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•	The study has passed the six-month primary endpoint and completed one-year follow up;

•	At six months, 116 of the 129 implanted patients, or 90%, were therapy responders and the study has met all additional primary and secondary efficacy endpoints. At one year, 115 of the 129 implanted patients, or 89%, continued to be therapy responders;

•	At six months, 93% of all implanted patients reported being “satisfied” with the therapy, and at one year, 93% of all implanted patients continued to report being “satisfied” with the therapy;

•	No serious device-related adverse events have been reported.

•	We submitted the complete six-month results of the study to the FDA as an amendment to our previously submitted PMA, and intend to follow patients out to two years; and

•	On October 24, 2019, we submitted one-year follow up data to the FDA as part of our annual investigational device exemption, or IDE, update process.

•	The study has completed one-year follow-ups and two-year follow-ups;

•	Therapy responder rate at 12 months for the 43 patients who continued with study follow-up was 94% for test responders and 72% for all implanted patients;

•	At 12 months, 84% of test responders and 77% of all implanted patients were “very” or “moderately” satisfied with the therapy provided by our r-SNM System; and

•	No serious device-related adverse events have been reported.

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•	being permitted to have only two years of audited financial statements and only two years of related selected financial data and management’s discussion and analysis of financial condition and results of operations disclosure;

•	an exemption from compliance with the auditor attestation requirement in the assessment of our internal control over financial reporting pursuant to the Sarbanes-Oxley Act of 2002, as amended, or the Sarbanes-Oxley Act;

•	reduced disclosure about executive compensation arrangements in our periodic reports, registration statements and proxy statements; and

•	exemptions from the requirements to seek non-binding advisory votes on executive compensation or golden parachute arrangements.

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•	whether we are required by the FDA or other similar regulatory authorities to conduct additional clinical studies or to modify the design of our current studies to support the approval of our r-SNM System for the treatment of OAB and UR;

•	our success in educating physicians and patients about the benefits, administration and use of our r-SNM System;

•	the timely receipt of necessary marketing approvals from the FDA and other similar regulatory authorities;

•	achieving and maintaining compliance with all regulatory requirements applicable to our r-SNM System;

•	our ability to raise additional capital on acceptable terms, or at all, if needed, to support the commercial launch of our r-SNM System;

•	the acceptance by physicians and patients of the safety and effectiveness of our r-SNM System for the indications for which we have received FDA approval;

•	our ability to successfully commercialize our r-SNM System;

•	the ability of our current manufacturers and any third parties with whom we may contract to manufacture our r-SNM System to remain in good standing with regulatory agencies and develop, validate and maintain commercially viable manufacturing processes that are compliant with applicable requirements; and

•	the availability, perceived advantages, relative cost, relative safety and relative efficacy of competing products, such as InterStim II, or competing third-line therapies, such as BOTOX injections and PTNS.

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•	our ability to successfully obtain regulatory approval in the United States for our r-SNM System for the treatment of OAB and UR without significant delay or restrictions;

•	the effectiveness of our marketing and sales efforts in the United States and internationally;

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•	our success in educating physicians and patients about the benefits, administration and use of our r-SNM System;

•	the acceptance by physicians and patients of the safety and effectiveness of our r-SNM System;

•	our third-party manufacturers’ and suppliers’ ability to manufacture and supply the components of our r-SNM System in a timely manner, in accordance with our specifications, and in compliance with applicable regulatory requirements, and to remain in good standing with regulatory agencies;

•	the availability, perceived advantages, relative cost, relative safety, and relative efficacy of alternative and competing therapies;

•	our ability to obtain, maintain, and enforce our intellectual property rights in and to our r-SNM System;

•	the emergence of competing technologies and other adverse market developments, and our need to enhance our r-SNM System and/or develop new products to maintain market share in response to such competing technologies or market developments;

•	our ability to raise additional capital on acceptable terms, or at all, if needed to support the commercialization of our r-SNM System;

•	our ability to achieve and maintain compliance with all regulatory requirements applicable to our r-SNM System; and

•	our ability to successfully conduct additional clinical studies as may be required by the FDA or comparable non-U.S. regulatory authorities to enable our r-SNM System to be approved for additional indications.

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•	our ability to successfully obtain regulatory approval in the United States for our r-SNM System for the treatment of OAB and UR and the associated costs;

•	the costs associated with manufacturing, selling, and marketing our r-SNM System in the United States, including the cost and timing of implementing our sales and marketing plan and expanding our manufacturing capabilities;

•	our ability to retain and compensate the highly qualified personnel necessary to execute our plans;

•	our ability to effectively market and sell, and achieve sufficient market acceptance and market share for, our r-SNM System;

•	the costs to maintain, expand, and defend the scope of our intellectual property portfolio, as well as any other action required in connection with licensing, preparing, filing, prosecuting, defending, and enforcing any patents or other intellectual property rights;

•	the emergence of competing technologies and other adverse market developments, and our need to enhance our r-SNM System and/or develop new products to maintain market share in response to such competing technologies or market developments;

•	our ability to establish and maintain strategic licensing or other arrangements and the financial terms of such agreements;

•	the time and cost necessary to complete postmarket studies that could be required by regulatory authorities or other studies required to obtain clearance for additional indications;

•	the timing, receipt, and amount of license fees and sales of, or royalties on, or future improvements on our r-SNM System, if any; and

•	our need to implement additional internal systems and infrastructure, including financial and reporting systems, incidental to being a public company.

•	the possible failure of the third party to manufacture any such component of our r-SNM System according to our schedule, or at all, including if our third-party contractors give greater priority to the supply of other products over

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•	the possible termination or nonrenewal of agreements by our third-party contractors at a time that is costly or inconvenient for us;

•	supplier demands for significant cost increases;

•	the possible breach by the third-party manufacturers of our agreements with them;

•	the failure of third-party manufacturers to comply with applicable regulatory requirements;

•	the possible failure of the third-party to manufacture such component of our r-SNM System according to our specifications; and

•	the possible misappropriation of our proprietary information, including our trade secrets and know-how.

•	interruption of supply resulting from modifications to, or discontinuation of, a supplier’s operations;

•	delays in product shipments resulting from uncorrected defects, reliability issues or a supplier’s failure to produce components that consistently meet our quality specifications;

•	price fluctuations due to a lack of long-term supply arrangements with our suppliers for key components;

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•	inability to obtain adequate supply in a timely manner or on commercially reasonable terms;

•	difficulty identifying and qualifying alternative suppliers for components in a timely manner;

•	inability of suppliers to comply with applicable provisions of the laws and regulations enforced by the FDA and state regulatory authorities;

•	inability to ensure the quality of products manufactured by third parties;

•	production delays related to the evaluation and testing of products from alternative suppliers and corresponding regulatory qualifications; and

•	delays in delivery by our suppliers due to changes in demand from us or their other customers.

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•	familiarity with InterStim II or preference for any new device for the treatment of SNM that Medtronic could develop and commercialize in the future;

•	inability to use our r-SNM System on-label for additional indications, such as OAB and UR, for which InterStim II is approved;

•	lack of experience with our r-SNM System and with SNM as a treatment alternative;

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•	our inability to convince key opinion leaders to provide recommendations regarding our r-SNM System, or to convince physicians and patients that it is an attractive alternative to InterStim II and other third-line therapies such as BOTOX injections and PTNS;

•	perceived or actual benefits of InterStim II;

•	perceived inadequacy of evidence supporting the clinical benefits or cost-effectiveness of our r-SNM System over existing alternatives;

•	inability to charge our r-SNM System or preference for a non-rechargeable device, such as InterStim II;

•	marketing and other efforts by Medtronic targeting physicians, including those with whom they have long-term relationships; and

•	ineffectiveness of our sales and marketing efforts for our r-SNM System.

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•	company, product, and brand recognition;

•	history of product use and physician familiarity with products and treatments;

•	regulatory approvals and more approved indications;

•	product safety, reliability and durability;

•	INS size, rechargeability and battery life;

•	quality and volume of clinical data;

•	effective marketing to and education of patients, physicians and hospitals;

•	product ease of use and patient comfort;

•	physician implantation and programming process;

•	sales force experience and market access;

•	product support and service;

•	technological innovation, product enhancements, and speed of innovation;

•	pricing and revenue strategies;

•	procedure costs to patients and the overall healthcare system; and

•	dedicated practice development.

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•	properly identify and anticipate physician and patient needs, and develop new product enhancements to meet those needs;

•	demonstrate, if required, the safety and effectiveness of new enhancements to our r-SNM System, including additional indications, with data from preclinical studies and clinical studies;

•	obtain, and obtain in a timely manner, the necessary regulatory clearances or approvals for new enhancements to our r-SNM System, product modifications or expanded indications for our r-SNM System;

•	avoid infringing upon the intellectual property rights of third-parties;

•	be fully FDA-compliant with marketing of new devices or modified products;

•	address competitive counter moves advanced by Medtronic to secure and maintain customers;

•	develop an effective and dedicated sales and marketing team to provide adequate education and training to potential users of our r-SNM System; and

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•	receive adequate coverage and reimbursement for procedures performed with our r-SNM System.

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•	problems assimilating the acquired products or technologies;

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•	issues maintaining uniform standards, procedures, controls and policies;

•	unanticipated costs associated with acquisitions;

•	diversion of management’s attention from our existing business;

•	risks associated with entering new markets in which we have limited or no experience;

•	increased legal and accounting costs relating to the acquisitions or compliance with regulatory matters; and

•	unanticipated or undisclosed liabilities of any target.

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•	pay cash dividends on, make any other distributions in respect of, or redeem, retire or repurchase, any shares of our capital stock;

•	convey, sell, lease, transfer, assign, or otherwise dispose of all or any part of our business or property;

•	effect certain changes in our business, management, ownership or business locations;

•	merge or consolidate with, or acquire all or substantially all of the capital stock or property of any other company;

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•	create, incur, assume, or be liable for any additional indebtedness, or create, incur, allow, or permit to exist any additional liens;

•	make certain investments; and

•	enter into transactions with our affiliates.

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•	difficulties in staffing and managing our international sales, marketing, and other operations;

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•	increased competition as a result of more products and procedures receiving regulatory approval or otherwise being free to market in internationally;

•	longer accounts receivable payment cycles and difficulties in collecting accounts receivable;

•	reduced or varied protection for intellectual property rights in some countries;

•	export restrictions, trade regulations, and foreign tax laws;

•	fluctuations in foreign currency exchange rates;

•	foreign certification and regulatory clearance or approval requirements;

•	difficulties in developing effective marketing campaigns in unfamiliar foreign countries;

•	customs clearance and shipping delays;

•	political, social, and economic instability internationally, terrorist attacks, and security concerns in general;

•	preference for locally manufactured products;

•	potentially adverse tax consequences, including the complexities of foreign value-added tax, tax inefficiencies related to our corporate structure, and restrictions on the repatriation of earnings;

•	the burdens of complying with a wide variety of foreign laws and different legal standards;

•	increased financial accounting and reporting burdens and complexities; and

•	FCPA, OFAC, the Bribery Act, each of which is defined below, and other export control, anti-corruption, anti-money laundering and anti-terrorism laws and regulations.

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•	costs of litigation;

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•	distraction of management’s attention from our primary business;

•	the inability to commercialize our r-SNM System and develop enhancements to our r-SNM System;

•	decreased demand for our r-SNM System;

•	damage to our business reputation;

•	product recalls or withdrawals from the market;

•	withdrawal of clinical study participants;

•	substantial monetary awards to patients or other claimants; or

•	loss of sales.

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•	inability to demonstrate to the satisfaction of the FDA or the applicable regulatory entity or notified body that the device is safe or effective for its intended uses;

•	the disagreement of the FDA or the applicable foreign regulatory body with the design or implementation of clinical studies or the interpretation of data from pre-clinical studies or clinical studies;

•	serious and unexpected adverse device effects experienced by participants in clinical studies;

•	the data from pre-clinical studies and clinical studies may be insufficient to support clearance or approval, where required;

•	inability to demonstrate that the clinical and other benefits of the device outweigh the risks;

•	the manufacturing process or facilities may not meet applicable requirements; and

•	the potential for approval policies or regulations of the FDA or applicable foreign regulatory bodies to change significantly in a manner rendering clinical data or regulatory filings insufficient for clearance or approval.

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•	we may be required to submit an IDE application to FDA, which must become effective prior to commencing human clinical studies, and the FDA may reject our IDE application and notify us that we may not begin investigational trials;

•	regulators and other comparable foreign regulatory authorities may disagree as to the design or implementation of our clinical studies;

•	regulators and/or IRBs, or other reviewing bodies may not authorize us or our investigators to commence a clinical trial, or to conduct or continue a clinical study at a prospective or specific trial site;

•	we may not reach agreements with prospective contract research organizations, or CROs, and clinical study sites, the terms of which can be subject to extensive negotiation and may vary significantly among different CROs and trial sites;

•	clinical studies may produce negative or inconclusive results, and we may decide, or regulators may require us, to conduct additional clinical studies or abandon product development programs;

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the number of subjects or patients required for clinical studies may be larger than we anticipate, enrollment in these clinical studies may be insufficient or slower than we anticipate, and the number of clinical studies being conducted at any given time may be high and result in fewer available patients for any given clinical trial, or patients may drop out of these clinical studies at a higher rate than we anticipate;

•	our third-party manufacturers, including those conducting clinical studies on our behalf, may fail to comply with regulatory requirements or meet their contractual obligations to us in a timely manner, or at all;

•	we might have to suspend or terminate clinical studies for various reasons, including a finding that the subjects are being exposed to unacceptable health risks;

•	we may have to amend clinical study protocols or conduct additional studies to reflect changes in regulatory requirements or guidance, which we may be required to submit to an IRB and/or regulatory authorities for re-examination;

•	regulators or other parties may require or recommend that we or our investigators suspend or terminate clinical research for various reasons, including safety signals or noncompliance with regulatory requirements;

•	the cost of clinical studies may be greater than we anticipate;

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•	clinical sites may not adhere to the clinical protocol or may drop out of a clinical trial;

•	we may be unable to recruit a sufficient number of clinical study sites;

•	regulators, IRBs, or other reviewing bodies may fail to approve or subsequently find fault with the manufacturing processes or facilities of third-party manufacturers or suppliers of materials for our clinical studies, the materials necessary to conduct clinical studies may be insufficient, inadequate or not available at an acceptable cost, or we may experience interruptions in supply;

•	approval policies or regulations of FDA or applicable foreign regulatory agencies may change in a manner rendering our clinical data insufficient for approval; and

•	our r-SNM System may have undesirable side effects or other unexpected characteristics.

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•	untitled letters or warning letters;

•	fines, injunctions, consent decrees and civil penalties;

•	recalls, termination of distribution, administrative detention, or seizure of our r-SNM System;

•	customer notifications or repair, replacement or refunds;

•	operating restrictions or partial suspension or total shutdown of production;

•	delays in or refusal to grant future PMA approvals or foreign regulatory approvals of future product candidates, new intended uses, including OAB and UR, or modifications to our existing product;

•	withdrawals or suspensions of PMAs or foreign regulatory approvals, resulting in prohibitions on sales of our r-SNM System;

•	FDA refusal to issue certificates to foreign governments needed to export products for sale in other countries; and

•	criminal prosecution.

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•	regulatory authorities may withdraw their approval of the product;

•	regulatory authorities may require a recall of the product or we may voluntarily recall a product;

•	regulatory authorities may require the addition of warnings or contraindications in the product labeling, narrowing of the indication in the product label or issuance of field alerts to physicians and pharmacies;

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•	regulatory authorities may require us to create a guide outlining the risks of such side effects for distribution to patients;

•	we may be subject to limitations as to how we promote the product;

•	we may be required to change the way the product is administered or modify the product in some other way;

•	regulatory authorities may require additional clinical studies or costly post-marketing testing and surveillance to monitor the safety or efficacy of the product;

•	sales of the product may decrease significantly;

•	we could be sued and held liable for harm caused to patients; and

•	our brand and reputation may suffer.

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•	strengthen the rules on placing devices on the market and reinforce surveillance once they are available;

•	establish explicit provisions on manufacturers’ responsibilities for the follow-up of the quality, performance and safety of devices placed on the market;

•	improve the traceability of medical devices throughout the supply chain to the end-user or patient through a unique identification number;

•	set up a central database to provide patients, healthcare professionals and the public with comprehensive information on products available in the EU; and

•	strengthened rules for the assessment of certain high-risk devices, such as implants, which may have to undergo an additional check by experts before they are placed on the market.

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the federal Anti-Kickback Statute, which prohibits, among other things, persons and entities from knowingly and willfully soliciting, offering, receiving or providing remuneration, directly or indirectly, in cash or in kind, to induce either the referral of an individual or furnishing or arranging for a good or service, for which payment may be made, in whole or in part, under federal healthcare programs, such as Medicare and Medicaid. A person or entity does not need to have actual knowledge of the statute or specific intent to violate it to have committed a violation. The U.S. government has interpreted this law broadly to apply to the marketing and sales activities of manufacturers. Moreover, the government may assert that a claim including items or services resulting from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the federal civil False Claims Act. Violations of the federal Anti-Kickback Statute may result in civil monetary penalties up to $74,792 for each violation, plus up to three times the remuneration involved. Civil penalties for such conduct can further be assessed under the federal False Claims Act. Violations can also result in criminal penalties, including criminal fines of up to $100,000 and imprisonment of up to 10 years. Similarly, violations can result in exclusion from participation in government healthcare programs, including Medicare and Medicaid;

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the federal civil and criminal false claims laws and civil monetary penalties laws, including the federal civil False Claims Act, which prohibit, among other things, individuals or entities from knowingly presenting, or causing to be presented, claims for payment from Medicare, Medicaid or other federal healthcare programs that are false or fraudulent. These laws can apply to manufacturers who provide information on coverage, coding, and reimbursement of their products to persons who bill third-party payers. Private individuals can bring False Claims Act “qui tam” actions, on behalf of the government and such individuals, commonly known as “whistleblowers,” may share in amounts paid by the entity to the government in fines or settlement. When an entity is determined to have violated the federal civil False Claims Act, the government may impose civil fines and penalties ranging from $11,181 to $22,363 for each false claim, plus treble damages, and exclude the entity from participation in Medicare, Medicaid and other federal healthcare programs;

•	the federal Civil Monetary Penalties Law, which prohibits, among other things, offering or transferring remuneration to a federal healthcare beneficiary that a person knows or should know is likely to influence the beneficiary’s decision to order or receive items or services reimbursable by the government from a particular provider or supplier;

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the Health Insurance Portability and Accountability Act of 1996, or HIPAA, which created additional federal criminal statutes that prohibit, among other things, executing a scheme to defraud any healthcare benefit program and making false statements relating to healthcare matters. Similar to the federal Anti-Kickback Statute, a person or entity does not need to have actual knowledge of the statute or specific intent to violate it to have committed a violation;

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the federal Physician Sunshine Act under the Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act, collectively referred to as the Affordable Care Act, which require certain applicable manufacturers of drugs, devices, biologics and medical supplies for which payment is available under Medicare, Medicaid or the Children’s Health Insurance Program, or CHIP, to report annually to the DHHS Centers for Medicare and Medicaid Services, or CMS, information related to payments and other transfers of value to physicians, which is defined broadly to include other healthcare providers and teaching hospitals, and applicable manufacturers and group purchasing organizations, to report annually ownership and investment interests held by physicians and their immediate family members. Applicable manufacturers are required to submit annual reports to CMS. Failure to submit required information may result in civil monetary penalties of $11,052 per failure up to an aggregate of $165,786 per year (or up to an aggregate of $1.105 million per year for “knowing failures”), for all payments, transfers of value or ownership or investment interests that are not timely,

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HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act of 2009, or HITECH Act, and their respective implementing regulations, which impose requirements on certain covered healthcare providers, health plans and healthcare clearinghouses as well as their business associates that perform services for them that involve individually identifiable health information, relating to the privacy, security and transmission of individually identifiable health information without appropriate authorization, including mandatory contractual terms as well as directly applicable privacy and security standards and requirements. Failure to comply with the HIPAA privacy and security standards can result in civil monetary penalties up to $55,910 per violation, not to exceed $1.68 million per calendar year for non-compliance of an identical provision, and, in certain circumstances, criminal penalties with fines up to $250,000 per violation and/or imprisonment. State attorneys general can also bring a civil action to enjoin a HIPAA violation or to obtain statutory damages on behalf of residents of his or her state;

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analogous state and foreign law equivalents of each of the above federal laws, such as anti-kickback and false claims laws which may apply to items or services reimbursed by any third-party payor, including commercial insurers or patients; state laws that require device companies to comply with the industry’s voluntary compliance guidelines and the applicable compliance guidance promulgated by the federal government or otherwise restrict payments that may be made to healthcare providers and other potential referral sources; state laws that require device manufacturers to report information related to payments and other transfers of value to physicians and other healthcare providers or marketing expenditures; consumer protection and unfair competition laws, which broadly regulate marketplace activities and activities that potentially harm customers, foreign and state laws, including the EU General Data Protection Regulation, governing the privacy and security of health information in certain circumstances, many of which differ from each other in significant ways and may not have the same effect, thus complicating compliance efforts; and

•	state laws related to insurance fraud in the case of claims involving private insurers.

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imposed an annual excise tax of 2.3% on any entity that manufactures or imports medical devices offered for sale in the United States, with limited exceptions (described in more detail below), although the effective rate paid may be lower. Through a series of legislative amendments, the tax was suspended for 2016 through 2019. Absent further legislative action, the device excise tax will be reinstated on medical device sales starting January 1, 2020;

•	established a new Patient-Centered Outcomes Research Institute to oversee and identify priorities in comparative clinical effectiveness research in an effort to coordinate and develop such research;

•	implemented payment system reforms including a national pilot program on payment bundling to encourage hospitals, physicians and other providers to improve the coordination, quality and efficiency of certain healthcare services through bundled payment models; and

•	expanded the eligibility criteria for Medicaid programs.

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•	our patents, or our pending patent applications, if issued, will include claims having a scope sufficient to protect our r-SNM System;

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•	any of our pending patent applications will issue as patents;

•	we will be able to successfully commercialize our r-SNM System on a substantial scale before our relevant patents have expired;

•	we were the first to make, or file for patent protection of, the inventions covered by each of our patents and pending patent applications, as is dictated by the applicable national patent laws in effect at the time of a patent application being filed;

•	we were the first to file patent applications for these inventions, where such rules are applicable;

•	others will not develop similar or alternative technologies that do not infringe our patents;

•	any of our patents will be found to ultimately be valid and enforceable;

•	any patents issued to us will provide a basis for an exclusive market for our commercially viable products, will provide us with any competitive advantages or will not be challenged by third parties;

•	we will develop additional proprietary technologies or products that are separately patentable; or

•	our commercial activities or products will not infringe upon the patents of others.

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•	stop making, selling or using products or technologies that allegedly infringe the asserted intellectual property;

•	lose the opportunity to license our technology to others or to collect royalty payments based upon successful protection and assertion of our intellectual property rights against others;

•	incur significant legal expenses;

•	pay substantial damages or royalties to the party whose intellectual property rights we may be found to be infringing;

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•	pay the attorney’s fees and costs of litigation to the party whose intellectual property rights we may be found to be infringing;

•	redesign those products that contain the allegedly infringing intellectual property, which could be costly, disruptive, or infeasible; and

•	attempt to obtain a license to the relevant intellectual property from third parties, which may not be available on reasonable terms, or at all, or, from third parties whom may attempt to license rights that they have or do not have.

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•	announcements of regulatory approval or disapproval of our r-SNM System for additional indications or for any future enhancements to our r-SNM System;

•	adverse results from or delays in clinical studies of our r-SNM System;

•	unanticipated safety concerns related to the use of our r-SNM System;

•	FDA or other U.S. or foreign regulatory or legal actions or changes affecting us or our industry;

•	any termination or loss of rights under the License Agreement;

•	any voluntary or regulatory mandated product recalls;

•	adverse developments concerning our manufacturers or suppliers or any future strategic partnerships;

•	introductions and announcements of new technologies by us, any commercialization partners or our competitors, and the timing of these introductions and announcements;

•	variations in our financial results or those of companies that are perceived to be similar to us;

•	success or failure of competitive products or therapies in the SNM market;

•	changes in the structure of healthcare payment of our r-SNM System;

•	announcements by us or our competitors of significant acquisitions, licenses, strategic partnerships, joint ventures or capital commitments;

•	market conditions in the medical technology industry and issuance of securities analysts’ reports or recommendations;

•	quarterly variations in our results of operations or those of our competitors;

•	changes in financial estimates or guidance, including our ability to meet our future revenue and operating profit or loss estimates or guidance;

•	the public’s reaction to our earnings releases, other public announcements and filings with the SEC;

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•	rumors and market speculation involving us or other companies in our industry;

•	sales of substantial amounts of our stock by directors, officers or significant stockholders, or the expectation that such sales might occur;

•	general economic, industry and market conditions, including the size and growth, if any, of the market;

•	news reports relating to trends, concerns and other issues in the market or industry;

•	operating and stock performance of other companies that investors deem comparable to us and overall performance of the equity markets;

•	additions or departures of key personnel;

•	intellectual property, product liability or other litigation against us, our third-party manufacturers or other parties on which we rely or litigation against our general industry;

•	changes in our capital structure, such as future issuances of securities and the incurrence of additional debt;

•	changes in accounting standards, policies, guidelines, interpretations or principles;

•	the results of any future legal proceedings; and

•	other factors described in this “Risk Factors” section.

•	being permitted to have only two years of audited financial statements and only two years of related selected financial data and management’s discussion and analysis of financial condition and results of operations disclosure;

•	an exemption from compliance with the auditor attestation requirement in the assessment of our internal control over financial reporting pursuant to the Sarbanes-Oxley Act of 2002, as amended, or the Sarbanes-Oxley Act;

•	reduced disclosure about executive compensation arrangements in our periodic reports, registration statements and proxy statements; and

•	exemptions from the requirements to seek non-binding advisory votes on executive compensation or golden parachute arrangements.

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•	permit our board of directors to issue shares of preferred stock, with any rights, preferences and privileges as they may designate, without stockholder approval, which could be used to dilute the ownership of a hostile bidder significantly;

•	provide that the authorized number of directors may be changed only by resolution of our board of directors and that a director may only be removed with or without cause by the affirmative vote of the holders of at least 66 2/3% of our voting stock;

•	provide that all vacancies, including newly created directorships, may, except as otherwise required by law, be filled by the affirmative vote of a majority of directors then in office, even if less than a quorum;

•	require that any action to be taken by our stockholders must be effected at a duly called annual or special meeting of stockholders and not be taken by written consent;

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provide that stockholders seeking to present proposals before a meeting of stockholders or to nominate candidates for election as directors at a meeting of stockholders must provide notice in writing in a timely manner and also specify requirements as to the form and content of a stockholder’s notice, which may discourage or deter a potential acquiror from conducting a solicitation of proxies to elect the acquiror’s own slate of directors or otherwise attempting to obtain control of our company;

•	prohibit cumulative voting in the election of directors, which limits the ability of minority stockholders to elect director candidates; and

•	provide that special meetings of our stockholders may be called only by the Chair of the board, our Chief Executive Officer or by our board of directors pursuant to a resolution adopted by a majority of the total number of authorized

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•	our ability to maintain regulatory approvals for our r-SNM System and obtain regulatory approvals for our r-SNM System for additional indications;

•	our ability to successfully commercialize our r-SNM System in the United States and internationally;

•	commercial success, ability to capture market share and market acceptance of our r-SNM System;

•	our ability to enhance our r-SNM System;

•	our ability to achieve and maintain adequate levels of coverage or reimbursement for our r-SNM System;

•	our ability to build our own sales and marketing capabilities, or seek collaborative partners, to commercialize our r-SNM System;

•	our ability to accurately forecast customer demand for our r-SNM System and manage our inventory;

•	our ability to retain our senior management and hire other highly qualified personnel, including a sales force;

•	developments and projections relating to our competitors and our industry, including competing products and therapies for the treatment of OAB, FI and UR;

•	the accuracy of our estimates regarding expenses, future revenue and needs for additional financing;

•	FDA or other United States or foreign regulatory actions affecting us or the healthcare industry generally, including healthcare reform measures in the United States and international markets;

•	the timing or likelihood of regulatory filings and approvals or clearances;

•	any supplier shortages related to our r-SNM System or its components and any manufacturing disruptions which may impact our inventory supply as we expand our business;

•	our ability to establish and maintain intellectual property protection for our r-SNM System or avoid claims of infringement of third party intellectual property;

•	the volatility of the trading price of our common stock.

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•	The study has passed the six-month primary endpoint and completed one-year follow up;

•	At six months, 116 of the 129 implanted patients, or 90%, were therapy responders and the study has met all additional primary and secondary efficacy endpoints. At one year, 115 of the 129 implanted patients, or 89%, continued to be therapy responders;

•	At six months, 93% of all implanted patients reported being “satisfied” with the therapy, and at one year, 93% of all implanted patients continued to report being “satisfied” with the therapy;

•	No serious device-related adverse events have been reported.

•	We submitted the complete six-month results of the study to the FDA as an amendment to our previously submitted PMA, and intend to follow patients out to two years; and

•	On October 24, 2019, we submitted one-year follow up data to the FDA as part of our annual investigational device exemption, or IDE, update process.

•	The study has completed one-year follow-ups and two-year follow-ups;

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•	Therapy responder rate at 12 months for the 43 patients who continued with study follow-up was 94% for test responders and 72% for all implanted patients;

•	At 12 months, 84% of test responders and 77% of all implanted patients were “very” or “moderately” satisfied with the therapy provided by our r-SNM System; and

•	No serious device-related adverse events have been reported.

•	UUI is the sudden need to urinate accompanied by involuntary leakage of urine, regardless of frequency;

•	UUF is the sudden need to urinate an abnormal number of times, typically more than eight times per day;

•	UR is the inability to completely or partially empty the bladder; and

•	FI is the inability to control bowel function that could lead to involuntary or accidental leakage from the rectum.

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Large and growing SNM market with established coverage and reimbursement. SNM treatment for OAB, FI, and UR is a well-established therapy. Since the first FDA-approved SNM device, the InterStim I System, was introduced in 1997, we estimate hundreds of thousands of patients have been implanted worldwide with such system and its successor InterStim II. In 2018, we believe that approximately 45,000 patients were implanted with SNM therapy, including an estimated 10,000 patients receiving replacement implants, corresponding to an approximately $650 million global annual addressable SNM market and approximately 8% year-over-year growth. With the global SNM market currently estimated to be approximately one percent penetrated, we believe that the introduction of a new and highly differentiated SNM solution has the potential to grow the market in excess of historical size and growth rates. In addition, because SNM therapy has been widely used in patients for over 20 years in the United States, which we believe makes up nearly 90% of the sales in the global SNM market, reimbursement codes and payments are well-established and the procedure is covered by most major U.S. insurers.

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Long-term solution offering material benefits to patients, physicians, and payors. We believe that our r-SNM System is the first and only system for SNM therapy with a rechargeable INS battery that is designed to last approximately 15 years. As a result, patients implanted with our r-SNM System do not need to undergo replacement surgery every three to five years, as is the case for patients implanted with InterStim II, which is not a rechargeable system. We believe a rechargeable system will significantly improve a patient’s experience and reduce the risks of surgery and associated infections. In addition, by reducing the number of replacement surgeries, physicians and facilities can utilize their resources more efficiently. Our r-SNM System also allows full-body MRI scans under certain conditions, which avoids the risk and burden associated with the explant procedure that a patient may be subjected to should the patient require an MRI scan for a body part other than the head, which is currently required for patients implanted with InterStim II. Finally, we believe that our technology has the potential to significantly reduce overall costs to the healthcare system. In 2016, we commissioned a study, which concluded that a rechargeable SNM system with a 15-year battery life could potentially reduce overall U.S. healthcare costs by up to $12 billion over a 15-year horizon.

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Significant competitive and functional advantages over the only other approved SNM device. We believe that our r-SNM System’s innovative and proprietary design offers significant competitive and functional advantages over InterStim II. Our proprietary method of combining ceramic and titanium to fabricate the INS enclosure enables us to incorporate a significantly smaller recharging coil into our INS, which offers benefits such as 60% smaller size and half the weight of InterStim II and enhanced communication range. In addition, our r-SNM System employs constant current which automatically adjusts stimulation based on changes to impedance that occur as the implanted lead scars into the body, which we expect will provide a more consistent and reliable therapy over time and reduce patient and physician management of the therapy. Further, our r-SNM System is differentiated by significant wireless charging benefits and an easy-to-use patient remote control. Finally, we designed and custom built a clinician programmer that guides the implanting physician through electrode placement and stimulation programming. Our clinician programmer allows physicians to connect to a patient’s INS, while the patient is in the physician’s care, to access key therapy data that is stored and maintained on the INS.

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Strong clinical data. We have a growing body of compelling clinical evidence that demonstrates the safety and effectiveness of our r-SNM System. In our clinical work to date, we have implanted 180 patients in the United States and Europe. Our ARTISAN-SNM pivotal study is evaluating 129 patients with UUI. In the six-month results, therapy response rate was 90% for all patients, and at one year the response rate was maintained at 89% for all patients. We submitted the complete six-month results of the study to the FDA as an amendment to our previously submitted PMA. Our European study, RELAX-OAB, evaluated 51 patients that suffered from UUF and UUI. The therapeutic response rate at 12 months for the 43 patients who continued with study follow-up was 94% for test responders and 72% for all implanted patients. We intend to follow patients for at least two years for both of our clinical studies. We believe clinical data is important and will be key to driving broad-based adoption of our r-SNM System.

•	Substantial sales and clinical field teams. We hired and trained a dedicated direct sales organization, comprised of approximately 100 sales professionals, 11 regional sales managers and 35 clinical specialists, in advance of the commercial launch of our r-SNM System in the United States. We used the time between our initial public offering

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A deep understanding of our target market with a sole focus on SNM. We formed our company by assembling an experienced team with significant in-depth knowledge of our target market. From the outset, we spent significant time understanding the unmet needs of patients and physicians through patient field studies and early engagement of physicians and key opinion leaders. By utilizing this market knowledge and focusing solely on SNM, we have been able to navigate the development and regulatory requirements for our r-SNM System in an efficient manner. Since we commenced operations in late 2013, we have received a PMA for FI in the United States from the FDA and marketing approval in Europe, Canada, and Australia for OAB, FI, and UR. We have also submitted a PMA application for OAB and UR to the FDA. This pure-play SNM focus also allows us to efficiently manage our research and development activities to further innovate and enhance our r-SNM System.

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Comprehensive and broad intellectual property portfolio. Our r-SNM System is supported by a nucleus of issued patents and patent applications that we license from AMF pursuant to the License Agreement. In addition to that nucleus, we have created a substantial portfolio of wholly owned intellectual property, which includes patents, know-how and trade secrets that are embodied by our r-SNM System. As of September 3, 2019, we wholly owned 23 issued U.S. patents and 56 issued foreign patents, and 19 pending U.S. patent applications and 53 pending foreign patent applications. We also license from AMF 27 issued U.S. patents and four pending U.S. patent applications, as well as 58 issued foreign patents and 14 pending foreign patent applications. Issued patents owned or used by us will expire between 2021 and 2039.

•	Experienced management team. Our senior management team has over 140 years of combined experience in the medical technology industry. They have a track record of successfully bringing products to market, with significant expertise in development, regulatory approval and commercialization activities.

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Obtain FDA approval of our r-SNM System for OAB and UR. On September 6, 2019, we received FDA approval for our r-SNM System for the treatment of FI, and we are also seeking FDA approval for the treatment of OAB and UR. In June 2018, we completed the enrollment and implantation of 129 patients with UUI for our ARTISAN-SNM pivotal study. On December 3, 2018, we submitted a new PMA application for OAB and UR to the FDA which was officially accepted by the FDA on December 10, 2018. This PMA was initially based on safety and effectiveness data from a review of clinical literature reporting on the InterStim system and a review of technical test data on our r-SNM System. In this PMA filing, in addition to published clinical literature reporting on the InterStim system, we submitted one-year follow-up data from our 51-patient RELAX-OAB European postmarket clinical follow-up study to support the PMA. Since the original PMA submission in December 2018, we have submitted various amendments to the FDA in support of the PMA. These amendments included the clinical results on the first 60 patients to reach their six-month primary endpoint from our ARTISAN-SNM pivotal study. In addition, we filed amendments to include data in support of full-body MRI labeling and complete six-month clinical data on all implanted subjects from the ARTISAN-SNM study.

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Continue to promote awareness of our r-SNM System among healthcare providers. We believe that of the approximately 47,000 physicians addressing OAB and FI in the United States, only approximately 2,000 are trained to perform, or are actively performing, SNM procedures. In the near-term, we plan to focus on building and maintaining support from key opinion leaders while increasing awareness of our r-SNM System among the estimated 1,000 physicians who represent a majority of the implant volume in the United States. We intend to help physicians in their direct-to-patient outreach, and may in the future engage in our own direct-to-patient marketing initiatives. We believe this will expand the number of patients undergoing SNM procedures.

•	Continue to develop a commercialization infrastructure with a dedicated direct sales team. We intend to focus the significant majority of our sales and marketing efforts in the United States since we believe that nearly 90% of the annual global SNM sales are generated in this market. Our priority is to target high-volume implant centers. We hired

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Continuously innovate to introduce enhanced SNM product offerings and pursue expanded indications. We intend to continue to invest in research and development activities focused on improvements and enhancements to our r-SNM System. Our goals include introducing a second generation INS that extends the time between recharging sessions from once every one to two weeks to once a month, incorporating a modified header that allows us to connect our INS to an already implanted InterStim II lead, and over time, expanding the suite of product solutions available for SNM therapy, including a non-rechargeable SNM device that utilizes a primary cell battery.

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Further penetrate our initial target market by promoting patient and practice awareness. Currently, we estimate that approximately one percent of the four million OAB and FI patients that make up the annual global addressable SNM market are implanted with an SNM device. We believe that there are several factors that influence this light penetration of the market. First, although patients may be familiar with SNM as an alternative therapy, patients who elect not to have the procedure do so because of the limitations of the existing technology, such as the potential for multiple INS replacement surgeries and the large device size. Second, we believe there is a large potential patient population that suffers from OAB and/or FI and is unaware of third-line therapies such as SNM. We believe that a very low percentage of physician specialists that treat patients with symptoms of OAB and/or FI are actively performing SNM procedures. We intend to educate physicians that are unfamiliar with or do not utilize SNM therapy on the benefits on SNM therapy and the advantages of our r-SNM System. We also intend to increase physician awareness through engagement and continued publication of scientific data in peer reviewed journals. Further, we intend to engage individuals who suffer from OAB and FI symptoms through direct patient outreach.

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•	First-line therapy: behavioral changes, including conservative treatment options such as diet, exercise, timed voiding, pelvic floor exercises, and biofeedback;

•	Second-line therapy: drug therapy, including two classes of OAB drugs, anti-muscarinics and beta-3 adrenergic agonists, with patients often trying multiple drugs; and

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Third-line therapy: minimally invasive therapy consisting of SNM, BOTOX injections and PTNS. First- and second-line therapies comprise the largest segment of the treatment market, and medication and other non-implantable treatments are better known to physicians and hospitals than SNM therapy. According to most U.S. insurance reimbursement programs, patients must try and fail at least two different medications before considering and being eligible for third-line therapies.

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•	Miniaturized rechargeable INS, which houses the electronics for the device. It is five cubic centimeters and is intended to provide one to two weeks of battery life between charges under normal use conditions.

•	Tined four-electrode lead, which delivers current-controlled stimulation to the targeted sacral nerve. The tines help anchor the lead in its desired position.

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•	Wireless charging device, which allows transcutaneous charging of the INS. The charger uses an easy to understand combination of visual, audio and haptic indicators to provide information about the charging status. Further, it has the ability to be held into position by an adhesive fixation device or a reusable and flexible belt, which significantly enhances patient mobility.

•	Wireless remote control that communicates with the device at a range of up to approximately three feet, which is a small and easy-to-use device that allows the patient to adjust stimulation intensity levels and turn on or off stimulation. The remote control includes a light-emitting diode light that indicates therapy intensity and the status of remaining battery life of the INS.

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•	Long-term solution. The battery is designed to last 15 years.

•	Material benefits to physicians and payors. We believe our r-SNM System has the potential to enable physicians and facilities to utilize their resources more efficiently and significantly reduce overall costs to the healthcare system.

•	Smaller and lighter implantable neurostimulator. Our INS is approximately 60% smaller than and half the weight of InterStim II.

•	Constant current. Our r-SNM System delivers constant current stimulation, which automatically adjusts stimulation based on changes to impedance that occur as the implanted lead scars into the body, which we expect will provide a more consistent and reliable therapy.

•	Improved patient experience. Our r-SNM System charges wirelessly and includes a discrete, small and easy-to-use remote control.

•	Simplified physician implantation and programming. Our clinician programmer guides the implanting physician through electrode placement and stimulation programming and enables physicians to access key data from the patient’s INS.

•	Full-body MRI scan labeling. Our r-SNM System allows for full-body MRI scans. We believe that this feature

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•	company, product and brand recognition;

•	history of product use and physician familiarity with products and treatments;

•	regulatory approvals and approved indications;

•	product safety, reliability and durability;

•	INS size, rechargeability and battery life;

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•	full-body MRI scan safety;

•	quality and volume of clinical data;

•	effective marketing to and education of patients, physicians and hospitals;

•	product ease of use and patient comfort;

•	physician implantation and programming process;

•	sales force experience and market access;

•	product support and service;

•	technological innovation, product enhancements and speed of innovation;

•	pricing and revenue strategies;

•	procedure costs to patients and the overall healthcare system; and

•	dedicated practice development.

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•	establishment, registration and device listing with the FDA;

•	QSR requirements, which require manufacturers, including third-party manufacturers, to follow stringent design, testing, control, documentation and other quality assurance procedures during all aspects of the design and manufacturing process;

•	labeling and marketing regulations, which require that promotion is truthful, not misleading, fairly balanced and provide adequate directions for use and that all claims are substantiated, and also prohibit the promotion of products for unapproved or “off-label” uses and impose other restrictions on labeling;

•	FDA guidance on off-label dissemination of information and responding to unsolicited requests for information;

•	the federal Physician Sunshine Act and various state and foreign laws on reporting remunerative relationships with health care providers;

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the federal Anti-Kickback Statute (and similar state laws) prohibiting, among other things, soliciting, receiving, offering or providing remuneration intended to induce the purchase or recommendation of an item or service reimbursable under a federal healthcare program, such as Medicare or Medicaid. A person or entity does not have to have actual knowledge of this statute or specific intent to violate it to have committed a violation;

•

the federal False Claims Act (and similar state laws) prohibiting, among other things, knowingly presenting, or causing to be presented, claims for payment or approval to the federal government that are false or fraudulent, knowingly making a false statement material to an obligation to pay or transmit money or property to the federal government or knowingly concealing, or knowingly and improperly avoiding or decreasing, an obligation to pay or transmit money to the federal government. The government may assert that items or services resulting from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the False Claims Act;

•	clearance or approval of product modifications to 510(k)-cleared devices that could significantly affect safety or effectiveness or that would constitute a major change in intended use of a cleared device, or approval of a supplement for certain modifications to PMA devices;

•	medical device reporting regulations, which require that a manufacturer report to the FDA if a device it markets may have caused or contributed to a death or serious injury, or has malfunctioned and the device or a similar device that it markets would be likely to cause or contribute to a death or serious injury, if the malfunction were to recur;

•	correction, removal and recall reporting regulations, which require that manufacturers report to the FDA field corrections and product recalls or removals if undertaken to reduce a risk to health posed by the device or to remedy a violation of the FDCA that may present a risk to health;

•	complying with the new federal law and regulations requiring Unique Device Identifiers, or UDI, on devices and also requiring the submission of certain information about each device to the FDA’s Global Unique Device Identification Database, or GUDID;

•	the FDA’s recall authority, whereby the agency can under certain circumstances order device manufacturers to recall from the market a product that is in violation of governing laws and regulations; and

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•	postmarket surveillance activities and regulations, which apply when deemed by the FDA to be necessary to protect the public health or to provide additional safety and effectiveness data for the device.

•	warning letters, untitled letters, fines, injunctions, consent decrees and civil penalties;

•	recalls, withdrawals, or administrative detention or seizure of our r-SNM System or any future product candidates;

•	operating restrictions or partial suspension or total shutdown of production;

•	refusing or delaying requests for 510(k) marketing clearance or PMA approvals of new products or modified products;

•	withdrawing 510(k) clearances or PMA approvals that have already been granted;

•	refusal to permit the export or import of our r-SNM System or future product candidates; or

•	criminal prosecution.

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•	strengthen the rules on placing devices on the market and reinforce surveillance once they are available;

•	establish explicit provisions on manufacturers’ responsibilities for the follow-up of the quality, performance and safety of devices placed on the market;

•	improve the traceability of medical devices throughout the supply chain to the end-user or patient through a unique identification number;

•	set up a central database to provide patients, healthcare professionals and the public with comprehensive

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•	strengthen rules for the assessment of certain high-risk devices, such as implants, which may have to undergo an additional check by experts before they are placed on the market.

•	design, development, manufacturing and testing;

•	product standards;

•	product safety;

•	product safety reporting;

•	marketing, sales and distribution;

•	packaging and storage requirements;

•	labeling requirements;

•	content and language of instructions for use;

•	clinical studies;

•	record keeping procedures;

•	advertising and promotion;

•	recalls and field corrective actions;

•	postmarket surveillance, including reporting of deaths or serious injuries and malfunctions that, if they were to recur, could lead to death or serious injury;

•	import and export restrictions;

•	tariff regulations, duties and tax requirements;

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•	registration for reimbursement; and

•	necessity of testing performed in country by distributors for licensees.

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•	50,000,000 shares of common stock, par value $0.0001 per share; and

•	10,000,000 shares of preferred stock, par value $0.0001 per share.

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•	the number of shares constituting the series and the distinctive designation of the series;

•	the dividend rate on the shares of the series, whether dividends will be cumulative, and if so, from which date or dates, and the relative rights of priority, if any, of payment of dividends on shares of the series;

•	whether the series will have voting rights in addition to the voting rights provided by law and, if so, the terms of the voting rights;

•	whether the series will have conversion privileges and, if so, the terms and conditions of conversion;

•	whether or not the shares of the series will be redeemable or exchangeable, and, if so, the dates, terms and conditions of redemption or exchange, as the case may be;

•	whether the series will have a sinking fund for the redemption or purchase of shares of that series, and, if so, the terms and amount of the sinking fund; and

•	the rights of the shares of the series in the event of our voluntary or involuntary liquidation, dissolution or winding up and the relative rights or priority, if any, of payment of shares of the series.

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•	prior to such time the board of directors of the corporation approved either the business combination or the transaction which resulted in the stockholder becoming an interested stockholder;

•

upon consummation of the transaction which resulted in the stockholder becoming an interested stockholder, the interested stockholder owned at least 85% of the voting stock of the corporation outstanding at the time the transaction commenced, excluding for purposes of determining the voting stock outstanding (but not the outstanding voting stock owned by the interested stockholder) those shares owned (i) by persons who are directors and also officers and (ii) employee stock plans in which employee participants do not have the right to determine confidentially whether shares held subject to the plan will be tendered in a tender or exchange offer; or

•	at or subsequent to such time the business combination is approved by the board of directors and authorized at an annual or special meeting of stockholders, and not by written consent, by the affirmative vote of at least 66 2/3% of the outstanding voting stock which is not owned by the interested stockholder.

•	any merger or consolidation involving the corporation and the interested stockholder;

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•	any sale, transfer, pledge or other disposition involving the interested stockholder of 10% or more of the assets of the corporation;

•	subject to exceptions, any transaction that results in the issuance or transfer by the corporation of any stock of the corporation to the interested stockholder;

•	subject to exceptions, any transaction involving the corporation that has the effect of increasing the proportionate share of the stock of any class or series of the corporation beneficially owned by the interested stockholder; or

•	the receipt by the interested stockholder of the benefit of any loans, advances, guarantees, pledges or other financial benefits provided by or through the corporation.

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•	the title of the series of debt securities and the ranking;

•	the aggregate principal amount and any limit on that amount;

•	the price at which the debt securities will be issued;

•	the date on which the debt securities mature;

•	the fixed or variable rate at which the debt securities will bear interest, or the method by which the rate shall be determined;

•	the timing, place and manner of making principal, interest and any premium payments on the debt securities, and, if applicable, where the debt securities may be surrendered for registration of transfer or exchange;

•	the date or dates, if any, after which the debt securities may be converted or exchanged into or for our common stock or another company’s securities or property or cash, and the terms of any such conversion or exchange;

•	any redemption or early repayment provisions;

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•	any sinking fund or similar provisions;

•	the authorized denominations;

•	any applicable subordination provisions;

•	any guarantees of the securities by our subsidiaries or others;

•	the currency in which we will pay the principal, interest and any premium payments on the debt securities;

•	whether the amount of payments of principal of (and premium, if any) or interest, if any, on the debt securities may be determined with reference to an index, formula or other method and the manner in which the amounts shall be determined;

•	the denominations in which we will issue the series of debt securities, if other than denominations of $1,000 and any integral multiple thereof;

•	the time period within which, the manner in which and the terms and conditions upon which the purchaser of the securities can select the payment currency;

•	the provisions, if any, granting special rights to the holders of debt securities upon certain events;

•	any additions to or changes in the events of default or covenants with respect to the debt securities, and any change in the right of the trustee or the holders, from those described in this prospectus, to declare principal, premium and interest to be due and payable;

•	additions to or changes in or deletions of the provisions relating to covenant defeasance and legal defeasance;

•	additions to or changes in the provisions relating to satisfaction and discharge of the indenture;

•	additions to or changes in the provisions relating to the modification of the indenture both with and without the consent of holders of debt securities issued under the indenture;

•	whether and under what circumstances we will pay any additional amounts on the debt securities for any tax, assessment or governmental charge and, if so, whether we will have the option to redeem the debt securities instead of paying those amounts;

•	the form (registered and/or bearer securities), any restrictions applicable to the offer, sale or delivery of bearer securities and the terms, if any, upon which bearer securities may be exchanged for registered securities and vice versa;

•	the date of any bearer securities or any global security, if other than the date of original issuance of the first security of the series to be issued;

•	the person to whom and manner in which any interest shall be payable;

•	whether the securities will be issued in whole or in part in the form of one or more global securities;

•	the identity of the depositary for global securities;

•	whether a temporary security is to be issued with respect to the series and whether any interest payable prior to the issuance of definitive securities of the series will be credited to the account of the persons entitled thereto;

•	the terms upon which beneficial interests in a temporary global security may be exchanged in whole or in part for beneficial interests in a definitive global security or for individual definitive securities and the terms upon which exchanges may be made;

•	the securities exchange(s), if any, on which the securities will be listed;

•	whether any underwriter(s) will act as market maker(s) for the securities;

•	the form (certificated or book-entry);

•	the form and/or terms of certificates, documents or conditions which may be necessary, if any, for the debt securities to be issuable in final form; and

•	additional terms not inconsistent with the provisions of the indenture.

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•	we are the surviving entity or, in the event that we are not the surviving entity, the entity formed by the transaction (in a consolidation) or the entity which received the transfer of assets is organized under the laws of any state of the United States or the District of Columbia and that the entity assumes all of our obligations under the debt securities and the indenture; and

•	immediately after giving effect to the transaction, no event of default, as defined in the indenture, shall have occurred and be continuing.

•	failure to pay principal of any debt security of that series when due and payable at maturity, upon acceleration, redemption or otherwise;

•	failure to pay any interest on any debt security of that series when due, and the default continues for 30 days;

•	failure to make sinking fund payments when due;

•	failure to comply with any covenant or warranty contained in the indenture, other than covenants or warranties contained in the indenture solely for the benefit of other series of debt securities, and the default continues for 30 days after notice from the trustee or the holders of at least 25% in principal amount of the then outstanding debt securities of that series;

•	certain events of bankruptcy, insolvency or reorganization; and

•	any other event of default provided with respect to that particular series of debt securities.

•	if all events of default other than the nonpayment of principal of or interest on the debt securities of that series which have become due solely because of the acceleration have been waived or cured; and

•	the rescission would not conflict with any judgment or decree of a court of competent jurisdiction. For information as to waiver of defaults, see “Modification of Indenture; Waiver” below.

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•	cure any ambiguity, defect or inconsistency;

•	provide for the assumption of our obligations to holders of the debt securities by a successor corporation;

•	provide for uncertificated debt securities in addition to certificated debt securities;

•	make any change that does not adversely affect the rights of any holder of the debt securities in any material respect;

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add to, change or eliminate any other provisions of the indenture in respect of one or more series of debt securities if the change would not (i) apply to any security of any series created prior to the execution of a supplemental indenture and entitled to the benefit of the provision, and (ii) modify the rights of the holder of any security or would become effective only when there is no outstanding security of any series created prior to the execution of the supplemental indenture and entitled to the benefits of the provisions proposed to be changed;

•	establish any additional series of debt securities; or

•	comply with any requirement of the SEC in connection with the qualification of the indenture under the Trust Indenture Act.

•	reduce the principal amount of the debt securities;

•	reduce the rate or change the time for payment of interest;

•	change the fixed maturity date;

•	change the date on which any debt security may be subject to redemption or repurchase, or reduce the redemption or repurchase price;

•	make any debt security payable in currency other than that stated in the debt security;

•	waive any existing default or event of default and the resulting consequences;

•	modify the right of any holder to receive payment of principal or interest on any debt security;

•	impair the right of any holder to institute suit for the enforcement of any payment due; or

•	make any change in the foregoing amendment provisions which require each holder’s consent.

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•	we have paid or deposited with the trustee funds or United States government obligations in an amount sufficient to pay at maturity all outstanding debt securities of the series, including interest other than destroyed, lost or stolen debt securities of the series which have not been replaced or paid;

•	all outstanding debt securities of the series have been delivered (other than destroyed, lost or stolen debt securities of the series which have not been replaced or paid) to the trustee for cancellation;

•	all outstanding debt securities of any series have become due and payable; or

•	we have paid all other sums payable under the indenture.

•	we have paid or deposited with the trustee, in trust an amount of cash or United States government obligations sufficient to pay all outstanding principal of and interest on the then outstanding debt securities of the series at maturity or upon their redemption, as the case may be;

•	the deposit will not result in a breach of, or constitute a default under, the indenture;

•	no default or event of default shall have occurred and continue on the date of deposit and no event of default as a result of a bankruptcy or event which with the giving of notice or the lapse of time would become a bankruptcy event of default shall have occurred and be continuing on the 91st day after that date;

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we deliver to the trustee a legal opinion that we have received from, or there has been published by, the United States Internal Revenue Service a ruling, or there has been a change in tax law, in either case to the effect that the holders of the debt securities of the series will not recognize income, gain or loss for Federal income tax purposes as a result of our exercise of our option and shall be subject to Federal income tax on the same amounts and in the same manner and at the same times as would have been the case if we did not exercise our option; or

•	certain other conditions are met.

•	we deposit or cause to be deposited with the trustee in trust an amount of cash or United States government obligations sufficient to pay and discharge when due the entire unpaid principal of and interest on all outstanding debt securities of any series;

•	the deposit will not result in a breach of, or constitute a default under, the indenture;

•	no default or event of default shall have occurred and be continuing on the date of deposit and no event of default as a result of a bankruptcy or event which with the giving of notice or the lapse of time would become a bankruptcy event of default shall have occurred and be continuing on the 91st day after that date;

•	we deliver to the trustee a legal opinion that the holders of the debt securities of the series will not recognize income, gain or loss for Federal income tax purposes as a result of our exercise of our option and shall be subject to Federal income tax on the same amounts and in the same manner and at the same times as would have been the case if we did not exercise our option; and

•	certain other conditions are met.

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•	rights of registration of transfer and exchange of debt securities of the series;

•	rights of substitution of mutilated, defaced, destroyed, lost or stolen debt securities of the series;

•	rights of holders of debt securities of the series to receive payments of principal thereof and premium, if any, and interest thereon when due;

•	rights, obligations, duties and immunities of the trustee;

•	rights of holders of debt securities of the series as beneficiaries with respect to property deposited with the trustee and payable to all or any of them; and

•	our obligations to maintain an office or agency in respect of the debt securities of the series.

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•	the depositary has notified us that it is unwilling or unable or is no longer qualified to continue as depositary;

•	we order the trustee that the global security shall be so transferable, registrable and exchangeable, and the transfers shall be registrable; or

•	other circumstances, if any, as may be described in any applicable prospectus supplement.

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•	the title of the warrants;

•	the aggregate number of warrants;

•	the price or prices at which the warrants will be issued;

•	the currencies in which the price or prices of the warrants may be payable;

•	the designation, amount and terms of our capital stock or debt securities purchasable upon exercise of the warrants;

•	the designation and terms of our other securities, if any, that may be issued in connection with the warrants, and the number of warrants issued with each corresponding security;

•	if applicable, the date that the warrants and the securities purchasable upon exercise of the warrants will be separately transferable;

•	the prices and currencies for which the securities purchasable upon exercise of the warrants may be purchased;

•	the date that the warrants may first be exercised;

•	the date that the warrants expire;

•	the minimum or maximum amount of warrants that may be exercised at any one time;

•	the effect of any merger, consolidation, sale or other disposition of our business on the warrant agreements and the warrants;

•	the terms of any rights to redeem or call the warrants;

•	any provisions for changes to or adjustments in the exercise price or number of securities issuable upon exercise of the warrants;

•	information with respect to book-entry procedures, if any;

•	the manner in which the warrant agreements and warrants may be modified;

•	a discussion of certain federal income tax considerations; and

•	any other material terms of the warrants, including terms, procedures and limitations relating to the exchange and exercise of the warrants.

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•	the designation and terms of the units and of the securities comprising the units, including whether and under what circumstances those securities may be held or transferred separately;

•	any provisions of the governing unit agreement that differ from those described below; and

•	any provisions for the issuance, payment, settlement, transfer or exchange of the units or of the securities comprising the units.

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•	the title of the rights;

•	the securities for which the rights are exercisable;

•	the exercise price for the rights;

•	the currencies in which the price or prices of the rights may be payable;

•	the date of determining the security holders entitled to the rights distribution;

•	the number of the rights issued to each security holder;

•	the extent to which the rights are transferable;

•	if applicable, a discussion of the material United States federal income tax considerations applicable to the issuance or exercise of the rights;

•	the date on which the right to exercise the rights shall commence, and the date on which the rights shall expire (subject to any extension);

•	the conditions to completion of the rights offering;

•	any provisions for changes to or adjustments in the exercise price or number of securities issuable upon exercise of the rights;

•	the extent to which the rights include an over-subscription privilege with respect to unsubscribed securities;

•	if applicable, the material terms of any standby underwriting or other purchase arrangement that we may enter into in connection with the rights offering; and

•	any other terms of the rights, including terms, procedures and limitations relating to the exchange and exercise of the rights.

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(1)	Assumes that each of the selling stockholders will sell all shares of common stock registered under this prospectus directly held by it.

(2)

Andera Partners is the manager of BioDiscovery 4 FCPR and has voting and dispositive power over the shares held by BioDiscovery 4 FCPR. Raphaël Wisniewski, who is a member of our board of directors, is a partner of Andera Partners, and may be deemed to have voting and dispositive power over the shares held by BioDiscovery 4 FCPR. Mr. Wisniewski disclaims beneficial ownership of such shares. The mailing address of BioDiscovery 4 FCPR is 347 Rue Saint St Honoré, 75001 Paris Cedex 08 France.

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(3)

Longitude Capital Partners III, LLC is the General Partner of Longitude Venture Partners III, L.P. and may be deemed to share voting and investment power over the shares held by Longitude Venture Partners III, L.P. Juliet Tammenoms Bakker, who is a member of our board of directors, and Patrick G. Enright are managing members of Longitude Capital Partners III, LLC, and may be deemed to share voting and investment power over the shares held by Longitude Venture Partners III, L.P. Each of these individuals disclaims beneficial ownership of such shares, except to the extent of his or her pecuniary interest therein. The mailing address of Longitude Venture Partners III, L.P. is 2740 Sand Hill Road, 2nd Floor, Menlo Park, California 94025.

(4)

Consists of (i) 58,234 shares of common stock held by Advent Life Sciences LLP and (ii) 1,636,115 shares of common stock held by Advent Life Sciences Fund II LLP. Advent Life Sciences LLP is the general partner of Advent Life Sciences Fund II LLP and has voting and dispositive power over the shares held by Advent Life Sciences Fund II LLP. Dr. Shahzad Malik is a general partner of Advent Life Sciences LLP, and may be deemed to have voting and dispositive power over the shares held by Advent Life Sciences LLP. The mailing address of Advent Life Sciences LLP and Advent Life Sciences Fund II LLP is 158-160 North Gower Street, London, United Kingdom NWI 2ND.

(5)

NeoMed Innovation V Limited is the general partner of NeoMed Innovation V L.P. and has voting and dispositive power over the shares held by NeoMed Innovation V L.P. Erik Amble, who is a member of our board of directors, is a director of NeoMed Innovation V Limited, and may be deemed to have voting and dispositive power over the shares held by NeoMed Innovation V L.P. Mr. Amble disclaims beneficial ownership of such shares. Mr. Amble and certain of his family members own all of the share capital of AS Fansea, which is a minority stockholder of NeoMed Innovation V L.P. The mailing address of NeoMed Innovation V L.P. is 13 Castle Street, St. Helier, Y9 JE4 5UT.

(6)	Carl Christian Gilhuus-Moe is the chairman of N5 Investments AS and may be deemed to have voting and dispositive power over the shares held by N5 Investments AS. Mr. Gilhuus-Moe disclaims beneficial ownership of such shares. The mailing address of N5 Investments AS is Parkveien 55, N-0256 Oslo, Norway.

(7)

Consists of (i) 683,391 shares of common stock held by Mr. Cohen, (ii) 168,000 shares of common stock underlying stock options exercisable within 60 days of November 5, 2019, and (iii) 8,760 shares of common stock held by the Cielo Trust established March 30, 2018. Mr. Cohen is a trustee of the Cielo Trust established March 30, 2018, and as a result, shares voting and dispositive power over the shares held by it.

(8)	Consists of (i) 138,491 shares of common stock held by Mr. Dearen, and (ii) 314,982 shares of common stock underlying stock options exercisable within 60 days of November 5, 2019.

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•	through agents;

•	to or through underwriters;

•	to or through brokers or dealers;

•	directly to investors, including through a specific bidding, auction or other process;

•	directly to agents;

•	through a combination of any such methods of sale; or

•	by any other method permitted pursuant to applicable law.

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•	our Annual Report on Form 10-K for the fiscal year ended December 31, 2018, filed with the SEC on March 5, 2019, as amended by our Annual Report on Form 10-K/A for the year ended December 31, 2018, as filed with the SEC on April 30, 2019;

•	the information specifically incorporated by reference into our Annual Report on Form 10-K for the fiscal year ended December 31, 2018 from our Definitive Proxy Statement on Schedule 14A (other than information furnished rather than filed) filed with the SEC on July 9, 2019;

•	our Quarterly Reports on Form 10-Q for the quarter ended March 31, 2019 as filed with the SEC on May 8, 2019; and for the quarter ended June 30, 2019, as filed with the SEC on August 5, 2019;

•	our Current Reports on Form 8-K (other than information furnished rather than filed) filed with the SEC on March 5, 2019, April 12, 2019, June 11, 2019, July 12, 2019, August 22, 2019, September 9, 2019 and November 6, 2019; and

•	the description of our common stock contained in our Registration Statement on Form 8-A filed with SEC on October 25, 2018, including any amendment or report filed for the purpose of updating such description.

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•	transaction from which the director derives an improper personal benefit;

•	act or omission not in good faith or that involves intentional misconduct or a knowing violation of law;

•	willful or negligent violations of Delaware law governing the authorizations of dividends, stock repurchases, and redemptions, as provided in Section 174 of the DGCL; or

•	breach of a director’s duty of loyalty to the corporation or its stockholders.

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*	To be filed, if necessary, by amendment or pursuant to a report to be filed pursuant to Section 13 or 15(d) of the Exchange Act, if applicable, and incorporated herein by reference.

**	To be filed pursuant to Section 305(b)(2) of the Trust Indenture Act of 1939.

†	The Registrant has received confidential treatment with respect to certain omitted portions of this exhibit.

(a)	To file during any period in which offers or sales are being made, a post-effective amendment to this registration statement:

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(b)	That, for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(c)	To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

(d)	That, for the purpose of determining liability under the Securities Act of 1933 to any purchaser:

(e)

That, for the purpose of determining liability of the registrant under the Securities Act of 1933 to any purchaser in the initial distribution of the securities, the undersigned registrant undertakes that in a primary offering of securities of the undersigned registrant pursuant to this registration statement, regardless of the underwriting method used to sell the securities to the purchaser, if the securities are offered or sold to such purchaser by means of any of the following communications, the undersigned registrant will be a seller to the purchaser and will be considered to offer or sell such securities to such purchaser:

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(f)

That, for purposes of determining any liability under the Securities Act of 1933, each filing of the registrant’s annual report pursuant to section 13(a) or section 15(d) of the Securities Exchange Act of 1934 (and, where applicable, each filing of an employee benefit plan’s annual report pursuant to section 15(d) of the Securities Exchange Act of 1934) that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(g)	To file an application for the purpose of determining the eligibility of the trustee to act under subsection (a) of Section 310 of the Trust Indenture Act in accordance with the rules and regulations prescribed by the SEC under Section 305(b)(2) of the Trust Indenture Act.

(h)

Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue.

(i)

That, for purposes of determining any liability under the Securities Act of 1933, the information omitted from the form of prospectus filed as part of this registration statement in reliance upon Rule 430A and contained in a form of prospectus filed by the registrant pursuant to Rule 424(b) (1) or (4) or 497(h) under the Securities Act shall be deemed to be part of this registration statement as of the time it was declared effective.

(j)	That, for the purpose of determining any liability under the Securities Act of 1933, each post-effective amendment that contains a form of prospectus shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

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