EDGEWISE THERAPEUTICS, INC., 10-Q filed on 5/7/2026
Quarterly Report
v3.26.1
DOCUMENT AND ENTITY INFORMATION - shares
3 Months Ended
Mar. 31, 2026
Apr. 30, 2026
DOCUMENT AND ENTITY INFORMATION    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2026  
Document Transition Report false  
Entity File Number 001-40236  
Entity Registrant Name Edgewise Therapeutics, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 82-1725586  
Entity Address, Address Line One 1715 38th St.  
Entity Address State Or Province CO  
Entity Address, City or Town Boulder  
Entity Address, Postal Zip Code 80301  
City Area Code 720  
Local Phone Number 262-7002  
Title of 12(b) Security Common stock, par value $0.0001 per share  
Trading Symbol EWTX  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   107,593,006
Entity Central Index Key 0001710072  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Amendment Flag false  
v3.26.1
CONDENSED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Current assets    
Cash and cash equivalents $ 33,211 $ 61,148
Marketable securities, available for sale 466,351 468,961
Prepaid expenses and other assets 10,230 13,276
Total current assets 509,792 543,385
Property and equipment, net 7,396 7,831
Operating lease right-of-use asset 1,334 1,387
Total assets 518,522 552,603
Current liabilities    
Accounts payable 7,293 6,006
Accrued compensation 5,678 12,430
Accrued other expenses 8,555 7,920
Operating lease liability, current portion 1,017 1,014
Total current liabilities 22,543 27,370
Operating lease liability, net of current portion 2,776 2,976
Total liabilities 25,319 30,346
Commitments and contingencies (see note 5)
Stockholders' equity:    
Preferred stock, $.0001 par value per share; 200,000,000 shares authorized and no shares issued or outstanding as of March 31, 2026 and December 31, 2025
Common stock, $.0001 par value per share; 1,000,000,000 shares authorized as of March 31, 2026 and December 31, 2025; 107,481,522 shares and 106,249,579 shares issued and outstanding as of March 31, 2026 and December 31, 2025, respectively 10 10
Additional paid-in capital 1,088,829 1,067,941
Accumulated other comprehensive income (loss) (252) 677
Accumulated deficit (595,384) (546,371)
Total stockholders' equity 493,203 522,257
Total liabilities and stockholders' equity $ 518,522 $ 552,603
v3.26.1
CONDENSED BALANCE SHEETS (Parenthetical) - $ / shares
Mar. 31, 2026
Dec. 31, 2025
CONDENSED BALANCE SHEETS    
Preferred stock, par value $ 0.0001 $ 0.0001
Preferred stock, shares authorized (in shares) 200,000,000 200,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value $ 0.0001 $ 0.0001
Common stock, shares authorized 1,000,000,000 1,000,000,000
Common stock, shares issued 107,481,522 106,249,579
Common stock, shares outstanding 107,481,522 106,249,579
v3.26.1
CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Operating expenses    
Research and development $ 42,651 $ 36,757
General and administrative 11,464 9,202
Total operating expenses 54,115 45,959
Loss from operations (54,115) (45,959)
Other income    
Interest income 5,102 5,161
Total other income 5,102 5,161
Net loss (49,013) (40,798)
Other comprehensive income (loss):    
Unrealized loss on available-for-sale securities, net (929) (19)
Total comprehensive loss $ (49,942) $ (40,817)
Net loss per share, basic (in dollars per share) $ (0.46) $ (0.43)
Net loss per share, diluted (in dollars per share) $ (0.46) $ (0.43)
Weighted-average shares outstanding, basic (in shares) 107,116,709 95,130,053
Weighted-average shares outstanding, diluted (in shares) 107,116,709 95,130,053
v3.26.1
CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive Income (Loss)
Accumulated Deficit
Total
Balance, Beginning at Dec. 31, 2024 $ 9 $ 837,363 $ 420 $ (378,576) $ 459,216
Balance, Beginning (in shares) at Dec. 31, 2024 94,838,466        
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Exercise of stock options   2,261     2,261
Exercise of stock options (shares) 367,217        
Stock-based compensation   9,059     9,059
Other comprehensive loss     (19)   (19)
Net loss       (40,798) (40,798)
Balance, Ending at Mar. 31, 2025 $ 9 848,683 401 (419,374) 429,719
Balance, Ending (in shares) at Mar. 31, 2025 95,205,683        
Balance, Beginning at Dec. 31, 2025 $ 10 1,067,941 677 (546,371) $ 522,257
Balance, Beginning (in shares) at Dec. 31, 2025 106,249,579       106,249,579
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Exercise of stock options   12,173     $ 12,173
Exercise of stock options (shares) 1,231,943        
Stock-based compensation   8,715     8,715
Other comprehensive loss     (929)   (929)
Net loss       (49,013) (49,013)
Balance, Ending at Mar. 31, 2026 $ 10 $ 1,088,829 $ (252) $ (595,384) $ 493,203
Balance, Ending (in shares) at Mar. 31, 2026 107,481,522       107,481,522
v3.26.1
CONDENSED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Cash flows from operating activities    
Net loss $ (49,013) $ (40,798)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation 537 513
Stock-based compensation 8,715 9,059
Accretion of discount on marketable securities, net (1,013) (1,923)
Amortization of right-of-use asset 53 41
Changes in assets and liabilities:    
Prepaid expenses and other assets 3,045 (1,478)
Accounts payable 1,446 2,858
Accrued compensation (6,752) (6,081)
Accrued other expenses and other liabilities 635 122
Lease liability (196) (179)
Net cash used in operating activities (42,543) (37,866)
Cash flows from investing activities    
Purchases of marketable securities (110,152) (122,180)
Sales of marketable securities 3,966 15,000
Maturities of marketable securities 108,879 151,122
Purchases of property and equipment (260) (44)
Net cash provided by investing activities 2,433 43,898
Cash flows from financing activities    
Exercise of stock options 12,173 2,261
Payment of deferred offering costs   (38)
Net cash provided by financing activities 12,173 2,223
Net change in cash and cash equivalents (27,937) 8,255
Cash and cash equivalents at beginning of period 61,148 41,666
Cash and cash equivalents at end of period 33,211 49,921
Supplemental disclosures of non-cash investing and financing activities:    
Property and equipment purchases included in accounts payable and accrued other expenses $ 41  
Deferred offering costs included in accounts payable and accrued other expenses   $ 395
v3.26.1
DESCRIPTION OF BUSINESS
3 Months Ended
Mar. 31, 2026
DESCRIPTION OF BUSINESS  
DESCRIPTION OF BUSINESS

NOTE 1  DESCRIPTION OF BUSINESS

Organization and Description of Business

Edgewise Therapeutics, Inc. (the Company) was incorporated as a Delaware corporation in May 2017, and is headquartered in Boulder, Colorado. The Company is a late-stage clinical biopharmaceutical company focused on the discovery, development and commercialization of innovative treatments for severe muscle diseases for which there is significant unmet medical need.

The Company’s lead product candidates are sevasemten and EDG-7500: sevasemten is a selective, fast myofiber (type II) myosin small molecule inhibitor designed to address contraction-induced muscle injury currently being studied in multiple Phase 2 trials in Becker muscular dystrophy (Becker) and Duchenne muscular dystrophy (Duchenne), which are being held in the U.S., Israel, and certain countries in Europe and Australasia, and EDG-7500 is a novel, oral, selective, cardiac sarcomere modulator, specifically designed to slow early contraction velocity and address impaired cardiac relaxation associated with hypertrophic cardiomyopathy (HCM) and other diseases of diastolic dysfunction currently being studied in a multipart Phase 2 trial for the potential treatment of obstructive and nonobstructive HCM.

The Company is also developing EDG-15400, currently in a Phase 1 trial of healthy adults with the future disease target of heart failure with preserved ejection fraction (HFpEF), and using its proprietary drug discovery platform to develop a pipeline of precision medicine product candidates that target key muscle proteins and modulators to address a broad array of serious muscle disorders.

Risks and Uncertainties

The board of directors of the Company discusses with management macroeconomic and geopolitical developments, including inflation, instability in the banking and financial services sector, tightening of the credit markets, the impact of changes in the U.S. government administration and policy positions, international conflicts, public health pandemics, cybersecurity, sanctions, and changes in tariffs so that the Company can be prepared to react to new developments as they arise. The board of directors and the management of the Company are carefully monitoring these developments and the resulting economic impact on its financial condition and results of operations.

Liquidity and Capital Resources

The Company has an accumulated deficit of $595.4 million and cash, cash equivalents and marketable securities of $499.6 million as of March 31, 2026. The Company’s ability to fund ongoing operations is highly dependent upon raising additional capital through the issuance of equity securities and issuing debt or other financing vehicles.

On May 10, 2024, the Company filed an automatic shelf registration statement on Form S-3ASR that allows the Company to undertake various equity and debt offerings. Additionally, on May 10, 2024, the Company filed a prospectus supplement to the shelf registration statement and entered into a sales agreement with Leerink Partners LLC (Leerink Sales Agreement) under which the Company may offer and sell shares of common stock, having aggregate sales proceeds of up to $175.0 million from time to time, through an “at the market offering” program (Leerink ATM) under which Leerink Partners LLC will act as sales agent. The Company has not yet offered or sold any shares of common stock related to the Leerink ATM.

On April 3, 2025, the Company closed an underwritten registered direct offering of 9,935,419 shares of common stock at a public offering price of $20.13 per share (April 2025 Offering). The aggregate gross proceeds from the April 2025 Offering were $200.0 million, and the net proceeds were $187.1 million, after deducting underwriting discounts and commissions of $12.0 million and offering expenses of $0.9 million.

The Company’s ability to secure capital is dependent upon success in developing its technology and product candidates. The Company cannot provide assurance that additional capital will be available on acceptable terms, if at all.

The issuance of additional equity or debt securities will likely result in substantial dilution to the Company’s stockholders. Should additional capital not be available to the Company in the near term, or not be available on acceptable terms, the Company may be unable to realize value from the Company’s assets or discharge liabilities in the normal course of business, which may, among other alternatives, cause the Company to delay, substantially reduce, or discontinue operational activities to conserve cash balances, which could have a material adverse effect on the Company’s ability to achieve its intended business objectives.

The accompanying financial statements have been prepared assuming that the Company will continue as a going concern, which contemplates the realization of assets and the settlement of liabilities and commitments in the normal course of business. The financial statements do not reflect any adjustments relating to the recoverability and reclassification of assets and liabilities that might be necessary if the Company is unable to continue as a going concern. The Company believes that the $499.6 million of cash, cash equivalents and marketable securities on hand as of March 31, 2026 will be sufficient to fund its operations in the normal course of business and meet its liquidity needs through at least the next 12 months from the issuance of these financial statements.

v3.26.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
3 Months Ended
Mar. 31, 2026
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES  
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

NOTE 2  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The accompanying condensed financial statements and related notes to the condensed financial statements should be read in conjunction with the audited financial statements and the related notes thereto for the year ended December 31, 2025 included in the Company’s Annual Report on Form 10-K filed with the Securities and Exchange Commission on February 26, 2026. There have been no material changes to the summary of significant accounting policies as disclosed in that filing.

These interim financial statements have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information and include all adjustments consisting of normal recurring adjustments that management believes are necessary for a fair presentation of the periods presented and are not necessarily indicative of results expected for the full fiscal year or for any subsequent interim period.

Marketable Securities, Available for Sale

All marketable securities have been classified as “available-for-sale” and are carried at fair value, based upon quoted market prices. The Company considers its available-for-sale portfolio as available for use in current operations. Accordingly, the Company classifies its investments as short-term marketable securities, even though the stated maturity date may be one year or more beyond the current balance sheet date. Unrealized gains and losses, net of any related tax effects, are excluded from earnings and are included in other comprehensive income (loss) and reported as a separate component of stockholders’ equity until realized. Interest income, realized gains and losses, and declines in value judged to be other than temporary, if any, on available-for-sale securities are included in other income. The cost of securities sold is based on the specific-identification method. The amortized cost of securities is adjusted for amortization of premiums and accretion of discounts to maturity. In accordance with the Company’s investment policy, management invests in money market funds, corporate debt securities, commercial paper, asset-backed securities and government securities. The Company has not experienced any realized losses on its deposits of cash, cash equivalents, and marketable securities since inception.

The following tables summarize the Company’s financial assets measured at fair value on a recurring basis by level within the fair value hierarchy (in thousands):

As of March 31, 2026

Fair Value 

Amortized

Unrealized

Unrealized

Fair Market

  ​ ​ ​

Hierarchy

  ​ ​ ​

 Cost Basis

  ​ ​ ​

 Gains

  ​ ​ ​

 Losses

  ​ ​ ​

 Value

Cash equivalents:

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

Money market funds

 

Level 1

$

32,999

$

$

$

32,999

Marketable securities, available for sale:

 

  ​

 

 

 

  ​

 

  ​

Asset-backed securities

 

Level 2

 

56,984

17

(24)

 

56,977

Corporate debt securities

 

Level 2

 

181,820

44

(221)

 

181,643

Commercial paper

 

Level 2

 

20,209

2

(36)

 

20,175

U.S. government treasury and agency securities

Level 2

 

207,590

62

(96)

 

207,556

Total

 

  ​

$

499,602

$

125

$

(377)

$

499,350

As of December 31, 2025

Fair Value

Amortized

Unrealized

Unrealized

Fair Market

Hierarchy

  ​ ​ ​

 Cost Basis

  ​ ​ ​

 Gains

  ​ ​ ​

 Losses

  ​ ​ ​

 Value

Cash equivalents:

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

Money market funds

 

Level 1

$

60,965

$

$

$

60,965

Marketable securities, available for sale:

 

  ​

 

 

 

  ​

 

  ​

Asset-backed securities

 

Level 2

 

55,426

 

78

 

 

55,504

Corporate debt securities

 

Level 2

 

193,479

 

270

 

(5)

 

193,744

Commercial paper

Level 2

10,424

7

10,431

U.S. government treasury and agency securities

Level 2

208,955

327

209,282

Total

 

  ​

$

529,249

$

682

$

(5)

$

529,926

The Company’s money market funds are classified as Level 1 because they are valued using quoted market prices. Investments in asset-backed securities, corporate debt securities, commercial paper and U.S. government treasury and agency securities, and supranational and sovereign government securities have been classified as Level 2 as they are valued using quoted prices in less active markets or other directly or indirectly observable inputs. Fair values of asset-backed securities, corporate debt securities, commercial paper, and U.S. government treasury and agency securities were derived based on input of market prices from multiple sources at each reporting period. With regard to commercial paper, all of the securities had high credit ratings and one year or less to maturity; therefore, fair value was derived from accretion of purchase price to face value over the term of maturity or quoted market prices for similar instruments if available. There were no transfers of financial assets between Level 1, Level 2, or Level 3, during the periods presented. As of March 31, 2026, the remaining contractual maturities of $439.1 million of marketable securities were less than one year and $27.5 million of marketable securities were between 1 and 2 years.

The Company periodically reviews its portfolio of debt securities to determine if any investment is impaired due to credit loss or other potential valuation concerns. For debt securities where the fair value of the investment is less than the amortized cost basis, the Company has assessed at the individual security level for various quantitative factors including, but not limited to, the nature of the investments, changes in credit ratings, interest rate fluctuations, industry analyst reports, and the severity of impairment. Unrealized losses on marketable securities at March 31, 2026 were primarily due to changes in interest rates, including market credit spreads, and not due to increased credit risks associated with specific securities.

Accounting Standards Not Yet Adopted

In November 2024, the FASB issued Accounting Standards Update (ASU) 2024-03, Income Statement–Reporting Comprehensive Income–Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. This ASU is expected to improve the disclosures about a public business entity’s expenses and address

requests from investors for more detailed information about the types of expenses (including purchases of inventory, employee compensation, depreciation, amortization, and depletion) in commonly presented expense captions (such as cost of sales, SG&A, and research and development). This ASU is effective beginning with the Company’s 2027 fiscal year annual reporting period and interim periods thereafter, with early adoption permitted. The Company is currently evaluating the impact that the adoption of this standard will have on its financial statements.

In December 2025, the FASB issued ASU 2025-11, Interim Reporting (Topic 270): Narrow Scope Improvements. This ASU is expected to improve the navigability of the required interim disclosures, clarify when that guidance is applicable, and provide additional guidance on what disclosures should be included in interim reporting periods. It also adds a principle requiring entities to disclose events since the end of the last annual reporting period that have a material impact on the entity. This ASU is effective for interim reporting periods within annual reporting periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact that the adoption of this standard will have on its interim financial statements.

v3.26.1
PREFERRED STOCK AND COMMON STOCK
3 Months Ended
Mar. 31, 2026
PREFERRED STOCK AND COMMON STOCK  
PREFERRED STOCK AND COMMON STOCK

NOTE 3  PREFERRED STOCK AND COMMON STOCK

The Company is authorized to issue two classes of stock designated as common stock and preferred stock. As of March 31, 2026, the total number of shares authorized was 1,200,000,000. The total number of shares of common stock authorized was 1,000,000,000. The total number of shares of preferred stock authorized was 200,000,000. All shares of the Company’s capital stock have a par value of $0.0001 per share.

Common stockholders are entitled to dividends if and when declared by the board of directors of the Company and after any convertible preferred share dividends are fully paid. The holder of each share of common stock is entitled to one vote.

v3.26.1
STOCK-BASED COMPENSATION AWARDS
3 Months Ended
Mar. 31, 2026
STOCK-BASED COMPENSATION AWARDS  
STOCK-BASED COMPENSATION AWARDS

NOTE 4  STOCK-BASED COMPENSATION AWARDS

Equity Incentive Plans

In March 2021, the Company’s board of directors adopted, and its stockholders approved, the Company’s 2021 Equity Incentive Plan (2021 Plan), which became effective in March 2021 in connection with the IPO. Upon adoption of the 2021 Plan, the Company restricted the grant of future equity awards under its 2017 Equity Incentive Plan, as amended and restated (2017 Plan).

The 2021 Plan provides for the grant of incentive stock options, within the meaning of Section 422 of the Internal Revenue Code, to the Company’s employees and any of its parent and subsidiary corporations’ employees, and for the grant of nonstatutory stock options, restricted stock, restricted stock units (RSUs), stock appreciation rights, performance units, and performance shares to its employees, directors, and consultants and its subsidiary corporations’ employees and consultants.

The vesting of stock options is stated in each individual grant agreement, which is generally four years. Options granted expire 10 years after the date of grant. An RSU represents the right to receive one share of common stock upon vesting of the RSU. The fair value of each RSU is based on the closing price of the Company’s common stock on the date of grant and generally vest over 2 to 4 years. A total of 5,040,000 shares of the Company’s common stock were initially reserved for issuance pursuant to the 2021 Plan. The 2021 Plan share reserve increases by the number of shares under the 2017 Plan that are repurchased, forfeited, expired or cancelled after the effective date of the 2021 Plan up to the limit under the 2021 Plan. The number of shares available for issuance under the 2021 Plan increases annually on the first day of each fiscal year beginning with the Company’s 2022 fiscal year, equal to the least of (1) 5,040,000 shares, (2) five percent (5%) of the outstanding shares of its common stock as of the last day of the immediately preceding fiscal year; or (3) such other amount as the Company’s board of directors may determine. As of March 31, 2026, there were 7,909,448 shares of common stock available for future issuance under the 2021 Plan.

Inducement Equity Incentive Plan

Effective August 10, 2024, the Company’s board of directors adopted the Company’s 2024 Inducement Equity Incentive Plan (Inducement Plan) and, subject to the adjustment provisions of the Inducement Plan, reserved 2,000,000 shares of the Company’s common stock for issuance pursuant to equity awards granted under the Inducement Plan.

The Inducement Plan was adopted without stockholder approval pursuant to the applicable The Nasdaq Stock Market LLC’s (Nasdaq) Listing Rules. The Inducement Plan provides for the grant of equity-based awards, including nonstatutory stock options, stock appreciation rights, restricted stock, restricted stock units, and performance awards, and its terms are substantially similar to the 2021 Plan, including with respect to treatment of equity awards in the event of a “merger” or “change in control” as defined under the Inducement Plan, but with such other terms and conditions intended to comply with the Nasdaq inducement award exception or to comply with the Nasdaq acquisition and merger exception.

In accordance with the Nasdaq Listing Rules, awards under the Inducement Plan may only be made to individuals not previously employees or non-employee directors of the Company (or following such individuals’ bona fide period of non-employment with the Company), as an inducement material to the individuals’ entry into employment with the Company, or, to the extent permitted by the Nasdaq Listing Rules, in connection with a merger or acquisition. The vesting of stock options is stated in each individual grant agreement, which is generally four years, and expires 10 years after the date of grant. The fair value of each RSU is based on the closing price of the Company’s common stock on the date of grant and vests over 4 years. As of March 31, 2026, there were 688,500 shares available for future issuance under the Inducement Plan.

Founder Stock Options

On September 19, 2017, the Company granted one of its founders the option to purchase 1,795,880 shares of the Company’s common stock at an exercise price of $0.18 per share which vested monthly over a four-year period and expire 15 years after the date of grant. This grant is separate from the Company’s equity incentive plans discussed above. As of March 31, 2026, 1,147,365 options were both outstanding and exercisable.

2021 Employee Stock Purchase Plan

The 2021 Employee Stock Purchase Plan (2021 ESPP) enables eligible employees of the Company to purchase shares of common stock at a discount. A total of 504,000 shares of the Company’s common stock were initially reserved for issuance pursuant to the 2021 ESPP. The number of shares available for issuance under the 2021 ESPP increases annually on the first day of each fiscal year beginning with the Company’s 2022 fiscal year, equal to the least of (1) 1,008,000 shares, (2) one percent (1%) of the outstanding shares of common stock as of the last day of the immediately preceding fiscal year; or (3) such other amount as the Company’s board of directors may determine. As of March 31, 2026, there were 3,908,630 shares of common stock available for future issuance under the 2021 ESPP.

The 2021 ESPP provides for two offering periods of approximately twelve months’ duration, with purchase periods commencing on the first trading day on or after May 15 and November 15 and terminating on the last trading day on or before November 15 of the same year and May 15 of the following year, respectively. Contributions under the 2021 ESPP are limited to 15% of an employee’s eligible compensation, IRS limitations, and a maximum of 6,000 shares of common stock during each offering period. 2021 ESPP participants will purchase shares of common stock at a price per share equal to 85% of the lesser of (1) the fair market value per share of the common stock on the first trading day of the offering period or (2) the fair market value of the common stock on the purchase date.

Total stock-based compensation expense related to all equity plans was allocated as follows (in thousands):

Three months ended March 31, 

  ​ ​ ​

2026

  ​ ​ ​

2025

Research and development

 

$

5,097

 

$

5,867

General and administrative

 

3,618

 

3,192

Total stock-based compensation expense

$

8,715

$

9,059

v3.26.1
COMMITMENTS AND CONTINGENCIES
3 Months Ended
Mar. 31, 2026
COMMITMENTS AND CONTINGENCIES.  
COMMITMENTS AND CONTINGENCIES

NOTE 5  COMMITMENTS AND CONTINGENCIES

Litigation

Liabilities for loss contingencies arising from claims, assessments, litigation, fines, penalties and other sources are recorded when it is probable that a liability has been incurred and the amount can be reasonably estimated. From time to time, the Company may become involved in legal proceedings arising in the ordinary course of business. The Company was not subject to any material legal proceedings during the three months ended March 31, 2026 and no material legal proceedings are currently pending or threatened.

Indemnification Agreements

In the ordinary course of business, the Company may provide indemnification of varying scope and terms to vendors, lessors, business partners and other parties with respect to certain matters including, but not limited to, losses arising from breach of such agreements or from intellectual property infringement claims made by third parties. In addition, the Company has entered into indemnification agreements with members of its board of directors that will require the Company, among other things, to indemnify them against certain liabilities that may arise by reason of their status or service as directors. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is, in many cases, unlimited. To date, the Company has not incurred any material costs as a result of such indemnifications. The Company is not aware of any claims under indemnification arrangements, and it has not accrued any liabilities related to such obligations in its financial statements as of March 31, 2026.

v3.26.1
NET LOSS PER SHARE
3 Months Ended
Mar. 31, 2026
NET LOSS PER SHARE  
NET LOSS PER SHARE

NOTE 6  NET LOSS PER SHARE

Basic net loss per common share is calculated by dividing the net loss by the weighted-average number of common shares outstanding during the period, without consideration of potentially dilutive securities. Diluted net loss per share is computed by dividing the net loss by the weighted-average number of common shares and potentially dilutive securities outstanding for the period. For purposes of the diluted net loss per share calculation, common stock options and unvested restricted stock units are considered to be potentially dilutive securities. The Company’s participating securities do not have a contractual obligation to share in the Company’s losses. As such, the net loss was attributed entirely to common stockholders. As the Company has reported a net loss for all periods presented, diluted net loss per common share is the same as basic net loss per common share for those periods.

The following table sets forth the computation of the basic and diluted net loss per share (in thousands, except share and per share data):

Three Months Ended March 31, 

  ​ ​ ​

2026

  ​ ​ ​

2025

Numerator

Net loss

$

(49,013)

 

$

(40,798)

Denominator

 

 

Weighted-average shares outstanding used in computing net loss per share, basic and diluted

107,116,709

95,130,053

Net loss per share, basic and diluted

$

(0.46)

$

(0.43)

The following weighted average outstanding shares of potentially dilutive securities were excluded from the computation of diluted net loss per share attributable to common stockholders for the periods presented because including them would have been anti-dilutive:

Three Months Ended March 31, 

  ​ ​

2026

  ​ ​ ​

2025

Options to purchase common stock

18,676,439

16,776,912

Unvested restricted stock units

1,228,665

670,137

Total

19,905,104

17,447,049

v3.26.1
PROPERTY AND EQUIPMENT
3 Months Ended
Mar. 31, 2026
PROPERTY AND EQUIPMENT  
PROPERTY AND EQUIPMENT

NOTE 7  PROPERTY AND EQUIPMENT

Property and equipment consisted of the following amounts (in thousands):

As of March 31, 

As of December 31,

  ​ ​ ​

2026

  ​ ​ ​

2025

Leasehold improvements

$

9,825

$

9,646

Laboratory equipment

4,070

4,070

Computers and software

296

296

Furniture and fixtures

511

511

Construction in process

77

Property and equipment, at cost

14,702

14,600

Less: accumulated depreciation

(7,306)

(6,769)

Property and equipment, net

$

7,396

$

7,831

Depreciation expense was $0.5 million for each of the three months ended March 31, 2026 and 2025.

v3.26.1
ACCRUED OTHER EXPENSES
3 Months Ended
Mar. 31, 2026
ACCRUED OTHER EXPENSES  
ACCRUED OTHER EXPENSES

NOTE 8  ACCRUED OTHER EXPENSES

Accrued other expenses consisted of the following amounts (in thousands):

As of March 31, 

As of December 31,

  ​ ​ ​

2026

  ​ ​ ​

2025

Accrued research and development costs

$

7,367

$

7,161

Accrued other

1,188

759

Total accrued other expenses

$

8,555

$

7,920

v3.26.1
SEGMENT REPORTING
3 Months Ended
Mar. 31, 2026
SEGMENT REPORTING  
SEGMENT REPORTING

NOTE 9 SEGMENT REPORTING

There have been no changes in the Company’s assessment of the basis of segmentation or in the basis of measurement of segment profit or loss since the Company’s Annual Report on Form 10-K filed with the Securities and Exchange Commission on February 26, 2026.

Three Months Ended March 31, 

  ​ ​ ​ ​

2026

  ​ ​ ​

2025

Operating expenses:

 

Contracted research expense

$

23,942

$

21,298

Personnel expense

14,725

10,624

Stock-based compensation expense

8,715

9,059

Other segment expense(a)

6,196

4,464

Depreciation

537

514

Segment net loss

(54,115)

(45,959)

Reconciliation of net loss

Interest income

5,102

5,161

Net Loss

$

(49,013)

$

(40,798)

a Other segment expense included in Segment net loss includes contracted administrative expenses, intellectual property fees, software costs, occupancy & equipment costs, and other overhead expenses.

v3.26.1
Pay vs Performance Disclosure - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Pay vs Performance Disclosure    
Net Income (Loss) $ (49,013) $ (40,798)
v3.26.1
Insider Trading Arrangements
3 Months Ended
Mar. 31, 2026
shares
Trading Arrangements, by Individual  
Non-Rule 10b5-1 Arrangement Adopted false
Non-Rule 10b5-1 Arrangement Terminated false
Alan Russell  
Trading Arrangements, by Individual  
Material Terms of Trading Arrangement

On March 13, 2026, Alan Russell, Chief Scientific Officer and Director, adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of up to 200,000 shares of our common stock. The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the trading arrangement is until July 1, 2027, or earlier if all transactions under the trading arrangement are completed.

Name Alan Russell
Title Chief Scientific Officer and Director
Rule 10b5-1 Arrangement Adopted true
Adoption Date March 13, 2026
Aggregate Available 200,000
Expiration Date July 1, 2027
v3.26.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)
3 Months Ended
Mar. 31, 2026
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES  
Basis of Presentation

Basis of Presentation

The accompanying condensed financial statements and related notes to the condensed financial statements should be read in conjunction with the audited financial statements and the related notes thereto for the year ended December 31, 2025 included in the Company’s Annual Report on Form 10-K filed with the Securities and Exchange Commission on February 26, 2026. There have been no material changes to the summary of significant accounting policies as disclosed in that filing.

These interim financial statements have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information and include all adjustments consisting of normal recurring adjustments that management believes are necessary for a fair presentation of the periods presented and are not necessarily indicative of results expected for the full fiscal year or for any subsequent interim period.

Marketable Securities, Available for Sale

Marketable Securities, Available for Sale

All marketable securities have been classified as “available-for-sale” and are carried at fair value, based upon quoted market prices. The Company considers its available-for-sale portfolio as available for use in current operations. Accordingly, the Company classifies its investments as short-term marketable securities, even though the stated maturity date may be one year or more beyond the current balance sheet date. Unrealized gains and losses, net of any related tax effects, are excluded from earnings and are included in other comprehensive income (loss) and reported as a separate component of stockholders’ equity until realized. Interest income, realized gains and losses, and declines in value judged to be other than temporary, if any, on available-for-sale securities are included in other income. The cost of securities sold is based on the specific-identification method. The amortized cost of securities is adjusted for amortization of premiums and accretion of discounts to maturity. In accordance with the Company’s investment policy, management invests in money market funds, corporate debt securities, commercial paper, asset-backed securities and government securities. The Company has not experienced any realized losses on its deposits of cash, cash equivalents, and marketable securities since inception.

The following tables summarize the Company’s financial assets measured at fair value on a recurring basis by level within the fair value hierarchy (in thousands):

As of March 31, 2026

Fair Value 

Amortized

Unrealized

Unrealized

Fair Market

  ​ ​ ​

Hierarchy

  ​ ​ ​

 Cost Basis

  ​ ​ ​

 Gains

  ​ ​ ​

 Losses

  ​ ​ ​

 Value

Cash equivalents:

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

Money market funds

 

Level 1

$

32,999

$

$

$

32,999

Marketable securities, available for sale:

 

  ​

 

 

 

  ​

 

  ​

Asset-backed securities

 

Level 2

 

56,984

17

(24)

 

56,977

Corporate debt securities

 

Level 2

 

181,820

44

(221)

 

181,643

Commercial paper

 

Level 2

 

20,209

2

(36)

 

20,175

U.S. government treasury and agency securities

Level 2

 

207,590

62

(96)

 

207,556

Total

 

  ​

$

499,602

$

125

$

(377)

$

499,350

As of December 31, 2025

Fair Value

Amortized

Unrealized

Unrealized

Fair Market

Hierarchy

  ​ ​ ​

 Cost Basis

  ​ ​ ​

 Gains

  ​ ​ ​

 Losses

  ​ ​ ​

 Value

Cash equivalents:

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

Money market funds

 

Level 1

$

60,965

$

$

$

60,965

Marketable securities, available for sale:

 

  ​

 

 

 

  ​

 

  ​

Asset-backed securities

 

Level 2

 

55,426

 

78

 

 

55,504

Corporate debt securities

 

Level 2

 

193,479

 

270

 

(5)

 

193,744

Commercial paper

Level 2

10,424

7

10,431

U.S. government treasury and agency securities

Level 2

208,955

327

209,282

Total

 

  ​

$

529,249

$

682

$

(5)

$

529,926

The Company’s money market funds are classified as Level 1 because they are valued using quoted market prices. Investments in asset-backed securities, corporate debt securities, commercial paper and U.S. government treasury and agency securities, and supranational and sovereign government securities have been classified as Level 2 as they are valued using quoted prices in less active markets or other directly or indirectly observable inputs. Fair values of asset-backed securities, corporate debt securities, commercial paper, and U.S. government treasury and agency securities were derived based on input of market prices from multiple sources at each reporting period. With regard to commercial paper, all of the securities had high credit ratings and one year or less to maturity; therefore, fair value was derived from accretion of purchase price to face value over the term of maturity or quoted market prices for similar instruments if available. There were no transfers of financial assets between Level 1, Level 2, or Level 3, during the periods presented. As of March 31, 2026, the remaining contractual maturities of $439.1 million of marketable securities were less than one year and $27.5 million of marketable securities were between 1 and 2 years.

The Company periodically reviews its portfolio of debt securities to determine if any investment is impaired due to credit loss or other potential valuation concerns. For debt securities where the fair value of the investment is less than the amortized cost basis, the Company has assessed at the individual security level for various quantitative factors including, but not limited to, the nature of the investments, changes in credit ratings, interest rate fluctuations, industry analyst reports, and the severity of impairment. Unrealized losses on marketable securities at March 31, 2026 were primarily due to changes in interest rates, including market credit spreads, and not due to increased credit risks associated with specific securities.

Accounting Standards Not Yet Adopted

Accounting Standards Not Yet Adopted

In November 2024, the FASB issued Accounting Standards Update (ASU) 2024-03, Income Statement–Reporting Comprehensive Income–Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. This ASU is expected to improve the disclosures about a public business entity’s expenses and address

requests from investors for more detailed information about the types of expenses (including purchases of inventory, employee compensation, depreciation, amortization, and depletion) in commonly presented expense captions (such as cost of sales, SG&A, and research and development). This ASU is effective beginning with the Company’s 2027 fiscal year annual reporting period and interim periods thereafter, with early adoption permitted. The Company is currently evaluating the impact that the adoption of this standard will have on its financial statements.

In December 2025, the FASB issued ASU 2025-11, Interim Reporting (Topic 270): Narrow Scope Improvements. This ASU is expected to improve the navigability of the required interim disclosures, clarify when that guidance is applicable, and provide additional guidance on what disclosures should be included in interim reporting periods. It also adds a principle requiring entities to disclose events since the end of the last annual reporting period that have a material impact on the entity. This ASU is effective for interim reporting periods within annual reporting periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact that the adoption of this standard will have on its interim financial statements.

v3.26.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
3 Months Ended
Mar. 31, 2026
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES  
Schedule of financial assets measured at fair value on a recurring basis by level within the fair value hierarchy

The following tables summarize the Company’s financial assets measured at fair value on a recurring basis by level within the fair value hierarchy (in thousands):

As of March 31, 2026

Fair Value 

Amortized

Unrealized

Unrealized

Fair Market

  ​ ​ ​

Hierarchy

  ​ ​ ​

 Cost Basis

  ​ ​ ​

 Gains

  ​ ​ ​

 Losses

  ​ ​ ​

 Value

Cash equivalents:

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

Money market funds

 

Level 1

$

32,999

$

$

$

32,999

Marketable securities, available for sale:

 

  ​

 

 

 

  ​

 

  ​

Asset-backed securities

 

Level 2

 

56,984

17

(24)

 

56,977

Corporate debt securities

 

Level 2

 

181,820

44

(221)

 

181,643

Commercial paper

 

Level 2

 

20,209

2

(36)

 

20,175

U.S. government treasury and agency securities

Level 2

 

207,590

62

(96)

 

207,556

Total

 

  ​

$

499,602

$

125

$

(377)

$

499,350

As of December 31, 2025

Fair Value

Amortized

Unrealized

Unrealized

Fair Market

Hierarchy

  ​ ​ ​

 Cost Basis

  ​ ​ ​

 Gains

  ​ ​ ​

 Losses

  ​ ​ ​

 Value

Cash equivalents:

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

Money market funds

 

Level 1

$

60,965

$

$

$

60,965

Marketable securities, available for sale:

 

  ​

 

 

 

  ​

 

  ​

Asset-backed securities

 

Level 2

 

55,426

 

78

 

 

55,504

Corporate debt securities

 

Level 2

 

193,479

 

270

 

(5)

 

193,744

Commercial paper

Level 2

10,424

7

10,431

U.S. government treasury and agency securities

Level 2

208,955

327

209,282

Total

 

  ​

$

529,249

$

682

$

(5)

$

529,926

v3.26.1
STOCK-BASED COMPENSATION AWARDS (Tables)
3 Months Ended
Mar. 31, 2026
STOCK-BASED COMPENSATION AWARDS  
Schedule of stock-based compensation expense

Total stock-based compensation expense related to all equity plans was allocated as follows (in thousands):

Three months ended March 31, 

  ​ ​ ​

2026

  ​ ​ ​

2025

Research and development

 

$

5,097

 

$

5,867

General and administrative

 

3,618

 

3,192

Total stock-based compensation expense

$

8,715

$

9,059

v3.26.1
NET LOSS PER SHARE (Tables)
3 Months Ended
Mar. 31, 2026
NET LOSS PER SHARE  
Schedule of computation of the basic and diluted net loss per share

The following table sets forth the computation of the basic and diluted net loss per share (in thousands, except share and per share data):

Three Months Ended March 31, 

  ​ ​ ​

2026

  ​ ​ ​

2025

Numerator

Net loss

$

(49,013)

 

$

(40,798)

Denominator

 

 

Weighted-average shares outstanding used in computing net loss per share, basic and diluted

107,116,709

95,130,053

Net loss per share, basic and diluted

$

(0.46)

$

(0.43)

Schedule of potentially dilutive securities

Three Months Ended March 31, 

  ​ ​

2026

  ​ ​ ​

2025

Options to purchase common stock

18,676,439

16,776,912

Unvested restricted stock units

1,228,665

670,137

Total

19,905,104

17,447,049

v3.26.1
PROPERTY AND EQUIPMENT (Tables)
3 Months Ended
Mar. 31, 2026
PROPERTY AND EQUIPMENT  
Schedule of property plant and equipment

Property and equipment consisted of the following amounts (in thousands):

As of March 31, 

As of December 31,

  ​ ​ ​

2026

  ​ ​ ​

2025

Leasehold improvements

$

9,825

$

9,646

Laboratory equipment

4,070

4,070

Computers and software

296

296

Furniture and fixtures

511

511

Construction in process

77

Property and equipment, at cost

14,702

14,600

Less: accumulated depreciation

(7,306)

(6,769)

Property and equipment, net

$

7,396

$

7,831

v3.26.1
ACCRUED OTHER EXPENSES (Tables)
3 Months Ended
Mar. 31, 2026
ACCRUED OTHER EXPENSES  
Schedule of accrued other expenses

Accrued other expenses consisted of the following amounts (in thousands):

As of March 31, 

As of December 31,

  ​ ​ ​

2026

  ​ ​ ​

2025

Accrued research and development costs

$

7,367

$

7,161

Accrued other

1,188

759

Total accrued other expenses

$

8,555

$

7,920

v3.26.1
SEGMENT REPORTING (Tables)
3 Months Ended
Mar. 31, 2026
SEGMENT REPORTING  
Schedule of revenue and expenses for the operating segment to consolidated amounts

Three Months Ended March 31, 

  ​ ​ ​ ​

2026

  ​ ​ ​

2025

Operating expenses:

 

Contracted research expense

$

23,942

$

21,298

Personnel expense

14,725

10,624

Stock-based compensation expense

8,715

9,059

Other segment expense(a)

6,196

4,464

Depreciation

537

514

Segment net loss

(54,115)

(45,959)

Reconciliation of net loss

Interest income

5,102

5,161

Net Loss

$

(49,013)

$

(40,798)

a Other segment expense included in Segment net loss includes contracted administrative expenses, intellectual property fees, software costs, occupancy & equipment costs, and other overhead expenses.

v3.26.1
DESCRIPTION OF BUSINESS (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended
Apr. 03, 2025
May 10, 2024
Apr. 30, 2025
Mar. 31, 2026
Dec. 31, 2025
Subsidiary, Sale of Stock [Line Items]          
Accumulated deficit       $ 595,384 $ 546,371
Cash, cash equivalents and marketable securities       $ 499,600  
Shares issued 9,935,419        
Share price $ 20.13        
Gross proceeds     $ 200,000    
Proceeds from issuance of common stock     187,100    
Underwriting discounts and commissions     12,000    
Offering expenses     $ 900    
At-the-market program | Common Stock | Maximum          
Subsidiary, Sale of Stock [Line Items]          
Maximum potential aggregate sales proceeds, sales agreement   $ 175,000      
v3.26.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair Value of Financial Instruments (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Marketable Securities, Available For Sale    
Cash and cash equivalents $ 33,211 $ 61,148
Fair Value, Recurring    
Marketable Securities, Available For Sale    
Amortized Cost Basis, Marketable securities, available for sale 499,602 529,249
Unrealized Gains, Marketable securities, available for sale 125 682
Unrealized Losses, Marketable securities, available for sale (377) (5)
Fair Market Value, Marketable securities, available for sale 499,350 529,926
Fair Value, Recurring | Level 1 | Money market funds    
Marketable Securities, Available For Sale    
Cash and cash equivalents 32,999 60,965
Cash equivalents, Fair Market Value 32,999 60,965
Fair Value, Recurring | Level 2 | Asset-backed securities    
Marketable Securities, Available For Sale    
Amortized Cost Basis, Marketable securities, available for sale 56,984 55,426
Unrealized Gains, Marketable securities, available for sale 17 78
Unrealized Losses, Marketable securities, available for sale (24)  
Fair Market Value, Marketable securities, available for sale 56,977 55,504
Fair Value, Recurring | Level 2 | Corporate debt securities    
Marketable Securities, Available For Sale    
Amortized Cost Basis, Marketable securities, available for sale 181,820 193,479
Unrealized Gains, Marketable securities, available for sale 44 270
Unrealized Losses, Marketable securities, available for sale (221) (5)
Fair Market Value, Marketable securities, available for sale 181,643 193,744
Fair Value, Recurring | Level 2 | Commercial paper    
Marketable Securities, Available For Sale    
Amortized Cost Basis, Marketable securities, available for sale 20,209 10,424
Unrealized Gains, Marketable securities, available for sale 2 7
Unrealized Losses, Marketable securities, available for sale (36)  
Fair Market Value, Marketable securities, available for sale 20,175 10,431
Fair Value, Recurring | Level 2 | U.S. government treasury and agency securities    
Marketable Securities, Available For Sale    
Amortized Cost Basis, Marketable securities, available for sale 207,590 208,955
Unrealized Gains, Marketable securities, available for sale 62 327
Unrealized Losses, Marketable securities, available for sale (96)  
Fair Market Value, Marketable securities, available for sale $ 207,556 $ 209,282
v3.26.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Financial Assets Transfers and Maturities (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2026
USD ($)
Remaining contractual maturities  
Fair value assets transfer from level 1 to 2 $ 0
Less than one year 439,100
One year through two years $ 27,500
Minimum  
Remaining contractual maturities  
Maturity period 1 year
Maximum  
Remaining contractual maturities  
Maturity period 2 years
v3.26.1
PREFERRED STOCK AND COMMON STOCK - Narrative (Details)
Mar. 31, 2026
Vote
$ / shares
shares
Dec. 31, 2025
$ / shares
shares
PREFERRED STOCK AND COMMON STOCK    
Total shares authorized 1,200,000,000  
Common stock authorized (in shares) 1,000,000,000 1,000,000,000
Preferred stock, shares authorized (in shares) 200,000,000 200,000,000
Par value of common stock (in dollars per share) | $ / shares $ 0.0001 $ 0.0001
Par value of preferred stock (in dollars per share) | $ / shares $ 0.0001 $ 0.0001
Voting rights upon conversion into common stock | Vote 1  
v3.26.1
STOCK-BASED COMPENSATION AWARDS - Equity Incentive Plans (Details) - 2021 Equity Incentive Plan
1 Months Ended 3 Months Ended
Mar. 31, 2021
USD ($)
Mar. 31, 2026
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting (in years) 4 years  
Expiration period (in years) 10 years  
Number of common stock issued upon vesting of RSU | $ 1  
Shares available for issuance   7,909,448
Percentage of outstanding shares   5.00%
Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares available for issuance   5,040,000
Employees, directors and consultants    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares reserved for the issuance of stock options   5,040,000
Employees, directors and consultants | Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting (in years)   2 years
Employees, directors and consultants | Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting (in years)   4 years
v3.26.1
STOCK-BASED COMPENSATION AWARDS - Inducement Equity Incentive Plan (Details) - 2024 Inducement Equity Incentive Plan - shares
Aug. 10, 2024
Mar. 31, 2026
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares reserved for the issuance of stock options 2,000,000  
Shares available for issuance   688,500
Employee Stock Option    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period (in years) 4 years  
Expiration period (in years) 10 years  
Restricted stock units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period (in years) 4 years  
v3.26.1
STOCK-BASED COMPENSATION AWARDS - Founder Stock Options (Details) - Founder stock options - $ / shares
Sep. 19, 2017
Mar. 31, 2026
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Options granted (in shares) 1,795,880  
Exercise price (in dollars per share) $ 0.18  
Vesting period (in years) 4 years  
Expiration period (in years) 15 years  
Options exercisable (in shares)   1,147,365
Options outstanding (in shares)   1,147,365
v3.26.1
STOCK-BASED COMPENSATION AWARDS - Employee Stock Purchase Plan (Details) - 2021 Employee Stock Purchase Plan
3 Months Ended
Mar. 31, 2026
period
shares
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]  
Shares initially reserved for issuance 504,000
Percentage of outstanding shares 1.00%
Shares reserved for issuance of common stock 3,908,630
Number of offering periods | period 2
Maximum percentage of contributions under ESPP 15.00%
Maximum number of shares per employee (in shares) 6,000
Discounted purchase price in relation to market price (percent) 85.00%
Maximum  
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]  
Shares available for issuance 1,008,000
v3.26.1
STOCK-BASED COMPENSATION AWARDS - Stock based compensation expense (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Total stock-based compensation expense $ 8,715 $ 9,059
Research and development    
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Total stock-based compensation expense 5,097 5,867
General and administrative    
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Total stock-based compensation expense $ 3,618 $ 3,192
v3.26.1
NET LOSS PER SHARE - Computation of Net loss per share (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Numerator    
Net loss $ (49,013) $ (40,798)
Denominator    
Weighted-average shares outstanding used in computing net loss per share, basic 107,116,709 95,130,053
Weighted-average shares outstanding used in computing net loss per share, diluted 107,116,709 95,130,053
Net loss per share, basic $ (0.46) $ (0.43)
Net loss per share, diluted $ (0.46) $ (0.43)
v3.26.1
NET LOSS PER SHARE - Potentially dilutive securities (Details) - shares
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Antidilutive Securities Excluded from Computation of Earnings Per Share    
Potentially dilutive securities (in shares) 19,905,104 17,447,049
Employee Stock Option [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share    
Potentially dilutive securities (in shares) 18,676,439 16,776,912
Unvested restricted stock units    
Antidilutive Securities Excluded from Computation of Earnings Per Share    
Potentially dilutive securities (in shares) 1,228,665 670,137
v3.26.1
PROPERTY AND EQUIPMENT (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Property, Plant and Equipment [Line Items]      
Property and equipment, at cost $ 14,702   $ 14,600
Less: accumulated depreciation (7,306)   (6,769)
Property and equipment, net 7,396   7,831
Depreciation expense 537 $ 513  
Leasehold improvements      
Property, Plant and Equipment [Line Items]      
Property and equipment, at cost 9,825   9,646
Laboratory equipment      
Property, Plant and Equipment [Line Items]      
Property and equipment, at cost 4,070   4,070
Computers and software      
Property, Plant and Equipment [Line Items]      
Property and equipment, at cost 296   296
Furniture and fixtures      
Property, Plant and Equipment [Line Items]      
Property and equipment, at cost $ 511   511
Construction in process      
Property, Plant and Equipment [Line Items]      
Property and equipment, at cost     $ 77
v3.26.1
ACCRUED OTHER EXPENSES (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
ACCRUED OTHER EXPENSES    
Accrued research and development costs $ 7,367 $ 7,161
Accrued other 1,188 759
Total accrued other expenses $ 8,555 $ 7,920
v3.26.1
SEGMENT REPORTING (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Segment Reporting Information [Line Items]    
Number of reportable segments not disclosed true  
Operating expenses:    
Stock-based compensation expense $ 8,715 $ 9,059
Loss from operations (54,115) (45,959)
Interest income 5,102 5,161
Net loss (49,013) (40,798)
Single reportable segment    
Operating expenses:    
Contracted research expense 23,942 21,298
Personnel expense 14,725 10,624
Stock-based compensation expense $ 8,715 9,059
Segment Reporting, Other Segment Item, Composition, Description Other segment expense included in Segment net loss includes contracted administrative expenses, intellectual property fees, software costs, occupancy & equipment costs, and other overhead expenses  
Other segment expense $ 6,196 4,464
Depreciation 537 514
Loss from operations (54,115) (45,959)
Interest income 5,102 5,161
Net loss $ (49,013) $ (40,798)