Exhibit 4.13


 





 


EXECUTION


 


 


SUPPLEMENTAL
AGREEMENT


 


 


Relating
to a ZAR5,500,000,000 Revolving Facility Agreement


 


by


 


SIBANYE GOLD LIMITED


 


and


 


SIBANYE RUSTENBURG PLATINUM MINES PROPRIETARY
LIMITED


 


and


 


KROONDAL OPERATIONS PROPRIETARY LIMITED


 


and


 


WESTERN PLATINUM LIMITED


 


and


 


STILLWATER MINING COMPANY


 


and


 


NEDBANK LIMITED (ACTING THROUGH ITS NEDBANK
CORPORATE AND INVESTMENT BANKING DIVISION)


 


(as Agent acting on behalf of the Finance Parties)


 






     


     


    

 


CONTENTS


 


	1.	DEFINITIONS AND INTERPRETATION	2
	2.	AMENDMENT	2
	3.	REPRESENTATIONS	2
	4.	CONFIRMATION OF GUARANTEES	3
	5.	MISCELLANEOUS	3
	6.	COUNTERPARTS	3
	7.	GOVERNING LAW	4



 






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SUPPLEMENTAL AGREEMENT RELATING TO A ZAR 5,500,000,000
REVOLVING FACILITY AGREEMENT


 


This Agreement
is dated     25     November 2019


 


PARTIES:


 


This Agreement is made between:


 


		(1)	SIBANYE GOLD LIMITED, a public company incorporated under the laws of South Africa with registration
number 2002/031431/06 (Sibanye Gold);



 


		(2)	SIBANYE RUSTENBURG PLATINUM MINES PROPRIETARY LIMITED, a private company incorporated under the
laws of South Africa with registration number 2015/305479/07;



 


		(3)	KROONDAL OPERATIONS PROPRIETARY LIMITED, a private company incorporated under the laws of South
Africa with registration number 2000/000341/07;



 


		(4)	WESTERN PLATINUM LIMITED, a private company incorporated under the laws of South Africa with registration
number 1963/003589/06;



 


		(5)	STILLWATER MINING COMPANY, a company incorporated in the State of Delaware, United States of America,
with registration number 2317621; and



 


		(6)	NEDBANK LIMITED (ACTING THROUGH ITS NEDBANK CORPORATE AND INVESTMENT BANKING DIVISION), a registered
bank and public company incorporated under the laws of South Africa with registration number 1951/000009/06, as Agent acting on behalf
of the Finance Parties (the Agent).



 


WHEREAS


 


		(A)	This Agreement is supplemental to and amends the ZAR 5,500,000,000 revolving facility agreement originally
dated 25 October 2019 between, amongst others, the Parties (the Facility Agreement).



 


		(B)	The Parties have agreed to amend the Facility Agreement on the terms and conditions of this Agreement.



 


		(C)	All Lenders (as defined in the Facility Agreement) have consented to the amendments to the Facility Agreement
contemplated by this Agreement. Accordingly, the Agent is authorised to execute this Agreement on behalf of the Finance Parties.



 






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IT IS AGREED AS FOLLOWS:


 


		1.	DEFINITIONS AND INTERPRETATION



 


		1.1	Definitions



 


Words and expressions defined in the
Facility Agreement, as amended by this Agreement, shall have the same meanings in this Agreement unless they are otherwise defined herein.
In addition, in this Agreement:


 


		1.1.1	Amended Facility Agreement means the Facility Agreement
as amended by this Agreement.



 


		1.1.2	Facility Agreement has the meaning given to it in Recital
A above.



 


		1.1.3	Party means a party to this Agreement.



 


		1.2	Construction



 


	1.2.1	The provisions of clauses 1.2 (Construction), 1.3 (Currency symbols and definitions), 1.4 (Third party rights)
and 46 (Enforcement) of the Facility Agreement, as amended by this Agreement, shall apply to this Agreement as they apply to
the Facility Agreement.



 


		2.	AMENDMENT



 


The Facility Agreement will be amended
from the date of this Agreement by amending clause 11.1.2 (Interest Periods) to read as follows: "Subject to this Clause 11,
a Borrower (or the Company) may select an Interest Period of one, three or six Months or any other period agreed between the Company,
the Agent and all the Lenders."


 


		3.	REPRESENTATIONS



 


		3.1	Representations



 


The representations and warranties set
out in this clause 3 are made by each Obligor to the Agent (on behalf of the Finance Parties). References in this clause to it or its
include, unless the context otherwise requires, each Obligor.


 


		3.2	Binding obligations



 


The obligations expressed to be assumed
by it in this Agreement are, subject to the Legal Reservations, legal, valid, binding and enforceable obligations.


 


		3.3	Non-conflict with other obligations



 


The entry into and performance by it
of, and the transactions contemplated by, this Agreement do not and will not conflict with:


 


		3.3.1	any law or regulation applicable to it;



 


		3.3.2	its constitutional documents; or



 


		3.3.3	any material agreement or instrument which is binding on it
or any of its assets.



 






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		3.4	Power and authority



 


It has the power to enter into, perform
and deliver, and has taken all necessary action to authorise its entry into, performance and delivery of, this Agreement and the transactions
contemplated by this Agreement.


 


		3.5	Validity and admissibility in evidence



All Authorisations required:



 


		3.5.1	to enable it lawfully to enter into, exercise its rights and
comply with its obligations in this Agreement; and



 


		3.5.2	for the validity or enforceability of this Agreement or to make
this Agreement admissible in evidence in its jurisdiction of incorporation, have been obtained or effected and are in full force and
effect.





 


		3.6	Facility Agreement



 


Each Obligor confirms to the Agent that,
on the date of this Agreement, the Repeating Representations:


 


		3.6.1	are true; and



 


		3.6.2	would also be true if references to the Facility Agreement are construed as references to the Amended
Facility Agreement.



 


In each case, each Repeating Representation is applied to
the facts and circumstances then existing.


 


		4.	CONFIRMATION OF GUARANTEES



 


Each Guarantor confirms that its guarantee,
indemnity and undertaking continues in full force and effect on the terms of the guarantee, indemnity and undertaking contained in Clause
19 (Guarantee and Indemnity) of the Facility Agreement.


 


		5.	MISCELLANEOUS



 


		5.1	Each of this Agreement and the Amended Facility Agreement is
a Finance Document.



 


		5.2	Subject to the terms of this Agreement, the Facility Agreement will remain in full force and effect and,
from the date of this Agreement, the Facility Agreement and this Agreement will be read and construed as one document.



 


		6.	COUNTERPARTS



 


This Agreement may be executed in
any number of counterparts and by different Parties hereto in separate counterparts, each of which when so executed shall be deemed to
be an original and this has the same effect as if the signatures on the counterparts were on a single copy of this Agreement.


 


		7.	GOVERNING LAW



 


This Agreement and any non-contractual obligations arising
out of or in connection with it are governed by South African law.


 


This Agreement has been entered into on the date stated at the beginning
of this Agreement.


 


-Signature Pages to follow-


 






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OBLIGORS


 


	SIGNED at Roodeport on this the 25th
    day of November 2019




 


	 	For
    and on behalf of
	 	SIBANYE
    GOLD LIMITED
	 	 
	 	/s/ Charl Keyter 
	 	Signatory: Charl Keyter
	 	Capacity: Director
	 	Who
    warrants his authority hereto




 


	SIGNED at Roodeport on this the 25th
    day of November 2019




 


	 	For
    and on behalf of
	 	STILLWATER MINING COMPANY
	 	 
	 	/s/ Charl Keyter 
	 	Signatory: Charl Keyter
	 	Capacity: Director
	 	Who
    warrants his authority hereto




 


	SIGNED at Roodeport on this the 25th
    day of November 2019




 


	 	For
    and on behalf of
	 	KROONDAL OPERATIONS PROPRIETARY LIMITED
	 	 
	 	/s/ Charl Keyter 
	 	Signatory: Charl Keyter
	 	Capacity: Director
	 	Who
    warrants his authority hereto




 






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	SIGNED at Roodeport on this the 25th
    day of November 2019




 


	 	For
    and on behalf of
	 	

SIBANYE RUSTENBURG PLATINUM
MINES PROPRIETARY LIMITED



	 	 
	 	/s/ Charl Keyter 
	 	Signatory: Charl Keyter
	 	Capacity: Director
	 	Who
    warrants his authority hereto




 


	SIGNED at Roodeport on this the 25th
    day of November 2019




 


	 	For
    and on behalf of
	 	WESTERN PLATINUM LIMITED
	 	 
	 	/s/ Charl Keyter 
	 	Signatory: Charl Keyter
	 	Capacity: Director
	 	Who
    warrants his authority hereto




 






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Agent


 





SIGNED at   Sandton      
on this the       25th         day of November
 2019.


 





	 	For
    and on behalf of
	 	 NED BANK LIMITED (acting through its Nedbank Corporate and investment
    Banking Division)
	 	 
	 	/s/ GL WEBBER
	 	Signatory:
    GL WEBBER
	 	Capacity:
    AUTHORIZED SIGNATORY
	 	Who
    warrants his authority hereto
	 	 
	 	/s/ F.P. Jansen Van Rensburg
	 	Name: F.P. Jansen Van Rensburg
	 	NED BANK LIMITED
	 	Capacity:
    AUTHORIZED SIGNATORY
	 	Who
    warrants his authority hereto


 



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