ALMS on Nasdaq

ALUMIS INC.

American pharmaceutical preparations company based in South San Francisco1

In its 2026 annual report the company says: “We are a clinical stage biopharmaceutical company with an initial focus on developing our two Tyrosine Kinase 2 inhibitors: envudeucitinib, formerly known as ESK-001, a second-generation inhibitor that we are developing to maximize target inhibition and optimize tolerability, and A-005, a central nervous system penetrant allosteric TYK2 inhibitor.”5 Its shares trade on Nasdaq under the symbol ALMS.1

Price unavailable

Last updated Oct 21, 2026.

Overview

$24.1MRevenue, fiscal 20252
-$243.3MNet income, fiscal 20252

Compare with Entrada Therapeutics, Inc., NewAmsterdam Pharma Co N.V. or NextCure, Inc., or pick any stock.

  • TickerALMS on Nasdaq1
  • IndustryPharmaceutical Preparations1
  • HeadquartersSouth San Francisco, California1
  • Incorporated inDE3
  • Business address280 East Grand Avenue, South San Francisco, Ca 940803
  • Filer category, Emerging growth company3
  • Legal formCorporation

Our mission is to significantly improve the lives of patients by replacing broad immunosuppression with targeted therapies. Our name, Alumis, captures our mission to enlighten immunology, and is inspired by the words “allumer”—French for illuminate—and “immunis”—Latin for the immune system.5 From its latest annual report

Financials

From the company’s reports to the SEC. Every number links to the filing it came from.

Key numbers, fiscal 2025

-1886.9%Operating margin2
-1011.7%Net margin2
-80.8%Return on equity2
-$370.2MFree cash flow2

What sells

Revenue by product, business segment and region, as the company reports it to the SEC.

Products and services

License brought in 72% of the revenue ALUMIS INC. broke down this way in fiscal 2025.

  1. License$17.4M272%
  2. Collaboration Revenue$6.7M228%
Products and services by year
Products and services2025
License$17.4M
Collaboration Revenue$6.7M

Where the money goes

Where each dollar of revenue went, fiscal 2025

  • Research and development98¢$386.0M
  • Income tax2¢$8.6M

Out of $24.1M in revenue.2 The company lost money this year.

Financial statements

Operating income62-$453.8M in 2025+187% since 2023
-$600.0M-$400.0M-$200.0M02023: -$158.2M-$158.2M20232024: -$300.8M-$300.8M2024+90%2025: -$453.8M-$453.8M2025+51%
Net income62-$243.3M in 2025+57% since 2023
-$300.0M-$200.0M-$100.0M02023: -$155.0M-$155.0M20232024: -$294.2M-$294.2M2024+90%2025: -$243.3M-$243.3M2025−17%

Every line of the income statement as filed: the last 2 fiscal years, latest first.2

Period ending2025-12-312024-12-31
Total revenue$24.1M
Research and development expenses, including related party expenses of $1,144 and $912 for the years ended December 31, 2025 and 2024, respectively$386.0M$265.6M
General and administrative expenses$91.9M$35.2M
Total operating expenses$477.9M$300.8M
Loss from operations-$453.8M-$300.8M
Gain on bargain purchase$187.9M
Interest income$14.2M$12.0M
Change in fair value of derivative liability-$5.4M
Other income (expenses), net-$169.0K-$93.0K
Total other income (expense), net$201.9M$6.5M
Net loss before income taxes-$251.9M-$294.2M
Income tax benefit$8.6M$0
Net loss-$243.3M-$294.2M
Unrealized gain (loss) on marketable securities, net$148.0K$38.0K
Total comprehensive loss-$243.2M-$294.2M
Net loss per share attributable to common stockholders, basic-$2.86-$10.38
Net loss per share attributable to common stockholders, diluted-$2.86-$10.38
Weighted-average shares of common stock outstanding, basic85.0M shares28.3M shares
Weighted-average shares of common stock outstanding, diluted85.0M shares28.3M shares

Compare ALUMIS INC. with another company

Corporate structure

ALUMIS INC. sits at the top of its group. 3 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

Major holders of ALUMIS INC.

  • ALUMIS INC. South San Francisco, California
    • ACELYRIN, Inc. Subsidiary · Delaware, United States
    • WH2, LLC Subsidiary · Delaware, United States

Built from subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

What it owns

What ALUMIS INC. reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.

Property and equipment

ItemLatestA year beforeChange
Property and equipment, before depreciation$26.2M2 Dec 31, 2025$25.5M2 Dec 31, 2024+2.6%
Accumulated depreciation$8.0M2 Dec 31, 2025$4.6M2 Dec 31, 2024+75.3%
Property and equipment, net$18.2M2 Dec 31, 2025$21.0M2 Dec 31, 2024−13.2%
Operating-lease assets (leased space)$17.0M2 Dec 31, 2025$12.7M2 Dec 31, 2024+33.4%

Real estate and locations

ItemLatestA year beforeChange
Area of real estate22,000 sq ft2 Dec 31, 202455,000 sq ft2 Aug 31, 2022−60.0%

Investments

ItemLatestA year beforeChange
Cash and cash equivalents$89.7M2 Dec 31, 2025$169.5M2 Dec 31, 2024−47.1%
Marketable securities, current$218.8M2 Dec 31, 2025$118.7M2 Dec 31, 2024+84.3%
Debt securities available for sale$218.8M2 Dec 31, 2025$118.7M2 Dec 31, 2024+84.3%

Intangibles and goodwill

ItemLatestA year beforeChange
Indefinite-lived intangibles (excluding goodwill)$51.0M2 Dec 31, 2025

Properties, in its own words

Our principal executive offices are located in South San Francisco, California. We entered into the lease for our principal executive offices in August 2022, for approximately 55,000 square feet of combined office and laboratory space in South San Franscisco, which will expire in August 2033. In December 2024, we entered into a lease for approximately 22,000 square feet of additional office space in South San Francisco, California which will end in December 2026.

Upon the closing of the ACELYRIN Merger, the Company became the successor to ACELYRIN’s rights under ACELYRIN’s lease agreements that included approximately 10,012 square feet of office space in Southern California, which expires in August 2028, and approximately 22,365 square feet of office space in South San Francisco, California, which expires in October 2029. Both facilities have been subleased through the end of their lease terms.

The rest of Item 2

We believe our facilities are adequate and suitable for our current needs, and that should it be needed, suitable additional or alternative space will be available to accommodate our operations.

Item 2 of the 10-K filed Mar 19, 2026.5

Leadership

Who has led ALUMIS INC., and when. Pick a name to see everywhere that person has worked.

Board members and other officers (14)

Named in SEC Form D filings

People the company listed in its private-offering notices.

  • DirectorJames B. Tananbaum named Mar 11, 2024 to Jul 24, 202427
  • DirectorPatrick B. Machado named Jul 24, 202427
  • DirectorJulian Baker named Mar 11, 202428
  • DirectorRichard Gaster named Mar 11, 202428

Subsidiaries and ownership

Subsidiaries (Exhibit 21)

  • ACELYRIN, Inc. Delaware4
  • WH2, LLC Delaware4

The subsidiaries the company lists in Exhibit 21 of its annual report, as filed.

Former names

  • FL2021-001, Inc.Feb 25, 2021 to Mar 19, 20213

Timeline

  1. Sep 1, 20268-K Other events29
  2. Aug 13, 20268-K Results of operations30
  3. Aug 10, 20268-K Other events31
  4. Jul 2, 20268-K Shareholder vote32
  5. Jun 29, 20268-K Other events33
  6. May 14, 20268-K Results of operations34
  7. Mar 30, 20268-K Other events35
  8. Mar 19, 20268-K Results of operations36
  9. Jan 9, 20268-K Results of operations; Other events37
  10. Jan 6, 20268-K Other events38
  11. Jan 2, 20268-K Other events39
  12. Nov 13, 20258-K Results of operations40
  13. Jun 27, 2024New chief executive Martin Babler becomes CEO11

Calendar

Coming up

  1. Nov 12, 2026Reports results for the quarter ending Sep/2026 A year earlier it reported ($1.06) a share, on Nov 13, 2025.41

When it reported results

  1. Aug 13, 2026Reported quarterly or annual results30
  2. May 14, 2026Reported quarterly or annual results34
  3. Mar 19, 2026Reported quarterly or annual results36
  4. Jan 9, 2026Reported quarterly or annual results37
  5. Nov 13, 2025Reported quarterly or annual results40
  6. Aug 13, 2025Reported quarterly or annual results42
  7. May 14, 2025Reported quarterly or annual results43
  8. Mar 19, 2025Reported quarterly or annual results44

Drug trials and FDA: recently

  1. Jun 23, 2026Phase 2 trial completed Phase 2 trial of Envudeucitinib in SLE: primary completion Jun 23, 2026, no results posted yet (ClinicalTrials.gov NCT05966480).45

Upcoming dates from Nasdaq's calendar; past results from the company's 8-K filings (Item 2.02). Trials from ClinicalTrials.gov, as the sponsor registered them (expected dates are the sponsor's own and often move); approvals and advisory committee meetings from the FDA. The FDA does not publish its decision (PDUFA) dates. The full markets calendar

Filings

240 filings to the SEC since October 2021: 3 annual reports, 7 quarterly reports, 33 major events, 108 insider forms, 20 large holders, 2 private raises, 67 other. The latest 20:

  1. Sep 9, 20264 EDGAR
  2. Sep 1, 20268-K EDGAR
  3. Aug 17, 2026SCHEDULE 13D EDGAR
  4. Aug 13, 202610-Q EDGAR
  5. Aug 13, 20268-K EDGAR
  6. Aug 10, 20268-K EDGAR
  7. Aug 6, 2026SCHEDULE 13G EDGAR
  8. Aug 5, 20264 EDGAR
  9. Aug 5, 20264 EDGAR
  10. Aug 5, 20264 EDGAR
  11. Aug 5, 20264 EDGAR
  12. Aug 5, 20264 EDGAR
  13. Aug 5, 20264 EDGAR
  14. Jul 27, 2026SCHEDULE 13G EDGAR
  15. Jul 8, 20264 EDGAR
  16. Jul 6, 2026144 EDGAR
  17. Jul 2, 20264 EDGAR
  18. Jul 2, 20264 EDGAR
  19. Jul 2, 20264 EDGAR
  20. Jul 2, 20264 EDGAR

The 240 filings since October 2021 can be filtered by form type and year here when JavaScript is on.

Every filing from the last five years, summarized. The full record is on SEC EDGAR.

Insider trades

53 open-market trades by officers, directors and large owners since October 2021: 45 buys and 8 sales. Grants, option exercises and gifts are left out.

DateWhoTradeSharesPriceValueFiling
Sep 8, 2026AKKARAJU SRINIVASDirectorBuy546,581$10.63$5.8MForm 4
Sep 8, 2026AKKARAJU SRINIVASDirectorSale96,131$10.55$1.0MForm 4
Sep 4, 2026AKKARAJU SRINIVASDirectorBuy440,140$11.17$4.9MForm 4
Aug 3, 2026Pangali SanamChief Legal OfficerSale1,364$26.37$36.0KForm 4
Aug 3, 2026Bradley Mark ChristopherChief Development OfficerSale2,572$26.37$67.8KForm 4
Aug 3, 2026Drappa JornChief Medical OfficerSale2,447$26.37$64.5KForm 4
Aug 3, 2026Goldstein David MChief Scientific OfficerSale2,596$26.37$68.5KForm 4
Aug 3, 2026Schroer John R.Chief Financial OfficerSale3,282$26.37$86.5KForm 4
Aug 3, 2026Hardiman Roy C.Chief Business & Strategy OfcrSale2,692$26.37$71.0KForm 4
Jul 6, 2026Pangali SanamChief Legal OfficerSale5,000$28.00$140.0KForm 4
Jan 9, 2026AKKARAJU SRINIVASDirectorBuy588,235$17.00$10.0MForm 4
Jan 8, 2026Foresite Labs, LLC10% ownerBuy411,764$17.00$7.0MForm 4
Jan 8, 2026Foresite Labs Fund I, L.P.10% ownerBuy411,764$17.00$7.0MForm 4
Jan 8, 2026Tananbaum James B.DirectorBuy411,764$17.00$7.0MForm 4
Dec 5, 2025AKKARAJU SRINIVASDirectorBuy186,377$9.84$1.8MForm 4
Dec 4, 2025AKKARAJU SRINIVASDirectorBuy66,027$8.18$540.1KForm 4
Dec 3, 2025AKKARAJU SRINIVASDirectorBuy100,000$7.75$775.0KForm 4
Dec 2, 2025AKKARAJU SRINIVASDirectorBuy96,000$7.55$724.8KForm 4
Dec 1, 2025AKKARAJU SRINIVASDirectorBuy86,350$7.46$644.2KForm 4
Nov 28, 2025AKKARAJU SRINIVASDirectorBuy38,702$7.64$295.7KForm 4

All 53 trades can be filtered by person here when JavaScript is on.

From Forms 4 filed with the SEC.

Major holders

Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.

Executive pay

What the company paid its top executives, from the summary compensation table in its proxy statement. Total pay includes salary, bonus, stock and option awards and other pay, as the company valued them.

YearExecutiveAgeSalaryTotal pay
2025Martin BablerPresident, Chief Executive Officer, and Chairman of the Board61$680.8K$5.9M53
2025David M. Goldstein, Ph.D.Chief Scientific Officer60$526.4K$2.0M53
2025Jörn Drappa, M.D., Ph.D.Chief Medical Officer61$523.8K$2.0M53
2024Martin BablerPresident, Chief Executive Officer, and Chairman of the Board61$605.9K$10.7M53
2024David M. Goldstein, Ph.D.Chief Scientific Officer60$466.5K$3.2M53

Funding

Where the company's money came from, by calendar year: private offerings filed with the SEC, federal grants, loans, contracts and other assistance from USAspending.gov, and PPP loans from the SBA. Each bar links to the records below.

Money received by year$169.5M 2024–2024
Money received by yearMoney received by year, 2024–2024: $169.5M in all. Private raises (Form D) $169.5M.$0$50M$100M$150M$200M2024 · Private raises (Form D): $169.5M2024
Figures by year
YearPrivate raises (Form D)Total
2024$169.5M$169.5M

Private raises

Private offerings the company reported to the SEC on Form D. The amount is what the latest filing says was sold so far, charted in the year of the first sale. Covers filings since Oct 1, 2021.

  1. Jul 17, 2024Raised $40 million in a private offering of equity27 Form D: 1 investor so far Form D
  2. Mar 4, 2024Raised $129.5 million in a private offering of equity28 Form D: $259 million offered in all Form D

Held by these funds

The largest holders among investment managers' 13F reports for the quarter ending Jun 30, 2026, the top 25 of 100. Change is in shares since the quarter before.

FundSharesValueShare of the fundChange
AyurMaya Capital Management Company, LP15,139,707$426.0M100.0%No change
BlackRock, Inc.8,218,151$231.3M0.0%+1,047,283
Fmr LLC6,769,170$190.5M0.0%+5,795,388
Deep Track Capital, LP6,348,558$178.6M2.6%−424,037
Samsara Biocapital, LLC6,345,219$178.6M14.7%No change
Foresite Capital Management V, LLC5,896,995$165.9M45.8%No change
venBio Partners LLC4,528,408$127.4M24.5%No change
Foresite Capital Management VI LLC4,247,670$119.5M18.6%No change
Vanguard Capital Management LLC4,215,703$118.6M0.0%+183,437
Nextech Invest Ltd.3,540,998$99.6M4.7%No change
Cormorant Asset Management, LP3,285,596$92.5M4.7%−663,645
Saturn V Capital Management LP2,915,443$82.0M11.8%−286,632
Octagon Capital Advisors LP2,830,700$79.7M7.3%No change
Jupiter Topco LLC2,355,122$66.2M0.0%New
State Street Corp2,187,266$61.5M0.0%+385,454
Geode Capital Management, LLC2,168,517$61.0M0.0%+250,102
Mpm Bioimpact LLC2,019,020$56.8M3.5%−367,509
Baker Bros. Advisors LP2,012,500$56.6M0.3%No change
SR One Capital Management, LP1,959,896$55.2M5.3%No change
Invesco Ltd.1,173,518$33.0M0.0%−338,019
Novo Holdings A/s1,100,000$31.0M1.8%New
Principal Financial Group Inc1,068,060$30.1M0.0%+10,009
D. E. Shaw & Co., Inc.968,234$27.2M0.0%+396,105
UBS Group AG951,796$26.8M0.0%−2,103,069
Jpmorgan Chase & Co969,617$26.4M0.0%+108,042

13F reports cover disclosed long positions in U.S. stocks only.

SEC filer profile

How ALUMIS INC. is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.

  • Name on EDGARALUMIS INC.1
  • CIK0001847367
  • Employer ID (EIN)86-17711295
  • Filer statusNon-accelerated filer an emerging growth company; a smaller reporting company; not a shell company5
  • Incorporated inDelaware5
  • Fiscal year endsDecember 311
  • Industry code (SIC)2834 Pharmaceutical Preparations1
  • SEC reviewing officeOffice of Life Sciences, Division of Corporation Finance1
  • Business address280 East Grand Avenue, South San Francisco, CA 940801
  • Phone650-231-66251
  • Shares outstanding123,139,425 Voting Common Stock shares; 4,059,908 Nonvoting Common Stock shares as of Mar 12, 20265
  • Public float$183.2M as of Jun 30, 20255
  • AuditorPricewaterhouseCoopers LLP, San Jose, California PCAOB ID 238; no auditor attestation of internal control over financial reporting5
  • On EDGAR sinceFeb 25, 20211
  • Filings242 in all: 4 (87), 8-K (32), 3 (19), 425 (15), SCHEDULE 13D/A (10), CORRESP (8), 10-Q (7), UPLOAD (7)1
    All 41 form types

    D (4), EFFECT (4), S-8 (4), SC 13D (3), SCHEDULE 13G (3), 10-K (2), 424B3 (2), 424B5 (2), ARS (2), DEF 14A (2), DEFA14A (2), DRS (2), S-1/A (2), S-4 (2), SCHEDULE 13D (2), SEC STAFF LETTER (2), 10-K/A (1), 144 (1), 4/A (1), 424B4 (1), 5 (1), 8-A12B (1), 8-K/A (1), CERT (1), DRS/A (1), DRSLTR (1), FWP (1), S-1 (1), S-3 (1), S-3ASR (1), S-4/A (1), SC 13G (1), SCHEDULE 13G/A (1)

  • Latest filingsAnnual report (10-K) Mar 19, 2026
    Quarterly report (10-Q) Aug 13, 2026
    Proxy statement (DEF 14A) May 18, 2026
    Latest 8-K (8-K) Sep 1, 2026

Securities registered for trading

ClassSymbolExchange
Common Stock, $0.0001 Par Value per ShareALMSThe Nasdaq Global Select Market

From the cover page of the 10-K filed Mar 19, 2026 (Section 12(b) of the Exchange Act).5

Risk factors and legal proceedings

The risks ALUMIS INC. names in Item 1A of its 10-K filed Mar 19, 2026: 73 risks under these headings, as written.5

  • Results of Operations” and in our audited consolidated financial statements and the related notes included elsewhere in this Annual Report on Form 10-K. We cannot assure you that any of the events discussed below will not occur. These events could adversely impact our business, financial condition, results of operations and prospects. If that were to happen, the trading price of our common stock could decline, and you could lose all or part of your investment.
  • Risks Related to Our Financial Position and Need for Capital
  • We are a clinical stage biopharmaceutical company with a limited operating history and no products approved for commercial sale, and have incurred substantial losses since our inception and anticipate incurring substantial and increasing losses for the foreseeable future.
  • Enrollment and retention of participants in clinical trials is an expensive and time-consuming process and could be made more difficult or rendered impossible by multiple factors outside our control, including difficulties in identifying
  • patients, the availability of competitive products and significant competition for recruiting participants in clinical trials.
  • We will require substantial additional financing to achieve our goals, and failure to obtain additional capital when needed, or on acceptable terms to us, could cause us to delay, limit, reduce or terminate our product development or future commercialization efforts.
  • Risks Related to Product Candidate Development and Commercialization
  • Preclinical and clinical development involves a lengthy and expensive process, with an uncertain outcome, and results of earlier studies and trials may not be predictive of future trial results. We may incur additional costs or experience delays in completing, or ultimately be unable to complete, the development and commercialization of our current product candidates or any future product candidates.
  • Our clinical trials may reveal SAEs and AEs and may result in a safety or tolerability profile that could delay or prevent regulatory approval or market acceptance of envu, A-005 or any future product candidates.
  • Preliminary, “top-line” and interim data from our clinical trials that we announce or publish from time to time may change as more patient data become available or are subject to audit and verification procedures that could result in material changes in the final data.
  • We have conducted, are currently conducting, and may in the future conduct, clinical trials for current or future product candidates outside the United States, and the FDA and comparable foreign regulatory authorities may not accept data from such trials.
  • Even if we receive regulatory approval for our current or future product candidates in the United States, we may never receive regulatory approval to market outside of the United States.
The other 63 risks
  • The successful commercialization of our product candidates, if approved, will depend in part on the extent to which governmental authorities and health payors and insurers establish coverage, adequate reimbursement levels and favorable pricing policies. Failure to obtain or maintain coverage and adequate reimbursement for our product candidates could limit our ability to market those products and decrease our ability to generate revenue.
  • We face competition from entities that have made substantial investments into the rapid development of competitor treatments for immunological indications, including large and specialty pharmaceutical and biotechnology companies, many of which already have approved therapies in our current indications.
  • Risks Related to Our Business and Operations
  • We are subject to various risks related to the acquisition of ACELYRIN.
  • Our business is highly dependent on the success of our most advanced product candidate, envu, and we cannot guarantee that envu will successfully complete development, receive regulatory approval or be successfully commercialized. If we are unable to develop, receive regulatory approval for, and ultimately successfully commercialize our product candidates, or if we experience significant delays in doing so, our business will be materially harmed.
  • The regulatory approval processes of the FDA and comparable foreign authorities are lengthy, time consuming and inherently unpredictable, and if we are ultimately unable to obtain regulatory approval for our product candidates, our business will be substantially harmed.
  • Disruptions at the FDA and other government agencies or comparable foreign regulatory authorities caused by funding shortages, government shutdowns or global health concerns could hinder their ability to hire, retain or deploy key leadership and other personnel, prevent new or modified products from being developed, reviewed, approved or commercialized in a timely manner or at all, which could negatively impact our business.
  • If our product candidates, if approved, do not achieve broad market acceptance, the revenue that we generate from their sales will be limited.
  • We may expend our limited resources to pursue a particular product candidate in specific indications and fail to capitalize on product candidates or indications that may be more profitable or for which there is a greater likelihood of success.
  • We will need to grow our organization, and we may experience difficulties in managing our growth and expanding our operations, which could adversely affect our business.
  • We are dependent on the services of our management team and other clinical and scientific personnel, and if we are not able to retain these individuals or recruit additional management or clinical and scientific personnel, our business will suffer.
  • Our employees, independent contractors, consultants, commercial partners and vendors may engage in misconduct or other improper activities, including noncompliance with regulatory standards and requirements.
  • International trade policies, including tariffs, sanctions and trade barriers may adversely affect our business, financial condition, results of operations and growth prospects.
  • Our future growth may depend, in part, on our ability to operate in foreign markets, where we would be subject to additional regulatory burdens and other risks and uncertainties.
  • Our business entails a significant risk of product liability and our ability to obtain sufficient insurance coverage could adversely affect our business, financial condition, results of operations and prospects.
  • Our insurance policies are expensive and only protect us from some business risks, which will leave us exposed to significant uninsured liabilities.
  • We have engaged in, and may in the future engage in, strategic transactions, which could impact our liquidity, increase our expenses, dilute our stockholders and present significant distractions to our management.
  • Our ability to use our net operating loss carryforwards and certain other tax attributes to offset taxable income or taxes may be limited.
  • Recent and future changes to tax laws could materially adversely affect our company.
  • Our operations are predominantly concentrated in one location, and we or the third parties upon whom we depend may be adversely affected by a wildfire, earthquake or other natural disasters and our business continuity and disaster recovery plans may not adequately protect us from a serious disaster.
  • Our projections regarding the market opportunities for our product candidates may not be accurate, and the actual market for our products may be smaller than we estimate.
  • Our cash and cash equivalents may be exposed to failure of our banking institutions.
  • Public opinion and scrutiny of immunology treatments may impact public perception of our company and product candidates, or may adversely affect our ability to conduct our business and our business plans.
  • The future impairment of acquired in-process research and development (“IPR&D”) intangible assets related to the ACELYRIN Merger may negatively affect our results of operations and financial position.
  • Risks Related to Intellectual Property
  • If we are unable to obtain and maintain sufficient intellectual property protection for our product candidates and any future product candidates we may develop, or if the scope of the intellectual property protection obtained is not sufficiently broad, our competitors or other third parties could develop and commercialize products similar or identical to ours, and our ability to successfully develop and commercialize our product candidates may be adversely affected.
  • We cannot ensure that patent rights relating to inventions described and claimed in our or any current or future licensors and licensees pending patent applications will issue or that patents based on our or any current or future licensors and licensees patent applications will not be challenged and rendered invalid and/or unenforceable.
  • We may not be able to protect our intellectual property rights throughout the world.
  • Intellectual property rights do not necessarily address all potential threats to our competitive advantage.
  • We may not identify relevant third-party patents or may incorrectly interpret the relevance, scope or expiration of a third-party patent, which might adversely affect our ability to develop and market our product candidates.
  • We may be involved in lawsuits to protect or enforce our patents or other intellectual property, which could be expensive, time-consuming and unsuccessful.
  • We may become involved in third-party claims of intellectual property infringement, which may prevent or delay our product discovery and development efforts.
  • We may not be successful in obtaining or maintaining necessary rights to our product candidates through acquisitions and in-licenses.
  • We may become subject to claims challenging the inventorship or ownership of our or any current or future licensors’ patents and other intellectual property.
  • We have and may continue to form or seek collaborations or strategic alliances or enter into licensing arrangements in the future, and we may neither enter into, nor realize the benefits of, such alliances or licensing arrangements.
  • If we fail to comply with our obligations in the agreements under which we in-license or acquire development or commercialization rights to product candidates, or data from third parties, we could lose such rights that are important to our business.
  • We have entered into, and may in the future enter into, license agreements that subject us to certain rights retained by third parties.
  • Changes in patent law in the United States and other jurisdictions could diminish the value of patents in general, thereby impairing our ability to protect our product candidates.
  • Obtaining and maintaining patent protection depends on compliance with various procedural, document submission, fee payment and other requirements imposed by government patent agencies, and our patent protection could be reduced or eliminated as a result of noncompliance with these requirements.
  • Patent terms may be inadequate to protect our competitive position on products or product candidates for an adequate amount of time.
  • If we do not obtain patent term extension for our product candidates, our business may be materially harmed.
  • If we are unable to protect the confidentiality of our trade secrets, our business and competitive position would be harmed.
  • We may be subject to claims asserting that our employees, consultants or advisors have wrongfully used or disclosed alleged trade secrets of their current or former employers or claims asserting ownership of what we regard as our own intellectual property.
  • If our trademarks and trade names are not adequately protected, then we may not be able to build name recognition in our markets of interest and our business may be adversely affected.
  • Risks Related to Government Regulation
  • Even if we receive regulatory approval for our product candidates, we will be subject to ongoing regulatory obligations and continued regulatory review, which may result in significant additional expense. Additionally, our product candidates, if approved, could be subject to labeling and other restrictions and market withdrawal. We may also be subject to penalties if we fail to comply with regulatory requirements or experience unanticipated problems with our product candidates.
  • Recently enacted legislation, future legislation and other healthcare reform measures may increase the difficulty and cost for us to obtain regulatory approval for and commercialize our product candidates and may affect the prices we may set.
  • Our operations and relationships with healthcare providers, healthcare organizations and third-party payors will be subject to applicable anti-bribery, anti-kickback, fraud and abuse, transparency and other healthcare laws and regulations, which could expose us to, among other things, enforcement actions, criminal sanctions, civil penalties, contractual damages, reputational harm, administrative burdens and diminished profits and future earnings.
  • Governments outside the United States tend to impose strict price controls, which may adversely affect our revenue, if any.
  • We and the third parties with whom we work are subject to stringent and evolving U.S. and foreign laws, regulations, rules; contractual obligations; policies; and other obligations related to data privacy and security. Our (including the third parties with whom we work) actual or perceived failure to comply with such obligations could lead to regulatory investigations or actions; litigation; fines and penalties; disruptions of our business operations; reputational harm; loss of revenue or profits; and other adverse consequences for our business, results of operations and financial condition.
  • Risks Related to Our Reliance on Third Parties
  • We may have conflicts with any current or future licensors, licensees, collaborators or strategic partners that could delay or prevent the development or commercialization of our product candidates.
  • We have relied and expect to continue to rely on third parties to conduct our preclinical studies and clinical trials. If
  • those third parties do not perform as contractually required, fail to satisfy legal or regulatory requirements, miss expected deadlines or terminate the relationship, our development programs could be delayed, more costly or unsuccessful, and we may never be able to seek or obtain regulatory approval for or commercialize our product candidates.
  • We rely on third-party manufacturers and suppliers to supply our product candidates. The loss of our third-party manufacturers or suppliers, or their failure to comply with applicable regulatory requirements or to supply sufficient quantities at acceptable quality levels or prices, within acceptable timeframes, or at all, would materially and adversely affect our business.
  • We depend on limited source suppliers for certain raw materials used in our product candidates. If we are unable to source these supplies on a timely basis or establish redundancy in our manufacturing process or longer-term contracts with our CMOs, we will not be able to complete our clinical trials on time and the development of our product candidates may be delayed.
  • The operations of our suppliers, most of which are located outside of the United States, are subject to additional risks that are beyond our control and that could harm our business, financial condition, results of operations and prospects.
  • We may be exposed to significant currency exchange risk.
  • Risks Related to Ownership of Our Common Stock
  • An active and liquid trading market for our common stock may not develop, and you may not be able to resell your shares of common stock at or above the price you paid for them.
  • Our quarterly and annual operating results may fluctuate significantly or may fall below the expectations of investors or securities analysts or any guidance we may publicly provide, each of which may cause our stock price to fluctuate or decline.
  • Our stock price is likely to continue to be volatile, which could result in substantial losses for our investors.
  • Sales of a substantial number of shares of our common stock could cause our stock price to fall.
  • Our principal stockholders and management own a significant percentage of our common stock and will be able to control matters subject to stockholder approval.
  • We are an “emerging growth company” and a “smaller reporting company” and the reduced reporting requirements applicable to emerging growth companies and smaller reporting companies may make our common stock less attractive to investors.
  • Anti-takeover provisions in our charter documents and under Delaware law could prevent or delay an acquisition of us that may be beneficial to our stockholders and may prevent attempts by our stockholders to replace or remove our current management.
  • The exclusive forum provisions in our organizational documents may limit a stockholder’s ability to bring a claim in a judicial forum that it finds favorable for disputes with us or any of our directors, officers or employees, or the underwriters of any offering giving rise to such claim, which may discourage lawsuits with respect to such claims.
  • Our board of directors is authorized to issue and designate shares of our preferred stock without stockholder approval.

Legal proceedings

On November 15, 2023, a purported federal securities class action lawsuit was commenced in the United States District Court for the Central District of California. On February 15, 2024, the Court appointed joint lead plaintiffs and lead counsel. An amended complaint was filed on March 26, 2024 (Boukadoum v. Acelyrin, Inc. et al., No. 2:23-cv-09672-FMO-MAA), naming ACELYRIN and then-current and former executive officers and directors as defendants. The complaint alleges that the defendants violated the Exchange Act and Securities Act by misleading investors about the Phase 2b trial of izokibep in hidradenitis suppurativa. The original complaint was filed following ACELYRIN’s announcement of the week 16 results from the Part B portion of such Phase 2b trial. The amended complaint seeks damages

and an award of reasonable costs and expenses, including attorneys’ fees, expert fees and other costs, as well as such other and further relief as the court may deem just and proper. On May 3, 2024, the defendants filed their motion to dismiss the amended complaint, which was granted by the court, with leave to amend, in January 2026. On February 5 2026, the plaintiffs filed a second amended complaint, which seeks damages and an award of reasonable costs and expenses, as well as such other and further relief as the court may deem just and proper. On February 19, 2026, the defendants filed their motion to dismiss the second amended complaint, which remains pending. It is possible that additional suits will be filed, or allegations made by stockholders, with respect to these same or other matters and also naming us and or our officers and directors as defendants. This lawsuit and any other potential lawsuits are subject to inherent uncertainties, and the actual defense and disposition costs will depend upon many unknown factors. We could be forced to expend significant resources in the defense against this and any other related lawsuits and we may not prevail.

The opening of Item 3, Legal Proceedings.5

Sources

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