Mersana Supplier Portal

Mersana is committed to ensuring compliance and integrity in our purchasing practices and in our relationships with suppliers. To that end, all goods and services purchased by Mersana require an approved purchase order prior to the delivery of goods or services. Failure to comply with this requirement may result in one or more of the following: delays in invoice processing, impact on preferred relationship standing, exercise of applicable termination rights or exercise of other remedies. As such, Mersana requires suppliers to create their own accounts in Mersana’s Supplier Portal. Suppliers will be responsible for the accuracy and completeness of their account information and for effecting any updates to their information as necessary. Notwithstanding the foregoing, updating account information in Mersana’s Supplier Portal does not constitute legal notice under any written agreement between Mersana and the supplier or any purchase order issued by Mersana to the supplier.

Supplier User Manual


Registration Form


Who do I contact with registration or account questions?

How long is my account active for?

If you are actively doing business with Mersana, your account will be active. If you are inactive for 18th months, your account will be deactivated.  Your account can always be reactivated by contacting

What is Mersana’s preferred method of payment?


Who is responsible for maintaining my supplier account?

You are responsible for all the content in your account

How long does it take for my account to be ready for use?

2-3 business days

Any and all personal information shard is subject to Mersana’s Privacy Policy.