Medallion Signature Guarantee: Definition and Uses
Secure your securities transfers with medallion signature guarantees explained.
What Is a Medallion Signature Guarantee?
A medallion signature guarantee is a specialized certification stamp issued by authorized financial institutions to authenticate signatures on securities transfer documents. It serves as an official verification that a signature is genuine and that the person signing has the legal authority to authorize the transfer or sale of securities. Unlike a standard notary signature, a medallion signature guarantee carries significant legal and financial weight, with the issuing institution accepting full liability for any fraudulent signatures.
The medallion signature guarantee was established through Securities and Exchange Commission Rule 17 Ad-15, which took effect on February 24, 1992. This program was created to protect investors, ensure equitable treatment of financial institutions, increase the efficiency of securities transfers, and reduce overall risk in the market. Today, it remains one of the most important safeguards in the securities industry.
When Do You Need a Medallion Signature Guarantee?
A medallion signature guarantee is required whenever you transfer or sell securities held in physical certificate form. This applies to various scenarios where ownership changes hands or accounts are reorganized. Common situations requiring a medallion signature guarantee include:
- Transferring securities from one person to another
- Selling physical securities certificates
- Inheriting securities and transferring them to your name
- Gifting securities to family members or others
- Transferring securities between different accounts
- Settling estates and transferring deceased individuals’ securities
It is important to note that you do not need a medallion signature guarantee if you are selling or transferring stocks through a broker. Brokers handle the transfer process internally and do not require this additional certification. The guarantee is specifically needed when dealing with physical certificates and direct transfers.
How Medallion Signature Guarantees Protect You
The primary purpose of a medallion signature guarantee is to prevent fraud and unauthorized transfers of securities. Transfer agents—the companies responsible for managing security transfers—require medallion signature guarantees because they provide multiple layers of protection.
For investors, a medallion signature guarantee makes it significantly more difficult for criminals to steal securities by forging your signature on certificates and related documents. The guarantee confirms that the financial institution has verified your identity and confirmed that you are the legal owner of the securities. This verification process acts as a powerful deterrent to would-be fraudsters.
For financial institutions, the guarantee limits their liability and protects them from losses resulting from forged signatures. Transfer agents particularly rely on these guarantees because they shift liability to the signature guarantor institution rather than leaving the transfer agent vulnerable to fraud losses.
Who Can Issue Medallion Signature Guarantees?
Not all financial institutions can provide medallion signature guarantees. Only institutions that participate in one of the three recognized Medallion Signature Guarantee Programs are authorized to issue these stamps. These programs include:
- The New York Stock Exchange Medallion Signature Program (NYSE)
- The Securities Transfer Agents Medallion Program (STAMP)
- The Stock Exchange Medallion Program (SEMP)
To become an authorized guarantor, a financial institution must meet strict SEC regulations and program requirements. Eligible providers include commercial banks, savings banks, credit unions, broker-dealers, trust companies, and clearing agencies. Each institution must submit surety bonds and demonstrate compliance with all program qualifications.
It is crucial to verify that any financial institution providing a medallion signature guarantee participates in one of these three official programs. Signature guarantees from non-participating institutions are not accepted by transfer agents and will be rejected.
Understanding Medallion Signature Guarantee Coverage Limits
Each medallion signature guarantee carries a maximum coverage amount that determines how much monetary value can be guaranteed in a single transaction. These coverage limits are determined by special coded prefixes assigned to each stamp. The prefix system helps ensure that the guaranteeing institution’s liability remains manageable and proportional to their surety bond.
Different prefixes correspond to different coverage levels. For example, a C prefix is suitable for transactions up to $500,000, while a D prefix covers only up to $250,000. If a transaction exceeds the coverage limit of the stamp presented, the transfer agent will reject the transaction automatically.
Coverage Limit Example
If you need to transfer securities worth $400,000, you would need a medallion signature guarantee with at least a C prefix, which guarantees coverage up to $500,000. If you were to submit a D prefix stamp with the same transaction, it would be rejected because the D prefix only covers up to $250,000. Similarly, if a transaction requires $1,000,000 in coverage, you would need a stamp with a higher prefix that supports that amount.
Some financial institutions offer medallion signature guarantees with coverage limits reaching up to $14,000,000 or higher. If your transaction exceeds the coverage limit of the institution you are working with, you may need to seek a guarantee from another authorized institution with higher coverage capacity.
The Application Process
To obtain a medallion signature guarantee, you must work with an authorized financial institution where you maintain an account. Most financial institutions will issue medallion signature guarantees only for existing customers. If you do not have an account with the institution, they are unlikely to provide the guarantee.
The process typically involves:
- Verifying your identity through official identification documents
- Confirming your legal authority to authorize the transfer
- Reviewing the securities certificates and transfer documents
- Witnessing your signature on the transfer documents
- Affixing the medallion signature guarantee stamp
The specific requirements and fees for obtaining a medallion signature guarantee vary by institution. Some financial institutions may charge a fee for this service, while others include it as part of their customer services. You should contact your financial institution directly to understand their specific requirements and any associated costs.
Medallion Signature Guarantees vs. Notary Services
It is important to understand that a medallion signature guarantee is not equivalent to a notary public signature. While both services involve signature authentication, they serve different purposes and carry different legal weight.
A notary public is authorized to acknowledge signatures and verify identity, but notary services cannot serve as a substitute for medallion signature guarantees in securities transactions. Notary publics are not bound to produce medallion signature guarantees, and transfer agents will not accept notarized signatures in place of medallion guarantees.
The key differences include:
- Medallion signature guarantees are issued only by authorized financial institutions participating in official programs
- Notary services can be provided by any licensed notary public
- Medallion signature guarantees carry significant financial liability for the issuing institution
- Notary signatures do not include institutional liability coverage
- Transfer agents require medallion signature guarantees, not notary signatures, for securities transfers
Validity and Expiration of Medallion Signature Guarantees
Technically, a medallion signature guarantee does not expire in the traditional sense. However, the guarantee is valid only for the specific transaction for which it was issued. The validity depends on the context and timing of that particular transaction.
A medallion signature guarantee is intended to be used immediately or shortly after issuance. Its purpose is to verify the authenticity and legal authority of your signature at the exact time of the transaction. If there is a significant delay between when the guarantee is issued and when the transaction is completed, you may need to obtain a new guarantee. Transfer agents may question the validity of an older guarantee if too much time has passed.
Special Considerations for Different Scenarios
Inherited Securities
If you inherit securities from a deceased family member, you will need a medallion signature guarantee to transfer those securities into your name. This protects both you and the transfer agent by confirming that you have the legal authority to request the transfer as the legitimate heir.
Securities as Gifts
When gifting securities to another person, both you and the recipient may need to provide medallion signature guarantees, depending on how the transfer is structured. The guarantees confirm that both parties understand and authorize the transfer.
Estate Settlement
Handling the securities of a deceased individual requires medallion signature guarantees from the executor or administrator of the estate to prove their legal authority to manage and transfer those securities.
How to Obtain Your Medallion Signature Guarantee
Here are the steps to follow when seeking a medallion signature guarantee:
- Contact your financial institution and ask if they provide medallion signature guarantees
- Confirm they participate in one of the three official Medallion programs
- Provide all required documentation, including the securities certificates and transfer documents
- Bring valid government-issued identification for identity verification
- Meet with an authorized bank officer to sign the documents in their presence
- Request the medallion signature guarantee stamp on your transfer documents
- Ask about any associated fees and coverage limits
Frequently Asked Questions
Q: What is the difference between a medallion signature guarantee and a notary signature?
A: A medallion signature guarantee is a certification issued only by authorized financial institutions that carry significant liability. A notary signature is provided by any licensed notary and does not include institutional liability. Transfer agents require medallion signatures for securities transfers, not notary signatures.
Q: How long is a medallion signature guarantee valid?
A: A medallion signature guarantee does not technically expire, but it is valid only for the specific transaction for which it was issued. If significant time passes between issuance and use, you may need to obtain a new guarantee.
Q: Can I get a medallion signature guarantee if I’m not a customer of a financial institution?
A: Most financial institutions will only issue medallion signature guarantees for existing customers. If you don’t have an account with an institution, they are unlikely to provide the guarantee.
Q: What if my transaction exceeds the coverage limit of the medallion guarantee?
A: If your transaction exceeds the coverage limit, you will need a medallion guarantee with a higher prefix that supports that amount, or you may need to seek a guarantee from another authorized institution with higher coverage capacity.
Q: Do I need a medallion signature guarantee if I sell stocks through a broker?
A: No. You only need a medallion signature guarantee when transferring or selling physical securities certificates directly. Brokers handle transfers internally and do not require this certification.
Q: What happens if a signature on a medallion guarantee turns out to be forged?
A: If a signature is fraudulent, the financial institution that issued the medallion signature guarantee accepts full liability up to the coverage limit of that guarantee stamp.
References
- SEC Rule 17 Ad-15 and Medallion Signature Guarantee Program — U.S. Securities and Exchange Commission. 1992. https://www.sec.gov
- Medallion Signature Guarantees: Preventing the Unauthorized Transfer of Securities — Investor.gov, U.S. Securities and Exchange Commission. https://www.investor.gov/introduction-investing/investing-basics/glossary/medallion-signature-guarantees-preventing
- What is a Medallion Signature Guarantee and How Do You Get One? — PNC Financial Services Group, Inc. 2024. https://www.pnc.com/insights/personal-finance/protect/what-is-medallion-signature-guarantee.html
- Medallion Signature Guarantees — National Bank of Middlebury. https://nbmvt.com/personal/medallion-signature-guarantees/
- What is a Medallion Guarantee? — Computershare. https://www.computershare.com/us/what-is-a-medallion-guarantee
- Medallion Signature Guarantee – Corporate Finance Institute — Corporate Finance Institute. https://corporatefinanceinstitute.com/resources/wealth-management/medallion-signature-guarantee/
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