MARA Marathon Digital Holdings Inc

On September 7, 2017, Marathon Patent Group, Inc., (the “ Company ”) entered into a Lock-up Agreement with the Company’s Chief Executive Officer (the “ Lock-up Agreement ”). The Lock-Up Agreement also amends the Amended and Restated Retention Agreement, dated August 30, 2017 (the “ Amended and Restated Agreement ”, and together with the Lock-up Agreement, the “ Agreements ”). Under the Agreements, 3,000,000 restricted shares of common stock issuable to the Chief Executive Officer and Chief Financial Officer of the Company (the “ Retention Shares ”) in connection with their agreements also become subject to a lock-up provision under which the Company and the executives have agreed that (1) the date of issuance of the Retention Shares shall be the earlier of the date of shareholder approval of the 2017 Equity Incentive Plan or December 31, 2017, and (2) the holder of such Retention Shares may not, directly or indirectly (i) offer, sell, offer to sell, contract to sell, hedge, pledge, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase or sell (or announce any offer, sale, offer of sale, contract of sale, hedge, pledge, sale of any option or contract to purchase, purchase of any option or contract of sale, grant of any option, right or warrant to purchase or other sale or disposition), or otherwise transfer or dispose of (or enter into any transaction or device that is designed to, or could be expected to, result in the disposition by any person at any time in the future), any Retention Shares, beneficially owned, within the meaning of Rule 13d-3 under the Securities Exchange Act of 1934, as amended, by the undersigned on the date of the Lock-up Agreement or thereafter acquired or (ii) enter into any swap or other agreement or any transaction that transfers, in whole or in part, directly or indirectly, the economic consequence of ownership of any Retention Shares, whether or not any such swap or transaction described in clause (i) or (ii) above is to be settled by delivery of any securities; provided, however, on the 30th day following the date of a Qualifying Transaction (as defined in the Agreements) and on each succeeding monthly (30 day) period following the date of issuance, 16.67% of such Retention Shares shall no longer be subject to such restrictions. Other than the foregoing, the material terms of the Amended and Restated Agreement remain in full force and effect.

The foregoing description of the terms of the Lock-up Agreement is qualified in its entirety by reference to the full text of the form of the Lock-up Agreement filed as Exhibit 10.1 to this Current Report on Form 8-K.