EX-10.2





 Exhibit 10.2 

[●], 2021 
 Mason Industrial Technology,
Inc. 
 110 E. 59th Street 
 New York, NY 

10022 
 Re: Initial Public Offering 

Gentlemen: 
 This letter (this “Letter
Agreement”) is being delivered to you in accordance with the Underwriting Agreement (the “Underwriting Agreement”) to be entered into by and among Mason Industrial Technology, Inc., a Delaware corporation (the
“Company”), Citigroup Global Markets Inc. and Jefferies LLC as representatives (the “Representatives”) of the several underwriters (each, an “Underwriter” and collectively, the
“Underwriters”), relating to an underwritten initial public offering (the “Public Offering”), of 40,000,000 of the Company’s units (including up to 6,000,000 units that 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 “Common Stock”), and
one-third of one warrant. Each whole Warrant (each, a “Warrant”) entitles the holder thereof to purchase one share of Common Stock at a price of $11.50 per share, subject to adjustment.
The Units shall be sold in the Public Offering pursuant to a registration statement on Form S-1 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, Mason Industrial Sponsor, LLC (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 (i) vote any shares of Capital Stock owned by it, him or her in favor of any proposed Business Combination and (ii) not redeem any shares of Common Stock owned by it, him or her in
connection with such stockholder approval. 
 2. The Sponsor and each Insider hereby agrees that in the event that the Company fails to consummate a
Business Combination within 24 months (or 30 months if the Company has executed a letter of intent, agreement in principle or definitive agreement for a Business Combination within such 24 months period) 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, 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 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 (less up to
$100,000 of interest to pay dissolution expenses), including interest earned on the funds held in the Trust Account and not previously released to the Company to pay the Company’s taxes, divided by the number of then outstanding Offering
Shares, which redemption will completely extinguish all Public Stockholders’ rights as stockholders (including the right to receive further liquidating 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 each Insider agree to not propose any amendment to the Company’s amended and restated certificate of incorporation that would modify 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 24 months (or 30 months, if applicable)
from the closing of the Public Offering, 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 (less up to $100,000 of interest to pay dissolution expenses), including interest earned on the funds held in the Trust Account and not previously released to the
Company to pay the Company’s 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 held by it, him or her. The
Sponsor and each Insider hereby further waive, with respect to any shares of Common Stock held by it, him or her, if any, 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 Common Stock (although the Sponsor, the Insiders and their
respective affiliates shall be entitled to redemption and liquidation rights with respect to any Offering Shares it or they hold if the Company fails to consummate a Business Combination within 24 months (or 30 months, if applicable) from the date
of the closing of the Public Offering). 
 3. During the period commencing on the effective date of the Underwriting Agreement and ending 180 days after
such date, the Sponsor and each Insider 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, with respect to any Units, shares of Capital Stock, Warrants or any securities convertible into, or exercisable, or exchangeable for, shares of Common Stock owned by it, him or her,
(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 Capital Stock, Warrants or any securities convertible into, or exercisable, or
exchangeable for, shares of Common Stock owned by it, him or her, 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). Each of the Insiders and the Sponsor acknowledges and agrees that, prior to the effective date of any release or waiver of the restrictions set forth in this paragraph 3 or paragraph 7 below with respect to Insiders other
than the Sponsor, the Company shall announce the impending release or waiver by press release through a major news service at least two business days before the effective date of the release or waiver. Any such release or waiver granted shall only
be effective two business days after the publication date of such press release. The provisions of this paragraph will not apply if (i) the release or waiver is effected solely to permit a transfer of securities without consideration and
(ii) the transferee has agreed in writing to be bound by the same terms described in this Letter Agreement to the extent and for the duration that such terms remain in effect at the time of the transfer. 

4. In the event of the liquidation of the Trust Account, the Sponsor (which for purposes of clarification shall not extend to any other shareholders, members
or managers 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 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 for a Business
Combination (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 (i) $10.00 per share of the Offering Shares or (ii) such lesser 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, net of the amount of interest earned on the property in the Trust
Account which may be withdrawn to pay taxes, except as to any claims by a third party (including a Target) who executed a waiver of any and all rights to seek access to the Trust Account and except as to any claims under the Company’s indemnity
of the 












 
Underwriters against certain liabilities, including liabilities under the Securities Act of 1933, as amended. In the event that any such executed waiver is deemed to be unenforceable against such
third party, the Sponsor shall not be responsible to the extent of any liability for such third party claims. 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. For the avoidance of doubt, none of the Company’s officers or directors will
indemnify the Company for claims by third parties, including, without limitation, claims by vendors and prospective target businesses. 
 5. To the extent
that the Underwriters do not exercise their over-allotment option to purchase up to an additional 6,000,000 Units within 45 days from the date of the Prospectus (and as further described in the Prospectus), the Sponsor agrees to forfeit, at no cost,
a number of Founder Shares in the aggregate equal to the product of 1,500,000 multiplied by a fraction, (i) the numerator of which is 6,000,000 minus the number of Units purchased by the Underwriters upon the exercise of their over-allotment
option, and (ii) the denominator of which is 6,000,000. The forfeiture will be adjusted to the extent that the over-allotment option is not exercised in full by the Underwriters so that the Initial Stockholders will own an aggregate of 20.0% of
the Company’s issued and outstanding shares of Capital Stock after the Public Offering. To the extent that the size of the Public Offering is increased or decreased, the Company will effect a capitalization or share repurchase, redemption or
stock split or other appropriate mechanism, as applicable, immediately prior to the consummation of the Public Offering in such amount as to maintain the ownership of the Capital Stock of the Initial Stockholders prior to the Public Offering at
20.0% of the Company’s issued and outstanding Capital Stock upon the consummation of the Public Offering. In connection with such increase or decrease in the size of the Public Offering, (A) references to 6,000,000 in the numerator and
denominator of the formula in the first sentence of this paragraph shall be changed to a number equal to 15% of the number of shares included in the Units issued in the Public Offering and (B) the reference to 1,500,000 in the formula set forth
in the immediately preceding sentence shall be adjusted to such number of Founder Shares that the Sponsor would have to return to the Company in order to hold (with all of the Initial Stockholders) an aggregate of 20.0% of the Company’s issued
and outstanding Capital Stock after the Public Offering. 
 6. (a) Each Insider hereby agrees not to participate in the formation of, or become an officer
or director of, any other blank check company unless the Company has failed to complete a Business Combination within 24 months (or 30 months, as applicable) after the closing of the Public Offering. Such restriction does not preclude any position
as an officer or director of another blank check company held on the date hereof. For the avoidance of doubt, each Insider is allowed to participate in the formation of, or become an officer or director of, another blank check company upon the
Company entering into a definitive agreement with respect to a Business Combination. 
 (b) The Sponsor and each Insider hereby agrees and acknowledges
that: (i) the Underwriters and the Company would be irreparably injured in the event of a breach by such Sponsor or an Insider of its, his or her obligations under paragraphs 1, 2, 3, 4, 5, 6(a), 7(a), 7(b), and 9 of this Letter Agreement
(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) The Sponsor and each Insider agree that it or he shall not Transfer any Founder Shares (or
shares of Common Stock issuable upon conversion thereof) until the earlier of (A) one year after the completion of the Company’s initial Business Combination or (B) subsequent to the Business Combination, (x) if the last sale
price of the 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 Company’s initial Business Combination or (y) the date on which the Company completes a liquidation, merger, capital stock exchange, reorganization or other similar transaction that 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 “Founder Shares Lock-up Period”). 

(b) The Sponsor and each Insider agree that it, he or she shall not Transfer any Private Placement Warrants (or shares of Common Stock issued or issuable upon
the exercise of the Private Placement Warrants) until 30 days after the completion of a Business Combination (the “Private Placement Warrants Lock-up Period”, together with the Founder
Shares Lock-up Period, the “Lock-up Periods”). 












 (c) Notwithstanding the provisions set forth in paragraphs 3 and 7(a) and (b), Transfers of the Founder
Shares, Private Placement Warrants and shares of Common Stock issued or issuable upon the exercise or conversion of the Private Placement Warrants or the Founder Shares and that are held by the Sponsor, any Insider or any of their permitted
transferees (that have complied with this paragraph 7(c)), 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 any
affiliates of the Sponsor; (b) in the case of an individual, transfers by gift to a member of the individual’s immediate family, to a trust, the beneficiary of which is a member of the individual’s immediate family or an affiliate of
such person, or to a charitable organization; (c) in the case of an individual, transfers by virtue of laws of descent and distribution upon death of the individual; (d) in the case of an individual, transfers pursuant to a qualified
domestic relations order; (e) transfers 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 securities were originally purchased; (f) transfers
in the event of the Company’s liquidation prior to the completion of an initial Business Combination; (g) transfers by virtue of the laws of the State of Delaware or the Sponsor’s limited liability company agreement upon dissolution
of the Sponsor; (h) to the Purchaser or any Transferee (each, as defined in the Forward Purchase Agreement, a “Forward Purchase Party”); (i) as a distribution to limited partners, members or stockholders of a Forward
Purchase Party; (j) to a Forward Purchase Party’s affiliates, to any investment fund or other entity controlled or managed by a Forward Purchase Party or any of its affiliates, or to any investment manager or investment advisor of a
Forward Purchase Party or an affiliate of any such investment manager or investment advisor; (k) to a nominee or custodian of a person or entity to whom a disposition or transfer would be permissible under clauses (a) through (i) above;
(l) by virtue of the laws of a Forward Purchase Party’s jurisdiction of formation or its organizational documents upon dissolution of a Forward Purchase Party; provided, however, that in the case of clauses (a) through (e) and
(h) through (k), these permitted transferees must enter into a written agreement agreeing to be bound by the restrictions herein. 
 8. The Sponsor and
each Insider represent and warrant that it, he or she has never 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. Each Insider’s biographical information furnished to the Company (including any such information included in the Prospectus) is true and accurate in all respects and does not omit any material information with respect to the
Insider’s background. The Sponsor and each Insider’s questionnaire furnished to the Company is true and accurate in all respects. The Sponsor and each Insider represents and warrants that: it, he or she 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; it, he or she 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 it, he or she is not currently a defendant in any such criminal proceeding. 
 9. Except as disclosed in the Prospectus,
neither the Sponsor nor any Insider nor any affiliate of the Sponsor or any Insider, nor any director or officer of the Company, shall receive from the Company any finder’s fee, reimbursement, consulting fee, 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, 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 and advances up to an aggregate of $300,000 made to the Company by the Sponsor; 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 any of the Company’s officers or 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 $1.50 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 have 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 a director on the board of directors of the Company and hereby consents to being named in the Prospectus as an officer and/or a director of the Company. 












 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) “Capital Stock” shall mean, collectively, the Common Stock and the Founder
Shares; (iii) “Founder Shares” shall mean the 11,500,000 shares of the Company’s Class B common stock, par value $0.0001 per share, (or 10,000,000 shares if the over-allotment option is not exercised by the
Underwriters) initially held by the Sponsor; (iv) “Initial Stockholders” shall mean the Sponsor and any other holder of Founder Shares immediately prior to the Public Offering; (v) “Private Placement
Warrants” shall mean the warrants to purchase up to 6,666,667 shares of Common Stock of the Company (or 7,466,667 shares of Common Stock if the over-allotment option is exercised in full) that the Sponsor has agreed to purchase for an
aggregate purchase price of $10,000,000 in the aggregate (or $11,200,000 if the over-allotment option is exercised in full), or $1.50 per warrant, in a private placement that shall occur simultaneously with the consummation of the Public Offering;
(vi) “Public Stockholders” shall mean the holders of securities issued in the Public Offering; (vii) “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 shall be deposited; (viii) “Forward Purchase Agreement” shall mean that certain Forward Purchase Agreement, dated as of [●], 2021, by and between the Company and
Mason Management LLC; and (ix) “Transfer” shall mean the (a) sale or assignment 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 Securities Exchange Act of 1934,
as amended, 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. 

13. Except as otherwise provided herein, 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 and each Insider and their respective successors, heirs and assigns and permitted transferees. 
 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 Periods 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 [●],
2021; provided further that paragraph 4 of this Letter Agreement shall survive such liquidation for a period of six years. 
 [Signature
Page Follows] 












 
			
	Sincerely,
	
	MASON INDUSTRIAL SPONSOR, LLC
	
	By: Mason Management LLC, as managing member
		
	By:	 	      

	Name:	 	Michael E. Martino
	Title:	 	Member
		
	By:	 	      

	Name:	 	Michael E. Martino
		
	By:	 	      

	Name:	 	Philip B. Whitehead
		
	By:	 	      

	Name:	 	Edward A. Rose III
		
	By:	 	      

	Name:	 	Derek Satzinger
		
	By:	 	      

	Name:	 	Diane M. Parisi
		
	By:	 	      

	Name:	 	James L. Bauman
		
	By:	 	      

	Name:	 	William B. Plummer
		
	By:	 	      

	Name:	 	Marshall Clement Sanford, Jr.
		
	By:	 	      

	Name:	 	Pamela Chepiga


  

			
	Acknowledge and Agreed:
	
	MASON INDUSTRIAL TECHNOLOGY, INC.
		
	By:	 	      

	Name:	 	Derek Satzinger
	Title:	 	Chief Financial Officer

 [Signature Page to Letter Agreement]