Date of Last Revision: April 7, 2026

These terms and conditions of use (these “Terms and Conditions”) explain how you may use this website and any of its content (the “Website”) of Viridian Therapeutics, Inc. (“Viridian”, “we”, “us”, “our”) and our affiliates.

PLEASE READ THESE TERMS AND CONDITIONS CAREFULLY. THESE TERMS AND CONDITIONS CONSTITUTE A LEGALLY BINDING AGREEMENT BETWEEN YOU AND VIRIDIAN REGARDING YOUR USE OF THE WEBSITE. BY USING, ACCESSING, OR DOWNLOADING THE WEBSITE, YOU CONFIRM THAT YOU ACCEPT THESE TERMS AND CONDITIONS AND YOU AGREE TO COMPLY WITH THEM. YOU ALSO ACKNOWLEDGE THAT YOU HAVE REVIEWED THE TERMS OF VIRIDIAN’S PRIVACY POLICY.

IF YOU DO NOT AGREE TO THESE TERMS AND CONDITIONS OR THE TERMS OF OUR PRIVACY POLICY, YOU MUST NOT ACCESS OR USE THE WEBSITE.

Privacy Policy and Cookies

Your privacy is important to us. We encourage you to read our Privacy Policy to understand our privacy practices (such as how we collect, use and share your personal information), so that you may make an informed decision about using the Website. By using the Website, you acknowledge that your personal information will be processed as described in that Privacy Policy.

For information about cookies and similar technologies, please see our Cookie Policy.

Changes to these Terms and Conditions and to the Website

Viridian may modify the Website and these Terms and Conditions from time to time. The updated terms and conditions will be posted on the Website and are effective when posted (please see the ‘date of last revision’ above). Please check these Terms and Conditions each time you use the Website to ensure you understand the Terms and Conditions that apply at that time. By continuing to use the Website after any changes are made to these Terms and Conditions you will be accepting such changes. If you do not agree to any changes or modifications to these Terms and Conditions, you must stop using the Website.

Scope of Use: Viridian will allow you to view and use the Website with an individual device for your informational use only. This permission does not allow you to exploit, redistribute, or commercially re-use the Website’s content, except as otherwise permitted by applicable law or these Terms and Conditions. Except as otherwise provided by applicable law or these Terms and Conditions, no content or software on the Website may be copied, downloaded or stored in a retrieval system for any other purpose, nor may it be redistributed for any purpose, without our prior written permission. You understand that Viridian may discontinue, change, or restrict your use of the Website for any reason without notice.
No text or data mining, or web scraping: You shall not conduct, facilitate, authorise or permit any text or data mining or web scraping in relation to our site or any services provided via, or in relation to, our Website for any purpose, including the development, training, fine-tuning or validation of artificial intelligence (“AI”) systems or models. This includes using (or permitting, authorising or attempting the use of):
- Any “robot”, “bot”, “spider”, “scraper” or other automated device, program, tool, algorithm, code, process or methodology to access, obtain, copy, monitor or republish any portion of our site or any data, content, information or services accessed via the same.
- Any automated analytical technique aimed at analysing text and data in digital form to generate information or develop, train, fine-tune or validate AI systems or models which includes but is not limited to patterns, trends and correlations.
- The provisions in this section should be treated as an express reservation of our rights in this regard, including for the purposes of Article 4(3) of the Digital Copyright Directive ((EU) 2019/790).
- You shall not use, and we do not consent to the use of, our Website, or any data published by, or contained in, or accessible via, our Website or any services provided via, or in relation to, our Website for the purposes of developing, training, fine-tuning or validating any AI system or model.
This section will not apply insofar as (but only to the extent that) we are unable to exclude or limit text or data mining or web scraping activity by contract under the laws which are applicable to us.
No Warranties: TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, ALL CONTENT ON THE WEBSITE IS PROVIDED TO YOU “AS IS” AND “AS AVAILABLE” WITHOUT WARRANTY OF ANY KIND EITHER EXPRESS OR IMPLIED, INCLUDING (WHERE PERMITTED BY APPLICABLE LAW) ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, ACCURACY, AND NON-INFRINGEMENT. VIRIDIAN MAKES NO WARRANTY AS TO THE ACCURACY, COMPLETENESS, CURRENCY, OR RELIABILITY OF ANY CONTENT AVAILABLE THROUGH THE WEBSITE. YOU ARE RESPONSIBLE FOR VERIFYING ANY INFORMATION BEFORE RELYING ON IT. THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, USE OF THE WEBSITE AND THE CONTENT AVAILABLE ON THE WEBSITE IS AT YOUR SOLE RISK. VIRIDIAN MAKES NO REPRESENTATIONS OR WARRANTIES THAT USE OF THE WEBSITE WILL BE UNINTERRUPTED OR ERROR-FREE. YOU ARE RESPONSIBLE FOR TAKING ALL NECESSARY PRECAUTIONS TO ENSURE THAT ANY CONTENT YOU MAY OBTAIN FROM THE WEBSITE IS FREE OF VIRUSES.

THE RELEVANT EXCLUSIONS ABOVE WILL NOT APPLY IN JURISDICTIONS THAT DO NOT ALLOW THE EXCLUSION OF CERTAIN IMPLIED WARRANTIES, SUCH AS IN RELATION TO CONSUMERS IN THE UNITED KINGDOM AND EUROPEAN UNION.
Limitation of Liability:

Whether you are a consumer or a business user: Nothing in these Terms and Conditions exclude or limit in any way our liability to you where it would be unlawful to do so. This includes liability for death or personal injury caused by our negligence or the negligence of our employees, agents or subcontractors and for fraud or fraudulent misrepresentation.

If you are (i) a consumer based outside of the EU and UK; or (ii) a business user:
- YOUR USE OF THE WEBSITE OR ANY CONTENT ON THE WEBSITE IS AT YOUR OWN RISK. TO THE MAXIMUM EXTENT PERMITTED BY LAW, VIRIDIAN, FOR OURSELVES AND OUR AFFILIATES, SPONSORS, LICENSORS, OR OUR OR THEIR RESPECTIVE DIRECTORS, MEMBERS, EMPLOYEES OR AGENTS SPECIFICALLY DISCLAIMS ANY LIABILITY, WHETHER BASED IN CONTRACT, TORT, STRICT LIABILITY OR OTHERWISE, FOR ANY DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, OR SPECIAL DAMAGES ARISING OUT OF OR IN ANY WAY CONNECTED WITH ACCESS TO OR USE OF THE WEBSITE, EVEN IF VIRIDIAN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, INCLUDING BUT NOT LIMITED TO RELIANCE BY ANY PARTY ON ANY CONTENT OBTAINED THROUGH THE USE OF THE WEBSITE, OR THAT ARISES IN CONNECTION WITH MISTAKES OR OMISSIONS IN, OR DELAYS IN TRANSMISSION OF, INFORMATION TO OR FROM THE USER, INTERRUPTIONS IN TELECOMMUNICATIONS CONNECTIONS TO THE WEBSITE OR VIRUSES, WHETHER CAUSED IN WHOLE OR IN PART BY NEGLIGENCE, ACTS OF GOD, TELECOMMUNICATIONS FAILURE, THEFT OR DESTRUCTION OF, OR UNAUTHORIZED ACCESS TO THE WEBSITE, OR RELATED INFORMATION OR PROGRAMS.
- YOU HEREBY AGREE TO RELEASE, REMISE AND FOREVER DISCHARGE THE WEBSITE, VIRIDIAN, AND OUR SPONSORS, LICENSORS, DIRECTORS, SHAREHOLDERS, OFFICERS, EMPLOYEES, REPRESENTATIVES, AGENTS, AND SUPPLIERS, AND ITS AND THEIR RESPECTIVE SUCCESSORS AND ASSIGNS, AND ALL OTHER RELATED PERSONS OR ENTITIES, FROM ANY AND ALL MANNER OF RIGHTS, CLAIMS, COMPLAINTS, SUITS, DEMANDS, CAUSES OF ACTION, PROCEEDINGS, LIABILITIES, OBLIGATIONS, LEGAL FEES, COSTS, AND DISBURSEMENTS OF ANY NATURE WHATSOEVER, WHETHER KNOWN OR UNKNOWN, WHICH NOW OR HEREAFTER ARISE FROM, RELATE TO, OR ARE CONNECTED WITH YOUR USE OF THE WEBSITE OR ANY CONTENTS HEREUNDER.
IF YOU ARE A CALIFORNIA RESIDENT, YOU WAIVE CALIFORNIA CIVIL CODE SECTION 1542, WHICH STATES: “A GENERAL RELEASE DOES NOT EXTEND TO CLAIMS THAT THE CREDITOR OR RELEASING PARTY DOES NOT KNOW OR SUSPECT TO EXIST IN HIS OR HER FAVOR AT THE TIME OF EXECUTING THE RELEASE AND THAT, IF KNOWN BY HIM OR HER, WOULD HAVE MATERIALLY AFFECTED HIS OR HER SETTLEMENT WITH THE DEBTOR OR RELEASED PARTY” (OR ANY EQUIVALENT STATUTORY PROVISION WITH A SIMILAR IMPORT OR INTENT). IF YOU ARE A RESIDENT OF A STATE OTHER THAN CALIFORNIA, YOU EXPLICITLY WAIVE THE TERMS AND PROTECTIONS OF ANY STATUTE OF YOUR OWN STATE THAT HAS A SIMILAR IMPORT OR INTENT. To avoid doubt, this waiver does not apply to UK/EU users, and nothing in this section limits rights that cannot be waived under applicable law.

If you are a consumer user based in the UK or EU:
- If you are an EU/UK consumer user, we only provide our Website for domestic and private use. You agree not to use our Website for any commercial or business purposes, and we have no liability to you for any loss of profit, loss of business, business interruption, or loss of business opportunity.
- If you are an EU/UK consumer user and defective digital content that we have supplied damages a device or digital content belonging to you and this is caused by our failure to use reasonable care and skill, we will either repair the damage or pay you compensation. However, we will not be liable for damage that you could have avoided by following our advice to apply an update offered to you free of charge or for damage that was caused by you failing to correctly follow installation instructions or to have in place the minimum system requirements advised by us.
Indemnification: If you are either (i) a consumer based outside of the EU and UK; or (ii) a business user, you agree to indemnify, defend and hold us, our affiliates, sponsors, and our and their respective independent contractors, service providers, consultants, directors, officers, employees and agents, and applicable third parties (such as licensors, partners and advertisers) (collectively, the “Indemnified Parties”) harmless from and against any actual or threatened suit, demand or claims, damages, costs, liabilities and expenses (including, but not limited to, damage awards, settlement amounts, and reasonable attorneys’ fees) brought against any Indemnified Parties, arising out of or relating to: (a) your use of the Website, the contents hereunder, the User Content (as defined below) or any other information (including Feedback) available on the Website; (b) your conduct; (c) your failure to perform your obligations under these Terms and Conditions (including, but not limited to, your violation of these Terms and Conditions); and/or (d) your violation of the rights of any third party.

If you are a consumer user based in the UK or EU, you are responsible for ensuring that any content that you provide complies with the standards outlined in the ‘Prohibited Submissions and Acceptable Use’ provision set out below.
Trademarks: The names, trademarks, logos, and service marks (collectively, the “trademarks”) displayed on the Website are registered and unregistered trademarks of Viridian and others. Nothing contained in the Website should be construed as granting, by implication, estoppel, or otherwise, any license or right in and to the trademarks. You may not use any trademark without the relevant owner’s prior written permission. Unauthorized use of any trademark may be a violation of federal and state trademark laws.
Copyright: This Website and all content are protected by United States’ and other copyright laws. We and our licensors reserve all rights. Except for your informational, personal, non-commercial use as authorized above, you may not modify, reproduce or distribute the design or layout of the Website, or individual sections of the design or layout of the Website or Viridian logos, without Viridian’s written permission.
Links to Third Party Websites: This Website may contain links to websites operated by other parties. The linked websites are not under the control of Viridian, and Viridian is not responsible for the content available on any other Internet websites linked to this Website. Such links do not imply Viridian’s endorsement of material on any other website. When you leave the Website, you should be aware that our terms and policies no longer govern. You should review the applicable terms and policies, including privacy and data gathering practices, of any website to which you navigate from this Website. Without limiting the generality of the foregoing, we shall not be responsible for and have no control over any privacy or security practices of any third-party Website’s collection, storage, use or disclosure of your information.
No Deep Linking: You agree that you are only authorized to visit and view pages of this Website for your own personal use, and that you shall not duplicate, download, publish, modify or otherwise distribute the material on this Website except for your personal use, unless otherwise specifically authorized by us in writing to do so. You also agree not to deep-link to the Website for any purpose, unless specifically authorized by us in writing to do so. The content and software on this Website is our property or that of our sponsors, suppliers, or licensors and is protected by U.S. and international copyright laws. We post a legal notice and various credits on pages of the Website, which may not be removed. Please do not remove this notice or these credits, or any additional information contained along with the notices and credits.
User Submissions: Certain areas of this Website may enable you to access online forums and to submit e-mails, or otherwise provide feedback to Viridian. We provide the Website solely as a service provider, as such term is defined by various laws, including the Digital Millennium Copyright Act of 1998 (“DMCA”) and Section 230 of the Communications Decency Act (“CDA”). As such, although we prohibit certain activities in these Terms and Conditions, we do not control and take no responsibility or liability for any content posted, stored or uploaded by you or any third party (“User Content”), or for any loss or damage thereto, nor are we liable for any mistakes, defamation, slander, libel, omissions, falsehoods, obscenity or profanity you may encounter by use of the Website. Your use of the Website is at your own risk. As a provider of interactive services, we are not liable for any statements, representations or content provided by our users in any public gallery, forum, personal home page or other interactive area. We have no obligation to screen, edit or monitor any User Content posted on the Website. We also do not endorse, support, represent, verify, approve, sponsor, or guarantee the completeness, truthfulness, accuracy, or reliability of any User Content or Feedback (as defined below). The views expressed by other users on our Website do not represent our views or values. In addition, Viridian reserves the right, but not the obligation, to monitor, delete, move or edit content, in whole or in part, submitted to the forums that it, in its sole discretion, deems abusive, defamatory, obscene, in violation of intellectual property, privacy, or other proprietary rights, in violation of these terms and conditions, or for any other reason.

By submitting content, you hereby grant to Viridian the irrevocable, worldwide, royalty-free, non-exclusive, transferable right to use, copy, modify, publish, perform, transmit, reproduce, distribute, prepare derivative works of, perform and display such content via any media in accordance with Viridian’s Privacy Policy, and (to the extent permitted by applicable law) waive any moral rights you may have in such content. Subject to Viridian’s Privacy Policy, Viridian shall be free to use such content, including any ideas, concepts, know-how, or techniques contained in such content, or that you otherwise provide by email or any other medium (“Feedback”), for any reason whatsoever.
Feedback: All Feedback will, to the maximum extent permissible under applicable laws, automatically become our sole property, and you hereby assign to us, exclusively and throughout the world, all rights, title, and interests in such Feedback, all intellectual property rights embodied therein, and otherwise, you hereby grant us a perpetual, irrevocable, worldwide, fully-paid up, royalty free, assignable, sublicensable license to use, reproduce, display, create derivative works of, make, sell, have made, have sold, import, export or otherwise exploit any such Feedback. You are not entitled to any acknowledgment, compensation or reimbursement in connection with such Feedback or grant of rights to same. By providing such Feedback, you acknowledge and agree that: (a) your Feedback does not contain confidential or proprietary information; (b) we are not under any obligation of confidentiality, express or implied, with respect to the Feedback; (c) we will be entitled to use or disclose (or choose not to use or disclose) any Feedback for any purpose, in any way, in any media worldwide; and (d) we may have something similar to the Feedback already under consideration or in development.
Prohibited Submissions and Acceptable Use: The Website is available for access and use by you solely for lawful purposes. Any action by you or associated with your account that we believe, acting reasonably in our sole and absolute discretion: (a) violates these Terms and Conditions; (b) violates any applicable law, statute, court order, regulation or ordinance (including, without limitation, those governing export control, consumer protection, unfair or deceptive practices, and false advertising); (c) restricts, inhibits, disrupts, interferes with, limits, or prevents access or use by anyone of the Website; or (d) through the use of the Website, abuses, defames, harasses, libels, disparages or threatens another user of the Website or any other third party, is strictly forbidden. You also may NOT:
- take any action that attempts to impersonate, deceive, or defraud any person or entity;
- harvest, otherwise collect, store, post or share personal information about users or any other third parties, including e-mail addresses, postal addresses, and phone numbers, or otherwise attempt to gain unauthorized access to any network, system, or personal information of anyone;
- use any robot, spider, crawler, scraper, bots or other automated means to access or use the Website;
- introduce or attempt to introduce software viruses, Trojan horses, worms, backdoors or any other malicious files or computer codes, or take any action that imposes or may impose an unreasonable or disproportionately large load on our technical infrastructure;
- post, upload to, store, create or otherwise publish through any Website any:
  - content that is unlawful, libelous, defamatory, obscene, harassing, threatening, abusive, inflammatory, fraudulent or otherwise objectionable or harmful;
  - unsolicited promotions, political campaigning, advertising or solicitations, spam, junk mail, chain letters, mass or bulk email, or pyramid schemes;
  - marketing or promotional materials;
  - purported or actual financial or other professional advice;
  - content that may infringe or violate any patent, trademark, trade secret, copyright or other intellectual or other proprietary right of ours or of any third party. By posting any content, you represent and warrant that you have the lawful right to use, display, distribute, and reproduce such content; or
  - content that you know or reasonably suspect is false, misleading, untruthful, deceptive, or inaccurate.
Copyright Complaints: We respect the intellectual property rights of others. If you are a copyright owner or an agent thereof and believe that any content infringes upon your copyrights, please send your written notification to the following physical mailing address and telephone number:

Viridian Therapeutics, Inc.
Attn: Legal Department
221 Crescent Street
Suite 103A
Waltham, MA 02453

T: +1 617 272 4600
Email: legal@nullviridiantherapeutics.com

Your notification must include the following information: (a) a physical or electronic signature of the copyright owner or a person authorized to act on their behalf; (b) identification of the copyrighted work claimed to have been infringed; (c) identification of the material that is claimed to be infringing or to be the subject of infringing activity, and information reasonably sufficient to permit us to locate the material; (d) your contact information, including your address, telephone number, and an email address; (e) a statement by you that you have a good faith belief that use of the material in the manner complained of is not authorized by the copyright owner, its agent, or the law; and (f) a statement that the information in the notification is accurate, and, under penalty of perjury, that you are authorized to act on behalf of the copyright owner.

In accordance with the DMCA and other applicable law, Viridian has adopted a policy of terminating, in appropriate circumstances and at its sole discretion, users who are deemed to be repeat infringers of the copyrights of others.
Registration and Account Security: Certain sections of the Website may require you to provide login information for access, which may include a username or other registration identifier, and a password (“Login Credentials”). You are responsible for keeping your Login Credentials confidential, and for all activities under your account. If you suspect unauthorised use, please notify us promptly at legal@nullviridiantherapeutics.com. We may disable your Login Credentials and/or suspend or terminate access where we reasonably believe there is a risk of breach of these Terms or misuse of the account.
Mobile and Internet Usage: By using the Website from your mobile phone, you understand that your wireless or internet services provider’s standard data rates may apply to your use of the Website. By using the Website, you agree to be responsible for any fees that are incurred as a result of your use of the Website. You hereby represent and warrant that you are the owner or authorized user of any mobile or other wireless device that you use to access the Website, and that you are authorized to approve all associated SMS, MMS and data charges.
Location & Governing Law: The Website is operated by Viridian from its offices in Massachusetts, USA. To reflect that our users may be located in different jurisdictions, the following applies:
- US users and business users: You agree that the laws of the Commonwealth of Massachusetts, without reference to its choice of law rules, will govern these Terms and Conditions and any dispute of any sort that might arise between you and Viridian relating to the Website.
- UK and EU consumers: these Terms and Conditions are governed by the laws of England and Wales, although if you are resident elsewhere in the UK or EU, you will retain the benefit of any mandatory protections given to you by the laws of that country. You may bring legal proceedings in the courts of England and Wales or in the courts of the part of the UK or EU member state where you live.
Viridian makes no representation that the information in the Website is appropriate or available for use in locations outside of your country, and access to the Viridian Website from territories where the content of the Viridian Website may be illegal is prohibited. Those who choose to access the Viridian Website from other locations do so on their own initiative and are responsible for compliance with applicable local laws.
Violations and Additional Policies: Viridian reserves the right to seek all remedies available under applicable law and in equity for violations of the rules and regulations set forth in this Website, including, if permitted by applicable law, the right to block access from a particular Internet address to the Website.
Termination: To the extent permitted by applicable law and notwithstanding any of these Terms and Conditions, we may, without notice and in our sole discretion, to suspend or end your access to this Website if: (a) you breach these Terms and Conditions; (b) your use of the Website is unlawful, fraudulent, or materially harmful to us or other users; (c) we are required to do so by law or by a regulatory authority; or (d) a change in applicable law or regulatory requirements means that continuing to provide access to the Website (or part of it) is no longer lawful or reasonably practicable.
Communications between Viridian and You: When you visit the Website or send emails to us, you communicate with us electronically and consent to receive service communications from us electronically. We may communicate with you by: (a) email to your email address indicated in your communications with us, (b) posting general notices on the Website, or (c) posting messages that are displayed to you when you log in to or access the Website. You agree that all agreements, notices, disclosures and other communications that we provide to you electronically satisfy any legal requirement that such communications be in writing. For more information about how we use your personal information and your rights, please see our Privacy Policy.
Notices; Contacts: All notices, demands and other communications hereunder shall be in writing and shall be effective upon receipt, provided that we may provide notice to you by posting announcements on the Website or sending an e-mail to you at the e-mail address that is currently associated with your account if you have one, or as otherwise provided under Section 18 (Communications between Viridian and You) above. Any such e-mail notice to you will be deemed given on the day it is sent. Except as specified in the next sentence, all notices to us of a legal nature shall be in writing and shall be sent by certified first-class U.S. mail, return receipt requested, to:

Viridian Therapeutics, Inc.
Attn: Legal Department
221 Crescent Street
Suite 103A
Waltham, MA 02453

T: +1 617 272 4600
F: +1 617 272 4601

All notices regarding copyright or other intellectual property infringement issues shall be sent in accordance with our intellectual property policy described above under the heading “Copyright Complaints.” If you have any questions about these Terms and Conditions, then please contact us at legal@nullviridiantherapeutics.com or the address set forth above.
Assignment: You may not assign any of your rights and obligations under these Terms and Conditions without our prior written consent. We reserve the right to assign or transfer our rights and obligations under these Terms and Conditions, and will provide a notice if we do so.
Void Where Prohibited: Viridian reserves the right to restrict the sale or use of our products or services to any person, geographic region or jurisdiction or otherwise. Any offer made on the Website is void where prohibited.
Severability: If any provision of these Terms and Conditions is found to be void or unenforceable, then the remainder will have full force and effect, and the invalid provision will be partially enforced to the maximum extent permitted by applicable law to effectuate the purpose of these Terms and Conditions.