EXHIBIT 99.6

CONVERTIBLE DEBENTURE

THIS DEBENTURE IS SUBJECT TO A CONVERTIBLE DEBENTURE SUBSCRIPTION AGREEMENT OF EVEN DATE HEREWITH (THE “SUBSCRIPTION AGREEMENT”)

AS DESCRIBED IN THE SUBSCRIPTION AGREEMENT, THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (“ACT”), OR ANY APPLICABLE STATE SECURITIES LAWS (“BLUE SKY LAWS”). ANY TRANSFER OF SUCH SECURITIES WILL BE INVALID UNLESS A REGISTRATION STATEMENT UNDER THE ACT AND AS REQUIRED BY BLUE SKY LAWS IS IN EFFECT AS TO SUCH TRANSFER OR IN THE OPINION OF COUNSEL SATISFACTORY TO THE BORROWER SUCH REGISTRATION IS UNNECESSARY IN ORDER FOR SUCH TRANSFER TO COMPLY WITH THE ACT AND BLUE SKY LAWS.

$[___________]                                   __________________, 2018

For Value Received, CLS Holdings USA, Inc, a Nevada corporation (“Maker”), under the terms of this Convertible Debenture (“Debenture”) promises to pay to the order of ____________________________________ (“Purchaser”), by check, in lawful money of the United States of America and in immediately available funds, the principal amount of $____________________ (the “Original Principal Amount”), together with such interest on the Original Principal Amount as provided for below on that date which is thirty-six months from the date set forth above (the “Maturity Date”) if not sooner indefeasibly paid in full.

Interest payable on the Original Principal Amount (including all PIK Amounts (as defined below) added thereto, the “Principal Amount”) shall accrue at a rate per annum equal to eight percent (8%) (the “Contract Rate”). Interest shall be (i) calculated on the basis of a 360 day year, and (ii) payable monthly, in arrears, commencing on December 31, 2018, on the last business day of each consecutive calendar quarter thereafter through and including the Maturity Date, and on the Maturity Date, whether by acceleration or otherwise (each, an Interest Payment Date”).  On any Interest Payment Date on or prior to June 30, 2020, interest on the Principal Amount of this Debenture at the Contract Rate that shall have accrued and shall remain unpaid as of such Interest Payment Date (for any Interest Payment Date, a “PIK Amount”) may, at the option of the Maker, be paid on such Interest Payment Date by addition of such PIK Amount to the then outstanding Principal Amount.  At the option of the Maker, the PIK Amounts added to the then-outstanding Principal Amount during such quarter may be evidenced by a note (a “PIK Note”) in form and substance determined by the Maker; provided, however, that such PIK Note shall not be necessary to evidence such portion of the Principal Amount nor shall the absence of such PIK Note relieve the Maker of its obligation to pay such portion of the Principal Amount to the Payee. Notwithstanding any other provision of this Debenture and the addition of any PIK Amount to the principal amount outstanding under this Debenture, the Maker may, in its sole discretion, pay any PIK Amount in cash on any Interest Payment Date without any premium or penalty.  All cash payments by the Companies of any PIK Amount that has been added to the principal amount of this Debenture shall be deducted from the Principal Amount.

Capitalized terms used herein but not otherwise defined shall have the meanings given to them in the Subscription Agreement.

1.     Conversion.  At Purchaser’s option, at any time prior to the close of business on the earlier of (i) the last business day immediately prior to the Maturity Date; or (ii) the Redemption Date (as defined in the section 3 below), the Purchaser may choose to have all or part of the outstanding principal and accrued interest owing to Purchaser repaid in Units at a conversion rate equal to eighty cents ($0.80) per Unit, as adjusted pursuant to Section 2 (the “Conversion Price”).  In the event Purchaser chooses to convert all or part of the outstanding principal and accrued interest into Units, Purchaser shall give written notice to Company of such conversion no less than fifteen (15) business days prior to such conversion, and shall surrender the original of this Debenture to the Company, after which Purchaser will have no further rights under this Debenture as to the converted principal and interest, except the right to receive certificates representing the components of the Units. Notwithstanding anything to the contrary in either the Subscription Agreement or this Debenture, if at any time after six (6) months and one (1) day after the date of issuance of the Debenture (the “Closing Date”) the price of a Share on the exchange or trading platform on which the Shares are traded exceeds $1.20 (U.S.) for ten consecutive trading days, the Company, on not less than thirty (30) days-notice (the end of such notice period, the “Forced Conversion Date”) to the Purchaser, may require conversion of this Debenture, in which case, following the Forced Conversion Date, interest shall cease to accrue on this Debenture and the Purchaser will have no further rights under this Debenture as to the converted principal and interest, except the right to receive certificates representing the components of the Units.

2.     Adjustment of Conversion Price.  The Conversion Price shall be subject to adjustment from time to time as follows:

(a)  If at any time after the date of this Debenture, the Company shall subdivide its outstanding Shares, the Conversion Price in effect immediately prior to such issuance or subdivision shall be proportionately reduced.  If the outstanding Shares shall be combined into a smaller number of shares, the Conversion Price in effect immediately prior to such combination shall be proportionately increased. The Conversion Price also shall be appropriately adjusted in the event of the subsequent issuance of Shares or securities convertible into Shares, by way of security dividend or distribution, the issuance of rights, options or warrants to all or substantially all the holders of Shares or the distribution of shares of any other class of shares, rights, options, warrants, evidences of indebtedness or assets.

(b)  No adjustment in the Conversion Price and/or the number of shares of Common Stock subject to the Debenture need be made if such adjustment would result in a change in the Conversion Price of less than one cent ($0.01) or a change in the number of subject shares of less than one-tenth (1/10th) of a share.

(c)  Upon any adjustment of the Conversion Price hereunder, the Company will compute the adjustment and prepare and furnish to Purchaser a certificate setting forth such adjustment and showing in detail the facts upon which the adjustment is based.

3.     Redemption/Change in Control.

(a) The Purchaser may, upon not less than thirty (30) days-notice (the end of such notice period, the “Redemption Date”) to the Company following a “Change in Control” (as defined below), require the Company to repurchase the Debenture, in whole or in part, at a price (the “Redemption Price”) equal to 105% of the principal amount of the Debenture outstanding (including any accrued and unpaid interest) on the Redemption Date.

(b) If holders of ninety percent (90%) or more of the series of debentures of which this Debenture is a part have demanded to require the Company to repurchase their debentures following a Change in Control, the Purchaser agrees to allow the Company to repurchase this Debenture for the Redemption Price on the Redemption Date notwithstanding the fact that the Purchaser has not provided the notice described in section 3(a).

(c) Following the Redemption Date, interest shall cease to accrue on this Debenture and the Purchaser will have no further rights under this Debenture as to the converted principal and interest, except the right to receive the Redemption Price.

(d) A “Change in Control,” for purposes of this Debenture, means (i) any event as a result of or following which any person, or group of persons acting jointly or in concert within the meaning of applicable United States securities laws, beneficially owns or exercises control or direction over an aggregate of more than 50% of the then outstanding Shares; or (ii) the sale or other transfer of all or substantially all of the consolidated assets of the Company. A “Change in Control” does not include a sale, merger, reorganization or other similar transaction if the previous holders of the Shares hold at least 50% of the voting shares of such merged, reorganized or other continuing entity.

4.     Authorized Shares.  Until the Maturity Date, the Company shall maintain sufficient numbers of authorized and unissued Shares to permit the full exercise of the conversion of this Debenture and the exercise of any Warrant.

5.     Default.

5.1   Events of Default.  With respect to the Debenture, the following events are “Events of Default”:

(a)  Default by Company in the payment of principal on or any interest payable under the Debenture after fifteen (15) business days’ written notice from Purchaser following the date when the same is due and payable; or

(b)  Default in the due performance or observance of any other material covenant, agreement or provision in the Subscription Agreement, or in this Debenture, to be performed or observed by Company, and such default shall have continued for a period of thirty (30) business days after written notice thereof to Company from Purchaser; or

(c)  the occurrence of any of the following:

5.2   Acceleration.  If any one or more Events of Default described in Section 5.1 shall occur and be continuing, then Purchaser may, at Purchaser’s option and by written notice to Company, declare the unpaid balance of the Debenture owing to Purchaser to be forthwith due and payable.

6.     This Debenture is an unsecured obligation of the Company and will rank pari passu in right of payment of principal and interest with all other unsecured obligations of the Company.

7.     Governing Law. This Debenture shall be governed by, and construed and enforced in accordance with, the laws of the state of Nevada, excluding conflict of laws principles that would cause the application of laws of any other jurisdiction.

8.     Successors. The provisions of this Debenture shall inure to the benefit of and be binding on any successor of Purchaser. This Debenture cannot be assigned by any party hereto except as described in the Subscription Agreement.