Employment Letter to Mark Day dated September 3, 2007 between the Registrant and Mark Day

As a condition of my employment with iRhythm Technologies, Inc., its subsidiaries, affiliates, successors or assigns (together the "Company”), and in consideration of my employment with the Company and my receipt of the compensation now and hereafter paid to me by Company, I agree to the following:

I UNDERSTAND AND ACKNOWLEDGE THAT: (i) MY EMPLOYMENT WITH THE COMPANY IS FOR AN UNSPECIFIED DURATION AND CONSTITUTES “AT- WILL” EMPLOYMENT; (ii) ANY REPRESENTATION TO THE CONTRARY IS UNAUTHORIZED AND NOT VALID UNLESS IN WRITING AND SIGNED BY THE PRESIDENT OF THE COMPANY; AND (iii) MY EMPLOYMENT RELATIONSHIP MAY BE TERMINATED AT ANY TIME, WITH OR WITHOUT GOOD CAUSE OR FOR ANY OR NO CAUSE, AT MY OPTION OR AT THE OPTION OF THE COMPANY, WITH OR WITHOUT NOTICE.

A.Company Information. I agree at all times during my employment with the Company and thereafter, to hold in the strictest confidence, and not to use, except for the benefit of the Company, or to disclose to any person, firm or corporation without written authorization of the President or the Board of Directors of the Company, any Company Confidential Information. I understand that my unauthorized use or disclosure of Company Confidential Information during my employment will lead to disciplinary action, up to and including immediate termination and legal action by the Company. I understand that “Company Confidential Information” means any non-public information that relates to the actual or anticipated business, research or development of the Company, or to the Company’s technical data, trade secrets or know-how, including, but not limited to, research, product plans or other information regarding the Company’s products or services and markets therefor, customer lists and customers (including, but not limited to, customers of the Company on which I called or with which I may become acquainted during the term of my employment), software, developments, inventions, processes, formulas, technology, designs, drawings, engineering, hardware configuration information, marketing, finances and other business information; provided, however Company Confidential Information does not include any of the foregoing items to the extent the same have become publicly known and made generally available through no wrongful act of mine or of others.

B.Former Employer Information. 1 agree that during my employment with the Company, I will not improperly use, disclose, or induce the Company to use any proprietary information or trade secrets of any former or concurrent employer or other person or entity. I further agree that I will not bring onto the premises of the Company or transfer onto the Company’s technology systems any unpublished document, proprietary information or trade secrets belonging to any such employer, person or entity unless consented to in writing by both Company and such employer, person or entity.

C.Third Party Information. 1 recognize that the Company may have received and in the future may receive from third parties associated with the Company, e.g., the Company’s customers, suppliers, licensors, licensees, partners, or collaborators (“Associated Third Parties”) their confidential or proprietary information (“Associated Third Party Confidential Information”). By way of example, Associated Third Party Confidential Information may include the habits or practices of Associated Third Parties, the technology of Associated Third Parties, requirements of Associated Third Parties, and information related to the business conducted between the Company and such Associated Third Parties. I agree at all times during my employment with the Company and thereafter, to hold in the strictest confidence, and not to use or to disclose to any person, firm or corporation any Associated Third Party Confidential Information, except as necessary in carrying out my work for the Company consistent with the Company’s agreement with such Associated Third Parties. I understand that my unauthorized use or disclosure of Associated Third Party Confidential Information during my employment will lead to disciplinary action, up to and including immediate termination and legal action by the Company.

A.Inventions Retained and Licensed. I have attached hereto as Exhibit A. a list describing all inventions, discoveries, original works of authorship, developments, improvements, and trade secrets, which were conceived in whole or in part by me prior to my employment with the Company to which I have any right, title or interest, which are subject to California Labor Code Section 2870 attached hereto as Exhibit B, and which relate to the Company’s proposed business, products, or research and development (“Prior Inventions”); or, if no such list is attached, I represent and warrant that there are no such Prior Inventions. Furthermore, I represent and warrant that the inclusion of any Prior Inventions from Exhibit A of this Agreement will not materially affect my ability to perform all obligations under this Agreement. If, in the course of my employment with the Company, I incorporate into or use in connection with any product, process, service, technology or other work by or on behalf of Company any Prior Invention, I hereby grant to the Company a nonexclusive, royalty-free, fully paid-up, irrevocable, perpetual, worldwide license, with the right to grant, and authorize sublicenses, to make, have made, modify, use, import., offer for sale, and sell such Prior Invention as part of or in connection with such product, process, service, technology or other work and to practice any method related thereto.

Assignment of Inventions. I agree that I will promptly make lull written disclosure to the Company, will hold in trust for the sole right and benefit of the Company, and hereby assign to the Company, or its designee, all my right, title, and interest, in and to any and all inventions, original works of authorship, developments, concepts, improvements, designs, discoveries, ideas, trademarks or trade secrets, whether or not. patentable or registrable under patent, copyright or similar laws, which I may solely or jointly conceive or develop or reduce to practice, or cause to be conceived or developed or reduced to practice, during the period of time I am in the employ of the Company (including during my off-duty hours), or with the use of Company’s equipment., supplies, facilities, or Company Confidential Information, except as

provided in Section 3.E below (collectively referred to as “Inventions”). I further acknowledge that all original works of authorship which are made by me (solely or jointly with others) within the scope of and during the period of my employment with the Company and which are protectable by copyright are “works made for hire,” as that term, is defined in the United States Copyright Act, I understand and agree that the decision whether or not to commercialize or market any Inventions is within the Company’s sole discretion and for the Company’s sole benefit and that no royalty or other consideration will be due to me as a result of the Company’s efforts to commercialize or market any such Inventions.

B.Maintenance oj Records. I agree to keep and maintain adequate, current, accurate, and authentic written records of all Inventions made by me (solely or jointly with others) during the term of my employment with the Company. The records will be in the form of notes, sketches, drawings, electronic files, reports, or any other format that may be specified by the Company. The records are and will be available to and remain the sole property of the Company at all times.

C.Patent and Copyright Registrations. I agree to assist the Company, or its designee, at the Company’s expense, in every proper way to secure the Company’s rights in the Inventions and any rights relating thereto in any and all countries, including the disclosure to the Company of all pertinent information and data with respect thereto, the execution of all applications, specifications, oaths, assignments and all other instruments which the Company shall deem proper or necessary in order to apply for, register, obtain, maintain, defend, and enforce such rights and in order to assign and convey to the Company, its successors, assigns, and nominees the sole and exclusive rights, title and interest in and to such Inventions and any rights relating thereto, and testifying in a suit or other proceeding relating to such Inventions and any rights relating thereto. I further agree that, my obligation, to execute or cause to be executed, when it is in my power to do so, any such instrument or papers shall continue after the termination of this Agreement. If the Company is unable because of my mental or physical incapacity or for any other reason to secure my signature with respect to any Inventions including, without limitation, to apply for or to pursue any application for any United States or foreign patents or copyright registrations covering such Inventions, then I hereby irrevocably designate and appoint: the Company and its duly authorized officers and agents as my agent and attorney in fact, to act for and in my behalf and stead to execute and file any papers, oaths and to do all other lawfully permitted acts with respect to such Inventions with the same legal force and effect as if executed by me.

D.Exception to Assignments. I understand that the provisions of this Agreement requiring assignment of Inventions to the Company do not apply to any invention which qualifies fully under the provisions of California Labor Code Section 2870 (attached hereto as Exhibit B). I will advise the Company promptly in writing of any inventions that I believe meet the criteria in California Labor Code Section 2870 and not otherwise disclosed on Exhibit A.

A.Current Obligations. 1 agree that during the term of my employment with the Company, I will not engage in or undertake any other employment, occupation, consulting relationship or commitment that is directly related, to the business in which the Company is now involved or becomes involved or has plans to become involved, nor will 1 engage in any other activities that conflict with my obligations to the Company.

B.Prior Relationships. Without limiting Section 4.A, 1 represent that 1 have no other agreements, relationships or commitments to any other person or entity that conflict with my obligations to the Company under this Agreement or my ability to become employed and perform the services for which 1 am being hired by the Company. 1 further agree that if 1 have signed a confidentiality agreement or similar type of agreement with any former employer or other entity, I will comply with the terms of any such agreement to the extent that its terms are lawful under applicable law. I represent and warrant that after undertaking a careful search (including searches of my computers, cell phones, electronic devices and documents), I have returned all property and confidential information belonging to all prior employers. Moreover, in the event that the Company or any of its directors, officers, agents, employees, investors, shareholders, administrators, affiliates, divisions, subsidiaries, predecessor or successor corporations, or assigns is sued based on any obligation or agreement to which I am a party or am bound, I agree to fully indemnify the Company, its directors, officers, agents, employees, investors, shareholders, administrators, affiliates, divisions, subsidiaries, predecessor and successor corporations, and assigns for all verdicts, judgments, settlements, and other losses incurred by the Company (the indemnitee) in the event that it is the subject of any legal action resulting from any breach of my obligations under this Agreement, as well as any reasonable attorneys⁵ fees and costs if the plaintiff is the prevailing party in such an action.

5.Returning Company Documents. Upon separation from employment with the Company or on demand by the Company during my employment, I will immediately deliver to the Company, and will not keep in my possession, recreate or deliver to anyone else, any and all Company property, including, but not limited to, Company Confidential Information, Associated Third Party Confidential Information, as well as all devices and equipment belonging to the Company (including computers, handheld electronic devices, telephone equipment, and other electronic devices), Company credit cards, records, data, notes, notebooks, reports, files, proposals, lists, correspondence, specifications, drawings blueprints, sketches, materials, photographs, charts, all documents and property, and reproductions of any of the aforementioned items that were developed by me pursuant to my employment with the Company, obtained by me in connection with my employment with the Company, or otherwise belonging to the Company, its successors or assigns, including, without limitation, those records maintained pursuant to Section 3.C. I also consent to an exit interview to confirm my compliance with this Section 5.

6.Termination Certification. Upon separation from employment with the Company,

1 agree to immediately sign and deliver to the Company the “Termination Certification⁵⁵ attached hereto as Exhibit C. I also agree to keep the Company advised of my home and business address for a period of three (3) years after termination of my employment with the Company, so that the Company can contact me regarding my continuing obligations provided by this Agreement.

8.Solicitation of Employees. I agree that for a period of twelve (12) months immediately following the termination of my relationship with the Company for any reason, whether voluntary or involuntary, with or without cause, I shall not either directly or indirectly solicit any of the Company’s employees to leave their employment, or attempt to solicit employees of the Company, either for myself or for any other person or entity,

9.Conflict of Interest Guidelines. I agree to diligently adhere all to policies of the Company including the Company’s insider’s trading policies and the Conflict of Interest Guidelines attached as Exhibit D hereto, which may be revised from time to time during my employment.

10.Representations. 1 agree to execute any proper oath or verify any proper document required to carry out the terms of this Agreement. I represent that my performance of all the terms of this Agreement, will not breach any agreement to keep in confidence proprietary information acquired by me in confidence or in trust prior to my employment by the Company, I hereby represent and warrant that 1 have not entered into, and I will not enter into, any oral or written agreement in conflict herewith.

THE COMPANY, ITS PROMISE TO ARBITRATE ALL EMPLOYMENT-RELATED DISPUTES, AND MY RECEIPT OF THE COMPENSATION, PAY RAISES AND OTHER BENEFITS PAID TO ME BY THE COMPANY, AT PRESENT AND IN THE FUTURE, I AGREE THAT ANY AND ALL CONTROVERSIES, CLAIMS, OR DISPUTES WITH ANYONE (INCLUDING THE COMPANY AND ANY EMPLOYEE, OFFICER, DIRECTOR, SHAREHOLDER OR BENEFIT PLAN OF THE COMPANY IN THEIR CAPACITY AS SUCH OR OTHERWISE), WHETHER BROUGHT ON AN INDIVIDUAL, GROUP, OR CLASS BASIS, ARISING OUT OF, RELATING TO, OR RESULTING FROM MY EMPLOYMENT WITH THE COMPANY OR THE TERMINATION OF MY EMPLOYMENT WITH THE COMPANY, INCLUDING ANY BREACH OF THIS AGREEMENT, SHALL BE SUBJECT TO BINDING ARBITRATION UNDER THE ARBITRATION RULES SET FORTH IN CALIFORNIA CODE OF CIVIL PROCEDURE. SECTION 1280 THROUGH 1294.2, INCLUDING SECTION 1283.05 (THE “RULES”) AND PURSUANT TO CALIFORNIA LAW, DISPUTES WHICH I AGREE TO ARBITRATE, AND THEREBY AGREE TO WAIVE ANY RIGHT TO A TRIAL BY JURY, INCLUDE ANY STATUTORY CLAIMS UNDER STATE OR FEDERAL LAW, INCLUDING, BUT NOT LIMITED TO, CLAIMS UNDER TITLE VII OF THE CIVIL RIGHTS ACT OF 1964, THE AMERICANS WITH DISABILITIES ACT OF 1990, THE AGE DISCRIMINATION IN EMPLOYMENT ACT OF 1967, THE OUTER WORKERS BENEFIT PROTECTION ACT, THE SARBANES- OXLEY ACT, THE WORKER ADJUSTMENT AND RETRAINING NOTIFICATION ACT, THE CALIFORNIA FAIR EMPLOYMENT AND HOUSING ACT, THE FAMILY AND MEDICAL LEAVE ACT, THE CALIFORNIA FAMILY RIGHTS ACT', THE CALIFORNIA LABOR CODE, CLAIMS OF HARASSMENT, DISCRIMINATION AND WRONGFUL TERMINATION AND ANY STATUTORY CLAIMS. I FURTHER UNDERSTAND THAT THIS AGREEMENT TO ARBITRATE ALSO APPLIES TO ANY DISPUTES THAT THE COMPANY MAY HAVE WITH ME.

B.Procedure. I AGREE THAT ANY ARBITRATION WILL BE ADMINISTERED BY THE AMERICAN ARBITRATION ASSOCIATION (“AAA”) AND THAT THE NEUTRAL ARBITRATOR WILL BE SELECTED IN A MANNER CONSISTENT WITH AAA’S NATIONAL RULES FOR THE RESOLUTION OF EMPLOYMENT DISPUTES. 1 AGREE THAT THE ARBITRATOR SHALL HAVE THE POWER TO DECIDE ANY MOTIONS BROUGHT BY ANY PARTY TO THE ARBITRATION, INCLUDING MOTIONS FOR SUMMARY JUDGMENT AND/OR ADJUDICATION, MOTIONS TO DISMISS AND DEMURRERS, AND MOTIONS FOR CLASS CERTIFICATION, PRIOR TO ANY ARBITRATION HEARING. I ALSO AGREE THAT THE ARBITRATOR SHALL HAVE THE POWER TO AWARD ANY REMEDIES AVAILABLE UNDER APPLICABLE LAW, AND THAT' THE ARBITRATOR SHALL AWARD ATTORNEYS'' FEES AND COSTS TO THE PREVAILING PARTY EXCEPT AS PROHIBITED BY LAW, I UNDERSTAND THAI' THE COMPANY WILL PAY FOR ANY ADMINISTRATIVE OR HEARING FEES CHARGED BY THE ARBITRATOR OR AAA EXCEPT THAT I SHALL PAY THE FIRST $125.00 OF ANY FILING FEES ASSOCIATED WITH ANY ARBITRATION I INITIATE. I AGREE THAT THE ARBITRATOR SHALL ADMINISTER AND CONDUCT ANY ARBITRATION IN A MANNER CONSISTENT WITH THE RULES AND THAT TO THE EXTENT THAT THE AAA’S NATIONAL RULES FOR THE RESOLUTION OF EMPLOYMENT DISPUTES CONFLICT WITH THE RULES, THE RULES SHALL TAKE PRECEDENCE, I AGREE THAT THE DECISION OF THE ARBITRATOR SHALL BE IN WRITING. I AGREE THAT ANY ARBITRATION UNDER THIS AGREEMENT SHALL BE CONDUCTED IN SANTA CLARA COUNTY, CALIFORNIA,

C.Remedy. EXCEPT AS PROVIDED BY THE RULES AND THIS AGREEMENT, ARBITRATION SHALL. BE THE SOLE, EXCLUSIVE AND FINAL REMEDY FOR ANY DISPUTE BETWEEN ME AND THE COMPANY. ACCORDINGLY, EXCEPT AS PROVIDED FOR BY THE RULES AND THIS AGREEMENT, NEITHER I NOR THE COMPANY WILL, BE PERMITTED TO PURSUE COURT ACTION REGARDING CLAIMS THAT ARE SUBJECT TO ARBITRATION. NOT WITHSTANDING, THE ARBITRATOR WILL NOT HAVE THE AUTHORITY TO DISREGARD OR REFUSE TO ENFORCE ANY LAWFUL COMPANY POLICY, AND THE ARBITRATOR SHALL

NOT ORDER OR REQUIRE THE COMPANY TO ADOPT A POLICY NOT OTHERWISE REQUIRED BY LAW. NOTHING IN THIS AGREEMENT OR IN THIS PROVISION IS INTENDED TO WAIVE THE PROVISIONAL RELIEF REMEDIES AVAILABLE UNDER THE RULES.

D. Administrative Relief. I UNDERSTAND THAT ITUS AGREEMENT' DOES NOT PROHIBIT ME FROM PURSUING AN ADMINISTRATIVE CLAIM WITH A LOCAL, STATE OR FEDERAL ADMINISTRATIVE BODY SUCH AS THE DEPARTMENT OF FAIR EMPLOYMENT AND HOUSING, THE EQUAL EMPLOYMENT’ OPPORTUNITY COMMISSION OR THE WORKERS⁵ COMPENSATION BOARD. THIS AGREEMENT DOES, HOWEVER, PRECLUDE ME FROM PURSUING COURT ACTION REGARDING ANY SUCH CLAIM.

E. Voluntary Nature of Agreement. I ACKNOWLEDGE AND AGREE THAT I AM EXECUTING THIS AGREEMENT VOLUNTARILY AND WITHOUT ANY DURESS OR UNDUE INFLUENCE BY THE COMPANY OR ANYONE ELSE. I FURTHER ACKNOWLEDGE AND AGREE THAT I HAVE CAREFULLY READ THIS AGREEMENT AND THAT I HAVE ASKED ANY QUESTIONS NEEDED FOR ME TO UNDERSTAND THE TERMS, CONSEQUENCES AND BINDING EFFECT OF THIS AGREEMENT AND FULLY UNDERSTAND IT, INCLUDING THAT I AM WAIVING MY RIGHT TO A JURY TRIAL. FINALLY, I AGREE THAT I HAVE BEEN PROVIDED AN OPPORTUNITY TO SEEK THE ADVICE OF AN ATTORNEY OF MY CHOICE BEFORE SIGNING THIS AGREEMENT.

A.Governing Law; Consent to Personal Jurisdiction. This Agreement will be governed by the laws of the State of California without giving effect to any choice of law rules or principles that may result in the application of the laws of any jurisdiction other than California. To the extent that any lawsuit is permitted under this Agreement, I hereby expressly consent to the persona] jurisdiction of the state and federal courts located in California for any lawsuit filed against me by the Company .

B.Entire Agreement. This Agreement, together with the Exhibits herein, sets forth the entire agreement and understanding between the Company and me relating to the subject matter herein and supersedes all prior discussions or representations between us including, but not limited to, any representations made during my interview(s) or relocation negotiations, whether written or oral. No modification of or amendment to this Agreement, nor any waiver of any rights under this Agreement, will be effective unless in writing signed by the President of the Company and me. Any subsequent change or changes in my duties, salary or compensation will not affect the validity or scope of this Agreement.

C.Severability. If one or more of the provisions in this Agreement are deemed void by law, then the remaining provisions will continue in full force and effect.

D.Successors and Assigns. This Agreement will be binding upon my heirs, executors, assigns, administrators and other legal representatives and will be for the benefit ofthe Company, its successors, and its assigns. There are no intended third party beneficiaries to this Agreement except as expressly stated,

E,Waiver. Waiver by the Company of a breach of any provision of this Agreement will not operate as a waiver of any other or subsequent breach,

F,Survivorship. The rights and obligations of the parties to this Agreement will survive termination of my employment with the Company.

G,Signatures. This Agreement may be signed in two counterparts, each of which shall be deemed an original, with the same force and effectiveness as though executed in a single document.

Date: September 3, 2007                      

Signature: /s/ Mark J. Day            

    

Name of Employee (typed or printed)

After leaving the Company’s employment, I will be employed by in the position of: