| RIOT BLOCKCHAIN, INC.                              |
|----------------------------------------------------|
| (Exact name of registrant as specified in charter) |
| Nevada                                                         | 84-1553387                        |
|----------------------------------------------------------------|-----------------------------------|
| (State or other jurisdiction of incorporation or organization) | (IRS Employer Identification No.) |
| 202 6th Street, Suite 401Castle Rock, CO | 80104      |
|-----------------------------------------------|------------|
| (Address of principal executive offices)      | (Zip Code) |
| Common Stock no par value per share |   | The NASDAQ Stock Market LLC                                               |
|-------------------------------------|--------|---------------------------------------------------------------------------|
| (Title of class)          |   | (Name of each exchange on which registered) |

----

| Large accelerated filer ☐                                                    |   |   | Accelerated filer ☐         |
|-----------------------------------------------------------------------------------------|--------|--------|----------------------------------------|
|                                                                                    |   |   |                                   |
| Non-accelerated filer ☐                                                      |   |   | Smaller reporting company ☒ |
| (Do not check if a smaller reporting company) Emerging growth company ☐ |   |   |                                   |

----

| PART III |                                                                                            |
|----------|-------------------------------------------------------------------------------------------------|
|     |                                                                                            |   |
| Item 10. | Directors, Executive Officers and Corporate Governance.                                         | 4 |
| Item 11. | Executive Compensation.                                                                         | 8 |
| Item 12. | Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters. | 11 |
| Item 13. | Certain Relationships and Related Transactions, and Director Independence.                      | 12 |
| Item 14. | Principal Accountant Fees and Services.                                                         | 13 |
|     |                                                                                            |   |
| PART IV  |                                                                                            |
|     |                                                                                            |   |
| Item 15. | Exhibits, Financial Statement Schedules.                                                        | 13 |

----

| ● | The uncertainty of profitability; |
|---------|-----------------------------------|

| ● | High volatility in the value attributable to our business model and assets; |
|---------|-----------------------------------------------------------------------------|

| ● | Rapid change in the regulatory and legal environment in which we operate with many unknown future challenges to operating our business in a lawful manner or which will require our business or the businesses in which we invest to be subjected to added costs and/or uncertainty regarding the ability to operate; |
|---------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ● | Risks related to failure to obtain adequate financing on a timely basis and on acceptable terms; and |
|---------|------------------------------------------------------------------------------------------------------|

| ● | Other risks and uncertainties related to our business plan and business strategy. |
|---------|-----------------------------------------------------------------------------------|

----

| Name                 |   | Age    |   | Position                                                  |
|----------------------|--------|--------|--------|-----------------------------------------------------------|
|                 |   |   |   |                                                      |
| John R. O'Rourke     |   | 32     |   | Chief Executive Officer, President, Director and Chairman |
| Remo Mancini         |   | 66     |   | Lead Director                                             |
| Andrew J. Kaplan     |   | 50     |   | Director                                                  |
| Jason Les            |   | 32     |   | Director                                                  |
| Robby Chang          |   | 40     |   | Chief Financial Officer                                   |
| Christopher Ensey    |   | 37     |   | Chief Operating Officer                                   |
| Jeffrey G. McGonegal |   | 67     |   | Principal Accounting Officer and Secretary                |

----

----

|   | ● | appointing; approving the compensation of; overseeing the work of; and assessing the independence, qualifications, and performance of the independent auditor;            |
|--------|---------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   | ● | reviewing the internal audit function, including its independence, plans, and budget;                                                                                     |
|   | ● | approving, in advance, audit and any permissible non-audit services performed by our independent auditor;                                                                 |
|   | ● | reviewing our internal controls with the independent auditor and management;                                                                                              |
|   | ● | reviewing the adequacy of our accounting and financial controls as reported by the independent auditor and management;                                                    |
|   | ● | overseeing our financial compliance system; and                                                                                                                           |
|   | ● | overseeing our major risk exposures regarding our accounting and financial reporting policies, the activities of our internal audit function, and information technology. |

----

|   | ● | reviewing and making recommendations to the Board with respect to the compensation of our officers and directors, including the CEO;               |
|--------|---------|----------------------------------------------------------------------------------------------------------------------------------------------------|
|   | ● | overseeing and administering the Company's executive compensation plans, including equity-based awards;                                            |
|   | ● | negotiating and overseeing employment agreements with officers and directors; and                                                                  |
|   | ● | overseeing how the Company's compensation policies and practices may affect the Company's risk management practices and/or risk-taking incentives. |
|   | ● | reviewing and assessing the development of the executive officers, and considering and making recommendations to the Board regarding promotion and succession issues;                                                                 |
|--------|---------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   | ● | evaluating and reporting to the Board on the performance and effectiveness of the directors, committees, and the Board as a whole;                                                                                                    |
|   | ● | working with the Board to determine the appropriate and desirable mix of characteristics, skills, expertise, and experience, including diversity considerations, for the full Board and each committee;                               |
|   | ● | annually presenting to the Board a list of individuals recommended to be nominated for election to the Board;                                                                                                                         |
|   | ● | reviewing, evaluating, and recommending changes to the Company's Corporate Governance Principles and committee Charters;                                                                                                              |
|   | ● | recommending to the Board individuals to be elected to fill vacancies and newly created directorships;                                                                                                                                |
|   | ● | overseeing the Company's compliance program, including the Code of Conduct; and                                                                                                                                                       |
|   | ● | overseeing and evaluating how the Company's corporate governance and legal and regulatory compliance policies and practices, including leadership, structure, and succession planning, may affect the Company's major risk exposures. |

----

| Named Executive Officer and Principal Position                 |  Year |    | Salary($) |      | Stock Awards (5) ($) |    | Option Awards(6)($) |      | Non-Equity Incentive Plan Compensation(7)($) |   | All OtherCompensation($) |   | Total($) |
|----------------------------------------------------------------|------------|---------|-----------|-----------|----------------------|---------|---------------------|-----------|----------------------------------------------|--------|--------------------------|--------|----------|
|                                                           |       |    |      |      |                 |    |                |      |                                         |   |                     |   |     |   |
| John R. O'Rourke, Chief Executive Officer and President (1)    | 2017       | 60,000  |      | 2,322,000 | 609,842              | -       | -                   | 2,991,842 |
|                                                           |       |    |      |      |                 |    |                |      |
| Michael M. Beeghley, Chief Executive Officer (former) (2) | 2017       | 9,000   |      | 270,000   | 60,739               | -       | -                   | 339,739   |
|                                                           |       |    |      |      |                 |    |                |      |
| Stephen T. Lundy,                                              | 2017       | 111,881 |      | 62,600    | -                    | -       | 544,692             | 719,173   |
| Chief Executive Officer and President (former) (3)        | 2016       | 382,525 |      |      | 183,273              | 191,263 | 61,098              | 818,159   |
|                                                           |       |    |      |      |                 |    |                |      |
| Jeffrey G. McGonegal,                                          | 2017       | 272,005 |      | 127,800   | -                    | 140,000 | 169,843             | 709,648   |
| Chief Financial Officer (former) (4)                           | 2016       | 272,005 |      |      | 89,506               | 136,003 | 16,111              | 513,625   |

----

|                           | Option Awards                                                      |   | Stock Awards                                                         |   |
|--------------------------------|--------------------------------------------------------------------|--------|----------------------------------------------------------------------|--------|
| Named Executive Officer        | Number of Securities Underlying Unexercised Options Exercisable(#) |   | Number of Securities Underlying Unexercised Options Unexercisable(#) |   | Equity IncentivePlan Awards:Number of Securities Underlying Unexercised Unearned Options (#) |   | OptionExercisePrice($) |   | OptionExpirationDate |   | Number of Shares or Units of Stock That Have Not Vested (#) |   | Market Value of Shares or Units of Stock That Have Not Vested ($) |   | Number of Stock Options Held at Fiscal  Year-End (#) |   | Number of Shares of Restricted Stock Held at Fiscal  Year-End (#) |   |
|                           |                                                               |   |                                                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| John R. O'Rourke (1)           |                                                               |   | 100,000                                                              |   |   |   | - |   |   |   | - |   |   |   | 10.00 |   |   |   | 11-2-2027 |   |   |   | 440,709 |   |   |   | 12,516,136 |   |   |   | 100,000 |   |   |   | 464,417 |   |
|                           |                                                               |   |                                                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|                           |                                                               |   |                                                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|  Jeffrey G. McGonegal (2) |                                                               |   | -                                                                    |   |   |   | - |   |   |   | - |   |   |   | - |   |   |   | - |   |   |   | 22,858 |   |   |   | 649,167 |   |   |   | - |   |   |   | 25,000 |   |
|                           |                                                               |   |                                                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |

----

| Named Executive Officer |   | Benefit                  |   | Terminationwithout Cause($) |   | Death orDisability($) |   | Change In Control(Single Trigger)($)  (1) |   | Change In Control(Double Trigger)($) |
|-------------------------|--------|--------------------------|--------|-----------------------------|--------|-----------------------|--------|------------------------------------------------|--------|--------------------------------------|
|                    |   |                     |   |                        |   |                  |   |                                           |   |                                 |
| John R. O'Rourke        |   | Severance                |   | 550,000                     |   | -                     |   | -                                              |   | 550,000                              |
|                    |   | Restricted Common Shares |   | -                           |   | -                     |   | 12,516,136                                     |   | 12,516,136                           |
|                    |   | Options                  |   | -                           |   | -                     |   | -                                              |   | -                                    |
|                    |   | Total                    |   | 550,000                     |   | -                     |   | 12,516,136                                     |   | 13,066,136                           |
|                    |   |                     |   |                        |   |                  |   |                                           |   |                                 |
| Jeffrey G. McGonegal    |   | Severance                |   | 90,668                      |   | 90,668                |   | -                                              |   | 90,668                               |
|                    |   | Restricted Common Shares |   | -                           |   | -                     |   | 649,167                                        |   | 649,167                              |
|                    |   | Options                  |   | -                           |   | -                     |   | -                                              |   | -                                    |
|                    |   | Total                    |   | 90,668                      |   | 90,668                |   | 649,167                                        |   | 739,835                              |
| Name                               |   | CashFees($) |   |   | StockAwards($) (8) |   |    | OptionAwards($) |   |   | Total($) |   |
|------------------------------------|--------|-------------|--------|--------|--------------------|--------|---------|-----------------|--------|--------|----------|--------|
|                               |   |        |   |   |               |   |    |            |   |   |     |   |
| John R. O'Rourke (1)               |   |        | 12,000 |   |               |   | 552,343 |            |   |   | -        |   |   |   | 564,343 |   |
| Andrew J. Kaplan (2)               |   |        | 8,000  |   |               |   | 80,220  |            |   |   | -        |   |   |   | 88,220 |   |
| Jason Les (3)                      |   |        | 6,000  |   |               |   | 50,625  |            |   |   | -        |   |   |   | 56,625 |   |
| Michael M. Beeghley (former) (4)   |   |        | 20,000 |   |               |   | 584,495 |            |   |   | -        |   |   |   | 604,495 |   |
| Mike Dai (former) (5)         |   |        | 10,000 |   |               |   | 234,050 |            |   |   | -        |   |   |   | 244,050 |   |
| Eric So (former) (6)               |   |        | 2,000  |   |               |   | 63,675  |            |   |   | -        |   |   |   | 65,675 |   |
| Michael W. Routh (former) (7) |   |        | 1,000  |   |               |   | 62,600  |            |   |   | -        |   |   |   | 63,600 |   |

----

| Name and Address                                                |   | Number of Shares |    |   | Percent |   |
|-----------------------------------------------------------------|--------|------------------|---------|--------|---------|--------|
| Directors:                                                      |   |             |    |   |    |   |
| John R. O'Rourke (1)                                            |   |             | 257,221 |   |    |   | 1.9 | % |
| Jason Les (2)                                                   |   |             | 20,937  |   |    |   | * |   |
| Andrew J. Kaplan (3)                                            |   |             | 14,417  |   |    |   | * |   |
| Remo Mancini (4)                                                |   |             | 26,250  |   |    |   | * |   |
| Other Executive Officers:                                       |   |             |    |   |    |   |   |   |
| Robby Chang (5)                                                 |   |             | 7,500   |   |    |   | * |   |
| Christopher Ensey (6)                                           |   |             | 25,000  |   |    |   | * |   |
| Jeffrey G. McGonegal (7)                                        |   |             | 26,072  |   |    |   | * |   |
| All Directors and Executive Officers as a Group (7 persons) (8) |   |             | 377,397 |   |    |   | 2.7 | % |
| (1) | Includes (i) 8,752 shares of common stock vested or to be vested pursuant to a restricted stock award of an aggregate of 35,000 shares pursuant to the 2002 Stock Incentive Plan (the "2002 Plan") which vest in 24 equal monthly installments over a two year period, beginning on the one month anniversary of February 3, 2017, (ii) 7,501 shares of common stock vested or to be vested pursuant to a restricted stock award of an aggregate of 30,000 shares pursuant to the 2002 Plan which vest in 24 equal monthly installments over a two year period, beginning on the one month anniversary of August 21, 2017, (iii) 28,127 shares of common stock vested or to be vested pursuant to a restricted stock award of an aggregate of 75,000 shares pursuant to the 2017 Equity Incentive Plan (the "2017 Plan") which vest in 24 equal monthly installments over a two year period, beginning on the one month anniversary of September 27, 2017, (iv) 100,341 shares of common stock vested or to be vested pursuant to a restricted stock award of an aggregate of 344,000 shares pursuant to the 2017 Plan which vest in 24 equal monthly installments over a two year period, beginning on the one month anniversary of November 3, 2017 and (v) options currently exercisable or exercisable within 60 days to purchase an aggregate of 100,000 shares of common stock at an exercise price of $10.00 per share pursuant to the 2017 Plan.  Also includes an aggregate of 12,500 shares held by ATG Capital LLC, for which Mr. O'Rourke is the managing member and sole beneficiary and in such capacity holds voting and dispositive power over the securities held by that entity. |
|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| (2) | Includes (i) 15,000 shares of common stock, (ii) 2,187 shares of common stock vested or to be vested pursuant to a restricted stock award of an aggregate of 7,500 shares pursuant to the 2017 Plan which vest in 24 equal monthly installments over a two year period, beginning on the one month anniversary of November 3, 2017 and (iii) 3,750 shares of common stock vested or to be vested pursuant to a restricted stock award of an aggregate of 7,500 shares pursuant to the 2017 Plan which vest in 6 equal monthly installments, beginning on the one month anniversary of March 21, 2018.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| (3) | Includes (i) 2,416 shares of common stock, (ii) 4,500 shares vested or to be vested of common stock pursuant to a restricted stock award of an aggregate of 12,000 shares pursuant to the 2002 Plan which vest in 24 equal monthly installments over a two year period, beginning on the one month anniversary of May 5, 2017, (iii) 3,751 shares of common stock vested or to be vested pursuant to a restricted stock award of an aggregate of 10,000 shares pursuant to the 2002 Plan which vest in 24 equal monthly installments over a two year period, beginning on the one month anniversary of August 21, 2017 and (iv) 3,750 shares of common stock vested or to be vested pursuant to a restricted stock award of an aggregate of 7,500 shares pursuant to the 2017 Plan which vest in 6 equal monthly installments, beginning on the one month anniversary of March 21, 2018.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| (4) | Represents vested portion of restricted stock grant of 45,000 shares issued February 23, 2018 under the 2017 Plan and 3,750 shares of common stock vested or to be vested pursuant to a restricted stock award of an aggregate of 7,500 shares pursuant to the 2017 Plan which vest in 6 equal monthly installments, beginning on the one-month anniversary of March 21, 2018.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| (5) | Represents portion of restricted stock grant of 60,000 shares that has vested or will vest within 60 days of March 22, 2018, issued under the 2017 Plan.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| (6) | Includes 8,334 shares representing portion of restricted stock grant of 50,000 shares that has vested or will vest within 60 days of April 24, 2018, and 16,666 shares underlying options representing portion of option grant of 50,000 options that has vested or will vest within 60 days of April 24, 2018.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| (7) | Includes (i) 1,009 shares of common stock, (ii) 63 shares of common stock held in Mr. McGonegal's IRA (iii) 20,000 shares of common stock vested or to be vested pursuant to a restricted stock award of an aggregate of 20,000 shares pursuant to the 2002 Plan which vests as of April 30, 2018 and (iv) 5,000 shares of common stock vested or to be vested pursuant to a restricted stock award of an aggregate of 5,000 shares pursuant to the 2017 Plan which vest in 7 equal monthly installments, beginning on October 31, 2017.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| (8) | Includes footnotes (1) through (7).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |

----

| Plan Category                                                   |   | Number of securities to be issued upon exercise of outstanding options |    |   | Weighted average exercise price of outstanding options |   |    | Number of securities remaining available for future issuance |   |
|-----------------------------------------------------------------|--------|------------------------------------------------------------------------|---------|--------|--------------------------------------------------------|--------|---------|--------------------------------------------------------------|--------|
|                                                            |   |                                                                   |    |   |                                                   |   |    |                                                         |   |
| Equity compensation plans approved by security holders     |   |                                                                   | 119,533 |   |                                                   | $      | 9.02    |                                                         |   |   | 329,000 |   |
|                                                            |   |                                                                   |    |   |                                                   |   |    |                                                         |   |   |   |   |
| Equity compensation plans not approved by security holders |   |                                                                   | — |   |                                                   |   | — |                                                         |   |   | — |   |
|                                                            |   |                                                                   |    |   |                                                   |   |    |                                                         |   |   |   |   |
| Total                                                           |   |                                                                   | 119,533 |   |                                                   | $      | 9.02    |                                                         |   |   | 329,000 |   |

----

|               |   | 2017   |    |   | 2016   |   |
|--------------------|--------|--------|---------|--------|--------|--------|
|               |   |   |    |   |   |   |
| Audit Fees         |   | $      | 268,000 |   |   | $      | 87,000 |   |
| Audit Related Fees |   |   | — |   |   |   | — |   |
| Tax Fees           |   |   | — |   |   |   | — |   |
| All Other Fees     |   |   | — |   |   |   | — |   |
| Total Fees         |   | $      | 268,000 |   |   | $      | 87,000 |   |
| ITEM 15. | EXHIBITS, FINANCIAL STATEMENT SCHEDULES. |
|----------|------------------------------------------|
| No.   |   | Exhibit                                                                                                                                                          |
|-------|--------|------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 31.1* |   | Certification of Principal Executive Officer pursuant to Item 601(b)(31) of Regulation S-K, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 |
| 31.2* |   | Certification of Principal Financial Officer pursuant to Item 601(b)(31) of Regulation S-K, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 |
| * | Filed herewith. |
|---|-----------------|

----

|   | RIOT BLOCKCHAIN, INC.                             |
|--------|---------------------------------------------------|
|   |                                              |
|   | /s/ John O'Rourke                                 |
|   | John O'Rourke,Chief Executive Officer             |
|   |                                              |
|   | /s/ Robby Chang                                   |
|   | Robby Chang,Chief Financial Officer               |
|   |                                              |
|   | /s/ Jeffrey G McGonegal                           |
|   | Jeffrey G. McGonegal,Principal Accounting Officer |
|   |                                                                             |
|--------|----------------------------------------------------------------------------------|
|   | /s/ John O'Rourke                                                                |
|   | John O'Rourke,Chief Executive Officer and Director (principal executive officer) |
|   |                                                                             |
|   | /s/ Robby Chang                                                                  |
|   | Robby Chang, Chief Financial Officer                                             |
|   |                                                                             |
|   | /s/ Jeffrey G. McGonegal                                                         |
|   | Jeffrey G. McGonegal, Principal Accounting Officer                               |
|   |                                                                             |
|   | /s/ Remo Mancini                                                                 |
|   | Remo Mancini, Director                                                           |
|   |                                                                             |
|   | /s/ Andrew Kaplan                                                                |
|   | Andrew Kaplan, Director                                                          |
|   |                                                                             |
|   | /s/ Jason Les                                                                    |
|   | Jason Les, Director                                                              |
|   |                                                                             |
|   |                                                                             |

----