Document:

EX-10.3

 Exhibit 10.3 

July 7, 2021 
 Healthcare Capital Corp.

 301 North Market Street 
 Suite 1414 

Wilmington, DE 19801 
 Attention: William Johns, CEO 

Email: wjohns@healthccc.com 
 Alpha Tau Medical Ltd. 

Kiryat HaMada St 5 
 Jerusalem, 9777605, Israel 

Attention: Uzi Sofer, CEO 
 Email: uzi@alphataumedical.com 

Re: Sponsor Support Agreement 
 Ladies and Gentlemen: 

This letter agreement (this “Sponsor Agreement”) is being delivered to Healthcare Capital Corp., a Delaware corporation
(“SPAC”), and Alpha Tau Medical Ltd., a company organized under the laws of the State of Israel (the “Company”), in accordance with that certain Agreement and Plan of Merger, dated as of the date hereof, by and
among SPAC, the Company, and the other parties thereto (the “Merger Agreement”) and the transactions contemplated thereby or relating thereto (including the PIPE Financing, the “Business Combination”) and hereby
amends and restates in its entirety that certain letter, dated January 14, 2021, from Healthcare Capital Sponsor LLC, a Delaware limited liability company (the “Sponsor”), and the undersigned individuals, each of whom is a
member of SPAC’s board of directors (the “SPAC Board”) or management team (each, an “Insider” and collectively, the “Insiders”), to SPAC (the “Prior Letter Agreement”). Certain
capitalized terms used herein are defined in Section 12 hereof. Capitalized terms used but not otherwise defined herein have the respective meanings ascribed to such terms in the Merger Agreement. 

The Sponsor and each Insider hereby acknowledges and agrees that, as of the date hereof, the Prior Letter Agreement shall terminate and be of no further force
or effect without any further liability thereunder. 
 Unless the context of this Sponsor Agreement otherwise requires, (i) words of any gender include
each other gender, (ii) words using the singular or plural number also include the plural or singular number, respectively, (iii) the terms “hereof,” “herein,” “hereby,” “hereto” and derivative or
similar words refer to this entire Sponsor Agreement, (iv) the terms “Section” and “Schedule” refer to the specified Section or Schedule of or to this Sponsor Agreement unless otherwise specified, (v) the word
“including” shall mean “including without limitation,” (vi) the word “or” shall be disjunctive but not exclusive and have the meaning represented by the term “and/or”, and (vii) the phrase “to the
extent” means the degree to which a subject matter or other thing extends, and such phrase shall not mean simply “if”. 
 In order to induce
the Company and SPAC to enter into the Merger Agreement and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Sponsor and each Insider hereby agrees with SPAC and, at all times prior to any
valid termination of the Merger Agreement, the Company as follows: 
  

	1)	 The Sponsor and each Insider irrevocably agrees that it, he or she shall: 

 

	 	a)	 vote all SPAC Class A Shares and Founder Shares owned by it, him or her (all such common stock, the
“Covered Shares”) in favor of the Business Combination and each other proposal related to the Business Combination included on the agenda for the special meeting of stockholders of SPAC relating to the Business Combination;

  

	 	b)	 when such meeting of stockholders is held, appear at such meeting or otherwise cause such Covered Shares to be
counted as present thereat for the purpose of establishing a quorum; 

  
 1 

	 	c)	 vote (or execute and return an action by written consent), or cause to be voted at such meeting, or validly
execute and return and cause such consent to be granted with respect to, all of such Covered Shares against any SPAC Alternative Transaction Proposal or any other action that would reasonably be expected to impede, interfere with, delay, postpone or
adversely affect the Merger or any of the other transactions contemplated by the Merger Agreement or result in a breach of any covenant, representation or warranty or other obligation or agreement of SPAC under the Merger Agreement or any other
agreement entered into in connection with the Business Combination or result in any of the conditions set forth in Article IX of the Merger Agreement not being fulfilled, result in a breach of any covenant, representation or warranty or other
obligation or agreement of the Sponsor or the Insiders contained in this Sponsor Agreement or change in any manner the dividend policy or capitalization of, including the voting rights of, any class of Equity Securities; 

 

	 	d)	 vote (or execute and return an action by written consent), or cause to be voted at such meeting, or validly
execute and return and cause such consent to be granted with respect to, all of such Covered Shares against any change in business, management or board of directors of SPAC (other than in connection with the Business Combination as contemplated by
the Transaction Agreements); and 

  

	 	e)	 not redeem, or seek to redeem, any Covered Shares owned by it, him or her in connection with such shareholder
approval or otherwise. 

 Prior to any valid termination of the Merger Agreement in accordance with its terms, the Sponsor
and each Insider shall take, or cause to be taken, all actions and do, or cause to be done, all things reasonably necessary under applicable Laws to consummate the Business Combination, the PIPE Financing and the other transactions contemplated by
the Merger Agreement or any other Transaction Agreement, in each case on the terms and subject to the conditions set forth therein. 
 The
obligations of the Sponsor specified in this Section 1 shall apply whether or not the Merger or any action described above is recommended by the SPAC Board or if the SPAC Board has changed, withdrawn, withheld, amended,
qualified or modified, or (privately or publicly) proposed to change, withdraw, withhold, amend, qualify or modify the SPAC Board Recommendation; provided that nothing herein shall amend, limit or otherwise modify any obligation contained in
the Merger Agreement (including Section 7.08 thereof). 
  

	2)	 The Sponsor and each Insider hereby agrees and acknowledges that SPAC and, prior to any valid termination of
the Merger Agreement in accordance with its terms, the Company, would be irreparably injured in the event of a breach by the Sponsor or any Insider of its, his or her obligations under Section 1 or
Section 3, as applicable, of this Sponsor Agreement. Further, monetary damages would not be an adequate remedy for any breach described in the foregoing sentence and the non-breaching
party shall be entitled to seek an injunction, specific performance or other equitable relief, in addition to any other remedy that such party may have in law or in equity, in the event of any such breach (without providing any bond or other
security in connection with any such remedy). The Sponsor and each Insider hereby agrees that it will not allege, and hereby waives the defense, that SPAC or the Company, as applicable, has an adequate remedy at law or that an award of specific
performance is not an appropriate remedy for any reason at law or equity. 

  

	3)	 Transfers. 

  

	 	a)	 Without the prior written consent of the Company (which may be withheld in the Company’s sole and absolute
discretion), no Sponsor or Insider, as applicable, shall Transfer any Founder Shares, Private Placement Warrants or other Equity Securities of SPAC until the earlier of (i) without limiting Section 3(b), the
consummation of the Closing (the “Effective Time”) or (ii) the valid termination of the Merger Agreement in accordance with its terms. 

  

	 	b)	 In the event the Business Combination is consummated, none of the Sponsor and each Insider shall Transfer any
Equity Securities of the Company Beneficially Owned by it, him or her immediately following the Effective Time (such Equity Securities, the “Lock-Up Securities” and such obligation not to
Transfer, the “Founder Shares Lock-up”) during the period beginning on the Closing Date and continuing through the date that is one year after the Closing Date. Notwithstanding the foregoing,
if, subsequent to the Effective Time, the volume-weighted average price of Company Ordinary Shares on NASDAQ (or the U.S. exchange on which the Company Ordinary Shares are then listed) exceeds $12.00 per share (as adjusted for share sub-divisions, share capitalizations, reorganizations, recapitalizations and the like recapitalization) for any 20 trading days within any 30-trading day period commencing at
least 150 days after the Closing Date, the Lock-Up Securities shall be released from the Founder Shares Lock-up. 

  
 2 

	 	c)	 Notwithstanding the provisions set forth in Sections 3(a) or 3(b), Transfers of the Founder
Shares, Private Placement Warrants or other Equity Securities of SPAC or the Company, as applicable, and that are held by the Sponsor, any Insider or any of their permitted transferees (that have complied with this
Section 3(c)), are permitted (i) to SPAC’s officers or directors, any immediate family member of any of SPAC’s officers or directors or any affiliate of the Sponsor or to any member(s) of the Sponsor or any
of their affiliates; (ii) in the case of an individual, by gift to a member of such individual’s immediate family or to a trust, the beneficiary of which is a member of such individual’s immediate family, an affiliate of such
individual or to a charitable organization; (iii) in the case of an individual, by virtue of laws of descent and distribution upon death of such individual; (iv) in the case of an individual, pursuant to a qualified domestic relations
order; (v) solely with the prior written consent of the Company in respect of each and every instance, by private sales or transfers made in connection with the consummation of the Business Combination at prices no greater than the price at
which the shares or warrants were originally purchased; or (vi) by virtue of the laws of the State of Delaware or the Sponsor’s limited liability company agreement upon dissolution of the Sponsor; provided, however, that in
the case of clauses (i) through (vi), such permitted transferees must, before any such Transfer is effected, enter into a written agreement with SPAC (if prior to the Effective Time) and the Company agreeing to be bound by this Sponsor
Agreement (including the provisions relating to voting, the Trust Account, transfer restrictions and liquidating distributions). 

  

	4)	 Sponsor and each Insider hereby agrees that, during the period commencing on the date hereof and ending at the
Effective Time, Sponsor and each Insider shall not enter into, amend, supplement or otherwise modify any Contract between or among Sponsor or such Insider, anyone related by blood, marriage or adoption to such Insider or any Affiliate of such Person
(other than SPAC and its Subsidiaries), on the one hand, and SPAC or any of SPAC’s Subsidiaries, on the other hand. 

  

	5)	 Sponsor and each Insider hereby irrevocably and unconditionally waives and agrees not to assert, claim or
perfect any rights to adjustment or other anti-dilution protection with respect to the rate that the Founder Shares held by him, her or it converts into SPAC Class A Shares pursuant to Section 4.3(b)(ii) of the SPAC A&R Certificate of
Incorporation or any other anti-dilution protections or other adjustment or similar protection that arise in connection with the issuance of Equity Securities of SPAC or the Company. 

 

	6)	 Sponsor and each Insider hereby represents and covenants that Sponsor and such Insider has not entered into,
and shall not enter into, any Contract that could restrict, limit or interfere with the performance of Sponsor’s or such Insider’s obligations hereunder. 

 

	7)	 Sponsor and each Insider has full right and power, without violating any agreement to which it is a party or by
which it is bound (including any non-competition or non-solicitation agreement with any employer or former employer), to enter into this Sponsor Agreement and perform
its obligations hereunder. 

  

	8)	 The Sponsor and certain Insiders are currently, and as of the Closing will be, the record owners of all of the
outstanding Founder Shares and outstanding Private Placement Warrants. The Sponsor and Insiders’ ownership of Equity Securities of SPAC, as of the date hereof, is set forth on Schedule A hereto. As of the date of this Sponsor Agreement and as
of the Closing, neither Sponsor nor any Insider nor any of their respective Affiliates (i) owns of record or Beneficially Owns any Equity Securities of SPAC, except as set forth on Schedule A or (ii) has made any loans, or otherwise
provided any funding, to SPAC except as expressly set forth on Schedule A. 

 9) 

 

	 	a)	 The Sponsor hereby agrees that immediately prior to the Effective Time, the Sponsor shall automatically be
deemed to irrevocably transfer to SPAC, surrender and forfeit (and the Sponsor shall take all actions necessary to effect such transfer, surrender and forfeiture) for no consideration, the Sponsor Equity set forth on Part I of Schedule B.

  

	 	b)	 The Sponsor hereby agrees that in the event that the Aggregate Transaction Proceeds are less than or equal to
$225,000,000, the Sponsor shall, immediately prior to the Effective Time, automatically be deemed to irrevocably transfer to SPAC, surrender and forfeit (and the Sponsor shall take all actions necessary to effect such transfer, surrender and
forfeiture) for no consideration the Sponsor Equity set forth on Part II of Schedule B (“Redemption Equity”) (for the avoidance of doubt, such transfer, surrender and forfeiture shall be in addition to the transfer, surrender and
forfeiture of the Sponsor Equity pursuant to Section 9(a)). 

  
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	 	c)	 The Sponsor hereby agrees that in the event that the Aggregate Transaction Proceeds exceed $225,000,000 but are
less than $250,000,000, the Sponsor shall, immediately prior to the Effective Time, automatically be deemed to irrevocably transfer to SPAC, surrender and forfeit (and the Sponsor shall take all actions necessary to effect such transfer, surrender
and forfeiture) for no consideration such percentage of the Redemption Equity that is equal to 100% minus the quotient of (x) the amount by which the Aggregate Transaction Proceeds exceed $225,000,000 (not to exceed $25,000,000), divided by (y)
$25,000,000 (for the avoidance of doubt, such transfer, surrender and forfeiture shall be in addition to the transfer, surrender and forfeiture of the Sponsor Equity pursuant to Section 9(a)). 

 

	 	d)	 The Sponsor hereby agrees that notwithstanding anything to the contrary contained herein or in the Merger
Agreement, the Equity Securities of the Company set forth on Part III of Schedule B (“Conditional Equity”) shall not vest as of the Effective Time but instead shall only vest if, during the period beginning on the Closing Date and
continuing through the date that is three years after the Closing Date (the “Earnout Period”), the volume-weighted average price of Company Ordinary Shares on NASDAQ (or the U.S. exchange on which the Company Ordinary Shares are
then listed) exceeds $14.00 per share (as adjusted for share sub-divisions, share capitalizations, reorganizations, recapitalizations and the like recapitalization) for 20 trading days within any 30-trading day period (the “Earnout Condition”). If the Earnout Condition is not satisfied, the Conditional Equity shall not vest and the Sponsor shall, immediately as of the expiration of the
Earnout Period, automatically be deemed to irrevocably transfer to the Company, surrender and forfeit (and the Sponsor shall take all actions necessary to effect such transfer, surrender and forfeiture) for no consideration the Conditional Equity.
During the Earnout Period, subject to Section 3(c), the Sponsor shall not Transfer the Conditional Equity. 

  

	10)	 At the Closing, each of the Company and the Persons set forth on Schedule A hereto will enter into a joinder to
the Amended IRA attached as Schedule C hereto, to be effective as of the Closing. 

  

	11)	 To the extent the Company reasonably determines, and notifies the Sponsor and the applicable Insider of such
determination at least five (5) business days prior to the Closing Date, that pursuant to The Encouragement of Research, Development and Technological Innovation in the Industry Law 5744-1984 and the rules and regulations promulgated thereunder
(collectively, the “IIA Law”), and in connection with the issuance of the Equity Securities of the Company to the Sponsor or any Insider, the Sponsor or such Insider is required to deliver an undertaking towards the National
Technological Innovation Authority in the form and substance prescribed under the IIA Law (the “IIA Undertaking”), the Sponsor and such Insider shall deliver to the Company a duly executed IIA Undertaking prior to the Closing Date.

  

	12)	 As used herein, (i) “Beneficially Own” has the meaning ascribed to it in Section 13(d) of
the Securities Exchange Act; (ii) “Founder Shares” means the shares of Class B common stock, par value $0.0001 per share, of SPAC and the SPAC Class A Shares issuable upon conversion of such shares in connection with the
Closing; (iii) “Transfer” means 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, in each case,
directly or indirectly, or establishment or increase of a put equivalent position or liquidation with respect to or decrease of a call equivalent position within the meaning of Section 16 of the Exchange Act and the rules and regulations of the
SEC 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, or interest in, 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); (iv) “Private Placement
Warrants” means the SPAC Warrants to purchase up to 6,800,000 SPAC Class A Shares that the Sponsor purchased for an aggregate purchase price of $6,800,000, or $1.00 per SPAC Warrant, in a private placement that occurred simultaneously
with the consummation of the SPAC’s initial public offering; and (v) “Sponsor Equity” means, collectively, the Founder Shares and the Private Placement Warrants. 

  
 4 

	13)	 This Sponsor Agreement and the other agreements referenced herein constitute the entire agreement and
understanding of the parties hereto in respect of the subject matter hereof and supersede 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, including, without limitation, with respect to the Sponsor and each Insider. This Sponsor Agreement may not be changed, amended, modified or waived as to any particular provision, except by a
written instrument executed by SPAC, the Company and the other parties charged with such change, amendment, modification or waiver, it being acknowledged and agreed that the Company’s execution of such an instrument will not be required after
any valid termination of the Merger Agreement. 

  

	14)	 No party hereto may assign either this Sponsor Agreement or any of its rights, interests or obligations
hereunder, other than in conjunction with transfers expressly permitted by Section 3 (and subject to the terms thereof), without the prior written consent of the other parties. Any purported assignment in violation of this
Section 14 shall be void and ineffectual and shall not operate to transfer or assign any interest or title to the purported assignee. This Sponsor Agreement shall be binding on the Sponsor, each Insider, SPAC and the
Company and their respective successors, heirs and permitted assigns or transferees. 

  

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

 

	16)	 This Sponsor Agreement may be executed in any number of original, electronic 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. 

  

	17)	 This Sponsor 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 Sponsor 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 Sponsor Agreement a provision as similar in terms to such invalid or unenforceable provision as may be possible and be valid and enforceable. 

 

	18)	 This Sponsor Agreement, and all Actions or causes of action based upon, arising out of, or related to this
Sponsor Agreement or the transactions contemplated hereby, shall be governed by, and construed in accordance with, the internal substantive Laws of the State of Delaware applicable to contracts entered into and to be performed solely within such
state, without giving effect to principles or rules of conflict of laws to the extent such principles or rules would require or permit the application of Laws of another jurisdiction. Any Action based upon, arising out of or related to this Sponsor
Agreement or the transactions contemplated hereby shall be brought in the Delaware Court of Chancery, and if the Delaware Court of Chancery does not have or take jurisdiction over such Action, any other federal or state courts located in the State
of Delaware, and each of the Parties irrevocably submits to the exclusive jurisdiction of each such court in any such Action, waives any objection it may now or hereafter have to personal jurisdiction, venue or to convenience of forum, agrees that
all claims in respect of the Action shall be heard and determined only in any such court, and agrees not to bring any Action arising out of or relating to this Sponsor Agreement or the transactions contemplated hereby in any other court. Nothing
herein contained shall be deemed to affect the right of any Party to serve process in any manner permitted by Law or to commence legal proceedings or otherwise proceed against any other Party in any other jurisdiction, in each case, to enforce
judgments obtained in any Action brought pursuant to this Section 18. EACH OF THE PARTIES HEREBY IRREVOCABLY WAIVES ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY ACTION BASED UPON, ARISING OUT OF OR RELATED TO THIS SPONSOR
AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY. 

  

	19)	 Any notice, consent or request to be given in connection with any of the terms or provisions of this Sponsor
Agreement shall be in writing and shall be sent or given in accordance with the terms of Section 11.02 of the Merger Agreement to the applicable party at its principal place of business. 

  
 5 

	20)	 This Sponsor Agreement shall terminate on the valid termination of the Merger Agreement in accordance with its
terms. In the event of a valid termination of the Merger Agreement in accordance with its terms, this Sponsor Agreement shall be of no force and effect and shall revert to the Prior Letter Agreement. No such termination or reversion shall relieve
the Sponsor, each Insider, SPAC or the Company from any liability resulting from a breach of this Sponsor Agreement occurring prior to such termination or reversion. 

 

	21)	 The Sponsor and each Insider hereby represents and warrants (severally and not jointly as to itself, himself or
herself only) to SPAC and the Company as follows: (i) if such Person is not an individual, it is duly organized, validly existing and in good standing under the laws of the jurisdiction in which it is organized, and such party has all necessary
power and authority to execute, deliver and perform this Sponsor Agreement and consummate the transactions contemplated hereby; (ii) if such Person is an individual, such Person has full legal capacity, right and authority to execute and
deliver this Sponsor Agreement and to perform his or her obligations hereunder; (iii) such Person is not an Israeli resident for Tax purposes; (iv) this Sponsor Agreement has been duly executed and delivered by such Person and, assuming
due authorization, execution and delivery by the other parties to this Sponsor Agreement, this Sponsor Agreement constitutes a legally valid and binding obligation of such Person, enforceable against such Person in accordance with the terms hereof
(subject to the Enforceability Exceptions); (v) the execution and delivery of this Sponsor Agreement by such Person does not, and the performance by such Person of his, her or its obligations hereunder will not, (A) if such Person is not an
individual, conflict with or result in a violation of the organizational documents of such Person, or (B) require any consent or approval that has not been given or other action that has not been taken by any third party (including under any
Contract binding upon such Person or such Person’s Founder Shares or Private Placement Warrants), in each case, to the extent such consent, approval or other action would prevent, enjoin or materially delay the performance by such Person of
his, her or its obligations under this Sponsor Agreement; (vi) there are no Actions pending against such Person or, to the knowledge of such Person, threatened against such Person, before (or, in the case of threatened Actions, that would be
before) any arbitrator or any Governmental Authority, which in any manner challenges or seeks to prevent, enjoin or materially delay the performance by such Person of its, his or her obligations under this Sponsor Agreement; (vii) except for
fees described on Schedule 5.07 of the Merger Agreement, no financial advisor, investment banker, broker, finder or other similar intermediary is entitled to any fee or commission from such Person, SPAC, any of its Subsidiaries or any of their
respective Affiliates in connection with the Merger Agreement or this Sponsor Agreement or any of the respective transactions contemplated thereby and hereby, in each case, based upon any arrangement or agreement made by or, to the knowledge of such
Person, on behalf of such Person, for which SPAC, the Company or any of their respective Affiliates would have any obligations or liabilities of any kind or nature; (viii) such Person has had the opportunity to read the Merger Agreement and
this Sponsor Agreement and has had the opportunity to consult with its tax and legal advisors; (ix) such Person has not entered into, and shall not enter into, any agreement that would restrict, limit or interfere with the performance of such
Person’s obligations hereunder; (x) such Person has good title to all such Founder Shares or Private Placement Warrants, and there exist no Liens or any other limitation or restriction (including, without limitation, any restriction on the
right to vote, sell or otherwise dispose of such Founder Shares or Private Placement Warrants (other than transfer restrictions under the Securities Act)) affecting any such Founder Shares, other than pursuant to (A) this Sponsor Agreement,
(B) the SPAC A&R Certificate of Incorporation, (C) the Merger Agreement, or (D) the Registration Rights Agreement, dated as of January 14, 2021, by and among SPAC and certain security holders; and (xi) none of such
Founder Shares or Private Placement Warrants is subject to any proxy, voting trust or other agreement or arrangement with respect to the voting of such Founder Shares or Private Placement Warrants, except as provided in this Sponsor Agreement.

  
 6 

	22)	 If, and as often as, (a) there are any changes in SPAC, the SPAC Class A Shares, the SPAC
Class B Shares, the SPAC Warrants or any other Equity Securities of SPAC by way of stock split, stock dividend, combination or reclassification, or through merger, consolidation, reorganization, recapitalization or business combination, or by
any other similar means that result in Sponsor acquiring new SPAC Class A Shares, SPAC Class B Shares, SPAC Warrants or any other Equity Securities of SPAC, (b) Sponsor purchases or otherwise acquires beneficial ownership of any
shares of the SPAC Class A Shares, the SPAC Class B Shares, SPAC Warrants or any other Equity Securities of SPAC after the date of this Sponsor Agreement, or (c) Sponsor acquires the right to vote or share in the voting of any shares
of the SPAC Class A Shares, the SPAC Class B Shares, SPAC Warrants or any other Equity Securities of SPAC after the date of this Sponsor Agreement (such shares of the SPAC Class A Shares, the SPAC Class B Shares, SPAC Warrants or
any other Equity Securities of SPAC, collectively the “New Securities”), then, in each case, such New Securities acquired or purchased by Sponsor shall be subject to the terms of this Sponsor Agreement to the same extent as if they
constituted Founder Shares or Private Placement Warrants owned by Sponsor as of the date hereof. Nothing in this Section 22 shall limit restrict or modify any liability or other obligation of SPAC under the Merger
Agreement. 

  

	23)	 Each of the parties hereto agrees to execute and deliver hereafter any further document, agreement or
instrument of assignment, transfer or conveyance as may be necessary or desirable to effectuate the purposes hereof and as may be reasonably requested in writing by another party hereto. 

[signature page follows] 

  
 7 

 
			
	Sincerely,
	
	HEALTHCARE CAPITAL SPONSOR LLC
		
	By:	 	 /s/ David Milch

		 	Name: David Milch
		 	Title: Manager
	
	INSIDERS
	
	 /s/ David Milch

	David Milch
	
	 /s/ William Johns

	William Johns
	
	 /s/ Philip A. Baseil

	Philip A. Baseil
	
	 /s/ Thomas Insel

	Thomas Insel
	
	 /s/ Peter Kash

	Peter Kash
	
	 /s/ Bruce E. Roberts

	Bruce E. Roberts

  

			
	Acknowledged and Agreed:
	
	HEALTHCARE CAPITAL CORP.
		
	By:	 	 /s/ William Johns

		 	Name: William Johns
		 	Title: Chief Executive Officer
	
	Acknowledged and Agreed:
	
	ALPHA TAU MEDICAL LTD.
		
	By:	 	 /s/ Uzi Sofer

		 	Name: Uzi Sofer
		 	Title: Chief Executive Officer

 Schedule A 

Sponsor Ownership of Equity Securities of SPAC 
  

									
	 Sponsor
	  	Founder
Shares	 	  	Private
Placement
Warrants	 
	 Healthcare Capital Sponsor LLC
	  	 	6,875,000	 	  	 	6,800,000	 
		  	  
	  
	 	  	  
	  
	 
	 Total
	  	 	6,875,000	 	  	 	6,800,000	 
		  	  
	  
	 	  	  
	  
	 

 Schedule B 

Part I 
 Forfeited Equity

  

			
	 Founder Shares
	 	 Private Placement Warrants

	1,031,250	 	1,020,000

 Part II 

Redemption Equity 
  

			
	 Founder Shares
	 	 Private Placement Warrants

	1,718,750	 	1,700,000

 Part III 

Conditional Equity 
  

			
	 Company Ordinary Shares
	 	 Company Warrants

	1,375,000	 	1,360,000

 Schedule C 

IRA JoinderEX-10.4

 Exhibit 10.4 

FORM OF SUPPORT AGREEMENT 

This Support Agreement (this “Agreement”) is made as of July 7, 2021 by and among (i) Healthcare
Capital Corp., a Delaware corporation (“SPAC”), (ii) Alpha Tau Medical Ltd., a company organized under the laws of the State of Israel (the “Company”), and (iii) the
undersigned shareholder (“Holder”) of the Company. Any capitalized term used but not defined in this Agreement will have the meaning ascribed to such term in the Merger Agreement. 

WHEREAS, on or about the date hereof, SPAC, the Company, and Archery Merger Sub Inc., a Delaware corporation and a wholly-owned
subsidiary of the Company (“Merger Sub”), have entered into that certain Agreement and Plan of Merger (as amended from time to time in accordance with the terms thereof, the “Merger Agreement”),
pursuant to which Merger Sub will merge with and into SPAC, with SPAC continuing as the surviving entity (the “Merger”), all upon the terms and subject to the conditions set forth in the Merger Agreement and in accordance
with the applicable provisions of the DGCL; and 
 WHEREAS, as a condition to the willingness of SPAC and the Company to enter into
the Merger Agreement, and as an inducement and in consideration therefor, and in view of the valuable consideration to be received by Holder thereunder, and the expenses and efforts to be undertaken by SPAC and the Company to consummate Business
Combination (as defined below), SPAC, the Company and Holder desire to enter into this Agreement in order for Holder to provide certain assurances to SPAC and the Company regarding the manner in which Holder is bound hereunder to vote any shares of
capital stock of the Company which Holder Beneficially Owns (the “Covered Shares”) during the period from and including the date hereof through and including the date on which this Agreement is terminated in accordance with
its terms (the “Voting Period”) and the other matters set forth in this Agreement. 
 NOW, THEREFORE, in
consideration of the premises set forth above, and intending to be legally bound hereby, the parties hereby agree as follows: 
 1.
Covenant to Vote in Favor of the Merger. Holder irrevocably agrees, with respect to all of the Covered Shares: 
 (a) during
the Voting Period, Holder hereby agrees that it, he or she shall (i) vote all Covered Shares Beneficially Owned by it, him or her in favor of the Merger and the other transactions contemplated by the Merger Agreement (collectively, the
“Business Combination”) and each other proposal related to the Business Combination and the Company becoming a public company included on the agenda for the special meeting of the Company Shareholders relating to the Business
Combination, (ii) when such meeting of Company Shareholders is held, appear at such meeting or otherwise cause such Covered Shares to be counted as present thereat for the purpose of establishing a quorum; and (iii) vote (or execute and
return an action by written consent), or cause to be voted at such meeting, or validly execute and return and cause such consent to be granted with respect to, all of such Covered Shares against (1) any Company Alternative Transaction Proposal
or (2) any other action that would reasonably be expected to impede, interfere with, delay, postpone or adversely affect the Merger or any of the other transactions contemplated by the Merger Agreement or result in a breach of any covenant,
representation or warranty or other obligation or agreement of the Company under the Merger Agreement or any other agreement entered into in connection with the Business Combination or result in any of the conditions set forth in Article IX of the
Merger Agreement not being fulfilled, result in a breach of any covenant, representation or warranty or other obligation or agreement of Holder contained in this Agreement or change in any manner the dividend policy or capitalization of, including
the voting rights of, any class of Equity Securities of the Company; 
 (b) not to deposit, except as provided in this Agreement, any Covered
Shares Beneficially Owned by Holder in a voting trust that would not be subject to the terms of this Agreement in respect of such Covered Shares; 

(c) except as contemplated by the Merger Agreement or the Transaction Agreements, make, or in any manner participate in, directly or
indirectly, a “solicitation” of “proxies” or consents (as such terms are used in the rules of the SEC) or powers of attorney or similar rights to vote, or seek to advise or influence any Person with respect to the voting of, any
shares of the Company capital stock in connection with any vote or other action with respect to Business Combination, other than to recommend that stockholders of the Company vote in favor of adoption of the Merger Agreement; and 

(d) to refrain from exercising any dissenters’ rights or rights of appraisal under applicable law at any time with respect to the Business
Combination, the Merger Agreement, and the other Transaction Agreements. 

  
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 2. Transfers. 

(a) Holder agrees that until the earlier of the consummation of the Closing or the valid termination of the Merger Agreement in accordance with
its terms it shall not, and shall cause its Affiliates not to, without SPAC’s prior written consent, (i) Transfer any or all of the Covered Shares; (ii) grant any proxies or powers of attorney with respect to any or all of the Covered
Shares; or (iii) take any action that would have the effect of preventing, impeding, interfering with or adversely affecting Holder’s ability to perform its obligations under this Agreement. The Company hereby agrees that it shall not
permit any Transfer of the Covered Shares in violation of this Agreement. 
 (b) In the event the Business Combination is consummated, Holder
shall not Transfer any Equity Securities of the Company Beneficially Owned by it, him or her immediately following the Effective Time (such Equity Securities, the “Shareholder Lock-Up
Securities” and such obligation not to Transfer, the “Shareholder Lock-up”) during the period commencing on the Closing Date and continuing through the date that is 180 days after the
Closing Date. Notwithstanding the foregoing, if, subsequent to the Effective Time, the volume-weighted average price of Company Ordinary Shares on NASDAQ (or the U.S. exchange on which the Company Ordinary Shares are then listed) exceeds $12.00 per
share (as adjusted for share sub-divisions, share capitalizations, reorganizations, recapitalizations and the like recapitalization) for any 20 trading days within any
30-trading day period commencing at least 150 days after the Closing Date, the Shareholder Lock-Up Securities shall be released from the Shareholder Lock-up. 
 (c) Notwithstanding the provisions set forth in Sections 2(a) or 2(b), Transfers
of the Covered Shares or other Equity Securities of the Company and that are held by Holder or any of his, her or its permitted transferees (that have complied with this Section 2(c)), are permitted (i) in the case of
an entity, to any officer, director or affiliate of Holder; (ii) in the case of an individual, by gift to a member of such individual’s immediate family or to a trust, the beneficiary of which is a member of such individual’s
immediate family, an affiliate of such individual or to a charitable organization; or (iii) in the case of an individual, by virtue of laws of descent and distribution upon death of such individual; provided, however, that in the case of
clauses (i) through (iii), such permitted transferees must, before any such Transfer is effected, enter into a written agreement with SPAC (if prior to the Effective Time) and the Company agreeing to be bound by this Agreement (including the
provisions relating to voting and transfer restrictions). 
 (d) Holder agrees during the Voting Period to not take or agree or commit to
take any action that would make any representation and warranty of Holder contained in this Agreement inaccurate in any material respect. 

(e) Publicity. Holder shall not issue any press release or otherwise make any public statements with respect to Business Combination or
the transactions contemplated herein without the prior written approval of the Company. Holder hereby authorizes the Company and SPAC to publish and disclose in any announcement or disclosure to the extent required by the SEC, Nasdaq or the
Registration Statement or otherwise pursuant to applicable Law (including all documents and schedules filed with the SEC in connection with the foregoing), Holder’s identity and ownership of the Covered Shares and the nature of Holder’s
commitments and agreements under this Agreement, the Merger Agreement and any other Transaction Documents. 
 3. Representations and
Warranties of Holder. Holder hereby represents and warrants to SPAC and the Company as follows: 
 (a) (i) if Holder is not an
individual, it is duly organized, validly existing and in good standing under the laws of the jurisdiction in which it is organized, and such party has all necessary power and authority to execute, deliver and perform this Agreement and consummate
the transactions contemplated hereby; (ii) if Holder is an individual, Holder has full legal capacity, right and authority to execute and deliver this Agreement and to perform his or her obligations hereunder; 

(b) this Agreement has been duly executed and delivered by Holder and, assuming due authorization, execution and delivery by the other parties
to this Agreement, this Agreement constitutes a legally valid and binding obligation of Holder, enforceable against Holder in accordance with the terms hereof (subject to the Enforceability Exceptions); 

  
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 (c) the execution and delivery of this Agreement by Holder does not, and the performance by
Holder of his, her or its obligations hereunder will not, (i) if Holder is not an individual, conflict with or result in a violation of the organizational documents of Holder, or (ii) require any consent or approval that has not been given
or other action that has not been taken by any third party (including under any Contract binding upon Holder or the Covered Shares), in each case, to the extent such consent, approval or other action would prevent, enjoin or materially delay the
performance by Holder of his, her or its obligations under this Agreement; 
 (d) there are no Actions pending against Holder or, to the
knowledge of Holder, threatened against Holder, before (or, in the case of threatened Actions, that would be before) any arbitrator or any Governmental Authority, which in any manner challenges or seeks to prevent, enjoin or materially delay the
performance by Holder of its, his or her obligations under this Agreement; 
 (e) Holder has not entered into, and shall not enter into, any
agreement that would restrict, limit or interfere with the performance of Holder’s obligations hereunder; and 
 (f) the Covered Shares
are the only shares of capital stock of the Company owned of record or Beneficially Owned by Holder as of the date hereof, and none of such Covered Shares is subject to any proxy, voting trust or other agreement or arrangement with respect to the
voting of such Covered Shares, except as provided in this Agreement or the organizational documents of the Company. 
 4. New
Securities. If, and as often as, (a) there are any changes in the Company or the Equity Securities of the Company by way of stock split, stock dividend, combination or reclassification, or through merger, consolidation, reorganization,
recapitalization or business combination, or by any other similar means that result in Holder acquiring new Equity Securities of the Company, (b) Holder purchases or otherwise acquires beneficial ownership of any Equity Securities of the
Company after the date of this Agreement, or (c) Holder acquires the right to vote or share in the voting of any Equity Securities of the Company after the date of this Agreement (such other Equity Securities of the Company, collectively the
“New Securities”), then, in each case, such New Securities acquired or purchased by Holder shall be subject to the terms of this Agreement to the same extent as if they constituted Covered Securities owned by Holder as of the
date hereof. For the avoidance of doubt, this Section 4 shall not apply to any Equity Securities of the Company acquired after the Closing or pursuant to any PIPE Financing. 

5. To the extent applicable to such Holder, each Holder hereby irrevocably waives and agrees not to exercise any rights he, she or it may have
in connection with the Business Combination (including the issuance of shares by the Company in the context of the PIPE Financing) or the execution of the Merger Agreement pursuant to Article 14 (Pre-emptive
Rights) of the currently effective Articles of Association of the Company. 
 6. Miscellaneous. 

(a) Entire Agreement; Amendment; Waiver. This Agreement and the other agreements referenced herein constitute the entire agreement and
understanding of the parties hereto in respect of the subject matter hereof and supersede 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, including, without limitation, with respect to Holder. This Agreement may not be changed, amended, modified or waived as to any particular provision, except by a written instrument executed by
SPAC, the Company and the other parties charged with such change, amendment, modification or waiver, it being acknowledged and agreed that the Company’s execution of such an instrument will not be required after any valid termination of the
Merger Agreement. 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 
 (b) Assignment; Binding Effect. No
party hereto may assign either this Agreement or any of its rights, interests or obligations hereunder, other than in conjunction with Transfers expressly permitted by Section 2 (and subject to the terms thereof), without
the prior written consent of the other parties. Any purported assignment in violation of this Section 5(b) shall be void and ineffectual and shall not operate to transfer or assign any interest or title to the purported
assignee. This Agreement shall be binding on Holder, SPAC and the Company and their respective successors, heirs and permitted assigns or transferees. 

(c) No Third Party Beneficiaries. Nothing in this Agreement shall be construed to confer upon, or give to, any Person other than the
parties hereto any right, remedy or claim under or by reason of this Agreement or of any covenant, condition, stipulation, promise or agreement hereof. All covenants, conditions, stipulations, promises and agreements contained in this Agreement
shall be for the sole and exclusive benefit of the parties hereto and their successors, heirs, personal representatives and permitted assigns or transferees. 

  
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 (d) Severability. This 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 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 Agreement a provision as similar in terms to such invalid or unenforceable provision as may be possible and be valid and enforceable. 

(e) Governing Law; Jurisdiction; Waiver of Jury Trial. All Actions or causes of action based upon, arising out of, or related to this
Agreement or the transactions contemplated hereby, shall be governed by, and construed in accordance with, the internal substantive Laws of the State of Delaware applicable to contracts entered into and to be performed solely within such state,
without giving effect to principles or rules of conflict of laws to the extent such principles or rules would require or permit the application of Laws of another jurisdiction. Any Action based upon, arising out of or related to this Agreement or
the transactions contemplated hereby shall be brought in the Delaware Court of Chancery, and if the Delaware Court of Chancery does not have or take jurisdiction over such Action, any other federal or state courts located in the State of Delaware,
and each of the Parties irrevocably submits to the exclusive jurisdiction of each such court in any such Action, waives any objection it may now or hereafter have to personal jurisdiction, venue or to convenience of forum, agrees that all claims in
respect of the Action shall be heard and determined only in any such court, and agrees not to bring any Action arising out of or relating to this Agreement or the transactions contemplated hereby in any other court. Nothing herein contained shall be
deemed to affect the right of any Party to serve process in any manner permitted by Law or to commence legal proceedings or otherwise proceed against any other Party in any other jurisdiction, in each case, to enforce judgments obtained in any
Action brought pursuant to this Section 5(e). EACH OF THE PARTIES HEREBY IRREVOCABLY WAIVES ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY ACTION BASED UPON, ARISING OUT OF OR RELATED TO THIS AGREEMENT OR THE TRANSACTIONS
CONTEMPLATED HEREBY. 
 (f) Notices. 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 or given in accordance with the terms of Section 11.02 of the Merger Agreement to the applicable party at its principal place of business. 

(g) Termination. This Agreement shall terminate on the valid termination of the Merger Agreement in accordance with its terms. In the
event of a valid termination of the Merger Agreement in accordance with its terms, this Agreement shall be of no force and effect. No such termination or reversion shall relieve Holder, SPAC or the Company from any liability resulting from a breach
of this Agreement occurring prior to such termination. 
 (h) Remedies. Holder hereby agrees and acknowledges that SPAC and the
Company, would be irreparably injured in the event of a breach by Holder of its, his or her obligations under Section 1 or Section 2, as applicable, of this Agreement. Further, monetary damages
would not be an adequate remedy for any breach described in the foregoing sentence and the non-breaching party shall be entitled to an injunction, specific performance or other equitable relief, in addition to
any other remedy that such party may have in law or in equity, in the event of any such breach (without providing any bond or other security in connection with any such remedy). Holder hereby agrees that it will not allege, and hereby waives the
defense, that SPAC or the Company, has an adequate remedy at law or that an award of specific performance is not an appropriate remedy for any reason at law or equity. 

(i) Definitions. As used herein, (i) “Beneficially Own” has the meaning ascribed to it in Section 13(d) of the
Securities Exchange Act; (ii) “Transfer” means 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, in each case, directly or indirectly, or establishment or increase of a put equivalent position or liquidation with respect to or decrease of a call equivalent position within the meaning of Section 16 of the Exchange Act and the rules and
regulations of the SEC 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, or interest in, 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). 

(j) Interpretation. 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 shall include the corresponding masculine, feminine or neuter forms, and the singular

  
 4 

 
form of nouns, pronouns and verbs shall include the plural and vice versa; (ii) the term “including” (and with correlative meaning “include”) shall be deemed in each case
to be followed by the words “without limitation”; (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; and (iv) the term “or” means “and/or”. The parties have participated jointly in the negotiation and drafting of this Agreement. Consequently, in the event an
ambiguity or question of intent or interpretation arises, this Agreement shall be construed as if drafted jointly by the parties hereto, and no presumption or burden of proof shall arise favoring or disfavoring any party by virtue of the authorship
of any provision of this Agreement. 
 (k) Further Assurances. Each of the parties hereto agrees to execute and deliver hereafter any
further document, agreement or instrument of assignment, transfer or conveyance as may be necessary or desirable to effectuate the purposes hereof and as may be reasonably requested in writing by another party hereto. 

(l) Counterparts; Facsimile. This Agreement may also be executed and delivered by facsimile or electronic signature or by email in
portable document format in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument. 

[Remainder of Page Intentionally Left Blank; Signature Page Follows] 

 

  
 5 

 IN WITNESS WHEREOF, the parties have executed this Support Agreement as of the date
first written above. 
  

			
	The Purchaser:
	
	HEALTHCARE CAPITAL CORP.
		
	By:	 	 /s/ William Johns

	Name:	 	William Johns
	Title:	 	Chief Executive Officer
	
	The Company:
	
	ALPHA TAU MEDICAL LTD.
		
	By:	 	 /s/ Uzi Sofer

	Name: Uzi Sofer
	Title: Chief Executive Officer

 {Signature Page to Shareholder Support Agreement} 

 Holder: 
  

	
	By:                                     
                                         
           
	Name:

  

	
	Number and Type of Covered Shares:
	
	__________ Company Ordinary Shares
	__________ Company Preferred A Shares
	__________ Company Preferred B Shares

  

	
	Address for Notice:

  

	
	Address:                                     
                                         
  
	  

  

	
	Facsimile
No.:                                        
                             
	Telephone
No.:                                        
                           
	Email:                                     
                                         
     :

 {Signature Page to Shareholder Support Agreement}

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