EX-10.13



 Exhibit 10.13 

THIS WARRANT AND THE SHARES ISSUABLE HEREUNDER HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR
THE SECURITIES LAWS OF ANY STATE AND, EXCEPT AS SET FORTH IN SECTIONS 5.3 AND 5.4 BELOW, MAY NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED UNLESS AND UNTIL REGISTERED UNDER SAID ACT AND LAWS OR, IN THE OPINION OF LEGAL COUNSEL IN FORM AND
SUBSTANCE SATISFACTORY TO THE ISSUER, SUCH OFFER, SALE, PLEDGE OR OTHER TRANSFER IS EXEMPT FROM SUCH REGISTRATION. 
 WARRANT TO PURCHASE
STOCK 
 Company: Ariosa Diagnostics, Inc., a Delaware corporation 

Number of Shares: As set forth in Paragraph A below 

Type/Series of Stock: Common Stock, $0.001 par value per share 

Warrant Price: $4.32 per Share, subject to adjustment 

Issue Date: December 20, 2013 

			
	Expiration Date:	  	December 19, 2023 See also Section 5.1(b).
	Credit Facility:	  	This Warrant to Purchase Stock (“Warrant”) is issued in connection with that certain Subordinated Loan and Security Agreement of even date herewith between Silicon Valley Bank and the Company (as amended and/or
modified and in effect from time to time, the “Loan Agreement”) and the participation therein of WestRiver Mezzanine Loans, LLC pursuant to an arrangement among Silicon Valley Bank, WestRiver Management, LLC and WestRiver Mezzanine
Loans, LLC.

 THIS WARRANT CERTIFIES THAT, for good and valuable consideration, WESTRIVER MEZZANINE LOANS, LLC
(together with any successor or permitted assignee or transferee of this Warrant or of any shares issued upon exercise hereof, “Holder”) is entitled to purchase up to the number of fully paid and non-assessable shares of the
above-stated Type/Series of Stock (the “Class”) of the above-named company (the “Company”) as determined pursuant to Paragraph A below, at the above-stated Warrant Price, all as set forth above and as
adjusted pursuant to Section 2 of this Warrant, subject to the provisions and upon the terms and conditions set forth in this Warrant. 

A. Number of Shares. This Warrant shall be exercisable for the Initial Shares, plus the Additional Shares, if any (collectively, and as
may be adjusted from time to time in accordance with the provisions of this Warrant, the “Shares”). 
 (1)
Initial Shares. As used herein, “Initial Shares” means 15,432 shares of the Class, subject to adjustment from time to time in accordance with the provisions of this Warrant. 

(2) Additional Shares. On and as of the date of each Term Loan Advance (as defined in the Loan Agreement), if any, made to the Company
in excess of $3,333,333.33 in aggregate Term Loan Advances, this Warrant automatically shall become exercisable for such number of additional shares of the Class as shall equal (a)(i) 0.04, multiplied by (ii) the portion of such Term Loan
Advance funded (which shall include indirect fundings by way of participations) by Holder or its affiliate, divided by (b) the Warrant Price in effect on and as of the date of such Term Loan Advance, subject to adjustment thereafter from time
to time in accordance with the provisions of this Warrant (all shares, if any, for which this Warrant shall become exercisable in accordance with this Paragraph A(2) are referred to herein collectively as the “Additional
Shares”). 

  
 1. 








 SECTION 1. EXERCISE. 

1.1 Method of Exercise. Holder may at any time and from time to time exercise this Warrant, in whole or in part, by delivering to the
Company the original of this Warrant together with a duly executed Notice of Exercise in substantially the form attached hereto as Appendix 1 and, unless Holder is exercising this Warrant pursuant to a cashless exercise set forth in
Section 1.2, a check, wire transfer of same-day funds (to an account designated by the Company), or other form of payment acceptable to the Company for the aggregate Warrant Price for the Shares being purchased. 

1.2 Cashless Exercise. On any exercise of this Warrant, in lieu of payment of the aggregate Warrant Price in the manner as specified in
Section 1.1 above, but otherwise in accordance with the requirements of Section 1.1, Holder may elect to receive Shares equal to the value of this Warrant, or portion hereof as to which this Warrant is being exercised. Thereupon, the
Company shall issue to the Holder such number of fully paid and non-assessable Shares as are computed using the following formula: 
  

					
		 	X =	  	Y(A-B)/A
			
	where:	 		  	
			
		 	X =	  	the number of Shares to be issued to the Holder;
			
		 	Y =	  	the number of Shares with respect to which this Warrant is being exercised (inclusive of the Shares surrendered to the Company in payment of the aggregate Warrant Price);
			
		 	A =	  	the Fair Market Value (as determined pursuant to Section 1.3 below) of one Share; and
			
		 	B =	  	the Warrant Price.

 1.3 Fair Market Value. If shares of the Class are then traded or quoted on a nationally recognized
securities exchange, inter-dealer quotation system or over-the-counter market (a “Trading Market”), the fair market value of a Share shall be the closing price or last sale price of a share of the Class reported for the
Business Day immediately before the date on which Holder delivers this Warrant together with its Notice of Exercise to the Company. If shares of the Class are not then traded in a Trading Market, the Board of Directors of the Company shall determine
the fair market value of a Share in its reasonable good faith judgment. 
 1.4 Delivery of Certificate and New Warrant. Within a
reasonable time after Holder exercises this Warrant in the manner set forth in Section 1.1 or 1.2 above, the Company shall deliver to Holder a certificate representing the Shares issued to Holder upon such exercise and, if this Warrant has not
been fully exercised and has not expired, a new warrant of like tenor representing the Shares not so acquired. 
 1.5 Replacement of
Warrant. On receipt of evidence reasonably satisfactory to the Company of the loss, theft, destruction or mutilation of this Warrant and, in the case of loss, theft or destruction, on delivery of an indemnity agreement reasonably satisfactory in
form, substance and amount to the Company or, in the case of mutilation, on surrender of this Warrant to the Company for cancellation, the Company shall, within a reasonable time, execute and deliver to Holder, in lieu of this Warrant, a new warrant
of like tenor and amount. 

  
 2. 








 1.6 Treatment of Warrant Upon Acquisition of Company. 

(a) Acquisition. For the purpose of this Warrant, “Acquisition” means any transaction or series of related
transactions involving: (i) the sale, lease, exclusive license, or other disposition of all or substantially all of the assets of the Company (ii) any merger or consolidation of the Company into or with another person or entity (other than
a merger or consolidation effected exclusively to change the Company’s domicile), or any other corporate reorganization, in which the stockholders of the Company in their capacity as such immediately prior to such merger, consolidation or
reorganization, own less than a majority of the Company’s (or the surviving or successor entity’s) outstanding voting power immediately after such merger, consolidation or reorganization (or, if such Company stockholders beneficially own a
majority of the outstanding voting power of the surviving or successor entity as of immediately after such merger, consolidation or reorganization, such surviving or successor entity is not the Company); or (iii) any sale or other transfer by
the stockholders of the Company of shares representing at least a majority of the Company’s then-total outstanding combined voting power. 

(b) Treatment of Warrant at Acquisition. In the event of an Acquisition in which the consideration to be received by the Company’s
stockholders consists solely of cash, solely of Marketable Securities or a combination of cash and Marketable Securities (a “Cash/Public Acquisition”), and the fair market value of one Share as determined in accordance with
Section 1.3 above would be greater than the Warrant Price in effect on such date immediately prior to such Cash/Public Acquisition, and Holder has not exercised this Warrant pursuant to Section 1.1 above as to all Shares, then this Warrant
shall automatically be deemed to be Cashless Exercised pursuant to Section 1.2 above as to all Shares effective immediately prior to and contingent upon the consummation of a Cash/Public Acquisition. In connection with such Cashless Exercise,
Holder shall be deemed to have restated each of the representations and warranties in Section 4 of the Warrant as the date thereof and the Company shall promptly notify the Holder of the number of Shares (or such other securities) issued upon
exercise. In the event of a Cash/Public Acquisition where the fair market value of one Share as determined in accordance with Section 1.3 above would be less than the Warrant Price in effect immediately prior to such Cash/Public Acquisition,
then this Warrant will expire immediately prior to the consummation of such Cash/Public Acquisition. 
 (c) The Company shall provide Holder
with written notice of its request relating to the Cash/Public Acquisition (together with such reasonable information as Holder may reasonably require regarding the treatment of this Warrant in connection with such contemplated Cash/Public
Acquisition giving rise to such notice), which is to be delivered to Holder not less than seven (7) Business Days prior to the closing of the proposed Cash/Public Acquisition. In the event the Company does not provide such notice, then if,
immediately prior to the Cash/Public Acquisition, the fair market value of one Share (or other security issuable upon the exercise hereof) as determined in accordance with Section 1.3 above would be greater than the Warrant Price in effect on
such date, then this Warrant shall automatically be deemed on and as of such date to be exercised pursuant to Section 1.2 above as to all Shares (or such other securities) for which it shall not previously have been exercised, and the Company
shall promptly notify the Holder of the number of Shares (or such other securities) issued upon such exercise to the Holder and Holder shall be deemed to have restated each of the representations and warranties in Section 4 of the Warrant as
the date thereof. 
 (d) Upon the closing of any Acquisition other than a Cash/Public Acquisition, the acquiring, surviving or successor
entity shall assume the obligations of this Warrant, and this Warrant shall thereafter be exercisable for the same securities and/or other property as would have been paid for 

  
 3. 








 
the Shares issuable upon exercise of the unexercised portion of this Warrant as if such Shares were outstanding on and as of the closing of such Acquisition, subject to further adjustment from
time to time in accordance with the provisions of this Warrant. 
 (e) As used in this Warrant, “Marketable
Securities” means securities meeting all of the following requirements: (i) the issuer thereof is then subject to the reporting requirements of Section 13 or Section 15(d) of the Securities Exchange Act of 1934, as
amended (the “Exchange Act”), and is then current in its filing of all required reports and other information under the Act and the Exchange Act; (ii) the class and series of shares or other security of the issuer that
would be received by Holder in connection with the Acquisition were Holder to exercise this Warrant on or prior to the closing thereof is then traded in Trading Market, and (iii) following the closing of such Acquisition, Holder would not be
restricted from publicly re-selling all of the issuer’s shares and/or other securities that would be received by Holder in such Acquisition were Holder to exercise this Warrant in full on or prior to the closing of such Acquisition, except to
the extent that any such restriction (x) arises solely under federal or state securities laws, rules or regulations, and (y) does not extend beyond six (6) months from the closing of such Acquisition. 

SECTION 2. ADJUSTMENTS TO THE SHARES AND WARRANT PRICE. 

2.1 Stock Dividends, Splits, Etc. If the Company declares or pays a dividend or distribution on the outstanding shares of the Class
payable in additional shares of the Class or other securities or property (other than cash), then upon exercise of this Warrant, for each Share acquired, Holder shall receive, without additional cost to Holder, the total number and kind of
securities and property which Holder would have received had Holder owned the Shares of record as of the date the dividend or distribution occurred. If the Company subdivides the outstanding shares of the Class by reclassification or otherwise into
a greater number of shares, the number of Shares purchasable hereunder shall be proportionately increased and the Warrant Price shall be proportionately decreased. If the outstanding shares of the Class are combined or consolidated, by
reclassification or otherwise, into a lesser number of shares, the Warrant Price shall be proportionately increased and the number of Shares shall be proportionately decreased. 

2.2 Reclassification, Exchange, Combinations or Substitution. Upon any event whereby all of the outstanding shares of the Class are
reclassified, exchanged, combined, substituted, or replaced for, into, with or by Company securities of a different class and/or series, then from and after the consummation of such event, this Warrant will be exercisable for the number, class and
series of Company securities that Holder would have received had the Shares been outstanding on and as of the consummation of such event, and subject to further adjustment thereafter from time to time in accordance with the provisions of this
Warrant. The provisions of this Section 2.2 shall similarly apply to successive reclassifications, exchanges, combinations substitutions, replacements or other similar events. 

2.3 No Fractional Share. No fractional Share shall be issuable upon exercise of this Warrant and the number of Shares to be issued
shall be rounded down to the nearest whole Share. If a fractional Share interest arises upon any exercise of the Warrant, the Company shall eliminate such fractional Share interest by paying Holder in cash the amount computed by multiplying the
fractional interest by (i) the fair market value (as determined in accordance with Section 1.3 above) of a full Share, less (ii) the then-effective Warrant Price. 

2.4 Notice/Certificate as to Adjustments. Upon each adjustment of the Warrant Price, Class and/or number of Shares, the Company, at the
Company’s expense, shall notify Holder in writing within a reasonable time setting forth the adjustments to the Warrant Price, Class and/or number of Shares and facts upon which such adjustment is based. The Company shall, upon written request
from Holder, furnish Holder with a certificate of its Chief Financial Officer, including computations of such adjustment and the Warrant Price, Class and number of Shares in effect upon the date of such adjustment. 

  
 4. 








 SECTION 3. REPRESENTATIONS AND COVENANTS OF THE COMPANY. 

3.1 Representations and Warranties. The Company represents and warrants to, and agrees with, the Holder as follows: 

(a) The initial Warrant Price referenced on the first page of this Warrant is not greater than the fair market value of a share of the Class
as determined by the most recent to have occurred of (i) a valuation of the Company’s stock for purposes of its compliance with Section 409A of the Internal Revenue Code of 1986, as amended, and (ii) a determination by the
Company’s Board of Directors in connection with the Company’s grant of employee incentive stock options. 
 (b) All Shares which
may be issued upon the exercise of this Warrant shall, upon issuance, be duly authorized, validly issued, fully paid and non-assessable, and free of any liens and encumbrances except for restrictions on transfer provided for herein or under
applicable federal and state securities laws. The Company covenants that it shall at all times cause to be reserved and kept available out of its authorized and unissued capital stock such number of shares of the Class and other securities as will
be sufficient to permit the exercise in full of this Warrant. 
 (c) The Company’s capitalization table attached hereto as Schedule 1
is true and complete, in all material respects, as of the Issue Date. 
 3.2 Notice of Certain Events. If the Company proposes at any
time to: 
 (a) declare any dividend or distribution upon the outstanding shares of the Class, whether in cash, property, stock, or other
securities and whether or not a regular cash dividend; 
 (b) offer for subscription or sale pro rata to the holders of the outstanding
shares of the Class any additional shares of any class or series of the Company’s stock (other than pursuant to contractual pre-emptive rights); 

(c) effect any reclassification, exchange, combination, substitution, reorganization or recapitalization of the outstanding shares of the
Class; 
 (d) effect an Acquisition or to liquidate, dissolve or wind up; or 

(e) effect its initial, underwritten offering and sale of its securities to the public pursuant to an effective registration statement under
the Act (the “IPO”); 
 then, in connection with each such event, the Company shall give Holder: 

(1) in the case of the matters referred to in (a) and (b) above, at least seven (7) Business Days prior written
notice of the earlier to occur of the effective date thereof or the date on which a record will be taken for such dividend, distribution, or subscription rights (and specifying the date on which the holders of outstanding shares of the Class will be
entitled thereto) or for determining rights to vote, if any; 
 (2) in the case of the matters referred to in (c) and
(d) above at least seven (7) Business Days prior written notice of the date when the same will take place (and 

  
 5. 








 
specifying the date on which the holders of outstanding shares of the Class will be entitled to exchange their shares for the securities or other property deliverable upon the occurrence of such
event and such reasonable information as Holder may reasonably require regarding the treatment of this Warrant in connection with such event giving rise to the notice); and 

(3) with respect to the IPO, at least seven (7) Business Days prior written notice of the date on which the Company
proposes to file its registration statement in connection therewith. 
 The Company will also provide information requested by Holder that is reasonably
necessary to enable Holder to comply with Holder’s accounting or reporting requirements. 
 SECTION 4. REPRESENTATIONS,
WARRANTIES OF THE HOLDER. 
 The Holder represents and warrants to the Company as follows: 

4.1 Purchase for Own Account. This Warrant and the Shares to be acquired upon exercise of this Warrant by Holder are being acquired for
investment for Holder’s account, not as a nominee or agent, and not with a view to the public resale or distribution within the meaning of the Act. Holder also represents that it has not been formed for the specific purpose of acquiring this
Warrant or the Shares. 
 4.2 Disclosure of Information. Holder is aware of the Company’s business affairs and financial
condition and has received or has had full access to all the information it considers necessary or appropriate to make an informed investment decision with respect to the acquisition of this Warrant and its underlying securities. Holder further has
had an opportunity to ask questions and receive answers from the Company regarding the terms and conditions of the offering of this Warrant and its underlying securities and to obtain additional information (to the extent the Company possessed such
information or could acquire it without unreasonable effort or expense) necessary to verify any information furnished to Holder or to which Holder has access. 

4.3 Investment Experience. Holder understands that the purchase of this Warrant and its underlying securities involves substantial
risk. Holder has experience as an investor in securities of companies in the development stage and acknowledges that Holder can bear the economic risk of such Holder’s investment in this Warrant and its underlying securities and has such
knowledge and experience in financial or business matters that Holder is capable of evaluating the merits and risks of its investment in this Warrant and its underlying securities and/or has a preexisting personal or business relationship with the
Company and certain of its officers, directors or controlling persons of a nature and duration that enables Holder to be aware of the character, business acumen and financial circumstances of such persons. 

4.4 Accredited Investor Status. Holder is an “accredited investor” within the meaning of Regulation D promulgated under the
Act. 
 4.5 The Act. Holder understands that this Warrant and the Shares issuable upon exercise hereof have not been registered under
the Act in reliance upon a specific exemption therefrom, which exemption depends upon, among other things, the bona fide nature of the Holder’s investment intent as expressed herein. Holder understands that this Warrant and the Shares issued
upon any exercise hereof must be held indefinitely unless subsequently registered under the Act and qualified under applicable state securities laws, or unless exemption from such registration and qualification are otherwise available. Holder is
aware of the provisions of Rule 144 promulgated under the Act. 

  
 6. 








 4.6 No Voting Rights. Holder, as a Holder of this Warrant, will not have any voting rights
until the exercise of this Warrant. 
 SECTION 5. MISCELLANEOUS. 

5.1 Term; Automatic Cashless Exercise Upon Expiration. 

(a) Term. Subject to the provisions of Section 1.6 above, this Warrant is exercisable in whole or in part at any time and from
time to time on or before 6:00 PM, Pacific time, on the Expiration Date and shall be void thereafter. 
 (b) Automatic Cashless Exercise
upon Expiration. In the event that, upon the Expiration Date, the fair market value of one Share as determined in accordance with Section 1.3 above is greater than the Warrant Price in effect on such date, then this Warrant shall
automatically be deemed on and as of such date to be exercised pursuant to Section 1.2 above as to all Shares for which it shall not previously have been exercised, and the Company shall, within a reasonable time, deliver a certificate
representing the Shares issued upon such exercise to Holder. 
 5.2 Legends. Each certificate evidencing Shares shall be imprinted
with a legend in substantially the following form: 
 THE SHARES EVIDENCED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE SECURITIES
ACT OF 1933, AS AMENDED (THE “ACT”), OR THE SECURITIES LAWS OF ANY STATE AND, EXCEPT AS SET FORTH IN THAT CERTAIN WARRANT TO PURCHASE STOCK ISSUED BY THE ISSUER TO WESTRIVER MEZZANINE LOANS, LLC DATED DECEMBER 20, 2013, MAY
NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED UNLESS AND UNTIL REGISTERED UNDER SAID ACT AND LAWS OR, IN THE OPINION OF LEGAL COUNSEL IN FORM AND SUBSTANCE SATISFACTORY TO THE ISSUER, SUCH OFFER, SALE, PLEDGE OR OTHER TRANSFER IS EXEMPT
FROM SUCH REGISTRATION. 
 5.3 Compliance with Securities Laws on Transfer. This Warrant and the Shares issued upon exercise of this
Warrant may not be transferred or assigned in whole or in part except in compliance with applicable federal and state securities laws by the transferor and the transferee (including, without limitation, the delivery of investment representation
letters and legal opinions reasonably satisfactory to the Company, as reasonably requested by the Company). The Company shall not require Holder to provide an opinion of counsel if the transfer is an affiliate of Holder, provided that any such
transferee is an “accredited investor” as defined in Regulation D promulgated under the Act. Additionally, the Company shall also not require an opinion of counsel if there is no material question as to the availability of Rule 144
promulgated under the Act. 
 5.4 Transfer Procedure. Subject to the provisions of Section 5.3 and upon providing the Company
with written notice, Holder may transfer all or part of this Warrant or the Shares issued upon exercise of this Warrant to any transferee, provided, however, in connection with any such transfer, Holder will give the Company notice of the portion of
the Warrant and/or Shares being transferred with the name, address and taxpayer identification number of the transferee and Holder will surrender this 

  
 7. 








 
Warrant to the Company for reissuance to the transferee(s) (and Holder if applicable); and provided further, that any transferee shall agree in writing with the Company to be bound by all of the
terms and conditions of this Warrant and make the representations, warranties and covenants set forth in Section 4 hereof. Notwithstanding any contrary provision herein, at all times prior to the IPO, Holder may not, without the Company’s
prior written consent, transfer this Warrant or any portion hereof, or any Shares issued upon any exercise hereof, to any person or entity who directly competes with the Company, except in connection with an Acquisition of the Company by such a
direct competitor. 
 5.5 Notices. All notices and other communications hereunder from the Company to the Holder, or vice versa,
shall be deemed delivered and effective (i) when given personally, (ii) on the third (3’1) Business Day after being mailed by first-class registered or certified mail, postage prepaid, (iii) upon actual receipt if given by
facsimile or electronic mail and such receipt is confirmed in writing by the recipient, or (iv) on the first Business Day following delivery to a reliable overnight courier service, courier fee prepaid, in any case at such address as may have
been furnished to the Company or Holder, as the case may be, in writing by the Company or such Holder from time to time in accordance with the provisions of this Section 5.5. All notices to Holder shall be addressed as follows until the Company
receives notice of a change of address in connection with a transfer or otherwise: 
 WestRiver Mezzanine Loans, LLC 

c/o WestRiver Management, LLC 

3720 Carillon Point 
 Kirkland,
Washington 98033-7455 
 Attention: Erik J. Anderson 

Telephone: (425) 576-9850 

Email: enderson@westrivercap.com 

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

Perkins Coie LLP 
 1201 Third
Avenue, Suite 4800 
 Seattle, Washington 98101-3099 

Attention: David C. Clarke 

Telephone: (206) 359-8612 

Email: dclarke@perkinscoie.com 

Notice to the Company shall be addressed as follows until Holder receives notice of a change in address: 

Ariosa Diagnostics, Inc. 
 Attn:
Chief Financial Officer 
 5945 Optical Court 

San Jose, CA 95138 
 Telephone:
(408) 229-7522 
 Facsimile: 

Email: DPuckett@ariosadx.com 

5.6 Waiver. This Warrant and any term hereof may be changed, waived, discharged or terminated (either generally or in a particular
instance and either retroactively or prospectively) only by an instrument in writing signed by the party against which enforcement of such change, waiver, discharge or termination is sought. 

  
 8. 








 5.7 Attorneys’ Fees. In the event of any dispute between the parties concerning the
terms and provisions of this Warrant, the party prevailing in such dispute shall be entitled to collect from the other party all costs incurred in such dispute, including reasonable attorneys’ fees. 

5.8 Counterparts; Facsimile/Electronic Signatures. This Warrant may be executed in counterparts, all of which together shall constitute
one and the same agreement. Any signature page delivered electronically or by facsimile shall be binding to the same extent as an original signature page with regards to any agreement subject to the terms hereof or any amendment thereto. 

5.9 Governing Law. This Warrant shall be governed by and construed in accordance with the laws of the State of California, without
giving effect to its principles regarding conflicts of law. 
 5.10 Headings. The headings in this Warrant are for purposes of
reference only and shall not limit or otherwise affect the meaning of any provision of this Warrant. 
 5.11 Business Days.
“Business Day” is any day that is not a Saturday, Sunday or a day on which WestRiver Mezzanine Loans, LLC is closed. 

[Remainder of page left blank intentionally] 

[Signature page follows] 

  
 9. 








 IN WITNESS WHEREOF, the parties have caused this Warrant to Purchase Stock to be executed by
their duly authorized representatives effective as of the Issue Date written above. 
  

			
	“COMPANY”
	
	ARIOSA DIAGNOSTICS, INC.
		
	By:	 	 /s/ Ken Song

	Name:	 	 Ken Song

		 	(Print)
	Title:	 	CEO
	
	“HOLDER”
	
	WESTRIVER MEZZANINE LOANS, LLC
		
	By:	 	WestRiver Management, LLC,
		 	its Managing Member
		
	By:	 	 /s/ Erik J. Anderson

		 	Erik J. Anderson, Manager








 APPENDIX 1 

NOTICE OF EXERCISE 

1. The undersigned Holder hereby exercises its right to purchase
                 shares of the Common/Series                  Preferred
[circle one] Stock of                      (the “Company”) in accordance with the attached Warrant To Purchase Stock,
and tenders payment of the aggregate Warrant Price for such shares as follows: 
  

					
		 	 ̈	  	check in the amount of $             herewith payable to order of the Company enclosed herewith
			
		 	 ̈	  	Wire transfer of immediately available funds to the Company’s account
			
		 	 ̈	  	Cashless Exercise pursuant to Section 1.2 of the Warrant
			
		 	 ̈	  	Other [Describe]
                                         
                                         
      

 2. Please issue a certificate or certificates representing the Shares in the name specified below: 

 

					
		 	  

		 	    Holder’s Name
		
		 	  

		
	 	 	  

		 	     (Address)


 3. By its execution below and for the benefit of the Company, Holder hereby restates each of the
representations and warranties in Section 4 of the Warrant to Purchase Stock as of the date hereof. 
  

			
	 HOLDER:

	
	  

		
	 By:
	 	  

		
	 Name:
	 	  

		
	 Title:
	 	  

		
	 (Date):
	 	  



 Appendix 1 







 SCHEDULE 1 

Company Capitalization Table 

See attached 
 Schedule 1 







 Report Generated as of 12/11/2013 10:57:40 AM PST 

Ariosa Diagnostics, Inc. 

Fully Diluted Capitalization Table — Summary 

As of 12/11/2013 
  

									
	 	  	CSE Shares*	 	  	Total Fully Diluted
Shares	 
	 COMMON STOCK (Authorized: 38,000,000)
	  				  			
	 Issued and Outstanding
	  	 	4,293,585	  	  	 	4,293,585	  
	 PREFERRED STOCK (Authorized: 23,341,881)
	  				  			
	 SERIES A Preferred Stock (Authorized: 3,676,856)
	  	 	3,676,856	  	  			
	 SERIES B Preferred Stock (Authorized: 10,857,140)
	  	 	10,756,300	  	  			
	 SERIES C Preferred Stock (Authorized: 8,807,885)
	  	 	8,725,104	  	  	 	23,158,260	  
	 WARRANTS
	  				  			
	 SERIES B Preferred Stock
	  	 	100,840	  	  	 	100,840	  
	 2009 EIP (Reserved: 6,235,693)
	  				  			
	 Shares Issuable Under Plan:
	  				  			
	 Options and/or SPRs Issued and Outstanding
	  	 	3,962,940	  	  			
	 Options and/or SPRs Committed for Issuance
	  	 	0	  	  			
	 Shares Remaining for Issuance Under Plan
	  	 	-42,812	  	  	 	3,920,128	  
	 Reserved in Plan
	  	 	6,235,693	  	  			
	 Options and/or SPRs Exercised
	  	 	2,315,565	  	  			
		  	  
	  
	 	  	  
	  
	 
	 Total shares issued and outstanding, including shares committed for insurance and employee reserves, assuming conversion
of all
	  				  	 	31,472,813	  
		  	  
	  
	 	  	  
	  
	 

 Footnotes: 
 CSE
Shares* Common Stock Equivalent (CSE) shares reflects the Common Stock Issuable for the security type (option, stock, warrant, CPN) after the appropriate conversion ratio is applied with regard to parameters set for aggregation/rounding
for each class/series. 
 Reserved reflects the Current Reserved Amount; if the option plan has shares pouring in from another plan, this number will change
as new shares are poured in from the old plan. 
  

									
	Fully-Diluted Ownership	  				  			
	 	  	Number of Shares	 	  	Percent%	 
	 Common Stock
	  	 	4,293,585	  	  	 	13.64	% 
	 SERIES A Preferred Stock
	  	 	3,676,856	  	  	 	11.68	% 
	 SERIES B Preferred Stock
	  	 	10,756,300	  	  	 	34.18	% 
	 SERIES C Preferred Stock
	  	 	8,725,104	  	  	 	27.72	% 
	 SERIES B Preferred Stock Warrants
	  	 	100,840	  	  	 	0.32	% 
	 Options and/or SPRs issued and outstanding under plan - 2009 EIP
	  	 	3,962,940	  	  	 	12.59	% 
	 Committed for Issuance - 2009 EIP
	  	 	0	  	  	 	0.00	% 
	 Unissued Reserve - 2009 EIP
	  	 	-42,812	  	  	 	-0.14	% 
		  	  
	  
	 	  	  
	  
	 
	 TOTAL
	  	 	31,472,813	  	  	 	100	%