gaap Deferred Offering Costs
DeferredOfferingCosts
0
CY2021Q4 us-gaap Restricted Cash
RestrictedCash
1716000
CY2020Q4 us-gaap Restricted Cash
RestrictedCash
35000
CY2021Q4 us-gaap Deferred Offering Costs
DeferredOfferingCosts
0
CY2021 us-gaap Impairment Of Long Lived Assets Held For Use
ImpairmentOfLongLivedAssetsHeldForUse
0
CY2020 us-gaap Impairment Of Long Lived Assets Held For Use
ImpairmentOfLongLivedAssetsHeldForUse
0
CY2021 grph Research And Development Credits To Offset Payroll Tax Expenses
ResearchAndDevelopmentCreditsToOffsetPayrollTaxExpenses
500000
CY2021 grph Research And Development Credit Generated Against Employer Portion Payroll Tax
ResearchAndDevelopmentCreditGeneratedAgainstEmployerPortionPayrollTax
0.3
CY2020 us-gaap Depreciation
Depreciation
100000
CY2020 grph Fair Value Measurement Liability Transfers Within Hierarchy Net
FairValueMeasurementLiabilityTransfersWithinHierarchyNet
0
CY2021 grph Fair Value Measurement Liability Transfers Within Hierarchy Net
FairValueMeasurementLiabilityTransfersWithinHierarchyNet
0
CY2021Q4 us-gaap Supplies
Supplies
1834000
CY2020Q4 us-gaap Supplies
Supplies
956000
CY2021Q4 us-gaap Prepaid Insurance
PrepaidInsurance
1543000
CY2020Q4 us-gaap Prepaid Insurance
PrepaidInsurance
13000
CY2021Q4 us-gaap Other Prepaid Expense Current
OtherPrepaidExpenseCurrent
1383000
CY2020Q4 us-gaap Other Prepaid Expense Current
OtherPrepaidExpenseCurrent
317000
CY2021Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
4760000
CY2020Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
1286000
CY2021Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
7362000
CY2020Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
1582000
CY2021Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
855000
CY2020Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
121000
CY2021Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
6507000
CY2020Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
1461000
CY2021 us-gaap Depreciation
Depreciation
700000
CY2021Q4 us-gaap Accrued Professional Fees Current
AccruedProfessionalFeesCurrent
186000
CY2020Q4 us-gaap Accrued Professional Fees Current
AccruedProfessionalFeesCurrent
55000
CY2021Q4 grph Accrued Early Exercise Liability
AccruedEarlyExerciseLiability
337000
CY2021Q4 us-gaap Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
363000
CY2020Q4 us-gaap Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
71000
CY2021Q4 grph Accrued Expenses And Other Current Liabilities
AccruedExpensesAndOtherCurrentLiabilities
886000
CY2020Q4 grph Accrued Expenses And Other Current Liabilities
AccruedExpensesAndOtherCurrentLiabilities
126000
CY2021Q4 grph Accrued Termination And Cancellation Charges
AccruedTerminationAndCancellationCharges
0
CY2020Q4 grph Accrued Termination And Cancellation Charges
AccruedTerminationAndCancellationCharges
0
CY2021 grph Royalty Payment Due
RoyaltyPaymentDue
0
CY2020 grph Royalty Payment Due
RoyaltyPaymentDue
0
CY2021 us-gaap Lessee Operating Lease Option To Extend
LesseeOperatingLeaseOptionToExtend
The original term of the lease was from May 11, 2020 to June 30, 2021 with an option to renew. In March 2021, the Company entered into an amendment to the lease agreement and extended the term of the lease to September 30, 2021.
CY2020Q2 grph Operating Lease Commencement Date
OperatingLeaseCommencementDate
2020-05-11
CY2020Q2 grph Operating Lease Maturity Date
OperatingLeaseMaturityDate
2021-06-30
CY2021Q1 grph Operating Lease Maturity Date
OperatingLeaseMaturityDate
2021-09-30
CY2021 grph Operating Lease Base Rent
OperatingLeaseBaseRent
0.0
CY2020 grph Operating Lease Base Rent
OperatingLeaseBaseRent
200000
CY2021Q4 us-gaap Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
5500000
CY2021Q4 us-gaap Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
5800000
CY2021Q4 us-gaap Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
P27M
CY2021Q4 grph Lessee Operating Lease Weighted Average Incremental Borrowing Rate
LesseeOperatingLeaseWeightedAverageIncrementalBorrowingRate
0.084
CY2021 us-gaap Common Stock Voting Rights
CommonStockVotingRights
one vote
CY2021 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
0
CY2021Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
300000000
CY2020Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
80000000
CY2021Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.00001
CY2020Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.00001
CY2021Q4 us-gaap Lessee Operating Lease Liability Payments Due Next Twelve Months
LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
6171000
CY2021Q4 us-gaap Lessee Operating Lease Liability Payments Due Year Two
LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
4332000
CY2021Q4 us-gaap Lessee Operating Lease Liability Payments Due Year Three
LesseeOperatingLeaseLiabilityPaymentsDueYearThree
1468000
CY2021Q4 us-gaap Lessee Operating Lease Liability Payments Due Year Four
LesseeOperatingLeaseLiabilityPaymentsDueYearFour
375000
CY2021Q4 us-gaap Lessee Operating Lease Liability Payments Due
LesseeOperatingLeaseLiabilityPaymentsDue
12346000
CY2021Q4 us-gaap Lessee Operating Lease Liability Undiscounted Excess Amount
LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
1070000
CY2021Q4 us-gaap Operating Lease Liability
OperatingLeaseLiability
11276000
CY2021 us-gaap Operating Lease Expense
OperatingLeaseExpense
1900000
CY2020 us-gaap Operating Lease Expense
OperatingLeaseExpense
300000
CY2021 us-gaap Variable Lease Cost
VariableLeaseCost
200000
CY2021 us-gaap Operating Lease Payments
OperatingLeasePayments
2034000
CY2021Q2 us-gaap Convertible Preferred Stock Converted To Other Securities
ConvertiblePreferredStockConvertedToOtherSecurities
260500000
CY2020 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
0
CY2020Q4 us-gaap Common Stock Capital Shares Reserved For Future Issuance
CommonStockCapitalSharesReservedForFutureIssuance
14714687
CY2021Q4 us-gaap Common Stock Capital Shares Reserved For Future Issuance
CommonStockCapitalSharesReservedForFutureIssuance
10034853
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Description
ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription
The shares of the Company’s common stock issued to its founders for their advisory and consulting services vest monthly over four years with one year cliff from the vesting commencement date.
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1
ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
P4Y
CY2021 grph Share Based Compensation Arrangement By Share Based Payment Award Award Cliff Vesting Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardCliffVestingPeriod
P1Y
CY2020Q2 grph Aggregate Common Stock Vested
AggregateCommonStockVested
912212
CY2020Q1 us-gaap Weighted Average Number Diluted Shares Outstanding Adjustment
WeightedAverageNumberDilutedSharesOutstandingAdjustment
7273848
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
6.13
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
5000000.0
CY2020 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
2800000
CY2021 grph Stock Issued During Period Shares Stock Options Exercised And Repurchased
StockIssuedDuringPeriodSharesStockOptionsExercisedAndRepurchased
138596
CY2021Q4 grph Share Based Compensation Arrangement By Share Based Payment Award Remained Subject To Right Of Repurchase Of Early Exercised Stock Options
ShareBasedCompensationArrangementByShareBasedPaymentAwardRemainedSubjectToRightOfRepurchaseOfEarlyExercisedStockOptions
1195631
CY2020Q4 grph Share Based Compensation Arrangement By Share Based Payment Award Remained Subject To Right Of Repurchase Of Early Exercised Stock Options
ShareBasedCompensationArrangementByShareBasedPaymentAwardRemainedSubjectToRightOfRepurchaseOfEarlyExercisedStockOptions
865129
CY2021 us-gaap Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
7871000
CY2020 us-gaap Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
177000
CY2021 us-gaap Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
7871000
CY2020 us-gaap Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
177000
CY2021Q4 us-gaap Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
30500000
CY2020Q4 us-gaap Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
2900000
CY2021 us-gaap Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
P3Y3M18D
CY2020 us-gaap Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
P3Y8M12D
CY2020 us-gaap Net Income Loss
NetIncomeLoss
-68373000
CY2021 grph Weighted Average Unvested Restricted Shares And Shares Subject To Repurchase Or Cancellation
WeightedAverageUnvestedRestrictedSharesAndSharesSubjectToRepurchaseOrCancellation
6201859
CY2021 us-gaap Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
28919255
CY2020 us-gaap Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
2284087
CY2021 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-2.45
CY2020 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-29.93
CY2021 us-gaap Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
9930793000
CY2020 us-gaap Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
18652653000
CY2021 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.2100
CY2020 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.2100
CY2021 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
0.0194
CY2020 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
0.0017
CY2021 us-gaap Effective Income Tax Rate Reconciliation Other Adjustments
EffectiveIncomeTaxRateReconciliationOtherAdjustments
-0.0026
CY2020 us-gaap Effective Income Tax Rate Reconciliation Other Adjustments
EffectiveIncomeTaxRateReconciliationOtherAdjustments
-0.0013
CY2021 us-gaap Effective Income Tax Rate Reconciliation Tax Credits Research
EffectiveIncomeTaxRateReconciliationTaxCreditsResearch
-0.0101
CY2020 us-gaap Effective Income Tax Rate Reconciliation Tax Credits Research
EffectiveIncomeTaxRateReconciliationTaxCreditsResearch
0.0005
CY2020 grph Effective Income Tax Rate Reconciliation Cancellation Of Debt Income
EffectiveIncomeTaxRateReconciliationCancellationOfDebtIncome
0.0061
CY2021 grph Effective Income Tax Rate Reconciliation Tranche Liability
EffectiveIncomeTaxRateReconciliationTrancheLiability
0.0306
CY2020 grph Effective Income Tax Rate Reconciliation Tranche Liability
EffectiveIncomeTaxRateReconciliationTrancheLiability
0.1684
CY2020 grph Effective Income Tax Rate Reconciliation Interest Expense
EffectiveIncomeTaxRateReconciliationInterestExpense
-0.0001
CY2021 us-gaap Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost
EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost
-0.0096
CY2021 us-gaap Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
-0.1967
CY2020 us-gaap Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
-0.0353
CY2021 us-gaap Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
0.0000
CY2020 us-gaap Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
0.0000
CY2021Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
12006000
CY2020Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
2269000
CY2021Q4 us-gaap Deferred Tax Assets Tax Credit Carryforwards General Business
DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness
2682000
CY2020Q4 us-gaap Deferred Tax Assets Tax Credit Carryforwards General Business
DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness
81000
CY2021Q4 grph Deferred Tax Assets Leasing Arrangements
DeferredTaxAssetsLeasingArrangements
2368000
CY2021Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
784000
CY2021Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals
525000
CY2020Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals
105000
CY2021Q4 us-gaap Deferred Tax Assets Property Plant And Equipment
DeferredTaxAssetsPropertyPlantAndEquipment
396000
CY2021Q4 us-gaap Deferred Tax Assets Other
DeferredTaxAssetsOther
2000
CY2021Q4 us-gaap Deferred Tax Assets Gross
DeferredTaxAssetsGross
18763000
CY2020Q4 us-gaap Deferred Tax Assets Gross
DeferredTaxAssetsGross
2455000
CY2021Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
16332000
CY2020Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
2414000
CY2021Q4 us-gaap Deferred Tax Assets Net
DeferredTaxAssetsNet
2431000
CY2020Q4 us-gaap Deferred Tax Assets Net
DeferredTaxAssetsNet
41000
CY2020Q4 us-gaap Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
41000
CY2021Q4 us-gaap Deferred Tax Liabilities Leasing Arrangements
DeferredTaxLiabilitiesLeasingArrangements
2431000
CY2021Q4 us-gaap Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
2431000
CY2020Q4 us-gaap Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
41000
CY2021 dei Auditor Name
AuditorName
Deloitte & Touche LLP
CY2021 dei Auditor Location
AuditorLocation
San Francisco, CA
CY2021 dei Auditor Firm
AuditorFirmId
34
CY2020Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
2414000
CY2019Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
8000
CY2021 grph Valuation Allowance Increases Recorded To Income Tax Provision
ValuationAllowanceIncreasesRecordedToIncomeTaxProvision
13918000
CY2020 grph Valuation Allowance Increases Recorded To Income Tax Provision
ValuationAllowanceIncreasesRecordedToIncomeTaxProvision
2406000
CY2021Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
16332000
CY2020Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
2414000
CY2021 us-gaap Income Tax Examination Description
IncomeTaxExaminationDescription
The Company’s U.S. federal and state income tax returns are generally subject to tax examinations for the tax years from inception through December 31, 2020. There are currently no pending income tax examinations. To the extent the Company has tax attribute carryforwards, the tax years in which the attribute was generated may still be adjusted upon examination by the Internal Revenue Service and state tax authorities to the extent utilized in a future period.
CY2021 us-gaap Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
1258000
CY2021 us-gaap Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
149000
CY2021Q4 us-gaap Unrecognized Tax Benefits
UnrecognizedTaxBenefits
1407000
CY2021Q4 us-gaap Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
0
CY2020Q4 us-gaap Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
0

Files In Submission

Name View Source Status
0001564590-22-011123-index-headers.html Edgar Link pending
0001564590-22-011123-index.html Edgar Link pending
0001564590-22-011123.txt Edgar Link pending
0001564590-22-011123-xbrl.zip Edgar Link pending
FilingSummary.xml Edgar Link unprocessable
Financial_Report.xlsx Edgar Link pending
g13oylx2b2u4000001.jpg Edgar Link pending
g13oylx2b2u4000002.jpg Edgar Link pending
g13oylx2b2u4000003.jpg Edgar Link pending
g13oylx2b2u4000004.jpg Edgar Link pending
g13oylx2b2u4000005.jpg Edgar Link pending
g13oylx2b2u4000006.jpg Edgar Link pending
g13oylx2b2u4000007.jpg Edgar Link pending
g13oylx2b2u4000008.jpg Edgar Link pending
g13oylx2b2u4000009.jpg Edgar Link pending
g13oylx2b2u4000010.jpg Edgar Link pending
g13oylx2b2u4000011.jpg Edgar Link pending
g13oylx2b2u4000012.jpg Edgar Link pending
g13oylx2b2u4000013.jpg Edgar Link pending
g13oylx2b2u4000014.jpg Edgar Link pending
g13oylx2b2u4000015.jpg Edgar Link pending
g13oylx2b2u4000016.jpg Edgar Link pending
g13oylx2b2u4000017.jpg Edgar Link pending
g13oylx2b2u4000018.jpg Edgar Link pending
g13oylx2b2u4000019.jpg Edgar Link pending
g13oylx2b2u4000020.jpg Edgar Link pending
g13oylx2b2u4000021.jpg Edgar Link pending
g13oylx2b2u4000022.jpg Edgar Link pending
g13oylx2b2u4000023.jpg Edgar Link pending
grph-10k_20211231.htm Edgar Link pending
grph-10k_20211231_htm.xml Edgar Link completed
grph-20211231.xsd Edgar Link pending
grph-20211231_cal.xml Edgar Link unprocessable
grph-20211231_def.xml Edgar Link unprocessable
grph-20211231_lab.xml Edgar Link unprocessable
grph-20211231_pre.xml Edgar Link unprocessable
grph-ex1023_434.htm Edgar Link pending
grph-ex211_289.htm Edgar Link pending
grph-ex231_1249.htm Edgar Link pending
grph-ex311_1060.htm Edgar Link pending
grph-ex312_1059.htm Edgar Link pending
grph-ex321_1061.htm Edgar Link pending
grph-ex322_1062.htm Edgar Link pending
grph-ex43_183.htm 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
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