Document:

Exhibit
10.52

 

BAKER
DRAFT 10/22/21

 

EMPLOYMENT
AGREEMENT

 

This
EMPLOYMENT AGREEMENT (this “Agreement”) between EcoChain, Inc., a Delaware corporation (the “Company”),
and John Belizaire (“Executive”) is contingent upon, and effective as of the date of, the consummation of that
proposed transaction (the “Transaction”, and the date of consummation of the Transaction, the “Effective
Date”) by and among Mechanical Technology, Incorporated, a Nevada corporation (“MTI”), SCI Merger
Sub, Inc., a Delaware corporation and wholly owned subsidiary of the Company, and Soluna Computing, Inc. (“SCI”),
a Delaware corporation, pursuant to an Agreement and Plan of Merger dated as of August 11, 2021 (as amended from time to time,
the “Merger Agreement”).

 

WHEREAS,
the execution and delivery of this Agreement, a Proprietary Rights and Restrictive Covenants Agreement between the Company
and Executive, and a Confirmatory Assignment by Executive dated October ____, 2021 (the “Confirmatory Assignment”)
(among other items) are conditions precedent to the closing of the Transaction; and

 

WHEREAS,
the Company desires to secure the services of Executive, Executive desires to commence employment with the Company, and each desires
to enter in an agreement to provide the terms of such employment as set forth herein.

 

NOW,
THEREFORE, the parties agree as follows:

 

1.            Definitions. As used herein, the following terms shall have the following meanings:

 

“Board”
means the Company’s Board of Directors.

 

“Cause”
means any of the following: (i) Executive’s theft, dishonesty, fraud, embezzlement, willful misconduct, breach of fiduciary
duty or material falsification of any Group Company documents or records; (ii) Executive’s material failure to abide by
a Group Company’s code of conduct or other policies (including policies relating to confidentiality and reasonable workplace
conduct) made available to the Executive; (iii) Executive’s unauthorized use, misappropriation, destruction or diversion
of any tangible or intangible asset or corporate opportunity of a Group Company (including the Executive’s improper use
or disclosure of a Group Company’s confidential or proprietary information); (iv) any misconduct, moral turpitude,
gross negligence or malfeasance of Executive that has or, in the good faith judgment of the Board, could reasonably be expected
to have, a material detrimental effect on a Group Company’s reputation or business; (v) Executive’s repeated willful
failure to perform Executive’s assigned duties after written notice from the Board of such failure; (vi) any material
breach by Executive of this Agreement (including, for the avoidance of doubt, the “PRRCA”, as defined further below);
or (vii) Executive’s conviction (including any plea of guilty or nolo contendere) of any criminal act involving fraud,
dishonesty, misappropriation or moral turpitude, or that materially and permanently impairs the Executive’s ability to perform
his duties with a Group Company; provided that in order for the Company’s termination or other claim based upon Cause
to be effective hereunder with respect to any failure or violation that the Board reasonably determines to be susceptible of cure,
Executive must have failed to cure such failure or violation during a period of thirty (30) days after Executive receives notice
from the Company of such failure or violation.

 

“Change
of Control” has the meaning specified in the Merger Agreement.

 

“Code”
means the United States Internal Revenue Code of 1986, as amended, and any applicable regulations and administrative guidelines.

 

    

     

    

 

“Committee”
means the compensation committee of the MTI Board.

 

“Disability”
means Executive’s inability to perform the essential duties, responsibilities and functions of Executive’s position
with the Company for a continuous period of ninety (90) days as a result of any mental or physical disability or incapacity, with
or without reasonable accommodation, all as determined by the Board in its reasonable discretion. Executive shall cooperate in
all respects with the Company if a question arises as to whether Executive has become Disabled (including, subject to restrictions
under any applicable law, submitting to an examination by a medical doctor or other health care specialists the Company selects
and authorizing such medical doctor or such other health care specialist to provide an opinion to the Company as to whether or
not Executive’s condition falls within the definition of “Disability”, but without disclosing any details of
Executive’s medical or psychological condition). Executive shall have the right to challenge any such opinion with a medical
opinion of Executive’s own medical doctor or health care specialist. In the event that the conclusions reached by such medical
doctors or healthcare specialists as to the question of whether or not Executive has a Disability differ, then the two medical
doctors or health care specialists providing the opinions shall agree on a third medical doctor or health care specialist, who
shall examine Executive and whose determination as to whether Executive has become disabled shall be binding on the parties.

 

“Good
Reason” means the occurrence of one or more of the following without Executive’s express written consent:

 

(i) the
Company demotes Executive from the position set forth in Section 2(b)(i) or materially reduces Executive’s responsibilities
(including reporting responsibilities) in a manner inconsistent with Executive’s position, other than temporarily while
Executive is physically or mentally incapacitated to a degree that would constitute a Disability if it continued for the requisite
number of days, or as required by applicable law;

 

(ii)
the Company materially breaches this Agreement, including, without limitation, by materially reducing Executive’s compensation
hereunder, including any material benefits or material reimbursements to be provided to Executive hereunder (in each case, other
than in connection with an across the board reduction of such compensation, benefits or reimbursements applicable to senior executives
of MTI and the Company generally);

 

(iii)
the Company causes Executive to report to a Person other than the Board or a committee thereof; or

 

(iv) the
Company changes Executive’s place of work to a location more than thirty (30) miles from the principal location from
which he works as of the Effective Date, and such change increases Executive’s one-way commute;

 

provided,
in each case, that Executive delivers written notice detailing the specific circumstance alleged to constitute Good Reason to
the Company within thirty (30) days after Executive has actual knowledge of the initial existence of such circumstance, the Company
fails to remedy such circumstance within thirty (30) days after it receives such notice from Executive, and Executive actually
terminates his employment within sixty (60) days following the expiration of the Company’s cure period described above.
Otherwise, any claim of such circumstance as “Good Reason” shall be deemed irrevocably waived by Executive.

 

“Group
Company” means the Company and each of its parent entities, subsidiary entities, and other affiliates.

 

    2

     

    

 

“Key
Performance Objectives” means those Company and/or personal performance objectives proposed by the MTI CEO, reviewed
by the Committee, and approved by the MTI Board within forty-five (45) days after the beginning of each calendar year during the
Employment Period, or, for the calendar year that contains the Effective Date, within forty-five (45) days after the Effective
Date.

 

“MTI
CEO” means the individual having the title of Chief Executive Officer of MTI.

 

“MTI
Board” means the board of directors of MTI.

 

“Person”
means an individual, a partnership, a corporation, an association, a limited liability company, a joint stock company, a trust,
a joint venture, an unincorporated organization, a governing body of any of the foregoing, or a governmental entity or any department,
agency or political subdivision thereof.

 

2.            Employment.

 

(a)    
      Employment; Termination. The Company agrees to employ Executive, and Executive
hereby accepts employment with the Company, effective as of the Effective Date, upon the terms and conditions set forth in
this Agreement. Executive’s employment under this Agreement shall commence on the Effective Date and shall continue for
thirty-six (36) calendar months (the “Initial Term”). Effective upon the expiration of the Initial Term
and of each “Additional Term” (as defined below), Executive’s employment under this Agreement will be
automatically extended, upon the same terms and conditions, for an additional twelve (12)-month period (each, an
“Additional Term”), unless, at least ninety (90) calendar days prior to the expiration of the Initial Term
or such Additional Term, as applicable, either Executive or the Company notifies the other party hereto in writing that such
extension will not take effect. Notwithstanding the foregoing, Executive’s employment under this Agreement, and the
Initial Term or any Additional Term, as applicable, shall terminate upon the earlier occurrence of any of the
following:

 

(i)           immediately
upon Executive’s death;

 

(ii)          immediately
upon the determination that Executive is Disabled as set forth above;

 

(iii)         upon
thirty (30) days’ advance written notice from Executive to the Company of Executive’s voluntary resignation of his
employment with the Company other than for Good Reason (which the Company may, in its sole discretion, make effective earlier
than any notice date);

 

(iv)         immediately
upon written notice from Executive to the Company of the Executive's resignation for Good Reason, subject to compliance with the
applicable notice and cure requirements in Section 1;

 

(v)
        immediately upon written notice from the Company to Executive of the termination of
Executive's employment for any reason other than Cause (which, for the avoidance of doubt, will not include any termination described
in clauses (i) or (ii) above); and

 

(vi)
      immediately upon written notice from the Company to Executive of the termination of
Executive's employment for Cause, subject to compliance with the applicable notice and cure requirements in Section 1.

 

    3

     

    

 

As
used in this Agreement, the phrase “Employment Period” means Executive’s period of employment from the
Effective Date until the date Executive’s employment ends for any reason. The effective date of any termination of the Employment
Period, and of Executive’s employment hereunder, is hereinafter referred to as the “Termination Date.”
Effective upon any Termination Date, this Agreement shall automatically terminate and shall be of no further force or effect,
except as otherwise provided in Section 7(a) hereof, and Executive shall immediately resign, in writing, from all positions then
held by Executive with the Company and its affiliates unless otherwise requested by the Company and agreed to by Executive.

 

For
the avoidance of doubt, Executive’s employment is at-will and either Executive or the Company may terminate the Employment
Period at any time, for any or no reason. The provisions in Section 2(d) shall govern the amount of compensation and benefits,
if any, to be provided to Executive upon termination of the Employment Period and of Executive’s employment hereunder, and
do not alter the Company’s right to terminate Executive’s employment at any time.

 

(b)         
Position and Duties.

 

(i)          Position. Commencing on the Effective Date and continuing during the Employment Period, Executive shall serve as the
President and Chief Executive Officer of the Company and shall report directly to the Board or a committee thereof.

 

(ii)         Responsibilities. In Executive’s capacity set forth in Section 2(b)(i), Executive will provide strategic and
tactical leadership to the Company, driving financial performance, managing the leadership team, and working with the Board or
a committee thereof to create value for constituents and elevate the Company’s reputation with all constituents, including
current and prospective partners, and will have such other and further duties and responsibilities as are customarily exercised
by an individual serving in Executive’s capacity at an entity of the Company’s size and nature, including but not
limited to direct supervision of and reporting from all other Company senior executives. Executive shall also perform and have
all such other and further duties and responsibilities commensurate with Executive’s position as and to the extent directed
or assigned by the Board or a committee thereof, and shall have such power and authority as shall reasonably be required to enable
him to perform such duties and responsibilities hereunder. Executive will also have such other duties and responsibilities, consistent
with Executive’s position, as are set forth in the Company’s organizational documents from time to time, and Executive
will faithfully perform all of Executive’s duties hereunder to the best of Executive’s ability. The MTI Board or the
Committee will provide a performance review to Executive on no less than an annual basis.

 

(iii)        Time to be Devoted to Employment. Except for vacation in accordance with Company policy, absences due to temporary
illness and other absences resulting from a Disability, Executive shall (A) devote substantially all of Executive’s
business time, attention, energy and skill to the Company’s business, subject, however, to such reasonable
time and effort as the Executive shall be required to devote to those efforts and activities set forth in Exhibit A (the
“Outside Responsibilities”); provided that Executive’s Outside Responsibilities shall not, individually
or in the aggregate, materially interfere with the Executive’s ability to discharge his duties and responsibilities hereunder;
(B) use Executive’s best efforts to promote the success of the Company’s businesses, and (C) cooperate fully
with the Board or a committee thereof in advancing the Company’s best interests. During the Employment Period, other than
with respect to any of the Outside Responsibilities, Executive shall not engage in any other business activity which, in the Board’s
reasonable judgment, would conflict with Executive’s ability to perform his duties hereunder, whether or not such activity
is pursued for gain, profit or other pecuniary advantage.

 

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(iv)         Work Location. Executive’s principal place of work shall be located in New York City, New York, or such other
location as Executive and the Company agree upon from time to time.

 

(v)          Policies. Executive will be subject to, and will comply with, the policies, standards and procedures generally applicable
and made available to the Company’s senior management employees from time to time.

 

(c)            Base Salary and Benefits.

 

(i)          Base Salary. During the Employment Period, the Company shall pay to Executive a base salary (the “Base Salary”)
at the annual rate of Three Hundred Fifty Thousand Dollars ($350,000). The Company shall pay the Base Salary in regular installments
in accordance with the Company’s general payroll practices, subject to customary withholding, payroll and other taxes. The
Base Salary will be subject to annual review by the MTI Board or the Committee during the Employment Period and, at the MTI Board’s
or the Committee’s sole option, may be increased, provided that at a minimum there shall be annual cost of living increases
proportionate to annual increases in the consumer price index published by the U.S. Bureau of Labor Statistics, and following
any such increase for all purposes hereunder such changed amount shall be Executive’s “Base Salary.”

 

(ii)         Performance Bonus. In addition to the Base Salary, for each calendar year ending during the Employment Period (each,
a “Bonus Year”), Executive shall be eligible to receive an annual bonus based on Executive's performance with
respect to the Key Performance Objectives in such Bonus Year (the “Performance Bonus”). Following the completion
of each Bonus Year, the MTI Board or the Committee shall determine, in good faith, whether Executive has achieved the Key Performance
Objectives for such year. Executive’s target Performance Bonus for each Bonus Year will be a cash bonus equal to One Hundred
Seventy-Five Thousand Dollars ($175,000), unless the MTI Board or the Committee and Executive agree on a different target amount
for such Bonus Year within forty-five (45) days after the start of such Bonus Year. The Performance Bonus shall be prorated on
a proportionate basis if Executive achieves at least 75%, but less than 100%, of the applicable Key Performance Objectives (it
being understood that no Performance Bonus shall be paid if Executive fails to achieve at least 75% of the applicable Key Performance
Objectives). No portion of the Performance Bonus is guaranteed but, if awarded based on achievement of all or a portion of the
applicable Key Performance Objectives, shall be earned by and paid to Executive by no later than March 15 of the calendar year
next following the Bonus Year to which it relates, contingent on Executive’s continued employment with the Company through
the last day of such Bonus Year, except as otherwise contemplated in Section 2(d)(ii)(3). The Performance Bonus shall be prorated
for any partial Bonus Year. The Performance Bonus shall be determined and paid in such a manner as qualifies for the “short-term
deferral” exemption from “Section 409A” (as defined below).

 

(iii)        Sign-On Equity Award. Subject to Executive’s continued employment with the Company through the “Grant Date”
(as defined below), within sixty (60) calendar days following the Effective Date, MTI shall grant (the actual date of such grant,
the “Grant Date”) Executive a one-time award of restricted stock units under an incentive equity plan maintained
by MTI with an aggregate ninety (90)-day trailing volume weighted average price as of the Grant Date equal to Eight Hundred Eleven
Thousand Four Hundred Ten Dollars ($811,410) (the “Sign-On Equity Award”). The Sign-On Equity Award shall be
subject to all of the terms and conditions of an incentive equity plan, an individual award agreement to be entered into by Executive
and MTI (the form of which is attached as Exhibit B hereto), and any other ancillary agreements that Executive may be required
to enter into as a condition of the award (collectively, the “Sign-On Equity Documents”). In the event of any
conflict between any terms of this Agreement and any terms of the Sign-On Equity Documents, the terms of the Sign-On Equity Documents
shall prevail, except to the extent otherwise expressly provided in the Sign-On Equity Documents.

 

    5

     

    

 

(iv)        Annual Equity Awards. Within thirty (30) days after January 1, 2022, and within thirty (30) days after each subsequent
January 1 during the Employment Period (the “Annual Equity Award Grant Date”), subject to such approvals as
are necessary to effectuate the grants contemplated by this paragraph, and Executive’s continued employment with the Company
through each applicable Annual Equity Award Grant Date, Executive shall be granted an annual equity award in the form of restricted
stock units under an incentive equity plan maintained by MTI (each an “Annual Equity Award”), subject to vesting
based on achievement of the applicable Key Performance Objectives as provided below. Executive also shall receive an Annual Equity
Award for 2021 within five (5) days after the Effective Date (the “2021 Annual Equity Award”). Each Annual Equity
Award shall have an aggregate grant date fair value based on the aggregate ninety (90)-day trailing volume weighted average price
as of the January 1 coinciding with or immediately preceding the Annual Equity Award Grant Date (or, in the case of the 2021 Annual
Equity Award, the grant date thereof) of One Hundred Seventy-Five Thousand Dollars ($175,000) (provided that the number of shares
underlying an Annual Equity Award and all other annual equity awards issued during the same calendar year to John Belizaire, Dipul
Patel, Phillip Ng, and Mohammed Larbi Loudiyi (or their affiliates and assigns, including, without limitation, ML&K Contractor),
in the aggregate, shall not exceed 2.5% of the then-issued and outstanding shares of MTI’s common stock (the “Annual
Limitation”), and to the extent there would be an excess, such Annual Equity Award, along with such other annual equity
awards, shall be proportionately reduced so as not to exceed the Annual Limitation). In addition, Annual Equity Awards (including,
but not limited to, the 2021 Annual Equity Award) shall be prorated for any partial fiscal year.

 

Following
the first anniversary of each Annual Equity Award Grant Date (or, in the case of the 2021 Annual Equity Award, after January 1,
2022), the MTI CEO shall determine, in good faith, subject to approval of the MTI Board or the Committee, whether Executive has
achieved the Key Performance Objectives for the corresponding Annual Equity Award. An Annual Equity Award will be fully vested
to the extent Executive has achieved 100% of such Key Performance Objectives. An Annual Equity Award will be partially vested
(with the remainder of such Annual Equity Award forfeited) on a proportionate basis if Executive achieves at least 75%, but less
than 100%, of such Key Performance Objectives. An Annual Equity Award shall be 100% forfeited if Executive fails to achieve at
least 75% of such Key Performance Objectives. In addition, any unvested Annual Equity Award shall become fully vested (A) upon
the consummation of a Change of Control, provided that Executive remains in employment with the Company through the Change of
Control date; and (B) upon a termination of Executive’s employment by the Company without Cause or by Executive with Good
Reason.

 

Each
Annual Equity Award shall be subject to all of the terms and conditions of an incentive equity plan, an individual award agreement
to be entered into by Executive and MTI, and any other ancillary agreements that Executive may be required to enter into as a
condition of the award (collectively, the “Annual Equity Documents”). In the event of any conflict between
any terms of this Agreement and any terms of the Annual Equity Documents, the terms of the Annual Equity Documents shall prevail,
except to the extent otherwise expressly provided in the Annual Equity Documents.

 

Notwithstanding
the foregoing, in the event the MTI Board or the Committee determines, in its sole and absolute discretion, that all necessary
or appropriate approvals for the grant of a given Annual Equity Award cannot be obtained, that an Annual Equity Award will be
reduced due to the Annual Limitation under the first paragraph of this clause (iv) above, or that any other circumstance makes
the grant of an Annual Equity Award impracticable or inadvisable, the Company, subject to the approval of the MTI Board or the
Committee, shall issue Executive, in lieu of such Annual Equity Award (or, in the event of a reduction due to the Annual Limitation
under the first paragraph of this clause (iv) above, in lieu of the portion of such Annual Equity Award reduced thereunder), at
the time and subject to the grant conditions set forth in the preceding paragraph, a cash-based award or debt note (such note
to carry interest at the then-applicable federal funds rate from the later of the date on which the award vests and the date on
which the award must be paid to Executive pursuant to its terms, to the date on which the note is settled), as determined by the
MTI Board or the Committee, with pre-tax economic value substantially equivalent to the pre-tax economic value of such Annual
Equity Award or portion thereof and, to the extent practicable and permitted by applicable law, on substantially the same terms,
as such Annual Equity Award.

 

    6

     

    

 

(v)          Business Expenses. The Company shall reimburse Executive for all reasonable expenses that he incurs in performing his
duties hereunder during the Employment Period, in each case subject to the terms and conditions of the Company’s policies
in effect from time to time with respect to travel, entertainment and other business expenses. Executive shall furnish the Company
with evidence relating to such expenses as the Company reasonably requires to substantiate such expenses.

 

(vi)         Employee Benefits. Executive will be eligible for all customary and usual employee benefits generally available to
the Company’s executives subject to the terms and conditions of the Company’s benefit plan documents. The Company
reserves the right to change or eliminate its employee benefits arrangements on a prospective basis, at any time and without notice.
Executive will be eligible for vacation time during the Employment Period in accordance with the Company’s vacation policy.
Following the Termination Date, Executive may have the right to continue coverage under the Company’s health insurance plan
for a period of time in accordance with and subject to the Consolidated Omnibus Budget Reconciliation Act of 1985, as amended
(“COBRA”).

 

(vii)       Tax Withholding. To the extent then permitted under the terms of the governing incentive equity plan, Executive will
be permitted to elect to have any required tax withholding with respect to the Sign-On Equity Award or Annual Equity Awards satisfied
by having MTI withhold restricted stock units otherwise deliverable to Executive with respect to such Sign-On Equity Award or
Annual Equity Awards, as the case may be.

 

(d)           Effect of Termination.

 

(i)          If the Employment Period, and Executive’s employment hereunder, is terminated (A) due to non-renewal of the Employment
Period by either party under Section 2(a), (B) by the Company for Cause under Section 2(a)(vi) or due to Executive’s Disability
under Section 2(a)(ii), (C) by reason of Executive’s death under Section 2(a)(i), or (D) by Executive’s
resignation other than for Good Reason under Section 2(a)(iii), Executive or his estate, as the case may be, shall be entitled
to the following (collectively, the payments and benefits described in Sections 2(d)(i)(1) through 2(d)(i)(4) hereof shall be
hereafter referred to as the “Accrued Benefits”):

 

(1)
all previously earned and accrued but unpaid Base Salary through the Termination Date, paid on the next regularly scheduled date
for the Company to make payroll payments following Termination Date or such earlier date as may be required by applicable law;

 

(2)
subject to Section 2(c)(v), all previously approved but unreimbursed expenses incurred by the Executive through the Termination
Date, paid within sixty (60) days following Termination Date or such earlier date as may be required by applicable law or as set
forth in the Company’s expense reimbursement policy;

 

(3)
any accrued but unused paid vacation time, paid subject to and in accordance with Company policy; and

 

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(4)
all other payments and benefits to which Executive shall be entitled under the terms of any employee benefit plan of the Company,
paid or provided subject to and in accordance with the terms of such plan.

 

(ii)         If the Employment Period, and Executive’s employment hereunder, is terminated (A) by the Company other than for Cause
under Section 2(a)(v) or (B) by Executive for Good Reason under Section 2(a)(iv), Executive shall be entitled to the Accrued Benefits
and, subject to Executive’s compliance with the Release Condition in Section 2(d)(iv), may also receive the following
additional payments:

 

(1)
a severance payment in an amount equal to Executive’s Base Salary for six (6) months (the “Severance Period”),
paid in equal monthly installments on regular Company payroll dates over the Severance Period following the Termination Date (the
“Severance Payment”); provided that the first installment of the Severance Payment will be paid on the
first regular Company payroll date next following the sixtieth (60th) calendar day following the Termination Date and will include
payment of any installment payments that were otherwise due prior thereto;

 

(2)
the Performance Bonus (if any) earned for the most recently-completed Bonus Year preceding the Termination Date in accordance
with Section 2(c)(ii) based on actual attainment of the applicable Key Performance Objectives for such year, to the extent unpaid
as of the Termination Date, paid in a single lump sum in cash on the first regular Company payroll date next following the sixtieth
(60th) calendar day following the Termination Date (the “Prior Year Bonus”);

 

(3)
the Performance Bonus (if any) earned for the Bonus Year containing the Termination Date in accordance with Section 2(c)(ii) based
on actual attainment of the applicable Key Performance Objectives for such year, which shall be paid in its entirety if the applicable
Key Performance Objectives were achieved prior to the end of the Employment Period, and which otherwise shall be prorated based
on the ratio of the number of days employed during such year to three hundred sixty-five (365) (the “Current Year Bonus”),
in each case paid in a single lump sum in cash when annual bonuses for such Bonus Year are paid to other executives, but in no
event later than the next following March 15.

 

(4)
subject to (x) Executive’s eligibility for and timely election of continuation coverage under COBRA, and (y) Executive’s
continued copayment of premiums at the same level and cost to Executive as if Executive were an employee of the Company (excluding,
for purposes of calculating cost, an employee’s ability to pay premiums with pre-tax dollars), continued copayment by the
Company for Executive’s coverage under the Company’s group health plan during the eighteen (18)-month period following
the Termination Date to the same extent that the Company paid for such coverage immediately prior to the Termination Date, in
a manner intended to avoid any excise tax under Section 4980D of the Code, subject to the eligibility requirements and other terms
and conditions of such insurance coverage (the “COBRA Subsidy”).

 

(iii)       The treatment of the Sign-On Equity Award, each Annual Equity Award, and any other equity or equity-based award upon any termination
of Executive’s employment hereunder shall be subject to the documents and agreements governing such awards.

 

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(iv)        Executive shall be eligible to receive the Severance Payment, the Prior Year Bonus, the Current Year Bonus, and the COBRA
Subsidy only if (A) Executive remains in compliance with Section 3 at all times, and (B) Executive has executed and
delivered to the Company a general release of claims in the form then provided by the Company to Executive (the “General
Release”), which General Release has become effective and irrevocable according to its terms no later than 60 days following
the Termination Date, and only so long as Executive has not revoked or breached any of the provisions of the General Release and
does not subsequently breach any such provisions (the “Release Condition”). To the extent that any amount under
Section 2(d) constitutes “deferred compensation” for purposes of Section 409A, any payment of such amount scheduled
to occur during the first sixty (60) days following the Termination Date shall not be made until the Company’s first regularly
scheduled pay period next following the sixtieth (60th) day after the Termination Date and shall include payment of all amounts
that were otherwise scheduled to be paid prior thereto.

 

(v)          The payments and benefits described in this Section 2(d) shall be in full and complete satisfaction of Executive’s rights
and entitlements under this Agreement and any other claims that Executive may have in respect of Executive’s employment
with the Company or any of its affiliates, and Executive acknowledges that such amounts are fair and reasonable, and are Executive’s
sole and exclusive remedy, in lieu of all other remedies at law or in equity, with respect to the termination of Executive’s
employment hereunder or any breach of this Agreement. As of the date of the final payment described in this Section 2(d), the
Company shall not have any further obligation to Executive under this Agreement or otherwise, except as may be required by law.

 

(vi)        The Company’s obligation to make the payments provided for in this Agreement and otherwise to perform its obligations
hereunder shall not be affected by any set-off, counterclaim, recoupment, defense or other claim, right or action which the Company
may have against Executive or others. In no event shall Executive be obligated to seek other employment or take any other action
by way of mitigation of the amounts payable to Executive under any of the provisions of this Agreement and such amounts shall
not be reduced whether or not Executive obtains other employment.

 

(e)            Indemnification; D&O Coverage.

 

(i)          The
Company will indemnify Executive to the full extent required under the Company’s Certificate of Incorporation and Bylaws,
and under applicable law.

 

(ii)         MTI
or the Company will maintain a directors’ and officers’ liability insurance policy (or policies) providing coverage
for Executive that is no less favorable to him in any respect (including as to the length of any post-employment tail coverage)
than the coverage then being provided to any other officer or director of MTI.

 

3.            Proprietary Rights and Restrictive Covenants. Concurrently herewith, Executive shall enter into a Proprietary Rights
and Restrictive Covenants Agreement with the Company in the form attached as Exhibit C hereto (the “PRRCA”),
which is hereby made a part hereof, and hereby agrees to comply in full with all of the terms and conditions thereof.

 

4.            Notices. All notices, demands or other communications to be given or delivered under or by reason of the provisions
of this Agreement will be in writing and will be deemed to have been given when delivered personally, the third Business Day after
having been mailed by certified or registered mail, return receipt requested and postage prepaid, or the first Business Day after
the date sent via a nationally recognized overnight courier. “Business Day” is any day other than a Saturday,
Sunday or a day on which banks in California are required or authorized to be closed. Such notices, demands and other communications
will be sent to the address indicated below:

 

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To
the Company:

 

EcoChain,
Inc. 

Attention:
Board of Directors 

325
Washington Ave. Extension 

Albany
NY 12205

  

With
a copy (which shall not constitute notice) to:

 

Jackson
Lewis P.C. 

Attention:
Kenneth C. Weafer, Attorney at Law 

677
Broadway, 9th Floor 

Albany,
NY 12207

 

To
Executive:

 

To
Executive at Executive’s most recent address in the Company’s records

 

or
such other address or to the attention of such other person as the recipient party shall have specified by prior written notice
to the sending party.

 

5.            Dispute Resolution.

 

(a)      
    Agreement to Arbitrate. Any dispute, claim, or controversy between the parties arising out
of or in connection with this Agreement, or the employment relationship, shall be settled by binding arbitration under the
Employment Arbitration Rules of the American Arbitration Association then in effect, provided, however, either party may
request provisional, injunctive or extraordinary relief from a court of competent jurisdiction, under applicable law of the
State of New York, if necessary to preserve the status quo pending arbitration. The arbitrator shall have the exclusive
authority to resolve any dispute relating to the arbitrability of any individual claim or the enforceability or formation of
this Agreement. The arbitration proceeding shall be conducted in English, before a single arbitrator, and any hearing shall
be held in New York City, New York. The cost of such arbitration shall be borne by the Company; however, each party shall be
responsible for its own attorney fees. This arbitration clause shall survive the termination of this Agreement. This
Agreement to arbitrate disputes is governed by the Federal Arbitration Act (9 U.S.C. Sections 1, et seq.). The arbitrator
shall apply the substantive law relating to all claims and defenses to be arbitrated the same as if the matter had been heard
in court, including with respect to the award of any remedy or relief on an individual basis and any award of costs and
attorneys’ fees to the prevailing party. The decision of the arbitrator shall be binding, and judgment thereon may be
entered by any court of competent jurisdiction. Any type of class, collective claims or multi-party claims are expressly
prohibited, and the arbitrator will have no authority to alter the parties’ agreement in this regard. In the event of
any legal proceeding between the Company and Executive relating to this Agreement, neither party may claim the right to a
trial by jury, and both parties waive any right they may have under applicable law or otherwise to a trial by jury. To the
extent permitted by applicable law, the arbitration shall be kept confidential and the existence of the arbitration
proceeding and any element of it (including but not limited to any pleadings, briefs or other documents submitted and
exchanged and testimony or other oral submissions and any awards made) shall not be disclosed beyond the arbitrator, the
parties hereto, their counsel and any person to whom disclosure is necessary to the conduct of the proceeding. Nothing in
this Agreement prevents Executive from reporting good faith allegations of unlawful employment practices to appropriate
federal, state or local agencies; reporting any good faith allegation of criminal conduct to any appropriate federal, State,
or local official; participating in a proceeding with any appropriate federal, State, or local government agency enforcing
discrimination laws; making any truthful statements or disclosures required by law, regulation, or legal process; or
requesting or receiving confidential legal advice.

 

    10

     

    

 

(b)   
       Consideration. The mutual promise by the Company and Executive to
arbitrate all disputes between them, rather than to litigate them before the courts or other bodies, provides the
consideration for this agreement to arbitrate. The Company’s offer of employment to Executive and the Company’s
agreement to pay all fees and costs unique to arbitration serve as additional consideration.

 

6.            Clawback. All amounts paid or provided to Executive hereunder shall be subject to any clawback or recoupment policy
that may be maintained by the Company from time to time, and the requirements of any law or regulation applicable to the Company
and governing the clawback or recoupment of executive compensation, or as set forth in any final non-appealable order by any court
of competent jurisdiction or arbitrator.

 

7.            Miscellaneous.

 

(a)    
      Survival. Sections 2(d), and 3 through 7 shall survive
and shall continue in full force and effect in accordance with their respective terms notwithstanding any expiration or
termination of the Employment Period and/or this Agreement.

 

(b)    
      Severability. Whenever possible, each provision of this Agreement will be
interpreted in such manner as to be effective and valid under applicable law, but if any provision of this Agreement is held
to be invalid, illegal or unenforceable in any respect under any applicable law or rule in any jurisdiction, such invalidity,
illegality or unenforceability will not affect any other provision or any other jurisdiction, but this Agreement will be
reformed, construed and enforced in such jurisdiction as if such invalid, illegal or unenforceable provision had never been
contained herein.

 

(c)    
      Complete Agreement. This Agreement, together with its exhibits and
attachments, and the Confirmatory Assignment, embodies the parties’ complete agreement and understanding regarding the
subject matter hereof and supersedes and preempts any prior understandings, agreements or representations by or between the
parties, as well as by or between the Executive and SCI, written or oral, which may have related to the subject matter hereof
in any way.

 

(d)      
    Successors and Assigns. Except as otherwise provided herein, this Agreement shall bind and
inure to the benefit of and be enforceable by Executive and the Company, and their respective heirs, executors, successors,
assigns and legal representatives; provided, that the services provided by Executive hereunder are of a personal
nature and the rights and obligations of Executive hereunder shall not be assignable. Notwithstanding the foregoing, the
Company may assign this Agreement, and its rights and obligations hereunder, to any successor to all or substantially all of
the business and/or assets of the Company, provided that the Company shall require such successor to expressly assume and
agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform it if
no such succession had taken place (and any such successor shall thereafter become the “Company” for purposes of
this Agreement), and provided further that nothing herein shall modify any rights Executive has pursuant to this Agreement
that are triggered by a Change of Control (or similar term).

 

    11

     

    

 

(e)           Governing Law and Forum Selection Clause. Except as provided in Section 5, the law of the State of New York shall govern
all questions concerning the construction, validity, interpretation and enforceability of this Agreement, and the performance
of the obligations imposed by this Agreement, without giving effect to any choice of law or conflict of law rules or provisions.
Each party submits to the jurisdiction of the state and federal courts located in New York City, New York in any action or proceeding
arising out of or relating to this Agreement and agrees that all claims in respect of the action or proceeding may be heard and
determined in any such court. Each party also agrees not to bring any action or proceeding arising out of or relating to this
Agreement in any other court. Each party waives any defense of inconvenient forum to the maintenance of any action or proceeding
so brought and waives any bond, surety or other security that might be required of the other party with respect thereto. A party
may make service on the other party by sending or delivering a copy of the process to the party to be served at the address and
in the manner provided for the giving of notices in Section 4. Nothing in this Section 7(e), however, shall affect a party’s
right to serve legal process in any other manner permitted by law or at equity. Each party agrees that a final judgment in any
action or proceeding so brought shall be conclusive and may be enforced by suit on the judgment or in any other manner provided
by law or at equity.

 

(f)            Executive’s Cooperation. During the Employment Period and thereafter Executive shall cooperate with the Company
and its affiliates in any internal investigation or administrative, regulatory or judicial proceeding as reasonably requested
by the Company (including Executive being available to the Company upon reasonable notice for interviews and factual investigations,
appearing at the Company's request to give testimony without requiring service of a subpoena or other legal process, volunteering
to the Company all pertinent information and turning over to the Company all relevant documents which are or may come into Executive's
possession, all at times and on schedules that are reasonably consistent with Executive's other permitted activities and commitments).
Such services will be without additional compensation if Executive is then employed by the Company and for reasonable compensation
if Executive is not then employed by the Company. The provisions of this Section 7(f) shall not apply to legal actions between
Executive and the Company.

 

(g)           Consent and Waiver by Third Parties. Executive represents and warrants that his employment with the Company on the
terms and conditions set forth herein and his execution and performance of this Agreement do not constitute a breach or violation
of any other agreement, obligation or understanding with any third party. Executive represents that he is not bound by any agreement
or any other existing or previous business relationship which conflicts with, or may conflict with, the performance of his obligations
hereunder or prevent the full performance of his duties and obligations hereunder, and that, upon the execution and delivery of
this Agreement by the parties, this Agreement shall be a valid and binding obligation of Executive, enforceable against Executive
in accordance with its terms, except to the extent that enforceability may be limited by applicable bankruptcy, insolvency or
similar laws affecting the enforcement of creditors’ rights generally.

 

(h)           Amendment and Waiver. The provisions of this Agreement may be amended and waived only with the prior written consent
of the Company and Executive. No waiver shall be effective unless in a writing signed by the person against whom such waiver is
sought to be enforced. The failure of a party to insist upon strict adherence to any term of this Agreement on any occasion shall
not be considered a waiver thereof or deprive that party of the right thereafter to insist upon strict adherence to that term
or any other term of this Agreement.

 

(i)            No Strict Construction. The language used in this Agreement shall be deemed to be the language chosen by the parties
to express their mutual intent, and no rule of strict construction shall be applied against either party.

 

(j)            Tax Matters.

 

(1)
Tax Withholding. The Company shall withhold from any compensation and benefits payable under this Agreement all
applicable federal, state, local, or other taxes, and any other applicable withholdings.

 

    12

     

    

 

(2)
Section 409A.

 

(i)       The
parties intend for payments and benefits hereunder to either comply with, or be exempt from, Section 409A of the Code and the
regulations promulgated thereunder (collectively “Section 409A”) and, accordingly, to the maximum extent permitted,
this Agreement shall be interpreted and construed consistent with such intent. To the extent that any provision hereof is modified
in order to comply with Section 409A, such modification shall be made in good faith and shall, to the maximum extent reasonably
possible, maintain the original intent and economic benefit to Executive and the Company of the applicable provision without violating
the provisions of Section 409A. Notwithstanding the foregoing, the Company does not guarantee any particular tax result, and in
no event whatsoever shall the Company, its affiliates, or their respective officers, directors, employees, counsel or other service
providers be liable for any tax, interest or penalty that may be imposed on Executive by Section 409A or damages for failing to
comply with Section 409A.

 

(ii)
To the extent that reimbursements or other in-kind benefits hereunder constitute “deferred compensation” for purposes
of Section 409A, (x) all expenses or other reimbursements hereunder shall be made on or prior to the last day of the taxable year
following the taxable year in which such expenses were incurred by Executive, (y) any right to reimbursement or in-kind benefits
shall not be subject to liquidation or exchange for another benefit, and (z) no such reimbursement, expenses eligible for reimbursement,
or in-kind benefits provided in any taxable year shall in any way affect the expenses eligible for reimbursement, or in-kind benefits
to be provided, in any other taxable year.

 

(iii)
For purposes of Section 409A, Executive’s right to receive installment payments pursuant to this Agreement shall be treated
as a right to receive a series of separate and distinct payments. Whenever a payment hereunder specifies a payment period with
reference to a number of days, the actual date of payment within the specified period shall be within the sole discretion of the
Company.

 

(iv)
Any other provision of this Agreement to the contrary notwithstanding, in no event shall any payment or benefit hereunder that
constitutes “deferred compensation” for purposes of Section 409A be subject to offset by any other amount unless otherwise
permitted by Section 409A.

 

(v)
A termination of employment shall not be deemed to have occurred for purposes of any provision of this Agreement providing for
the payment of any amounts or benefits upon or following a termination of employment unless such termination is also a “separation
from service” within the meaning of Section 409A, and, for purposes of any such provision, all references in this Agreement
to Executive’s “termination”, “termination of employment” and like terms shall mean Executive’s
“separation from service” with the Company.

 

(vi)
Notwithstanding any other provision of this Agreement to the contrary, if, at the time of Executive’s separation from service,
Executive is a “Specified Employee”, then the Company will defer the payment or commencement of any nonqualified deferred
compensation subject to Section 409A payable upon separation from service (without any reduction in such payments or benefits
ultimately paid or provided to Executive) until the date that is six (6) months following separation from service or, if earlier,
the earliest other date as is permitted under Section 409A (and any amounts that otherwise would have been paid during this deferral
period will be paid in a lump sum on the day after the expiration of the six (6) month period or such shorter period, if applicable).
Executive will be a “Specified Employee” for purposes of this Agreement if, on the date of Executive’s separation
from service, Executive is an individual who is, under the method of determination adopted by the Company, designated as, or within
the category of employees deemed to be, a “Specified Employee” within the meaning and in accordance with Treasury
Regulation Section 1.409A-1(i). The Company shall determine in its sole discretion all matters relating to who is a “Specified
Employee” and the application of and effects of the change in such determination.

 

    13

     

    

 

(k)           Parachute Payments. In the event that any payments and other benefits provided for in this Agreement or otherwise payable
to Executive constitute “parachute payments” within the meaning of Section 280G of the Code, and, but for this paragraph,
would be subject to the excise tax imposed by Section 4999 of the Code, then any post-termination severance payments and benefits
payable under this Agreement or otherwise will be either (1) delivered in full or (2) delivered as to such lesser extent which
would result in no portion of such payments and benefits being subject to excise tax under Section 4999 of the Code, whichever
of the foregoing amounts, taking into account the applicable federal, state and local income taxes and the excise tax imposed
by Section 4999 of the Code, results in the receipt by Executive, on an after-tax basis, of the greatest amount of payments and
benefits, notwithstanding that all or some portion of such benefits may be taxable under Section 4999 of the Code. If a reduction
in Executive’s payments and benefits is necessitated by the preceding sentence, such reduction will occur in the following
order: (i) any cash severance based on a multiple of base salary or annual bonus, (ii) any other cash amounts payable to Executive,
(iii) benefits valued as parachute payments, and (iv) acceleration of vesting of any equity awards. Unless the Company and Executive
otherwise agree in writing, any determination required under this paragraph will be made in writing by the Company’s or
its affiliates’ independent public accountants (the “Firm”), whose determination will be conclusive and
binding upon Executive and the Company. For purposes of making the calculations required by this paragraph, the Firm may make
reasonable assumptions and approximations concerning applicable taxes and may rely on reasonable, good faith interpretations concerning
the application of Sections 280G and 4999 of the Code. The Company and Executive will furnish to the Firm such information and
documents as the Firm may reasonably request in order to make a determination under this paragraph. The Company will bear all
costs the Firm may incur in connection with any calculations contemplated by this paragraph.

 

(l)            Headings. Section headings are used herein for convenience of reference only and shall not affect the meaning of any
provision of this Agreement.

 

(m)          Counterparts; Facsimile Signatures. This Agreement may be executed in separate counterparts, each of which is deemed
to be an original and all of which taken together constitute one and the same agreement. Facsimile, PDF, and electronic counterpart
signatures to and versions of this Agreement shall be acceptable and binding on the parties.

 

[Signature
Page Follows]

 

    14

     

    

 

IN
WITNESS WHEREOF, the parties have executed this Agreement on or as of the ____ day of ____________, 2021.

 

	 	EcoChain,
    INC.	 
	 	 	 
	 	By:	          	 
	 	 	 	 
	 	Name:	      	 
	 	 	 	 
	 	Its:	     	 
	 	 	 
	 	EXECUTIVE	 
	 	 	 
	 	 	 

 

 

    15

     

    

 

EXHIBIT
A

 

OUTSIDE
RESPONSIBILITIES

 

[Executive
to provide proposed list, if any.]

 

    

     

    

 

EXHIBIT
B

 

FORM
OF SIGN-ON EQUITY AWARD AGREEMENT

 

    

     

    

 

EXHIBIT
C

 

PROPRIETARY
RIGHTS AND RESTRICTIVE COVENANTS AGREEMENTExhibit
10.53

 

FORM
OF Promissory Note (2022)

 

Soluna
Holdings, Inc.

 

Promissory
Note

 

	Face Amount:       $__,000,000.00 	, 2022

New
York, NY

 

FOR
VALUE RECEIVED, the undersigned Soluna Holdings, Inc., a Nevada corporation (the “Borrower”), promises to pay
to the order of [____], its successors or assigns (the “Lender”), [_____] MILLION DOLLARS ($__,000,000) (the
“Face Amount”) by           , 2027 (the “Maturity Date”) as provided herein or on such earlier date
as this Note is required or permitted to be repaid as provided hereunder.

 

Section
1.             Maturity; Interest. The Face
Amount shall be repaid in cash at the Maturity Date; provided, that this Note may be prepaid in whole or in part at any time and
from time-to-time upon three (3) prior business days’ written notice, without penalty. This Note shall bear interest at
the annual rate of two percent (2%) per annum.

 

Section
2.             Repayment. Repayment of the
Note may occur as follows: (a) at the Maturity Date or (b) upon the first business day of each month that the Borrower keeps open
a private offering of its 9.0% Series A Cumulative Perpetual Preferred Stock (the “Preferred Stock”), at
the Lender’s sole election upon written notice to Borrower, the Lender shall have the right but not the obligation to subscribe
for shares of Preferred Stock by presenting this Note in whole or in part as legal tender to purchase such shares of Preferred
Stock at price per share of Preferred Stock on the date immediately preceding the closing of such subscription. So long as no
Event of Default has occurred, such repayment shall satisfy Borrower’s obligations pursuant to this Note in full and this
Note shall be of no further force and effect. Notwithstanding anything herein to the contrary, if this Note is not repaid by May
2, 2022, then this Note shall automatically without any further action by either the Borrower or Lender be subscribed for the
Preferred Stock.

 

Section
3.              Transferability. This Note
and any of the rights granted hereunder are freely transferable or assigned by Lender, in whole or in part, in its sole discretion;
provided, there is notice to the Borrower.

 

Section
4.              Event of Default.

 

(a)           In
the event that any one of the following events shall occur (whatever the reason and whether it shall be voluntary or involuntary
or effected by operation of law or pursuant to any judgment, decree or order of any court, or any order, rule or regulation of
any administrative or governmental body), it shall be deemed an Event of Default:

 

(i)          Any default in the payment of the principal of, interest on or other charges in respect of this Note, or any other note issued
by the Borrower for the benefit of the Lender or any other creditor, as and when the same shall become due and payable;

 

    

     

    

(ii)         Borrower shall fail to observe or perform any other material covenant, agreement or warranty contained in, or otherwise commit
any breach or default of any provision of this Note or any other agreement between the Borrower and the Lender or any other creditor;

 

(iii)        There shall be a breach of any of the representations and warranties set forth in this Note or any transaction document executed
contemporaneously herewith; or

 

(iv)        Borrower, shall commence, or there shall be commenced against Borrower any applicable bankruptcy or insolvency laws as now or
hereafter in effect or any successor thereto, or Borrower commences any other proceeding under any reorganization, arrangement,
adjustment of debt, relief of debtors, dissolution, insolvency or liquidation or similar law of any jurisdiction whether now or
hereafter in effect relating to Borrower or there is commenced against Borrower any such bankruptcy, insolvency or other proceeding
which remains undismissed for a period of sixty (60) days; or Borrower is adjudicated insolvent or bankrupt; or any order of relief
or other order approving any such case or proceeding is entered; or Borrower suffers any appointment of any custodian, private
or court appointed receiver or the like for it or any substantial part of its property which continues undischarged or unstayed
for a period of sixty (60) days; or Borrower makes a general assignment for the benefit of creditors; or Borrower shall fail to
pay or shall state that it is unable to pay or shall be liable to pay, its debts as they become due or by any act or failure to
act expressly indicate its consent to, approval of or acquiescence in any of the foregoing; or any corporate or other action is
taken by the Borrower for the purpose of effecting any of the foregoing.

 

(b)           Upon the occurrence of an Event of Default, the Lender shall give the Borrower notice of such occurrence, at which time the Borrower
shall have five (5) business days from receipt of such notice to pay the outstanding amount of the Note in full. In the event
that full payment is not made upon the expiry of the five (5) day period, a default penalty equal to 0.666% of the Face Amount
per month during the period of Default (the “Default Penalty”). Lender may then, at its sole discretion declare
the entire then outstanding Face Amount of this Note and any accrued but unpaid interest due hereunder immediately due and payable
(a “Default Declaration”), in which event the Lender may, at its sole discretion take any action it deems necessary
to recover amounts due under this Note.

 

(c)           Upon the occurrence of an Event of Default, the Lender shall be entitled to receive, in addition to the Face Amount of the Note
and any accrued but unpaid interest due hereunder,, the Lender shall be entitled to recover all of its costs, fees (including
without limitation, reasonable attorney’s fees and disbursements), and expenses relating collection and enforcement Note,
including all costs and expenses incurred by it in enforcing its rights under the Note and any transaction document entered into
contemporaneously herewith.

 

    2

     

    

 

(d)           The failure of Lender to exercise any of its rights hereunder in any particular instance shall not constitute a waiver of the
same or of any other right in that or any subsequent instance with respect to Lender or any subsequent holder. BORROWER ACKNOWLEDGES
THAT THE LOAN EVIDENCED BY THIS NOTE IS A COMMERCIAL TRANSACTION. BORROWER FURTHER WAIVES DILIGENCE, DEMAND, PRESENTMENT FOR PAYMENT,
NOTICE OF NONPAYMENT, PROTEST AND NOTICE OF PROTEST, AND NOTICE OF ANY RENEWALS OR EXTENSIONS OF THIS NOTE. BORROWER ACKNOWLEDGES
THAT IT MAKES THIS WAIVER KNOWINGLY, VOLUNTARILY, WITHOUT DURESS AND ONLY AFTER CONSIDERATION OF RAMIFICATION THIS WAIVER WITH
ITS ATTORNEYS. Lender may immediately and without expiration of any grace period enforce any and all of its rights and remedies
hereunder and all other remedies available to it under applicable law. The remedies available to the Lender upon the occurrence
of an Event of Default shall be cumulative.

 

Section
5.             Notices. Any and all notices,
service of process or other communications or deliveries required or permitted to be given or made pursuant to any of the provisions
of this Note shall be deemed to have been duly given or made for all purposes when hand delivered or sent by certified or registered
mail, return receipt requested and postage prepaid, overnight mail or courier as follows: 

If
to Lender, at:

 

[____]

 

Attn:

 

Or
such other address as may be given to the Borrower from time to time

 

If
to Borrower, at:

 

Soluna
Holdings, Inc. 

325
Washington Avenue Extension 

Albany,
New York 12205 

Attn:
 Michael Toporek, CEO

 

Or
such other address as may be given to the Lender from time to time

 

    3

     

    

 

Section
6.             Usury. This Note is hereby
expressly limited so that in no event whatsoever, whether by reason of acceleration of maturity of the loan evidenced hereby or
otherwise, shall the amount paid or agreed to be paid to the Lender hereunder for the loan, use, forbearance or detention of money
exceed that permissible under applicable law. If at any time the performance of any provision of this Note or of any other agreement
or instrument entered into in connection with this Note involves a payment exceeding the limit of the interest that may be validly
charged for the loan, use, forbearance or detention of money under applicable law, then automatically and retroactively, ipso
facto, the obligation to be performed shall be reduced to such limit, it being the specific intent of the Borrower and the Lender
that all payments under this Note are to be credited first to interest as permitted by law, but not in excess of (i) the
agreed rate of interest set forth herein or therein or (ii) that permitted by law, whichever is the lesser, and the balance
toward the reduction of principal. The provision of this Section 6 shall never be superseded or waived and shall control every
other provision of this Note and all other agreements and instruments between the Borrower and the Lender entered into in connection
with this Note. To the extent permitted by applicable law, Borrower waives any right to assert the defense of usury.  

 

Section
7.             Governing Law; Waiver of Jury
Trial. This Note and the provisions hereof are to be construed according to and are governed by the laws of the State of Nevada,
without regard to principles of conflicts of laws thereof. Borrower agrees that the state and federal courts sitting in Clark
County, Nevada shall have exclusive jurisdiction in connection with any dispute concerning or arising out of this Note or otherwise
relating to the parties relationship. In any action, lawsuit or proceeding brought to enforce or interpret the provisions of this
Note and/or arising out of or relating to any dispute between the parties, Lender shall be entitled to recover all of its costs
and expenses relating collection and enforcement of this Note (including without limitation, reasonable attorney’s fees
and disbursements) in addition to any other relief to which Lender may be entitled and all costs of collection, including any
legal fees associated with this Note will be paid by the Borrower. Each party agrees that any process or notice to be served or
delivered in connection with any action, lawsuit or proceeding brought hereunder may be accomplished in accordance with the notice
provisions set forth above or as otherwise provided by applicable law. BORROWER HEREBY WAIVES TRIAL BY JURY IN ANY ACTION,
PROCEEDING, CLAIM OR COUNTERCLAIM, WHETHER IN CONTRACT OR TORT, AT LAW OR IN EQUITY, ARISING OUT OF OR IN ANY WAY RELATING TO
THIS NOTE.

 

Section
8.             Successors and Assigns. Subject
to applicable laws, this Note and the rights and obligations evidenced hereby shall inure to the benefit of and be binding upon
the successors of Borrower and the successors and assigns of Lender.

 

Section
9.             Amendment. This Note may be
modified or amended or the provisions hereof waived only with the written consent of Lender and Borrower.

 

Section
10.           Severability. Wherever possible, each provision of
this Note shall be interpreted in such manner as to be effective and valid under applicable law, but if any provision of this
Note shall be prohibited by or invalid under applicable law, such provision shall be ineffective to the extent of such prohibition
or invalidity, without invalidating the remainder of such provisions or the remaining provisions of this Note.

 

    4

     

    

 

Section
11.           Issuance of Warrants. Borrower will issue to Lender
a three-year Class D Warrant for 1,000,000 shares of Borrower’s Common Stock.

 

[SIGNATURE
PAGE TO FOLLOW]

 

    5

     

    

 

IN
WITNESS WHEREOF, Borrower has caused this Promissory Note to be duly authorized officer and/or such individual borrower as of
the date first above indicated.

 

	 	Soluna
Holdings, Inc.

	 	 	 
	 	By:	 
	 	 	Name:  Michael Toporek
	 	 	Title: Chief Executive Officer 

 

    6

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