FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

DOSSETT JEFFREY
2. Issuer Name and Ticker or Trading Symbol

IMPINJ INC [ PI ]
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
Chief Revenue Officer
(Last)          (First)          (Middle)

400 FAIRVIEW AVE N. SUITE 1200
3. Date of Earliest Transaction (MM/DD/YYYY)

7/30/2021
(Street)

SEATTLE, WA 98109
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 7/30/2021  M  1500 A$17.33 38515 D  
Common Stock 7/30/2021  S(1)  1500 D$43.60 37015 D  
Common Stock 7/31/2021  M  1563 A$0.00 38578 D  
Common Stock 8/2/2021  S(2)  606 D$46.726 (3)37972 D  

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security3. Trans. Date3A. Deemed Execution Date, if any4. Trans. Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
6. Date Exercisable and Expiration Date7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy) $17.33 7/30/2020  M     1500   (4)5/16/2028 Common Stock 1500 $0.00 56259 D  
Restricted Stock Unit (5)$0.00 7/31/2021  M     1563   (6) (6)Common Stock 1563 $0.00 12501 D  

Explanation of Responses:
(1) The sales reported by Mr. Dossett were effected pursuant to a Rule 10b5-1 trading plan adopted on September 14, 2020.
(2) These shares were disposed of in non-discretionary transactions to cover the reporting person's tax withholding obligations in connection with the settlement of an award of restricted stock units.
(3) The "Amount" and "Price" reported in this Column 4 reflect the aggregate number and weighted-average price, respectively, of shares sold. These shares were sold in multiple transactions at prices ranging from $46.705 to $46.75, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth herein.
(4) One-fourth of the shares subject to the option vested on November 16, 2018, and 1/48th of the shares subject to the option shall vest on the 3rd day of each month thereafter
(5) Each restricted stock unit represents a contingent right to receive one share of Impinj common stock.
(6) On July 31, 2019, the reporting person was granted 25,000 restricted stock units ("RSUs"). One-sixteenth of these RSUs vested on July 31, 2021.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
DOSSETT JEFFREY
400 FAIRVIEW AVE N. SUITE 1200
SEATTLE, WA 98109


Chief Revenue Officer

Signatures
/s/ Yukio Morikubo, Attorney in fact for Jeffrey Dossett8/3/2021
**Signature of Reporting PersonDate

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