Document:

Exhibit 10.13

 

AMENDMENT
#1 TO CONTRACT

 

AGREEMENT, made and entered into this 26th
day of September, 2016, by and between NioCorp Developments Ltd., of 7000 South Yosemite Street, Suite115, Centennial, CO
80112 (hereinafter referred to as “NioCorp”) and Lind Asset Management IV, LLC, of 370 Lexington Ave, Suite
1900, New York, NY 10017 (hereinafter referred to as “Lind”).

 

W I T N E S S E T H

 

WHEREAS, NioCorp and Lind have previously entered into
that certain “Convertible Security Funding Agreement” dated December 14, 2015 (hereinafter referred to as the “Contract”);
and

 

WHEREAS, NioCorp and Lind wish to amend the terms and
conditions of the Contract as hereinafter provided;

 

NOW THEREFORE, in consideration of the mutual covenants
and promises herein contained and other good and valuable consideration, each to the other in hand paid, NioCorp and Lind agree
that from the date of this Amendment until January 1, 2017 the sum US$1,000,000 as it occurs in each of the following sections
of the Contract shall be, and hereby is, temporarily reduced to US$500,000:

 

		1.	Section 1.1 under the definition of “Market Cap / Cash Balance Conversion Event” subpart (a).

		2.	Section 1.1 under the definition of “Second Closing Notification Date” subpart (b).

		3.	The first occurrence, and only the first occurrence, of the sum US$1,000,000 in Section 2.1(d)(ii).

 

As of January 1, 2017, all of the foregoing amounts shall automatically
revert from US$500,000 to US$1,000,000 without further action by the Parties.

 

The duration of the aforesaid temporary reduction may be extended
only by the mutual written agreement of the Parties.

 

Except as specifically set forth hereinabove, the Contract remains
in full force and effect.

 

In witness whereof the parties have set their mutual hands and
seals the day and date first above written.

 

 

	NioCorp Developments Ltd.:	 	Lind Asset Management IV, LLC:
	 	 	 
	By:	  /s/ John F. Ashburn Jr.	 	By: 	/s/ Jeff Easton
	 	 	 	 	 
	 	Vice President & General Counsel	 	 	 
	 	Title	 	 	TitleExhibit 10.14

 

AMENDMENT
#2 TO CONTRACT

 

AGREEMENT, made and entered into this 29th
day of December, 2016, by and between NioCorp Developments Ltd., of 7000 South Yosemite Street, Suite115, Centennial, CO
80112 (hereinafter referred to as “NioCorp”) and Lind Asset Management IV, LLC, of 370 Lexington Ave, Suite
1900, New York, NY 10017 (hereinafter referred to as “Lind”).

 

W I T N E S S E T H

 

WHEREAS, NioCorp and Lind have previously entered into
that certain “Convertible Security Funding Agreement” dated December 14, 2015, as amended by Amendment #1 To Contract
dated September 26, 2016 (hereinafter referred to as the “Contract”); and

 

WHEREAS, NioCorp and Lind wish to amend the terms and
conditions of the Contract as hereinafter provided;

 

NOW THEREFORE, in consideration of the mutual covenants
and promises herein contained and other good and valuable consideration, each to the other in hand paid, NioCorp and Lind agree
that from the date of this Amendment until February 28, 2017 the sum US$1,000,000 as it occurs in each of the following sections
of the Contract shall be, and hereby is, temporarily reduced to US$500,000:

 

		1.	Section 1.1 under the definition of “Market Cap / Cash Balance Conversion Event” subpart (a).

		2.	Section 1.1 under the definition of “Second Closing Notification Date” subpart (b).

 

As of February 28, 2017, all of the foregoing amounts shall
automatically revert from US$500,000 to US$1,000,000 without further action by the Parties.

 

The duration of the aforesaid temporary reduction may be extended
only by the mutual written agreement of the Parties.

 

Except as specifically set forth hereinabove, the Contract remains
in full force and effect.

 

In witness whereof the parties have set their mutual hands and
seals the day and date first above written.

 

	NioCorp Developments Ltd.:	 	Lind Asset Management IV, LLC:
	 	 	 
	By:	  /s/ John F. Ashburn Jr.	 	By:	  /s/ Jeff Easton
	 	 	 	 	 
	 	Vice President & General Counsel	 	 	 
	 	Title 	 	 	TitleExhibit 10.16

 

AMENDMENT
#4 TO CONTRACT

 

AGREEMENT,
made and entered into this 21st day of April, 2017, by and between NioCorp Developments Ltd., of 7000 South
Yosemite Street, Suite115, Centennial, CO 80112 (hereinafter referred to as “NioCorp”) and Lind Asset Management
IV, LLC, of 370 Lexington Ave, Suite 1900, New York, NY 10017 (hereinafter referred to as “Lind”).

 

W
I T N E S S E T H

 

WHEREAS,
NioCorp and Lind have previously entered into that certain “Convertible Security Funding Agreement” dated December
14, 2015, as amended by Amendment #1 To Contract dated September 26, 2016, Amendment #2 To Contract dated December 29, 2016 and
Amendment #3 To Contract dated March 20, 2017 (hereinafter referred to as the “Contract”); and

 

WHEREAS,
NioCorp and Lind wish to further amend the terms and conditions of the Contract as hereinafter provided;

 

NOW
THEREFORE, in consideration of the mutual covenants and promises herein contained and other good and valuable consideration,
each to the other in hand paid, NioCorp and Lind agree that from the date of this Amendment until the earlier of:

 

		1.	July
                                         31, 2017, or

		2.	The
                                         date upon which a Subsequent First Convertible Security closing at the Request of the
                                         Investor of US$500,000 or more occurs, pursuant to Section 2.1(c) of the Contract (hereinafter
                                         the “US$500,000 SFCSRI”);

 

the
sum US$1,000,000 as it occurs in each of the following sections of the Contract shall be, and hereby is, temporarily reduced to
US$500,000:

 

		1.	Section
                                         1.1 under the definition of “Market Cap / Cash Balance Conversion Event”
                                         subpart (a).

		2.	Section
                                         1.1 under the definition of “Second Closing Notification Date”
                                         subpart (b).

 

As
of the earlier of July 31, 2017 or the closing of the UD$500,000 SFCSRI, all of the foregoing amounts shall automatically revert
from US$500,000 to US$1,000,000 without further action by the Parties.

 

The
duration of the aforesaid temporary reduction may be extended only by the mutual written agreement of the Parties.

 

Except
as specifically set forth hereinabove, the Contract remains in full force and effect.

 

In
witness whereof the parties have set their mutual hands and seals the day and date first above written.

 

	NioCorp Developments Ltd.:	 	Lind Asset Management IV, LLC:
	 	 	 	 	 
	By:	/s/ John
    F. Ashburn Jr.	 	By:	/s/ Jeff
    Easton
	 	 	 	 	 
	 	Vice
    President & General Counsel	 	 	Managing
    Director
	 	Title	 	 	TitleExhibit
10.17

 

AMENDMENT
#5 TO CONTRACT

AMENDING,
RESTATING AND REPLACING AMENDMENT #4

 

AGREEMENT,
made and entered into this 1st day of June, 2017, by and between NioCorp Developments Ltd., of 7000 South Yosemite
Street, Suite115, Centennial, CO 80112 (hereinafter referred to as “NioCorp”) and Lind Asset Management IV, LLC,
of 370 Lexington Ave, Suite 1900, New York, NY 10017 (hereinafter referred to as “Lind”).

 

W
I T N E S S E T H

 

WHEREAS,
NioCorp and Lind have previously entered into that certain “Convertible Security Funding Agreement” dated December
14, 2015, as amended by Amendment #1 To Contract dated September 26, 2016, Amendment #2 To Contract dated December 29, 2016, Amendment
#3 To Contract dated March 20, 2017 and Amendment #4 To Contract dated April 21, 2017 (hereinafter referred to as the “Contract”);
and

 

WHEREAS,
NioCorp and Lind wish to further amend the terms and conditions of the Contract and to amend, restate and replace Amendment #4
To Contract dated April 21, 2017 as hereinafter provided;

 

NOW
THEREFORE, in consideration of the mutual covenants and promises herein contained and other good and valuable consideration,
each to the other in hand paid, NioCorp and Lind agree that this Amendment #5 revises, restates and replaces Amendment #4 effective
as of the date hereof.

 

NioCorp
and Lind further agree that from the date of this Amendment #5 until July 31, 2017, the sum US$1,000,000 as it occurs in each
of the following sections of the Contract shall be, and hereby is, temporarily reduced to US$0.00 (zero dollars):

 

		1.	Section
                                         1.1 under the definition of “Market Cap / Cash Balance Conversion Event”
                                         subpart (a).

		2.	Section
                                         1.1 under the definition of “Second Closing Notification Date”
                                         subpart (b).

 

As
of July 31, 2017, all of the foregoing amounts shall automatically revert from US$0.00 to US$1,000,000 without further action
by the Parties.

 

The
duration of the aforesaid temporary reduction may be extended only by the mutual written agreement of the Parties.

 

Except
as specifically set forth hereinabove, the Contract remains in full force and effect.

 

In
witness whereof the parties have set their mutual hands and seals the day and date first above written.

 

	NioCorp Developments Ltd.:	 	Lind Asset Management IV, LLC:
	 	 	 	 	 
	By:	/s/ John
    F. Ashburn Jr.	 	By:	/s/ Jeff
    Easton
	 	 	 	 	 
	 	Vice
    President & General Counsel	 	 	Managing
    Director
	 	Title	 	 	TitleExhibit
10.18

 

AMENDMENT
#6 TO

CONTRACT

 

AGREEMENT,
made and entered into this 4th day of August, 2017, by and between NioCorp Developments Ltd., of 7000 South
Yosemite Street, Suite115, Centennial, CO 80112 (hereinafter referred to as “NioCorp”) and Lind Asset Management
IV, LLC, of 370 Lexington Ave, Suite 1900, New York, NY 10017 (hereinafter referred to as “Lind”).

 

W
I T N E S S E T H

 

WHEREAS,
NioCorp and Lind have previously entered into that certain “Convertible Security Funding Agreement” dated December
14, 2015, as amended by Amendment #1 To Contract dated September 26, 2016, Amendment #2 To Contract dated December 29, 2016, Amendment
#3 To Contract dated March 20, 2017, Amendment #4 To Contract dated April 21, 2017, and Amendment #5 To Contract dated June 1,
2017 (hereinafter referred to as the “Contract”); and

 

WHEREAS,
NioCorp and Lind wish to further amend the terms and conditions of the Contract as hereinafter provided;

 

NOW
THEREFORE, in consideration of the mutual covenants and promises herein contained and other good and valuable consideration,
each to the other in hand paid, NioCorp and Lind agree that from the date of this Amendment #6 until November 1, 2017, the sum
US$1,000,000 as it occurs in each of the following sections of the Contract shall be, and hereby is, temporarily reduced to US$250,000.00
(Two Hundred Fifty Thousand Dollars):

 

		1.	Section
                                         1.1 under the definition of “Market Cap / Cash Balance Conversion Event”
                                         subpart (a).

		2.	Section
                                         1.1 under the definition of “Second Closing Notification Date”
                                         subpart (b).

 

As
of November 1, 2017, all of the foregoing amounts shall automatically revert from US$250,000.00 to US$1,000,000 without further
action by the Parties.

 

The
duration of the aforesaid temporary reduction may be extended only by the mutual written agreement of the Parties.

 

NioCorp
and Lind further agree that Section 2.1(c) of the Contract is hereby deleted and replaced in its entirety with the following:

 

		(c)	at
                                         any time during the Term of the First Convertible Security, so long as any part of the
                                         Face Value of the First Convertible Security remains outstanding, the Investor may (at
                                         its absolute discretion) issue the Company with a written notice that it intends to increase
                                         the amount of the funding advanced under the First Convertible Security (First
                                         Convertible Security Increase Notice from the Investor) and thereafter, the Investor
                                         will advance to the Company (but subject to there being no occurrence or existence of
                                         an Event of Default andclause 14(c)) in immediately available funds, a further US$1,000,000
                                         (subject to any additional set off in this Agreement) with an implied interest rate of
                                         10% per annum (being a Total Interest Amount of US$200,000 regardless of whether the
                                         Conversion and/or repayment of the entire Amount Outstanding for the First Convertible
                                         Security occurs before the expiry of the Term, subject to clause 5.4(d)), as additional
                                         consideration for the First Convertible Security, the Face Value of the First Convertible
                                         Security of which will increase by US$1,200,000 (said amount representing a further funding
                                         amount of US$1,000,000 plus an implied interest amount of US$200,000 and herein referred
                                         to as the Subsequent First Convertible Security at the Request of the Investor).
                                         Anything herein contained to the contrary notwithstanding (but subject to there being
                                         no occurrence or existence of an Event of Default and clause 14(c)), the Subsequent First
                                         Convertible Security at the Request of the Investor may, at the absolute discretion of
                                         Lind, be funded in more than one tranche (the date(s) on which such funds are received
                                         from the Investor by the Company each constituting a Subsequent First Convertible
                                         Security Closing at the Request of the Investor);

 

     

     

    

 

Except
as specifically set forth hereinabove, the Contract remains in full force and effect.

 

In
witness whereof the parties have set their mutual hands and seals the day and date first above written.

 

	NioCorp
    Developments Ltd.:	 	Lind
    Asset Management IV, LLC:
	 	 	 	 	 
	By:	/s/
    John F. Ashburn Jr.	 	By:	/s/
    Jeff Easton
	 	 	 	 	 
	 	VP
    & General Counsel	 	 	Managing
    Partner
	 	Title	 	 	Title

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