PI

SEC source: 0001246360-20-000117 · form.xml · derivative · entry 7

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: COMMON STOCK · 620 shares

Expires 2028-10-31

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: The option fully vested on February 19, 2019.

SEC source: 0001246360-20-000117 · form.xml · derivative · entry 6

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: COMMON STOCK · 16,666 shares

Expires 2023-12-03

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: The option became fully vested on November 4, 2017.

SEC source: 0001246360-20-000117 · form.xml · nonDerivative · entry 5

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 247,347

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001246360-20-000117 · form.xml · nonDerivative · entry 4

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 241,097

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001246360-20-000117 · form.xml · nonDerivative · entry 3

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 240,477

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001246360-20-000117 · form.xml · nonDerivative · entry 2

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 223,811

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001246360-19-002658 · form.xml · nonDerivative · entry 2

BRODERSEN ERIC · CIK 0001677723 · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · kind: The sales reported by Mr. Brodersen were effected pursuant to a Rule 10b5-1 trading plan adopted on November 26, 2018.

F3 · price: 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 $30.65 to $31.23, 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.

SEC source: 0001246360-19-002658 · form.xml · nonDerivative · entry 1

BRODERSEN ERIC · CIK 0001677723 · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,600

F1 · kind: The sales reported by Mr. Brodersen were effected pursuant to a Rule 10b5-1 trading plan adopted on November 26, 2018.

F2 · price: 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 $30.44 to $30.97, 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.

SEC source: 0001012975-19-000711 · edgar.xml · nonDerivative · entry 2

BYBEE CLINTON · CIK 0001219043 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,714

F2 · kind: Distribution of Common Stock held by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P. to its partners for no consideration.

F5 · kind: Change from indirect to direct ownership of shares previously reported as beneficially owned by the reporting person.

F2 · price: Distribution of Common Stock held by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P. to its partners for no consideration.

SEC source: 0001012975-19-000711 · edgar.xml · nonDerivative · entry 1

BYBEE CLINTON · CIK 0001219043 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 0

F2 · kind: Distribution of Common Stock held by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P. to its partners for no consideration.

F2 · price: Distribution of Common Stock held by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P. to its partners for no consideration.

F1 · balance_after: ARCH Venture Fund V, L.P., and ARCH V Entrepreneurs Fund, L.P. no longer hold shares of the Company.

F3 · ownership.nature: Clinton Bybee, a member of the board of directors, is a managing director of ARCH Venture Partners V, LLC, and may be deemed to beneficially own certain of the shares held of record by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P. Mr. Bybee disclaims beneficial ownership of all shares held of record by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P., of which he does not have an actual pecuniary interest. By virtue of their relationship as affiliated entities who have overlapping general partners and managing directors, ARCH Venture Fund V, L.P., ARCH V Entrepreneurs Fund, L.P., ARCH Venture Partners V, L.P., ARCH Venture Partners V, LLC and Mr. Bybee may be deemed to share the voting and investment control of the record shares.

F4 · ownership.nature: ARCH Venture Partners V, L.P., as the sole general partner of ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P., may be deemed to beneficially own certain of the shares held of record by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P., but disclaims beneficial ownership of such shares, in which it does not have an actual pecuniary interest. ARCH Venture Partners V, LLC, as the sole general partner of ARCH Venture Partners V, L.P., may be deemed to beneficially own certain of the shares held of record by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P., but disclaims beneficial ownership of such shares, in which it does not have an actual pecuniary interest.

SEC source: 0001246360-19-002502 · form.xml · nonDerivative · entry 2

ALBERG TOM A · CIK 0001184752 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 77,107

F2 · kind: Distribution of Common Stock held by ARCH Venture Fund V, L.P. to its partners for no consideration.

SEC source: 0001246360-19-002437 · form.xml · derivative · entry 3

DOSSETT JEFFREY · CIK 0001578147 · EVP, Sales & Marketing

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 71,971

Underlying: COMMON STOCK · 250 shares

Expires 2028-05-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: 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.

SEC source: 0001246360-19-002437 · form.xml · nonDerivative · entry 2

DOSSETT JEFFREY · CIK 0001578147 · EVP, Sales & Marketing

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,000

F1 · kind: The sales reported by Mr. Dossett were effected pursuant to a Rule 10b5-1 trading plan adopted on September 6, 2019.

SEC source: 0001246360-19-002437 · form.xml · nonDerivative · entry 1

DOSSETT JEFFREY · CIK 0001578147 · EVP, Sales & Marketing

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,250

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001246360-19-002428 · form.xml · nonDerivative · entry 2

ALBERG TOM A · CIK 0001184752 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 74,769

F2 · kind: The sales reported by Mr. Alberg were effected pursuant to a Rule 10b5-1 trading plan.

SEC source: 0001246360-19-002427 · form.xml · nonDerivative · entry 2

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 205,478

F1 · kind: The sales reported by Mr. Diorio were effected pursuant to a Rule 10b5-1 trading plan adopted on March 5, 2019.

F2 · shares: 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 $35.00 to $35.01, 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.

SEC source: 0001246360-19-002393 · form.xml · nonDerivative · entry 4

BRODERSEN ERIC · CIK 0001677723 · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,600

F1 · kind: The sales reported by Mr. Brodersen were effected pursuant to a Rule 10b5-1 trading plan adopted on November 26, 2018.

F5 · shares: 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 $34.01 to $34.865, 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.

SEC source: 0001246360-19-002397 · form.xml · nonDerivative · entry 1

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 214,978

SEC source: 0001246360-19-002396 · form.xml · nonDerivative · entry 3

ALBERG TOM A · CIK 0001184752 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Raven Trust Fund

Disclosed balance after: 19,219

F1 · kind: The sales reported by Mr. Alberg were effected pursuant to a Rule 10b5-1 trading plan.

F2 · ownership.nature: Shares held of record by Raven Trust Fund. Mr. Alberg shares voting and dispositive control over such shares but disclaims beneficial ownership over such shares.

SEC source: 0001246360-19-002396 · form.xml · nonDerivative · entry 2

ALBERG TOM A · CIK 0001184752 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Raven Trust Fund

Disclosed balance after: 25,219

F1 · kind: The sales reported by Mr. Alberg were effected pursuant to a Rule 10b5-1 trading plan.

F2 · ownership.nature: Shares held of record by Raven Trust Fund. Mr. Alberg shares voting and dispositive control over such shares but disclaims beneficial ownership over such shares.

SEC source: 0001246360-19-002393 · form.xml · nonDerivative · entry 3

BRODERSEN ERIC · CIK 0001677723 · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,600

F1 · kind: The sales reported by Mr. Brodersen were effected pursuant to a Rule 10b5-1 trading plan adopted on November 26, 2018.

F4 · shares: 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 $35.00 to $35.34, 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.

SEC source: 0001246360-19-002393 · form.xml · nonDerivative · entry 2

BRODERSEN ERIC · CIK 0001677723 · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,400

F1 · kind: The sales reported by Mr. Brodersen were effected pursuant to a Rule 10b5-1 trading plan adopted on November 26, 2018.

F3 · shares: 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 $33.99 to $34.95, 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.

SEC source: 0001246360-19-002393 · form.xml · nonDerivative · entry 1

BRODERSEN ERIC · CIK 0001677723 · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,300

F1 · kind: The sales reported by Mr. Brodersen were effected pursuant to a Rule 10b5-1 trading plan adopted on November 26, 2018.

F2 · shares: 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 $32.91 to $33.84, 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.

SEC source: 0001246360-19-002278 · form.xml · derivative · entry 1

ALBERG TOM A · CIK 0001184752 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,411

Underlying: COMMON STOCK · 3,411 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Impinj common stock.

F2 · derivative.exercise_date: The restricted stock units will fully vest on October 23, 2020.

F2 · derivative.expiration_date: The restricted stock units will fully vest on October 23, 2020.

SEC source: 0001246360-19-002279 · form.xml · derivative · entry 1

WISE THERESA · CIK 0001677728 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,411

Underlying: COMMON STOCK · 3,411 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Impinj common stock.

F2 · derivative.exercise_date: The restricted stock units will fully vest on October 23, 2020.

F2 · derivative.expiration_date: The restricted stock units will fully vest on October 23, 2020.

SEC source: 0001246360-19-002277 · form.xml · derivative · entry 1

VAN OPPEN PETER H · CIK 0001057881 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,264

Underlying: COMMON STOCK · 4,264 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Impinj common stock.

F2 · derivative.exercise_date: The restricted stock units will fully vest on October 23, 2020.

F2 · derivative.expiration_date: The restricted stock units will fully vest on October 23, 2020.

SEC source: 0001246360-19-002283 · form.xml · derivative · entry 1

PHELAN CATHAL G · CIK 0001259761 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,411

Underlying: COMMON STOCK · 3,411 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Impinj common stock.

F2 · derivative.exercise_date: The restricted stock units will fully vest on October 23, 2020.

F2 · derivative.expiration_date: The restricted stock units will fully vest on October 23, 2020.

SEC source: 0001246360-19-002281 · form.xml · derivative · entry 1

SESSLER GREGORY · CIK 0001285810 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,411

Underlying: COMMON STOCK · 3,411 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Impinj common stock.

F2 · derivative.exercise_date: The restricted stock units will fully vest on October 23, 2020.

F2 · derivative.expiration_date: The restricted stock units will fully vest on October 23, 2020.

SEC source: 0001246360-19-002282 · form.xml · derivative · entry 1

Gibson Daniel Patrick · CIK 0001745725 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,411

Underlying: COMMON STOCK · 3,411 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Impinj common stock.

F2 · derivative.exercise_date: The restricted stock units will fully vest on October 23, 2020.

F2 · derivative.expiration_date: The restricted stock units will fully vest on October 23, 2020.

SEC source: 0001246360-19-002280 · form.xml · derivative · entry 1

BYBEE CLINTON · CIK 0001219043 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,411

Underlying: COMMON STOCK · 3,411 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Impinj common stock.

F2 · derivative.exercise_date: The restricted stock units will fully vest on October 23, 2020.

F2 · derivative.expiration_date: The restricted stock units will fully vest on October 23, 2020.

SEC source: 0001246360-19-002228 · form.xml · nonDerivative · entry 2

BRODERSEN ERIC · CIK 0001677723 · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,100

F1 · kind: The sales reported by Mr. Brodersen were effected pursuant to a Rule 10b5-1 trading plan adopted on November 26, 2018.

F3 · shares: 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 $31.41 to $31.78, 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.

SEC source: 0001246360-19-002228 · form.xml · nonDerivative · entry 1

BRODERSEN ERIC · CIK 0001677723 · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,600

F1 · kind: The sales reported by Mr. Brodersen were effected pursuant to a Rule 10b5-1 trading plan adopted on November 26, 2018.

F2 · shares: 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 $30.70 to $31.17, 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.

SEC source: 0001246360-19-002109 · form.xml · nonDerivative · entry 3

BRODERSEN ERIC · CIK 0001677723 · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,100

F1 · kind: The sales reported by Mr. Brodersen were effected pursuant to a Rule 10b5-1 trading plan adopted on November 26, 2018.

F4 · shares: 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 $34.76 to $34.96, 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.

SEC source: 0001246360-19-002109 · form.xml · nonDerivative · entry 2

BRODERSEN ERIC · CIK 0001677723 · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,200

F1 · kind: The sales reported by Mr. Brodersen were effected pursuant to a Rule 10b5-1 trading plan adopted on November 26, 2018.

F3 · shares: 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 $33.75 to $34.72, 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.

SEC source: 0001246360-19-002113 · form.xml · nonDerivative · entry 2

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 224,978

F1 · kind: The sales reported by Mr. Diorio were effected pursuant to a Rule 10b5-1 trading plan adopted on March 5, 2019.

SEC source: 0001246360-19-002109 · form.xml · nonDerivative · entry 1

BRODERSEN ERIC · CIK 0001677723 · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,600

F1 · kind: The sales reported by Mr. Brodersen were effected pursuant to a Rule 10b5-1 trading plan adopted on November 26, 2018.

F2 · shares: 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 $33.20 to $33.93, 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.

SEC source: 0001246360-19-002093 · form.xml · nonDerivative · entry 1

SESSLER GREGORY · CIK 0001285810 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,864

F1 · shares: 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 $32.1632 to $32.2232, 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.

SEC source: 0001246360-19-002085 · form.xml · nonDerivative · entry 4

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 234,978

F1 · kind: The sales reported by Mr. Diorio were effected pursuant to a Rule 10b5-1 trading plan adopted on March 5, 2019.

F4 · shares: 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 $35.19 to $35.36, 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.

SEC source: 0001246360-19-002085 · form.xml · nonDerivative · entry 3

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 235,478

F1 · kind: The sales reported by Mr. Diorio were effected pursuant to a Rule 10b5-1 trading plan adopted on March 5, 2019.

F3 · shares: 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 $36.05 to $36.50, 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.

SEC source: 0001246360-19-002085 · form.xml · nonDerivative · entry 2

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 236,978

F1 · kind: The sales reported by Mr. Diorio were effected pursuant to a Rule 10b5-1 trading plan adopted on March 5, 2019.

F2 · shares: 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 $35.00 to $35.90, 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.

SEC source: 0001246360-19-002198 · form.xml · derivative · entry 2

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 62,500

Underlying: COMMON STOCK · 62,500 shares

Expires 2019-09-05

F2 · derivative.exercise_date: One-fourth of the shares subject to the option shall vest on July 1, 2020, and 1/48th of the shares subject to the option shall vest each month thereafter.

SEC source: 0001246360-19-002198 · form.xml · derivative · entry 1

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 62,500

Underlying: COMMON STOCK · 62,500 shares

Expires 2019-09-04

F1 · derivative.exercise_date: One-fourth of the shares subject to the grant shall vest on July 1, 2020, and 1/16th of the shares subject to the grant shall vest each quarter thereafter.

SEC source: 0001012975-19-000594 · edgar.xml · nonDerivative · entry 2

BYBEE CLINTON · CIK 0001219043 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,957

F2 · kind: Distribution of Common Stock held by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P. to its partners for no consideration.

F5 · kind: Change from indirect to direct ownership of shares previously reported as beneficially owned by the reporting person.

F2 · price: Distribution of Common Stock held by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P. to its partners for no consideration.

SEC source: 0001012975-19-000594 · edgar.xml · nonDerivative · entry 1

BYBEE CLINTON · CIK 0001219043 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 410,820

F2 · kind: Distribution of Common Stock held by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P. to its partners for no consideration.

F2 · price: Distribution of Common Stock held by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P. to its partners for no consideration.

F1 · balance_after: 408,183 of these shares are held of record by ARCH Venture Fund V, L.P., and 2,637 of these shares are held of record by ARCH V Entrepreneurs Fund, L.P.

F3 · ownership.nature: Clinton Bybee, a member of the board of directors, is a managing director of ARCH Venture Partners V, LLC, and may be deemed to beneficially own certain of the shares held of record by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P. Mr. Bybee disclaims beneficial ownership of all shares held of record by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P., of which he does not have an actual pecuniary interest. By virtue of their relationship as affiliated entities who have overlapping general partners and managing directors, ARCH Venture Fund V, L.P., ARCH V Entrepreneurs Fund, L.P., ARCH Venture Partners V, L.P., ARCH Venture Partners V, LLC and Mr. Bybee may be deemed to share the voting and investment control of the record shares.

F4 · ownership.nature: ARCH Venture Partners V, L.P., as the sole general partner of ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P., may be deemed to beneficially own certain of the shares held of record by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P., but disclaims beneficial ownership of such shares, in which it does not have an actual pecuniary interest. ARCH Venture Partners V, LLC, as the sole general partner of ARCH Venture Partners V, L.P., may be deemed to beneficially own certain of the shares held of record by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P., but disclaims beneficial ownership of such shares, in which it does not have an actual pecuniary interest.

SEC source: 0001246360-19-002037 · form.xml · nonDerivative · entry 2

ALBERG TOM A · CIK 0001184752 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,269

F2 · kind: Distribution of Common Stock held by ARCH Venture Fund V, L.P. to its partners for no consideration.

F2 · shares: Distribution of Common Stock held by ARCH Venture Fund V, L.P. to its partners for no consideration.

SEC source: 0001246360-20-000450 · form.xml · nonDerivative · entry 2

MASTERS DENISE · CIK 0001736540 · VP Accounting

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,732

F3 · security: The reporting person is voluntarily reporting the acquisition of shares of the issuer's common stock pursuant to the Employee Stock Purchase Plan ("ESPP"), for the ESPP Purchase Period (as defined in the ESPP) of February 20, 2019 through August 20, 2019. This transaction is also exempt under Rule 16b-3(c).

F4 · shares: The Purchase Period ended August 20, 2019 and is the first of two Purchase Periods comprising the Offering Period (as defined in the ESPP) that began February 20, 2019.

SEC source: 0001246360-19-001981 · form.xml · derivative · entry 4

VAN OPPEN PETER H · CIK 0001057881 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: COMMON STOCK · 5,942 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Impinj common stock.

F5 · derivative.exercise_date: On August 13, 2018, the reporting person was granted 5,942 restricted stock units (RSUs). These RSUs fully vested on August 13, 2019.

F5 · derivative.expiration_date: On August 13, 2018, the reporting person was granted 5,942 restricted stock units (RSUs). These RSUs fully vested on August 13, 2019.

SEC source: 0001246360-19-001981 · form.xml · nonDerivative · entry 3

VAN OPPEN PETER H · CIK 0001057881 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,000

F3 · shares: 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 $36.68 to $37.00, 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.

SEC source: 0001246360-19-001981 · form.xml · nonDerivative · entry 2

VAN OPPEN PETER H · CIK 0001057881 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 54,372

F2 · shares: 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 $35.55 to $36.45, 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.

SEC source: 0001246360-19-001981 · form.xml · nonDerivative · entry 1

VAN OPPEN PETER H · CIK 0001057881 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 58,470

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Restricted stock units convert to common stock on a one to one basis.