Document:

EX-10.12

 Exhibit 10.12 

THIRD AMENDMENT TO LEASE 

THIS THIRD AMENDMENT TO LEASE (this “Third Amendment”) is dated for reference purposes only as of January 8, 2014, by
and between BIG DOG HOLDINGS LLC, a Delaware limited liability company (as successor in interest to 650 TOWNSEND ASSOCIATES LLC, a Delaware limited liability company) (“Landlord”), and IRHYTHM TECHNOLOGIES, INC., a Delaware
corporation (“Tenant”). 
 RECITALS 

A. Pursuant to that certain Office Lease dated as of April 30, 2008 (the “Original Lease”), as amended by that certain
First Amendment to Lease dated as of February 26, 2010 (the “First Amendment to Lease”) and by that certain Second Amendment to Lease dated as of December 19, 2011 (the “Second Amendment to Lease”,
collectively with the Original Lease and the First Amendment to Lease, the “Existing Lease”), Tenant leases certain premises containing approximately 11,254 square feet of rentable area located on the third floor, commonly referred
to as Suite 380 (the “Premises”), in the building located at 650 Townsend Street, San Francisco, California (the “Building”). 

B. Landlord and Tenant now desire to extend the Term of the Existing Lease for an additional period of twenty four (24) months (with the
new Expiration Date of the Term occurring on April 30, 2016) (the “Extension Period”), and Tenant also desires to add to the Premises an additional 1565 square feet of rentable area located on the third floor of the Building,
commonly referred to as Suite 316 (the “Additional Premises”). The Premises and such Additional Premises are shaded in yellow on the floor plan attached hereto as Exhibit A. Landlord, subject to the terms and
conditions set forth herein, shall agree to both the extension of the Term of the Existing Lease by the Extension Period and the addition of the Additional Premises to the existing Premises. 

D. Landlord and Tenant now desire to amend the Existing Lease to set forth the terms and conditions upon which both the extension of the Term
of the Existing Lease to April 30, 2016 and the addition of the Additional Premises to the existing Premises shall be governed and to modify certain other terms and conditions of the Existing Lease, all as further described herein. The Existing
Lease, as amended by this Third Amendment, is referred to herein as the “Lease.” 
 AGREEMENT 

NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt and sufficiency of which are
hereby acknowledged, Landlord and Tenant hereby agree as follows: 
 1. Use of Defined Terms; Recitals; Exhibits; Effective Date.

 1.1 Definitions. Unless otherwise defined herein or unless the context clearly requires otherwise, all capitalized terms used
herein shall have the defined meanings ascribed to them in the Existing Lease. In the event of any conflict between the terms of the Existing Lease and the terms of this Third Amendment, the terms (including, without limitation, any definitions) set
forth in this Third Amendment shall supersede and control. 

 1.2 Recitals. The recitals set forth above are incorporated herein and made a part of this
Third Amendment to the same extent as if set forth herein in full. 
 1.3 Exhibits. The exhibits attached hereto are incorporated
herein and made a part of this Third Amendment. Unless otherwise defined herein or unless the context clearly requires otherwise, all capitalized terms used in the exhibits attached hereto shall have the defined meanings ascribed to them in this
Third Amendment. 
 1.4 Effective Date and Commencement Dates. Unless otherwise specifically provided herein, the provisions of this
Third Amendment shall be effective as of the date that this Third Amendment has been fully executed and delivered by both Tenant and Landlord (the “Effective Date”). Unless otherwise specifically provided herein, the commencement
date of the Extension Period shall be May 1, 2014 (the “Commencement Date”) and the commencement date relating to the Additional Premises shall be January 15, 2014 (the “Additional Premises Commencement
Date”). 
 2. Basic Lease Information. The Basic Lease Information attached to the Existing Lease summarizes the principal
terms applicable to the Existing Lease through the Expiration Date. Effective as of the Effective Date, such Basic Lease Information shall be deleted in its entirety and of no further force or effect, and in place thereof, the “Restated
Basic Lease Information” attached as Exhibit B to this Third Amendment shall serve as the operative summary of the principal terms of the Lease, as amended by this Third Amendment, from the Effective Date through the
expiration or earlier termination of the Lease. 
 3. Term. 

3.1 Extension of Term. Effective as of the Effective Date, the Term of the Lease shall be extended so that, unless earlier terminated
as provided in the Lease, the new Expiration Date of the Term of the Lease shall be April 30, 2016 for all purposes of the Lease, as amended hereby. 

3.2 No Additional Option Periods. Landlord and Tenant hereby acknowledge and agree that Tenant shall have no extension option or any
further option or right to extend the Term of the Lease beyond the Expiration Date set forth in Section 3.1 above. 
 4. Existing
Premises. Tenant currently leases and occupies the entirety of the existing Premises pursuant to the terms of the Existing Lease. From and after the Commencement Date and, unless earlier terminated as provided in the Lease, continuing through
and until the Expiration Date, Tenant shall continue to lease and occupy the existing Premises pursuant to the terms of the Lease. Landlord and Tenant hereby acknowledge and agree that Landlord has no obligation whatsoever to make any improvements
or perform any improvement or alteration work in the existing Premises, and, except as is otherwise expressly provided herein to the contrary, Landlord has no obligation whatsoever to pay for or perform any improvements or alterations in the
existing Premises or in the Building in connection with Landlord’s and Tenant’s entry into this Third Amendment. Any 

  
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improvements or alterations required or desired by Tenant in order to prepare the existing Premises for Tenant’s continued use of the same from and after the Commencement Date shall be
Tenant’s responsibility and shall be made or installed by Tenant, if at all, in accordance with the provisions of Article 10 of the Original Lease. 

5. Additional Premises. 

5.1 Lease of Additional Premises. From and after the Additional Premises Commencement Date and, unless earlier terminated as provided
in the Lease, continuing through and until the Expiration Date, Tenant shall lease and occupy the Additional Premises pursuant to the terms of the Lease, and as of the Additional Premises Commencement Date, the Additional Premises together with the
existing Premises shall constitute the Premises for all purposes of the Lease, as amended hereby. Landlord and Tenant hereby acknowledge and agree that Landlord has no obligation whatsoever to make any improvements or perform any improvement or
alteration work in the Additional Premises, and Landlord has no obligation whatsoever to pay for or perform any improvements or alterations in the Additional Premises or in the Building in connection with Landlord’s and Tenant’s entry into
this Third Amendment. Any improvements, alterations or furnishings required or desired by Tenant in order to prepare the Additional Premises for Tenant’s use and occupancy shall be Tenant’s responsibility and shall be made or installed by
Tenant, if at all, in accordance with the provisions of Article 10 of the Original Lease. 
 6. Base Rent; Base Year for Escalation
Rent. 
 6.1 Base Rent. Notwithstanding anything in the Existing Lease to the contrary, from and after the Effective Date and,
unless earlier terminated as provided in the Lease, continuing through and until the Expiration Date, Tenant shall pay to Landlord as monthly Base Rent for the Premises, the respective amounts of monthly Base Rent specified in the Restated Basic
Lease Information (for the corresponding Premises), and Tenant shall pay any and all such amounts to Landlord in accordance with those provisions of the Existing Lease which do not conflict with this Section 6.1. 

6.2 Base Year for Escalation Rent. Effective as of the Effective Date, the Base Year for all purposes of the Lease, as amended hereby,
shall be as is set forth in the Restated Basic Lease Information. 
 7. Security Deposit. Landlord and Tenant each acknowledge and
agree that Landlord currently holds Ninety-One Thousand Two Hundred Seventy-Eight and 00/100 Dollars ($91,278.00) as Tenant’s Security Deposit pursuant to Article 26 of the Original Lease. Concurrently with Tenant’s execution and delivery
of this Third Amendment, Tenant shall pay to Landlord the sum of Fifty-Four Thousand Eight Hundred Ninety-One and 99/100 Dollars ($54,891.99) in cash in order to increase Tenant’s total Security Deposit under the Lease to One Hundred Forty-Six
Thousand One Hundred Sixty-Nine and 69/100 Dollars ($146,169.99). Landlord shall continue to hold and administer the Security Deposit (as the same shall be increased pursuant to this Section 7) in accordance with the provisions of Article 26 of
the Original Lease. 

  
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 8. Brokers. Landlord and Tenant each represent and warrant to the other that, except for
Colliers International, representing Landlord exclusively (the “Landlord’s Broker”), and Cornish & Carey Commercial Newmark Knight Frank, representing Tenant exclusively (the “Tenant’s Broker”),
they have not made any agreement or taken any action which may cause anyone, other than Landlord’s Broker and Tenant’s Broker, to become entitled to a commission as a result of the transactions contemplated by this Third Amendment, and
each will indemnify and defend the other from any and all third-party claims for such compensation resulting from a party’s breach of its representation or warranty contained in this Section 8. Landlord, at its sole cost and expense, will
pay any commission which may be due to Landlord’s Broker and Tenant’s Broker pursuant to a separate written agreement with Landlord’s Broker. 

9. Tenant’s Representations. Tenant hereby represents and warrants to Landlord that as of the Effective Date: (a) all of
Tenant’s estate, right, title and interest in and to the Lease is free and clear of assignments, sublettings, liens and encumbrances; (b) the Lease is in full force and effect; (c) Tenant is presently in possession of the Premises and
has paid (and continues to pay) all Rent and any other charges or sums due under the Lease as the same become due and payable; (d) the Lease has not been modified, supplemented or amended in any way, except as may be set forth in this Third
Amendment; (e) Tenant is not aware of any actionable defenses, claims or set-offs under the Lease against rents or charges due or to become due thereunder; and (f) this Third Amendment has been duly authorized, executed and delivered by
and on behalf of Tenant and constitutes the valid and binding agreement of Tenant in accordance with the terms hereof. 
 10. Landlord
Representations. Landlord hereby represents and warrants to Tenant that as of the Effective Date: (a) all of Landlord’s estate, right, title and interest in and to the Lease is free and clear of assignments, sublettings, liens and
encumbrances; (b) the Lease is in full force and effect; (c) Landlord has all required rights, title and interest in the Building in order to fulfill its obligations hereunder; (d) the Lease has not been modified, supplemented or
amended in any way, except as may be set forth in this Third Amendment; (e) this Third Amendment has been duly authorized, executed and delivered by and on behalf of Landlord and constitutes the valid and binding agreement of Landlord in
accordance with the terms hereof. 
 11. Certified Access Specialist Inspection. In September 2012, the California State
Legislature enacted SB 1186 (California Civil Code §1938) requiring disclosure of whether leased premises have been inspected by a government-approved Certified Access Specialist and if so, whether the premises have been determined to be in
compliance with all applicable construction-related disability accessibility standards. Tenant hereby acknowledges that as of the date of this Lease, the Premises has not been inspected by a Certified Access Specialist. 

12. Miscellaneous. 
 12.1
Except as modified by this Third Amendment, all of the terms, conditions and provisions of the Existing Lease shall remain in full force and effect and are hereby ratified and confirmed. The Lease, as amended by this Third Amendment, may be amended
only by an agreement in writing, signed by the parties hereto. This Third Amendment is binding upon and shall inure to the benefit of the parties hereto, their respective agents, employees, representatives, officers, directors, divisions,
subsidiaries, affiliates, assigns, heirs, successors in interest and shareholders. 

  
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 12.2 Whether or not specifically amended by this Third Amendment, all of the terms and provisions
of the Existing Lease are hereby amended to the extent necessary to give effect to the purpose and intent of this Third Amendment. 
 12.3
The submission of this Third Amendment to Tenant for examination or execution does not create an option or constitute an offer to Tenant to amend the Existing Lease on the terms and conditions contained herein, and this Third Amendment shall not
become effective as an amendment to the Existing Lease unless and until the Additional Premises Commencement Date occurs. 
 12.4 This Third
Amendment contains the entire agreement of Landlord and Tenant with respect to the subject matter hereof It is understood that there are no oral agreements between Landlord and Tenant affecting the Lease as hereby amended, and this Third Amendment
supersedes and cancels any and all previous negotiations, representations, agreements and understandings, if any, between Landlord and Tenant and their respective agents with respect to the subject matter thereof, and none shall be used to interpret
or construe the Lease. Tenant acknowledges that all prior communications from Landlord or its agents are not and were not, and shall not be construed to be, representations or warranties of Landlord or its agents as to the matters communicated, and
have not and will not be relied upon by Tenant. 
 12.5 This Third Amendment may be executed in two (2) or more counterparts, each of
which shall be deemed an original and both of which together shall constitute one and the same agreement. This Third Amendment may be executed by a party’s signature transmitted by facsimile (“fax”) or by electronic mail in
portable document format (“pdf”), and copies of this Third Amendment executed and delivered by means of faxed or pdf signatures shall have the same force and effect as copies hereof executed and delivered with original signatures.
All parties hereto may rely upon faxed or pdf signatures as if such signatures were originals. Any party executing and delivering this Third Amendment by fax or pdf shall promptly thereafter deliver a counterpart of this Third Amendment containing
said party’s original signature. All parties hereto agree that a faxed or pdf signature page may be introduced into evidence in any proceeding arising out of or related to this Third Amendment as if it were an original signature page. 

  
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 IN WITNESS WHEREOF, the parties have caused this Third Amendment to Lease to be executed as of
the respective dates written below. 
  

			
	LANDLORD:
	
	BIG DOG HOLDINGS LLC,
	a Delaware limited liability company
		
	By:	 	 /s/ Jeff Shouger

	Name:	 	 Jeff Shouger

	Its:	 	 VP Finance

		
	Date:	 	 1/10/2014

	
	TENANT:
	
	IRHYTHM TECHNOLOGIES, INC.,
	a Delaware corporation
		
	By:	 	 /s/ Kevin M. King

	Name:	 	 Kevin M. King

	Its:	 	 President & CEO

		
	Date:	 	 1/8/2014

  
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 Exhibit A 

FLOOR PLAN OF ADDITIONAL PREMISES 

  
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 [Diagram intentionally omitted] 

 Exhibit B 

RESTATED BASIC LEASE INFORMATION 
  

			
	Lease Date:	  	April 30, 2008
		
	Date of Amendments:	  	 First Amendment to Lease dated February 26, 2010 (the “First Amendment”);

Second Amendment to Lease dated December 19, 2011 (the “Second Amendment”); and

Third Amendment to Lease dated January 8, 2014 the “Third Amendment”)

		
	Landlord:	  	 Big Dog Holdings LLC,
 a Delaware limited
liability company

		
	Tenant:	  	iRhythm Technologies, Inc., a Delaware corporation
		
	Premises:	  	Approximately 12,819 square feet of rentable area located on the third (3rd) floor of the Building, commonly referred to as Suite 380 (as shown on the Floor Plan attached to the
Original Lease as Exhibit A) and Suite 316 (as shown on the Floor Plan attached to the Third Amendment as Exhibit A).
		
	Lease Commencement Date:	  	May 14, 2008
		
	Third Amendment Commencement Date:	  	May 1, 2014
		
	Additional Premises Commencement Date:	  	January 15, 2014
		
	Expiration Date:	  	April 30, 2016
		
	Term:	  	The period from the Lease Commencement Date to the Expiration Date, except with respect to the Additional Premises, which shall commence on the Additional Premises Commencement Date.
		
	Base Rent for Second Renewal Term:	  	 For the period from May 1, 2012 through April 30, 2013:

 
 Annual Base Rent/Sq Ft. (Net of Electrical):

$42.00 per rentable square foot
  

Monthly Base Rent (Net of Electrical):

$39,389.00

  
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		  	 For the period from May 1, 2013 through April 30, 2014:

 
 Annual Base Rent/Sq Ft. (Net of Electrical):

$43.26 per rentable square foot
  

Monthly Base Rent (Net of Electrical):
 $40,570.67

		
	Suite 380 Base Rent as of Third Amendment Commencement Date:	  	 For the period from May 1, 2014 through April 30, 2015:

 
 Annual Base Rent/Sq Ft. (Net of Electrical):

$45.00 per rentable square foot
  

Monthly Base Rent (Net of Electrical):
 $42,202.50

 
 For the period from May 1, 2015 through April 30, 2016:

 
 Annual Base Rent/Sq Ft. (Net of Electrical):

$46.35 per rentable square foot
  

Monthly Base Rent (Net of Electrical):
 $43,468.58

		
	Suite 316 Base Rent as of Third Amendment Commencement Date:	  	 For the period from January 15, 2014 through January 14, 2015:

 
 Annual Base Rent/Sq Ft. (Net of Electrical):

$50.00 per rentable square foot
  

Monthly Base Rent (Net of Electrical):
 $6,520.83

 
 For the period from January 15, 2015 through April 30, 2016:

 
 Annual Base Rent/Sq Ft. (Net of Electrical):

$51.50 per rentable square foot
  

Monthly Base Rent (Net of Electrical):

$6,716.46

  
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	Operating Expense and Tax Base Year:	  	  
 From the Effective Date

through and until April 30, 2014: Calendar year 2012
  

From April 30, 2014 through
 and until the Expiration Date:
Calendar year 2014

		
	Tenant’s Percentage Share:	  	1.95%
		
	Permitted Use:	  	General office use, research, development and administrative and other office-related activities
		
	Security Deposit:	  	$146,169.99
		
	Building Directory Spaces:	  	One (1) directory strip
		
	Parking Spaces:	  	Two (2) unreserved parking spaces on the roof level of the Project parking garage
		
	Tenant’s Address:	  	 650 Townsend Street, Suite 380
 San Francisco,
California 94103
 Attention: Chief Financial Officer

		
	Landlord’s Address:	  	 c/o Cushman & Wakefield
 650 Townsend
Street, Suite 220
 San Francisco, CA 94103
  

With a copy to:
  

c/o Zynga Inc.
 699 Eighth Street

San Francisco, CA 94103
 Attn: VP, Workplace

  
 -3-EX-10.13

 Exhibit 10.13 

FOURTH AMENDMENT TO LEASE 

THIS FOURTH AMENDMENT TO LEASE (this “Fourth Amendment”) is dated for reference purposes only as of April 22, 2015, by
and between BIG DOG HOLDINGS LLC, a Delaware limited liability company (as successor in interest to 650 TOWNSEND ASSOCIATES LLC, a Delaware limited liability company) (“Landlord”), and IRHYTHM TECHNOLOGIES, INC., a Delaware
corporation (“Tenant”). 
 RECITALS 
  

	A.	Pursuant to that certain Office Lease dated as of April 30, 2008 (the “Original Lease”), as amended by each of (i) the First Amendment to Lease dated as of February 26, 2010 (the
“First Amendment”), (ii) the Second Amendment to Lease dated as of December 19, 2011 (the “Second Amendment”, and (iii) the Third Amendment to Lease dated as of January 8, 2014, (the
“Third Amendment”), collectively with the Original Lease (the “Existing Lease”), Tenant leases certain premises containing approximately 11,064 square feet of rentable area located on the third floor, commonly
referred to as Suite 380 and 1,565 square feet of rentable area located on the third floor, commonly referred to as Suite 316 (the “Premises”), in the building located at 650 Townsend Street, San Francisco, California (the
“Building”). 

  

	B.	Tenant wishes to vacate Suite 316 and expand the Premises to include approximately 5,579 square feet of rentable area located on the third floor, commonly referred to as Suites 345 (3,854 square feet) and 346 (1,725
square feet) (“Expansion Premises”) which Term expiration date shall be co-terminus with the lease of Suite 380 (i.e., April 30, 2016). 

  

	C.	Landlord and Tenant now desire to amend the Existing Lease to set forth the terms and conditions which will govern Tenant’s lease of the Expansion Premises. The Existing Lease, as amended by this Fourth Amendment,
is referred to herein as the “Lease”. 

 AGREEMENT 

NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt and sufficiency of which are
hereby acknowledged, Landlord and Tenant hereby agree as follows: 
 1. Use of Defined Terms; Recitals; Exhibits; Effective Date
Definitions. Unless otherwise defined herein or unless the context clearly requires otherwise, all capitalized terms used herein shall have the defined meanings ascribed to them in the Existing Lease. In the event of any conflict between the
terms of the Existing Lease and the terms of this Fourth Amendment, the terms (including, without limitation, any definitions) set forth in this Fourth Amendment shall supersede and control. 

1.1 Recitals. The recitals set forth above are incorporated herein and made a part of this Fourth Amendment to the same extent as if
set forth herein in full. 
 1.2 Exhibits. The exhibits attached hereto are incorporated herein and made a part of this Fourth
Amendment. Unless otherwise defined herein or unless the context clearly requires otherwise, all capitalized terms used in the exhibits attached hereto shall have the defined meanings ascribed to them in this Fourth Amendment. 

 1.3 Effective Date. Unless otherwise specifically provided herein, the provisions of this
Fourth Amendment shall be effective as of the date that this Fourth Amendment has been fully executed and delivered by both Tenant and Landlord (the “Effective Date”). 

2. Correction of Typographical Error; Rectification of Error in Calculation of Rent. The Third Amendment shall be amended to correct a
typographical error in the square footage for Suite 380 and Tenant shall be refunded or credited the difference in Base Rent and Operating Expenses. (Suite 380 is comprised of 11,064 square feet and Suite 316 is comprised of 1,565 square feet, which
totals 12,629 square feet; Tenant’s Percentage Share is 1.91%.) The Restated Basic Lease Information attached hereto shall be appended to the Third Amendment as Exhibit B. 

3. Basic Lease Information. The Basic Lease Information which applies to the Expansion Premises (i.e., Suites 345 and 346) is
attached as Exhibit A to this Fourth Amendment. The Restated Basic Lease Information which was agreed to as part of the Third Amendment (the “Third Amendment Basic Lease Information”) shall continue to apply to Suite 380 (as
amended under Section 2, above) except those provisions related to Suite 316, which will no longer apply to Suite 316 once Tenant provides ten (10) days written notice to Landlord (“Expansion Move Notice”) and vacates that
suite (the “Suite 316 Termination Date”). For the avoidance of doubt, after the Suite 316 Termination Date, Tenant’s Percentage Share set forth in the Third Amendment Basic Lease Information shall be reduced to 1.67% and the
Security Deposit set forth in the Third Amendment Basic Lease Information shall be reduced to $128,324.91, but the number of Parking Spaces shall not decrease. The respective Basic Lease Information documents shall serve as the operative summary of
the principal terms of the Lease, as amended by this Fourth Amendment, from the Effective Date through the expiration or earlier termination of the Lease. 

4. Expansion Premises. 

4.1 Lease of Expansion Premises. From and after the Commencement Date set forth in the Basic Lease Provisions applicable to the
Expansion Premises (the “Expansion Premises Commencement Date”), (i) Tenant shall lease and occupy the Expansion Premises pursuant to the terms of the Lease, and (ii) the Expansion Premises together with the existing
Premises (including only Suite 380 once Tenant has provided the Expansion Move Notice and vacated Suite 316) shall constitute the Premises for all purposes of the Lease, as amended hereby. Landlord and Tenant hereby acknowledge and agree that prior
to Tenant’s taking occupancy of the Expansion Premises, Landlord shall replace carpet with building standard carpet tiles with rubber base in and paint the walls of the Expansion Premises. Other than the foregoing, Landlord shall have no
obligation whatsoever to pay for or perform any improvements or alterations in the Expansion Premises or in the Building in connection with Landlord’s and Tenant’s entry into this Fourth Amendment. Any other improvements, alterations or
furnishings required or desired by Tenant in order to prepare the Expansion Premises for Tenant’s use and occupancy shall be Tenant’s responsibility and shall be made or installed by Tenant, if at all, in accordance with the provisions of
Article 10 of the Lease. 

  
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 5. Base Rent. 

5.1 Base Rent. Notwithstanding anything in the Existing Lease to the contrary, from and after the Effective Date as to subpart
(i) and after the Expansion Premises Commencement Date as to subpart (ii), and, unless earlier terminated as provided in the Lease, continuing through and until the Expiration Date, Tenant shall pay to Landlord as monthly Base Rent for the
Premises, the respective amounts of (i) the monthly Base Rent specified in the Restated Basic Lease Information attached to the Third Amendment (provided, however, with respect to Suite 316, only until such time that Tenant provides the
Expansion Move Notice and vacates such suite) and (ii) the monthly Base Rent specified in the Restated Basic Lease Information set forth in Exhibit A hereto. 

Security Deposit. The Security Deposit currently held by Landlord for Suite 316 (i.e., $17,845.08) shall be applied to the Expansion Premises Security Deposit
required under Exhibit A and Tenant shall cover the difference prior to occupying the Expansion Premises. The difference is calculated as follows: $27,895 - $17,845.08=$10,049.92 as Security Deposit for Suite 345 & 346). 

6. Relocation Right. Notwithstanding any provision of the Lease to the contrary, but subject to the terms and provisions of this
Section 6, Landlord may, upon at least thirty (30) prior written notice to the other party, relocate Tenant from the Expansion Premises to another location in the Building so long as (i) Landlord bears the reasonable cost of the move;
(ii) the relocation Premises shall be equal or greater than the square footage of the Expansion Premises and (iii) Tenant’s Base Rent shall not increase. 

7. Brokers. Landlord and Tenant each represent and warrant to the other that, except for Colliers International, representing
Landlord exclusively (the “Landlord’s Broker”), they have not made any agreement or taken any action which may cause anyone, other than Landlord’s Broker, to become entitled to a commission as a result of the transactions
contemplated by this Fourth Amendment, and each will indemnify and defend the other from any and all claims, actual or threatened, for compensation by any such third person by reason of such party’s breach of their representation or warranty
contained in this Section 7. Landlord, at its sole cost and expense, will pay any commission which may be due Landlord’s Broker pursuant to its separate agreement with Landlord’s Broker. 

8. Tenant’s Representations. Tenant hereby represents and warrants to Landlord that as of the Effective Date: (a) all of
Tenant’s estate, right, title and interest in and to the Lease is free and clear of assignments, sublettings, liens and encumbrances; (b) the Lease is in full force and effect; (c) Tenant is presently in possession of the Premises and
has paid (and continues to pay) all Rent and any other charges or sums due under the Lease as the same become due and payable; (d) the Lease has not been modified, supplemented or amended in any way, except as may be set forth in this Fourth
Amendment; (e) Tenant is not aware of any actionable defenses, claims or set-offs under the Lease against rents or charges due or to become due thereunder; and (f) this Fourth Amendment has been duly authorized, executed and delivered by
and on behalf of Tenant and constitutes the valid and binding agreement of Tenant in accordance with the terms hereof. 
 9. Landlord
Representations. Landlord hereby represents and warrants to Tenant that as of the Effective Date: (a) all of Landlord’s estate, right, title and interest in and to the Lease is free and clear of assignments, sublettings, liens and
encumbrances; (b) the Lease is in full force and effect; (c) Landlord has all required rights, title and interest in the Building in order to fulfill its obligations hereunder; (d) the Lease has not been modified, supplemented or
amended in any way, 

  
 3 

 
except as may be set forth in this Fourth Amendment; (e) this Fourth Amendment has been duly authorized, executed and delivered by and on behalf of Landlord and constitutes the valid and
binding agreement of Landlord in accordance with the terms hereof 
 10. Miscellaneous 

10.1 Except as modified by this Fourth Amendment, all of the terms, conditions and provisions of the Existing Lease shall remain in full force
and effect and are hereby ratified and confirmed. The Lease, as amended by this Fourth Amendment, may be amended only by an agreement in writing, signed by the parties hereto. This Fourth Amendment is binding upon and shall inure to the benefit of
the parties hereto, their respective agents, employees, representatives, officers, directors, divisions, subsidiaries, affiliates, assigns, heirs, successors in interest and shareholders. 

10.2 Whether or not specifically amended by this Fourth Amendment, all of the terms and provisions of the Existing Lease are hereby amended to
the extent necessary to give effect to the purpose and intent of this Fourth Amendment. 
 10.3 The submission of this Fourth Amendment to
Tenant for examination or execution does not create an option or constitute an offer to Tenant to amend the Existing Lease on the terms and conditions contained herein, and this Fourth Amendment shall not become effective as an amendment to the
Existing Lease unless and until the Effective Date occurs. 
 10.4 This Fourth Amendment contains the entire agreement of Landlord and
Tenant with respect to the subject matter hereof. It is understood that there are no oral agreements between Landlord and Tenant affecting the Lease as hereby amended, and this Fourth Amendment supersedes and cancels any and all previous
negotiations, representations, agreements and understandings, if any, between Landlord and Tenant and their respective agents with respect to the subject matter thereof, and none shall be used to interpret or construe the Lease. Tenant acknowledges
that all prior communications from Landlord or its agents are not and were not, and shall not be construed to be, representations or warranties of Landlord or its agents as to the matters communicated, and have not and will not be relied upon by
Tenant. 
 10.5 This Fourth Amendment may be executed in two (2) or more counterparts, each of which shall be deemed an original and
both of which together shall constitute one and the same agreement. This Fourth Amendment may be executed by a party’s signature transmitted by facsimile (“fax”) or by electronic mail in portable document format
(“pdf”), and copies of this Fourth Amendment executed and delivered by means of faxed or pdf signatures shall have the same force and effect as copies hereof executed and delivered with original signatures. All parties hereto may
rely upon faxed or pdf signatures as if such signatures were originals. Any party executing and delivering this Fourth Amendment by fax or pdf shall promptly thereafter deliver a counterpart of this Fourth Amendment containing said party’s
original signature. All parties hereto agree that a faxed or pdf signature page may be introduced into evidence in any proceeding arising out of or related to this Fourth Amendment as if it were an original signature page. 

10.6 Tenant shall not be required to restore any alterations that are in the Premises as of the date hereof. 

  
 4 

 IN WITNESS WHEREOF, the parties have caused this Fourth Amendment to Lease to be executed as of
the respective dates written below. 
  

							
	LANDLORD:
	
	BIG DOG HOLDINGS LLC,
	a Delaware limited liability company
				
	By:	 	Zynga Inc., its sole member	 		 	Zynga Legal
		 		 		 	Form Approved
				
	By:	 	  
	 		 	Digitally signed by Meredith-Lobel-
	Name:	 	Michelle Quejado	 		 	Angel
	Its:	 	VP of Finance	 		 	DN:cn=Meredith Lobel-Angel,
		 		 		 	o=Zynga Inc., ou=Legal,
	Date:	 	  
	 		 	email=mlobelangel@zynga.com, c=US
		 		 		 	Date: 2015.04.22 18:50:31 -07’00’
	TENANT:
	
	IRHYTHM TECHNOLOGIES, INC.,
	a Delaware corporation	 		 	
				
	By:	 	 /s/ Matthew C. Garrett
	 		 	
	Name:	 	Matthew C. Garrett	 		 	
	Its:	 	Chief Financial Officer	 		 	
				
	Date:	 	 4/24/15
	 		 	

  
 5

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