What the changes say
- Funding pressure remains central: Seres has $45.8 million cash, expects funding after Q3 2026, and discloses substantial going-concern doubt.
- After selling VOWST and reducing operations, excess leases and possible impairment charges could drain cash needed for SER-155.
- Leadership changed substantially, with an interim CEO, new President, and new COO effective March 2, 2026.
- New risks cover FDA disruption, investigator-sponsored SER-155 trials, patent enforcement, privacy, and AI regulation.
What changed since the prior 10-K
New
- NewRisks Related to the Discovery, Development and Regulatory Approval of Our Product Candidates
our business prospects. Further, disclosure of interim data by us or by our competitors could result in volatility in the price of our common stock
Interim or competitor clinical data may be misinterpreted, differ from final results, or trigger stock volatility and damage product approval prospects.
- NewRisks Related to the Discovery, Development and Regulatory Approval of Our Product Candidates
a major contribution to patient care. Orphan drug designation neither shortens the development time or regulatory review time nor gives the drug any advantage in the regulatory review or approval process
FDA and other agency funding, staffing, leadership, policy, or user-fee disruptions could delay or prevent product approvals and commercialization.
- NewRisks Related to our Dependence on Third Parties and Manufacturing
Evaluation of our product candidates in investigator-sponsored clinical trials (ISTs) may expose us to additional risks that could impair the development of our product candidates
The Memorial Sloan Kettering investigator-sponsored SER-155 trial and future independent trials may face delays, compliance failures, unusable data, safety issues, or liability.
- NewRisks Related to Our Intellectual Property
and time-consuming process with uncertain outcomes. Accordingly, we may choose not to seek patent protection in certain countries, and we will not have the benefit of patent protection in such countries
Weaknesses in obtaining or enforcing patents internationally could let competitors copy or compete with Seres product candidates.
- NewRisks Related to Our Operations
We have significant excess leased space that may adversely affect our financial condition and results of operations
Excess leased office and laboratory space after the VOWST sale and cost reductions creates unavoidable rental payments and difficult subleasing decisions.
- NewRisks Related to Our Operations
In addition, we may be required to recognize impairment charges with respect to right-of-use assets associated with leased properties that are no longer being fully utilized. Any such impairment charges could have a material adverse effect on our results of operations and financial condition
Unused leased properties may generate impairment charges and reduce liquidity available for SER-155, pipeline programs, clinical trials, and research.
- NewRisks Related to Our Operations
between and among countries and regions in which we operate, it could affect the manner in which we operate our business, the geographical location or segregation of our relevant systems and operations, and could adversely affect our financial results
Inconsistent and evolving privacy, security, and other legal requirements across jurisdictions could increase costs, liability, reputational damage, and operating complexity.
- NewRisks Related to Our Operations
Our business may be affected by the evolving regulatory framework for AI Technologies
Rapidly changing AI laws and interpretations could restrict Seres’s AI use, require costly jurisdiction-specific changes, or reduce product and business performance.
Reworded
- 75% rewrittenRisks Related to Our Financial Position and Need for Additional Capital
We have identified conditions and events that raise substantial doubt regarding our ability to continue as a going concern
The expected funding shortfall moved from the first quarter of 2026 to after Q3 2026; $45.8 million cash and partnership-financing difficulty are now highlighted.
- 71% rewrittenRisks Related to Our Product Candidates and Other Legal Matters
Current and future legislation or regulation may increase the difficulty and cost for us to obtain marketing approval of and commercialize our product candidates and may adversely affect the prices we may obtain
The update emphasizes executive orders, stricter coverage criteria, additional pricing pressure, and uncertainty over how healthcare reforms will be applied.
Was: Recently enacted and future legislation may increase the difficulty and cost for us to obtain marketing approval of and commercialize our product candidates and affect the prices we may obtain
- 67% rewrittenRisks Related to Our Common Stock
We have in the past and may again in the future receive a notice of the failure to satisfy a continued listing rule from Nasdaq
Seres says it regained Nasdaq compliance but could face delisting without a compliance period after a recent reverse stock split.
Was: We have received a notice of the failure to satisfy a continued listing rule from Nasdaq
- 66% rewrittenRisks Related to Our Operations
Foreign acquisitions involve unique risks in addition to those mentioned above, including those related to integration of operations across different cultures and languages, currency risks and the particular economic, political and regulatory risks associated with specific countries
The risk now expressly covers strategic alternatives and warns transactions may fail to achieve intended benefits or harm business and financial condition.
- 59% rewrittenRisks Related to Our Operations
Our future success depends on our ability to retain key executives and to attract, retain and motivate qualified personnel
The update reflects March 2, 2026 leadership changes, including Richard Kender becoming Interim CEO and Matthew Henn and Kelly Brady taking expanded roles.
- 48% rewrittenRisks Related to Our Product Candidates and Other Legal Matters
a new Patient-Centered Outcomes Research Institute to oversee, identify priorities in and conduct comparative clinical effectiveness research, along with funding for such research
The ACA is now stated to remain in effect after the Supreme Court challenge, while the Medicare sequestration discussion remains largely unchanged.
- 48% rewrittenRisks Related to the Discovery, Development and Regulatory Approval of Our Product Candidates
Interim “top-line” and preliminary data from our clinical trials that we announce or publish from time to time may change as more patient data become available and are subject to audit and verification procedures that could result in material changes in the final data
No substantive change: interim and preliminary clinical data remain subject to later review, verification, and potentially different conclusions.
- 41% rewrittenRisks Related to Our Financial Position and Need for Additional Capital
We are a clinical-stage company and have incurred significant losses since our inception. We expect to incur losses for the foreseeable future and may never achieve or maintain profitability
2025 operating loss fell to $94.0 million; cash was $45.8 million, accumulated deficit $972.4 million, and government research grants were added as financing.
- 39% rewrittenRisks Related to the Discovery, Development and Regulatory Approval of Our Product Candidates
We may seek orphan drug designation for some of our product candidates but may not be able to obtain it
- 38% rewrittenRisks Related to Our Financial Position and Need for Additional Capital
The total amount of the Milestone Payments we may receive from the Transaction is subject to various risks and uncertainties
Was: The total amount of the Second Installment Payment and Milestone Payments we may receive from the Transaction, and the amounts payable or due under the Profit Sharing Payments, are subject to various risks and uncertainties
- 34% rewrittenRisks Related to Our Operations
Actual or perceived failures to comply with applicable data protection, privacy and security laws, regulations, standards and other requirements could adversely affect our business, results of operations, and financial condition
- 23% rewrittenRisks Related to Our Financial Position and Need for Additional Capital
the extent to which we acquire or invest in businesses, products and technologies, including entering into licensing or collaboration arrangements for product candidates
- 22% rewrittenRisks Related to the Discovery, Development and Regulatory Approval of Our Product Candidates
have the product removed from the market after obtaining marketing approval
- 21% rewrittenRisks Related to Our Operations
Our ability to use our net operating loss carryforwards and research and development credits to offset future taxable income or income tax liabilities, respectively, may be subject to certain limitations
Was: Our ability to use our net operating loss carryforwards and research and development credits to offset future taxable income or income tax liabilities may be subject to certain limitations
All 82 risk factors
Headings as the filing states them, in filing order.
Risks Related to Our Financial Position and Need for Additional Capital
- 01We have identified conditions and events that raise substantial doubt regarding our ability to continue as a going concern75% rewritten
- 02the extent to which we acquire or invest in businesses, products and technologies, including entering into licensing or collaboration arrangements for product candidates23% rewritten
- 03We are a clinical-stage company and have incurred significant losses since our inception. We expect to incur losses for the foreseeable future and may never achieve or maintain profitability41% rewritten
- 04experience any delays or encounter any issues with any of the above, including but not limited to failed studies, complex results, safety issues or other regulatory challenges
- 05Because of the numerous risks and uncertainties associated with pharmaceutical product and biological development, we are unable to accurately predict the timing or amount of increased expenses or when, or if, we will be able to achieve profitability
- 06Our limited operating history may make it difficult to evaluate the success of our business to date and to assess our future viability
- 07The total amount of the Milestone Payments we may receive from the Transaction is subject to various risks and uncertainties38% rewritten
- 08We may not be able to realize the anticipated benefits of the Transaction, and we may face new challenges as a smaller, less diversified company
- 09We have broad discretion as to the use of the proceeds from the Transaction, and may not use the proceeds effectively
Risks Related to the Discovery, Development and Regulatory Approval of Our Product Candidates
- 10We are early in our development efforts of our product candidates and may not be successful in our efforts to use our reverse translational platform to build a pipeline of product candidates and develop additional marketable drugs
- 11maintaining and growing an organization of scientists and business people who can develop and commercialize our product candidates and technology
- 12Our product candidates are based on live biotherapeutics, which is a novel approach to therapeutic intervention
- 13Clinical drug development involves a risky, lengthy and expensive process, with an uncertain outcome. We may incur additional costs or experience delays in completing, or ultimately be unable to complete, the development and potential future commercialization of our product candidates
- 14regarding trials managed by any current or future collaborators, our collaborators may face any of the above issues, and may conduct clinical trials in ways they view as advantageous to them but potentially suboptimal for us
- 15have the product removed from the market after obtaining marketing approval22% rewritten
- 16Delays or difficulties in the enrollment of patients in clinical trials, could result in our receipt of necessary regulatory approvals being delayed or prevented
- 17Interim “top-line” and preliminary data from our clinical trials that we announce or publish from time to time may change as more patient data become available and are subject to audit and verification procedures that could result in material changes in the final data48% rewritten
- 18our business prospects. Further, disclosure of interim data by us or by our competitors could result in volatility in the price of our common stockNew
- 19If we are not able to obtain, or if there are delays in obtaining, required regulatory approvals, we or any collaborators will not be able to commercialize our product candidates or will not be able to do so as soon as anticipated, and our ability to generate revenue will be materially impaired
- 20The development of therapeutic products targeting the underlying biology of the human microbiome is an emerging field, and it is possible that the FDA and other regulatory authorities could issue regulations or new policies in the future that could adversely affect our live biotherapeutic candidates
- 21A Fast Track designation by the FDA may not actually lead to a faster development or regulatory review or approval process
- 22A Breakthrough Therapy, or other similar designations by the FDA for our product candidates may not lead to a faster development, regulatory review or approval process, and it does not increase the likelihood that our product candidates will receive marketing approval
- 23Product developers that benefit from PRIME designation may be eligible for accelerated assessment (in 150 days instead of 210 days), which may be granted for medicinal products of major interest from a public health perspective or that target an unmet medical need, but this is not guaranteed
- 24We may seek orphan drug designation for some of our product candidates but may not be able to obtain it39% rewritten
- 25a major contribution to patient care. Orphan drug designation neither shortens the development time or regulatory review time nor gives the drug any advantage in the regulatory review or approval processNew
Risks Related to our Dependence on Third Parties and Manufacturing
- 26We expect to continue to rely on third parties, such as CROs, clinical data management organizations, medical institutions and clinical investigators, to conduct and manage our clinical trials
- 27termination or nonrenewal of agreements by third-party manufacturers at times that are costly or inconvenient for us
- 28Evaluation of our product candidates in investigator-sponsored clinical trials (ISTs) may expose us to additional risks that could impair the development of our product candidatesNew
- 29We have limited experience manufacturing our product candidates commercially, and we cannot assure you that we can manufacture our product candidates in compliance with regulations at a cost or in quantities necessary to make them commercially viable
Risks Related to Our Product Candidates and Other Legal Matters
- 30Our product candidates may fail to achieve the degree of market acceptance by physicians, patients, hospitals, third-party payors and others in the medical community necessary for commercial success
- 31If we are unable to establish effective sales, marketing and distribution capabilities or enter into agreements with third parties with such capabilities, we may not be successful in commercializing any of our product candidates if and when they are approved
- 32inability to obtain sufficient coverage and reimbursement from third-party payors and governmental agencies
- 33We face substantial competition, which may result in others discovering, developing or commercializing competing products before or more successfully than we do
- 34These third parties compete with us in recruiting and retaining qualified scientific, sales and marketing and management personnel, establishing clinical trial sites and patient registration for clinical trials, as well as in acquiring technologies complementary to, or necessary for, our programs
- 35Even if we are able to commercialize any of our product candidates, if approved, the products may become subject to unfavorable pricing regulations or third-party coverage and reimbursement policies, any of which would harm our business
- 36Product liability lawsuits against us could cause us to incur substantial liabilities and limit commercialization of any products that we may develop
- 37the inability to commercialize products that we develop, if any
- 38We may face competition from biosimilars, which may have a material adverse impact on the future commercial prospects of our product candidates
- 39Failure to obtain marketing approval in international jurisdictions would prevent our product candidates from being marketed abroad
- 40Any product candidate for which we obtain marketing approval will remain subject to significant post-marketing regulatory requirements and oversight
- 41imposition of civil or criminal penalties
- 42Any government investigation of alleged violations of law could require us to expend significant time and resources in response and could generate negative publicity
- 43The FDA and other regulatory authorities actively enforce the laws and regulations prohibiting the promotion of off-label uses
- 44Current and future legislation or regulation may increase the difficulty and cost for us to obtain marketing approval of and commercialize our product candidates and may adversely affect the prices we may obtain71% rewritten
- 45a new Patient-Centered Outcomes Research Institute to oversee, identify priorities in and conduct comparative clinical effectiveness research, along with funding for such research48% rewritten
- 46Governments outside the United States tend to impose strict price controls, which may adversely affect our revenues, if any
Risks Related to Our Intellectual Property
- 47our commercial activities or products will not infringe upon the patents or proprietary rights of others
- 48If we are unable to protect the confidentiality of our trade secrets and know-how, our business and competitive position may be harmed
- 49Changes in U.S. patent law could diminish the value of patents in general, thereby impairing our ability to protect our product candidates
- 50Third parties may initiate legal proceedings alleging that we are infringing their intellectual property rights, the outcome of which would be uncertain and could have a material adverse effect on the success of our business
- 51Issued patents covering our product candidates could be found invalid or unenforceable or could be interpreted narrowly if challenged in court
- 52Obtaining and maintaining our patent protection depends on compliance with various procedural, document submission, fee payment and other requirements imposed by governmental patent agencies, and our patent protection could be reduced or eliminated for noncompliance with these requirements
- 53We may be subject to claims challenging the inventorship or ownership of our patents and other intellectual property
- 54We may be subject to claims by third parties asserting that our employees or we have misappropriated their intellectual property, or claiming ownership of what we regard as our own intellectual property
- 55If 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
- 56We will not seek to protect our intellectual property rights in all jurisdictions throughout the world and we may not be able to adequately enforce our intellectual property rights even in the jurisdictions where we seek protection
- 57and time-consuming process with uncertain outcomes. Accordingly, we may choose not to seek patent protection in certain countries, and we will not have the benefit of patent protection in such countriesNew
Risks Related to Our Operations
- 58Our future success depends on our ability to retain key executives and to attract, retain and motivate qualified personnel59% rewritten
- 59A variety of risks associated with operating internationally could materially adversely affect our business
- 60certain expenses including, among others, expenses for travel, translation and insurance; and
- 61We have significant excess leased space that may adversely affect our financial condition and results of operationsNew
- 62In addition, we may be required to recognize impairment charges with respect to right-of-use assets associated with leased properties that are no longer being fully utilized. Any such impairment charges could have a material adverse effect on our results of operations and financial conditionNew
- 63Our business and operations may suffer in the event of information technology system failures, cyberattacks or deficiencies in our cybersecurity
- 64Actual or perceived failures to comply with applicable data protection, privacy and security laws, regulations, standards and other requirements could adversely affect our business, results of operations, and financial condition34% rewritten
- 65between and among countries and regions in which we operate, it could affect the manner in which we operate our business, the geographical location or segregation of our relevant systems and operations, and could adversely affect our financial resultsNew
- 66Our business may be affected by the evolving regulatory framework for AI TechnologiesNew
- 67Acquisitions, dispositions, joint ventures, or other strategic alternatives could disrupt our business, cause dilution to our stockholders and otherwise harm our business
- 68Foreign acquisitions involve unique risks in addition to those mentioned above, including those related to integration of operations across different cultures and languages, currency risks and the particular economic, political and regulatory risks associated with specific countries66% rewritten
- 69We have in the past been subject to securities class action litigation and may be subject to similar or other litigation in the future, which may harm our business
- 70We are subject to complex and changing laws and regulations, which exposes us to potential liabilities, increased costs and other adverse effects on our business
- 71If we fail to comply with environmental, health and safety laws and regulations, we could become subject to fines or penalties or incur costs that could harm our business
- 72Our ability to use our net operating loss carryforwards and research and development credits to offset future taxable income or income tax liabilities, respectively, may be subject to certain limitations21% rewritten
Risks Related to Our Common Stock
- 73We have in the past and may again in the future receive a notice of the failure to satisfy a continued listing rule from Nasdaq67% rewritten
- 74Our executive officers, directors and principal stockholders, if they choose to act together, have the ability to significantly influence all matters submitted to stockholders for approval
- 75A significant portion of our total outstanding shares are eligible to be sold into the market, which could cause the market price of our common stock to drop significantly, even if our business is doing well
- 76We are a “smaller reporting company,” and the reduced disclosure requirements applicable to smaller reporting companies may make our common stock less attractive to investors
- 77Provisions in our restated certificate of incorporation and amended and restated bylaws and under Delaware law could make an acquisition of our company, which may be beneficial to our stockholders, more difficult and may prevent attempts by our stockholders to replace or remove our current management
- 78Because we do not anticipate paying any cash dividends on our capital stock in the foreseeable future, capital appreciation, if any, will be the sole source of gain for our stockholders
- 79The price of our common stock may be volatile and fluctuate substantially, which could result in substantial losses for purchasers of our common stock
- 80If securities or industry analysts issue an adverse or misleading opinion regarding our business, our common stock price and trading volume could decline
- 81We will continue to incur costs as a result of being a public company, and our management will continue to devote substantial time to compliance initiatives and corporate governance practices
- 82Failure to keep up with evolving and conflicting laws, regulations, trends and stakeholder expectations relating to environmental, social and governance, or ESG, practices or reporting could adversely impact our reputation, share price and access to and cost of capital or otherwise adversely impact our business
Other Seres Therapeutics 10-Ks
- FY2024 10-K risk factors74 risks
Seres Therapeutics faces severe going concern doubts, requiring near-term funding while advancing its clinical pipeline.
Filed Mar 13, 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.