Document:

Form of Amended and Restated Warrant to purchase Series 2 preferred stock

 Exhibit 4.3 

THIS WARRANT AND THE UNDERLYING SECURITIES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR UNDER
THE SECURITIES LAWS OF ANY STATE. THESE SECURITIES MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED, PLEDGED OR HYPOTHECATED EXCEPT AS PERMITTED UNDER THE ACT AND APPLICABLE STATE SECURITIES LAWS IN ACCORDANCE WITH APPLICABLE REGISTRATION
REQUIREMENTS OR AN EXEMPTION THEREFROM. THE ISSUER OF THESE SECURITIES MAY REQUIRE AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE ISSUER THAT SUCH OFFER, SALE, TRANSFER, PLEDGE OR HYPOTHECATION OTHERWISE COMPLIES WITH THE ACT AND ANY
APPLICABLE STATE SECURITIES LAWS. THIS WARRANT MUST BE SURRENDERED TO THE COMPANY OR ITS TRANSFER AGENT AS A CONDITION PRECEDENT TO THE SALE, TRANSFER, PLEDGE OR HYPOTHECATION OF ANY INTEREST IN ANY OF THE SECURITIES REPRESENTED HEREBY. 

AMENDED AND RESTATED WARRANT TO PURCHASE PREFERRED STOCK 

of 
 IMPINJ, INC. 

Dated as of July 13, 2012 

Void after the date specified in Section 8 

No. WAR-         

THIS CERTIFIES THAT, for value received,
                    , or its registered assigns (the “Holder”), is entitled, subject to the provisions and upon the terms and
conditions set forth herein, to purchase from Impinj, Inc., a Delaware corporation (the “Company”), Shares (as defined below), in the amounts, at such times and at the price per share set forth in Section 1. The term
“Warrant” as used herein shall include this Warrant and any warrants delivered in substitution or exchange therefor as provided herein. This Warrant is issued in connection with the amendment on July 13, 2012 of the
subordinated, secured, convertible, promissory note (the “Related Note”), which such Related Note was originally issued to Holder pursuant to that certain Note and Warrant Purchase Agreement, dated as of June 30, 2010,
by and among the Company and the Investors described therein (the “Purchase Agreement”) in the original principal amount of $         (“Original Principal
Amount”). This Warrant is one of a series of warrants referred to as the “Warrants” in the Purchase Agreement. 

The following is a statement of the rights of the Holder and the conditions to which this Warrant is subject, and to which Holder, by
acceptance of this Warrant, agrees: 
 1. Number and Price of Shares; Exercise Period. 

(a) Definition of Shares. “Shares” shall mean shares of Series 2 Preferred Stock issued pursuant to the
Qualified Financing (as defined in the Related Note) consummated on July 13, 2012. 
 (b) Number of Shares. Subject to
any previous exercise of the Warrant, the Holder shall have the right to purchase up to                  shares prior to (or in connection with) the expiration of this
Warrant as provided in Section 8. 
 (c) Exercise Price. The exercise price per Share shall be equal to $0.7765 (the
“Exercise Price”). 
 (d) Exercise Period. This Warrant shall be exercisable, in whole or in part,
during the period commencing on July 13, 2012. The exercise period will end on the expiration of the Warrant pursuant to Section 8 below. 

 2. Exercise of the Warrant. 

(a) Exercise. The purchase rights represented by this Warrant may be exercised at the election of the Holder, in whole or in
part, in accordance with Section 1, by: 
 (i) the tender to the Company at its principal office (or such other office or agency as
the Company may designate) of a notice of exercise in the form of Exhibit A (the “Notice of Exercise”), duly completed and executed by or on behalf of the Holder, together with the surrender of this Warrant; and 

(ii) the payment to the Company of an amount equal to (x) the Exercise Price multiplied by (y) the number of Shares being
purchased, by wire transfer or certified, cashier’s or other check acceptable to the Company and payable to the order of the Company. 

(b) Net Issue Exercise. In lieu of exercising this Warrant pursuant to Section 2(a)(ii), if the fair market value of one
Share is greater than the Exercise Price (at the date of calculation as set forth below), the Holder may elect to receive a number of Shares equal to the value of this Warrant (or of any portion of this Warrant being canceled) by surrender of this
Warrant at the principal office of the Company (or such other office or agency as the Company may designate) together with a properly completed and executed Notice of Exercise reflecting such election, in which event the Company shall issue to the
Holder that number of Shares 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 purchasable under this Warrant or, if only a portion of the Warrant is being exercised, the portion of the Warrant being canceled (at the date of such calculation)
			
	A	  	=	  	The fair market value of one Share (at the date of such calculation)
			
	B	  	=	  	The Exercise Price (as adjusted to the date of such calculation)

 For purposes of the calculation above, the fair market value of one Share shall be determined by the Board of
Directors of the Company, acting in good faith; provided, however, that if the Warrant is exercised in connection with the Company’s initial public offering of common stock, the fair market value per Share shall be the product of
(x) the per share offering price to the public of the Company’s initial public offering and (y) the number of shares of common stock into which each Share is convertible at the time of such exercise, as applicable. 

 (c) Stock Certificates. The rights under this Warrant shall be deemed to have been
exercised and the Shares issuable upon such exercise shall be deemed to have been issued immediately prior to the close of business on the date this Warrant is exercised in accordance with its terms, and the person entitled to receive the Shares
issuable upon such exercise shall be treated for all purposes as the holder of record of such Shares as of the close of business on such date. As promptly as reasonably practicable on or after such date, the Company shall issue and deliver to the
person or persons entitled to receive the same a certificate or certificates for that number of shares issuable upon such exercise. In the event that the rights under this Warrant are exercised in part and have not expired, the Company shall execute
and deliver a new Warrant reflecting the number of Shares that remain subject to this Warrant. 
 (d) No Fractional Shares or
Scrip. No fractional shares or scrip representing fractional shares shall be issued upon the exercise of the rights under this Warrant. In lieu of such fractional share to which the Holder would otherwise be entitled, the Company shall make
a cash payment equal to the Exercise Price multiplied by such fraction. 
 (e) Conditional Exercise. The Holder may
exercise this Warrant conditioned upon (and effective immediately prior to) consummation of any transaction that would cause the expiration of this Warrant pursuant to Section 8 by so indicating in the notice of exercise. 

(f) Automatic Exercise. If the Holder of this Warrant has not elected to exercise this Warrant prior to expiration of this
Warrant pursuant to Section 8, then this Warrant shall automatically (without any act on the part of the Holder) be exercised pursuant to Section 2(b) effective immediately prior to the expiration of the Warrant to the extent such net
issue exercise would result in the issuance of Shares, unless Holder shall earlier provide written notice to the Company that the Holder desires that this Warrant expire unexercised. If this Warrant is automatically exercised, the Company shall
notify the Holder of the automatic exercise as soon as reasonably practicable, and the Holder shall surrender the Warrant to the Company in accordance with the terms hereof. 

(g) Reservation of Stock. The Company agrees during the term the rights under this Warrant are exercisable to reserve and keep
available a sufficient number of Shares (and shares of common stock for issuance on conversion of such Shares) for the purpose of effecting the exercise of this Warrant; and if at any time the number of authorized but unissued Shares (and shares of
common stock for issuance on conversion of such Shares) shall not be sufficient for purposes of the exercise of this Warrant in accordance with its terms and the conversion of the Shares, without limitation of such other remedies as may be available
to the Holder, the Company will take such corporate action as may, in the opinion of counsel, be necessary to increase the number of authorized and unissued Shares (and shares of common stock for issuance on conversion of such Shares) to a number of
Shares as shall be sufficient for such purposes. 
 3. Replacement of the Warrant. Subject to the 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 and substance to the Company or, in the
case of mutilation, on surrender and cancellation of this Warrant, the Company at the expense of the Holder shall execute and deliver, in lieu of this Warrant, a new warrant of like tenor and amount. 

4. Transfer of the Warrant. 

(a) Warrant Register. The Company shall maintain a register (the “Warrant Register”) containing the name
and address of the Holder or Holders. Until this Warrant is transferred on the Warrant 

 
Register in accordance herewith, the Company may treat the Holder as shown on the Warrant Register as the absolute owner of this Warrant for all purposes, notwithstanding any notice to the
contrary. Any Holder of this Warrant (or of any portion of this Warrant) may change its address as shown on the Warrant Register by written notice to the Company requesting a change. 

(b) Warrant Agent. The Company may appoint an agent for the purpose of maintaining the Warrant Register referred to in
Section 4(a), issuing the Shares or other securities then issuable upon the exercise of the rights under this Warrant, exchanging this Warrant, replacing this Warrant or conducting related activities. 

(c) Transferability of the Warrant. Subject to the provisions of this Warrant with respect to compliance with the Securities Act
of 1933, as amended (the “Securities Act”) and limitations on assignments and transfers, including without limitation compliance with the restrictions on transfer set forth in Section 5, title to this Warrant may be
transferred by endorsement (by the transferor and the transferee executing the assignment form attached as Exhibit B (the “Assignment Form”)) and delivery in the same manner as a negotiable instrument transferable by
endorsement and delivery. 
 (d) Exchange of the Warrant upon a Transfer. On surrender of this Warrant (and a properly
endorsed Assignment Form) for exchange, subject to the provisions of this Warrant with respect to compliance with the Securities Act and limitations on assignments and transfers, the Company shall issue to or on the order of the Holder a new warrant
or warrants of like tenor, in the name of the Holder or as the Holder (on payment by the Holder of any applicable transfer taxes) may direct, for the number of shares issuable upon exercise hereof, and the Company shall promptly register any such
transfer upon the Warrant Register. This Warrant (and the securities issuable upon exercise of the rights under this Warrant) must be surrendered to the Company or its warrant or transfer agent, as applicable, as a condition precedent to the sale,
pledge, hypothecation or other transfer of any interest in any of the securities represented hereby. 
 (e) Taxes. In no event
shall the Company be required to pay any tax which may be payable in respect of any transfer involved in the issue and delivery of any certificate in a name other than that of the Holder, and the Company shall not be required to issue or deliver any
such certificate unless and until the person or persons requesting the issue thereof shall have paid to the Company the amount of such tax or shall have established to the satisfaction of the Company that such tax has been paid or is not payable.

 5. Restrictions on Transfer of the Warrant and Shares; Compliance with Securities Laws. By acceptance of this Warrant, the Holder
agrees to comply with the following: 
 (a) Restrictions on Transfers. Other than Permitted Transfers (defined below), this
Warrant may not be transferred or assigned in whole or in part without the Company’s prior written consent (which shall not be unreasonably withheld), and any attempt by Holder to transfer or assign any rights, duties or obligations that arise
under this Warrant without such permission shall be void. Any transfer of this Warrant or the Shares or the shares of common stock issuable upon conversion of the Shares (the “Securities”) must be in compliance with all
applicable federal and state securities laws. The Holder agrees not to make any sale, assignment, transfer, pledge or other disposition of all or any portion of the Securities, or any beneficial interest therein, unless and until the transferee
thereof has agreed in writing for the benefit of the Company to take and hold such Securities subject to, and to be bound by, the terms and conditions set forth in this Warrant to the same extent as if the transferee were the original Holder
hereunder, and 
 (i) there is then in effect a registration statement under the Securities Act covering such proposed disposition and such
disposition is made in accordance with such registration statement, or 

 (ii) (A) such Holder shall have given prior written notice to the Company of such
Holder’s intention to make such disposition and shall have furnished the Company with a detailed description of the manner and circumstances of the proposed disposition, (B) the transferee shall have confirmed to the satisfaction of the
Company in writing, substantially in the form of Exhibit A-1, that the Securities are being acquired (i) solely for the transferee’s own account and not as a nominee for any other party, (ii) for investment and (iii) not
with a view toward distribution or resale, and shall have confirmed such other matters related thereto as may be reasonably requested by the Company, and (C) if requested by the Company, such Holder shall have furnished the Company, at the
Holder’s expense, with (i) an opinion of counsel, reasonably satisfactory to the Company, to the effect that such disposition will not require registration of such Securities under the Securities Act or (ii) a “no action”
letter from the Securities and Exchange Commission to the effect that the transfer of such Securities without registration will not result in a recommendation by the staff of the Securities and Exchange Commission that action be taken with respect
thereto, whereupon such Holder shall be entitled to transfer such Securities in accordance with the terms of the notice delivered by the Holder to the Company. 

(b) Permitted Transfers. “Permitted Transfers” include transactions involving the distribution without
consideration of securities by any Holder to (i) a parent, subsidiary or other affiliate of a Holder that is a corporation, (ii) any of the Holder’s partners, members or other equity owners, or retired partners or members, or to the
estate of any of its partners, members or other equity owners or retired partners or members, or (iii) a venture capital fund that is controlled by or under common control with one or more general partners or managing members of, or shares the
same management company with, the Holder. Notwithstanding anything to the contrary in Section 5(a) above, no registration statement, opinion of counsel or “no action” letter shall be necessary for Permitted Transfers; provided,
in each Permitted Transfer, that the Holder shall give written notice to the Company of the Holder’s intention to effect such disposition and shall have furnished the Company with a description of the manner and circumstances of the proposed
disposition. 
 (c) Investment Representation Statement. Unless the rights under this Warrant are exercised pursuant to an
effective registration statement under the Securities Act that includes the Shares with respect to which the Warrant was exercised, it shall be a condition to any exercise of the rights under this Warrant that the Holder shall have confirmed to the
satisfaction of the Company in writing, substantially in the form of Exhibit A-1, that the Shares so purchased are being acquired solely for the Holder’s own account and not as a nominee for any other party, for investment and not with a
view toward distribution or resale and that the Holder shall have confirmed such other matters related thereto as may be reasonably requested by the Company. 

(d) Securities Law Legend. The Securities shall (unless otherwise permitted by the provisions of this Warrant) be stamped or
imprinted with a legend substantially similar to the following (in addition to any legend required by state securities laws): 
 THE
SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR UNDER THE SECURITIES LAWS OF CERTAIN STATES. THESE SECURITIES MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED, PLEDGED OR
HYPOTHECATED EXCEPT AS PERMITTED UNDER THE ACT AND APPLICABLE STATE SECURITIES LAWS IN ACCORDANCE WITH APPLICABLE REGISTRATION REQUIREMENTS OR AN EXEMPTION THEREFROM. THE 

 
ISSUER OF THESE SECURITIES MAY REQUIRE AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE ISSUER THAT SUCH OFFER, SALE OR TRANSFER, PLEDGE OR HYPOTHECATION OTHERWISE COMPLIES WITH THE ACT AND
ANY APPLICABLE STATE SECURITIES LAWS. THIS CERTIFICATE MUST BE SURRENDERED TO THE COMPANY OR ITS TRANSFER AGENT AS A CONDITION PRECEDENT TO THE SALE, TRANSFER, PLEDGE OR HYPOTHECATION OF ANY INTEREST IN ANY OF THE SECURITIES REPRESENTED HEREBY. 

(e) Market Stand-off Legend. The Shares and common stock issued upon exercise hereof or conversion thereof shall also be stamped
or imprinted with a legend in substantially the following form: 
 THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO RESTRICTIONS ON
TRANSFERABILITY AND RESALE, INCLUDING A LOCK-UP PERIOD IN THE EVENT OF A PUBLIC OFFERING, AS SET FORTH IN THE WARRANT PURSUANT TO WHICH THESE SHARES WERE ISSUED, A COPY OF WHICH MAY BE OBTAINED AT THE PRINCIPAL OFFICE OF THE COMPANY. 

(f) Instructions Regarding Transfer Restrictions. The Holder consents to the Company making a notation on its records and giving
instructions to any transfer agent in order to implement the restrictions on transfer established in this Section 5. 
 (g)
Removal of Legend. The legend referring to federal and state securities laws identified in Section 5(d) stamped on a certificate evidencing the Shares (and the common stock issuable upon conversion thereof) and the stock transfer
instructions and record notations with respect to such securities shall be removed and the Company shall issue a certificate without such legend to the holder of such securities if (i) such securities are registered under the Securities Act, or
(ii) such holder provides the Company with an opinion of counsel reasonably acceptable to the Company to the effect that a sale or transfer of such securities may be made without registration or qualification. 

6. Adjustments. Subject to the expiration of this Warrant pursuant to Section 8, the number and kind of shares purchasable
hereunder and the Exercise Price therefor are subject to adjustment from time to time, as follows: 
 (a) Merger or
Reorganization. If at any time there shall be any reorganization, recapitalization, merger or consolidation (a “Reorganization”) involving the Company (other than as otherwise provided for herein or as would cause the
expiration of this Warrant under Section 8) in which shares of the Company’s stock are converted into or exchanged for securities, cash or other property, then, as a part of such Reorganization, lawful provision shall be made so that the
Holder shall thereafter be entitled to receive upon exercise of this Warrant, for the same aggregate Exercise Price as before such Reorganization, the kind and amount of securities, cash or other property of the successor corporation resulting from
such Reorganization, equivalent in value to that which a holder of the Shares deliverable upon exercise of this Warrant would have been entitled in such Reorganization if the right to purchase the Shares hereunder had been exercised immediately
prior to such Reorganization. In any such case, appropriate adjustment (as determined in good faith by the Board of Directors of the successor corporation) shall be made in the application of the provisions of this Warrant with respect to the rights
and interests of the Holder after such Reorganization to the end that the provisions of this Warrant shall be applicable after the event, as near as reasonably may be, in relation to any shares or other securities deliverable after that event upon
the exercise of this Warrant. 

 (b) Reclassification of Shares. If the securities issuable upon exercise of this
Warrant are changed into the same or a different number of securities of any other class or classes by reclassification, capital reorganization, conversion of all outstanding shares of the relevant class or series (other than as would cause the
expiration of this Warrant pursuant to Section 8) or otherwise (other than as otherwise provided for herein) (a “Reclassification”), then, in any such event, in lieu of the number of Shares which the Holder would
otherwise have been entitled to receive, the Holder shall have the right thereafter to exercise this Warrant, for the same aggregate Exercise Price as before such Reclassification, for a number of shares of such other class or classes of stock that
a holder of the number of securities deliverable upon exercise of this Warrant immediately before that change would have been entitled to receive in such Reclassification, all subject to further adjustment as provided herein with respect to such
other shares. 
 (c) Subdivisions and Combinations. In the event that the outstanding shares of the securities issuable upon
exercise of this Warrant are subdivided (by stock split, by payment of a stock dividend or otherwise) into a greater number of shares of such securities, the number of Shares issuable upon exercise of the rights under this Warrant immediately prior
to such subdivision shall, concurrently with the effectiveness of such subdivision, be proportionately increased, and the Exercise Price shall be proportionately decreased, and in the event that the outstanding shares of the securities issuable upon
exercise of this Warrant are combined (by reclassification or otherwise) into a lesser number of shares of such securities, the number of Shares issuable upon exercise of the rights under this Warrant immediately prior to such combination shall,
concurrently with the effectiveness of such combination, be proportionately decreased, and the Exercise Price shall be proportionately increased. 

(d) Redemption. In the event that all of the outstanding shares of the securities issuable upon exercise of this Warrant are
redeemed in accordance with the Company’s certificate of incorporation, this Warrant shall thereafter be exercisable, for the same aggregate Exercise Price as before such redemption, for a number of shares of the Company’s common stock
equal to the number of shares of common stock that would have been received if this Warrant had been exercised in full immediately prior to such redemption and the preferred stock received thereupon had been simultaneously converted into common
stock. 
 (e) Notice of Adjustments. Upon any adjustment in accordance with this Section 6, the Company shall give notice
thereof to the Holder, which notice shall state the event giving rise to the adjustment, the Exercise Price as adjusted and the number of securities or other property purchasable upon the exercise of the rights under this Warrant, setting forth in
reasonable detail the method of calculation of each. The Company shall, upon the written request of any Holder, furnish or cause to be furnished to such Holder a certificate setting forth (i) such adjustments, (ii) the Exercise Price at
the time in effect and (iii) the number of securities and the amount, if any, of other property that at the time would be received upon exercise of this Warrant. 

7. Notification of Certain Events. Prior to the expiration of this Warrant pursuant to Section 8, in the event that the Company
shall authorize: 
 (a) the issuance of any dividend or other distribution on the capital stock of the Company (other than
(i) dividends or distributions otherwise provided for in Section 6, (ii) repurchases of common stock issued to or held by employees, officers, directors or consultants of the Company or its subsidiaries upon termination of their
employment or services pursuant to agreements providing for the right of said repurchase; (iii) repurchases of common stock issued to or held by employees, officers, directors or consultants of the Company or its subsidiaries pursuant to rights
of first refusal or first offer contained in agreements providing for such rights; or (iv) repurchases of capital stock of the Company in connection with the settlement of disputes with any stockholder), whether in cash, property, stock or
other securities; 

 (b) the voluntary liquidation, dissolution or winding up of the Company; or 

(c) any transaction resulting in the expiration of this Warrant pursuant to Section 8(b); 

the Company shall send to the Holder of this Warrant at least ten (10) days prior written notice of the date on which a record shall be taken for any
such dividend or distribution specified in clause (a) or the expected effective date of any such other event specified in clause (b) or (c), as applicable. The notice provisions set forth in this section may be shortened or waived
prospectively or retrospectively by the consent of the holders of a majority of the Shares issuable upon exercise of the rights under the Warrants. 

8. Expiration of the Warrant. This Warrant shall expire and shall no longer be exercisable as of the earlier of: 

(a) 5:00 p.m., Pacific time, on June 30, 2017; or 

(b) a Liquidation Event, as defined in the Related Note. 

9. No Rights as a Stockholder. Nothing contained herein shall entitle the Holder to any rights as a stockholder of the Company or to be
deemed the holder of any securities that may at any time be issuable on the exercise of the rights hereunder for any purpose nor shall anything contained herein be construed to confer upon the Holder, as such, any right to vote for the election of
directors or upon any matter submitted to stockholders at any meeting thereof, or to give or withhold consent to any corporate action (whether upon any recapitalization, issuance of stock, reclassification of stock, change of par value or change of
stock to no par value, consolidation, merger, conveyance or otherwise) or to receive notice of meetings, or to receive dividends or subscription rights or any other rights of a stockholder of the Company until the rights under the Warrant shall have
been exercised and the Shares purchasable upon exercise of the rights hereunder shall have become deliverable as provided herein. 
 10.
Market Stand-Off Agreement. Each Holder hereby agrees that such Holder shall not sell or otherwise transfer, make any short sale of, grant any option for the purchase of, or enter into any hedging or similar transaction with the same
economic effect as a sale, of any common stock (or other securities) of the Company held by such Holder (other than those included in the registration or those purchased in the public market following the effective date of the registration) during
the 180 day period following the effective date of the registration statement for the Company’s first firm commitment underwritten public offering of its common stock registered under the Securities Act (or such other period, not to exceed an
additional 34 days, as may be requested by the Company or an underwriter to accommodate regulatory restrictions on (i) the publication or other distribution of research reports and (ii) analyst recommendations and opinions, including, but
not limited to, the restrictions contained in NASD Rule 2711(f)(4) or NYSE Rule 472(f)(4), or any successor provisions or amendments thereto); provided that all officers and directors of the Company and all holders of at least ten percent
(10%) of the Company’s voting securities are bound by and have entered into similar agreements. The obligations described in this Section 10 shall not apply to a registration relating solely to employee benefit plans on Form S-l or
Form S-8 or similar forms that may be promulgated in the future, or a registration relating solely to a transaction on Form S-4 or similar forms that may be promulgated in the future. The Company may impose stop-transfer instructions and may stamp
each such certificate with the legend set forth in Section 5(e) with respect to the shares of common stock (or other securities) subject to the foregoing restriction until the end of such 180 day period (or other period, not exceed a total of
214 days). Each Holder agrees to execute a market standoff agreement with said underwriters in customary form consistent with the provisions of this Section 10. 

 11. Miscellaneous. 

(a) Amendments. Except as expressly provided herein, neither this Warrant nor any term hereof may be amended, waived, discharged
or terminated other than by a written instrument referencing this Warrant and signed by the Company and the holders of warrants representing not less than a majority of the Shares issuable upon exercise of any and all outstanding Warrants, which
majority does not need to include the consent of the Holder. Any amendment, waiver, discharge or termination effected in accordance with this Section 11(a) shall be binding upon each holder of the Warrants, each future holder of such Warrants
and the Company; provided, however, that no special consideration or inducement may be given to any such holder in connection with such consent that is not given ratably to all such holders, and that such amendment must apply to all such
holders equally and ratably in accordance with the number of Shares issuable upon exercise of the Warrants. Promptly following any amendment pursuant to this Section 11(a), the Company shall give notice of such amendment to all holders of
Warrants. 
 (b) Waivers. No waiver of any single breach or default shall be deemed a waiver of any other breach or default
theretofore or thereafter occurring. 
 (c) Notices. All notices and other communications required or permitted hereunder
shall be in writing and shall be mailed by registered or certified mail, postage prepaid, transmitted via electronic mail, sent by facsimile or otherwise delivered by hand, messenger or courier service addressed: 

(i) if to the Holder, to the Holder at the Holder’s address, facsimile number or electronic mail address as shown in the Company’s
records, as may be updated in accordance with the provisions hereof, or until any such Holder so furnishes an address, facsimile number or electronic mail address to the Company, then to and at the address, facsimile number or electronic mail
address of the last holder of this Warrant for which the Company has contact information in its records; or 
 (ii) if to the Company, to
the attention of the President or Chief Financial Officer of the Company at the Company’s address as shown on the signature page hereto, or at such other address as the Company shall have furnished to the Holder. 

Each such notice or other communication shall for all purposes of this Warrant be treated as effective or having been given the earlier of
(i) when received, (ii) when delivered personally, (iii) one business day after being delivered by facsimile or transmitted via electronic mail (in either case, with receipt of appropriate confirmation), (iv) one business day
after being deposited with an overnight courier service of recognized standing or (v) four days after being deposited in the U.S. mail, first class with postage prepaid. In the event of any conflict between the Company’s books and records
and this Warrant or any notice delivered hereunder, the Company’s books and records will control absent fraud or error. 
 (d)
Governing Law. This Warrant and all actions arising out of or in connection with this Warrant shall be governed by and construed in accordance with the laws of the State of Washington, without regard to the conflicts of law provisions
of the State of Washington, or of any other state. 
 (e) Titles and Subtitles. The titles and subtitles used in this Warrant
are used for convenience only and are not to be considered in construing or interpreting this Warrant. All references in this Warrant to sections, paragraphs and exhibits shall, unless otherwise provided, refer to sections and paragraphs hereof and
exhibits attached hereto. 

 (f) Severability. If any provision of this Warrant becomes or is declared by a
court of competent jurisdiction to be illegal, unenforceable or void, portions of such provision, or such provision in its entirety, to the extent necessary, shall be severed from this Warrant, and such illegal, unenforceable or void provision shall
be replaced with a valid and enforceable provision that will achieve, to the extent possible, the same economic, business and other purposes of the illegal, unenforceable or void provision. The balance of this Warrant shall be enforceable in
accordance with its terms. 
 (g) Waiver of Jury Trial. EACH OF THE HOLDER AND THE COMPANY WAIVES, TO THE FULLEST EXTENT
PERMITTED BY LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING (WHETHER BASED ON CONTRACT, TORT OR OTHERWISE) ARISING OUT OF OR RELATED TO THIS WARRANT. 

(h) Rights and Obligations Survive Exercise of the Warrant. Except as otherwise provided herein, the rights and obligations of
the Company and the Holder under this Warrant shall survive the exercise of this Warrant. 
 (signature page follows)

 The Company signs this Warrant as of the date stated on the first page. 

 

	
	IMPINJ, INC.
	
	  

	William T. Colleran, President & CEO

 EXHIBIT A 

NOTICE OF EXERCISE 
  

			
	TO:	  	Impinj, Inc. (the “Company”)
		
	Attention:	  	President

  

	(1)	Exercise. The undersigned elects to purchase the following pursuant to the terms of the attached warrant: 

  

			
	Number of shares:	  	  

		
	Type of security:	  	  

			
		
	If exercise is conditional, indicate condition(s):	  	  

  

	(2)	Method of Exercise. The undersigned elects to exercise the attached warrant pursuant to: 

  

			
	 ̈	  	A cash payment, and tenders herewith payment of the purchase price for such shares in full, together with all applicable transfer taxes, if any.
		
	 ̈	  	The net issue exercise provisions of Section 2(b) of the attached warrant.

  

	(3)	Stock Certificate. Please issue a certificate or certificates representing the shares in the name of: 

  

					
	 ̈	  	The undersigned	 	
			
	 ̈	  	Other—Name:	 	  

			
		  	Address:	 	  

			
		  		 	  

  

	(4)	Unexercised Portion of the Warrant. Please issue a new warrant for the unexercised portion of the attached warrant in the name of: 

 

					
	 ̈	  	The undersigned	 	
			
	 ̈	  	Other—Name:	 	  

			
		  	Address:	 	  

			
		  		 	  

			
	  ̈
	  	Not applicable	 	

  

	(5)	Investment Intent. The undersigned represents and warrants that the aforesaid shares are being acquired for investment for its own account, not as a nominee or agent, and not with a view to, or for resale in
connection with, the distribution thereof, and that the undersigned has no present intention of selling, granting any participation in, or otherwise distributing the shares, nor does it have any contract, undertaking, agreement or arrangement for
the same, and all representations and warranties of the undersigned set forth in Section 3 of the Purchase Agreement are true and correct as of the date hereof. 

	(6)	Investment Representation Statement. The undersigned has executed, and delivers herewith, an Investment Representation Statement in a form substantially similar to the form attached to the warrant as
Exhibit A-1. 

  

	
	  

	(Print name of the warrant holder)
	
	  

	(Signature)
	
	  

	(Name and title of signatory, if applicable)
	
	  

	(Date)
	
	  

	(Fax number)

 EXHIBIT A-l 

INVESTMENT REPRESENTATION STATEMENT 
  

					
	INVESTOR:	  	  
	  	
			
	COMPANY:	  	IMPINJ, INC.	  	
		
	SECURITIES:	  	THE WARRANT ISSUED ON JULY 13, 2012 (THE “WARRANT”) AND THE SECURITIES ISSUED OR ISSUABLE UPON EXERCISE THEREOF (INCLUDING UPON SUBSEQUENT CONVERSION OF THOSE SECURITIES)
			
	DATE:	  	  
	  	

 In connection with the purchase or acquisition of the above-listed Securities, the undersigned Investor
represents and warrants to, and agrees with, the Company as follows: 
 1. No Registration. The Investor understands that the
Securities have not been, and will not be, registered under the Securities Act of 1933, as amended (the “Securities Act”), by reason of a specific exemption from the registration provisions of the Securities Act, the
availability of which depends upon, among other things, the bona fide nature of the investment intent and the accuracy of the Investor’s representations as expressed herein or otherwise made pursuant hereto. 

2. Investment Intent. The Investor is acquiring the Securities for investment for its own account, not as a nominee or agent, and not
with a view to, or for resale in connection with, any distribution thereof. The Investor has no present intention of selling, granting any participation in, or otherwise distributing the Securities, nor does it have any contract, undertaking,
agreement or arrangement for the same. 
 3. Investment Experience. The Investor has substantial experience in evaluating and
investing in private placement transactions of securities in companies similar to the Company, and has such knowledge and experience in financial or business matters so that it is capable of evaluating the merits and risks of its investment in the
Company and protecting its own interests. 
 4. Speculative Nature of Investment. The Investor understands and acknowledges that the
Company has a limited financial and operating history and that its investment in the Company is highly speculative and involves substantial risks. The Investor can bear the economic risk of its investment and is able, without impairing its financial
condition, to hold the Securities for an indefinite period of time and to suffer a complete loss of its investment. 
 5. Access to
Data. The Investor has had an opportunity to ask questions of officers of the Company, which questions were answered to its satisfaction. The Investor believes that it has received all the information that it considers necessary or appropriate
for deciding whether to acquire the Securities. The Investor understands that any such discussions, as well as any information issued by the Company, were intended to describe certain aspects of the Company’s business and prospects, but were
not necessarily a thorough or exhaustive description. The Investor acknowledges that any business plans prepared by the Company have been, and continue to be, subject to change and that any projections included in such business plans or otherwise
are necessarily speculative in nature, and it can be expected that some or all of the assumptions underlying the projections will not materialize or will vary significantly from actual results. 

 6. Accredited Investor. The Investor is an “accredited investor” within the
meaning of Regulation D, Rule 501(a), promulgated by the Securities and Exchange Commission and agrees to submit to the Company such further assurances of such status as may be reasonably requested by the Company. 

7. Residency. The residency of the Investor (or, in the case of a partnership or corporation, such entity’s principal place of
business) is correctly set forth on the signature page hereto. 
 8. Restrictions on Resales. The Investor acknowledges that the
Securities must be held indefinitely unless subsequently registered under the Securities Act or an exemption from such registration is available. The Investor is aware of the provisions of Rule 144 promulgated under the Securities Act, which
permit resale of shares purchased in a private placement subject to the satisfaction of certain conditions, which may include, among other things, the availability of certain current public information about the Company; the resale occurring not
less than a specified period after a party has purchased and paid for the security to be sold; the number of shares being sold during any three-month period not exceeding specified limitations; the sale being effected through a “broker’s
transaction,” a transaction directly with a “market maker” or a “riskless principal transaction” (as those terms are defined in the Securities Act or the Securities Exchange Act of 1934, as amended, and the rules and
regulations promulgated thereunder); and the filing of a Form 144 notice, if applicable. The Investor acknowledges and understands that the Company may not be satisfying the current public information requirement of Rule 144 at the time the
Investor wishes to sell the Securities and that, in such event, the Investor may be precluded from selling the Securities under Rule 144 even if the other applicable requirements of Rule 144 have been satisfied. The Investor understands
and acknowledges that, in the event the applicable requirements of Rule 144 are not met, registration under the Securities Act or an exemption from registration will be required for any disposition of the Securities. 

9. No Public Market. The Holder understands and acknowledges that no public market now exists for any of the securities issued by the
Company and that the Company has made no assurances that a public market will ever exist for the Company’s securities. 
 10.
Brokers and Finders. The Investor has not engaged any brokers, finders or agents in connection with the Securities, and the Company has not incurred nor will incur, directly or indirectly, as a result of any action taken by the Investor, any
liability for brokerage or finders’ fees or agents’ commissions or any similar charges in connection with the Securities. 
 11.
Legal Counsel. The Investor has had the opportunity to review the Warrant, the exhibits and schedules attached thereto and the transactions contemplated by the Warrant with its own legal counsel. The Investor is not relying on any statements
or representations of the Company or its agents for legal advice with respect to this investment or the transactions contemplated by the Warrant. 

12. Tax Advisors. The Investor has reviewed with its own tax advisors the U.S. federal, state and local and non-U.S. tax consequences
of this investment and the transactions contemplated by the Warrant. With respect to such matters, the Investor relies solely on such advisors and not on any statements or representations of the Company or any of its agents, written or oral. The
Investor understands that it (and not the Company) shall be responsible for its own tax liability that may arise as a result of this investment or the transactions contemplated by the Warrant. 

 The Investor is signing this Investment Representation Statement on the date first written above.

  

	
	INVESTOR
	
	  

	(Print name of the investor)
	
	  

	(Signature)
	
	  

	(Name and title of signatory, if applicable)
	
	  

	(Street address)
	
	  

	(City, state and ZIP)

 EXHIBIT B 

ASSIGNMENT FORM 
  

					
	ASSIGNOR:	  	  
	  	
			
	COMPANY:	  	IMPINJ, INC.	  	
		
	WARRANT:	  	THE WARRANT TO PURCHASE SHARES OF PREFERRED STOCK ISSUED ON JULY 13, 2012 (THE “WARRANT”)
			
	DATE:	  	  
	  	

  

	(1)	Assignment. The undersigned registered holder of the Warrant (“Assignor”) assigns and transfers to the assignee named below (“Assignee”) all of the rights of
Assignor under the Warrant, with respect to the number of shares set forth below: 

  

			
	 Name of Assignee:
	 	
 

			
		
	 Address of Assignee:
	 	  

		
		 	
 

			
		
	 Number of Shares Assigned:
	 	  

 and does irrevocably constitute and appoint
                     as attorney to make such transfer on the books of Impinj, Inc., maintained for the purpose, with full power of substitution in
the premises. 
  

	(2)	Obligations of Assignee. Assignee agrees to take and hold the Warrant and any shares of stock to be issued upon exercise of the rights thereunder (and any shares issuable upon conversion thereof) (the
“Securities”) subject to, and to be bound by, the terms and conditions set forth in the Warrant to the same extent as if Assignee were the original holder thereof. 

 

	(3)	Investment Intent. Assignee represents and warrants that the Securities are being acquired for investment for its own account, not as a nominee or agent, and not with a view to, or for resale in connection with,
the distribution thereof, and that Assignee has no present intention of selling, granting any participation in, or otherwise distributing the shares, nor does it have any contract, undertaking, agreement or arrangement for the same, and all
representations and warranties set forth in Section 3 of the Purchase Agreement are true and correct as to Assignee as of the date hereof. 

  

	(4)	Investment Representation Statement. Assignee has executed, and delivers herewith, an Investment Representation Statement in a form substantially similar to the form attached to the Warrant as Exhibit A-1.

 Assignor and Assignee are signing this Assignment Form on the date first set forth above. 

 

			
	ASSIGNOR	  	ASSIGNEE
		
	  
	  	  

	(Print name of Assignor)	  	(Print name of Assignee)
		
	  
	  	  

	(Signature of Assignor)	  	(Signature of Assignee)
		
	  
	  	  

	(Print name of signatory, if applicable)	  	(Print name of signatory, if applicable)
		
	  
	  	  

	(Print title of signatory, if applicable)	  	(Print title of signatory, if applicable)
		
	Address:	  	Address:Amended and Restated Warrant to purchase Series 2 Preferred Stock

 Exhibit 4.4 

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 AND PURSUANT TO THE PROVISIONS OF ARTICLE 5 BELOW, MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED, PLEDGED OR HYPOTHECATED UNLESS AND UNTIL REGISTERED UNDER SAID ACT AND APPLICABLE STATE SECURITIES LAW OR, IN THE
OPINION OF LEGAL COUNSEL IN FORM AND SUBSTANCE SATISFACTORY TO THE ISSUER OF THESE SECURITIES, SUCH OFFER, SALE OR TRANSFER, PLEDGE OR HYPOTHECATION IS EXEMPT FROM REGISTRATION. 

AMENDED AND RESTATED WARRANT TO PURCHASE STOCK 
  

			
	Company:	  	IMPINJ, INC., a Delaware corporation
	Number of Shares:	  	17,498
	Class of Stock:	  	Series 2 Preferred
	Warrant Price:	  	$0.7765 per share
	Issue Date:	  	July 13, 2012
	Expiration Date:	  	February 2, 2021
	Amendment:	  	As of the date of this Warrant, this Warrant (i) amends and restates the terms of the Warrant issued to the Holder on February 2, 2011 (the “Original Warrant”) in connection with the Facility B Term Loans
referenced in the Loan and Security Agreement between Company and Silicon Valley Bank dated May 7, 2010, as amended from time to time, including by that certain First Amendment to Loan and Security Agreement dated as of February 1,
2011.

 THIS WARRANT CERTIFIES THAT, for good and valuable consideration, SILICON VALLEY BANK (Silicon Valley Bank,
together with any registered holder from time to time of this Warrant or any holder of the shares issuable or issued upon exercise of this Warrant, “Holder”) is entitled to purchase the number of fully paid and nonassessable shares of the
class of securities (the “Shares”) of the Company at the Warrant Price, all as set forth above and as adjusted pursuant to Article 2 of this Warrant, subject to the provisions and upon the terms and conditions set forth in this
Warrant. 
 By accepting this Warrant, (i) the Holder hereby represents that the Original Warrant has not been transferred and
(ii) the Holder hereby agrees to surrender to the Company for cancellation the Original Warrant or at the request of the Company to execute an instrument of cancelleation in form and substance acceptable to the Company. The Holder and the
Company hereby acknowledge and agree that upon the issuance of this Warrant, the Original Warrant shall be amended and restated an all of the Company’s obligations under such Original Warrant shall be discharged and released in full without any
further action on the part of the Company or the Holder. 
 ARTICLE 1. EXERCISE. 

1.1 Method of Exercise. Holder may exercise this Warrant by delivering a duly executed Notice of Exercise in substantially the form
attached as Appendix 1 to the principal office of the Company. Unless Holder is exercising the conversion right set forth in Article 1.2, Holder shall also deliver to the Company a check, wire transfer (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 Conversion Right. In lieu of exercising this Warrant as specified in Article 1.1,
Holder may from time to time convert this Warrant, in whole or in part, into a number of Shares determined by dividing (a) the aggregate fair market value of the Shares or other securities otherwise issuable upon exercise of this Warrant minus
the aggregate Warrant Price of such Shares by (b) the fair market value of one Share. The fair market value of the Shares shall be determined pursuant to Article 1.3. 

1.3 Fair Market Value. If the Company’s common stock is traded in a public market and the Shares are common stock, the fair market
value of each Share shall be the closing price of a Share reported for the business day immediately before Holder delivers its Notice of Exercise to the Company (or in the instance where the Warrant is exercised immediately prior to the
effectiveness of the Company’s initial public offering, the “price to public” per share price specified in the final prospectus relating to such offering). If the Company’s common stock is traded in a public market and the Shares
are preferred stock, the fair market value of a Share shall be the closing price of a share of the Company’s common stock reported for the business day immediately before Holder delivers its Notice of Exercise to the Company (or, in the
instance where the Warrant is exercised immediately prior to the effectiveness of the Company’s initial public offering, the initial “price to public” per share price specified in the final prospectus relating to such offering), in
both cases, multiplied by the number of shares of the Company’s common stock into which a Share is convertible. If the Company’s common stock is not traded in a public market, the Board of Directors of the Company shall determine fair
market value in its reasonable good faith judgment. 
 1.4 Delivery of Certificate and New Warrant. Promptly after Holder exercises
or converts this Warrant and, if applicable, the Company receives payment of the aggregate Warrant Price, the Company shall deliver to Holder certificates for the Shares acquired and, if this Warrant has not been fully exercised or converted and has
not expired, a new Warrant representing the Shares not so acquired. 
 1.5 Replacement of Warrants. 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 and amount to the Company or, in the case
of mutilation on surrender and cancellation of this Warrant, the Company shall execute and deliver, in lieu of this Warrant, a new warrant of like tenor. 

1.6 Treatment of Warrant Upon Acquisition of Company. 

1.6.1 “Acquisition”. For the purpose of this Warrant, “Acquisition” means any sale, license, or other disposition
of all or substantially all of the assets of the Company, or any reorganization, consolidation, or merger of the Company where Holders of the Company’s securities before the transaction beneficially own less than 50% of the outstanding voting
securities of the surviving entity after the transaction. 
 1.6.2 Treatment of Warrant at Acquisition. 

A) Upon the written request of the Company, Holder agrees that, in the event of an Acquisition that is not an asset sale and in which the sole consideration
is cash, either 

 
(a) Holder shall exercise its conversion or purchase right under this Warrant and such exercise will be deemed effective immediately prior to the consummation of such Acquisition or
(b) if Holder elects not to exercise the Warrant, this Warrant will expire upon the consummation of such Acquisition. The Company shall provide Holder with written notice of its request relating to the foregoing (together with such reasonable
information as Holder may request in connection with such contemplated Acquisition giving rise to such notice), which is to be delivered to Holder not less than ten (10) days prior to the closing of the proposed Acquisition. 

B) Upon the written request of the Company, Holder agrees that, in the event of an Acquisition that is an “arms length” sale of all or substantially
all of the Company’s assets (and only its assets) to a third party that is not an Affiliate (as defined below) of the Company (a “True Asset Sale”), either (a) Holder shall exercise its conversion or purchase right under this
Warrant and such exercise will be deemed effective immediately prior to the consummation of such Acquisition or (b) if Holder elects not to exercise the Warrant, this Warrant will continue until the Expiration Date if the Company continues as a
going concern following the closing of any such True Asset Sale. The Company shall provide Holder with written notice of its request relating to the foregoing (together with such reasonable information as Holder may request in connection with such
contemplated Acquisition giving rise to such notice), which is to be delivered to Holder not less than ten (10) days prior to the closing of the proposed Acquisition. 

C) Upon the closing of any Acquisition other than those particularly described in subsections (A) and (B) above, the successor entity shall assume
the obligations of this Warrant, and this Warrant shall be exercisable for the same securities, cash, and property as would be payable for the Shares issuable upon exercise of the unexercised portion of this Warrant as if such Shares were
outstanding on the record date for the Acquisition and subsequent closing. The Warrant Price and/or number of Shares shall be adjusted accordingly. 
 As
used herein “Affiliate” shall mean any person or entity that owns or controls directly or indirectly ten (10) percent or more of the stock of Company, any person or entity that controls or is controlled by or is under common
control with such persons or entities, and each of such person’s or entity’s officers, directors, joint venturers or partners, as applicable. 

ARTICLE 2. ADJUSTMENTS TO THE SHARES. 

2.1 Stock Dividends, Splits, Etc. If the Company declares or pays a dividend on the Shares payable in common stock, or other
securities, then upon exercise of this Warrant, for each Share acquired, Holder shall receive, without cost to Holder, the total number and kind of securities to which Holder would have been entitled had Holder owned the Shares of record as of the
date the dividend occurred. If the Company subdivides the Shares by reclassification or otherwise into a greater number of shares or takes any other action which increase the amount of stock into which the Shares are convertible, the number of
shares purchasable hereunder shall be proportionately increased and the Warrant Price shall be proportionately decreased. If the outstanding shares 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 reclassification, exchange, substitution, or other event that results in a change of the number and/or class of the securities issuable upon exercise or conversion of this Warrant, Holder shall be
entitled to receive, upon exercise or conversion of this Warrant, the number and kind of securities and property that Holder would have received for the Shares if this Warrant had been 

 
exercised immediately before such reclassification, exchange, substitution, or other event. Such an event shall include any automatic conversion of the outstanding or issuable securities of the
Company of the same class or series as the Shares to common stock pursuant to the terms of the Company’s Articles or Certificate (as applicable) of Incorporation upon the closing of a registered public offering of the Company’s common
stock. The Company or its successor shall promptly issue to Holder an amendment to this Warrant setting forth the number and kind of such new securities or other property issuable upon exercise or conversion of this Warrant as a result of such
reclassification, exchange, substitution or other event that results in a change of the number and/or class of securities issuable upon exercise or conversion of this Warrant. The amendment to this Warrant shall provide for adjustments which shall
be as nearly equivalent as may be practicable to the adjustments provided for in this Article 2 including, without limitation, adjustments to the Warrant Price and to the number of securities or property issuable upon exercise of the new
Warrant. The provisions of this Article 2.2 shall similarly apply to successive reclassifications, exchanges, substitutions, or other events. 

2.3 Adjustments for Diluting Issuances. The Warrant Price and the number of Shares issuable upon exercise of this Warrant or, if the
Shares are preferred stock, the number of shares of common stock issuable upon conversion of the Shares, shall be subject to adjustment, from time to time in the manner set forth in the Company’s Articles or Certificate of Incorporation as if
the Shares were issued and outstanding on and as of the date of any such required adjustment. The provisions set forth for the Shares in the Company’s Articles or Certificate (as applicable) of Incorporation relating to the above in effect as
of the Issue Date may not be amended, modified or waived, without the prior written consent of Holder unless such amendment, modification or waiver affects the rights associated with the Shares in the same manner as such amendment, modification or
waiver affects the rights associated with all other shares of the same series and class as the Shares granted to Holder. 
 2.4 No
Impairment. The Company shall not, by amendment of its Articles or Certificate (as applicable) of Incorporation or through a reorganization, transfer of assets, consolidation, merger, dissolution, issue, or sale of securities or any other
voluntary action, avoid or seek to avoid the observance or performance of any of the terms to be observed or performed under this Warrant by the Company, but shall at all times in good faith assist in carrying out of all the provisions of this
Article 2 and in taking all such action as may be necessary or appropriate to protect Holder’s rights under this Article against impairment. Notwithstanding the foregoing, in no event shall the Company’s obligations pursuant to
this Section 2.4 prohibit the Company from amending its Certificate of Incorporation with the requisite consent of its stockholders and its board of directors as required under Delaware law. 

2.5 Fractional Shares. No fractional Shares shall be issuable upon exercise or conversion 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 or conversion of the Warrant, the Company shall eliminate such fractional share interest by paying Holder the amount computed by
multiplying the fractional interest by the fair market value of a full Share. 
 2.6 Certificate as to Adjustments. Upon each
adjustment of the Warrant Price, the Company shall promptly notify Holder in writing, and, at the Company’s expense, promptly compute such adjustment, and furnish Holder with a certificate of its Chief Financial Officer setting forth such
adjustment and the facts upon which such adjustment is based. The Company shall, upon written request, furnish Holder a certificate setting forth the Warrant Price in effect upon the date thereof and the series of adjustments leading to such Warrant
Price. 

 ARTICLE 3. REPRESENTATIONS AND COVENANTS OF THE COMPANY. 

3.1 Representations and Warranties. The Company represents and warrants to Holder as follows: 

(a) The initial Warrant Price referenced on the first page of this Warrant is not greater than (i) the price per share at which the
Shares were last issued in an arms-length transaction in which at least $500,000 of the Shares were sold and (ii) the fair market value of the Shares as of the date of this Warrant. 

(b) All Shares which may be issued upon the exercise of the purchase right represented by this Warrant, and all securities, if any, issuable
upon conversion of the Shares, shall, upon issuance, be duly authorized, validly issued, fully paid and nonassessable, and free of any liens and encumbrances except for restrictions on transfer provided for herein or under applicable federal and
state securities laws. 
 (c) The Company’s capitalization table attached hereto as Schedule 1 is true and complete as of
the Issue Date. 
 3.2 Notice of Certain Events. If the Company proposes at any time (a) to declare any dividend or distribution
upon any of its stock, whether in cash, property, stock, or other securities and whether or not a regular cash dividend; (b) to offer for sale any shares of the Company’s capital stock (or other securities convertible into such capital
stock), other than (i) pursuant to the Company’s stock option or other compensatory plans, (ii) in connection with commercial credit arrangements or equipment financings, or (iii) in connection with strategic transactions for
purposes other than capital raising; (c) to effect any reclassification or recapitalization of any of its stock; (d) to merge or consolidate with or into any other corporation, or sell, lease, license, or convey all or substantially all of
its assets, or to liquidate, dissolve or wind up; or (e) offer holders of registration rights the opportunity to participate in an underwritten public offering of the Company’s securities for cash, then, in connection with each such event,
the Company shall give Holder: (1) at least 10 days prior written notice of the date on which a record will be taken for such dividend, distribution, or subscription rights (and specifying the date on which Holders of common stock will be
entitled thereto) or for determining rights to vote, if any, in respect of the matters referred to in (a) and (b) above; (2) in the case of the matters referred to in (c) and (d) above at least 10 days prior written notice
of the date when the same will take place (and specifying the date on which Holders of common stock will be entitled to exchange their common stock for securities or other property deliverable upon the occurrence of such event); and (3) in the
case of the matter referred to in (e) above, the same notice as is given to Holders of such registration rights. Company will also provide information requested by Holder reasonably necessary to enable Holder to comply with Holder’s
accounting or reporting requirements. 
 3.3 Registration Under Securities Act of 1933, as amended. The Company agrees that the
Shares or, if the Shares are convertible into common stock of the Company, such common stock, shall have certain “piggyback,” registration rights pursuant to and as set forth in the Company’s Investors’ Rights Agreement or
similar agreement. The provisions set forth in the Company’s Investors’ Right Agreement or similar agreement relating to the above in effect as of the Issue Date may not be amended, modified or waived without the prior written consent of
Holder unless such amendment, modification or waiver affects the rights associated with the Shares in the same manner as such amendment, modification, or waiver affects the rights associated with all other shares of the same series and class as the
Shares granted to Holder. 
 3.4 No Shareholder Rights. Except as provided in this Warrant, Holder will not have any rights as a
shareholder of the Company until the exercise of this Warrant. 

 ARTICLE 4. REPRESENTATIONS, WARRANTIES OF HOLDER. Holder represents and warrants to the Company as
follows: 
 4.1 Purchase for Own Account. This Warrant and the securities to be acquired upon exercise of this Warrant by Holder will
be 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 Holder has not been formed for the specific purpose
of acquiring this Warrant or the Shares. 
 4.2 Disclosure of Information. Holder 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 or conversion 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 Holder’s
investment intent as expressed herein. Holder understands that this Warrant and the Shares issued upon any exercise or conversion 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. 
 ARTICLE 5. MISCELLANEOUS. 

5.1 This Warrant is exercisable in whole or in part at any time and from time to time on or before the Expiration Date. 

 5.2 Legends. This Warrant and the Shares (and the securities issuable, directly or
indirectly, upon conversion of the Shares, if any) shall be imprinted with a legend in substantially the following form: 
 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 AND PURSUANT TO THE PROVISIONS OF ARTICLE 5 BELOW, MAY NOT BE OFFERED, SOLD OR
OTHERWISE TRANSFERRED, PLEDGED OR HYPOTHECATED UNLESS AND UNTIL REGISTERED UNDER SAID ACT AND APPLICABLE STATE SECURITIES LAW OR, IN THE OPINION OF LEGAL COUNSEL IN FORM AND SUBSTANCE SATISFACTORY TO THE ISSUER OF THESE SECURITIES, SUCH OFFER, SALE
OR TRANSFER, PLEDGE OR HYPOTHECATION IS EXEMPT FROM REGISTRATION. 
 5.3 Compliance with Securities Laws on Transfer. This Warrant
and the Shares issuable upon exercise of this Warrant (and the securities issuable, directly or indirectly, upon conversion of the Shares, if any) may not be transferred or assigned in whole or in part without 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 Silicon Valley Bank (“Bank”) to provide an opinion of counsel if the transfer is to Bank’s parent company, SVB Financial Group (formerly Silicon Valley Bancshares), or any other affiliate of Bank.
Additionally, the Company shall also not require an opinion of counsel if there is no material question as to the availability of current information as referenced in Rule 144(c), Holder represents that it has complied with Rule 144(d) and
(e) in reasonable detail, the selling broker represents that it has complied with Rule 144(f), and the Company is provided with a copy of Holder’s notice of proposed sale. 

5.4 Transfer Procedure. After receipt by Bank of the executed Warrant, Bank will transfer all of this Warrant to SVB Financial Group by
execution of an Assignment substantially in the form of Appendix 2. Subject to the provisions of Article 5.3 and upon providing the Company with written notice, SVB Financial Group and any subsequent Holder may transfer all or part of this
Warrant or the Shares issuable upon exercise of this Warrant (or the Shares issuable directly or indirectly, upon conversion of the Shares, if any) to any transferee, provided, however, in connection with any such transfer, SVB Financial Group or
any subsequent Holder will give the Company notice of the portion of the Warrant being transferred with the name, address and taxpayer identification number of the transferee and Holder will surrender this Warrant to the Company for reissuance to
the transferee(s) (and Holder if applicable). The Company may refuse to transfer this Warrant or the Shares to any person who directly competes with the Company, unless, in either case, the stock of the Company is publicly traded. 

5.5 Notices. All notices and other communications from the Company to Holder, or vice versa, shall be deemed delivered and effective
when given personally or mailed by first-class registered or certified mail, postage prepaid, at such address as may have been furnished to the Company or Holder, as the case may (or on the first business day after transmission by facsimile) be, in
writing by the Company or such Holder from time to time. 

 
Effective upon receipt of the fully executed Warrant and the initial transfer described in Article 5.4 above, 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: 
 SVB Financial Group 

Attn: Treasury Department 
 3003
Tasman Drive, HA 200 
 Santa Clara, CA 95054 

Telephone: 
 Facsimile: 

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

IMPINJ, INC. 
 Attn: Evan Fein,
Chief Financial Officer 
 701 N. 34th Street, Suite 300 

Seattle, WA 98103 
 Fax: 

5.6 Waiver. This Warrant and any term hereof may be changed, waived, discharged or terminated only by an instrument in writing signed
by the party against which enforcement of such change, waiver, discharge or termination is sought. 
 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 Automatic Conversion upon Expiration. In the event that, upon the Expiration Date, the fair market value
of one Share (or other security issuable upon the exercise hereof) 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 converted pursuant to Section 1.2 above as to all Shares (or such other securities) for which it shall not previously have been exercised or converted, and the Company shall promptly deliver a certificate representing the Shares (or
such other securities) issued upon such conversion to Holder. 
 5.9 Counterparts. This Warrant may be executed in counterparts, all
of which together shall constitute one and the same agreement. 
 5.10 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. 
 5.11
Lock-Up Agreement. Holder agrees to be bound by the “Lock-Up Agreement” provision (the “Lock-Up Provision”) in Section 1.14 of the Company’s Amended and Restated Investors’ Rights Agreement dated
July 12, 2012. The Lock-Up Provision set forth in the Investors’ Rights Agreement may not be amended, modified or waived without the prior consent of the Holder unless such amendment, modification or waiver affects the rights associated
with all other shares of the same series and class as the Shares granted pursuant to this Warrant. 
 [Signature page follows.] 

									
	“COMPANY”	 		 	Date:	 	  

			
	IMPINJ, INC.	 		 	
					
	By:	 	 /s/ William T. Colleran
	 		 	By:	 	 /s/ Evan Fein

					
	Name:	 	William T. Colleran	 		 	Name:	 	Evan Fein
					
	Title:	 	President and Chief Executive Officer	 		 	Title:	 	Chief Financial Officer
			
	“HOLDER”	 		 	
			
	SILICON VALLEY BANK	 		 	
					
	By:	 	 /s/ Minh Le
	 		 		 	
					
	Name:	 	 Minh Le
	 		 		 	
		 	(Print)	 		 		 	
	Title:	 	 Deal Team Leader
	 		 		 	

 APPENDIX 1 

NOTICE OF EXERCISE 

1. Holder elects to purchase              shares of the Common/Series
             Preferred [strike one] Stock of IMPINJ, INC. pursuant to the terms of the attached Warrant, and tenders payment of the purchase price of the shares in full. 

[or] 
 1. Holder elects to
convert the attached Warrant into Shares/cash [strike one] in the manner specified in the Warrant. This conversion is exercised for
                     of the Shares covered by the Warrant. 

[Strike paragraph that does not apply.] 

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

 

					
		 	  
	 	
		 	          Holders Name	 	
			
		 	  
	 	
			
		 	  
	 	
		 	          (Address)	 	

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

			
	HOLDER:
	
	  

		
	By:	 	  

		
	Name:	 	  

		
	Title:	 	  

		
	(Date):	 	  

 APPENDIX 2 

ASSIGNMENT 
 For
value received, Silicon Valley Bank hereby sells, assigns and transfers unto 
  

			
	Name:	  	SVB Financial Group
	Address:	  	3003 Tasman Drive (HA-200)
		  	Santa Clara, CA 95054
		
	Tax ID:	  	

 that certain Warrant to Purchase Stock issued by IMPINJ, INC. (the “Company”), on July
    , 2012 (the “Warrant”) together with all rights, title and interest therein. 
  

			
	SILICON VALLEY BANK
		
	By:	 	  

		
	Name:	 	  

		
	Title:	 	  

  

			
	Date:	 	  

 By its execution below, and for the benefit of the Company, SVB Financial Group makes each of the representations and
warranties set forth in Article 4 of the Warrant and agrees to all other provisions of the Warrant as of the date hereof. 
  

			
	SVB FINANCIAL GROUP
		
	By:	 	  

		
	Name:	 	  

		
	Title:

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