• Once someone at Moderna raises a request to add your organization as a supplier, you will receive an onboarding email (from an Ariba domain) with a link to Moderna’s onboarding questionnaire. Please complete and return the questionnaire as soon as possible.
  Please reach out to supplierinfo@modernatx.com with any questions regarding the onboarding process.

• You will need to create a new Ariba account to access the questionnaire. This will not establish an Ariba trading relationship with Moderna. We recommend creating a free “standard” account.
• If you already have an existing Ariba account, you still need to create a new account for the questionnaire. You will be able to use your existing account to transact with Moderna once established as a supplier. More details will be provided at the time you receive your first purchase order.

• An invitation to connect with Moderna on the Ariba Network will be included with your first Moderna purchase order email. Once your PO is received, please click the “process order” button and log in to your existing Ariba account or create a new account. This will automatically form a trading relationship with Moderna and allow you view your orders and submit invoices in one convenient portal.
• An Ariba account is required to access the onboarding questionnaire. The account you create for onboarding can then be used for transactional activity (receiving POs and submitting invoices). Moderna has a strong preference for you to leverage your Ariba account for transactions however this is not mandatory. For assistance connecting with Moderna on the Ariba Network please reach out to p2p@modernatx.com.
• Ariba offers different account tiers depending on the needs of your business. You can find more information on Ariba account types here, using the Standard Account and Enterprise Account tabs. The Standard Account is free and includes unlimited POs and invoicing.
• If you are connecting with Moderna using an “enterprise” account, we invite you to review Ariba’s fee information to set expectations on potential costs.
• Click here for a helpful guide on using the Ariba Network to transact with Moderna.
• If you run into issues with Ariba Network, Ariba Support can be contacted through the Help Center.

This section provides detailed instructions to vendors supplying goods or services to U.S.-based Moderna entities on selecting and completing the correct IRS tax form, and is designed for internal Moderna reviewers and external vendors alike, ensuring compliance with U.S. tax withholding and reporting obligations. This includes:

• A simplified decision tree to help determine which tax form (W-8BEN, W-8BEN-E, W-8ECI, W-8IMY) is required based on residency status and type of service.
• Instructions for completing each form type, including field-by-field guidance and common pitfalls.
• A disclaimer clarifying vendor responsibilities, particularly around form accuracy and the impact of failing to provide proper documentation (e.g., application of 30% withholding tax).
• Direct links to official IRS forms and instructions for easy access and submission.

Moderna U.S. Tax Documentation Instructions

• IRS Form Instructions to foreign vendors conducting business in the U.S.(updated July 14, 2025)

IRS Forms and Instructions

• Form W-8BEN and Instructions
• Form W-8BEN-E and Instructions
• Form W-8ECI and Instructions
• Form W-8IMY and Instructions
• IRS Tax Treaty List (A to Z)

• All expenditures for goods and services require a PO prior to work commencing or goods being shipped. You should receive a PO number from Moderna or over the Ariba Network.
• Please follow all shipping instructions and requirements noted on the PO.
• Your Moderna PO will be emailed to you from an Ariba email domain. The order will be attached as a PDF. We encourage you to view all your Moderna PO’s on the Ariba Network using the “process order” button embedded in the email.
• Purchase orders for services will have a value of “1” each and the quantity will be equal to the value of the service being ordered.

• If you have a pending trading relationship request (TRR), any purchase orders cannot be processed until the agreement is accepted.
• We strongly encourage our trading partners to utilize the Ariba platform with a free “standard” account.

Terms and Conditions (Valid for Orders Placed as of 9/15/2025)

Terms and Conditions (Valid for Orders Placed 12/06/2024 through 9/14/2025)

Terms and Conditions (Valid for Orders Placed 7/30/2024 through 12/05/2024)

Terms and Conditions (Valid for Orders Placed 12/05/2022 through 7/30/2024)

Terms and Conditions (Valid for Orders Placed before 12/05/2022)

• All invoices must be submitted electronically. The preferred and most efficient method is via the Ariba Network. If your organization cannot support the use of Ariba, invoices will also be accepted by PDF to Invoice@modernatx.com. Please only choose one method of invoicing, not both.
• Invoices must include a PO number provided by Moderna on the face of the invoice when submitting for payment. Invoices without PO number will not be processed.
• Please submit your invoice in a timely manner just after goods are delivered or services rendered. Invoices are paid within the due date agreed contractually with Moderna.

• If your organization is based In Japan, Italy, France, or Hungary invoices must be emailed to Invoice@modernatx.com. Unfortunately, Ariba does not yet offer compliant invoicing in these countries.
• Please be informed Moderna’s payment terms are calculated from the date of invoice receipt in our system, not from the invoice date (except for invoices from France and Japan). Invoices submitted in Ariba are automatically pushed into our system.

• At Moderna, we strive for a sustainable supply chain with responsible sourcing practices, and we expect our partners and third parties to share the same values around sustainability, human rights and business ethics. We’ve outlined our standards as principles in our Third Party Code for compliance as the minimum requirement.

• We are committed to climate action with ambitious goals to reduce our emissions. In order to achieve our targets, we rely on collaboration with our value chain partners to strive for continual improvement in the measurement of emissions, commit to science-based targets, and develop and implement robust roadmaps.

• As a part of our Supplier Diversity Program, we embrace working with certified small, minority and diverse-owned businesses. We welcome any certified businesses to be involved in our opportunities. We also encourage our partners to include small, minority and diverse-owned businesses in their supply chains as well.

• We trust and rely on all of our partners to be catalysts for acting with integrity and doing the right thing. Our Speak Up Hotline empowers our business partners and third parties to submit a question or voice a concern that we may not be meeting the values that we strive to achieve every day. Any stakeholders in Moderna’s value chain may choose to submit reports anonymously, where permitted by law. We strictly prohibit retaliation under our Code of Business Conduct and Ethics.
• Please visit the Hotline portal