Document:

EX-4.7

 Exhibit 4.7 

Execution Version 
 CA Healthcare
Acquisition Corp. 
 99 Summer Street 
 Suite 200 

Boston, MA 02110 
 April 6, 2021 

Re: Amended and Restated Sponsor Agreement 
 Ladies and
Gentlemen: 
 This letter (this “Sponsor Agreement”) is being delivered to you in connection with that certain Agreement
and Plan of Merger, dated as of the date hereof (the “Merger Agreement”), by and among LumiraDx Limited, a Cayman Islands exempted company limited by shares with company number 314391 (“LumiraDx”), LumiraDx Merger
Sub, Inc., a Delaware corporation and a wholly-owned subsidiary of LumiraDx (“Merger Sub”, and collectively with LumiraDx, the “Company”), and CA Healthcare Acquisition Corp., a Delaware corporation
(“CAH”), and hereby amends and restates in its entirety that certain letter, dated January 25, 2021, from CA Healthcare Sponsor LLC (the “Sponsor”) and each of the undersigned individuals, each of whom is a
member of CAH’s board of directors and/or management team (each, an “Insider” and collectively, the “Insiders”) to CAH (the “Prior Letter Agreement”). Certain capitalized terms used herein are
defined in paragraph 11 hereof. Capitalized terms used but not otherwise defined herein shall have the respective meanings ascribed to such terms in the Merger Agreement. 

In order to induce the Company and CAH to enter into the Merger Agreement and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, Sponsor and each of the Insiders, hereby severally (and not jointly and severally) agrees with CAH and, at all times prior to any valid termination of the Merger Agreement, the Company as follows: 

1. The Sponsor and each Insider hereby unconditionally and irrevocably agrees: (i) that at any duly called meeting of the stockholders of
CAH (or any adjournment or postponement thereof), and in any action by written consent of the stockholders of CAH requested by CAH’s board of directors or undertaken in furtherance of the transactions contemplated by the Merger Agreement (the
“Transactions”), the Sponsor and each such Insider shall, if a meeting is held, appear at the meeting, in person or by proxy, or otherwise cause all of its, his or her Shares to be counted as present thereat for purposes of
establishing a quorum, and it shall vote or consent (or cause to be voted or consented), in person or by proxy, all of its, his or her Shares (a) in favor of the adoption of the Merger Agreement and approval of the Transactions (and any actions
required in furtherance thereof), (b) against any action, proposal, transaction or agreement that would reasonably be expected to result in a breach of any representation, warranty, covenant, obligation or agreement of CAH contained in the Merger
Agreement, (c) in favor of any other proposals set forth in CAH’s proxy statement to be filed by CAH with the SEC relating to the Transactions (including any proxy supplements thereto, the “Proxy Statement”) and
(d) except as set forth in the Proxy Statement, against the following actions or proposals: (I) any CAH Alternative Transaction or any proposal in opposition to approval of the Merger Agreement or in competition with or inconsistent with
the Merger Agreement; and (II)(A) any change in the present capitalization of CAH or any amendment of the Charter (as defined below), except to the extent expressly contemplated by the Merger Agreement, (B) any liquidation, dissolution or
other change in CAH’s corporate structure or business, (C) any action, proposal, transaction or agreement that would result in a breach in any material respect of any covenant, representation or warranty or other obligation or agreement of
the Sponsor or such Insider under this Sponsor Agreement, 
  

 or (D) any other action or proposal involving CAH or any of its subsidiaries that is intended, or would
reasonably be expected, to prevent, impede, interfere with, delay, postpone or adversely affect the Transactions and (ii) not to redeem, elect to redeem or tender or submit any of the Shares owned by it, him or her for redemption in connection
with such stockholder approval or proposed Business Combination, or in connection with any vote to amend the Charter. Prior to any valid termination of the Merger Agreement, (x) the Sponsor and each Insider shall take, or cause to be taken, all
actions and to do, or cause to be done, all things reasonably necessary under applicable Laws to consummate the Transactions and the other transactions contemplated by the Merger Agreement and on the terms and subject to the conditions set forth
therein, and (y) the Sponsor and each Insider shall be bound by and comply with Sections 6.3 (Access to Information; Confidentiality) and 6.4 (Exclusivity) of the Merger Agreement (and any relevant definitions contained in any such Sections) as
if such person were a signatory to the Merger Agreement with respect to such provisions. If CAH seeks to consummate a proposed Business Combination by engaging in a tender offer, the Sponsor and each Insider agrees that it, he or she will not sell
or tender any Shares owned by it, him or her in connection therewith. The obligations of the Sponsor and the Insiders specified in this paragraph 1 shall apply whether or not the Merger, any of the Transactions or any action described above is
recommended by CAH’s board of directors. 
 2. The Sponsor and each Insider hereby agrees that in the event that CAH fails to consummate
a Business Combination within 24 months from the closing of the Public Offering (the “Completion Window”), or such later period approved by CAH’s stockholders in accordance with CAH’s amended and restated certificate
of incorporation (the “Charter”), the Sponsor and each Insider shall take all reasonable steps to cause CAH to (a) cease all operations except for the purpose of winding up, (b) as promptly as reasonably possible but not
more than 10 Business Days thereafter, subject to lawfully available funds therefor, redeem 100% of the Common Stock sold as part of the Units in the Public Offering (the “Offering Shares”), at a
per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account (as defined below), including interest earned on the funds held in the Trust Account and not previously
released to CAH to pay its taxes (less up to $100,000 of interest to pay dissolution expenses), divided by the number of then outstanding Offering Shares, which redemption will completely extinguish all Public Stockholders’ rights as
stockholders (including the right to receive further liquidation distributions, if any), subject to applicable law, and (c) as promptly as reasonably possible following such redemption, subject to the approval of CAH’s remaining
stockholders and CAH’s board of directors, dissolve and liquidate, subject in each case to CAH’s obligations under Delaware law to provide for claims of creditors and other requirements of applicable law. The Sponsor and each Insider
agrees not to propose any amendment to the Charter to modify (i) the substance or timing of the ability of holders of Offering Shares to seek redemption in connection with a Business Combination, (ii) certain amendments to the Charter
prior to the completion of a Business Combination or (iii) (A) CAH’s obligation to redeem 100% of the Offering Shares if CAH does not complete a Business Combination within the Completion Window or (B) any other provisions
relating to stockholders’ rights or pre-initial Business Combination activity, unless CAH provides the Public Stockholders with the opportunity to redeem their shares of Common Stock upon approval of any
such amendment at a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account, including interest earned on the funds held in the Trust Account and not previously
released to CAH to pay its taxes, divided by the number of then outstanding Offering Shares. 
 The Sponsor and each Insider acknowledges
that it, he or she has no right, title, interest or claim of any kind in or to any monies held in the Trust Account or any other asset of CAH as a result of any liquidation of CAH with respect to the Founder Shares held by it, him or her. The
Sponsor and each Insider hereby further waive, with respect to any shares of Common Stock held by it, him or her, if any, whether acquired now or hereafter, any redemption rights it, he or she may have in connection with the consummation of a
Business Combination, including, without limitation, any such rights available in the context of a stockholder vote to approve such Business Combination or a stockholder vote to approve an 

  
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amendment to the Charter to modify (I) the substance or timing of the ability of holders of Offering Shares to seek redemption in connection with a Business Combination or
(II) (A) CAH’s obligation to redeem 100% of the Offering Shares if CAH does not complete a Business Combination within the Completion Window or (B) any other provisions relating to stockholders’ rights or pre-initial Business Combination activity, unless CAH provides the Public Stockholders with the opportunity to redeem their shares of Common Stock upon approval of any such amendment at a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account, including interest earned on the funds held in the Trust Account and not previously released to CAH to pay its
taxes, divided by the number of then outstanding Offering Shares, or (III) in the context of a tender offer made by CAH to purchase shares of Common Stock (although the Sponsor, the Insiders and their respective affiliates shall be entitled to
redemption and liquidation rights with respect to any Offering Shares it or they hold if CAH fails to consummate a Business Combination within the time period set forth in the Charter). 

3. Without limiting their obligations under paragraph 6 below, during the period commencing on the date hereof and ending on the earlier of
(a) the valid termination of the Merger Agreement or (b) the Closing, the Sponsor and each Insider shall not, without the prior written consent of the Company, Transfer any Units, shares of Capital Stock, warrants (each, a
“Warrant”) to purchase Capital Stock or any securities convertible into, or exercisable, or exchangeable for, shares of Capital Stock owned by it, him or her. In the event that (i) any shares of Capital Stock, Warrants or other
equity securities of CAH are issued to the Sponsor or any Insider after the date hereof pursuant to any stock dividend, stock split, recapitalization, reclassification, combination or exchange of shares of Capital Stock of, on or affecting the
shares of Capital Stock owned by the Sponsor or any Insider or otherwise, (ii) the Sponsor or any Insider purchases or otherwise acquires beneficial ownership of any shares of Capital Stock, Warrants or other equity securities of CAH after the
date hereof or (iii) the Sponsor or any Insider acquires the right to vote or share in the voting of any shares of Capital Stock, Warrants or other equity securities of CAH after the date hereof (such shares of Capital Stock, Warrants or other
equity securities of CAH described in clauses (i), (ii) and (iii), the “New Shares”), then such New Shares acquired or purchased by the Sponsor or any Insider shall be subject to the terms of this paragraph 3 and paragraph 1
above to the same extent as if they constituted the Capital Stock or Warrants owned by the Sponsor or any Insider as of the date hereof. 

4. In the event of the liquidation of the Trust Account upon the failure of CAH to consummate its initial Business Combination within the time
period set forth in the Charter, the Sponsor (the “Indemnitor”) agrees to indemnify and hold harmless CAH against any and all loss, liability, claim, damage and expense whatsoever (including, but not limited to, any and all legal or
other expenses reasonably incurred in investigating, preparing or defending against any litigation, whether pending or threatened) to which CAH may become subject as a result of any claim by (i) any third party for services rendered or products
sold to CAH or (ii) any prospective target business with which CAH has entered into a written letter of intent, confidentiality or other similar agreement for a Business Combination (a “Target”); provided, however, that such
indemnification of CAH by the Indemnitor shall (x) apply only to the extent necessary to ensure that such claims by a third party or a Target do not reduce the amount of funds in the Trust Account to below the lesser of (i) $10.00 per
Offering Share and (ii) the actual amount per Offering Share held in the Trust Account as of the date of the liquidation of the Trust Account, if less than $10.00 per Offering Share is then held in the Trust Account due to reductions in the
value of the trust assets, less interest earned on the Trust Account which may be withdrawn to pay taxes, (y) not apply to any claims by a third party or a Target which executed a waiver of any and all rights to the monies held in the Trust
Account (whether or not such waiver is enforceable) and (z) not apply to any claims under CAH’s indemnity of the underwriters against certain liabilities, including liabilities under the Securities Act of 1933, as amended. The Indemnitor
shall have the right to defend against any such claim with counsel of its choice reasonably satisfactory to CAH if, within 15 days following written receipt of notice of the claim to the Indemnitor, the Indemnitor notifies CAH in writing that
it shall undertake such defense. 

  
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 5. The Sponsor and each Insider hereby agrees and acknowledges that: (i) CAH and, prior
to any valid termination of the Merger Agreement, the Company would be irreparably injured in the event of a breach by such Sponsor or an Insider of its, his or her obligations under paragraphs 1, 2, 3, 4, 6(a), 6(b), 6(c), 6(d), 6(e) and 11, as
applicable, of this Sponsor Agreement, (ii) monetary damages may not be an adequate remedy for such breach and (iii) the non-breaching party shall be entitled to injunctive relief, in addition to any
other remedy that such party may have in law or in equity, in the event of such breach. 
 6. 

(a) The Sponsor and each Insider agrees that it, he or she shall not Transfer, other than as provided for in Article 6.13 of the Company
Articles, (i) any Founder Shares (or shares of Common Stock issuable upon conversion thereof) or (ii) any common shares of the Company issued in respect of Forfeited Founder Shares, until the earlier of (A) one year after the
completion of CAH’s initial Business Combination (if the Closing does not occur for any reason (including, without limitation, as a result of the valid termination of the Merger Agreement)) or the Closing, as applicable, or (B) subsequent
to the initial Business Combination (if the Closing does not occur for any reason (including, without limitation, as a result of the valid termination of the Merger Agreement)) (x) if the last reported sale price of the Common Stock equals or
exceeds $12.00 per share (as adjusted for share splits, share dividends, reorganizations, recapitalizations and the like) for any 20 trading days within any 30-trading day period commencing at least
150 days after CAH’s initial Business Combination (if the Closing does not occur for any reason (including, without limitation, as a result of the valid termination of the Merger Agreement)), or (y) (other than if the Closing occurs)
the date on which CAH completes a liquidation, merger, share exchange, reorganization or other similar transaction that results in all of CAH’s stockholders having the right to exchange their shares for cash, securities or other property (the
“Founder Shares Lock-up Period”). 
 (b) In the event that the Closing does not
occur for any reason (including, without limitation, as a result of the valid termination of the Merger Agreement), the Sponsor and each Insider agrees that it, he or she shall not Transfer any Private Placement Warrants (or shares of Common Stock
issued or issuable upon the exercise of the Private Placement Warrants) until 30 days after the completion of a Business Combination (the “Private Placement Warrants Lock-up Period”, and
together with the Founder Shares Lock-up Period, the “Lock-up Periods”). 

(c) Notwithstanding the provisions set forth in paragraphs 3 and 6(a) and (b), (i) upon the valid termination of the Merger Agreement, the
following Transfers of the Founder Shares, the Private Placement Warrants and shares of Common Stock issued or issuable upon the exercise or conversion of the Private Placement Warrants or the Founder Shares that are held by the Sponsor, any Insider
or any of their permitted transferees (that have complied with this paragraph 6(c)), are permitted: (A) to CAH’s officers or directors, any affiliates or family members of any of CAH’s officers or directors, any members of the
Sponsor, or any affiliates of the Sponsor; (B) in the case of an individual, transfers by gift to a member of the individual’s immediate family, to a trust, the beneficiary of which is a member of the individual’s immediate family or
an affiliate of such person, or to a charitable organization; (C) in the case of an individual, transfers by virtue of laws of descent and distribution upon death of the individual; (D) in the case of an individual, transfers pursuant to a
qualified domestic relations order; (E) transfers by private sales or transfers made in connection with the consummation of a Business Combination at prices no greater than the price at which the securities were originally purchased;
(F) transfers in the event of CAH’s liquidation prior to the completion of an initial Business Combination; (G) transfers by virtue of the laws of the State of Delaware or the Sponsor’s limited liability company agreement upon
dissolution of the Sponsor; (H) in the event of CAH’s completion of a liquidation, merger, stock exchange, reorganization or other similar transaction which results in all of the Public Stockholders having the right to exchange their
shares of Common Stock for cash, securities or other property subsequent to the completion of the initial Business Combination; (I) to a nominee or custodian of a person or entity to whom a disposition or

  
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transfer would be permissible under clauses (A) through (H) above; provided, however, that in the case of clauses (A) through (E) and (I), these permitted
transferees must enter into a written agreement with CAH agreeing to be bound by the transfer restrictions herein and the other restrictions contained in this Sponsor Agreement (including provisions relating to voting, the Trust Account and
liquidating distributions) and (ii) during the period commencing on the date hereof and ending on the earlier of (x) the expiration of the Lock-up Periods and (y) the date of any valid
termination of the Merger Agreement, the following Transfers of the Founder Shares, the Private Placement Warrants identified on Annex A as “Locked-Up Warrants”, shares of Common Stock issued
or issuable upon the exercise or conversion of the Private Placement Warrants identified on Annex A as “Locked-Up Warrants” or the Founder Shares, that are held by the Sponsor or any Insider
or any of their permitted transferees (that have complied with this paragraph 6(c)), are permitted; (1) to CAH’s officers or directors, any affiliates or family members of any of CAH’s officers or directors, any member of the Sponsor,
or any affiliates of the Sponsor; (2) in the case of an individual, transfers by gift to a member of one of the individual’s immediate family, to a trust, the beneficiary of which is a member of the individual’s immediate family or an
affiliate of such person, or to a charitable organization; (3) in the case of an individual, transfers by virtue of laws of descent and distribution upon death of such person; (4) in the case of an individual, transfers pursuant to a
qualified domestic relations order; provided, however, that any permitted transferee must enter into a written agreement with CAH agreeing to be bound by the transfer restrictions herein and the other restrictions contained in this
Sponsor Agreement (including provisions relating to voting, the Trust Account and liquidating distributions). 
 (d) Conversion and
Exchange. As of and conditioned upon the Closing, the Sponsor agrees that all of its Private Placement Warrants shall be converted and exchanged for 405,000 common shares of the Company (the “Warrant Conversion Shares”). The
Sponsor and each Insider agrees that it, he or she shall not Transfer, other than as provided for in Article 6.13 of the Company Articles, any Warrant Conversion Shares until the six month anniversary of the Closing. 

(e) Sponsor Equity Cancellation. In the event that more than fifty percent (50%) of the Class A Common Stock sold in the Public
Offering is redeemed, then an equal percentage of the Founder Shares shall be cancelled prior to giving effect to the CAH Class B Conversion (the “Forfeited Founder Shares”) and accordingly the Company shall have no obligation
under this Sponsor Agreement, the Merger Agreement or any other agreement relating to the Transactions to issue any common shares of the Company in respect of such Forfeited Founder Shares; provided however that for the period from the Closing Date
and up to 31 December 2021 the Company, in its sole discretion, may elect to issue, on the same terms as provided for in the Merger Agreement, common shares of the Company in respect of some or all of the Forfeited Founder Shares to the
Sponsor. For the avoidance of doubt, in the event that fifty percent (50%) or less of the Class A Common Stock sold in the Public Offering is redeemed, no such forfeiture shall occur and the Sponsor shall retain one hundred percent (100%) of
its Founder Shares and be issued one hundred percent (100%) of its entitlement to common shares of the Company pursuant to the terms of the Merger Agreement. By way of illustrative example if 60% of the Class A Common Stock sold in the Public
Offering is redeemed, then the Sponsor shall only receive 1,150,000 common shares in the Company (as adjusted for share splits, share dividends, reorganizations, recapitalizations and the like). 

7. The Sponsor and each Insider represents and warrants that it, he or she has never been suspended or expelled from membership in any
securities or commodities exchange or association or had a securities or commodities license or registration denied, suspended or revoked. Each Insider’s biographical information furnished to CAH (including any such information included in the
Prospectus) is true and accurate in all respects and does not omit any material information with respect to the Insider’s background. Each Insider’s questionnaire furnished to CAH is true and accurate in all respects. Each Insider
represents and warrants that: (i) it, he or she is not subject to or a respondent in any legal action for, any injunction, cease-and-desist order or order or
stipulation to desist or refrain from any act or practice 

  
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relating to the offering of securities in any jurisdiction; (ii) it, he or she has never been convicted of, or pleaded guilty to, any crime (A) involving fraud, (B) relating to any
financial transaction or handling of funds of another person, or (C) pertaining to any dealings in any securities and it, he or she is not currently a defendant in any such criminal proceeding. 

8. Except as disclosed in the Prospectus, neither the Sponsor nor any officer, director, advisor or any affiliate of the Sponsor or officer,
director or advisor of CAH, shall receive from CAH any finder’s fee, reimbursement, consulting fee, monies in respect of any repayment of a loan or other compensation prior to, or in connection with any services rendered in order to effectuate,
the consummation of the CAH’s initial Business Combination (regardless of the type of transaction that it is). 
 9. Each Insider agrees
that, until the consummation of the Business Combination and for one year thereafter, he or she will keep confidential all confidential, proprietary and non-public information of CAH (whether written, oral or
electronic communications), including without limitation, the names of the targets identified by CAH for a potential Business Combination and any and all information provided by CAH to the Insider regarding such targets. 

10. The Sponsor and each Insider has full right and power, without violating any agreement to which it is bound (including, without limitation,
any non-competition or non-solicitation agreement with any employer or former employer), to enter into this Sponsor Agreement and, as applicable, to serve as an officer
and/or a director on the board of directors of CAH. 
 11. As used herein, the following terms shall have the respective meanings set forth
below: 
 (a) “Business Combination” shall mean a merger, capital stock exchange, asset acquisition, stock purchase,
reorganization or similar business combination, involving CAH and one or more businesses; 
 (b) “Capital Stock” shall mean,
collectively, the Common Stock and the Founder Shares; 
 (c) “Common Stock” shall mean, collectively, the CAH Class A
Common Stock and the CAH Class B Common Stock. 
 (d) “Commission” shall mean the U.S. Securities and Exchange
Commission; 
 (e) “Company Articles” shall mean the amended and restated memorandum of association and articles of
association of the Company to be adopted immediately following the Closing; 
 (f) “Exchange Act” shall mean the Securities
Exchange Act of 1934, as amended; 
 (g) “Founder Shares” shall mean, at any time prior to the Closing, (a) the
2,875,000 shares of CAH’s Class B Common Stock, par value $0.0001 per share, held by the Sponsor and (b) at any time following the Closing, the common shares of the Company received by the Sponsor in the Merger in exchange for the
shares referenced in clause (a); 
 (h) “Private Placement Warrants” shall mean the Warrants to purchase up to 4,050,000
shares of CAH Class A Common Stock beneficially held by the Sponsor; 
 (i) “Prospectus” shall mean the registration
statement on Form S-1 and prospectus filed by CAH with the Commission in connection with the Public Offering; 

  
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 (j) “Public Offering” shall mean the underwritten initial public offering
of 11,500,000 of CAH’s units (the “Units”), each comprised of one CAH’s Class A Common Stock, and one-half (1/2) of one redeemable Warrant; 

(k) “Public Stockholders” shall mean the holders of securities issued in the Public Offering; 

(l) “Shares” shall mean, collectively, the Common Stock and the Founder Shares; 

(m) “Transfer” shall mean the (a) sale of, offer to sell, contract or agreement to sell, hypothecate, pledge, encumber,
grant of any lien or option to purchase or otherwise dispose of or agreement to dispose of, directly or indirectly, or establishment or increase of a put equivalent position or liquidation with respect to or decrease of a call equivalent position
within the meaning of Section 16 of the Exchange Act, and the rules and regulations of the Commission promulgated thereunder with respect to, any security, (b) entry into any swap or other arrangement that transfers to another, in whole or
in part, any of the economic consequences of ownership of any security, whether any such transaction is to be settled by delivery of such securities, in cash or otherwise, or (c) public announcement of any intention to effect any transaction
specified in clause (a) or (b); 
 (n) “Trust Account” shall mean the trust fund into which a portion of the net
proceeds of the Public Offering shall be (or has been) deposited. 
 12. CAH will maintain an insurance policy or policies providing
directors’ and officers’ liability insurance, and each director shall be covered by such policy or policies, in accordance with its or their terms, to the maximum extent of the coverage available for any of CAH’s directors or
officers. 
 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, the Prior Letter Agreement. This Sponsor Agreement may not be changed, amended, modified or waived (other than to correct a typographical error) as to any particular provision, except
by a written instrument executed by all parties hereto and the Company, 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. Except as otherwise provided herein, no party hereto may assign either this Sponsor Agreement or any of its rights, interests, or
obligations hereunder without the prior written consent of the other parties and the Company (except that, following any valid termination of the Merger Agreement, no consent from the Company shall be required). Any purported assignment in violation
of this paragraph 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 CAH, the Sponsor and each Insider and their respective
successors, heirs and assigns and permitted transferees. 
 15. Nothing in this Sponsor Agreement shall be construed to confer upon, or give
to, any person or entity other than the parties hereto any right, remedy or claim under or by reason of this 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 CAH, the Sponsor and the Insiders (and, prior to any valid termination of the Merger Agreement, the Company) and their successors, heirs, personal
representatives and assigns and permitted transferees. Notwithstanding anything herein to the contrary, each of CAH, the Sponsor and each Insider acknowledges and agrees that the Company is an express third party beneficiary of this Agreement and
may directly enforce (including by an action for specific performance, injunctive relief or other equitable relief) each of the provisions set forth in this Sponsor Agreement as though directly party hereto. 

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

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. 
 (a) This Sponsor Agreement
shall be interpreted and construed in accordance with and governed by the law of the State of Delaware without giving effect to the principles of any choice or conflicts of laws rule (whether of the State of Delaware or any other jurisdiction) that
would result in the application of the laws of a different jurisdiction other than the State of Delaware. 
 (b) The parties hereto agree
that any suit, action or proceeding seeking to enforce any provision of, or based on any matter arising out of, relating to, or in connection with, this Sponsor Agreement may be brought against any of the parties in any federal court located in the
State of Delaware or any Delaware state court, and each of the parties hereby consents to the exclusive jurisdiction of such court (and of the appropriate appellate courts) in any such suit, action or proceeding and waives any objection to venue
laid therein. Process in any such suit, action or proceeding may be served on any party anywhere in the world, whether within or without the jurisdiction of any such court. Without limiting the foregoing, each of the parties agrees that service of
process upon such party at the address referred to in Section 9.1 (Notices) of the Merger Agreement, together with written notice of such service to such party, shall be deemed effective service of process upon such party. EACH OF THE PARTIES
ACKNOWLEDGES AND AGREES THAT ANY CONTROVERSY WHICH MAY ARISE UNDER THIS AGREEMENT IS LIKELY TO INVOLVE COMPLICATED AND DIFFICULT ISSUES AND THEREFOR EACH PARTY HERETO HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES TO THE FULLEST EXTENT PERMITTED BY
APPLICABLE LAW ANY AND ALL RIGHT IT MAY HAVE TO TRIAL BY JURY IN ANY LEGAL PROCEEDING ARISING OUT OF, RELATING TO OR IN CONNECTION WITH THIS AGREEMENT. EACH OF THE PARTIES HERETO CERTIFIES AND ACKNOWLEDGES THAT (A) NO REPRESENTATIVE, AGENT OR
ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED EXPRESSLY OR OTHERWISE THAT SUCH OTHER PARTY WOULD NOT IN THE EVENT OF LITIGATION SEEK TO ENFORCE THE FOREGOING WAIVER, (B) EACH SUCH PARTY UNDERSTANDS AND HAS CONSIDERED THE IMPLICATIONS OF THE
WAIVER, (C) EACH SUCH PARTY MAKES THIS WAIVER VOLUNTARILY AND (D) EACH SUCH PARTY HAS BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY AMONG OTHER THINGS THE MUTUAL WAIVERS IN THIS PARAGRAPH 18(b). 

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 by express mail or similar private courier service, by certified mail (return receipt requested), by hand delivery or email transmission to the receiving party’s address or email address set forth above or on the receiving
party’s signature page hereto; provided that any such notice, consent or request to be given to CAH or the Company at any time prior to the valid termination of the Merger Agreement shall be given in accordance with the terms of
Section 9.1 (Notices) of the Merger Agreement. 

  
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 20. This Sponsor Agreement shall terminate on the earlier of (i) termination of the
Merger Agreement pursuant to Article 8 thereof (in which case this Sponsor Agreement shall be of no force or effect and shall revert to the Prior Letter Agreement), (ii) the expiration of the Lock-up Periods,
or (iii) the liquidation of CAH; provided, however, that paragraph 4 and paragraph 9 of this Sponsor Agreement shall survive such liquidation for a period of six years; provided, further, that no such termination (including
one that results in a reversion to the Prior Letter Agreement under clause (i)) shall relieve the Sponsor, any Insider or CAH from any liability resulting from a willful breach of this Sponsor Agreement occurring prior to such termination. 

21. Each of the Sponsor and the Insiders hereby represents and warrants (severally and not jointly as to itself, himself or herself only) to
CAH 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 incorporated, formed, organized or constituted, and the
execution, delivery and performance of this Sponsor Agreement and the consummation of the transactions contemplated hereby are within such person’s corporate, limited liability company or organizational powers and have been duly authorized by
all necessary corporate, limited liability company or organizational actions on the part of such person; (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) 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 (except as enforceability may be limited by bankruptcy Laws, other similar Laws affecting
creditors’ rights and general principles of equity affecting the availability of specific performance and other equitable remedies); (iv) 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, as applicable), in each case, to the extent such
consent, approval or other action would prevent, enjoin or materially delay the performance by such person of its, his or her obligations under this Sponsor Agreement; (v) 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; (vi) except for fees described on Section 4.11 of the CAH Disclosure Schedule or disclosed in the proxy statement/prospectus of the Company, no
financial advisor, investment banker, broker, finder or other similar intermediary is entitled to any fee or commission from such person, CAH, 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 CAH, the Company or
any of their respective affiliates would have any obligations or liabilities of any kind or nature; (vii) 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; (viii) 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; (ix) except as otherwise
described in this Sponsor Agreement, such person has the direct or indirect interest in all of its, his or her Common Stock or Warrants and Founder Shares and Private Placement Warrants, which are held through the Sponsor, the Sponsor has

  
 9 

 
good title to all such Founder Shares and Private Placement Warrants and any Common Stock or Warrants held by the Sponsor, 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 securities (other than transfer restrictions under the Securities Act) affecting any such securities, other than pursuant to (A) this
Sponsor Agreement, (B) the Charter, (C) the Merger Agreement, (D) the Registration Rights Agreement, or (E) any applicable securities laws); (x) the Founder Shares and Private Placement Warrants listed on
Annex A are the only equity securities in CAH (including, without limitation, any equity securities convertible into, or which can be exercised or exchanged for, equity securities of CAH) owned of record or beneficially
owned by such person as of the date hereof and such person has the sole power to dispose of (or sole power to cause the disposition of) and the sole power to vote (or sole power to direct the voting of) such Founder Shares and Private Placement
Warrants and 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; the Sponsor and each Insider hereby agrees to supplement Annex A from time to time to the extent that the Sponsor or any Insider acquires additional securities in CAH; and (xi) such person is
not currently (and at all times through Closing will refrain from being or becoming) a member of a “group” (within the meaning of Section 13(d)(3) or Section 14(d)(2) of the Exchange Act, or any successor provision), including
any group acting for the purpose of acquiring, holding or disposing of equity securities of the Issuer (within the meaning of Rule 13d-5(b)(1) under the Exchange Act). 

22. If, and as often as, there are any changes in CAH, the Common Stock, the Founder Shares or the Private Placement Warrants by way of share
split, share dividend, combination or reclassification, or through merger, consolidation, reorganization, recapitalization or business combination, or by any other means, equitable adjustment shall be made to the provisions of this Sponsor Agreement
as may be required so that the rights, privileges, duties and obligations hereunder shall continue with respect to CAH, CAH’s successor or the surviving entity of such transaction, the Common Stock, the Founder Shares or the Private Placement
Warrants, each as so changed. 
 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] 

  
 10 

 
			
	Sincerely,
	
	SPONSOR:
	
	CA HEALTHCARE SPONSOR LLC
		
	By:	 	 /s/ Tim McMahon

	Name: Tim McMahon
	Title: Managing Member
	
	INSIDERS:
		
	By:	 	 /s/ Larry J. Neiterman

	Name: Larry J. Neiterman
		
	By:	 	 /s/ Jeffrey H. Barnes

	Name: Jeffrey H. Barnes
		
	By:	 	 /s/ David Lang

	Name: David Lang
		
	By:	 	 /s/ David H. Klein

	Name: David H. Klein
		
	By:	 	 /s/ Afsaneh Naimollah

	Name: Afsaneh Naimollah

 [Signature Page to Amended and Restated Sponsor Agreement] 

			
	Acknowledged and Agreed:
	
	CA HEALTHCARE ACQUISITION CORP.
		
	By:	 	 /s/ Larry J. Neiterman

		 	Name: Larry J. Neiterman
		 	Title: Chief Executive Officer

 [Signature Page to Amended and Restated Sponsor Agreement]EX-4.8

 Execution Version 

Exhibit 4.8 
 COMPANY
HOLDERS SUPPORT AGREEMENT 
 This Company Holders Support Agreement (this “Agreement”) is dated as of April 6, 2021
by and between LumiraDx Limited, a Cayman Islands exempted company limited by shares with company number 314391 (the “Company”) and each of the security holders of the Company whose names appear on the signature pages of this
Agreement (each, a “Holder” and collectively, the “Holders”). Capitalized terms used but not defined herein shall have the respective meanings ascribed to such terms in the Agreement and Plan of Merger (the
“Merger Agreement”) dated as of the date hereof by and among the Company, LumiraDx Merger Sub, Inc., a Delaware corporation (“Merger Sub”), and CA Healthcare Acquisition Corp., a Delaware corporation
(“SPAC”). 
 RECITALS 

WHEREAS, as of the date hereof each Holder is the holder of record and the “beneficial owner” (within the meaning of Rule 13d-3 under the Exchange Act) of the number of Company Ordinary Shares, Company Series A Preferred Shares, Company Series B Preferred Shares, Company Common Shares, 2020 Warrants, 5% Convertible Loan Notes or 10%
Convertible Loan Notes (collectively, “Securities”) as set forth on Schedule I attached hereto (collectively, with respect to each Holder, such Holder’s “Owned Securities,” and such Owned Securities,
together with (1) any additional Securities in which such Holder acquires record and beneficial ownership after the date hereof, including (i) by exercise or exchange of securities convertible or exercisable into Securities, (ii) by
purchase, (iii) as a result of a dividend, split, recapitalization, combination, reclassification, exchange or change of such securities issued by the Company or (iv) upon exercise or conversion of any securities and (2) any
additional Securities with respect to which such Holder has the right to vote through a proxy, the “Covered Securities”); 

WHEREAS, contemporaneously with the execution and delivery of this Agreement, the Company, Merger Sub and SPAC have entered into the Merger
Agreement, pursuant to which, among other transactions, Merger Sub will be merged with and into SPAC, with SPAC continuing as the surviving entity and a wholly-owned subsidiary of the Company, on the terms and conditions set forth therein (the
“Merger”); and 
 WHEREAS, the Merger Agreement provides that the Holders will enter into this Agreement concurrently with
the execution and delivery of the Merger Agreement. 
 NOW, THEREFORE, in consideration of the foregoing and the mutual agreements contained
herein, and intending to be legally bound hereby, the parties hereto hereby agree as follows: 
 ARTICLE I 

COMPANY HOLDERS SUPPORT; COVENANTS 

1.01 Support of Company Holders. 

(a) Each Holder, solely in his, her or its capacity as a holder of Securities or proxy holder of Securities, agrees irrevocably and
unconditionally, that at any Company Meeting, however called, or at any adjournment or postponement thereof, or in any other circumstance in which the vote, consent or other approval of the Holders of Securities is sought,

 such Holder shall (i) appear at each such meeting in person or by proxy or otherwise cause all of its
Covered Securities to be counted as present thereat for purposes of calculating a quorum and (ii) vote or provide consent (or cause to be voted or consented), in person or by proxy, or execute and deliver a written consent (or cause a written
consent to be executed and delivered) covering, all of its Covered Securities owned as of the record date for such meeting (or the date that any written consent is executed by such Holder): 

(i) in favor of each Company Proposal that such Holder is entitled to vote on as the holder of any class, series or type of Covered
Securities; 
 (ii) against any merger agreement, merger, exchange, consolidation, combination, sale of substantial assets, reorganization,
recapitalization, dissolution, liquidation or winding up of or by the Company or any other business combination proposal (other than the Merger Agreement and the transactions contemplated thereby); and 

(iii) against any proposal, action or agreement that would reasonably be expected to (A) impede, nullify, frustrate, prevent, interfere
with, materially delay the consummation of, or otherwise adversely affect, any of the transactions contemplated by the Merger Agreement, any Ancillary Agreement, the Merger or any provision of this Agreement, (B) result in a breach in any respect of
any covenant, representation, warranty or any other obligation or agreement of the Company under the Merger Agreement or any Ancillary Agreement, or (C) result in any of the conditions set forth in Article VII of the Merger Agreement not being
fulfilled. 
 (b) Each Holder hereby covenants and agrees that such Holder shall not (i) enter into any voting agreement or voting trust
with respect to any of such Holder’s Covered Securities that is inconsistent with such Holder’s obligations pursuant to this Agreement, (ii) grant a proxy or power of attorney with respect to any of such Holder’s Covered
Securities that is inconsistent with such Holder’s obligations pursuant to this Agreement, or (iii) enter into any agreement or undertaking that is otherwise inconsistent with, or would restrict, limit or interfere with, or prohibit or
prevent it from satisfying, its obligations pursuant to this Agreement. 
 1.02 No Transfer. During the period commencing on the date
hereof and ending on the earlier of (a) the Effective Time and (b) such date and time as the Merger Agreement shall be terminated in accordance with Section 8.1 (Termination) thereof, each Holder shall not,
except in each case pursuant to or as contemplated by the Merger Agreement, (i) directly or indirectly, sell (including short sells), offer to sell, contract or agree to sell, hypothecate, pledge, encumber, grant any Lien or option to purchase
or otherwise dispose of or enter into an agreement to dispose of, directly or indirectly, or establish or increase a put equivalent position or liquidation with respect to or decrease a call equivalent position within the meaning of Section 16
of the Exchange Act, and the rules and regulations of the Commission promulgated thereunder with respect to any Covered Securities owned by such Holder, either voluntarily or involuntarily, (ii) enter into any swap or other arrangement that
transfers to another, in whole or in part, any of the economic consequences of ownership of any Covered Securities owned by such Holder, whether any such transaction is to be settled by delivery of such Covered Securities, in cash or otherwise or
(iii) publicly announce any intention to effect any transaction specified in clause (i) or (ii) (collectively, a “Transfer”); or enter into any contract, option, derivative, hedging or other agreement or arrangement or
understanding (including any profit- sharing arrangement) with respect to, or consent to, a Transfer of, any or all of the Covered Securities, provided, however, that the foregoing shall not prohibit either (A) the conversion or exchange of
securities convertible into or exchangeable for Securities in accordance with 

 their terms or (B) Transfers between such Holder and any Affiliate of such Holder or to another Holder
of the Company that is a party to this Agreement and bound by the terms and obligations hereof or agrees to become a party to this Agreement and signs a joinder hereto in form and substance satisfactory to the Company. Each Holder hereby authorizes
the Company to maintain a copy of this Agreement at either the executive office or the registered office of the Company. 
 1.03 Further
Assurances. Each Holder agrees that Section 6.9 (Public Announcements) of the Merger Agreement shall apply to such Holder mutatis mutandis and such Holder shall agree to be bound by the same as if such Holder were a party to
the Merger Agreement. 
 1.04 Disclosure. Such Holder hereby authorizes the Company and SPAC to publish and disclose in any
announcement or disclosure required by the SEC such Holder’s identity and ownership of the Covered Securities and the nature of such Holder’s obligations under this Agreement, to the extent necessary to comply with applicable Law. 

ARTICLE II 

REPRESENTATIONS AND WARRANTIES 

2.01 Representations and Warranties of each Holder. Each Holder represents and warrants, severally (and not jointly and severally) as
to itself only, as of the date hereof to the Company as follows: 
 (a) Organization; Due Authorization. (i) if such Holder is a
natural person, such person has all the requisite power and authority and has taken all action necessary in order to execute and deliver this Agreement, to perform his or her obligations hereunder, and (ii) is duly organized, validly existing
and in good standing under the laws of the jurisdiction in which it is incorporated, formed, organized or constituted, and the execution, delivery and performance of this Agreement and the consummation of the transactions contemplated hereby are
within such person’s corporate, limited liability company or organizational powers and have been duly authorized by all necessary corporate, limited liability company or organizational actions on the part of such person. This Agreement has been
duly executed and delivered by each 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 each Holder, enforceable against each
Holder in accordance with the terms hereof (except as enforceability may be limited by bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium and similar Laws affecting creditors’ rights generally and general principles of
equity). If this Agreement is being executed in a representative or fiduciary capacity, the person signing this Agreement has full power and authority to enter into this Agreement on behalf of said Holder. 

(b) Ownership. Each Holder is the record, legal and beneficial owner (as defined in the Securities Act) of, and has good title to, all
of such Holder’s Covered Securities listed on Schedule I hereto, and there exist no Liens or any other limitation or restriction (including any restriction on the right to vote, sell or otherwise dispose of such Covered Securities (other
than transfer restrictions under the Securities Act)) affecting any such Covered Securities, other than Liens pursuant to (i) this Agreement, (ii) if applicable, the Holder’s organizational documents, (iii) the Merger Agreement,
or (iv) any applicable securities Laws. The execution, delivery and performance of this Agreement by each Holder does not, and the 

 consummation of the transactions contemplated hereby and the other transactions contemplated by the Merger
Agreement will not, constitute or result in, with or without notice, lapse of time or both, a breach or violation of, a termination (or right of termination) of or a default under, the loss of any benefit under, the creation, modification or
acceleration of any obligations under or the creation of a Lien on any of the properties, rights or assets of each Holder pursuant to any Contracts binding upon any Holder or under any applicable Law to which each Holder is subject. Each
Holder’s Covered Securities are the only Securities in the Company owned of record or beneficially by such Holder on the date of this Agreement, and none of such Holder’s Covered Securities are subject to any proxy, voting trust or other
agreement or arrangement with respect to the voting of such Covered Securities, except as provided hereunder. 
 (c) No Conflicts. The
execution and delivery of this Agreement by each Holder does not, and the performance by each Holder of its obligations hereunder and other transactions contemplated by the Merger Agreement will not, (i) conflict with or result in a violation
of the organizational documents of such Holder that is not a natural person or (ii) require any consent or approval that has not been given or other action that has not been taken by any person (including under any Contract binding upon such
Holder or such Holder’s Covered Securities), in each case, to the extent such consent, approval or other action would prevent, enjoin or materially delay the performance by such Holder of its, his or her obligations under this Agreement. 

(d) Litigation. There is no action, proceeding or investigation pending against any Holder or, to the knowledge of any Holder,
threatened against any Holder that questions the beneficial or record ownership of the Holder’s Owned Securities, the validity of this Agreement or which in any manner challenges or seeks to prevent, enjoin or materially delay the performance
by each Holder of its, his or her obligations under this Agreement. 
 (e) Acknowledgment. Each Holder understands and acknowledges
that each of SPAC and the Company is entering into the Merger Agreement in reliance upon such Holder’s execution and delivery of this Agreement. 

(f) Each Holder has had adequate information concerning the business and financial condition of the Company and the Merger to make an informed
decision regarding this Agreement and has independently and without reliance upon the company or SPAC and based on such information as each Holder has deemed appropriate, made its own analysis and decision to enter into this Agreement. The Holder
acknowledges that the Company and SPAC have not made and do not make any representation or warranty, whether express or implied, of any kind or character except as expressly set forth in this Agreement. 

ARTICLE III 

MISCELLANEOUS 

3.01 Termination. This Agreement and all of its provisions shall terminate and be of no further force or effect upon the earlier of
(a) the termination of the Merger Agreement in accordance with its terms, (b) the Effective Time and (c) the written agreement of each Holder and the Company. Upon such termination of this Agreement, all obligations of the parties
under this Agreement will terminate, without any liability or other obligation on the part of any party hereto to any person in respect hereof or the transactions contemplated hereby, and no party hereto shall have any claim against another (and no
person shall have any rights against such party), whether under contract, tort or otherwise, with respect to the subject matter hereof; 

 provided, however, that the termination of this Agreement shall not relieve any party hereto from liability
arising in respect of any willful breach of this Agreement prior to such termination. This ARTICLE III shall survive the termination of this Agreement. 

3.02 Governing Law; Jurisdiction; Waiver of Jury Trial. Sections 9.6 (Governing Law) and 9.7 (Waiver of Jury
Trial) of the Merger Agreement are incorporated herein by reference, mutatis mutandis. 
 3.03 Entire Agreement; Assignment;
Third Party Beneficiaries. This Agreement constitutes the entire agreement among the parties with respect to the subject matter hereof and supersedes all prior agreements and undertakings, both written and oral, among the parties, or any of
them, with respect to the subject matter hereof. This Agreement shall not be assigned (whether pursuant to a merger, by operation of law or otherwise) by any party without the prior express written consent of the other parties hereto. SPAC is
expressly made a third party beneficiary of this Agreement and shall be entitled to enforce this Agreement in the same manner as if SPAC were a party hereto. 

3.04 Specific Performance. The parties agree that irreparable damage would occur if any provision of this Agreement were not performed
in accordance with the terms hereof, and, accordingly, that the parties shall be entitled to an injunction or injunctions to prevent breaches of this Agreement or to enforce specifically the performance of the terms and provisions hereof in the
Court of Chancery of the State of Delaware or, if that court does not have jurisdiction, any court of the United States located in the State of Delaware or, if that court does not have jurisdiction, any other court of the United States, the United
Kingdom or any other jurisdiction that has jurisdiction over the relevant Holder or Holders, without proof of actual damages or otherwise, in addition to any other remedy to which they are entitled at law or in equity as expressly permitted in this
Agreement. Each of the parties hereby further waives (a) any defense in any action for specific performance that a remedy at law would be adequate and (b) any requirement under any Law to post security or a bond as a prerequisite to obtaining
equitable relief. 
 3.05 Amendment. This Agreement may not be amended, changed, supplemented, waived or otherwise modified or
terminated, except upon the execution and delivery of a written agreement executed by the Company and the Holder or Holders affected thereby, it being agreed that the Company shall not consent to any amendment, change, waiver, modification or
termination of this Agreement without the prior written consent of SPAC. 
 3.06 Severability. If any provision of this Agreement is
invalid, illegal or incapable of being enforced by any rule of law, or public policy, all other conditions and provisions of this Agreement shall nevertheless remain in full force and effect. Upon such determination that any term or other provision
is invalid, illegal or incapable of being enforced, the parties hereto shall negotiate in good faith to modify this Agreement so as to effect the original intent of the parties as closely as possible in a mutually acceptable manner in order that the
Merger and the transactions contemplated thereby shall be consummated as originally contemplated to the fullest extent possible. 
 3.07
Notices. All notices and other communications among the parties hereto shall be in writing and shall be deemed to have been duly given (a) when delivered in person, (b) when delivered after posting in the United States mail having
been sent registered or certified mail return receipt requested, postage prepaid, (c) when delivered by FedEx or other nationally recognized overnight delivery service or (d) when e-mailed during
normal business hours (and otherwise as of the immediately following Business Day), addressed as follows: 

 If to the Company to: 

3 More London Riverside 
 London
SE1 2AQ 
 United Kingdom 

Email: 
 with a copy to: 

Fried, Frank, Harris, Shriver & Jacobson LLP 

One New York Plaza 
 New York, NY
10004 
 Attention: Warren S. de Wied 

Email: 
 and to: 

Fried, Frank, Harris, Shriver & Jacobson (London) LLP 

100 Bishopsgate, London, EC2N 4AG 

United Kingdom 
 Attention: Ian
Lopez 
 Email: 
 and to: 

Goodwin Procter LLP 
 100 Northern
Avenue 
 Boston, MA 02210 

Attention: Edwin O’Connor; Paul R. Rosie 

Email: 
 If to any Holder, to the
address or email address set forth opposite such Holder’s name on Schedule I, or in the absence of such address or email address being set forth on Schedule I, the address (including email) set forth in the Company’s books
and records. 
 3.08 Counterparts; Electronic Delivery. This Agreement may be executed in counterparts, each of which when so executed
shall be deemed to be an original and all of which when taken together shall constitute one and the same instrument. The words “execution,” “signed,” “signature,” and words of like import in this Agreement shall include
images of manually executed signatures transmitted by facsimile or other electronic format (including, without limitation, “pdf”, “tif” or “jpg”) and other electronic signatures (including, without limitation, DocuSign
and AdobeSign). The use of electronic signatures and electronic records (including, without limitation, any contract or other record created, generated, sent, communicated, received, or stored by electronic means) shall be of the same legal effect,
validity and enforceability as a manually executed signature or use of a paper-based record- keeping system to the fullest extent permitted by applicable law, including the Federal Electronic Signatures in Global and National Commerce Act, the New
York State Electronic Signatures and Records Act and any other applicable law, including, without limitation, any state law based on the Uniform Electronic Transactions Act or the Uniform Commercial Code. 

 3.09 Capacity as a Holder. Notwithstanding anything herein to the contrary, each
Holder signs this Agreement solely in the Holder’s capacity as a Holder or proxy holder of Securities, and not in any other capacity and this Agreement shall not limit, prevent or otherwise affect the actions of such Holder or any Affiliate,
employee or designee of such Holder or any of their respective Affiliates in his or her capacity, if applicable, as an officer or director of the Company (or any Subsidiary of the Company) or any other person, including in the exercise of his or her
fiduciary duties as a director or officer of the Company or any Subsidiary of the Company. No Holder shall be liable or responsible for any breach, default, or violation of any representation, warranty, covenant or agreement by any other Holder that
is also a party hereto and each Holder shall solely be required to perform its obligations hereunder in its individual capacity. 
 [THE
REMAINDER OF THIS PAGE IS INTENTIONALLY BLANK] 

 IN WITNESS WHEREOF, the Company and the Holders have each caused this Agreement to be duly
executed as of the date first written above. 
  

			
	LUMIRADX LIMITED
		
	By:	 	 /s/ Veronique Ameye

	Name: Veronique Ameye
	Title: Attorney

 
			
	HOLDER:
	
	Zwanziger Family Ventures LLC
		
	By:	 	 /s/ Ron Zwanziger

	Name: Ron Zwanziger
	
	Zwanziger Ventures, LLC
		
	By:	 	 /s/ Ron Zwanziger

	Name: Ron Zwanziger
	
	Treisar Investments Limited
		
	By:	 	 /s/ Ron Zwanziger

	Name: Ron Zwanziger
	
	Ron Zwanziger
		
	By:	 	 /s/ Ron Zwanziger

	
	David Scott
		
	By:	 	 /s/ David Scott

	
	Jerome McAleer
		
	By:	 	 /s/ Jerome McAleer

	
	Willard L. Umphrey
		
	By:	 	 /s/ Willard L. Umphrey

	
	Anne Umphrey
		
	By:	 	 /s/ Anne Umphrey

	
	Pensco Trust Company Custodian – FBO Willard L. Umphrey Roth IRA
		
	By:	 	 /s/ Willard L. Umphrey

	Name: Willard L. Umphrey

 
			
	USB Focus Fund LumiraDx 1-A, LLC
		
	By:	 	 /s/ John McAleer

	Name: John McAleer
	Title: Managing Member, Pear Tree Partners
	
	USB Focus Fund LumiraDx 1-B, LLC
		
	By:	 	 /s/ John McAleer

	Name: John McAleer
	Title: Managing Member, Pear Tree Partners
	
	For and on behalf of Morningside Venture Investments Limited
		
	By:	 	 /s/ Jill Marie Franklin

	Name: Jill Marie Franklin
	Title: Authorized Signatory
		
	By:	 	 /s/ Frances Anne Elizabeth Richard

	Name: Frances Anne Elizabeth Richard
	Title: Authorized Signatory
	
	For and on behalf of MVIL, LLC
		
	By:	 	 /s/ Cheng Yee Wing Betty

	Name: Cheng Yee Wing Betty
	Title: Authorized Signatory
		
	By:	 	 /s/ Wong See Wai

	Name: Wong See Wai
	Title: Authorized Signatory

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