Why People Ask This Question
If you found eSignature Guarantee by searching online and you’re wondering whether we’re legitimate, that’s a perfectly reasonable reaction. Medallion signature guarantees involve sensitive financial documents — stock certificates, estate transfers, account ownership changes. The stakes are real, and the process is unfamiliar to most people. Many customers come to us because their bank or broker either doesn’t offer medallion guarantees or turned them away, so they’re already frustrated and understandably cautious about trusting an online service they’ve never heard of.
This article lays out the facts so you can make an informed decision.
We Are an Authorized STAMP Program Participant
eSignature Guarantee is an authorized participant in the Securities Transfer Agents Medallion Program (STAMP), one of three medallion programs recognized under SEC Rule 17Ad-15. This is the same regulatory framework that governs medallion guarantees issued by banks, credit unions, and broker-dealers. Our stamps carry the same legal weight and are subject to the same compliance requirements as those issued by any other STAMP participant.
This is not a designation we gave ourselves. STAMP membership requires approval, ongoing compliance, and surety bonding. It is the foundation of our authority to issue medallion signature guarantees.
Track Record
eSignature Guarantee has been operating since 2017. In that time, we have issued more than 25,000 medallion stamps. Our guarantees are accepted by all major transfer agents, including Computershare, EQ (formerly Equiniti), BNY Mellon, and AST. These are the institutions that process the vast majority of securities transfers in the United States, and they accept our stamps because we meet the same standards as any other authorized guarantor.
Who Founded and Runs the Company
eSignature Guarantee was founded by Seth Farbman, a securities lawyer and owner of V Stock Transfer, an SEC-registered transfer agent, and Yoel Goldfeder, a corporate and securities attorney. The company was built by people who understood the medallion guarantee process from the inside — both the regulatory requirements and the real-world difficulties people face in obtaining one.
In July 2025, eSignature Guarantee was acquired by Jess Heron, who spent a decade working in fintech at companies including Ripple, Circle, and Pivotal. Under current leadership, the company continues to operate with the same commitment to compliance and customer service, with additional investment in technology and the customer experience.
You can learn more about the team on our About page.
Bonded and Insured
As a STAMP program participant, eSignature Guarantee maintains a surety bond as required by the program. We also carry professional errors and omissions insurance. This means that in the unlikely event that something goes wrong with a guarantee we issue, there is financial backing behind our obligation. This is not optional — it is a requirement of our participation in the program, and it exists to protect you and the institutions that rely on our stamps.
How Our Process Works
We do not rubber-stamp documents. Every transaction goes through a structured process that includes identity verification, document review, and compliance checks. Here is what that looks like in practice:
Identity verification. You create an account and complete our secure identity verification process. We confirm that you are who you say you are before we review any documents.
Document submission and review. You submit the documents that need to be stamped, along with any supporting documentation required for your specific transaction type. A compliance officer reviews everything to confirm that the documents are complete, properly signed, and that the signer has the legal authority to act.
Medallion application. Once your documents pass review, we apply the physical medallion stamp. Each stamp includes a unique identification number that can be verified by the receiving transfer agent.
Document return. Your stamped documents are returned to you via 2-day shipping, along with scanned copies sent by email.
This process exists because the medallion guarantee is a serious legal instrument. We accept liability for the authenticity of every signature we guarantee. That liability is what makes the stamp meaningful, and it is why we take the review process seriously.
For a detailed walkthrough, see The eSignature Process: What to Expect.
What Happens If Something Goes Wrong
Sometimes a transfer agent will reject a submission for reasons unrelated to the medallion stamp itself — a form filled out incorrectly, a missing document, or a procedural issue on the transfer agent’s end. When that happens, we work with you to resolve the problem. If your documents need to be re-stamped due to a correction, we do not charge you again for the same transaction.
Our goal is to get your transfer completed, not just to apply a stamp. Our support team is available to help you through any issues that come up during or after the process.
The Bottom Line
eSignature Guarantee exists because getting a medallion signature guarantee is unnecessarily difficult for most people. Banks turn customers away. Brokers impose account minimums or don’t offer the service at all. We provide a straightforward alternative: pricing from $300, with processing typically within 5 business days, a clear process, and the same legally recognized stamp you would get from any other authorized STAMP participant.
We have been doing this since 2017, we have issued tens of thousands of stamps, and our guarantees are accepted by every major transfer agent in the country. Your skepticism is reasonable. We hope the facts speak for themselves.
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The eSignature Process: What to Expect