Exhibit
10.2


 


[     ],
2020


 


Spartan
Acquisition Corp. II


9
West 57th Street, 43rd Floor


New
York, NY 10019


 


Re: Initial
Public Offering


 


Ladies
and Gentlemen:


 


This letter (this “Letter Agreement”)
is being delivered to you in accordance with the Underwriting Agreement (the “Underwriting Agreement”)
entered into by and among Spartan Acquisition Corp. II, a Delaware corporation (the “Company”), and Citigroup
Global Markets Inc., Credit Suisse Securities (USA) LLC and Cowen and Company, LLC, as representatives (the “Representatives”)
of the several underwriters (the “Underwriters”), relating to an underwritten initial public offering
(the “Public Offering”), of [     ] of the Company’s units (including
up to [     ] units which may be purchased to cover over-allotments, if any) (the “Units”),
each comprised of one share of the Company’s Class A common stock, par value $0.0001 per share (the “Class A
Common Stock”), and one-half of one redeemable warrant (each whole warrant, a “Warrant”).
Each Warrant entitles the holder thereof to purchase one share of the Class A Common Stock at a price of $11.50 per share, subject
to adjustment. The Units shall be sold in the Public Offering pursuant to the registration statement on Form S-1 ( File No. 333-[     ])
and prospectus (the “Prospectus”) filed by the Company with the Securities and Exchange Commission (the
“Commission”) and the Company shall apply to have the Units listed on the New York Stock Exchange. Certain
capitalized terms used herein are defined in paragraph 11 hereof.


 


In
order to induce the Company and the Underwriters to enter into the Underwriting Agreement and to proceed with the Public Offering
and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Spartan Acquisition
Sponsor II LLC, a Delaware limited liability company (the “Sponsor”), and each of the undersigned individuals,
each of whom is a member of the Company’s board of directors and/or management team (each an “Insider”
and, collectively, the “Insiders”), hereby agrees with the Company as follows:


 


1.
The Sponsor and each Insider agrees that if the Company seeks stockholder approval of a proposed Business Combination, then in
connection with such proposed Business Combination, it, he or she shall vote all Founder Shares and any shares acquired by it,
him or her in the Public Offering or the secondary public market in favor of such proposed Business Combination and not redeem
any shares of Common Stock owned by it, him or her in connection with such stockholder approval. If the Company seeks to consummate
a proposed Business Combination by engaging in a tender offer, the Sponsor and each Insider agrees that it, he or she will not
sell or tender any shares of Common Stock owned by it, him or her in connection therewith.


 






     


     


    

 


2.
The Sponsor and each Insider hereby agree that in the event that the Company fails to consummate a Business Combination within
24 months from the closing of the Public Offering (or 27 months from the closing of the Public Offering if the Company has executed
a letter of intent, agreement in principle or definitive agreement for a Business Combination within 24 months from the closing
of the Public Offering), or such later period approved by the Company’s stockholders in accordance with the Company’s
amended and restated certificate of incorporation (as it may be amended from time to time, the “Charter”), the Sponsor
and each Insider shall take all reasonable steps to cause the Company to (i) cease all operations except for the purpose of winding
up, (ii) as promptly as reasonably possible but not more than 10 business days thereafter, subject to lawfully available funds
therefor, redeem 100% of the Class A Common Stock sold as part of the Units in the Public Offering (the “Offering
Shares”), at a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account,
including interest not previously released to the Company to pay its franchise and income taxes (less up to $100,000 of interest
to pay dissolution expenses), divided by the number of then outstanding Offering Shares, which redemption will completely extinguish
Public Stockholders’ rights as stockholders (including the right to receive further liquidation distributions, if any),
subject to applicable law, and (iii) as promptly as reasonably possible following such redemption, subject to the approval of
the Company’s remaining stockholders and the Company’s board of directors, dissolve and liquidate, subject in each
case to the Company’s obligations under Delaware law to provide for claims of creditors and other requirements of applicable
law. The Sponsor and the Insiders agree to not propose any amendment to the Company’s amended and restated certificate of
incorporation that would affect the substance or timing of the Company’s obligation to redeem 100% of the Offering Shares
if the Company does not complete a Business Combination within the required time period set forth in the Charter, unless the Company
provides its Public Stockholders with the opportunity to redeem their Offering Shares upon approval of any such amendment at a
per share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account including interest earned
on the funds held in the Trust Account and not previously released to the Company to pay its franchise and income taxes, divided
by the number of then outstanding Offering Shares.


 


The
Sponsor and each Insider acknowledges that it, he or she has no right, title, interest or claim of any kind in or to any monies
held in the Trust Account or any other asset of the Company as a result of any liquidation of the Company with respect to the
Founder Shares. The Sponsor and each Insider hereby further waives, with respect to any shares of the Common Stock held by it,
him or her, any redemption rights it, he or she may have in connection with the consummation of a Business Combination, including,
without limitation, any such rights available in the context of a stockholder vote to approve such Business Combination or in
the context of a tender offer made by the Company to purchase shares of the Common Stock and in connection with a stockholder
vote to amend the Company’s amended and restated certificate of incorporation in a manner that would affect the substance
or timing of the Company’s obligation to redeem 100% of the Offering Shares if the Company has not consummated a Business
Combination within 24 months from the closing of the Public Offering (or 27 months from the closing of the Public Offering if
the Company has executed a letter of intent, agreement in principle or definitive agreement for a Business Combination within
24 months from the closing of the Public Offering) (although the Sponsor, the Insiders and their respective affiliates shall be
entitled to redemption and liquidation rights with respect to any shares of the Common Stock (other than the Founder Shares) it
or they hold if the Company fails to consummate a Business Combination within 24 months from the date of the closing of the Public
Offering (or 27 months from the closing of the Public Offering if the Company has executed a letter of intent, agreement in principle
or definitive agreement for a Business Combination within 24 months from the closing of the Public Offering) or such later date
as may be specified in an amendment to the Company’s amended and restated certificate of incorporation).


 






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3.
During the period commencing on the effective date of the Underwriting Agreement and ending 180 days after such date, the undersigned
shall not, without the prior written consent of the Representatives, (i) sell, offer to sell, contract or agree to sell, hypothecate,
pledge, grant any option to purchase or otherwise dispose of or agree to dispose of, directly or indirectly, or establish or increase
a put equivalent position or liquidate or decrease a call equivalent position within the meaning of Section 16 of the Securities
Exchange Act of 1934, as amended, and the rules and regulations of the Commission promulgated thereunder, any Units, shares of
Class A Common Stock, shares of the Company’s Class B common stock, par value $0.0001 per share (the “Class
B Common Stock” and, together with the Class A Common Stock, the “Common Stock”), Warrants
or any securities convertible into, or exercisable, or exchangeable for, shares of Common Stock owned by him, her or it, (ii)
enter into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership
of any Units, shares of Common Stock, Founder Shares, Warrants or any securities convertible into, or exercisable, or exchangeable
for, shares of Class A Common Stock owned by him, her or it, whether any such transaction is to be settled by delivery of such
securities, in cash or otherwise, or (iii) publicly announce any intention to effect any transaction specified in clause (i) or
(ii). If the undersigned is an officer or director of the Company, the undersigned further agrees that the forgoing restrictions
shall be equally applicable to any issuer-directed Units that the undersigned may purchase in the Public Offering.


 


4.
In the event of the liquidation of the Trust Account, the Sponsor (which for purposes of clarification shall not extend to any
officer, member or manager of the Sponsor) agrees to indemnify and hold harmless the Company against any and all loss, liability,
claim, damage and expense whatsoever (including, but not limited to, any and all legal or other expenses reasonably incurred in
investigating, preparing or defending against any litigation, whether pending or threatened, or any claim whatsoever) to which
the Company may become subject as a result of any claim by (i) any third party (other than the Company’s independent public
accountants) for services rendered or products sold to the Company or (ii) a prospective target business with which the Company
has entered into a letter of intent, confidentiality or other similar agreement or business combination agreement (a “Target”); provided, however,
that such indemnification of the Company by the Sponsor shall apply only to the extent necessary to ensure that such claims by
a third party for services rendered (other than the Company’s independent public accountants) or products sold to the Company
or a Target do not reduce the amount of funds in the Trust Account to below the lesser of (i) $10.00 per share of the Offering
Shares and (ii) the actual amount per share of the Offering Shares held in the Trust Account due to reductions in the value of
the trust assets as of the date of the liquidation of the Trust Account, in each case including interest earned on the funds held
in the Trust Account and not previously released to the Company to pay its franchise and income taxes, less franchise and income
taxes payable, except as to any claims by a third party or Target that executed an agreement waiving claims against and all rights
to seek access to the Trust Account whether or not such agreement is enforceable. In the event that any such executed waiver is
deemed to be unenforceable against such third party, the Sponsor shall not be responsible for any liability as a result of any
such third party claims. Notwithstanding any of the foregoing, such indemnification of the Company by the Sponsor shall not apply
as to any claims under the Company’s obligation to indemnify the Underwriters against certain liabilities, including liabilities
under the Securities Act of 1933, as amended. The Sponsor shall have the right to defend against any such claim with counsel of
its choice reasonably satisfactory to the Company if, within 15 days following written receipt of notice of the claim to the Sponsor,
the Sponsor notifies the Company in writing that it shall undertake such defense. 


 






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5.
To the extent that the Underwriters do not exercise their over-allotment option to purchase an additional [     ]
Units (as described in the Prospectus), the Sponsor agrees, upon the expiration or waiver of such option, to forfeit, for cancellation
at no cost, a number of Founder Shares equal to [     ] multiplied by a fraction, (i) the numerator of
which is [     ] minus the number of Units purchased by the Underwriters upon the exercise of their over-allotment
option, and (ii) the denominator of which is [     ]. The forfeiture will be adjusted to the extent that
the over-allotment option is not exercised in full by the Underwriters so that the Founder Shares will represent 20.0% of the
Company’s issued and outstanding shares of Common Stock after the Public Offering. The Sponsor further agrees that to the
extent that (a) the size of the Public Offering is increased or decreased and (b) the Sponsor has either purchased or sold shares
of Common Stock or an adjustment to the number of Founder Shares has been effected by way of a stock split, stock dividend, reverse
stock split, contribution back to capital or otherwise, in each case in connection with such increase or decrease in the size
of the Public Offering, then (A) the references to [     ] in the numerator and denominator of the formula
in the first sentence of this paragraph shall be changed to a number equal to 15.0% of the number of the Units issued in the Public
Offering and (B) the reference to [ ] in the formula set forth in the first sentence of this paragraph shall be adjusted to such
number of Founder Shares that the Sponsor would have to collectively return to the Company in order for all holders of Founder
Shares to hold an aggregate of 20.0% of the Company’s issued and outstanding shares of Common Stock after the Public Offering.


 


6.
Each of the Sponsor and each Insider hereby agrees and acknowledges that: (i) each of the Underwriters and the Company would be
irreparably injured in the event of a breach by such Sponsor or Insider of his, her or its obligations under paragraphs 7(a) and
7(b), (ii) monetary damages may not be an adequate remedy for such breach and (iii) the non-breaching party shall be entitled
to injunctive relief, in addition to any other remedy that such party may have in law or in equity, in the event of such breach.


 


7.
(a) Subject to the exceptions set forth herein, the Sponsor and each Insider agrees that it, he or she shall not Transfer any
Founder Shares held by it, him or her until one year after the date of the consummation of a Business Combination or earlier if,
subsequent to a Business Combination, (i) the last sale price of the Class A Common Stock equals or exceeds $12.00 per share (as
adjusted for stock splits, stock dividends, reorganizations, recapitalizations and the like) for any 20 trading days within any
30-trading day period commencing at least 150 days after the consummation of a Business Combination or (ii) the Company consummates
a subsequent liquidation, merger, stock exchange or other similar transaction which results in all of the Company’s stockholders
having the right to exchange their shares of Common Stock for cash, securities or other property (the “Lock-up”).


 






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(b)
Subject to the exceptions set forth herein, the Sponsor and each Insider agrees that it, he or she shall not Transfer any Private
Placement Warrants or Class A Common Stock underlying such warrants held by it, him or her, until 30 days after the completion
of a Business Combination. 


 


(c)
Notwithstanding the provisions set forth in paragraphs 7(a) and (b), Transfers of the Founder Shares, Private Placement Warrants
and shares of Class A Common Stock underlying the Private Placement Warrants are permitted (a) to the Company’s officers
or directors, any affiliates or family members of any of the Company’s officers or directors, any members of the Sponsor
or their affiliates, or any affiliates of the Sponsor (b) in the case of an individual, by gift to members of the individual’s
immediate family or to a trust, the beneficiary of which is a member of one of the individual’s immediate family, an affiliate
of such person or to a charitable organization; (c) in the case of an individual, by virtue of laws of descent and distribution
upon death of the individual; (d) in the case of an individual, pursuant to a qualified domestic relations order; (e) by virtue
of the laws of the state of Delaware or the Sponsor’s operating agreement upon dissolution of the Sponsor; (f) by private
sales or transfers made in connection with the consummation of a Business Combination at prices no greater than the price at which
the shares were originally purchased; (g) in the event of the Company’s liquidation prior to the completion of a Business
Combination; or (h) in the event of completion of a liquidation, merger, stock exchange or other similar transaction which results
in all of the Company’s stockholders having the right to exchange their shares of Common Stock for cash, securities or other
property subsequent to the completion of a Business Combination; provided, however, that in the case of
clauses (a) through (f), these permitted transferees must enter into a written agreement agreeing to be bound by these transfer
restrictions and the other restrictions contained in this Agreement (including provisions relating to voting, the Trust Account
and liquidating distributions).


 


8.
Each Insider’s biographical information furnished to the Company that is included in the Prospectus is true and accurate
in all respects and does not omit any material information with respect to such Insider’s background. Each Insider’s
questionnaire furnished to the Company is true and accurate in all respects. Each Insider represents and warrants that: such Insider
is not subject to or a respondent in any legal action for, any injunction, cease-and-desist order or order or stipulation to desist
or refrain from any act or practice relating to the offering of securities in any jurisdiction; such Insider has never been convicted
of, or pleaded guilty to, any crime (i) involving fraud, (ii) relating to any financial transaction or handling of funds of another
person, or (iii) pertaining to any dealings in any securities and such Insider is not currently a defendant in any such criminal
proceeding; and neither such Insider nor the Sponsor has ever been suspended or expelled from membership in any securities or
commodities exchange or association or had a securities or commodities license or registration denied, suspended or revoked.


 






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9.
Except as disclosed in the Prospectus, neither the Sponsor nor any officer, nor any affiliate of the Sponsor, or any officer,
nor any director or officer of the Company, shall receive from the Company any finder’s fee, reimbursement, consulting fee,
non-cash payments, monies in respect of any repayment of a loan or other compensation prior to, or in connection with any services
rendered in order to effectuate, the consummation of the Company’s initial Business Combination (regardless of the type
of transaction that it is), other than the following payments, none of which will be made from the proceeds held in the Trust
Account prior to the completion of the initial Business Combination: repayment of a loan of up to $300,000 made to the Company
by the Sponsor, pursuant to a Promissory Note dated August 17, 2020; payment of an aggregate of $10,000 per month, to the Sponsor,
for office space, utilities, secretarial support and administrative services, pursuant to an Administrative Services Agreement,
dated [     ], 2020; reimbursement for any out-of-pocket expenses related to identifying, investigating,
negotiating and consummating an initial Business Combination; and repayment of loans, if any, and on such terms as to be determined
by the Company from time to time, made by the Sponsor or an affiliate of the Sponsor or certain of the Company’s officers
and directors to finance transaction costs in connection with an intended initial Business Combination, provided, that, if the
Company does not consummate an initial Business Combination, a portion of the working capital held outside the Trust Account may
be used by the Company to repay such loaned amounts so long as no proceeds from the Trust Account are used for such repayment.
Up to $1,500,000 of such loans may be convertible into warrants at a price of $1.00 per warrant at the option of the lender. Such
warrants would be identical to the Private Placement Warrants, including as to exercise price, exercisability and exercise period.


 


10.
The Sponsor and each Insider has full right and power, without violating any agreement to which it is bound (including, without
limitation, any non-competition or non-solicitation agreement with any employer or former employer), to enter into this Letter
Agreement and, as applicable, to serve as an officer and/or director on the board of directors of the Company and each Insider
hereby consents to being named in the Prospectus as an officer and/or director of the Company, as applicable. 


 


11.
As used herein, (i) “Business Combination” shall mean a merger, capital stock exchange, asset acquisition,
stock purchase, reorganization or similar business combination, involving the Company and one or more businesses; (ii) “Founder
Shares” shall mean the shares of the Class B Common Stock held by the Sponsor, the Company’s independent directors
and any other holder prior to the consummation of the Public Offering; (iii) “Private Placement Warrants ”
shall mean the warrants to purchase [     ] shares of Class A Common Stock (or [     ]
shares of Class A Common Stock if the Underwriters’ over-allotment option in connection with the Public Offering is exercised
in full), that the Sponsor has agreed to purchase for an aggregate purchase price of approximately $[     ]
(or approximately $[     ] if the Underwriters’ over-allotment option in connection with the Public
Offering is exercised in full), or $1.00 per warrant, in a private placement that shall occur simultaneously with the consummation
of the Public Offering; (iv) “Public Stockholders” shall mean the holders of shares of Class A Common
Stock issued in the Public Offering; (v) “Trust Account” shall mean the trust fund into which a portion
of the net proceeds of the Public Offering and the sale of the Private Placement Warrants to the Sponsor shall be deposited; and
(vi) “Transfer” shall mean the (a) sale of, offer to sell, contract or agreement to sell, hypothecate,
pledge, grant of any option to purchase or otherwise dispose of or agreement to dispose of, directly or indirectly, or establishment
or increase of a put equivalent position or liquidation with respect to or decrease of a call equivalent position within the meaning
of Section 16 of the Exchange Act, and the rules and regulations of the Commission promulgated thereunder with respect to, any
security, (b) entry into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences
of ownership of any security, whether any such transaction is to be settled by delivery of such securities, in cash or otherwise,
or (c) public announcement of any intention to effect any transaction specified in clause (a) or (b).


 


12.
This Letter Agreement constitutes the entire agreement and understanding of the parties hereto in respect of the subject matter
hereof and supersedes all prior understandings, agreements, or representations by or among the parties hereto, written or oral,
to the extent they relate in any way to the subject matter hereof or the transactions contemplated hereby. This Letter Agreement
may not be changed, amended, modified or waived (other than to correct a typographical error) as to any particular provision,
except by a written instrument executed by all parties hereto.


 






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13.
No party hereto may assign either this Letter Agreement or any of its rights, interests, or obligations hereunder without the
prior written consent of the other parties. Any purported assignment in violation of this paragraph shall be void and ineffectual
and shall not operate to transfer or assign any interest or title to the purported assignee. This Letter Agreement shall be binding
on the Sponsor, each Insider and each of their respective successors, heirs and assigns.


 


14.
Nothing in this Letter Agreement shall be construed to confer upon, or give to, any person or entity other than the parties hereto
any right, remedy or claim under or by reason of this Letter Agreement or of any covenant, condition, stipulation, promise or
agreement hereof. All covenants, conditions, stipulations, promises and agreements contained in this Letter Agreement shall be
for the sole and exclusive benefit of the parties hereto and their successors, heirs, personal representatives and assigns and
permitted transferees.


 


15.
This Letter Agreement may be executed in any number of original or facsimile counterparts and each of such counterparts shall
for all purposes be deemed to be an original, and all such counterparts shall together constitute but one and the same instrument.


 


16.
This Letter Agreement shall be deemed severable, and the invalidity or unenforceability of any term or provision hereof shall
not affect the validity or enforceability of this Letter Agreement or of any other term or provision hereof. Furthermore, in lieu
of any such invalid or unenforceable term or provision, the parties hereto intend that there shall be added as a part of this
Letter Agreement a provision as similar in terms to such invalid or unenforceable provision as may be possible and be valid and
enforceable.


 


17.
This Letter Agreement shall be governed by and construed and enforced in accordance with the laws of the State of New York, without
giving effect to conflicts of law principles that would result in the application of the substantive laws of another jurisdiction.
The parties hereto (i) all agree that any action, proceeding, claim or dispute arising out of, or relating in any way to, this
Letter Agreement shall be brought and enforced in the courts of New York City, in the State of New York, and irrevocably submit
to such jurisdiction and venue, which jurisdiction and venue shall be exclusive and (ii) waive any objection to such exclusive
jurisdiction and venue or that such courts represent an inconvenient forum.


 


18.
Any notice, consent or request to be given in connection with any of the terms or provisions of this Letter Agreement shall be
in writing and shall be sent by express mail or similar private courier service, by certified mail (return receipt requested),
by hand delivery or facsimile transmission.


 


19.
This Letter Agreement shall terminate on the earlier of (i) the expiration of the Lock-up or (ii) the liquidation of the Company; provided, however,
that this Letter Agreement shall earlier terminate in the event that the Public Offering is not consummated and closed by [     ],
2020, provided further that paragraph 4 of this Letter Agreement shall survive such liquidation.


 


[Signature
page follows]


 






    7


     


    

 


Sincerely,


 


	 	SPARTAN ACQUISITION SPONSOR II
    LLC
	 	 	 
	 	By:	 
	 	Name: 	Geoffrey Strong
	 	Title:	Chief Executive Officer
	 	 	 
	 	 	 
	 	 	Geoffrey Strong
	 	 	 
	 	 	 
	 	 	James Crossen
	 	 	 
	 	 	 
	 	 	Wilson Handler
	 	 	 
	 	 	 
	 	 	Christina Hommes
	 	 	 
	 	 	 
	 	 	John MacWilliams
	 	 	 
	 	 	 
	 	 	Jan Wilson
	 	 	 
	 	 	 
	 	 	John M. Stice
	 	 	 
	 	 	 
	 	 	Olivia Wassenaar
	 	 	 
	 	 	 
	 	 	Joseph Romeo


 


[Signature
Page to Letter Agreement]


 






     


     


    

 


	Acknowledged and Agreed:	 
	 	 
	SPARTAN ACQUISITION CORP. II	 
	 	 	 
	By:	 	 
	Name: 	Geoffrey Strong	 
	Title:	Chief Executive Officer	 


 


[Signature
Page to Letter Agreement]