Zenas BioPharma (ZBIO) risk factors, FY2025 10-K

Zenas BioPharma's FY2025 10-K, filed Mar 16, 2026, lists 76 risk factors in 8 groups. Against the prior year's 77: 10 new, 11 dropped, 16 substantially reworded.

Risk factors listed
768 groups
New this year
10vs 77 last year
Dropped
11since the prior 10-K
Substantially reworded
16of those kept
Section length
47k wordsItem 1A

What the changes say

  • Zenas BioPharma faces a going concern doubt after reporting recurring operating losses through December 31, 2025., The company secured up to a $250.0 million term loan agreement with Pharmakon funds in March 2026, which requires significant cash servicing., A securities class action lawsuit was filed in April 2025 against the company, its directors, and IPO underwriters.

What changed since the prior 10-K

New

  • NewRisks Related to Our Financial Position and Need for Capital

    Our independent registered public accounting firm has expressed substantial doubt about our ability to continue as a going concern

    Our independent auditor expressed substantial doubt about our ability to continue as a going concern due to recurring operating losses.

  • NewRisks Related to Product Candidate Development and Commercialization

    AEs and SAEs may be deemed to be related to our product candidates. Such a determination may require longer and more extensive clinical development, or regulatory authorities may increase the amount of data and information required to approve, market or maintain approval of our product candidates

    Adverse events or serious adverse events deemed related to our product candidates could lead to suspended clinical trials and increased data requirements.

  • NewRisks Related to Our Intellectual Property

    Laws regarding exclusivity protections are complex and continue to be interpreted by the FDA. Any new policies or processes adopted by the FDA could have a material adverse effect on the future commercial prospects for our product candidates

    Changes to FDA exclusivity protections, such as the 12-year BLA or 5-year NCE periods, could accelerate generic or biosimilar competition.

  • NewRisks Related to Government Regulation

    Healthcare reform efforts have been and may continue to be subject to scrutiny, legal challenge and subsequent amendment, creating further uncertainty

    Healthcare reforms, Medicare payment reductions through 2032, and potential branded drug tariffs could increase our costs and pressure drug prices.

  • NewRisks Related to Ownership of Our Common Stock

    A significant portion of our total outstanding shares may be sold into the market, which could cause the market price of our common stock to decline significantly, even if our business is doing well

    Substantial sales of our 54,485,518 outstanding common shares, including 6,311,030 registered PIPE shares, could depress our stock price.

  • NewRisks Related to Ownership of Our Common Stock

    Additionally, holders of an aggregate of 13,046,934 shares of our common stock have rights, subject to conditions, to require us to file registration statements covering their shares or to include their shares in registration statements that we may file for ourselves or other stockholders

    Registration rights held by stockholders, including InnoCare shares subject to restrictions until October 7, 2026, could lead to future stock sales.

  • NewRisks Related to Our Indebtedness

    Our indebtedness resulting from our Loan Agreement or future indebtedness could adversely affect our financial condition or restrict our future operations

    Our March 14, 2026 Loan Agreement with Credit PLC and Pharmakon funds provides up to a $250.0 million Term Loan maturing in March 2031.

  • NewRisks Related to Our Indebtedness

    Servicing our Loan Agreement requires a significant amount of cash, and we may not have sufficient cash flow to pay our debt

    Servicing our $250.0 million Term Loan requires significant cash that our operations will not generate in the foreseeable future.

  • NewRisks Related to Our Indebtedness

    If we fail to maintain an effective system of internal control over financial reporting in the future, we may not be able to accurately report our financial condition, results of operations or cash flows, which may adversely affect investor confidence in us and, as a result, the value of our common stock

    Failure to maintain effective internal control over financial reporting under Section 404 of the Sarbanes-Oxley Act could harm our stock value.

  • NewRisks Related to Our Indebtedness

    Our ability to use our net operating loss carryforwards and other tax attributes to offset future taxable income may be limited

    Our ability to use net operating loss carryforwards and tax credits may be limited if we undergo an ownership change under Sections 382 and 383.

Dropped

  • DroppedRisks Related to Product Candidate Development and Commercialization

    approval. Even if side effects do not preclude the product candidate from obtaining or maintaining marketing approval, undesirable side effects may inhibit market acceptance

  • DroppedRisks Related to Product Candidate Development and Commercialization

    We face potential competition from different sources that have made substantial investments into the rapid development of novel treatments for immunological indications, including large and specialty pharmaceutical and biotechnology companies, many of which already have approved therapies in our current indications

  • DroppedRisks Related to Our Business and Operations

    Recent and future changes to tax laws could adversely affect our company

  • DroppedRisks Related to Our Business and Operations

    about us from public sources, data brokers or other means that reveals competitively sensitive details about our organization and could be used against us

  • DroppedRisks Related to Our Intellectual Property

    development of the relevant program or product candidate, which could adversely affect our business, financial condition, results of operations, and prospects

  • DroppedRisks Related to Our Intellectual Property

    If competitors are able to obtain regulatory approval for biosimilars referencing our product candidates, our product candidates may become subject to competition from such biosimilars, with the attendant competitive pressure and consequences

  • DroppedRisks Related to Government Regulation

    their regular inspections, reviews, or other regulatory activities, it could significantly impact the ability of the FDA or other regulatory authorities to timely review and process our regulatory submissions, which could have a material adverse effect on our business

    REMS requirements

  • DroppedRisks Related to Government Regulation

    affecting Medicare, Medicaid or other publicly funded or subsidized health programs that may be implemented and/or any significant taxes or fees that may be imposed on us could have an adverse impact on our results of operations

  • DroppedRisks Related to Government Regulation

    of such information. Any of the foregoing could adversely affect our business, financial condition, results of operations and prospects

    Competition from large pharmaceutical and biotechnology companies

  • DroppedRisks Related to Our Reliance on Third Parties

    operating history and we could experience disruptions in our supply chain in the future as a result of such reliance or otherwise

  • DroppedRisks Related to Ownership of Our Common Stock

    Failure to establish and maintain effective internal control over financial reporting could adversely affect our business and if investors lose confidence in the accuracy and completeness of our financial reports, the market price of our common stock could be negatively affected

Reworded

  • 99% rewrittenRisks Related to Our Indebtedness

    Securities class action litigation imposes costs on our business

    Added specific disclosure of the April 2025 putative securities class action filed against the company, directors, officers, and IPO underwriters.

    Was: We could be subject to securities class action litigation

  • 84% rewrittenRisks Related to Government Regulation

    Recently enacted legislation, future legislation and other healthcare reform measures may increase the difficulty and cost for us to obtain marketing approval for and commercialize our product candidates and may affect the prices we may set

    Removed specific historical references to the March 2010 enactment of the Affordable Care Act.

  • 79% rewrittenRisks Related to Our Intellectual Property

    If approved, our product candidates may face competition from biosimilar or generic products approved through abbreviated regulatory pathways

    Added specific details on the BPCIA granting a 12-year non-patent data exclusivity period and a four-year application delay for biosimilars.

    Was: If approved, our product candidates that are regulated as biological products (“biologics”), may face competition from biosimilars approved through an abbreviated regulatory pathway

  • 79% rewrittenRisks Related to Product Candidate Development and Commercialization

    Risks associated with the in-licensing or acquisition of product candidates could cause substantial delays in the preclinical and clinical development of our product candidates

    Added InnoCare alongside Xencor as a licensing partner whose prior research reliability we depend on.

  • 69% rewrittenRisks Related to Our Business and Operations

    In the ordinary course of our business, we, and the third parties upon which we rely, process sensitive data and as a result, we and the third parties upon which we rely face a variety of evolving threats which could cause security incidents

    Retained extensive list of cybersecurity threats without substantive textual changes.

  • 64% rewrittenRisks Related to Our Financial Position and Need for Capital

    Raising additional capital may cause dilution to our stockholders, impose restrictions on our operations or require us to relinquish rights to our product candidates

    Added specific disclosure of the October 2025 private placement of 6,311,030 common shares for $111.8 million in net proceeds.

    Was: Raising additional capital may cause dilution to our stockholders imposing restrictions on our operations or require us to relinquish rights to our product candidates

  • 56% rewrittenRisks Related to Our Intellectual Property

    We may not obtain or maintain necessary rights to our product candidates through acquisitions and in- licenses

    Retained general description of competition for acquiring third-party intellectual property without substantive textual changes.

  • 52% rewrittenRisks Related to Product Candidate Development and Commercialization

    Any significant adverse events or undesirable side effects caused by our product candidates may delay or prevent regulatory approval or market acceptance of our product candidates, or result in significant negative consequences following marketing approval, if any

    Removed minor punctuation differences regarding adverse events in obexelimab trials.

  • 49% rewrittenRisks Related to Government Regulation

    In addition to data privacy and security laws, we are also bound by other contractual obligations related to data privacy and security, and our efforts to comply with such obligations may not be successful

  • 45% rewrittenRisks Related to Government Regulation

    Significant political, trade, regulatory developments, including changes in relations between the U.S. and China, and other circumstances beyond our control, may adversely impact our business, financial condition, and results of operations

  • 41% rewrittenRisks Related to Our Financial Position and Need for Capital

    We will require substantial additional financing to achieve our goals, and failure to obtain additional capital when needed, or on acceptable terms, would cause us to delay, limit, reduce or terminate our product development efforts

  • 41% rewrittenRisks Related to Ownership of Our Common Stock

    The market price of our common stock may be volatile, which could result in substantial losses for investors

  • 34% rewrittenRisks Related to Product Candidate Development and Commercialization

    Although obexelimab has been granted orphan drug designation by the FDA for IgG4-RD, such designation does not guarantee that any regulatory authority will accept fewer trials, accelerate regulatory review of, or ultimately approve obexelimab for IgG4-RD

  • 31% rewrittenRisks Related to Our Business and Operations

    Strategic transactions could impact our liquidity, increase our expenses and present significant distractions to our management

  • 24% rewrittenRisks Related to Our Financial Position and Need for Capital

    We are a clinical stage biopharma company with a limited operating history and no products approved for commercial sale; we have incurred substantial losses since our inception, and we anticipate incurring substantial and increasing losses for the foreseeable future

  • 22% rewrittenRisks Related to Our Reliance on Third Parties

    We may have conflicts with our current or future licensors or collaborators that could delay or prevent the development or commercialization of our product candidates

All 76 risk factors

Headings as the filing states them, in filing order.

Risks Related to Our Financial Position and Need for Capital

  1. 01We are a clinical stage biopharma company with a limited operating history and no products approved for commercial sale; we have incurred substantial losses since our inception, and we anticipate incurring substantial and increasing losses for the foreseeable future24% rewritten
  2. 02We will require substantial additional financing to achieve our goals, and failure to obtain additional capital when needed, or on acceptable terms, would cause us to delay, limit, reduce or terminate our product development efforts41% rewritten
  3. 03Our independent registered public accounting firm has expressed substantial doubt about our ability to continue as a going concernNew
  4. 04Raising additional capital may cause dilution to our stockholders, impose restrictions on our operations or require us to relinquish rights to our product candidates64% rewritten

Risks Related to Product Candidate Development and Commercialization

  1. 05When we conduct preclinical and clinical research in collaboration with other academic, pharmaceutical and biotechnology entities, we risk additional delays due to the frequent need to align on decisions
  2. 06Delays or difficulties in the enrollment and dosing of patients in clinical trials, delay or prevent receipt of necessary regulatory approvals
  3. 07Any significant adverse events or undesirable side effects caused by our product candidates may delay or prevent regulatory approval or market acceptance of our product candidates, or result in significant negative consequences following marketing approval, if any52% rewritten
  4. 08AEs and SAEs may be deemed to be related to our product candidates. Such a determination may require longer and more extensive clinical development, or regulatory authorities may increase the amount of data and information required to approve, market or maintain approval of our product candidatesNew
  5. 09Risks associated with the in-licensing or acquisition of product candidates could cause substantial delays in the preclinical and clinical development of our product candidates79% rewritten
  6. 10Interim , initial, “top-line” and preliminary data from our clinical trials that we announce or publish from time to time are subject to audit and verification procedures and may differ materially from final data as more patient data become available
  7. 11Our clinical trials of our product candidates, even if successfully completed, may not be sufficient for marketing approval for the applicable indication
  8. 12Although obexelimab has been granted orphan drug designation by the FDA for IgG4-RD, such designation does not guarantee that any regulatory authority will accept fewer trials, accelerate regulatory review of, or ultimately approve obexelimab for IgG4-RD34% rewritten
  9. 13We may not realize the benefits of our current or future collaborations or licensing arrangements and may be unsuccessful in consummating future partnerships
  10. 14Even if we complete the necessary clinical trials, we cannot predict when, or if, we will obtain regulatory approval to commercialize any product candidate in the U.S. or any other jurisdiction, and any such approval may be for a more narrow indication than we seek
  11. 15We 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
  12. 16We are currently conducting, and may in the future conduct, clinical trials for current or future product candidates outside the U.S., and the FDA and comparable foreign regulatory authorities may not accept data from such trials
  13. 17Even if we receive marketing approval for our current or future product candidates in the U.S., we may never receive regulatory approval to market outside of the U.S
  14. 18We may not be able to obtain or maintain orphan drug designations for certain of our product candidates, and we may be unable to maintain the benefits associated with orphan drug designation, including the potential for market exclusivity
  15. 19We may seek accelerated approval for some of our product candidates but may not be able to obtain it as the sufficiency of our clinical trial results for accelerated approval are subject to the FDA’s discretion

Risks Related to Our Business and Operations

  1. 20Our business depends entirely on the success of our product candidates, and we may fail to successfully develop, receive regulatory approval for, or successfully commercialize any or all of our product candidates
  2. 21We have never submitted a BLA or NDA for our product candidates to the FDA, or a similar marketing application to a comparable foreign regulatory authority, and our current or any future product candidates may not be successful in clinical trials or receive regulatory approval
  3. 22We are dependent on the services of our senior management 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
  4. 23We 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
  5. 24Revenue from our product candidates, if approved, will be limited if the product does not achieve broad market acceptance
  6. 25Misconduct or other improper actions, including noncompliance with regulatory standards and requirements, by our employees, independent contractors, consultants, commercial partners and vendors exposes us to potential noncompliance with regulatory standards and requirements
  7. 26Commercial opportunities for product candidates and forecasts of market growth may prove to be smaller than we believe, and even if the markets in which we compete achieve the forecasted growth, our business may not grow at similar rates, or at all
  8. 27Our 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
  9. 28Strategic transactions could impact our liquidity, increase our expenses and present significant distractions to our management31% rewritten
  10. 29In the ordinary course of our business, we, and the third parties upon which we rely, process sensitive data and as a result, we and the third parties upon which we rely face a variety of evolving threats which could cause security incidents69% rewritten
  11. 30Our 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
  12. 31Public opinion and scrutiny of I&I 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

Risks Related to Our Intellectual Property

  1. 32We rely upon a combination of patents, know-how and confidentiality agreements to protect the intellectual property related to our product candidates and to prevent third parties from copying and surpassing our achievements, thus eroding our competitive position in our market
  2. 33We have in-licensed patent portfolios, but have no solely owned issued patents relating to our product candidates
  3. 34We may not obtain or maintain necessary rights to our product candidates through acquisitions and in- licenses56% rewritten
  4. 35Patent rights relating to inventions described and claimed in our or our licensors’ pending patent applications may not issue and patents based on our or our licensors’ patent applications could be challenged and rendered invalid and/or unenforceable
  5. 36We may not be able to protect our intellectual property rights throughout the world
  6. 37Intellectual property rights do not necessarily address all potential threats to our competitive advantage
  7. 38We may be involved in lawsuits to protect or enforce our patents or other intellectual property, which could be expensive, time consuming and unsuccessful
  8. 39Changes in patent law in the U.S. and other jurisdictions could diminish the value of patents in general, thereby impairing our ability to protect our product candidates
  9. 40We may become subject to claims challenging the inventorship or ownership of our or our licensors’ patents and other intellectual property
  10. 41Patent terms may be inadequate to protect our competitive position on products or product candidates for an adequate amount of time
  11. 42Obtaining 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
  12. 43If we do not obtain patent term extension for our product candidates, our business may be materially harmed
  13. 44If approved, our product candidates may face competition from biosimilar or generic products approved through abbreviated regulatory pathways79% rewritten
  14. 45Laws regarding exclusivity protections are complex and continue to be interpreted by the FDA. Any new policies or processes adopted by the FDA could have a material adverse effect on the future commercial prospects for our product candidatesNew
  15. 46If we are unable to protect the confidentiality of our trade secrets, our business and competitive position would be harmed
  16. 47If 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
  17. 48We 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

Risks Related to Government Regulation

  1. 49Recently enacted legislation, future legislation and other healthcare reform measures may increase the difficulty and cost for us to obtain marketing approval for and commercialize our product candidates and may affect the prices we may set84% rewritten
  2. 50Healthcare reform efforts have been and may continue to be subject to scrutiny, legal challenge and subsequent amendment, creating further uncertaintyNew
  3. 51If we fail to comply with healthcare and other regulations, we could face substantial penalties and our business, operations and financial condition could be adversely affected
  4. 52Governments outside the U.S. tend to impose strict price controls, which may adversely affect our revenue, if any
  5. 53In addition to data privacy and security laws, we are also bound by other contractual obligations related to data privacy and security, and our efforts to comply with such obligations may not be successful49% rewritten
  6. 54Significant political, trade, regulatory developments, including changes in relations between the U.S. and China, and other circumstances beyond our control, may adversely impact our business, financial condition, and results of operations45% rewritten

Risks Related to Our Reliance on Third Parties

  1. 55We may have conflicts with our current or future licensors or collaborators that could delay or prevent the development or commercialization of our product candidates22% rewritten

Risks Related to Ownership of Our Common Stock

  1. 56An active and liquid trading market for our common stock may not be sustained
  2. 57The market price of our common stock may be volatile, which could result in substantial losses for investors41% rewritten
  3. 58A significant portion of our total outstanding shares may be sold into the market, which could cause the market price of our common stock to decline significantly, even if our business is doing wellNew
  4. 59Additionally, holders of an aggregate of 13,046,934 shares of our common stock have rights, subject to conditions, to require us to file registration statements covering their shares or to include their shares in registration statements that we may file for ourselves or other stockholdersNew
  5. 60Insiders have substantial influence over us, which could limit other stockholders’ ability to affect the outcome of key transactions, including a change of control
  6. 61Because we do not anticipate paying any cash dividends on our common stock in the foreseeable future, capital appreciation, if any, will be investors’ sole source of gain
  7. 62We are an “emerging growth company,” and the reduced disclosure requirements applicable to emerging growth companies may make our common stock less attractive to investors
  8. 63(ii) no longer qualify as an emerging growth company. Therefore, the reported results of operations contained in our financial statements may not be directly comparable to those of other public companies
  9. 64These provisions, alone or together, could delay or prevent hostile takeovers and changes in control or changes in our management. These provisions could also limit the price that investors might be willing to pay in the future for shares of our common stock, thereby depressing the market price of our common stock
  10. 65Our Restated Charter designates specific courts as the sole and exclusive forum for certain claims or causes of action that may be brought by our stockholders, which could discourage lawsuits against us and our directors and officers

Risks Related to Our Indebtedness

  1. 66Our indebtedness resulting from our Loan Agreement or future indebtedness could adversely affect our financial condition or restrict our future operationsNew
  2. 67Servicing our Loan Agreement requires a significant amount of cash, and we may not have sufficient cash flow to pay our debtNew
  3. 68Unstable economic and market conditions may have serious adverse consequences on our business, financial condition and stock price
  4. 69If securities or industry analysts cease publishing research or reports about our business, or if they publish inaccurate or unfavorable research about our business, our stock price and trading volume could decline
  5. 70We have incurred, and will continue to incur, increased costs as a result of operating as a public company, and our management will continue to be required to devote substantial time to new compliance initiatives and corporate governance practices
  6. 71If we fail to maintain an effective system of internal control over financial reporting in the future, we may not be able to accurately report our financial condition, results of operations or cash flows, which may adversely affect investor confidence in us and, as a result, the value of our common stockNew
  7. 72Our disclosure controls and procedures may not prevent or detect all errors or acts of fraud
  8. 73Our insurance policies are expensive and only protect us from some business risks, which will leave us exposed to significant uninsured liabilities
  9. 74Securities class action litigation imposes costs on our business 99% rewritten
  10. 75Our ability to use our net operating loss carryforwards and other tax attributes to offset future taxable income may be limitedNew
  11. 76Changes in tax rates, the adoption of new tax legislation or other exposure to tax liabilities, could harm our business

Other Zenas BioPharma 10-Ks

  • FY2024 10-K risk factors
    77 risks

    Zenas BioPharma faces significant risks typical of clinical-stage biotechs without approved products or revenue.

    Filed Mar 11, 2025

About this page

The headings are the filing's own. The one-line readings and the overview are automated and can be wrong: read Item 1A of the 10-K for the exact wording.