Exhibit 10.4


 


LOCK-UP AGREEMENT


 


THIS LOCK-UP AGREEMENT (this
“Agreement”) is dated as of November 15, 2021 by and between the undersigned stockholder (the “Holder”)
and Archimedes Tech Spac Partners Co., a Delaware corporation (the “Parent”).


 


A. Parent,
ATSPC Merger Sub Inc., a Delaware corporation and wholly-owned subsidiary of the Parent and Soundhound, Inc., a Delaware corporation (the
“Company”), entered into a Merger Agreement dated as of November 15, 2021 (the “Merger Agreement”).
Capitalized terms used, but not otherwise defined herein, shall have the meanings ascribed to such terms in the Merger Agreement.


 


B.  Pursuant
to the Merger Agreement, upon the consummation of the transactions contemplated thereby (the “Closing”), Parent will
become the 100% stockholder of the Company.


 


C.  The
Holder is the record and/or beneficial owner of certain shares of Company Capital Stock, which will be exchanged for shares of Parent
Common Stock pursuant to the Merger Agreement.


 


D.  As
a condition of, and as a material inducement for the Parent to enter into and consummate the transactions contemplated by the Merger Agreement,
the Holder has agreed to execute and deliver this Agreement.


 


NOW, THEREFORE, for and in
consideration of the mutual covenants and agreements set forth herein, and other good and valuable consideration, the receipt and sufficiency
of which is hereby acknowledged, the parties, intending to be legally bound, agree as follows:


 


AGREEMENT


 


1. Lock-Up.


 


(a) Subject
to Section 3 below, during the Lock-Up Period, the Holder agrees that it, he or she will not offer, sell, contract to sell, pledge or
otherwise dispose of, directly or indirectly, any of the Lock-Up Shares (as defined below), enter into a transaction that would have the
same effect, or enter into any swap, hedge or other arrangement that transfers, in whole or in part, any of the economic consequences
of ownership of the Lock-Up Shares or otherwise, publicly disclose the intention to make any offer, sale, pledge or disposition, or to
enter into any transaction, swap, hedge or other arrangement, or engage in any Short Sales (as defined below) with respect to the Lock-Up
Shares (any of the foregoing, a “Prohibited Transfer”).


 


(b)  In
furtherance of the foregoing, during the Lock-Up Period, the Parent will (i) place a stop order on all the Lock-Up Shares, including those
which may be covered by a registration statement, and (ii) notify the Parent’s transfer agent in writing of the stop order and the
restrictions on the Lock-Up Shares under this Agreement and direct the Parent’s transfer agent not to process any attempts by the
Holder to resell or transfer any Lock-Up Shares, except in compliance with this Agreement.


  


(c) For
purposes hereof, “Short Sales” include all “short sales” as defined in Rule 200 promulgated under Regulation
SHO under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and all types of direct and indirect
stock pledges, forward sale contracts, options, puts, calls, swaps and similar arrangements (including on a total return basis), and sales
and other transactions through non-US broker dealers or foreign regulated brokers.


 




     


     


    

 


(d)  The
term “Lock-Up Period” means the date from the Closing until the date that is six (6) months after the date of the Closing,
or if sooner, the date after the Closing on which Parent consummates a liquidation, merger, share exchange or other similar transaction
with an unaffiliated third party that results in all of Parent’s stockholders having the right to exchange their equity holdings
in Parent for cash, securities or other property.


 


2. Beneficial
Ownership. The Holder hereby represents and warrants that as of the date of this Agreement it does not beneficially own, directly
or through its nominees (as determined in accordance with Section 13(d) of the Exchange Act, and the rules and regulations promulgated
thereunder), any shares of Parent Common Stock, or any economic interest in or derivative of such shares, other than those shares of Parent
Common Stock issued pursuant to the Merger Agreement (“Merger Shares”) or shares that it may acquire through the PIPE
Financing. For purposes of this Agreement, the Merger Shares beneficially owned by the Holder, together with any securities paid as dividends
or distributions with respect to such securities or into which such securities are exchanged or converted, are collectively referred to
as the “Lock-Up Shares” (for the avoidance of doubt, Lock-Up Shares shall not include shares of Parent Common Stock
acquired by such Holder in open market transactions, PIPE Shares or shares of Parent Common Stock issuable upon conversion of the issued
and outstanding Company Convertible Notes).


 


3. Permitted
Transfers. Notwithstanding the foregoing, and subject to the conditions below, a Prohibited Transfer will not include, and the undersigned
may transfer Lock-Up Shares in connection with (a) transfers or distributions to the Holder’s direct or indirect affiliates (within
the meaning of Rule 405 under the Securities Act of 1933, as amended (the “Securities Act”)) or to the estates of any
of the foregoing; (b) transfers by bona fide gift to a member of the Holder’s immediate family (for purposes of this Agreement,
“immediate family” shall mean with respect to any natural person, any of the following: such person’s spouse, the siblings
of such person and his or her spouse, and the direct descendants and ascendants (including adopted and step children and parents) of such
person and his or her spouses and siblings) or to a trust, the beneficiary of which is the Holder or a member of the Holder’s immediate
family for estate planning purposes; (c) by virtue of the laws of descent and distribution upon death of the Holder; (d) pursuant to a
qualified domestic relations order, (e) transfers to the Parent’s officers, directors or their affiliates, (f) transfers as a dividend
or distribution to limited partners, shareholders, members of, or owners of similar equity interests in the Holder, (g) pledges of Lock-Up
Shares as security or collateral in connection with a borrowing or the incurrence of any indebtedness by the Holder, provided,
however, that such borrowing or incurrence of indebtedness is secured by either a portfolio of assets or equity interests issued
by multiple issuers, (h) transfers pursuant to a bona fide third-party tender offer, merger, stock sale, recapitalization, consolidation
or other transaction involving a change of control of Parent; provided, however, that in the event that such tender offer,
merger, recapitalization, consolidation or other such transaction is not completed, the Lock-Up Shares subject to this Agreement shall
remain subject to this Agreement, (i) the establishment of a trading plan pursuant to Rule 10b5-1 promulgated under the Exchange Act;
provided, however, that such plan does not provide for the transfer of Lock-Up Shares during the Lock-Up Period, (k) transfers
to satisfy tax withholding obligations in connection with the exercise of options to purchase shares of Parent Common Stock or the vesting
of stock-based awards; and (k) transfers in payment on a “net exercise” or “cashless” basis of the exercise or
purchase price with respect to the exercise of options to purchase shares of Parent Common Stock; provided, however, that,
in the case of any transfer pursuant to the foregoing (a) through (f) clauses, it shall be a condition to any such transfer that (i) the
transferee/donee agrees to be bound by the terms of this Agreement (including the restrictions set forth in Section 1) to the same extent
as if the transferee/donee were a party hereto; and (ii) each party (donor, donee, transferor or transferee) shall not be required by
law (including the disclosure requirements of the Securities Act and the Exchange Act) to make, and shall agree to not voluntarily make,
any filing or public announcement of the transfer or disposition prior to the expiration of the Lock-Up Period.


 




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4. Representations
and Warranties. Each of the parties hereto, by their respective execution and delivery of this Agreement, hereby represents and warrants
to the other that (a) such party has the full right, capacity and authority to enter into, deliver and perform its respective obligations
under this Agreement, (b) this Agreement has been duly executed and delivered by such party and is a binding and enforceable obligation
of such party and, enforceable against such party in accordance with the terms of this Agreement, and (c) the execution, delivery and
performance of such party’s obligations under this Agreement will not conflict with or breach the terms of any other agreement,
contract, commitment or understanding to which such party is a party or to which the assets or securities of such party are bound. The
Holder has independently evaluated the merits of his/her/its decision to enter into and deliver this Agreement, and such Holder confirms
that he/she/it has not relied on the advice of Company, Company’s legal counsel, or any other person.


 


5. No
Additional Fees/Payment. Other than the consideration specifically referenced herein to be issued in connection with the Merger Agreement,
the parties hereto agree that no fee, payment or additional consideration in any form has been or will be paid to the Holder in connection
with this Agreement.


 


6. Notices.
Any notice hereunder shall be sent in writing, addressed as specified below, and shall be deemed given: (a) if by hand or nationally recognized
overnight courier service, by 5:00 PM Pacific Time on a Business Day, addressee’s day and time, on the date of delivery, and if
delivered after 5:00 PM Pacific Time, on the first Business Day after such delivery; (b) if by fax, on the date that transmission is affirmatively
confirmed, if by 5:00 PM Pacific Time on a Business Day, addressee’s day and time, and if confirmed after 5:00 PM Pacific Time,
on the first Business Day after the date of such confirmation; (c) if by email, on the date of transmission with affirmative confirmation
of receipt; or (d) three (3) Business Days after mailing by prepaid certified or registered mail, return receipt requested. Notices shall
be addressed to the respective parties as follows (excluding telephone numbers, which are for convenience only), or to such other address
as a party shall specify to the others in accordance with these notice provisions:


 


if to Parent after the Closing,
to:


 


SoundHound, Inc.


5400 Betsy Ross Drive


Santa Clara, CA 95054


Attn: Keyvan Mohajer, Chief Executive Officer


E-mail: keyvan@soundhound.com


 


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


 


Ellenoff Grossman & Schole LLP


1345 Avenue of the Americas


New York, NY 10015


Attn: Douglas S. Ellenoff, Esq.; Matthew A. Gray, Esq.


Fax: (212) 370-7889


E-mail: ellenoff@egsllp.com; mgray@egsllp.com


 


if to Parent prior to the Closing:


 


Archimedes Tech SPAC Partners Co.

2093 Philadelphia Pike #1968

Claymont, DE 19703-2424 


Attn: Long Long, Chief Financial Officer

E-mail: long@spacpartners.com


 




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


 


Loeb & Loeb LLP

345 Park Ave

New York, NY 10154

Attention: Mitchell S. Nussbaum

Fax: 212.504.3013

E-mail: mnussbaum@loeb.com


 


if to the Holder, to the address
set forth on the Holder’s signature page hereto.


 


7. Termination
of Merger Agreement. This Agreement shall be binding upon the Holder upon the Holder's execution and delivery of this Agreement, but
this Agreement shall only become effective upon the Closing. Notwithstanding anything to the contrary contained herein, in the event that
the Merger Agreement is terminated in accordance with its terms prior to the Closing, this Agreement and all rights and obligations of
the parties hereunder shall automatically terminate and be of no further force or effect.


 


8. Enumeration
and Headings; Interpretation. The enumeration and headings contained in this Agreement are for convenience of reference only and shall
not control or affect the meaning or construction of any of the provisions of this Agreement. The titles and subtitles used in this Agreement
are for convenience only and are not to be considered in construing or interpreting this Agreement. In this Agreement, unless the context
otherwise requires: (i) any pronoun used in this Agreement shall include the corresponding masculine, feminine or neuter forms, and the
singular form of nouns, pronouns and verbs shall include the plural and vice versa; (ii) “including” (and with correlative
meaning “include”) means including without limiting the generality of any description preceding or succeeding such term and
shall be deemed in each case to be followed by the words “without limitation”; and (iii) the words “herein,” “hereto,”
and “hereby” and other words of similar import shall be deemed in each case to refer to this Agreement as a whole and not
to any particular section or other subdivision of this Agreement.


 


9. Counterparts.
This Agreement may be executed in facsimile (including by email in pdf) and in any number of counterparts, each of which when so executed
and delivered shall be deemed an original, but all of which shall together constitute one and the same agreement.


 


10. Successors
and Assigns. This Agreement and the terms, covenants, provisions and conditions hereof shall be binding upon, and shall inure to the
benefit of, the respective heirs, successors and assigns of the parties hereto. The Holder hereby acknowledges and agrees that this Agreement
is entered into for the benefit of and is enforceable by Parent and its successors and assigns.


 


11. No
Third Parties. Nothing contained in this Agreement or in any instrument or document executed by any party in connection with the transactions
contemplated hereby shall create any rights in, or be deemed to have been executed for the benefit of, any person or entity that is not
a party hereto or thereto or a successor or permitted assign of such a party; provided, that the Company is an express third party beneficiary
of this Agreement and shall have the rights to enforce this agreement against the parties hereto prior to the Closing.


 




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12. Severability.
If any provision of this Agreement is held to be invalid or unenforceable for any reason, such provision will be conformed to prevailing
law rather than voided, if possible, in order to achieve the intent of the parties and, in any event, the remaining provisions of this
Agreement shall remain in full force and effect and shall be binding upon the parties hereto.


 


13. Amendment
and Waivers. This Agreement may be amended or modified, or any provision hereof waived, by written agreement executed by each of the
parties hereto (including prior to the Closing, the Company). No failure or delay by a party in exercising any right hereunder shall operate
as a waiver thereof. No waivers of or exceptions to any term, condition, or provision of this Agreement, in any one or more instances,
shall be deemed to be or construed as a further or continuing waiver of any such term, condition, or provision.


 


14. Further
Assurances. Each party shall do and perform, or cause to be done and performed, all such further acts and things, and shall execute
and deliver all such other agreements, certificates, instruments and documents, as any other party may reasonably request in order to
carry out the intent and accomplish the purposes of this Agreement and the consummation of the transactions contemplated hereby.


 


15. No
Strict Construction. The language used in this Agreement will be deemed to be the language chosen by the parties to express their
mutual intent, and no rules of strict construction will be applied against any party.


 


16. Dispute
Resolution. Section 11.15, 11.16 and 11.17 of the Merger Agreement is incorporated by reference herein to apply with full force to
any disputes arising under this Agreement.


 


17. Governing
Law. Section 11.7 of the Merger Agreement is incorporated by reference herein to apply with full force to any disputes arising under
this Agreement.


 


18. Entire
Agreement; Controlling Agreement. This Agreement constitutes the full and entire understanding and agreement among the parties with
respect to the subject matter hereof, and any other written or oral agreement relating to the subject matter hereof existing between the
parties is expressly canceled; provided, that, for the avoidance of doubt, the foregoing shall not affect the rights and obligations of
the parties under the Merger Agreement or any Additional Agreement. To the extent the terms of this Agreement (as amended, supplemented,
restated or otherwise modified from time to time) directly conflicts with a provisions in the Merger Agreement, the terms of this Agreement
shall control.


 


[Signature Page Follows]


 




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IN WITNESS WHEREOF, the parties
hereto have caused this Lock-Up Agreement to be duly executed by their respective authorized signatories as of the date first indicated
above.


 


	 	Archimedes Tech SPAC Partners Co.
	 	
    
	 
	 	By:	 
	 	Name: 	Stephen N. Cannon 
	 	Title:	Chief Executive Officer



 


{Signature Page to Lock-Up Agreement}


 



    


     


    

 


IN WITNESS WHEREOF, the parties
hereto have caused this Lock-Up Agreement to be duly executed by their respective authorized signatories as of the date first indicated
above.


 


	 	HOLDER:
	 	 	 
	 	Name of Holder:	 






	 	By:	 
	 	Name: 	 
	 	Title:	 


 


	 	Address for Notice: 
	 	 	 
	 	Address:	                       
	 	 
	 	 
	 	Facsimile No.:	 
	 	Telephone No.:	                       
	 	Email:	       


 


{Signature Page to Lock-Up Agreement}