Paycheck Protection Program Promissory Note dated April 16, 2020

Exhibit 10.11

U.S. Small Business Administration Note

In return for the Loan, Borrower promises to pay to the order of Lender the amount of Three Hundred Thousand Three Hundred Ninety and 00/100 Dollars, interest on the unpaid principal balance, and all other amounts required by this Note.

“Collateral” means any property taken as security for payment of this Note or any guarantee of this Note.

“Guarantor” means each person or entity that signs a guarantee of payment of this Note.

“Loan” means the loan evidenced by this Note.

“Loan Documents” means the documents related to this loan signed by Borrower, any Guarantor, or anyone who pledges collateral.

“SBA” means the Small Business Administration, an Agency of the United States of America.

Borrower must make all payments at the place Lender designates. The payment terms for this Note are:

Borrower is in default under this Note if Borrower does not make a payment when due under this Note, or if Borrower or Operating Company:

Without notice or demand and without giving up any of its rights, Lender may:

Without notice and without Borrower’s consent, Lender may:

When SBA is the holder, this Note will be interpreted and enforced under federal law, including SBA regulations. Lender or SBA may use state or local procedures for filing papers, recording documents, giving notice, foreclosing liens, and other purposes. By using such procedures, SBA does not waive any federal immunity from state or local control, penalty, tax, or liability. As to this Note, Borrower may not claim or assert against SBA any local or state law to deny any obligation, defeat any claim of SBA, or preempt federal law.

Under this Note, Borrower and Operating Company include the successors of each, and Lender includes its successors and assigns.

By signing below, each individual or entity becomes obligated under this Note as Borrower.

This Statement of Policy is Posted   In Accordance with Regulations of the   Small Business Administration   This Organization Practices   Equal Employment Opportunity

We do not discriminate on the ground of race, color, religion, sex, age, disability or national origin in the hiring, retention, or promotion of employees; nor in determining their rank, or the compensation or fringe benefits paid them.

This Organization Practices

Equal Treatment of Clients

We do not discriminate on the basis of race, color, religion, sex, marital status, disability, age or national origin in services or accommodations offered or provided to our employees, clients or guests.

These policies and this notice comply with regulations

of the United States Government.

Please report violations of this policy to :

In order for the public and your employees to know their rights under 13 C.F.R Parts 112, 113, and 117, Small Business Administration Regulations, and to conform with the directions of the Administrator of SBA, this poster must be displayed where it is clearly visible to employees, applicants for employment, and the public.

Failure to display the poster as required in accordance with SBA Regulations may be considered evidence of noncompliance and subject you to the penalties contained in those Regulations.

Esta Declaración De Principios Se Publica De   Acuerdo Con Los Reglamentos De La   Agencia Federal Para el Desarrollo de la Pequen:a Empresa

Esta Organizacion Practica

lgual Oportunidad De Empleo

No discriminamos por razón de raza, color, religión, sexo, edad, discapacidad o nacionalidad en el empleo, retención o ascenso de personal ni en la determinación de sus posiciones, salarios o beneficios marginales.

Esta Organizacion Practica

Igualdad En El Trato A Su Clientela

No discriminamos por razón de raza, color, religión, sexo, estado civil, edad, discapacidad o nacionalidad en los servicios o facilidades provistos para nuestros empleados, clientes o visitantes.

Estos principios y este aviso cumplen con los reglamentos del Gobierno

de los Estados Unidos de América.

Favor de informar violaciones a lo aquí indicado a:

A fin de que el público y sus empleados conozcan sus derechos según lo expresado en las Secciones 112 , 113 y 117 del Codigo de Regulaciaones Federales No. 13, de los Reglamentos de la Agenc.ia Federal Para el Desarrollo de la Pequen:a Empresa y de acuerdo con las instrucciones del Administrador de dicha agencia, esta notificación debe fijarse en un lugar claramente visible para los empleados, solicitantes de empleo y público en general. No fijar esta notificación según lo requerido por los reglamentos de la Agencia Federal Para el Desarrollo de la Pequen:a Empresa, puede ser interpretado como evidencia de falta de cumplimiento de los mismos y conllevará la ejecución de los castigos impuestos en estos reglamentos.

Upon signing and submitting this loan agreement, a deposit in the amount of $300390.00 will be made into your Synovus account for LONGEVERON LLC within one to two business days. This amount will represent 100% of your loan proceeds for your loan 53452071-02 under the Paycheck Protection Program. As you are aware, no fees have been charged to you in connection with this loan, and these loan proceeds are to be used by you in accordance with the Paycheck Protection Program.

Please let us know if there is anything additional we can do for you. We’re here to help.

For assistance, call 1-888-SYNOVUS and say “SBA” to speak with a specialist.

Electronic Record and Signature Disclosure created on: 4/7/2020 2:20:57 PM

Parties agreed to: James Clavijo

ELECTRONIC RECORD AND SIGNATURE DISCLOSURE

From time to time, Synovus Financial Corp. (Main) (we, us or Company) may be required by law to provide to you certain written notices or disclosures. Described below are the terms and conditions for providing to you such notices and disclosures electronically through the DocuSign system. Please read the information below carefully and thoroughly, and if you can access this information electronically to your satisfaction and agree to this Electronic Record and Signature Disclosure (ERSD), please confirm your agreement by selecting the check-box next to ‘I agree to use electronic records and signatures’ before clicking ‘CONTINUE’ within the DocuSign system.

Getting paper copies

At any time, you may request from us a paper copy of any record provided or made available electronically to you by us. You will have the ability to download and print documents we send to you through the DocuSign system during and immediately after the signing session and, if you elect to create a DocuSign account, you may access the documents for a limited period of time (usually 30 days) after such documents are first sent to you. After such time, if you wish for us to send you paper copies of any such documents from our office to you, you will be charged a $0.00 per-page fee. You may request delivery of such paper copies from us by following the procedure described below.

Withdrawing your consent

If you decide to receive notices and disclosures from us electronically, you may at any time change your mind and tell us that thereafter you want to receive required notices and disclosures only in paper format. How you must inform us of your decision to receive future notices and disclosure in paper format and withdraw your consent to receive notices and disclosures electronically is described below.

Consequences of changing your mind

If you elect to receive required notices and disclosures only in paper format, it will slow the speed at which we can complete certain steps in transactions with you and delivering services to you because we will need first to send the required notices or disclosures to you in paper format, and then wait until we receive back from you your acknowledgment of your receipt of such paper notices or disclosures. Further, you will no longer be able to use the DocuSign system to receive required notices and consents electronically from us or to sign electronically documents from us.

All notices and disclosures will be sent to you electronically

Unless you tell us otherwise in accordance with the procedures described herein, we will provide electronically to you through the DocuSign system all required notices, disclosures, authorizations, acknowledgements, and other documents that are required to be provided or made available to you during the course of our relationship with you. To reduce the chance of you inadvertently not receiving any notice or disclosure, we prefer to provide all of the required notices and disclosures to you by the same method and to the same address that you have given us. Thus, you can receive all the disclosures and notices electronically or in paper format through the paper mail delivery system. If you do not agree with this process, please let us know as described below. Please also see the paragraph immediately above that describes the consequences of your electing not to receive delivery of the notices and disclosures electronically from us.

How to contact Synovus Financial Corp. (Main):

You may contact us to let us know of your changes as to how we may contact you electronically, to request paper copies of certain information from us, and to withdraw your prior consent to receive notices and disclosures electronically as follows:

To contact us by email send messages to: ***@***

To advise Synovus Financial Corp. (Main) of your new email address

To let us know of a change in your email address where we should send notices and disclosures electronically to you, you must send an email message to us at ***@*** and in the body of such request you must state: your previous email address, your new email address. We do not require any other information from you to change your email address.

If you created a DocuSign account, you may update it with your new email address through your account preferences.

To request paper copies from Synovus Financial Corp. (Main)

To request delivery from us of paper copies of the notices and disclosures previously provided by us to you electronically, you must send us an email to ***@*** and in the body of such request you must state your email address, full name, mailing address, and telephone number. We will bill you for any fees at that time, if any.

To withdraw your consent with Synovus Financial Corp. (Main)

To inform us that you no longer wish to receive future notices and disclosures in electronic format you may:

Required hardware and software

The minimum system requirements for using the DocuSign system may change over time. The current system requirements are found here: https://support.docusign.com/guides/signer-guide- signing-system-requirements.

Acknowledging your access and consent to receive and sign documents electronically

To confirm to us that you can access this information electronically, which will be similar to other electronic notices and disclosures that we will provide to you, please confirm that you have read this ERSD, and (i) that you are able to print on paper or electronically save this ERSD for your future reference and access; or (ii) that you are able to email this ERSD to an email address where you will be able to print on paper or save it for your future reference and access. Further, if you consent to receiving notices and disclosures exclusively in electronic format as described herein, then select the check-box next to ‘I agree to use electronic records and signatures’ before clicking ‘CONTINUE’ within the DocuSign system.

By selecting the check-box next to ‘I agree to use electronic records and signatures’, you confirm that: