Jasper Therapeutics (JSPR) 10-Q 9 Nov 23 2023 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2023	Oct. 31, 2023
Document Information Line Items
Entity Registrant Name	JASPER THERAPEUTICS, INC.
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		111,575,261
Amendment Flag	false
Entity Central Index Key	0001788028
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Document Period End Date	Sep. 30, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Shell Company	false
Entity Ex Transition Period	false
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-39138
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	84-2984849
Entity Address, Address Line One	2200 Bridge Pkwy
Entity Address, Address Line Two	Suite #102
Entity Address, City or Town	Redwood City
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94065
City Area Code	(650)
Local Phone Number	549-1400
Entity Interactive Data Current	Yes
Voting Common Stock, par value $0.0001 per share
Document Information Line Items
Trading Symbol	JSPR
Title of 12(b) Security	Voting Common Stock, par value $0.0001 per share
Security Exchange Name	NASDAQ
Redeemable Warrants, each whole warrant exercisable for one share of Voting Common Stock at an exercise price of $11.50
Document Information Line Items
Trading Symbol	JSPRW
Title of 12(b) Security	Redeemable Warrants, each whole warrant exercisable for one share of Voting Common Stock at an exercise price of $11.50
Security Exchange Name	NASDAQ

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 103,867	$ 38,250
Other receivables		663
Prepaid expenses and other current assets	1,351	2,818
Total current assets	105,218	41,731
Property and equipment, net	2,780	3,568
Operating lease right-of-use assets	1,579	1,886
Restricted cash	417	417
Other non-current assets	411	759
Total assets	110,405	48,361
Current liabilities:
Accounts payable	3,256	1,768
Current portion of operating lease liabilities	945	865
Current portion of earnout liability	28
Accrued expenses and other current liabilities	7,677	4,432
Total current liabilities	11,906	7,065
Non-current portion of operating lease liabilities	2,069	2,786
Common stock warrant liability		150
Non-current portion of earnout liability		18
Other non-current liabilities	2,297	2,353
Total liabilities	16,272	12,372
Commitments and contingencies (Note 8)
Stockholders’ equity
Preferred stock: $0.0001 par value — 10,000,000 shares authorized at September 30, 2023 and December 31, 2022; none issued and outstanding at September 30, 2023 and December 31, 2022
Common stock: $0.0001 par value — 492,000,000 shares authorized at September 30, 2023 and December 31, 2022; 110,850,413 and 38,045,677 shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively	11	4
Additional paid-in capital	247,141	141,120
Accumulated deficit	(153,019)	(105,135)
Total stockholders’ equity	94,133	35,989
Total liabilities and stockholders’ equity	$ 110,405	$ 48,361

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) - $ / shares	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Preferred stock, par value (in Dollars per share)	$ 0.0001	$ 0.0001
Preferred stock shares authorized	10,000,000	10,000,000
Preferred stock shares issued
Preferred stock shares outstanding
Common stock, par value (in Dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized	492,000,000	492,000,000
Common stock, shares issued	110,850,413	38,045,677
Common stock, shares outstanding	110,850,413	38,045,677

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Operating expenses
Research and development	$ 14,848	$ 9,022	$ 37,950	$ 25,345
General and administrative	4,514	3,686	13,186	12,104
Total operating expenses	19,362	12,708	51,136	37,449
Loss from operations	(19,362)	(12,708)	(51,136)	(37,449)
Interest income	1,433	259	3,965	353
Change in fair value of earnout liability	334	422	(10)	5,640
Change in fair value of common stock warrant liability		155	(575)	7,050
Other income (expense), net	51	9	(128)	(68)
Total other income, net	1,818	845	3,252	12,975
Net loss and comprehensive loss	$ (17,544)	$ (11,863)	$ (47,884)	$ (24,474)
Net loss per share attributable to common stockholders, basic (in Dollars per share)	$ (0.16)	$ (0.32)	$ (0.47)	$ (0.67)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in Shares)	109,720,741	36,565,650	102,351,140	36,425,000

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) (Parentheticals) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Net loss per share attributable to common stockholders, diluted	$ (0.16)	$ (0.32)	$ (0.47)	$ (0.67)
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted	109,720,741	36,565,650	102,351,140	36,425,000

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Stockholders’ Equity (Unaudited) - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Total
Balance at Dec. 31, 2021	$ 4	$ 136,964	$ (67,450)	$ 69,518
Balance (in Shares) at Dec. 31, 2021	37,855,114
Issuance of common stock upon exercise of stock options		13		13
Issuance of common stock upon exercise of stock options (in Shares)	19,073
Issuance of common stock upon exercise of common stock warrants
Issuance of common stock upon exercise of common stock warrants (in Shares)	20
Vesting of founders’ restricted stock		3		3
Stock-based compensation expense		778		778
Net loss			(2,207)	(2,207)
Balance at Mar. 31, 2022	$ 4	137,758	(69,657)	68,105
Balance (in Shares) at Mar. 31, 2022	37,874,207
Balance at Dec. 31, 2021	$ 4	136,964	(67,450)	69,518
Balance (in Shares) at Dec. 31, 2021	37,855,114
Net loss				(24,474)
Balance at Sep. 30, 2022	$ 4	139,485	(91,924)	47,565
Balance (in Shares) at Sep. 30, 2022	37,984,368
Balance at Mar. 31, 2022	$ 4	137,758	(69,657)	68,105
Balance (in Shares) at Mar. 31, 2022	37,874,207
Issuance of common stock upon exercise of stock options		13		13
Issuance of common stock upon exercise of stock options (in Shares)	17,138
Settlement of restricted stock units
Settlement of restricted stock units (in Shares)	89,972
Vesting of founders’ restricted stock		2		2
Stock-based compensation expense		1,065		1,065
Net loss			(10,404)	(10,404)
Balance at Jun. 30, 2022	$ 4	138,838	(80,061)	58,781
Balance (in Shares) at Jun. 30, 2022	37,981,317
Issuance of common stock upon exercise of stock options		1		1
Issuance of common stock upon exercise of stock options (in Shares)	1,176
Settlement of restricted stock units
Settlement of restricted stock units (in Shares)	1,875
Vesting of founders’ restricted stock		2		2
Stock-based compensation expense		644		644
Net loss			(11,863)	(11,863)
Balance at Sep. 30, 2022	$ 4	139,485	(91,924)	47,565
Balance (in Shares) at Sep. 30, 2022	37,984,368
Balance at Dec. 31, 2022	$ 4	141,120	(105,135)	$ 35,989
Balance (in Shares) at Dec. 31, 2022	38,045,677			38,045,677
Issuance of common stock upon exercise of stock options		32		$ 32
Issuance of common stock upon exercise of stock options (in Shares)	44,413
Issuance of common stock through underwritten offering, net of discounts and commissions and issuance costs of $6.6 million	$ 7	96,923		96,930
Issuance of common stock through underwritten offering, net of discounts and commissions and issuance costs of $6.6 million (in Shares)	69,000,000
Issuance of common stock through ATM offering, net of commissions and offering costs of $0.1 million		4,509		4,509
Issuance of common stock through ATM offering, net of commissions and offering costs of $0.1 million (in Shares)	2,337,496
Reclassification of common stock warrants from liability to equity (Note 7)		725		725
Settlement of restricted stock units
Settlement of restricted stock units (in Shares)	625
Vesting of founders’ restricted stock		6		6
Stock-based compensation expense		1,267		1,267
Net loss			(14,260)	(14,260)
Balance at Mar. 31, 2023	$ 11	244,582	(119,395)	125,198
Balance (in Shares) at Mar. 31, 2023	109,428,211
Balance at Dec. 31, 2022	$ 4	141,120	(105,135)	$ 35,989
Balance (in Shares) at Dec. 31, 2022	38,045,677			38,045,677
Reclassification of common stock warrants from liability to equity (Note 7)				$ 250,000
Net loss				(47,884)
Balance at Sep. 30, 2023	$ 11	247,141	(153,019)	$ 94,133
Balance (in Shares) at Sep. 30, 2023	110,850,413			110,850,413
Balance at Mar. 31, 2023	$ 11	244,582	(119,395)	$ 125,198
Balance (in Shares) at Mar. 31, 2023	109,428,211
Issuance of common stock upon exercise of stock options		320		320
Issuance of common stock upon exercise of stock options (in Shares)	451,403
Issuance of common stock pursuant to Employee Stock Purchase Plan		36		36
Issuance of common stock pursuant to Employee Stock Purchase Plan (in Shares)	65,001
Shares withheld for taxes		(661)		(661)
Shares withheld for taxes (in Shares)	(452,933)
Settlement of restricted stock units
Settlement of restricted stock units (in Shares)	1,308,731
Vesting of founders’ restricted stock		1		1
Stock-based compensation expense		1,391		1,391
Net loss			(16,080)	(16,080)
Balance at Jun. 30, 2023	$ 11	245,669	(135,475)	110,205
Balance (in Shares) at Jun. 30, 2023	110,800,413
Issuance of common stock upon exercise of stock options		36		36
Issuance of common stock upon exercise of stock options (in Shares)	50,000
Reversal of excess accrued issuance costs		40		40
Vesting of founders’ restricted stock		1		1
Stock-based compensation expense		1,395		1,395
Net loss			(17,544)	(17,544)
Balance at Sep. 30, 2023	$ 11	$ 247,141	$ (153,019)	$ 94,133
Balance (in Shares) at Sep. 30, 2023	110,850,413			110,850,413

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Stockholders’ Equity (Unaudited) (Parentheticals)	3 Months Ended
	Mar. 31, 2023 USD ($)
Statement of Stockholders' Equity [Abstract]
Issuance of common stock through underwritten offering, net of discounts and commissions and issuance costs	$ 6,600
Issuance of common stock through ATM offering, net of commissions and offering costs	$ 100

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities
Net loss	$ (47,884)	$ (24,474)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization expense	825	702
Non-cash lease expense	307	241
Stock-based compensation expense	4,053	2,487
Change in fair value of common stock warrant liability	575	(7,050)
Change in fair value of earnout liability	10	(5,640)
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	1,467	1,669
Other receivables	663
Other non-current assets	348	102
Accounts payable	1,488	(802)
Accrued expenses and other current liabilities	3,245	(132)
Operating lease liability	(637)	(386)
Other non-current liabilities	(48)	71
Net cash used in operating activities	(35,588)	(33,212)
Cash flows used in investing activities
Purchases of property and equipment	(37)	(494)
Net cash used in investing activities	(37)	(494)
Cash flows from financing activities
Proceeds from issuance of common stock through ATM and underwritten offerings, net	101,479
Proceeds from issuance of common stock pursuant to Employee Stock Purchase Plan	36
Taxes withheld and paid related to net share settlement of equity awards	(661)
Proceeds from exercise of common stock options	388	27
Net cash provided by financing activities	101,242	27
Net increase (decrease) in cash, cash equivalents and restricted cash	65,617	(33,679)
Cash, cash equivalents and restricted cash at beginning of the period	38,667	85,046
Cash, cash equivalents and restricted cash at end of the period	104,284	51,367
Supplemental and non-cash items reconciliations:
Reclassification of common stock warrant liability to equity	725
Vesting of founders’ restricted stock	8	7
Right-of-use asset obtained in exchange for lease liabilities		1,074
Non-cash leasehold improvements		$ 281

Organization and Description of

Organization and Description of Business	9 Months Ended
	Sep. 30, 2023
Organization and Description of Business [Abstract]
ORGANIZATION AND DESCRIPTION OF BUSINESS	NOTE 1. ORGANIZATION AND DESCRIPTION OF BUSINESS Description of Business Jasper Therapeutics, Inc. and its consolidated subsidiary (collectively, “Jasper” or the “Company”), is a clinical-stage biotechnology company focused on developing therapeutics targeting mast cell driven diseases such as Chronic Spontaneous Urticaria, Chronic Inducible Urticaria, as well as diseases where targeting hematopoietic stem cells can provide benefits, such as Lower to Intermediate Risk Myelodysplastic Syndrome, and novel stem cell transplant conditioning regimens. The Company is headquartered in Redwood City, California. On September 24, 2021 (the “Closing Date”), the Company consummated the previously announced business combination (the “Business Combination” or “Reverse Recapitalization” for accounting purposes) pursuant to the terms of the Business Combination Agreement, dated as of May 5, 2021 (the “BCA”), by and among Amplitude Healthcare Acquisition Corporation (“AMHC”), Ample Merger Sub, Inc., a then-wholly-owned subsidiary of AMHC (“Merger Sub”), and the pre-Business Combination Jasper Therapeutics, Inc. (now named Jasper Tx Corp.) (“Old Jasper”). Pursuant to the terms of the BCA, on the Closing Date, (i) Merger Sub merged with and into Old Jasper, with Old Jasper as the surviving company in the Business Combination, and, after giving effect to such Business Combination, Old Jasper became a wholly owned subsidiary of AMHC and changed its name to “Jasper Tx Corp.”, and (ii) AMHC changed its name to “Jasper Therapeutics, Inc.”. Liquidity and Going Concern The Company has incurred significant losses and negative cash flows from operations since its inception. During the three and nine months ended September 30, 2023, the Company incurred net losses of $17.5 million and $47.9 million, respectively. During the three and nine months ended September 30, 2022, the Company incurred net losses of $11.9 million and $24.5 million, respectively. During the nine months ended September 30, 2023 and 2022, the Company had negative operating cash flows of $35.6 million and $33.2 million, respectively. As of September 30, 2023 and December 31, 2022, the Company had an accumulated deficit of $153.0 million and $105.1 million, respectively. The Company expects to continue to incur substantial losses, and its ability to achieve and sustain profitability will depend on the successful development, approval, and commercialization of product candidates and on the achievement of sufficient revenues to support the Company’s cost structure. As of September 30, 2023, the Company had cash and cash equivalents of $103.9 million. The Company’s management expects that the existing cash and cash equivalents will be sufficient to fund the Company’s operating plans for at least twelve months from the issuance date of these condensed consolidated financial statements. The Company will need to raise additional financing to continue its products’ development for the foreseeable future, and expects to continue doing so until it becomes profitable. The Company’s management plans to monitor expenses and raise additional capital through a combination of public and private equity, debt financings, strategic alliances, and licensing arrangements. The Company’s ability to access capital when needed is not assured and, if capital is not available to the Company when, and in the amounts needed, the Company may be required to significantly curtail, delay or discontinue one or more of its research or development programs or the commercialization of any product candidate, or be unable to expand its operations or otherwise capitalize on the Company’s business opportunities, as desired, which could materially harm the Company’s business, financial condition and results of operations.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2023
Summary of Significant Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	NOTE 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation The condensed consolidated financial statements and accompanying notes are unaudited and have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and applicable rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”) regarding interim financial reporting. The accompanying condensed financial statements are consolidated and include the accounts of Jasper Therapeutics, Inc. and its wholly-owned subsidiary, Jasper Tx Corp. All intercompany transactions and balances have been eliminated upon consolidation. Certain information and footnote disclosures normally included in the financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. Accordingly, these condensed consolidated financial statements should be read in conjunction with the audited financial statements and the related notes thereto for the year ended December 31, 2022 included in the Company’s Annual Report on the Form 10-K filed with the SEC on March 8, 2023. The information as of December 31, 2022, included in the condensed consolidated balance sheets was derived from the Company’s audited financial statements. These unaudited interim condensed consolidated financial statements have been prepared on the same basis as the Company’s annual consolidated financial statements and, in the opinion of management, reflect all adjustments, which include only normal recurring adjustments necessary for a fair statement of the Company’s consolidated financial statements. The results of operations for the three and nine months ended September 30, 2023 are not necessarily indicative of the results that may be expected for the year ending December 31, 2023 or for any other interim period or for any other future year. Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates, assumptions and judgements that affect the reported amounts of assets and liabilities and disclosure of contingent liabilities as of the date of the financial statements and the reported amounts of income and expenses during the reporting periods. Significant estimates and assumptions made in the accompanying condensed consolidated financial statements include, but are not limited to, the determination of the accrued research and development expenses, valuation of earnout liability and the measurement of stock-based compensation expense. The Company evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors and adjusts those estimates and assumptions when facts and circumstances dictate. Actual results could materially differ from those estimates. Cash, Cash Equivalents, and Restricted Cash The following table provides a reconciliation of cash and restricted cash reported within the condensed consolidated balance sheets that sum to the total amount shown in the condensed consolidated statements of cash flows (in thousands): September 30, December 31, 2023 2022 Cash and cash equivalents $ 103,867 $ 38,250 Restricted cash 417 417 Total cash, cash equivalents and restricted cash $ 104,284 $ 38,667 Cash and cash equivalents consist of cash held in operating accounts and investments in money market funds with an original maturity of three months or less at the time of purchase. Restricted cash relates to the letter of credit secured in conjunction with the operating lease (Note 8). Cash balances are held at financial institutions and account balances may exceed federally insured limits. To date, the Company has not experienced any losses on its cash, cash equivalents and marketable securities’ balances and periodically evaluates the creditworthiness of its financial institutions. On March 10, 2023, Silicon Valley Bank (“SVB”) was closed by the California Department of Financial Protection and Innovation, which appointed the Federal Deposit Insurance Corporation (“FDIC”) as receiver. On March 12, 2023 the FDIC transferred all deposits, both insured and uninsured, and substantially all assets from the former SVB to a newly created, full-service FDIC-operated “bridge bank”, Silicon Valley Bridge Bank, N.A. (“SVBB”) and the FDIC, Treasury Department, and Federal Reserve announced that all deposits will be fully protected, whether or not they had been insured by the FDIC. On March 27, 2023, First-Citizens Bank & Trust Company assumed all of SVBB’s customer deposits and certain other liabilities and acquired substantially all of SVBB’s loans and certain other assets from the FDIC. As of September 30, 2023, the Company had $1.0 million of cash and cash equivalents and $3.4 million of marketable securities at SVBB. As of the date of the issuance of these condensed consolidated financial statements, the Company has full access to and control over all of its cash, cash equivalents and marketable securities. Segment Reporting The Company has determined it operates as a single operating and reportable segment. The Company’s chief operating decision maker, its Chief Executive Officer, manages the Company’s operations on a consolidated basis for the purposes of allocating resources. All long-lived assets are located in the United States. New Accounting Pronouncements Not Yet Adopted In June 2022, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sales Restrictions, which (1) clarifies the guidance in Topic 820 on the fair value measurement of an equity security that is subject to contractual restrictions that prohibit the sale of an equity security and (2) requires specific disclosures related to such an equity security. This guidance is effective for fiscal years beginning after December 15, 2023, and interim periods within those fiscal years. The Company does not expect the adoption of this ASU to have a significant impact on the Company’s consolidated financial statements. In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting, which provides optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships and other transactions affected by reference rate reform if certain criteria are met. The amendments in this ASU were effective for all entities as of March 12, 2020 through December 31, 2022; however, in December 2022, the FASB issued ASU No. 2022-06, Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848, which extended the sunset date from December 31, 2022 to December 31, 2024. An entity may elect to apply the amendments for contract modifications by Topic or Industry Subtopic as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020, or prospectively from the date that the financial statements are available to be issued. Once elected for a Topic or an Industry Subtopic, the amendments must be applied prospectively for all eligible contract modifications for that Topic or Industry Subtopic. The Company is currently evaluating the effect of ASU No. 2020-04 on its consolidated financial statements.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2023
Fair Value Measurements [Abstract]
FAIR VALUE MEASUREMENTS	NOTE 3. FAIR VALUE MEASUREMENTS The Company measures certain financial assets and liabilities at fair value on a recurring basis. Fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or a liability. A three-tier fair value hierarchy is established as a basis for considering such assumptions and for inputs used in the valuation methodologies in measuring fair value: ● Level 1 – Inputs are unadjusted, quoted prices in active markets for identical assets or liabilities at the measurement date; ● Level 2 – Inputs are observable, unadjusted quoted prices in active markets for similar assets or liabilities, unadjusted quoted prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the related assets or liabilities; and ● Level 3 – Unobservable inputs that are significant to the measurement of the fair value of the assets or liabilities that are supported by little or no market data. In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible as well as considers counterparty credit risk in its assessment of fair value. Assets and liabilities measured at fair value are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires management to make judgments and consider factors specific to the asset or liability. The fair value of Level 1 securities is determined using quoted prices in active markets for identical assets. As of December 31, 2022, Level 1 securities consisted of highly liquid money market funds and common stock warrant liability. In addition, restricted cash collateralized by money market funds is a financial asset measured at fair value and is a Level 1 financial instrument under the fair value hierarchy. As of September 30, 2023, Level 1 securities included money market funds. As a result of the warrant liability being reclassified to equity during the nine months ended September 30, 2023, the common stock warrants are no longer securities that are measured at fair value at period end (see Note 7). Financial assets and liabilities are considered Level 2 when their fair values are determined using inputs that are observable in the market or can be derived principally from or corroborated by observable market data, such as pricing for similar securities, recently executed transactions, cash flow models with yield curves, and benchmark securities. In addition, Level 2 financial instruments are valued using comparisons to like-kind financial instruments and models that use readily observable market data as their basis. The Company had no financial instruments classified at Level 2 as of September 30, 2023 and December 31, 2022. Financial assets and liabilities are considered Level 3 when their fair values are determined using pricing models, discounted cash flow methodologies, or similar techniques and at least one significant model assumption or input is unobservable. Level 3 liabilities that are measured at fair value on a recurring basis included the earnout liability, which was recognized in connection with the Business Combination in September 2021 (Note 7). During the periods presented, the Company has not changed the manner in which it values liabilities that are measured at estimated fair value using Level 3 inputs. There were no transfers within the hierarchy during the three and nine months ended September 30, 2023 and 2022. The following tables set forth the fair value of the Company’s financial assets and liabilities measured on a recurring basis by level within the fair value hierarchy (in thousands): September 30, 2023 Level 1 Level 2 Level 3 Total Financial assets Money market funds $ 102,867 $ — $ — $ 102,867 Total fair value of assets $ 102,867 $ — $ — $ 102,867 Financial liabilities Earnout liability $ — $ — $ 28 $ 28 Total fair value of financial liabilities $ — $ — $ 28 $ 28 December 31, 2022 Level 1 Level 2 Level 3 Total Financial assets Money market funds $ 37,250 $ — $ — $ 37,250 Total fair value of assets $ 37,250 $ — $ — $ 37,250 Financial liabilities Common stock warrant liability $ 150 $ — $ — $ 150 Earnout liability — — 18 18 Total fair value of financial liabilities $ 150 $ — $ 18 $ 168 The following table sets forth a summary of the changes in the fair value of the Company’s Level 3 financial liabilities (in thousands): Earnout Fair Value as of December 31, 2022 $ 18 Change in the fair value included in other expense 764 Fair Value as of March 31, 2023 782 Change in the fair value included in other income (420 ) Fair Value as of June 30, 2023 362 Change in the fair value included in other income (334 ) Fair Value as of September 30, 2023 $ 28 Fair Value as of December 31, 2021 $ 5,743 Change in the fair value included in other income (4,593 ) Fair Value as of March 31, 2022 1,150 Change in the fair value included in other income (625 ) Fair Value as of June 30, 2022 525 Change in the fair value included in other income (422 ) Fair Value as of September 30, 2022 $ 103 The estimated fair value of the earnout liability is determined using a Monte Carlo simulation model, which uses a distribution of potential outcomes on a monthly basis over the earnout period prioritizing the most reliable information available. The assumptions utilized in the calculation are based on the achievement of certain stock price milestones, including the Company’s current common stock price, expected volatility, risk-free rate and expected term. The estimates of fair value are uncertain and changes in any of the estimated inputs used as of the date of this report could have resulted in significant adjustments to the fair value. The following table presents quantitative information about the inputs and valuation methodologies used for the Company’s fair value measurement classified in Level 3 of the fair value hierarchy at September 30, 2023: Fair value Valuation Significant Earnout liability $ 28 Monte Carlo Simulation Common stock price $ 0.70 Expected term (in years) 0.98 Expected volatility 128.0 % Risk-free interest rate 5.32 % The following table presents quantitative information about the inputs and valuation methodologies used for the Company’s fair value measurement classified in Level 3 of the fair value hierarchy at December 31, 2022: Fair value Valuation Significant Earnout liability $ 18 Monte Carlo Simulation Common stock price $ 0.48 Expected term (in years) 1.73 Expected volatility 105.0 % Risk-free interest rate 4.40 %

Condensed Consolidated Balanc_3

Condensed Consolidated Balance Sheet Components	9 Months Ended
	Sep. 30, 2023
Condensed Consolidated Balance Sheet Components [Abstract]
CONDENSED CONSOLIDATED BALANCE SHEET COMPONENTS	NOTE 4. CONDENSED CONSOLIDATED BALANCE SHEET COMPONENTS Prepaid expenses and other current assets The following table summarizes the details of prepaid expenses and other current assets as of the dates set forth below (in thousands): September 30, December 31, 2023 2022 Research and development prepaid expenses $ 481 $ 842 Prepaid insurance 191 1,362 Payroll tax credit receivable 250 250 Other receivables 18 118 Other prepaid expenses and current assets 411 246 Total $ 1,351 $ 2,818 Property and equipment, net The following table summarizes the details of property and equipment, net as of the dates set forth below (in thousands): September 30, December 31, 2023 2022 Leasehold improvements $ 2,477 $ 2,477 Lab equipment 1,743 1,706 Office furniture & fixtures 502 502 Computer equipment 145 145 Capitalized software 90 90 Property and equipment, gross 4,957 4,920 Less: accumulated depreciation and amortization (2,177 ) (1,352 ) Property and equipment, net $ 2,780 $ 3,568 Depreciation and amortization expense was $0.3 million for each of the three months ended September 30, 2023 and 2022, and $0.8 million and $0.7 million for the nine months ended September 30, 2023 and 2022, respectively. Accrued expenses and other current liabilities The following table summarizes the details of accrued expenses and other current liabilities as of the dates set forth below (in thousands): September 30, December 31, 2023 2022 Research and development accrued expenses $ 5,883 $ 2,651 Accrued employee and related compensation expenses 1,402 1,587 Other 392 194 Total $ 7,677 $ 4,432 Other non-current liabilities The following table summarizes the details of other non-current liabilities as of the dates set forth below (in thousands): September 30, December 31, 2023 2022 CIRM grant liability $ 2,264 $ 2,264 Restricted stock liability 1 9 Other non-current liabilities 32 80 Total $ 2,297 $ 2,353

Cirm Grant

Cirm Grant	9 Months Ended
	Sep. 30, 2023
Cirm Grant [Abstract]
CIRM GRANT	NOTE 5. CIRM GRANT In November 2020, California Institute for Regenerative Medicine (“CIRM”) awarded the Company $2.3 million in support of the research project related to a monoclonal antibody that depletes blood stem cells and enables chemotherapy-free transplants. The award was payable to the Company upon achievement of milestones over the next three years that were primarily based on patient enrollment in the Company’s clinical trials. CIRM may permanently cease disbursements if milestones are not met within four months of the scheduled completion date. Additionally, if CIRM determines, in its sole discretion, that the Company has not complied with the terms and conditions of the grant, CIRM may suspend or permanently cease disbursements. Funds received under this grant may only be used for allowable project costs specifically identified with the CIRM-funded project. Such costs can include, but are not limited to, salary for personnel, itemized supplies, consultants, and itemized clinical study costs. Under the terms of the grant, both CIRM and the Company will co-fund the research project and the amount of the Company’s co-funding requirement is predetermined as a part of the award. Under the terms of the CIRM grant, the Company is obligated to pay royalties and licensing fees based on 0.1% of net sales of CIRM-funded product candidates or CIRM-funded technology per $1.0 million of CIRM grant. As an alternative to revenue sharing, the Company has the option to convert the award to a loan. In the event the Company exercises its right to convert the award to a loan, it would be obligated to repay the loan within ten business days of making such election. Repayment amounts vary dependent on when the award is converted to a loan, ranging from 60% of the award granted to amounts received plus interest at the rate of the three-month LIBOR rate plus 25% per annum. Since the Company may be required to repay some or all of the amounts awarded by CIRM, the Company accounted for this award as a liability. Given the uncertainty in amounts due upon repayment, the Company has recorded amounts received without any discount or interest recorded, and upon determination of amounts that would become due, the Company will adjust accordingly. In the absence of explicit U.S. GAAP guidance on contributions received by business entities from government entities, the Company has applied to the CIRM grant the recognition and measurement guidance in Accounting Standards Codification Topic 958-605 by analogy. The Company has received an aggregate of $2.3 million from CIRM through September 30, 2023, of which $0.7 million was received during the nine months ended September 30, 2023. As of September 30, 2023, $50,000 is available for future distribution to the Company under the grant upon the achievement of a future milestone.

Significant Agreements

Significant Agreements	9 Months Ended
	Sep. 30, 2023
Significant Agreements [Abstract]
SIGNIFICANT AGREEMENTS	NOTE 6. SIGNIFICANT AGREEMENTS Amgen License Agreement In November 2019, the Company entered into a worldwide exclusive license agreement with Amgen, Inc. (“Amgen”) for briquilimab (formerly known as AMG-191 and JSP191) that also includes translational science and materials from The Board of Trustees of the Leland Stanford Junior University (“Stanford”) (the “Amgen License Agreement”). The Company was assigned and accepted Amgen’s rights and obligations, effective November 21, 2019, under the Investigator Sponsored Research Agreement (the “ISRA”), entered into in June 2013, between Amgen and Stanford, and the Quality Agreement between Amgen and Stanford, effective as of October 7, 2015. Under the ISRA, the Company received an option to negotiate a definitive license with Stanford for rights to certain Stanford intellectual property related to the study of briquilimab in exchange for an option exercise fee of $1.0 million, payable over a two-year period (the “Option”). The Company exercised the Option on June 2, 2020. As a result, the Company has worldwide exclusive rights to develop and commercialize briquilimab. The Amgen License Agreement terminates on a country-by-country basis on the 10th anniversary of the date on which the exploitation of the licensed products is no longer covered by a valid claim under a licensed patent in such country. On a country-by-country basis, upon the expiration of the term in each country with respect to the licensed products, the licenses to the Company by Amgen become fully paid and non-exclusive. The Company and Amgen have the right to terminate the agreement for a material breach as specified in the agreement. Stanford License Agreement In March 2021, the Company entered into an exclusive license agreement with Stanford (the “Stanford License Agreement”). In July 2023, the Company entered into an amendment to the Stanford License Agreement to modify certain milestones set forth thereunder. The Company received a worldwide, exclusive license, with a right to sublicense, for briquilimab in the field of depleting endogenous blood stem cells in patients for whom hematopoietic cell transplantation is indicated. Stanford transferred to the Company certain know-how and patents related to briquilimab (together, the “Licensed Technology”). Under the terms of this agreement, the Company will use commercially reasonable efforts to develop, manufacture, and sell licensed product and to develop markets for a licensed product. In addition, the Company will use commercially reasonable efforts to meet the milestones as specified in the agreement over the six years from execution of the Stanford License Agreement and must notify Stanford in writing as each milestone is met. The Company will pay annual license maintenance fees, beginning on the first anniversary of the effective date of the agreement and ending upon the first commercial sale of a product, method, or service in the licensed field of use, as follows: $25,000 for each first and second year, $35,000 for each third and fourth year and $50,000 at each anniversary thereafter ending upon the first commercial sale. The Company is also obligated to pay late-stage clinical development milestone payments and first commercial sales milestone payments of up to $9.0 million in total. The Company will also pay low single-digit royalties on net sales of licensed products, if approved. The Company paid a $25,000 license maintenance fee in each of March 2023 and 2022, which was recognized as research and development expense in the condensed statements of operations and comprehensive loss for the nine months ended September 30, 2023 and 2022. The Stanford License Agreement expires on a country-by-country basis on the last-to-expire valid claim of a licensed patent in such country. The Company may terminate the agreement by giving Stanford written notice at least 12 months in advance of the effective date of termination. The Company may also terminate the agreement solely with respect to any particular patent application or patent by giving Stanford written notice at least 60 days in advance of the effective date of termination. Stanford may terminate the agreement after 90 days from a written notice by Stanford, specifying a problem, including a delinquency on any report required pursuant to the agreement or any payment, missing a milestone or a material breach, unless the Company remediates the problem in that 90-day period.

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2023
Derivative Financial Instruments [Abstract]
DERIVATIVE FINANCIAL INSTRUMENTS	NOTE 7. DERIVATIVE FINANCIAL INSTRUMENTS Common Stock Warrants The warrants to purchase shares of the Company’s common stock (the “Common Stock Warrants”) assumed in the Business Combination are traded on the Nasdaq Capital Market and may only be exercised for a whole number of shares. The Common Stock Warrants became exercisable on October 24, 2021 and will expire on September 24, 2026, unless early redeemed or if the Company extends the exercise period. As long as the Company continued to have shares of non-voting common stock outstanding, the Common Stock Warrants did not meet the equity classification guidance and were accounted for as liabilities at fair value. In January, 2023, a holder converted all its 911,022 outstanding shares of non-voting common stock into shares of voting common stock and thereafter the Company no longer had any outstanding shares of non-voting common stock. As of September 30, 2023, the outstanding Common Stock Warrants for 4,999,863 shares of common stock met equity classification criteria and were reclassified to equity at the fair value of $0.7 million at the conversion date. The Company recognized a loss of zero and $0.6 million for the three and nine months ended September 30, 2023, respectively, and a gain of $0.2 million and $7.1 million for the three and nine months ended September 30, 2022, respectively, classified within change in fair value of common stock warrant liability in the condensed consolidated statements of operations and comprehensive loss. The Common Stock Warrants’ fair value was $0.2 million as of December 31, 2022. Contingent Earnout Liability Upon the closing of the Business Combination and pursuant to the Sponsor Support Agreement, dated May 5, 2021 and amended on September 24, 2021, by and among the Company, Amplitude Healthcare Holdings LLC (the “Sponsor”) and Old Jasper, the Sponsor agreed to place 1,050,000 shares of the Company’s common stock that were previously issued to the Sponsor (the “Earnout Shares”) into escrow, which will be released as follows: (a) 250,000 Earnout Shares will be released if, during the period from and after September 24, 2021 until September 24, 2024 (the “Earnout Period”), over any twenty trading days within any thirty day consecutive trading day period, the volume-weighted average price of the Company’s common stock (the “Applicable VWAP”) is greater than or equal to $11.50, (b) 500,000 Earnout Shares will be released if, during the Earnout Period, the Applicable VWAP is greater than or equal to $15.00 and (c) 300,000 Earnout Shares will be released if, during the Earnout Period, the Applicable VWAP is greater than or equal to $18.00 (the “triggering events”). The Earnout Shares placed in escrow are legally issued and outstanding shares that participate in voting and dividends. The Earnout Shares (along with related escrowed dividends, if any) will be forfeited and not released from escrow at the end of the Earnout Period unless the triggering events described above are achieved during the Earnout Period. Upon the closing of the Business Combination, the contingent obligation to release the Earnout Shares was accounted for as a liability-classified financial instrument upon their initial recognition because the triggering events that determine the number of shares required to be released from escrow include events that were not solely indexed to the common stock of the Company. The earnout liability is remeasured each reporting period with changes in fair value recognized in earnings. The estimated fair value of the earnout liability was less than $0.1 million as of each of September 30, 2023 and December 31, 2022, based on a Monte Carlo simulation model. Assumptions used in the valuations are described in Note 3. No triggering event occurred as of September 30, 2023. The Company recognized a gain of $0.3 million and a loss of less than $0.1 million for the three and nine months ended September 30, 2023, respectively, and a gain of $0.4 million and $5.6 million for the three and nine months ended September 30, 2022, respectively, classified within change in fair value of earnout liability in the condensed consolidated statements of operations and comprehensive loss.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2023
Commitments and Contingencies [Abstract]
COMMITMENTS AND CONTINGENCIES	NOTE 8. COMMITMENTS AND CONTINGENCIES Operating Leases In August 2020, the Company leased 7,781 square feet and in January 2022, the Company leased an additional 5,611 square feet of laboratory and office space in Redwood City, California. The Company’s operating lease will expire in August 2026. In March 2022, the Company entered into an agreement for 5,144 square feet of temporary office space in Redwood City, California, for use while the extra space leased in January 2022 was under construction. The Company paid $26,000 monthly for the temporary office space rent through July 2022. In conjunction with signing the lease, the Company secured a letter of credit in favor of the lessor in the amount of $0.4 million. The funds related to this letter of credit are presented as restricted cash on the Company’s condensed consolidated balance sheets. The lease agreement includes an escalation clause for increased base rent and a renewal provision allowing the Company to extend this lease for an additional 60 months at the prevailing rental rate, which the Company is not reasonably certain to exercise. In addition to base rent, the Company pays its share of operating expenses and taxes. To complete certain leasehold improvements, the lessor agreed to provide the Company a tenant improvement allowance of $1.5 million as well as an option to take an additional allowance of $0.4 million to be repaid over the lease term at an interest rate of 9% per annum, which the Company exercised. The Company recognized the full $1.9 million in leasehold improvements covered by these allowances during the 2021 and 2022 fiscal years. In accordance with the lease agreement, the lessor managed and supervised the construction of the improvements. In exchange for these services, the Company paid the lessor a fee equal to 5% of total construction costs. As of September 30, 2023 and December 31, 2022, the leasehold improvements constructed are presented under property and equipment on the Company’s condensed consolidated balance sheets and will be depreciated on a straight-line basis over the remaining lease term. In addition to the construction management and supervision fee noted above, the Company pays variable costs related to its share of operating expenses and taxes. These variable costs are recorded as lease expense as incurred and presented as operating expenses in the condensed consolidated statements of operations and comprehensive loss. The components of lease costs, which were included in the Company’s condensed statements of operations and comprehensive loss, are as follows (in thousands): Nine Months Ended 2023 2022 Lease cost Operating lease cost $ 504 $ 454 Short-term lease cost 2 129 Total lease cost $ 506 $ 583 Supplemental information related to the Company’s operating leases is as follows: Nine Months Ended 2023 2022 Cash paid for amounts included in the measurement of lease liabilities (in thousands) $ 834 $ 594 Weighted average remaining lease term (years) 2.9 3.9 Weighted average discount rate 8.00 % 8.00 % The following table summarizes a maturity analysis of the Company’s operating lease liabilities showing the aggregate lease payments as of September 30, 2023 (in thousands): Year ending December 31, Amount 2023 (remainder of the year) $ 285 2024 1,153 2025 1,187 2026 740 Total undiscounted lease payments 3,365 Less imputed interest (351 ) Total discounted lease payments 3,014 Less current portion of lease liability (945 ) Noncurrent portion of lease liability $ 2,069 Stanford Sponsored Research Agreement In September 2020, the Company entered into a sponsored research agreement with Stanford for a research program related to the treatment of Fanconi Anemia patients in Bone Marrow Failure requiring allogeneic transplant with non-sibling donors at Stanford Lucile Packard Children’s Hospital using briquilimab (the “Research Project”). Stanford will perform the Research Project and is fully responsible for costs and operations related to the Research Project. In addition, Stanford owns the entire right, title, and interest in and to all technology developed using Stanford facilities and by Stanford personnel through the performance of the Research Project under this agreement (the “Fanconi Anemia Research Project IP”). Under this agreement, Stanford granted the Company an exclusive option to license Stanford’s rights in the Fanconi Anemia Research Project IP (the “Fanconi Anemia Option”) in the field of commercialization of briquilimab. There is no license granted or other intellectual property transferred under this agreement until the Fanconi Anemia Option is exercised. As of September 30, 2023, the Company has not yet exercised the Fanconi Anemia Option. As consideration for the services performed by Stanford under this sponsored research agreement, the Company agreed to pay Stanford a total of $0.9 million over approximately three years upon the achievement of development and clinical milestones, including the U.S. Food and Drug Administration (the “FDA”) filings and patient enrollment. The first milestone in the amount of $0.3 million was achieved in 2020. The second milestone in the amount of $0.3 million was achieved in February 2022 and recognized as a research and development expense in the consolidated statements of operations and comprehensive loss for the year ended December 31, 2022. The third and final milestone in the amount of $0.3 million was achieved in July 2023 and recognized as a research and development expense in the condensed consolidated statements of operations and comprehensive loss for the three and nine months ended September 30, 2023. License Agreements In March 2021, the Company entered into the Stanford License Agreement (Note 6), which was amended in July 2023, pursuant to which the Company is required to pay annual license maintenance fees, clinical development and commercial sales milestone payments and low single-digit royalties on net sales of licensed products. All products were in development as of September 30, 2023, and no royalties were due as of such date. The Company paid a $25,000 license maintenance fee in each of March 2023 and 2022 and recognized this as a research and development expense in the condensed statements of operations and comprehensive loss for each of the nine months ended September 30, 2023 and 2022. No expenses were recognized for each of the three months ended September 30, 2023 and 2022. Legal Proceedings The Company, from time to time, may be party to litigation arising in the ordinary course of business. The Company was not subject to any material legal proceedings during the nine months ended September 30, 2023 and the year ended December 31, 2022, and, to the best of its knowledge, no material legal proceedings are currently pending. Guarantees and Indemnifications In the normal course of business, the Company enters into agreements that contain a variety of representations and provide for general indemnification. The Company’s exposure under these agreements is unknown because it involves claims that may be made against the Company in the future. To date, the Company has not paid any claims or been required to defend any action related to its indemnification obligations. As of September 30, 2023 and December 31, 2022, the Company does not have any material indemnification claims that are probable or reasonably possible and consequently has not recorded related liabilities.

Common Stock

Common Stock	9 Months Ended
	Sep. 30, 2023
Common Stock [Abstract]
COMMON STOCK	NOTE 9. COMMON STOCK The Company is authorized to issue 490,000,000 shares of voting common stock, 2,000,000 shares of non-voting common stock, and 10,000,000 shares of undesignated preferred stock. There were 110,850,413 shares of voting common stock, no As of September 30, 2023 and December 31, 2022, the Company had shares of its common stock reserved for future issuance as follows: September 30, December 31, 2023 2022 Outstanding and issued common stock options 10,272,369 6,169,180 Common stock warrants 4,999,863 4,999,863 Outstanding restricted stock units 1,076,814 2,617,445 Shares available for grant under 2021 Employee Stock Purchase Plan 1,184,572 869,117 Shares available for grant under 2021 Equity Incentive Plan 1,086,589 1,383,661 Shares available for grant under 2022 Inducement Equity Incentive Plan 1,196,841 1,295,672 Total shares of common stock reserved 19,817,048 17,334,938 Shelf Registration Statement and Public Offering In October 2022, the Company filed a shelf registration statement on Form S-3 (the “Prior S-3”) with the SEC. The Company could sell from time to time up to $150.0 million of common stock, preferred stock, debt securities, warrants, rights, units or depositary shares comprised of any combination of these securities, for the Company’s own account in one or more offerings under the Prior S-3. In April 2023, the Company filed a new shelf registration statement on Form S-3 (“New S-3”) with the SEC, which was declared effective on May 5, 2023 and superseded the Prior S-3. The Company can sell from time to time up to $250.0 million of common stock, preferred stock, debt securities, warrants, rights, units or depositary shares comprised of any combination of these securities, for the Company’s own account in one or more offerings under the New S-3. The terms of any offering under the New S-3 will be established at the time of such offering and will be described in a prospectus supplement to the New S-3 filed with the SEC prior to the completion of any such offering. In January 2023, the Company entered into an underwriting agreement with Credit Suisse Securities (USA) LLC, William Blair & Company, L.L.C. and Oppenheimer & Co. Inc., as the representatives of the several underwriters named therein (the “Underwriters”), relating to an underwritten public offering (the “Offering”). In January 2023, the Company sold 69,000,000 shares of common stock, including 9,000,000 shares issued as a result of the exercise of the Underwriters’ option to purchase 9,000,000 shares, and received net proceeds of $96.9 million. ATM Offering In November 2022, the Company entered into a Controlled Equity Offering SM On May 5, 2023, the Company filed with the SEC a prospectus under the New S-3 in connection with the ATM Offering, pursuant to which the Company can now offer and sell shares of common stock having an aggregate offering price of up to $75.0 million. As of September 30, 2023, $175.0 million remained available and unallocated under the New S-3 and $75.0 million remained available under the ATM Offering.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2023
Stock-Based Compensation [Abstract]
STOCK-BASED COMPENSATION	NOTE 10. STOCK-BASED COMPENSATION On September 23, 2021, the 2021 Equity Incentive Plan (“2021 Plan”) and the 2021 Employee Stock Purchase Plan (“ESPP”) became effective. The 2021 Plan and ESPP provide for annual automatic increases in the number of shares reserved under each plan on January 1 of each year, beginning on January 1, 2022 and through January 1, 2031. The number of shares available for issuance under the 2021 Plan will increase annually in an amount equal to the least of (i) 2,750,000 shares, (ii) a number of shares equal to 4% of the total number of shares of all classes of common stock of the Company outstanding on the last day of the immediately preceding fiscal year, or (iii) such lesser number of shares determined by the Company’s Board of Directors (“Board”) no later than the last day of the immediately preceding fiscal year. The number of shares of common stock available for issuance under the ESPP will increase annually in an amount equal to the least of (i) 550,000 shares of common stock, (ii) a number of shares of common stock equal to 1% of the total number of shares of all classes of common stock of the Company on the last day of the immediately preceding fiscal year, or (iii) such number of shares determined by the Board. As of September 30, 2023, 6,403,566 shares were reserved for issuance under the 2021 Plan, of which 1,086,589 shares were available for future grant and 5,316,977 shares were subject to outstanding options and restricted stock units (“RSUs”), including performance-based awards. As of September 30, 2023, 124,435 shares have been issued under the ESPP and 1,184,572 shares were reserved and available for future issuance. On March 14, 2022, the Compensation Committee of the Board adopted the 2022 Inducement Equity Incentive Plan (the “2022 Inducement Plan”) under which the Company may grant equity awards to new employees. The only persons eligible to receive grants under the 2022 Inducement Plan are individuals who satisfy the standards for inducement grants under Nasdaq guidance. As of September 30, 2023, 5,500,000 shares were reserved for issuance under the 2022 Inducement Plan, of which 1,196,841 shares were available for future grant and 4,303,159 shares were subject to outstanding stock options. Under the 2021 Plan, the Company can grant incentive stock options, nonstatutory stock options, restricted stock awards, stock appreciation rights, restricted stock units, performance awards and other awards to employees, directors and consultants. Under the 2022 Inducement Plan, the Company can grant nonstatutory stock options, restricted stock awards, stock appreciation rights, RSUs, performance awards and other awards, but only to an individual, as a material inducement to such individual to enter into employment with the Company or an affiliate of the Company, who (i) has not previously been an employee or director of the Company or (ii) is rehired following a bona fide period of non-employment with the Company. Under the ESPP, the Company can grant purchase rights to employees to purchase shares of common stock at a purchase price which is equal to 85% of the fair market value of common stock on the offering date or on the exercise date, whichever is lower. Stock options under the 2021 Plan and the 2022 Inducement Plan may be granted for periods of up to 10 years and at prices no less than 100% of the fair market value of the shares on the date of grant, provided, however, that the exercise price of an incentive stock option (which cannot be granted pursuant to the 2022 Inducement Plan) granted to a 10% stockholder may not be less than 110% of the fair market value of the shares. Stock options granted to employees and non-employees generally vest ratably over four years. Stock Option Activity The following table summarizes the stock option activity, including performance-based stock options, under the 2021 Plan, the 2022 Inducement Plan and the Company’s 2019 Equity Incentive Plan (the “2019 Plan”) for the nine months ended September 30, 2023: Options Outstanding Number of Weighted Weighted - Aggregate Balance, December 31, 2022 6,169,180 $ 2.25 7.80 $ — Options granted 5,570,696 $ 1.64 Options exercised (545,816 ) $ 0.71 Options cancelled/forfeited (921,691 ) $ 1.84 Balance, September 30, 2023 10,272,369 $ 2.04 8.77 $ 3 Vested and expected to vest, September 30, 2023 10,272,369 $ 2.04 8.77 $ 3 Exercisable, September 30, 2023 2,938,989 $ 1.99 7.54 $ 1 The aggregate intrinsic value represents the difference between the estimated fair value of the underlying common stock and the exercise price of outstanding, in-the-money options. The total intrinsic value of the options exercised during the three and nine months ended September 30, 2023 was less than $0.1 million and $0.4 million, respectively, and during the three and nine months ended September 30, 2022 was less than $0.1 million and $0.1 million, respectively. The total fair value of options that vested during the nine months ended September 30, 2023 and 2022 was $2.7 million and $1.0 million, respectively. The weighted-average grant date fair value of options granted during the nine months ended September 30, 2023 and 2022 was $1.35 and $1.88 per share, respectively. Unamortized stock-based compensation for granted options as of September 30, 2023 was $10.5 million, which is expected to be recognized over a weighted-average period of 2.96 years, including $0.1 million related to performance-based stock options, which is expected to be recognized over a weighted-average period of 0.50 years. Performance-based stock options The following table summarizes the performance-based stock options activity under the 2021 Plan and the 2019 Plan, which are included in the stock option activity table above, for the nine months ended September 30, 2023: Options Weighted Weighted Aggregate Balance, December 31, 2022 463,959 $ 1.42 8.06 $ — Options granted 50,000 $ 1.92 Options cancelled/forfeited (50,000 ) $ 1.92 Balance, September 30, 2023 463,959 $ 1.42 7.31 $ — Vested and expected to vest, September 30, 2023 463,959 $ 1.42 7.31 $ — Exercisable, September 30, 2023 313,959 $ 0.78 6.71 $ — Restricted Stock Units (“RSUs”) The following table provides a summary of RSU activity under the 2021 Plan during the nine months ended September 30, 2023: Number of Weighted Unvested restricted stock units at December 31, 2022 2,617,445 $ 0.79 Granted 50,000 $ 1.50 Vested (1,309,356 ) $ 0.79 Forfeited (281,275 ) $ 0.92 Unvested restricted stock units at September 30, 2023 1,076,814 $ 0.79 Outstanding restricted stock units at September 30, 2023 1,076,814 $ 0.79 The total fair value of RSUs that vested during the nine months ended September 30, 2023 was $1.0 million. Unamortized stock-based compensation for RSUs as of September 30, 2023 was $0.1 million, which is expected to be recognized over a weighted-average period of 0.03 years. In October 2023, 1,076,814 RSUs vested and the Company released 724,848 shares of the common stock, net of tax withholdings, to the RSU holders. Employee Stock Purchase Plan The Company issued zero Stock-Based Compensation Expense The following table presents stock-based compensation expenses related to options and RSUs granted to employees and non-employees, ESPP awards and restricted common stock shares issued to founders (in thousands): Three Months Ended Nine Months Ended 2023 2022 2023 2022 General and administrative $ 1,014 $ 475 $ 2,713 $ 1,511 Research and development 381 169 1,340 976 Total $ 1,395 $ 644 $ 4,053 $ 2,487 The Company recognized stock-based compensation income of $0.1 million and expense of less than $0.1 million related to performance-based options and RSUs during the three and nine months ended September 30, 2023, respectively, and stock-based compensation expense of $0.1 million during each of the three and nine months ended September 30, 2022. Valuation of Stock Options The grant date fair value of stock options was estimated using a Black-Scholes option-pricing model with the following assumptions: Three Months Ended Nine Months Ended 2023 2022 2023 2022 Expected term (in years) 5.46 – 6.08 6.01 – 6.08 5.25 – 6.08 1.00-6.08 Expected volatility 108.08% – 108.88 % 105.64% – 105.99 % 103.31% – 108.98 % 63.41% – 105.99 % Risk-free interest rate 4.12% – 4.55 % 2.99% – 3.27 % 3.45% – 4.55 % 1.40% – 3.27 % Expected dividend yield — — — — Valuation of ESPP Awards The grant date fair value of ESPP awards was estimated using a Black-Scholes option-pricing model with the following assumptions: Three Months Ended Nine Months Ended 2023 2022 2023 2022 Expected term (in years) — — 0.50 0.50 Expected volatility — — 266.24 % 75.60 % Risk-free interest rate — — 5.39 % 1.81 % Expected dividend yield — — — —

Net Loss Per Share Attributable

Net Loss Per Share Attributable to Common Stockholders	9 Months Ended
	Sep. 30, 2023
Net Loss Per Share Attributable to Common Stockholders [Abstract]
NET LOSS PER SHARE ATTRIBUTABLE TO COMMON STOCKHOLDERS	NOTE 11. NET LOSS PER SHARE ATTRIBUTABLE TO COMMON STOCKHOLDERS The following table sets forth the computation of basic and diluted net loss per share attributable to common stockholders (in thousands, except share and per share data): Three Months Ended Nine Months Ended 2023 2022 2023 2022 Numerator: Net loss attributable to common stockholders $ (17,544 ) $ (11,863 ) $ (47,884 ) $ (24,474 ) Denominator: Weighted average common shares outstanding 110,813,456 37,983,458 103,495,180 37,913,135 Less: Weighted-average unvested restricted shares (42,715 ) (367,808 ) (94,040 ) (438,135 ) Less: Shares subject to earnout (1,050,000 ) (1,050,000 ) (1,050,000 ) (1,050,000 ) Weighted average shares used to compute basic and diluted net loss per share 109,720,741 36,565,650 102,351,140 36,425,000 Net loss per share attributable to common stockholders – basic and diluted $ (0.16 ) $ (0.32 ) $ (0.47 ) $ (0.67 ) The potential shares of common stock that were excluded from the computation of diluted net loss per share attributable to common stockholders for the periods presented because including them would have had an antidilutive effect were as follows: Three Months Ended Nine Months Ended 2023 2022 2023 2022 Outstanding and issued common stock options 10,272,369 6,279,930 10,272,369 6,279,930 Common stock warrants 4,999,863 4,999,863 4,999,863 4,999,863 Unvested restricted common stock 23,532 329,441 23,532 329,441 Outstanding restricted stock units 1,076,814 3,125 1,076,814 3,125 Total 16,372,578 11,612,359 16,372,578 11,612,359

Related Parties

Related Parties	9 Months Ended
	Sep. 30, 2023
Related Parties [Abstract]
RELATED PARTIES	NOTE 12. RELATED PARTIES The Company entered into consulting agreements with two founders, one of whom is also a member of the Board, and each of whom also received founders’ common stock shares for services and assigned patents. The Company recorded $0.1 million for the founders’ advisory and consulting services performed for each of the three months ended September 30, 2023 and 2022. The Company recorded $0.2 million and $0.4 million for the founders’ advisory and consulting services performed for the nine months ended September 30, 2023 and 2022, respectively. These expenses were recorded as research and development expenses in the condensed consolidated statements of operations and comprehensive loss. Also, the Company’s licensed technology from Stanford (see Note 6) was created in the Stanford laboratory of Professor Judith Shizuru, one of the Company’s founders and a member of the Board.

Accounting Policies, by Policy

Accounting Policies, by Policy (Policies)	9 Months Ended
	Sep. 30, 2023
Summary of Significant Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The condensed consolidated financial statements and accompanying notes are unaudited and have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and applicable rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”) regarding interim financial reporting. The accompanying condensed financial statements are consolidated and include the accounts of Jasper Therapeutics, Inc. and its wholly-owned subsidiary, Jasper Tx Corp. All intercompany transactions and balances have been eliminated upon consolidation. Certain information and footnote disclosures normally included in the financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. Accordingly, these condensed consolidated financial statements should be read in conjunction with the audited financial statements and the related notes thereto for the year ended December 31, 2022 included in the Company’s Annual Report on the Form 10-K filed with the SEC on March 8, 2023. The information as of December 31, 2022, included in the condensed consolidated balance sheets was derived from the Company’s audited financial statements. These unaudited interim condensed consolidated financial statements have been prepared on the same basis as the Company’s annual consolidated financial statements and, in the opinion of management, reflect all adjustments, which include only normal recurring adjustments necessary for a fair statement of the Company’s consolidated financial statements. The results of operations for the three and nine months ended September 30, 2023 are not necessarily indicative of the results that may be expected for the year ending December 31, 2023 or for any other interim period or for any other future year.
Use of Estimates	Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates, assumptions and judgements that affect the reported amounts of assets and liabilities and disclosure of contingent liabilities as of the date of the financial statements and the reported amounts of income and expenses during the reporting periods. Significant estimates and assumptions made in the accompanying condensed consolidated financial statements include, but are not limited to, the determination of the accrued research and development expenses, valuation of earnout liability and the measurement of stock-based compensation expense. The Company evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors and adjusts those estimates and assumptions when facts and circumstances dictate. Actual results could materially differ from those estimates.
Cash, Cash Equivalents, and Restricted Cash	Cash, Cash Equivalents, and Restricted Cash The following table provides a reconciliation of cash and restricted cash reported within the condensed consolidated balance sheets that sum to the total amount shown in the condensed consolidated statements of cash flows (in thousands): September 30, December 31, 2023 2022 Cash and cash equivalents $ 103,867 $ 38,250 Restricted cash 417 417 Total cash, cash equivalents and restricted cash $ 104,284 $ 38,667 Cash and cash equivalents consist of cash held in operating accounts and investments in money market funds with an original maturity of three months or less at the time of purchase. Restricted cash relates to the letter of credit secured in conjunction with the operating lease (Note 8). Cash balances are held at financial institutions and account balances may exceed federally insured limits. To date, the Company has not experienced any losses on its cash, cash equivalents and marketable securities’ balances and periodically evaluates the creditworthiness of its financial institutions. On March 10, 2023, Silicon Valley Bank (“SVB”) was closed by the California Department of Financial Protection and Innovation, which appointed the Federal Deposit Insurance Corporation (“FDIC”) as receiver. On March 12, 2023 the FDIC transferred all deposits, both insured and uninsured, and substantially all assets from the former SVB to a newly created, full-service FDIC-operated “bridge bank”, Silicon Valley Bridge Bank, N.A. (“SVBB”) and the FDIC, Treasury Department, and Federal Reserve announced that all deposits will be fully protected, whether or not they had been insured by the FDIC. On March 27, 2023, First-Citizens Bank & Trust Company assumed all of SVBB’s customer deposits and certain other liabilities and acquired substantially all of SVBB’s loans and certain other assets from the FDIC. As of September 30, 2023, the Company had $1.0 million of cash and cash equivalents and $3.4 million of marketable securities at SVBB. As of the date of the issuance of these condensed consolidated financial statements, the Company has full access to and control over all of its cash, cash equivalents and marketable securities.
Segment Reporting	Segment Reporting The Company has determined it operates as a single operating and reportable segment. The Company’s chief operating decision maker, its Chief Executive Officer, manages the Company’s operations on a consolidated basis for the purposes of allocating resources. All long-lived assets are located in the United States.
New Accounting Pronouncements Not Yet Adopted	New Accounting Pronouncements Not Yet Adopted In June 2022, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sales Restrictions, which (1) clarifies the guidance in Topic 820 on the fair value measurement of an equity security that is subject to contractual restrictions that prohibit the sale of an equity security and (2) requires specific disclosures related to such an equity security. This guidance is effective for fiscal years beginning after December 15, 2023, and interim periods within those fiscal years. The Company does not expect the adoption of this ASU to have a significant impact on the Company’s consolidated financial statements. In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting, which provides optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships and other transactions affected by reference rate reform if certain criteria are met. The amendments in this ASU were effective for all entities as of March 12, 2020 through December 31, 2022; however, in December 2022, the FASB issued ASU No. 2022-06, Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848, which extended the sunset date from December 31, 2022 to December 31, 2024. An entity may elect to apply the amendments for contract modifications by Topic or Industry Subtopic as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020, or prospectively from the date that the financial statements are available to be issued. Once elected for a Topic or an Industry Subtopic, the amendments must be applied prospectively for all eligible contract modifications for that Topic or Industry Subtopic. The Company is currently evaluating the effect of ASU No. 2020-04 on its consolidated financial statements.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2023
Summary of Significant Accounting Policies [Abstract]
Schedule of Reconciliation of Cash and Restricted Cash	The following table provides a reconciliation of cash and restricted cash reported within the condensed consolidated balance sheets that sum to the total amount shown in the condensed consolidated statements of cash flows (in thousands): September 30, December 31, 2023 2022 Cash and cash equivalents $ 103,867 $ 38,250 Restricted cash 417 417 Total cash, cash equivalents and restricted cash $ 104,284 $ 38,667

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2023
Fair Value Measurements [Abstract]
Schedule of Financial Assets and Liabilities Measured on a Recurring Basis	The following tables set forth the fair value of the Company’s financial assets and liabilities measured on a recurring basis by level within the fair value hierarchy (in thousands): September 30, 2023 Level 1 Level 2 Level 3 Total Financial assets Money market funds $ 102,867 $ — $ — $ 102,867 Total fair value of assets $ 102,867 $ — $ — $ 102,867 Financial liabilities Earnout liability $ — $ — $ 28 $ 28 Total fair value of financial liabilities $ — $ — $ 28 $ 28 December 31, 2022 Level 1 Level 2 Level 3 Total Financial assets Money market funds $ 37,250 $ — $ — $ 37,250 Total fair value of assets $ 37,250 $ — $ — $ 37,250 Financial liabilities Common stock warrant liability $ 150 $ — $ — $ 150 Earnout liability — — 18 18 Total fair value of financial liabilities $ 150 $ — $ 18 $ 168
Schedule of Changes in the Fair Value of the Company’s Level 3 Financial Liabilities	The following table sets forth a summary of the changes in the fair value of the Company’s Level 3 financial liabilities (in thousands): Earnout Fair Value as of December 31, 2022 $ 18 Change in the fair value included in other expense 764 Fair Value as of March 31, 2023 782 Change in the fair value included in other income (420 ) Fair Value as of June 30, 2023 362 Change in the fair value included in other income (334 ) Fair Value as of September 30, 2023 $ 28 Fair Value as of December 31, 2021 $ 5,743 Change in the fair value included in other income (4,593 ) Fair Value as of March 31, 2022 1,150 Change in the fair value included in other income (625 ) Fair Value as of June 30, 2022 525 Change in the fair value included in other income (422 ) Fair Value as of September 30, 2022 $ 103
Schedule of Fair Value Measurements	The following table presents quantitative information about the inputs and valuation methodologies used for the Company’s fair value measurement classified in Level 3 of the fair value hierarchy at September 30, 2023: Fair value Valuation Significant Earnout liability $ 28 Monte Carlo Simulation Common stock price $ 0.70 Expected term (in years) 0.98 Expected volatility 128.0 % Risk-free interest rate 5.32 % Fair value Valuation Significant Earnout liability $ 18 Monte Carlo Simulation Common stock price $ 0.48 Expected term (in years) 1.73 Expected volatility 105.0 % Risk-free interest rate 4.40 %

Condensed Consolidated Balanc_4

Condensed Consolidated Balance Sheet Components (Tables)	9 Months Ended
	Sep. 30, 2023
Condensed Consolidated Balance Sheet Components [Abstract]
Schedule of Prepaid Expenses and Other Current Assets	The following table summarizes the details of prepaid expenses and other current assets as of the dates set forth below (in thousands): September 30, December 31, 2023 2022 Research and development prepaid expenses $ 481 $ 842 Prepaid insurance 191 1,362 Payroll tax credit receivable 250 250 Other receivables 18 118 Other prepaid expenses and current assets 411 246 Total $ 1,351 $ 2,818
Schedule of Property and Equipment	The following table summarizes the details of property and equipment, net as of the dates set forth below (in thousands): September 30, December 31, 2023 2022 Leasehold improvements $ 2,477 $ 2,477 Lab equipment 1,743 1,706 Office furniture & fixtures 502 502 Computer equipment 145 145 Capitalized software 90 90 Property and equipment, gross 4,957 4,920 Less: accumulated depreciation and amortization (2,177 ) (1,352 ) Property and equipment, net $ 2,780 $ 3,568
Schedule of Accrued Expenses and Other Current Liabilities	The following table summarizes the details of accrued expenses and other current liabilities as of the dates set forth below (in thousands): September 30, December 31, 2023 2022 Research and development accrued expenses $ 5,883 $ 2,651 Accrued employee and related compensation expenses 1,402 1,587 Other 392 194 Total $ 7,677 $ 4,432
Schedule of Other Non-Current Liabilities	The following table summarizes the details of other non-current liabilities as of the dates set forth below (in thousands): September 30, December 31, 2023 2022 CIRM grant liability $ 2,264 $ 2,264 Restricted stock liability 1 9 Other non-current liabilities 32 80 Total $ 2,297 $ 2,353

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2023
Commitments and Contingencies [Abstract]
Schedule of Components of Lease Costs	The components of lease costs, which were included in the Company’s condensed statements of operations and comprehensive loss, are as follows (in thousands): Nine Months Ended 2023 2022 Lease cost Operating lease cost $ 504 $ 454 Short-term lease cost 2 129 Total lease cost $ 506 $ 583
Schedule of Operating Leases	Supplemental information related to the Company’s operating leases is as follows: Nine Months Ended 2023 2022 Cash paid for amounts included in the measurement of lease liabilities (in thousands) $ 834 $ 594 Weighted average remaining lease term (years) 2.9 3.9 Weighted average discount rate 8.00 % 8.00 %
Schedule of Operating Lease Liabilities Showing the Aggregate Lease Payments	The following table summarizes a maturity analysis of the Company’s operating lease liabilities showing the aggregate lease payments as of September 30, 2023 (in thousands): Year ending December 31, Amount 2023 (remainder of the year) $ 285 2024 1,153 2025 1,187 2026 740 Total undiscounted lease payments 3,365 Less imputed interest (351 ) Total discounted lease payments 3,014 Less current portion of lease liability (945 ) Noncurrent portion of lease liability $ 2,069

Common Stock (Tables)

Common Stock (Tables)	9 Months Ended
	Sep. 30, 2023
Common Stock [Abstract]
Schedule of Common Stock Reserved For Future Issuance	As of September 30, 2023 and December 31, 2022, the Company had shares of its common stock reserved for future issuance as follows: September 30, December 31, 2023 2022 Outstanding and issued common stock options 10,272,369 6,169,180 Common stock warrants 4,999,863 4,999,863 Outstanding restricted stock units 1,076,814 2,617,445 Shares available for grant under 2021 Employee Stock Purchase Plan 1,184,572 869,117 Shares available for grant under 2021 Equity Incentive Plan 1,086,589 1,383,661 Shares available for grant under 2022 Inducement Equity Incentive Plan 1,196,841 1,295,672 Total shares of common stock reserved 19,817,048 17,334,938

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2023
Stock-Based Compensation [Abstract]
Schedule of Stock Option Activity	The following table summarizes the stock option activity, including performance-based stock options, under the 2021 Plan, the 2022 Inducement Plan and the Company’s 2019 Equity Incentive Plan (the “2019 Plan”) for the nine months ended September 30, 2023: Options Outstanding Number of Weighted Weighted - Aggregate Balance, December 31, 2022 6,169,180 $ 2.25 7.80 $ — Options granted 5,570,696 $ 1.64 Options exercised (545,816 ) $ 0.71 Options cancelled/forfeited (921,691 ) $ 1.84 Balance, September 30, 2023 10,272,369 $ 2.04 8.77 $ 3 Vested and expected to vest, September 30, 2023 10,272,369 $ 2.04 8.77 $ 3 Exercisable, September 30, 2023 2,938,989 $ 1.99 7.54 $ 1 Options Weighted Weighted Aggregate Balance, December 31, 2022 463,959 $ 1.42 8.06 $ — Options granted 50,000 $ 1.92 Options cancelled/forfeited (50,000 ) $ 1.92 Balance, September 30, 2023 463,959 $ 1.42 7.31 $ — Vested and expected to vest, September 30, 2023 463,959 $ 1.42 7.31 $ — Exercisable, September 30, 2023 313,959 $ 0.78 6.71 $ —
Schedule of RSUs Activity	The following table provides a summary of RSU activity under the 2021 Plan during the nine months ended September 30, 2023: Number of Weighted Unvested restricted stock units at December 31, 2022 2,617,445 $ 0.79 Granted 50,000 $ 1.50 Vested (1,309,356 ) $ 0.79 Forfeited (281,275 ) $ 0.92 Unvested restricted stock units at September 30, 2023 1,076,814 $ 0.79 Outstanding restricted stock units at September 30, 2023 1,076,814 $ 0.79
Schedule of Stock-Based Compensation Expense	The following table presents stock-based compensation expenses related to options and RSUs granted to employees and non-employees, ESPP awards and restricted common stock shares issued to founders (in thousands): Three Months Ended Nine Months Ended 2023 2022 2023 2022 General and administrative $ 1,014 $ 475 $ 2,713 $ 1,511 Research and development 381 169 1,340 976 Total $ 1,395 $ 644 $ 4,053 $ 2,487
Schedule of Fair Value of Stock Options Was Estimated Using a Black-Scholes Option-Pricing Model	The grant date fair value of stock options was estimated using a Black-Scholes option-pricing model with the following assumptions: Three Months Ended Nine Months Ended 2023 2022 2023 2022 Expected term (in years) 5.46 – 6.08 6.01 – 6.08 5.25 – 6.08 1.00-6.08 Expected volatility 108.08% – 108.88 % 105.64% – 105.99 % 103.31% – 108.98 % 63.41% – 105.99 % Risk-free interest rate 4.12% – 4.55 % 2.99% – 3.27 % 3.45% – 4.55 % 1.40% – 3.27 % Expected dividend yield — — — — Three Months Ended Nine Months Ended 2023 2022 2023 2022 Expected term (in years) — — 0.50 0.50 Expected volatility — — 266.24 % 75.60 % Risk-free interest rate — — 5.39 % 1.81 % Expected dividend yield — — — —

Net Loss Per Share Attributab_2

Net Loss Per Share Attributable to Common Stockholders (Tables)	9 Months Ended
	Sep. 30, 2023
Net Loss Per Share Attributable to Common Stockholders [Abstract]
Schedule of Basic and Diluted Net Loss per Share Attributable To Common Stockholders	The following table sets forth the computation of basic and diluted net loss per share attributable to common stockholders (in thousands, except share and per share data): Three Months Ended Nine Months Ended 2023 2022 2023 2022 Numerator: Net loss attributable to common stockholders $ (17,544 ) $ (11,863 ) $ (47,884 ) $ (24,474 ) Denominator: Weighted average common shares outstanding 110,813,456 37,983,458 103,495,180 37,913,135 Less: Weighted-average unvested restricted shares (42,715 ) (367,808 ) (94,040 ) (438,135 ) Less: Shares subject to earnout (1,050,000 ) (1,050,000 ) (1,050,000 ) (1,050,000 ) Weighted average shares used to compute basic and diluted net loss per share 109,720,741 36,565,650 102,351,140 36,425,000 Net loss per share attributable to common stockholders – basic and diluted $ (0.16 ) $ (0.32 ) $ (0.47 ) $ (0.67 )
Schedule of Diluted Net Loss per Share Attributable To Common Stockholders	The potential shares of common stock that were excluded from the computation of diluted net loss per share attributable to common stockholders for the periods presented because including them would have had an antidilutive effect were as follows: Three Months Ended Nine Months Ended 2023 2022 2023 2022 Outstanding and issued common stock options 10,272,369 6,279,930 10,272,369 6,279,930 Common stock warrants 4,999,863 4,999,863 4,999,863 4,999,863 Unvested restricted common stock 23,532 329,441 23,532 329,441 Outstanding restricted stock units 1,076,814 3,125 1,076,814 3,125 Total 16,372,578 11,612,359 16,372,578 11,612,359

Organization and Description _2

Organization and Description of Business (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Organization and Description of Business [Abstract]
Incurred net losses	$ (17,544)	$ (16,080)	$ (14,260)	$ (11,863)	$ (10,404)	$ (2,207)	$ (47,884)	$ (24,474)
Operating cash flows							(35,588)	$ (33,212)
Accumulated deficit	(153,019)						(153,019)		$ (105,135)
Cash and cash equivalents	$ 103,867						$ 103,867		$ 38,250

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details) $ in Millions	Sep. 30, 2023 USD ($)
Summary of Significant Accounting Policies [Abstract]
Cash and cash equivalents	$ 1
Marketable securities	$ 3.4

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Details) - Schedule of Reconciliation of Cash and Restricted Cash - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Schedule of reconciliation of cash and restricted cash [Abstract]
Cash and cash equivalents	$ 103,867	$ 38,250
Restricted cash	417	417
Total cash, cash equivalents and restricted cash	$ 104,284	$ 38,667	$ 51,367	$ 85,046

Fair Value Measurements (Detail

Fair Value Measurements (Details) - Schedule of Financial Assets and Liabilities Measured on a Recurring Basis - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financial assets
Money market funds	$ 102,867	$ 37,250
Total fair value of assets	102,867	37,250
Financial liabilities
Common stock warrant liability		150
Earnout liability	28	18
Total fair value of financial liabilities	28	168
Level 1 [Member]
Financial assets
Money market funds	102,867	37,250
Total fair value of assets	102,867	37,250
Financial liabilities
Common stock warrant liability		150
Earnout liability
Total fair value of financial liabilities		150
Level 2 [Member]
Financial assets
Money market funds
Total fair value of assets
Financial liabilities
Common stock warrant liability
Earnout liability
Total fair value of financial liabilities
Level 3 [Member]
Financial assets
Money market funds
Total fair value of assets
Financial liabilities
Common stock warrant liability
Earnout liability	28	18
Total fair value of financial liabilities	$ 28	$ 18

Fair Value Measurements (Deta_2

Fair Value Measurements (Details) - Schedule of Changes in the Fair Value of the Company’s Level 3 Financial Liabilities - Earnout Liability [Member] - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022
Schedule of Fair Value Measurements [Abstract]
Fair value, as of beginning	$ 362	$ 782	$ 18	$ 525	$ 1,150	$ 5,743
Fair value, as of ending	28	362	782	103	525	1,150
Change in the fair value included in other income (expenses)	$ (334)	$ (420)	$ 764	$ (422)	$ (625)	$ (4,593)

Fair Value Measurements (Deta_3

Fair Value Measurements (Details) - Schedule of Fair Value Measurements - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Schedule of Fair Value Measurements [Abstract]
Fair value (in Dollars)	$ 28	$ 18
Valuation methodology	Monte Carlo Simulation	Monte Carlo  Simulation
Common stock price (in Dollars per share)	$ 0.7	$ 0.48
Expected term (in years)	11 months 23 days	1 year 8 months 23 days
Expected volatility	128%	105%
Risk-free interest rate	5.32%	4.40%

Condensed Consolidated Balanc_5

Condensed Consolidated Balance Sheet Components (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Condensed Consolidated Balance Sheet Components [Abstract]
Depreciation and amortization expense	$ 300	$ 300	$ 825	$ 702

Condensed Consolidated Balanc_6

Condensed Consolidated Balance Sheet Components (Details) - Schedule of Prepaid Expenses and Other Current Assets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of Prepaid Expenses and Other Current Assets [Abstract]
Research and development prepaid expenses	$ 481	$ 842
Prepaid insurance	191	1,362
Payroll tax credit receivable	250	250
Other receivables	18	118
Other prepaid expenses and current assets	411	246
Total	$ 1,351	$ 2,818

Condensed Consolidated Balanc_7

Condensed Consolidated Balance Sheet Components (Details) - Schedule of Property and Equipment - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of Property and Equipment [Abstract]
Leasehold improvements	$ 2,477	$ 2,477
Lab equipment	1,743	1,706
Office furniture & fixtures	502	502
Computer equipment	145	145
Capitalized software	90	90
Property and equipment, gross	4,957	4,920
Less: accumulated depreciation and amortization	(2,177)	(1,352)
Property and equipment, net	$ 2,780	$ 3,568

Condensed Consolidated Balanc_8

Condensed Consolidated Balance Sheet Components (Details) - Schedule of Accrued Expenses and Other Current Liabilities - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of Accrued Expenses and Other Current Liabilities [Abstract]
Research and development accrued expenses	$ 5,883	$ 2,651
Accrued employee and related compensation expenses	1,402	1,587
Other	392	194
Total	$ 7,677	$ 4,432

Condensed Consolidated Balanc_9

Condensed Consolidated Balance Sheet Components (Details) - Schedule of Other Non-Current Liabilities - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of Other Non-Current Liabilities [Abstract]
CIRM grant liability	$ 2,264	$ 2,264
Restricted stock liability	1	9
Other non-current liabilities	32	80
Total	$ 2,297	$ 2,353

Cirm Grant (Details)

Cirm Grant (Details) - USD ($)	1 Months Ended	9 Months Ended
	Nov. 30, 2020	Sep. 30, 2023
Cirm Grant Disclosure [Abstract]
Research project related cost	$ 2,300,000
Percentage of licensing fees		0.10%
Percentage of converted loan		60%
Received from interest rate		25%
Received aggregate from CIRM		$ 2,300,000
Cash		700,000
Other receivables milestone		50,000
CIRM [Member]
Cirm Grant Disclosure [Abstract]
Grant amount		$ 1,000,000

Significant Agreements (Details

Significant Agreements (Details)	9 Months Ended
	Sep. 30, 2023 USD ($)
Significant Agreements (Details) [Line Items]
Sales milestone payments	$ 9,000,000
License maintenance fee	25,000
First and Second Year [Member]
Significant Agreements (Details) [Line Items]
Commercial sale	25,000
Third and Fourth Year [Member]
Significant Agreements (Details) [Line Items]
Commercial sale	35,000
Anniversary Ending [Member]
Significant Agreements (Details) [Line Items]
Commercial sale	50,000
ISRA [Member]
Significant Agreements (Details) [Line Items]
Option exercise fee	$ 1,000,000

Derivative Financial Instrume_2

Derivative Financial Instruments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Derivative Financial Instruments (Details) [Line Items]
Expire date			Sep. 24, 2026
Non voting common stock (in Shares)	911,022		911,022
Warrants outstanding (in Shares)	4,999,863		4,999,863
Fair value equity			$ 0.7
Recognized gain (loss)	$ 0	$ 0.2	0.6	$ 7.1
Fair value of common stock					$ 0.2
Estimated fair value	0.1		0.1		$ 0.1
Gain (loss)	$ 0.3		$ 0.1
Monte Carlo Simulation Model [Member]
Derivative Financial Instruments (Details) [Line Items]
Recognized gain (loss)		$ 0.4		$ 5.6
Business Combination [Member]
Derivative Financial Instruments (Details) [Line Items]
Description of contingent earnout liability			Upon the closing of the Business Combination and pursuant to the Sponsor Support Agreement, dated May 5, 2021 and amended on September 24, 2021, by and among the Company, Amplitude Healthcare Holdings LLC (the “Sponsor”) and Old Jasper, the Sponsor agreed to place 1,050,000 shares of the Company’s common stock that were previously issued to the Sponsor (the “Earnout Shares”) into escrow, which will be released as follows: (a) 250,000 Earnout Shares will be released if, during the period from and after September 24, 2021 until September 24, 2024 (the “Earnout Period”), over any twenty trading days within any thirty day consecutive trading day period, the volume-weighted average price of the Company’s common stock (the “Applicable VWAP”) is greater than or equal to $11.50, (b) 500,000 Earnout Shares will be released if, during the Earnout Period, the Applicable VWAP is greater than or equal to $15.00 and (c) 300,000 Earnout Shares will be released if, during the Earnout Period, the Applicable VWAP is greater than or equal to $18.00 (the “triggering events”).

Commitments and Contingencies_2

Commitments and Contingencies (Details)	1 Months Ended					9 Months Ended	12 Months Ended	24 Months Ended
	Mar. 31, 2023 USD ($)	Jul. 22, 2022 USD ($)	Mar. 31, 2022 USD ($) ft²	Jan. 31, 2022 ft²	Aug. 31, 2020 ft²	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)
Commitments and Contingencies (Details) [Line Items]
Rentable square feet (in Square Feet) | ft²				5,611	7,781
Agreement for square feet (in Square Feet) | ft²			5,144
Temporary office space rent		$ 26,000
Lessor amount		$ 400,000
Tenant improvements allowance						$ 1,500,000
Additional allowance						$ 400,000
leasehold improvements allowance							$ 1,900,000	$ 1,900,000
Net construction costs, percentage						5%
Pay stanford net						$ 900,000
Pay stanford net term						3 years
First milestone agreement paid						$ 300,000
Research and development expense						300,000
Amount paid						$ 300,000
License maintenance fee	$ 25,000		$ 25,000
Lease Term [Member]
Commitments and Contingencies (Details) [Line Items]
Interest rate percentage						9%

Commitments and Contingencies_3

Commitments and Contingencies (Details) - Schedule of Components of Lease Costs - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Lease cost
Operating lease cost	$ 504	$ 454
Short-term lease cost	2	129
Total lease cost	$ 506	$ 583

Commitments and Contingencies_4

Commitments and Contingencies (Details) - Schedule of Operating Leases - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Schedule of Operating Leases [Abstract]
Cash paid for amounts included in the measurement of lease liabilities (in thousands)	$ 834	$ 594
Weighted average remaining lease term (years)	2 years 10 months 24 days	3 years 10 months 24 days
Weighted average discount rate	8%	8%

Commitments and Contingencies_5

Commitments and Contingencies (Details) - Schedule of Operating Lease Liabilities Showing the Aggregate Lease Payments - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of Operating Lease Liabilities Showing The Aggregate Lease Payments [Abstract]
2023 (remainder of the year)	$ 285
2024	1,153
2025	1,187
2026	740
Total undiscounted lease payments	3,365
Less imputed interest	(351)
Total discounted lease payments	3,014
Less current portion of lease liability	(945)	$ (865)
Noncurrent portion of lease liability	$ 2,069	$ 2,786

Common Stock (Details)

Common Stock (Details) - USD ($) $ in Thousands					3 Months Ended	9 Months Ended
	May 05, 2023	Jan. 31, 2023	Nov. 10, 2022	Oct. 22, 2022	Mar. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Common Stock [Line Items]
Common stock, shares authorized						492,000,000	492,000,000
Preferred stock shares authorized						10,000,000	10,000,000
Common stock, shares issued						110,850,413	38,045,677
Common stock, shares outstanding						110,850,413	38,045,677
Preferred stock, shares issued
Preferred stock, shares outstanding
Sale of securities (in Dollars)				$ 150,000	$ 725	$ 250,000
Sale of stock		9,000,000
Purchase of shares		9,000,000
Net proceeds (in Dollars)		$ 4,500
Aggregate offering price (in Dollars)	$ 75,000		$ 15,500
Available offering amount (in Dollars)						175,000
Offering cost (in Dollars)						$ 75,000
IPO [Member]
Common Stock [Line Items]
Net proceeds (in Dollars)		$ 96,900
Voting Common Stock [Member]
Common Stock [Line Items]
Common stock, shares authorized						490,000,000
Nonvoting Common Stock [Member]
Common Stock [Line Items]
Common stock, shares authorized						2,000,000
Common Stock [Member]
Common Stock [Line Items]
Sale of stock		69,000,000
Aggregate shares		2,337,496

Common Stock (Details) - Schedu

Common Stock (Details) - Schedule of Common Stock Reserved For Future Issuance - shares	Sep. 30, 2023	Dec. 31, 2022
Common Stock (Details) - Schedule of Common Stock Reserved For Future Issuance [Line Items]
Total shares of common stock reserved	19,817,048	17,334,938
Outstanding and issued common stock options [Member]
Common Stock (Details) - Schedule of Common Stock Reserved For Future Issuance [Line Items]
Total shares of common stock reserved	10,272,369	6,169,180
Common Stock Warrants [Member]
Common Stock (Details) - Schedule of Common Stock Reserved For Future Issuance [Line Items]
Total shares of common stock reserved	4,999,863	4,999,863
Outstanding restricted stock units [Member]
Common Stock (Details) - Schedule of Common Stock Reserved For Future Issuance [Line Items]
Total shares of common stock reserved	1,076,814	2,617,445
Shares available for grant under 2021 Employee Stock Purchase Plan [Member]
Common Stock (Details) - Schedule of Common Stock Reserved For Future Issuance [Line Items]
Total shares of common stock reserved	1,184,572	869,117
Shares available for grant under 2021 Equity Incentive Plan [Member]
Common Stock (Details) - Schedule of Common Stock Reserved For Future Issuance [Line Items]
Total shares of common stock reserved	1,086,589	1,383,661
Shares available for grant under 2022 Inducement Equity Incentive Plan [Member]
Common Stock (Details) - Schedule of Common Stock Reserved For Future Issuance [Line Items]
Total shares of common stock reserved	1,196,841	1,295,672

Stock-Based Compensation (Detai

Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 31, 2023	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Stock-Based Compensation (Details) [Line Items]
Equity incentive plan, description				The number of shares available for issuance under the 2021 Plan will increase annually in an amount equal to the least of (i) 2,750,000 shares, (ii) a number of shares equal to 4% of the total number of shares of all classes of common stock of the Company outstanding on the last day of the immediately preceding fiscal year, or (iii) such lesser number of shares determined by the Company’s Board of Directors (“Board”) no later than the last day of the immediately preceding fiscal year. The number of shares of common stock available for issuance under the ESPP will increase annually in an amount equal to the least of (i) 550,000 shares of common stock, (ii) a number of shares of common stock equal to 1% of the total number of shares of all classes of common stock of the Company on the last day of the immediately preceding fiscal year, or (iii) such number of shares determined by the Board. As of September 30, 2023, 6,403,566 shares were reserved for issuance under the 2021 Plan, of which 1,086,589 shares were available for future grant and 5,316,977 shares were subject to outstanding options and restricted stock units (“RSUs”), including performance-based awards. As of September 30, 2023, 124,435 shares have been issued under the ESPP and 1,184,572 shares were reserved and available for future issuance.
Future grant (in Shares)		1,196,841		1,196,841
Outstanding stock option (in Shares)		4,303,159		4,303,159
Fair market value of common stock percentage				85%
Fair market value percentage		100%		100%
Granted percentage				10%
Intrinsic value of the options exercised		$ 100	$ 100	$ 400	$ 100
Fair value option vested amount				$ 2,700	$ 1,000
Weighted-average grant date fair value price (in Dollars per share)				$ 1.35	$ 1.88
Unamortized stock-based compensation for granted options		$ 10,500		$ 10,500
Recognized over a weighted-average period				2 years 11 months 15 days
Restricted stock units vested (in Shares)	1,076,814
Released shares of common stock, (in Shares)	724,848
Issued of employee stock (in Shares)				65,001
Compensation expense		$ 100		$ 100
Accrued expenses and other current liabilities		100		100
Stock-based compensation expense		$ 1,395	644	$ 4,053	$ 2,487
Stock-based compensation expense			$ 100		$ 100
2022 Inducement Plan [Member]
Stock-Based Compensation (Details) [Line Items]
Reserved share issuance (in Shares)		5,500,000		5,500,000
Fair market value of common stock percentage				110%
Performance-Based Stock Options [Member]
Stock-Based Compensation (Details) [Line Items]
Unamortized stock-based compensation for granted options		$ 100		$ 100
Recognized over a weighted-average period				6 months
Restricted Stock Units (RSUs) [Member]
Stock-Based Compensation (Details) [Line Items]
Fair value option vested amount				$ 1,000
Recognized over a weighted-average period				10 days
Unamortized stock-based compensation		100		$ 100
Stock-based compensation expense		100		$ 100
ESPP [Member]
Stock-Based Compensation (Details) [Line Items]
Recognized over a weighted-average period				2 months 8 days
Unamortized stock-based compensation		$ 100		$ 100

Stock-Based Compensation (Det_2

Stock-Based Compensation (Details) - Schedule of Stock Option Activity - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2023
Stock Option Activity [Member]
Stock-Based Compensation (Details) - Schedule of Stock Option Activity [Line Items]
Number of Shares, beginning Balance	6,169,180
Weighted Average Exercise Price, beginning Balance	$ 2.25
Weighted - Average Remaining Contractual Life (Years), beginning Balance	7 years 9 months 18 days
Aggregate Intrinsic Value, beginning Balance
Number of Shares, Options granted	5,570,696
Weighted Average Exercise Price, Options granted	$ 1.64
Number of Shares,Options exercised	(545,816)
Weighted Average Exercise Price, Options exercised	$ 0.71
Number of Shares, Options cancelled/forfeited	(921,691)
Weighted Average Exercise Price, Options cancelled/forfeited	$ 1.84
Number of Shares, ending Balance	10,272,369
Weighted Average Exercise Price,ending Balance	$ 2.04
Weighted - Average Remaining Contractual Life (Years),ending Balance	8 years 9 months 7 days
Aggregate Intrinsic Value,ending Balance	$ 3
Number of Shares,Vested and expected to ves	10,272,369
Weighted Average Exercise Price, Vested and expected to ves	$ 2.04
Weighted - Average Remaining Contractual Life (Years), Vested and expected to ves	8 years 9 months 7 days
Aggregate Intrinsic Value, Vested and expected to ves	$ 3
Number of Shares,Exercisable	2,938,989
Weighted Average Exercise Price, Exercisable	$ 1.99
Weighted - Average Remaining Contractual Life (Years), Exercisable	7 years 6 months 14 days
Aggregate Intrinsic Value, Exercisable	$ 1
Performance-Based Stock Options [Member]
Stock-Based Compensation (Details) - Schedule of Stock Option Activity [Line Items]
Number of Shares, beginning Balance	463,959
Weighted Average Exercise Price, beginning Balance	$ 1.42
Weighted - Average Remaining Contractual Life (Years), beginning Balance	8 years 21 days
Aggregate Intrinsic Value, beginning Balance
Number of Shares, Options granted	50,000
Weighted Average Exercise Price, Options granted	$ 1.92
Number of Shares, Options cancelled/forfeited	(50,000)
Weighted Average Exercise Price, Options cancelled/forfeited	$ 1.92
Number of Shares, ending Balance	463,959
Weighted Average Exercise Price,ending Balance	$ 1.42
Weighted - Average Remaining Contractual Life (Years),ending Balance	7 years 3 months 21 days
Aggregate Intrinsic Value,ending Balance
Number of Shares,Vested and expected to ves	463,959
Weighted Average Exercise Price, Vested and expected to ves	$ 1.42
Weighted - Average Remaining Contractual Life (Years), Vested and expected to ves	7 years 3 months 21 days
Aggregate Intrinsic Value, Vested and expected to ves
Number of Shares,Exercisable	313,959
Weighted Average Exercise Price, Exercisable	$ 0.78
Weighted - Average Remaining Contractual Life (Years), Exercisable	6 years 8 months 15 days
Aggregate Intrinsic Value, Exercisable

Stock-Based Compensation (Det_3

Stock-Based Compensation (Details) - Schedule of RSUs Activity - Restricted Stock Units [Member]	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Schedule of RSUs Activity [Abstract]
Number of Shares, Unvested restricted stock units at beginning balance | shares	2,617,445
Weighted Average Grant date Fair Value, Unvested restricted stock units at beginning balance | $ / shares	$ 0.79
Number of Shares, Granted | shares	50,000
Weighted Average Grant date Fair Value, Granted | $ / shares	$ 1.5
Number of Shares, Vested | shares	(1,309,356)
Weighted Average Grant date Fair Value, Vested | $ / shares	$ 0.79
Number of Shares, Forfeited | shares	(281,275)
Weighted Average Grant date Fair Value, Forfeited | $ / shares	$ 0.92
Number of Shares, Unvested restricted stock at ending balance | shares	1,076,814
Weighted Average Grant date Fair Value, Unvested restricted stock units at ending balance | $ / shares	$ 0.79
Number of Shares, Outstanding restricted stock units at ending balance | shares	1,076,814
Weighted Average Grant date Fair Value, Outstanding restricted stock units at ending balance | $ / shares	$ 0.79

Stock-Based Compensation (Det_4

Stock-Based Compensation (Details) - Schedule of Stock-Based Compensation Expense - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Stock-Based Compensation (Details) - Schedule of Stock-Based Compensation Expense [Line Items]
Stock-based compensation	$ 1,395	$ 644	$ 4,053	$ 2,487
General and administrative [Member]
Stock-Based Compensation (Details) - Schedule of Stock-Based Compensation Expense [Line Items]
Stock-based compensation	1,014	475	2,713	1,511
Research and development [Member]
Stock-Based Compensation (Details) - Schedule of Stock-Based Compensation Expense [Line Items]
Stock-based compensation	$ 381	$ 169	$ 1,340	$ 976

Stock-Based Compensation (Det_5

Stock-Based Compensation (Details) - Schedule of Fair Value of Stock Options Was Estimated Using a Black-Scholes Option-Pricing Model	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Valuation of ESPP Awards [Member]
Stock-Based Compensation (Details) - Schedule of Fair Value of Stock Options Was Estimated Using a Black-Scholes Option-Pricing Model [Line Items]
Expected term (in years)			6 months	6 months
Expected volatility			266.24%	75.60%
Risk-free interest rate			5.39%	1.81%
Expected dividend yield
Valuation of Stock Options [Member] | Valuation of Stock Options [Member]
Stock-Based Compensation (Details) - Schedule of Fair Value of Stock Options Was Estimated Using a Black-Scholes Option-Pricing Model [Line Items]
Expected dividend yield
Valuation of Stock Options [Member] | Valuation of Stock Options [Member] | Minimum [Member]
Stock-Based Compensation (Details) - Schedule of Fair Value of Stock Options Was Estimated Using a Black-Scholes Option-Pricing Model [Line Items]
Expected term (in years)	5 years 5 months 15 days	6 years 3 days	5 years 3 months	1 year
Expected volatility	108.08%	105.64%	103.31%	63.41%
Risk-free interest rate	4.12%	2.99%	3.45%	1.40%
Valuation of Stock Options [Member] | Valuation of Stock Options [Member] | Maximum [Member]
Stock-Based Compensation (Details) - Schedule of Fair Value of Stock Options Was Estimated Using a Black-Scholes Option-Pricing Model [Line Items]
Expected term (in years)	6 years 29 days	6 years 29 days	6 years 29 days	6 years 29 days
Expected volatility	108.88%	105.99%	108.98%	105.99%
Risk-free interest rate	4.55%	3.27%	4.55%	3.27%
Valuation of ESPP Awards [Member] | Valuation of ESPP Awards [Member]
Stock-Based Compensation (Details) - Schedule of Fair Value of Stock Options Was Estimated Using a Black-Scholes Option-Pricing Model [Line Items]
Expected term (in years)
Expected volatility
Risk-free interest rate
Expected dividend yield

Net Loss Per Share Attributab_3

Net Loss Per Share Attributable to Common Stockholders (Details) - Schedule of Basic and Diluted Net Loss per Share Attributable To Common Stockholders - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Numerator:
Net loss attributable to common stockholders (in Dollars)	$ (17,544)	$ (16,080)	$ (14,260)	$ (11,863)	$ (10,404)	$ (2,207)	$ (47,884)	$ (24,474)
Denominator:
Weighted average common shares outstanding	110,813,456			37,983,458			103,495,180	37,913,135
Less: Weighted-average unvested restricted shares	(42,715)			(367,808)			(94,040)	(438,135)
Less: Shares subject to earnout	(1,050,000)			(1,050,000)			(1,050,000)	(1,050,000)
Weighted average shares used to compute basic and diluted net loss per share	109,720,741			36,565,650			102,351,140	36,425,000
Net loss per share attributable to common stockholders – basic (in Dollars per share)	$ (0.16)			$ (0.32)			$ (0.47)	$ (0.67)

Net Loss Per Share Attributab_4

Net Loss Per Share Attributable to Common Stockholders (Details) - Schedule of Basic and Diluted Net Loss per Share Attributable To Common Stockholders (Parentheticals) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Schedule of Basic and Diluted Net Loss per Share Attributable To Common Stockholders [Abstract]
Weighted average shares used to compute diluted net loss per share	109,720,741	36,565,650	102,351,140	36,425,000
Net loss per share attributable to common stockholders – diluted	$ (0.16)	$ (0.32)	$ (0.47)	$ (0.67)

Net Loss Per Share Attributab_5

Net Loss Per Share Attributable to Common Stockholders (Details) - Schedule of Diluted Net Loss per Share Attributable To Common Stockholders - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Schedule of diluted net loss per share attributable to common stockholders [Abstract]
Outstanding and issued common stock options	16,372,578	11,612,359	16,372,578	11,612,359
Outstanding and issued common stock options [Member]
Schedule of diluted net loss per share attributable to common stockholders [Abstract]
Outstanding and issued common stock options	10,272,369	6,279,930	10,272,369	6,279,930
Common Stock Warrants [Member]
Schedule of diluted net loss per share attributable to common stockholders [Abstract]
Outstanding and issued common stock options	4,999,863	4,999,863	4,999,863	4,999,863
Unvested restricted common stock [Member]
Schedule of diluted net loss per share attributable to common stockholders [Abstract]
Outstanding and issued common stock options	23,532	329,441	23,532	329,441
Outstanding restricted stock units [Member]
Schedule of diluted net loss per share attributable to common stockholders [Abstract]
Outstanding and issued common stock options	1,076,814	3,125	1,076,814	3,125

Related Parties (Details)

Related Parties (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Related Parties [Abstract]
Consulting service amount	$ 0.1	$ 0.1	$ 0.2	$ 0.4