Document:

FORM OF INVESTMENT MANAGEMENT TRUST AGREEMENT

 Exhibit 10.3 

INVESTMENT MANAGEMENT TRUST AGREEMENT 

This Investment Management Trust Agreement (this “Agreement”) is made effective as of [•], 2021 by and between
Fortress Capital Acquisition Corp., a Cayman Islands exempted company (the “Company”), and Continental Stock Transfer & Trust Company, a New York corporation (the “Trustee”). 

WHEREAS, the Company’s registration statement on Form S-1,
No. 333-251651 (the “Registration Statement”), and prospectus (the “Prospectus”) for the initial public offering of the Company’s units (the
“Units”), each of which consists of one share of the Company’s Class A ordinary shares, par value $0.0001 per share (the “Ordinary Shares”), and
one-fifth of one redeemable warrant, each whole warrant entitling the holder thereof to purchase one Ordinary Share (such initial public offering hereinafter referred to as the
“Offering”), has been declared effective as of the date hereof by the U.S. Securities and Exchange Commission; and 

WHEREAS, the Company has entered into an Underwriting Agreement (the “Underwriting Agreement”) with Citigroup Global
Markets Inc. and Goldman Sachs & Co. LLC, as representatives (the “Representatives”) of the several underwriters (the “Underwriters”) named therein; and 

WHEREAS, as described in the Prospectus, $300,000,000 of the gross proceeds of the Offering and sale of the Private Placement Warrants (as
defined in the Underwriting Agreement) (or $345,000,000 if the Underwriters’ over-allotment option is exercised in full) will be delivered to the Trustee to be deposited and held in a segregated trust account located at all times in the United
States (the “Trust Account”) for the benefit of the Company and the holders of Ordinary Shares included in the Units issued in the Offering as hereinafter provided (the amount to be delivered to the Trustee (and any interest
subsequently earned thereon) is referred to herein as the “Property,” the shareholders for whose benefit the Trustee shall hold the Property will be referred to as the “Public
Shareholders,” and the Public Shareholders and the Company will be referred to together as the “Beneficiaries”); and 

WHEREAS, pursuant to the Underwriting Agreement, a portion of the Property equal to $10,500,000, or $12,075,000 if the Underwriters’
over-allotment option is exercised in full, is attributable to deferred underwriting discounts and commissions that may be payable by the Company to the Underwriters upon the consummation of the Business Combination (as defined below) (the
“Deferred Discount”); and 
 WHEREAS, the Company and the Trustee desire to enter into this Agreement to set forth
the terms and conditions pursuant to which the Trustee shall hold the Property. 
 NOW THEREFORE, IT IS AGREED: 

1. Agreements and Covenants of Trustee. The Trustee hereby agrees and covenants to: 

(a) Hold the Property in trust for the Beneficiaries in accordance with the terms of this Agreement in the Trust Account established by the
Trustee at a branch office of J.P. Morgan Chase Bank, N.A. located in the United States and at a brokerage institution selected by the Trustee that is reasonably satisfactory to the Company; 

 (b) Manage, supervise and administer the Trust Account subject to the terms and conditions
set forth herein; 
 (c) In a timely manner, upon the written instruction of the Company, invest and reinvest the Property in United States
government securities within the meaning of Section 2(a)(16) of the Investment Company Act of 1940, as amended, having a maturity of 185 days or less, or in money market funds meeting the conditions of paragraphs (d)(1), (d)(2), (d)(3) and
(d)(4) of Rule 2a-7 promulgated under the Investment Company Act of 1940, as amended (or any successor rule), which invest only in direct U.S. government treasury obligations, as determined by the Company; the
Trustee may not invest in any other securities or assets, it being understood that the Trust Account will earn no interest while account funds are uninvested awaiting the Company’s instructions hereunder and the Trustee may earn bank credits or
other consideration during such periods; 
 (d) Collect and receive, when due, all principal, interest or other income arising from the
Property, which shall become part of the “Property,” as such term is used herein; 
 (e) Promptly notify the
Company and the Representatives of all communications received by the Trustee with respect to any Property requiring action by the Company; 

(f) Supply any necessary information or documents as may be requested by the Company (or its authorized agents) in connection with the
Company’s preparation of the tax returns relating to assets held in the Trust Account or in connection with the preparation or completion of the audit of the Company’s financial statements by the Company’s auditors; 

(g) Participate in any plan or proceeding for protecting or enforcing any right or interest arising from the Property if, as and when
instructed by the Company to do so; 
 (h) Render to the Company monthly written statements of the activities of, and amounts in, the Trust
Account reflecting all receipts and disbursements of the Trust Account; 
 (i) Commence liquidation of the Trust Account only after and
promptly after (x) receipt of, and only in accordance with, the terms of a letter from the Company (“Termination Letter”) in a form substantially similar to that attached hereto as either Exhibit A or Exhibit
B, as applicable, signed on behalf of the Company by its Chief Executive Officer, President, Chief Financial Officer, Secretary or Chairman of the Board of Directors of the Company (the “Board”) or other authorized
officer of the Company, and complete the liquidation of the Trust Account and distribute the Property 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 taxes
(less up to $100,000 of interest that may be released to the Company to pay dissolution expenses), only as directed in the Termination Letter and the other documents referred to therein; or (y) the date which is 24 months after the closing of
the Offering, if a 

 
Termination Letter has not been received by the Trustee prior to such date, in which case the Trust Account shall be liquidated in accordance with the procedures set forth in the Termination
Letter attached as Exhibit B and the Property 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 taxes (less up to $100,000 of interest that may be
released to the Company to pay dissolution expenses) shall be distributed to the Public Shareholders of record as of such date; provided, however, that in the event the Trustee receives a Termination Letter in a form substantially
similar to Exhibit B hereto, or if the Trustee begins to liquidate the Property because it has received no such Termination Letter by the date which is 24 months from the closing of the Offering, the Trustee shall keep the Trust Account open
until twelve (12) months following the date the Property has been distributed to the Public Shareholders; 
 (j) Upon written request
from the Company, which may be given from time to time in a form substantially similar to that attached hereto as Exhibit C (a “Tax Payment Withdrawal Instruction”), withdraw from the Trust Account and distribute to
the Company the amount of interest earned on the Property requested by the Company to cover any tax obligation owed by the Company as a result of assets of the Company or interest or other income earned on the Property, which amount shall be
delivered directly to the Company by electronic funds transfer or other method of prompt payment, and the Company shall forward such payment to the relevant taxing authority; provided, however, that to the extent there is not
sufficient cash in the Trust Account to pay such tax obligation, the Trustee shall liquidate such assets held in the Trust Account as shall be designated by the Company in writing to make such distribution, so long as there is no reduction in the
principal amount initially deposited in the Trust Account; provided, further, that if the tax to be paid is a franchise tax, the written request by the Company to make such distribution shall be accompanied by a copy of the franchise
tax bill for the Company and a written statement from the principal financial officer of the Company setting forth the actual amount payable (it being acknowledged and agreed that any such amount in excess of interest income earned on the Property
shall not be payable from the Trust Account). The written request of the Company referenced above shall constitute presumptive evidence that the Company is entitled to said funds, and the Trustee shall have no responsibility to look beyond said
request; 
 (k) Upon written request from the Company, which may be given from time to time in a form substantially similar to that attached
hereto as Exhibit D (a “Shareholder Redemption Withdrawal Instruction”), the Trustee shall distribute on behalf of the Company the amount requested by the Company to be used to redeem Ordinary Shares from Public
Shareholders properly submitted in connection with a shareholder vote to approve an amendment to the Company’s amended and restated memorandum and articles of association (A) that would modify the substance or timing of the Company’s
obligation to allow redemption in connection with the Company’s initial Business Combination or to redeem 100% of the Company’s public Ordinary Shares if the Company has not consummated an initial Business Combination within such time as
is described in the Company’s amended and restated memorandum and articles of association or (B) with respect to any other provision relating to shareholders’ rights or pre-initial Business
Combination activity. The written request of the Company referenced above shall constitute presumptive evidence that the Company is entitled to distribute said funds, and the Trustee shall have no responsibility to look beyond said request; and 

 (l) Not make any withdrawals or distributions from the Trust Account other than pursuant to
Sections 1(i), 1(j) or 1(k) above. 
 2. Agreements and Covenants of the Company. The Company hereby agrees and
covenants to: 
 (a) Give all instructions to the Trustee hereunder in writing, signed by the Company’s Chairman of the Board,
President, Chief Executive Officer, Chief Financial Officer, Secretary or other authorized officer of the Company. In addition, except with respect to its duties under Sections 1(i), 1(j) and 1(k) hereof, the Trustee shall be
entitled to rely on, and shall be protected in relying on, any verbal or telephonic advice or instruction which it, in good faith and with reasonable care, believes to be given by any one of the persons authorized above to give written instructions,
provided that the Company shall promptly confirm such instructions in writing; 
 (b) Subject to Section 4 hereof,
hold the Trustee harmless and indemnify the Trustee from and against any and all documented expenses, including reasonable outside counsel fees and disbursements, or losses suffered by the Trustee in connection with any action taken by it hereunder
and in connection with any action, suit or other proceeding brought against the Trustee involving any claim, or in connection with any claim or demand, which in any way arises out of or relates to this Agreement, the services of the Trustee
hereunder, or the Property or any interest earned on the Property, except for expenses and losses resulting from the Trustee’s gross negligence, fraud or willful misconduct. Promptly after the receipt by the Trustee of notice of demand or claim
or the commencement of any action, suit or proceeding, pursuant to which the Trustee intends to seek indemnification under this Section 2(b), it shall notify the Company in writing of such claim (hereinafter referred to as
the “Indemnified Claim”). The Trustee shall have the right to conduct and manage the defense against such Indemnified Claim; provided that the Trustee shall obtain the consent of the Company with respect to the
selection of counsel, which consent shall not be unreasonably withheld. The Trustee may not agree to settle any Indemnified Claim without the prior written consent of the Company, which such consent shall not be unreasonably withheld. The Company
may participate in such action with its own counsel; 
 (c) Pay the Trustee the fees set forth on Schedule A hereto, including an
initial acceptance fee, annual administration fee, and transaction processing fee which fees shall be subject to modification by the parties from time to time. It is expressly understood that the Property shall not be used to pay such fees unless
and until it is distributed to, or on behalf of, the Company pursuant to Sections 1(i) through 1(k) hereof. The Company shall pay the Trustee the initial acceptance fee and the first annual administration fee at the consummation of the
Offering. The Trustee shall refund to the Company the annual administration fee (on a pro rata basis) with respect to any period after the liquidation of the Trust Account. The Company shall not be responsible for any other fees or charges of the
Trustee except as set forth in this Section 2(c) and as may be provided in Section 2(b) hereof; 

(d) In connection with any vote of the Company’s shareholders regarding a merger, share exchange, asset acquisition, share purchase,
reorganization or similar business combination involving the Company and one or more businesses (the “Business Combination”), provide to the Trustee an affidavit or certificate of the inspector of elections for the
shareholder meeting verifying the vote of such shareholders regarding such Business Combination; 

 (e) Provide the Representatives with a copy of any Termination Letter(s) and/or any other
correspondence that is sent to the Trustee with respect to any proposed withdrawal from the Trust Account promptly after it issues the same; 

(f) Instruct the Trustee to make only those distributions that are permitted under this Agreement, and refrain from instructing the Trustee to
make any distributions that are not permitted under this Agreement; 
 (g) Within four (4) business days after the Underwriters
exercise the over-allotment option (or any unexercised portion thereof) or such over-allotment option expires, provide the Trustee with a notice in writing of the total amount of the Deferred Discount; and 

(h) Expressly provide in any Instruction Letter (as defined in Exhibit A) delivered in connection with a Termination Letter in the Form
of Exhibit A that the Deferred Discount be paid directly to the account or accounts directed by the applicable Underwriters. 
 3.
Limitations of Liability. The Trustee shall have no responsibility or liability to: 
 (a) Imply obligations, perform duties, inquire
or otherwise be subject to the provisions of any agreement or document other than this Agreement and that which is expressly set forth herein; 

(b) Take any action with respect to the Property, other than as directed in Section 1 hereof, and the Trustee shall
have no liability to any party under this Agreement except for liability arising out of the Trustee’s gross negligence, fraud or willful misconduct; 

(c) Institute any proceeding for the collection of any principal and income arising from, or institute, appear in or defend any proceeding of
any kind with respect to, any of the Property unless and until it shall have received instructions from the Company given as provided herein to do so and the Company shall have advanced or guaranteed to it funds sufficient to pay any expenses
incident thereto; 
 (d) Refund any depreciation in principal of any Property; 

(e) Assume that the authority of any person designated by the Company to give instructions hereunder shall not be continuing unless provided
otherwise in such designation, or unless the Company shall have delivered a written revocation of such authority to the Trustee; 
 (f) The
Company or to anyone else for any action taken or omitted by it, or any action suffered by it to be taken or omitted, in good faith and in the Trustee’s best judgment, except for the Trustee’s gross negligence, fraud or willful misconduct.
The Trustee may rely conclusively and shall be protected in acting upon any order, notice, demand, certificate, opinion or advice of counsel (including counsel chosen by the Trustee, which counsel may be the Company’s counsel), statement,
instrument, report or other paper or document (not only as to its 

 
due execution and the validity and effectiveness of its provisions, but also as to the truth and acceptability of any information therein contained) which the Trustee believes, in good faith and
with reasonable care, to be genuine and to be signed or presented by the proper person or persons. The Trustee shall not be bound by any notice or demand, or any waiver, modification, termination or rescission of this Agreement or any of the terms
hereof, unless evidenced by a written instrument delivered to the Trustee, signed by the proper party or parties and, if the duties or rights of the Trustee are affected, unless it shall give its prior written consent thereto; 

(g) Verify the accuracy of the information contained in the Registration Statement; 

(h) Provide any assurance that any Business Combination entered into by the Company or any other action taken by the Company is as
contemplated by the Registration Statement; 
 (i) File information returns with respect to the Trust Account with any local, state or
federal taxing authority or provide periodic written statements to the Company documenting the taxes payable by the Company, if any, relating to any interest income earned on the Property; 

(j) Prepare, execute and file tax reports, income or other tax returns and pay any taxes with respect to any income generated by, and
activities relating to, the Trust Account, regardless of whether such tax is payable by the Trust Account or the Company, including, but not limited to, franchise and income tax obligations, except pursuant to Section 1(j)
hereof; or 
 (k) Verify calculations, qualify or otherwise approve the Company’s written requests for distributions pursuant to
Sections 1(i), 1(j) and 1(k) hereof. 
 4. Trust Account Waiver. The Trustee has no right of set-off or any right, title, interest or claim of any kind (“Claim”) to, or to any monies in, the Trust Account, and hereby irrevocably waives any Claim to, or to any monies in, the Trust
Account that it may have now or in the future. In the event the Trustee has any Claim against the Company under this Agreement, including, without limitation, under Section 2(b) or Section 2(c)
hereof, the Trustee shall pursue such Claim solely against the Company and its assets outside the Trust Account and not against the Property or any monies in the Trust Account. 

5. Termination. This Agreement shall terminate as follows: 

(a) If the Trustee gives written notice to the Company that it desires to resign under this Agreement, the Company shall use its reasonable
efforts to locate a successor trustee, pending which the Trustee shall continue to act in accordance with this Agreement. At such time that the Company notifies the Trustee that a successor trustee has been appointed by the Company and has agreed to
become subject to the terms of this Agreement, the Trustee shall transfer the management of the Trust Account to the successor trustee, including but not limited to the transfer of copies of the reports and statements relating to the Trust Account,
whereupon this Agreement shall terminate; provided, however, that in the event that the Company does not locate a successor trustee within ninety (90) days of receipt of the resignation notice from the Trustee, the Trustee may
submit an application to have the Property deposited with any court in the State of New York or with the United States District Court for the Southern District of New York and upon such deposit, the Trustee shall be immune from any liability
whatsoever; or 

 (b) At such time that the Trustee has completed the liquidation of the Trust Account and its
obligations in accordance with the provisions of Section 1(i) hereof and distributed the Property in accordance with the provisions of the Termination Letter, this Agreement shall terminate except with respect to Section 2(b). 

6. Miscellaneous. 
 (a)
The Company and the Trustee each acknowledge that the Trustee will follow the security procedures set forth below with respect to funds transferred from the Trust Account. The Company and the Trustee will each restrict access to confidential
information relating to such security procedures to authorized persons. Each party must notify the other party immediately if it has reason to believe unauthorized persons may have obtained access to such confidential information, or of any change
in its authorized personnel. In executing funds transfers, the Trustee shall rely upon all information supplied to it by the Company, including, account names, account numbers, and all other identifying information relating to a Beneficiary,
Beneficiary’s bank or intermediary bank. Except for any liability arising out of the Trustee’s gross negligence, fraud or willful misconduct, the Trustee shall not be liable for any loss, liability or expense resulting from any error in
the information or transmission of the funds. 
 (b) This 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. 

(c) This Agreement contains the entire agreement and understanding of the parties hereto with respect to the subject matter hereof. Except for
Sections 1(i), 1(j) and 1(k) hereof (which sections may not be modified, amended or deleted without the affirmative vote of sixty-five percent (65%) of the then outstanding Ordinary Shares and
Class B ordinary shares, par value $0.0001 per share, of the Company, voting together as a single class; provided that no such amendment will affect any Public Shareholder who has properly elected to redeem his, her or its shares of Ordinary
Shares in connection with a shareholder vote sought to amend this Agreement), this Agreement or any provision hereof may only be changed, amended or modified (other than to correct a typographical error) by a writing signed by each of the parties
hereto. 
 (d) The parties hereto consent to the jurisdiction and venue of any state or federal court located in the City of New York, State
of New York, for purposes of resolving any disputes hereunder. AS TO ANY CLAIM, CROSS-CLAIM OR COUNTERCLAIM IN ANY WAY RELATING TO THIS AGREEMENT, EACH PARTY WAIVES THE RIGHT TO TRIAL BY JURY. 

 (e) Any notice, consent or request to be given in connection with any of the terms or
provisions of this 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, by facsimile transmission or by electronic mail: 

if to the Trustee, to: 
 Continental Stock
Transfer & Trust Company 
 1 State Street, 30th Floor 

New York, New York 10004 
 Attn:
    Francis Wolf and Celeste Gonzalez 
 Email: fwolf@continentalstock.com 

Email: cgonzalez@continentalstock.com 
 if to the
Company, to: 
 Fortress Capital Acquisition Corp. 

1345 Avenue of the Americas 
 45th
Floor 
 New York, NY 10105 

Attn:   Daniel N. Bass 

Email: Dan@Fortress.com 
 in each case, with
copies to: 
 Weil, Gotshal & Manges LLP 

767 Fifth Avenue 
 New York, New
York 10153 
 Attn:     Alexander D. Lynch, Esq. 

Email: Alex.Lynch@weil.com 
 and 

Citigroup Global Markets Inc. 

388 Greenwich Street 
 New York,
NY 10013 
 Attn: [•] 
 and 

Goldman Sachs & Co. LLC 

200 West Street 
 New York, New
York 10282 
 Attn.: [•] 
 and 

Ropes & Gray LLP 
 1211
Avenue of the Americas 
 New York, NY 10036 

Attn:   Paul D. Tropp, Esq. 

Email: Paul.Tropp@ropesgray.com 

 (f) This Agreement may not be assigned by the Trustee without the prior consent of the
Company. 
 (g) This Agreement is the joint product of the Trustee and the Company and each provision hereof has been subject to the mutual
consultation, negotiation and agreement of such parties and shall not be construed for or against any party hereto. 
 (h) This Agreement
may be executed in any number of counterparts, each of which shall be deemed to be an original, but all such counterparts shall together constitute one and the same instrument. Delivery of a signed counterpart of this Agreement by facsimile or
electronic transmission shall constitute valid and sufficient delivery thereof. 
 (i) Each of the Company and the Trustee hereby represents
that it has the full right and power and has been duly authorized to enter into this Agreement and to perform its respective obligations as contemplated hereunder. The Trustee acknowledges and agrees that it shall not make any claims or proceed
against the Trust Account, including by way of set-off, and shall not be entitled to any funds in the Trust Account under any circumstance. 

(j) Each of the Company and the Trustee hereby acknowledges and agrees that Representatives, on behalf of the Underwriters, are third party
beneficiaries of this Agreement. 
 (k) Except as specified herein, no party to this Agreement may assign its rights or delegate its
obligations hereunder to any other person or entity. 
 [Signature Page Follows] 

 IN WITNESS WHEREOF, the parties have duly executed this Investment Management Trust
Agreement as of the date first written above. 
  

			
	CONTINENTAL STOCK TRANSFER & TRUST COMPANY, as Trustee
		
	By:	 	 
		 	Name: Francis Wolf
		 	Title:   Vice President
	
	 FORTRESS CAPITAL ACQUISITION CORP.

		
	By:	 	 
		 	Name: Daniel N. Bass
		 	Title: Chief Financial Officer

 SCHEDULE A 
  

							
	 Fee Item
	  	 Time and method of payment
	  	Amount	 
	 Initial set-up fee
	  	 Initial closing of Offering by wire transfer.
	  	$	3,500.00	 
			
	Trustee administration fee	  	Payable annually. First year fee payable, at initial closing of Offering by wire transfer, thereafter by wire transfer or check.	  	$	10,000.00	 
			
	Transaction processing fee for disbursements to Company under Sections 1(i) and 1(j)	  	Billed to Company following disbursement made to Company under Section 1.	  	$	250.00	 
			
	Paying Agent services as required pursuant to 
Section 1(i) and 1(k)	  	Billed to Company upon delivery of service pursuant to Section 1(i) and 1(k).	  	 	Prevailing rates	 

 EXHIBIT A 

[Letterhead of Company] 

[Insert date] 
 Continental Stock
Transfer & Trust Company 
 1 State Street, 30th Floor 

New York, New York 10004 
 Attn: Francis Wolf and Celeste Gonzalez

 Re: Trust Account No.     Termination Letter 

Dear Mr. Wolf and Ms. Gonzalez: 

Pursuant to Section 1(i) of the Investment Management Trust Agreement between Fortress Capital Acquisition Corp. (the
“Company”) and Continental Stock Transfer & Trust Company (the “Trustee”), dated as of [•], 2021 (the “Trust Agreement”), this is to advise you that the Company
has entered into an agreement with                  (the “Target Business”) to consummate a business combination with Target Business (the
“Business Combination”) on or about [insert date]. The Company shall notify you at least seventy-two (72) hours in advance of the actual date (or such shorter time period as you
may agree) of the consummation of the Business Combination (the “Consummation Date”). Capitalized terms used but not defined herein shall have the meanings set forth in the Trust Agreement. 

In accordance with the terms of the Trust Agreement, we hereby authorize you to commence to liquidate all of the assets of the Trust Account,
and to transfer the proceeds into the above-referenced account at J.P. Morgan Chase Bank, N.A. to the effect that, on the Consummation Date, all of the funds held in the Trust Account will be immediately available for transfer to the account or
accounts that the Company, and solely with respect to the Deferred Discount, the [Underwriters], shall direct on the Consummation Date. It is acknowledged and agreed that while the funds are on deposit in the trust operating account at J.P. Morgan
Chase Bank, N.A. awaiting distribution, neither the Company nor the Underwriters will earn any interest or dividends. 
 On the Consummation
Date (i) counsel for the Company shall deliver to you written notification that the Business Combination has been consummated, or will be consummated substantially, concurrently with your transfer of funds to the accounts as directed by the
Company (the “Notification”) and (ii) the Company shall deliver to you (a) [an affidavit] [a certificate] of the Chief Executive Officer of the Company, which verifies that the Business Combination has been approved by a
vote of the Company’s shareholders, if a vote is held and (b) [joint written instruction signed by the Company and any of the Representatives] with respect to the transfer of the funds held in the Trust Account, including payment of amounts
owed to public shareholders who have properly exercised their redemption rights and express instructions to pay the Deferred Discount from the Trust Account directly to the account or accounts directed by the [Underwriters] (the
“Instruction Letter”). You are hereby directed and authorized to transfer the funds held in the Trust Account immediately upon your receipt of the Notification 

 
and the Instruction Letter, in accordance with the terms of the Instruction Letter. In the event that certain deposits held in the Trust Account may not be liquidated by the Consummation Date
without penalty, you will notify the Company in writing of the same and the Company shall direct you as to whether such funds should remain in the Trust Account and be distributed after the Consummation Date to the Company. Upon the distribution of
all the funds, net of any payments necessary for reasonable unreimbursed expenses related to liquidating the Trust Account, your obligations under the Trust Agreement shall be terminated. 

In the event that the Business Combination is not consummated on the Consummation Date described in the notice thereof and we have not
notified you on or before the original Consummation Date of a new Consummation Date, then upon receipt by the Trustee of written instructions from the Company, the funds held in the Trust Account shall be reinvested as provided in Section 1(c)
of the Trust Agreement on the business day immediately following the Consummation Date as set forth in the notice as soon thereafter as possible. 
  

			
	Very truly yours,
	
	Fortress Capital Acquisition Corp.
		
	By:	 	 
		 	Name:
		 	Title:

 cc: Citigroup Global Markets Inc. 

      Goldman Sachs & Co. LLC 

 EXHIBIT B 

[Letterhead of Company] 

[Insert date] 
 Continental Stock
Transfer & Trust Company 
 1 State Street, 30th Floor 

New York, New York 10004 
 Attn: Francis Wolf and Celeste Gonzalez

 Re: Trust Account No.     Termination Letter 

Dear Mr. Wolf and Ms. Gonzalez: 

Pursuant to Section 1(i) of the Investment Management Trust Agreement between Fortress Capital Acquisition Corp. (the
“Company”) and Continental Stock Transfer & Trust Company (the “Trustee”), dated as of [•], 2021 (the “Trust Agreement”), this is to advise you that the Company
has been unable to effect a business combination with a Target Business (the “Business Combination”) within the time frame specified in the Company’s amended and restated Memorandum and Articles of Association, as
described in the Company’s Prospectus relating to the Offering. Capitalized terms used but not defined herein shall have the meanings set forth in the Trust Agreement. 

In accordance with the terms of the Trust Agreement, we hereby authorize you to liquidate all of the assets in the Trust Account and to
transfer the total proceeds into the trust operating account at J.P. Morgan Chase Bank, N.A. to await distribution to the Public Shareholders. The Company has selected
[                ]2 as the effective date for the purpose of determining when the Public Shareholders will be
entitled to receive their share of the liquidation proceeds. You agree to be the Paying Agent of record and, in your separate capacity as Paying Agent, agree to distribute said funds directly to the Company’s Public Shareholders in accordance
with the terms of the Trust Agreement and the amended and restated memorandum and articles of association of the Company. Upon the distribution of all the funds, net of any payments necessary for reasonable unreimbursed expenses related to
liquidating the Trust Account, your obligations under the Trust Agreement shall be terminated, except to the extent otherwise provided in Section 1(j) of the Trust Agreement. 

 

			
	Very truly yours,
	
	Fortress Capital Acquisition Corp.
		
	By:	 	 
		 	Name:
		 	Title:

 cc: Citigroup Global Markets Inc. 

      Goldman Sachs & Co. LLC 

  
  

	2 	 24 months from the closing of the Offering, or at a later date, if extended. 

 EXHIBIT C 

[Letterhead of Company] 

[Insert date] 
 Continental Stock
Transfer & Trust Company 
 1 State Street, 30th Floor 

New York, New York 10004 
 Attn: [Francis Wolf and Celeste
Gonzalez] 
 Re: Trust Account No.     Tax Payment Withdrawal Instruction 

Dear Mr. Wolf and Ms. Gonzalez: 

Pursuant to Section 1(j) of the Investment Management Trust Agreement between Fortress Capital Acquisition Corp. (the
“Company”) and Continental Stock Transfer & Trust Company (the “Trustee”), dated as of [•], 2021 (the “Trust Agreement”), the Company hereby requests that you
deliver to the Company $                 of the interest income earned on the Property as of the date hereof. Capitalized terms used but not defined herein shall have
the meanings set forth in the Trust Agreement. 
 The Company needs such funds to pay for the tax obligations as set forth on the attached
tax return or tax statement. In accordance with the terms of the Trust Agreement, you are hereby directed and authorized to transfer (via wire transfer) such funds promptly upon your receipt of this letter to the Company’s operating account at:

 [WIRE INSTRUCTION INFORMATION] 
  

			
	Very truly yours,
	
	Fortress Capital Acquisition Corp.
		
	By:	 	 
		 	Name:
		 	Title:

 cc: Citigroup Global Markets Inc. 

      Goldman Sachs & Co. LLC 

 EXHIBIT D 

[Letterhead of Company] 

[Insert date] 
 Continental Stock
Transfer & Trust Company 
 1 State Street, 30th Floor 

New York, New York 10004 
 Attn: Francis Wolf and Celeste Gonzalez

 Re: Trust Account No.     Shareholder Redemption Withdrawal Instruction 

Dear Mr. Wolf and Ms. Gonzalez: 

Pursuant to Section 1(k) of the Investment Management Trust Agreement between Fortress Capital Acquisition Corp. (the
“Company”) and Continental Stock Transfer & Trust Company (the “Trustee”), dated as of [•], 2021 (the “Trust Agreement”), the Company hereby requests that you
deliver to the redeeming Public Shareholders of the Company $                 of the principal and interest income earned on the Property as of the date hereof.
Capitalized terms used but not defined herein shall have the meanings set forth in the Trust Agreement. 
 The Company needs such funds to
pay its Public Shareholders who have properly elected to have their Ordinary Shares redeemed by the Company in connection with a shareholder vote to approve an amendment to the Company’s amended and restated memorandum and articles of
association (A) to modify the substance or timing of the Company’s obligation to allow redemption in connection with the Company’s initial Business Combination or to redeem 100% of the Company’s public Ordinary Shares if the
Company has not consummated an initial Business Combination within such time as is described in the Company’s amended and restated memorandum and articles of association or (B) with respect to any other provision relating to
shareholders’ rights or pre-initial Business Combination activity. As such, you are hereby directed and authorized to transfer (via wire transfer) such funds promptly upon your receipt of this letter to
the redeeming Public Shareholders in accordance with your customary procedures. 
  

			
	Very truly yours,
	
	Fortress Capital Acquisition Corp.
		
	By:	 	 
		 	Name:
		 	Title:

 cc: Citigroup Global Markets Inc. 

      Goldman Sachs & Co. LLCFORM OF PRIVATE PLACEMENT PLACEMENT WARRANTS PURCHASE AGREEMENT

 Exhibit 10.6 

PRIVATE PLACEMENT WARRANTS PURCHASE AGREEMENT 

THIS PRIVATE PLACEMENT WARRANTS PURCHASE AGREEMENT, effective as of [•], 2021 (as it may from time to time be amended, this
“Agreement”), is entered into by and between Fortress Capital Acquisition Corp., a Cayman Islands exempted company (the “Company”), and Fortress Capital Acquisition Sponsor LLC, a Delaware limited liability company
(the “Purchaser”). 
 WHEREAS: 

The Company intends to consummate an initial public offering of the Company’s units (the “Public Offering”), each unit
consisting of one Class A ordinary share of the Company, par value $0.0001 per share (each, a “Share”), and one-fifth of one redeemable warrant as set forth in the Company’s
registration statement on Form S-1, filed with the Securities and Exchange Commission (the “SEC”), File Number 333-251651 (the “Registration
Statement”), under the Securities Act of 1933, as amended (the “Securities Act”); 
 Each whole warrant entitles
the holder to purchase one Share at an exercise price of $11.50 per Share; and 
 The Purchaser has agreed to purchase an aggregate of
6,000,000 redeemable warrants (or up to 6,600,000 redeemable warrants if the over-allotment option in connection with the Public Offering is exercised in full) (the “Private Placement Warrants”), each whole Private Placement Warrant
entitling the holder to purchase one Share at an exercise price of $11.50 per Share. 
 NOW THEREFORE, in consideration of the mutual
promises contained in this Agreement and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties to this Agreement hereby, intending legally to be bound, agree as follows: 

AGREEMENT 
 Section 1.
Authorization, Purchase and Sale; Terms of the Private Placement Warrants. 
 A. Authorization of the Private Placement Warrants.
The Company has duly authorized the issuance and sale of the Private Placement Warrants to the Purchaser. 
 B. Purchase and Sale of the
Private Placement Warrants. 
 (i) On the date of the consummation of the Public Offering or on such earlier time and date as may be
mutually agreed by the Purchaser and the Company (the “Initial Closing Date”), the Company shall issue and sell to the Purchaser, and the Purchaser shall purchase from the Company, 6,000,000 Private Placement Warrants at a price of
$1.50 per warrant for an aggregate purchase price of $9,000,000 (the “Purchase Price”), which shall be paid by wire transfer of immediately available funds to the Company at least one day prior to the Initial Closing Date in
accordance with the Company’s wiring instructions; provided, however, that the Purchase Price shall be reimbursed to the Purchaser if the Initial Closing Date does not occur on the day 

 
following such wire payment. On the Initial Closing Date, following the payment by the Purchaser of the Purchase Price by wire transfer of immediately available funds to the Company, the Company,
at its option, shall deliver a certificate evidencing the Private Placement Warrants purchased on such date duly registered in the Purchaser’s name to the Purchaser, or effect such delivery in book-entry form. 

(ii) On the date of the consummation of each closing (if any) of the over-allotment option in connection with the Public Offering or on such
earlier time and date as may be mutually agreed by the Purchaser and the Company (each such date, an “Over-allotment Closing Date”, and, each Over-allotment Closing Date (if any) together with the Initial Closing Date, being
sometimes referred to herein as a “Closing Date”), the Company shall issue and sell to the Purchaser, and the Purchaser shall purchase from the Company, an aggregate of up to 600,000 Private Placement Warrants, in the same
proportion as the amount of the over-allotment option that is then so exercised, at a price of $1.50 per warrant for an aggregate purchase price of up to $900,000 (if the over-allotment option in connection with the Public Offering is exercised in
full) (the “Over-allotment Purchase Price”), which shall be paid by wire transfer of immediately available funds to the Company at least one day prior to such Over-allotment Closing Date in accordance with the Company’s wiring
instructions; provided, however, that the Over-allotment Purchase Price shall be reimbursed to the Purchaser if such Over-allotment Closing Date does not occur on the day following such wire payment. On the Over-allotment Closing Date, following the
payment by the Purchaser of the Over-allotment Purchase Price by wire transfer of immediately available funds to the Company, the Company shall, at its option, deliver a certificate evidencing the Private Placement Warrants purchased on such date
duly registered in the Purchaser’s name to the Purchaser, or effect such delivery in book-entry form. 
 C. Terms of the Private
Placement Warrants. 
 (i) Each Private Placement Warrant shall have the terms set forth in a Warrant Agreement to be entered into by
the Company and a warrant agent, in connection with the Public Offering (the “Warrant Agreement”). 
 (ii) At the time of
the closing of the Public Offering, the Company and the Purchaser shall enter into a registration rights agreement (the “Registration Rights Agreement”) pursuant to which the Company will grant certain registration rights to the
Purchaser relating to the Private Placement Warrants and the Shares underlying the Private Placement Warrants. 
 Section 2.
Representations and Warranties of the Company. As a material inducement to the Purchaser to enter into this Agreement and purchase the Private Placement Warrants, the Company hereby represents and warrants to the Purchaser (which representations
and warranties shall survive each Closing Date) that: 
 A. Organization and Corporate Power. The Company is an exempted company duly
incorporated, validly existing and in good standing under the laws of the Cayman Islands and is qualified to do business in every jurisdiction in which the failure to so qualify would reasonably be expected to have a material adverse effect on the
financial condition, operating results or assets of the Company. The Company possesses all requisite corporate power and authority necessary to carry out the transactions contemplated by this Agreement and the Warrant Agreement. 

 B. Authorization; No Breach. 

(i) The execution, delivery and performance of this Agreement and the Private Placement Warrants have been duly authorized by the Company as
of the Closing Date. This Agreement constitutes the valid and binding obligation of the Company, enforceable in accordance with its terms. Upon issuance in accordance with, and payment pursuant to, the terms of the Warrant Agreement and this
Agreement, the Private Placement Warrants will constitute valid and binding obligations of the Company, enforceable in accordance with their terms as of each Closing Date. 

(ii) The execution and delivery by the Company of this Agreement and the Private Placement Warrants, the issuance and sale of the Private
Placement Warrants, the issuance of the Shares upon exercise of the Private Placement Warrants and the fulfillment of, and compliance with, the respective terms hereof and thereof by the Company, do not and will not as of each Closing Date
(a) conflict with or result in a breach of the terms, conditions or provisions of, (b) constitute a default under, (c) result in the creation of any lien, security interest, charge or encumbrance upon the Company’s share capital
or assets under, (d) result in a violation of, or (e) require any authorization, consent, approval, exemption or other action by or notice or declaration to, or filing with, any court or administrative or governmental body or agency
pursuant to the amended and restated memorandum and articles of association of the Company (in effect on the date hereof or as may be amended prior to completion of the contemplated Public Offering), or any material law, statute, rule or regulation
to which the Company is subject, or any agreement, order, judgment or decree to which the Company is subject, except for any filings required after the date hereof under federal or state securities laws. 

C. Title to Securities. Upon issuance in accordance with, and payment pursuant to, and registration in the register of members of the
Company, the terms hereof and the Warrant Agreement, the Shares issuable upon exercise of the Private Placement Warrants will be duly and validly issued, fully paid and nonassessable. Upon issuance in accordance with, and payment pursuant to, the
terms hereof and the Warrant Agreement, the Purchaser will have good title to the Private Placement Warrants and the Shares issuable upon exercise of such Private Placement Warrants, free and clear of all liens, claims and encumbrances of any kind,
other than (i) transfer restrictions hereunder and under the other agreements contemplated hereby, (ii) transfer restrictions under federal and state securities laws, and (iii) liens, claims or encumbrances imposed due to the actions
of the Purchaser. 
 D. Governmental Consents. No permit, consent, approval or authorization of, or declaration to or filing with,
any governmental authority is required in connection with the execution, delivery and performance by the Company of this Agreement or the consummation by the Company of any other transactions contemplated hereby. 

 Section 3. Representations and Warranties of the Purchaser. As a material
inducement to the Company to enter into this Agreement and issue and sell the Private Placement Warrants to the Purchaser, the Purchaser hereby represents and warrants to the Company (which representations and warranties shall survive each Closing
Date) that: 
 A. Organization and Requisite Authority. The Purchaser possesses all requisite power and authority necessary to carry
out the transactions contemplated by this Agreement. 
 B. Authorization; No Breach. 

(i) This Agreement constitutes a valid and binding obligation of the Purchaser, enforceable in accordance with its terms, subject to
bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium and other laws of general applicability relating to or affecting creditors’ rights and to general equitable principles (whether considered in a proceeding in equity or
law). 
 (ii) The execution and delivery by the Purchaser of this Agreement and the fulfillment of and compliance with the terms hereof by
the Purchaser does not and shall not as of each Closing Date conflict with or result in a breach by the Purchaser of the terms, conditions or provisions of any agreement, instrument, order, judgment or decree to which the Purchaser is subject. 

C. Investment Representations. 

(i) The Purchaser is acquiring the Private Placement Warrants and, upon exercise of the Private Placement Warrants, the Shares issuable upon
such exercise (collectively, the “Securities”), for the Purchaser’s own account, for investment purposes only and not with a view towards, or for resale in connection with, any public sale or distribution thereof. 

(ii) The Purchaser is an “accredited investor” as such term is defined in Rule 501(a)(3) of Regulation D under the Securities Act.

 (iii) The Purchaser understands that the Securities are being offered and will be sold to it in reliance on specific exemptions from the
registration requirements of the United States federal and state securities laws and that the Company is relying upon the truth and accuracy of, and the Purchaser’s compliance with, the representations and warranties of the Purchaser set forth
herein in order to determine the availability of such exemptions and the eligibility of the Purchaser to acquire such Securities. 
 (iv)
The Purchaser did not decide to enter into this Agreement as a result of any general solicitation or general advertising within the meaning of Rule 502(c) under the Securities Act. 

(v) The Purchaser has been furnished with all materials relating to the business, finances and operations of the Company and materials
relating to the offer and sale of the Securities which have been requested by the Purchaser. The Purchaser has been afforded the opportunity to ask questions of the executive officers and directors of the Company. The Purchaser understands that its
investment in the Securities involves a high degree of risk and it has sought such accounting, legal and tax advice as it has considered necessary to make an informed investment decision with respect to the acquisition of the Securities. 

 (vi) The Purchaser understands that no United States federal or state agency or any other
government or governmental agency has passed on or made any recommendation or endorsement of the Securities or the fairness or suitability of the investment in the Securities by the Purchaser nor have such authorities passed upon or endorsed the
merits of the offering of the Securities. 
 (vii) The Purchaser understands that: (a) the Securities have not been and are not being
registered under the Securities Act or any state securities laws, and may not be offered for sale, sold, assigned or transferred unless (1) subsequently registered thereunder or (2) sold in reliance on an exemption therefrom; and
(b) except as specifically set forth in the Registration Rights Agreement, neither the Company nor any other person is under any obligation to register the Securities under the Securities Act or any state securities laws or to comply with the
terms and conditions of any exemption thereunder. In this regard, the Purchaser understands that the SEC has taken the position that promoters or affiliates of a blank check company and their transferees, both before and after a Business
Combination, are deemed to be “underwriters” under the Securities Act when reselling the securities of a blank check company. Based on that position, Rule 144 adopted pursuant to the Securities Act would not be available for resale
transactions of the Securities despite technical compliance with the requirements of such Rule, and the Securities can be resold only through a registered offering or in reliance upon another exemption from the registration requirements of the
Securities Act. 
 (viii) The Purchaser has such knowledge and experience in financial and business matters, knowledge of the high degree of
risk associated with investments in the securities of companies in the development stage such as the Company, is capable of evaluating the merits and risks of an investment in the Securities and is able to bear the economic risk of an investment in
the Securities in the amount contemplated hereunder for an indefinite period of time. The Purchaser has adequate means of providing for its current financial needs and contingencies and will have no current or anticipated future needs for liquidity
which would be jeopardized by the investment in the Securities. The Purchaser can afford a complete loss of its investment in the Securities. 

(ix) The Purchaser understands that the Private Placement Warrants shall bear the legend substantially in the form set forth in the Warrant
Agreement. 
 Section 4. Conditions of the Purchaser’s Obligations. The obligations of the Purchaser to purchase and pay for
the Private Placement Warrants are subject to the fulfillment, on or before each Closing Date, of each of the following conditions: 
 A.
Representations and Warranties. The representations and warranties of the Company contained in Section 2 shall be true and correct at and as of such Closing Date as though then made. 

B. Performance. The Company shall have performed and complied with all agreements, obligations and conditions contained in this
Agreement that are required to be performed or complied with by it on or before such Closing Date. 

 C. No Injunction. No litigation, statute, rule, regulation, executive order, decree,
ruling or injunction shall have been enacted, entered, promulgated or endorsed by or in any court or governmental authority of competent jurisdiction or any self-regulatory organization having authority over the matters contemplated hereby, which
prohibits the consummation of any of the transactions contemplated by this Agreement or the Warrant Agreement. 
 D. Warrant
Agreement. The Company shall have entered into a Warrant Agreement with a warrant agent on terms satisfactory to the Purchaser. 

Section 5. Conditions of the Company’s Obligations. The obligations of the Company to the Purchaser under this Agreement are
subject to the fulfillment, on or before each Closing Date, of each of the following conditions: 
 A. Representations and
Warranties. The representations and warranties of the Purchaser contained in Section 3 shall be true and correct at and as of such Closing Date as though then made. 

B. Performance. The Purchaser shall have performed and complied with all agreements, obligations and conditions contained in this
Agreement that are required to be performed or complied with by the Purchaser on or before such Closing Date. 
 C. No Injunction. No
litigation, statute, rule, regulation, executive order, decree, ruling or injunction shall have been enacted, entered, promulgated or endorsed by or in any court or governmental authority of competent jurisdiction or any self-regulatory organization
having authority over the matters contemplated hereby, which prohibits the consummation of any of the transactions contemplated by this Agreement or the Warrant Agreement. 

D. Warrant Agreement. The Company shall have entered into a Warrant Agreement with a warrant agent on terms satisfactory to the
Company. 
 Section 6. Termination. This Agreement may be terminated at any time after [•], 2021 upon the election by either
the Company or the Purchaser upon written notice to the other party if the closing of the Public Offering does not occur prior to such date. 

Section 7. Survival of Representations and Warranties. All of the representations and warranties contained herein shall survive each
Closing Date. 
 Section 8. Definitions. Terms used but not otherwise defined in this Agreement shall have the meaning assigned to
such terms in the Registration Statement. 
 Section 9. Miscellaneous. 

A. Successors and Assigns. Except as otherwise expressly provided herein, all covenants and agreements contained in this Agreement by
or on behalf of any of the parties hereto shall bind and inure to the benefit of the respective successors of the parties hereto whether so expressed or not. Notwithstanding the foregoing or anything to the contrary herein, the parties may not
assign this Agreement, other than assignments by the Purchaser to affiliates thereof. 

 B. Severability. Whenever possible, each provision of this Agreement shall 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 prohibited by or invalid under applicable law, such provision shall be ineffective only to the extent of such
prohibition or invalidity, without invalidating the remainder of this Agreement. 
 C. Counterparts. This Agreement may be executed
simultaneously in two or more counterparts, none of which need contain the signatures of more than one party, but all such counterparts taken together shall constitute one and the same agreement. 

D. Descriptive Headings; Interpretation. The descriptive headings of this Agreement are inserted for convenience only and do not
constitute a substantive part of this Agreement. The use of the word “including” in this Agreement shall be by way of example rather than by limitation. 

E. Governing Law. This Agreement shall be deemed to be a contract made under the laws of the State of New York and for all purposes
shall be construed in accordance with the internal laws of the State of New York. 
 F. Amendments. This Agreement may not be
amended, modified or waived as to any particular provision, except by a written instrument executed by all parties hereto. 
 [Signature page
follows] 

 IN WITNESS WHEREOF, the parties hereto have executed this Agreement to be effective as of the date
first set forth above. 
  

			
	COMPANY:
	
	FORTRESS CAPITAL ACQUISITION CORP.
		
	By:	 	 
		 	Name: Daniel N. Bass
		 	Title: Chief Financial Officer

  

			
	PURCHASER:
	
	FORTRESS CAPITAL ACQUISITION SPONSOR LLC
		
	By:	 	 
		 	Name: David N. Brooks
		 	Title: Secretary

 [Signature Page to the Private Placement Warrants Purchase Agreement]

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