EX-10.1





 Exhibit 10.1 

THIS PROMISSORY NOTE (THIS “NOTE”) HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES
ACT”). THIS NOTE HAS BEEN ACQUIRED FOR INVESTMENT ONLY AND MAY NOT BE SOLD, TRANSFERRED OR ASSIGNED IN THE ABSENCE OF REGISTRATION OF THE RESALE THEREOF UNDER THE SECURITIES ACT OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY IN FORM,
SCOPE AND SUBSTANCE TO THE COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED. 
 RMG SPONSOR VI, LLC 

PROMISSORY NOTE 
  

			
	Principal Amount: Up to U.S.$300,000	  	Dated as of February 17, 2021

 FOR VALUE RECEIVED and subject to the terms and conditions set forth herein, RMG Sponsor VI, LLC, a Delaware
limited liability company (“Maker”), promises to pay to MKC Investments LLC (“Payee”), or order, the principal sum of Three Hundred Thousand U.S. Dollars (U.S.$300,000) or such lesser amount as shall have been
advanced by Payee to Maker and shall remain unpaid under this Note on the Maturity Date (as defined below) in lawful money of the United States of America, on the terms and conditions described below. All payments on this Note shall be made by check
or wire transfer of immediately available funds or as otherwise determined by Maker to such account as Payee may from time to time designate by written notice in accordance with the provisions of this Note. 

1. Principal. The entire unpaid principal balance of this Note shall be due and payable in full on the earlier of: (i) December 31, 2021, and
(ii) the date on which RMG Acquisition Corp. VI consummates an initial public offering of its securities (such earlier date of (i) and (ii), the “Maturity Date”), unless accelerated upon the occurrence of an Event of
Default (as defined below). The principal balance may be prepaid at any time by Maker, at its election and without penalty. Under no circumstances shall any individual, including but not limited to any officer, director, employee or shareholder of
Maker, be obligated personally for any obligations or liabilities of Maker hereunder. 
 2. Drawdown Requests. Maker and Payee agree that Maker may
request, from time to time, up to Three Hundred Thousand U.S. Dollars (U.S.$300,000) in draw downs under this Note. The principal of this Note may be drawn down from time to time prior to the Maturity Date upon request from Maker to Payee (each, a
“Drawdown Request”). Each Drawdown Request must state the amount to be drawn down, and must not be an amount less than Ten Thousand U.S. Dollars (U.S. $10,000) unless agreed upon by Maker and Payee. Payee shall fund each Drawdown
Request no later than three (3) business days after receipt of a Drawdown Request; provided, however, that the maximum amount of drawdowns outstanding under this Note at any time may not exceed Three Hundred Thousand U.S. Dollars
(U.S.$300,000). No fees, payments or other amounts shall be due to Payee in connection with, or as a result of, any Drawdown Request by Maker. 
 3.
Interest. No interest shall accrue on the unpaid principal balance of this Note. 
 4. Application of Payments. All payments shall be applied
first to payment in full of any costs incurred in the collection of any sum due under this Note, including (without limitation) reasonable attorney’s fees, then to the payment in full of any late charges and finally to the reduction of the
unpaid principal balance of this Note. 












 5. Events of Default. The following shall constitute an event of default (“Event of
Default”): 
 (a) Failure to Make Required Payments. Failure by Maker to pay the principal amount due pursuant to this Note
on the Maturity Date. 
 (b) Voluntary Bankruptcy, Etc. The commencement by Maker of a voluntary case under any applicable bankruptcy,
insolvency, reorganization, rehabilitation or other similar law, or the consent by it to the appointment of or taking possession by a receiver, liquidator, assignee, trustee, custodian, sequestrator (or other similar official) of Maker or for any
substantial part of its property, or the making by it of any assignment for the benefit of creditors, or the failure of Maker generally to pay its debts as such debts become due, or the taking of corporate action by Maker in furtherance of any of
the foregoing. 
 (c) Involuntary Bankruptcy, Etc. The entry of a decree or order for relief by a court having jurisdiction in the
premises in respect of Maker in an involuntary case under any applicable bankruptcy, insolvency or other similar law, or appointing a receiver, liquidator, assignee, custodian, trustee, sequestrator (or similar official) of Maker or for any
substantial part of its property, or ordering the winding-up or liquidation of its affairs, and the continuance of any such decree or order unstayed and in effect for a period of sixty (60) consecutive
days. 
 6. Remedies. 
 (a) Upon the
occurrence of an Event of Default specified in Section 5(a) hereof, Payee may, by written notice to Maker, declare this Note to be due immediately and payable, whereupon the unpaid principal amount of this Note, and all other amounts payable
thereunder, shall become immediately due and payable without presentment, demand, protest or other notice of any kind, all of which are hereby expressly waived, anything contained herein or in the documents evidencing the same to the contrary
notwithstanding. 
 (b) Upon the occurrence of an Event of Default specified in Sections 5(b) or 5(c), the unpaid principal balance of this
Note, and all other sums payable with regard to this Note, shall automatically and immediately become due and payable, in all cases without any action on the part of Payee. 

7. Waivers. Maker and all endorsers and guarantors of, and sureties for, this Note waive presentment for payment, demand, notice of dishonor, protest,
and notice of protest with regard to the Note, all errors, defects and imperfections in any proceedings instituted by Payee under the terms of this Note, and all benefits that might accrue to Maker by virtue of any present or future laws exempting
any property, real or personal, or any part of the proceeds arising from any sale of any such property, from attachment, levy or sale under execution, or providing for any stay of execution, exemption from civil process, or extension of time for
payment; and Maker agrees that any real estate that may be levied upon pursuant to a judgment obtained by virtue hereof, on any writ of execution issued hereon, may be sold upon any such writ in whole or in part in any order desired by Payee. 

8. Unconditional Liability. Maker hereby waives all notices in connection with the delivery, acceptance, performance, default or enforcement of the
payment of this Note, and agrees that its liability shall be unconditional, without regard to the liability of any other party, and shall not be affected in any manner by any indulgence, extension of time, renewal, waiver or modification granted or
consented to by Payee, and consents to any and all extensions of time, renewals, waivers, or modifications that may be granted by Payee with respect to the payment or other provisions of this Note, and agrees that additional makers, endorsers,
guarantors, or sureties may become parties hereto without notice to Maker or affecting Maker’s liability hereunder. 

  
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 9. Notices. All notices, statements or other documents which are required or contemplated by this
Note shall be: (i) in writing and delivered personally or sent by first class registered or certified mail, overnight courier service or facsimile or electronic transmission to the address designated in writing, (ii) by facsimile to the number
most recently provided to such party or such other address or fax number as may be designated in writing by such party or (iii) by electronic mail, to the electronic mail address most recently provided to such party or such other electronic
mail address as may be designated in writing by such party. Any notice or other communication so transmitted shall be deemed to have been given on the day of delivery, if delivered personally, on the business day following receipt of written
confirmation, if sent by facsimile or electronic transmission, one (1) business day after delivery to an overnight courier service or five (5) days after mailing if sent by mail. 

10. Construction. THIS NOTE SHALL BE CONSTRUED AND ENFORCED IN ACCORDANCE WITH THE LAWS OF NEW YORK. 

11. Severability. Any provision contained in this Note which is prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction, be
ineffective to the extent of such prohibition or unenforceability without invalidating the remaining provisions hereof, and any such prohibition or unenforceability in any jurisdiction shall not invalidate or render unenforceable such provision in
any other jurisdiction. 
 12. Amendment; Waiver. Any amendment hereto or waiver of any provision hereof may be made with, and only with, the written
consent of Maker and Payee. 
 13. Assignment. No assignment or transfer of this Note or any rights or obligations hereunder may be made by any party
hereto (by operation of law or otherwise) without the prior written consent of the other party hereto and any attempted assignment without the required consent shall be void. 

[Signature page follows] 

  
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 IN WITNESS WHEREOF, Maker, intending to be legally bound hereby, has caused this Note
to be duly executed by the undersigned as of the day and year first above written. 
  

			
	RMG SPONSOR VI, LLC
		
	By:	 	 /s/ Philip Kassin

		 	Name: Philip Kassin
		 	Title: President and Chief Operating Officer


  

			
	Agreed and acknowledged:
	
	MKC INVESTMENTS LLC
		
	By:	 	 /s/ Philip Kassin

		 	Name: Philip Kassin
		 	Title: President, Chief Operating Officer
		 	and Secretary

 [Signature Page to Sponsor Promissory Note]