PI

SEC source: 0001821687-26-000002 · form4-05292026_090506.xml · derivative · entry 1

Valdez Arthur L Jr · CIK 0001821687 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,896

Underlying: Common Stock · 1,896 shares

Expires not disclosed

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

F2 · derivative.exercise_date: The restricted stock units will fully vest on May 28, 2027.

F2 · derivative.expiration_date: The restricted stock units will fully vest on May 28, 2027.

SEC source: 0001969449-26-000002 · form4-05292026_090557.xml · derivative · entry 3

WASHINGTON MIRON · CIK 0001969449 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,896

Underlying: Common Stock · 1,896 shares

Expires not disclosed

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

F3 · derivative.exercise_date: The restricted stock units will fully vest on May 28, 2027.

F3 · derivative.expiration_date: The restricted stock units will fully vest on May 28, 2027.

SEC source: 0001969449-26-000002 · form4-05292026_090557.xml · derivative · entry 2

WASHINGTON MIRON · CIK 0001969449 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,114 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.

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

F2 · derivative.exercise_date: On June 5, 2024, the reporting person was granted 3,114 RSUs. These RSUs fully vested on May 28, 2026.

F2 · derivative.expiration_date: On June 5, 2024, the reporting person was granted 3,114 RSUs. These RSUs fully vested on May 28, 2026.

SEC source: 0001969449-26-000002 · form4-05292026_090557.xml · nonDerivative · entry 1

WASHINGTON MIRON · CIK 0001969449 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,154

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: 0001300840-26-000002 · form4-05292026_090545.xml · derivative · entry 3

PADVAL UMESH · CIK 0001300840 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,896

Underlying: Common Stock · 1,896 shares

Expires not disclosed

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

F3 · derivative.exercise_date: The restricted stock units will fully vest on May 28, 2027.

F3 · derivative.expiration_date: The restricted stock units will fully vest on May 28, 2027.

SEC source: 0001300840-26-000002 · form4-05292026_090545.xml · derivative · entry 2

PADVAL UMESH · CIK 0001300840 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,114 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.

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

F2 · derivative.exercise_date: On June 5, 2025, the reporting person was granted 3,114 RSUs. These RSUs fully vested on May 28, 2026.

F2 · derivative.expiration_date: On June 5, 2025, the reporting person was granted 3,114 RSUs. These RSUs fully vested on May 28, 2026.

SEC source: 0001300840-26-000002 · form4-05292026_090545.xml · nonDerivative · entry 1

PADVAL UMESH · CIK 0001300840 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,654

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: 0001181928-26-000026 · form4-05292026_090516.xml · derivative · entry 4

Sanghi Steve · CIK 0001181928 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,085

Underlying: Common Stock · 2,085 shares

Expires not disclosed

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

F3 · derivative.exercise_date: The restricted stock units will fully vest on May 28, 2027.

F3 · derivative.expiration_date: The restricted stock units will fully vest on May 28, 2027.

SEC source: 0001181928-26-000026 · form4-05292026_090516.xml · derivative · entry 3

Sanghi Steve · CIK 0001181928 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,425 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.

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

F2 · derivative.exercise_date: On June 5, 2025, the reporting person was granted 3,425 RSUs. These RSUs fully vested on May 28, 2026.

F2 · derivative.expiration_date: On June 5, 2025, the reporting person was granted 3,425 RSUs. These RSUs fully vested on May 28, 2026.

SEC source: 0001181928-26-000026 · form4-05292026_090516.xml · nonDerivative · entry 1

Sanghi Steve · CIK 0001181928 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,274

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: 0001480603-26-000002 · form4-05292026_090505.xml · derivative · entry 3

Rao Meera · CIK 0001480603 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,896

Underlying: Common Stock · 1,896 shares

Expires not disclosed

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

F3 · derivative.exercise_date: The restricted stock units will fully vest on May 28, 2027.

F3 · derivative.expiration_date: The restricted stock units will fully vest on May 28, 2027.

SEC source: 0001480603-26-000002 · form4-05292026_090505.xml · derivative · entry 2

Rao Meera · CIK 0001480603 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,114 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.

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

F2 · derivative.exercise_date: On June 5, 2025, the reporting person was granted 3,114 RSUs. These RSUs fully vested on May 28, 2026.

F2 · derivative.expiration_date: On June 5, 2025, the reporting person was granted 3,114 RSUs. These RSUs fully vested on May 28, 2026.

SEC source: 0001480603-26-000002 · form4-05292026_090505.xml · nonDerivative · entry 1

Rao Meera · CIK 0001480603 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,322

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: 0001677721-26-000006 · form4-06092026_050601.xml · nonDerivative · entry 2

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 390,302

F1 · kind: For estate planning purposes, on May 26, 2026 (the "Transfer Date"), Dr. Chris Diorio ("Dr. Diorio") received 180,000 shares of the issuer's common stock from the 2012 Diorio Descendants Irrevocable Trust (the "Diorio Trust") in exchange for the simultaneous transfer by Dr. Diorio of 180,000 shares of the issuer's common stock to the Diorio Trust. The estimated per-share value was $156.675, the average of the high and low sales prices of a share of the issuer's common stock on the Transfer Date.

F2 · kind: The exchange of shares reported by Dr. Diorio was effected pursuant to a Rule 10b5-1 trading plan adopted on February 23, 2026.

F1 · price: For estate planning purposes, on May 26, 2026 (the "Transfer Date"), Dr. Chris Diorio ("Dr. Diorio") received 180,000 shares of the issuer's common stock from the 2012 Diorio Descendants Irrevocable Trust (the "Diorio Trust") in exchange for the simultaneous transfer by Dr. Diorio of 180,000 shares of the issuer's common stock to the Diorio Trust. The estimated per-share value was $156.675, the average of the high and low sales prices of a share of the issuer's common stock on the Transfer Date.

SEC source: 0001677721-26-000006 · form4-06092026_050601.xml · nonDerivative · entry 1

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 570,302

F1 · kind: For estate planning purposes, on May 26, 2026 (the "Transfer Date"), Dr. Chris Diorio ("Dr. Diorio") received 180,000 shares of the issuer's common stock from the 2012 Diorio Descendants Irrevocable Trust (the "Diorio Trust") in exchange for the simultaneous transfer by Dr. Diorio of 180,000 shares of the issuer's common stock to the Diorio Trust. The estimated per-share value was $156.675, the average of the high and low sales prices of a share of the issuer's common stock on the Transfer Date.

F2 · kind: The exchange of shares reported by Dr. Diorio was effected pursuant to a Rule 10b5-1 trading plan adopted on February 23, 2026.

F1 · price: For estate planning purposes, on May 26, 2026 (the "Transfer Date"), Dr. Chris Diorio ("Dr. Diorio") received 180,000 shares of the issuer's common stock from the 2012 Diorio Descendants Irrevocable Trust (the "Diorio Trust") in exchange for the simultaneous transfer by Dr. Diorio of 180,000 shares of the issuer's common stock to the Diorio Trust. The estimated per-share value was $156.675, the average of the high and low sales prices of a share of the issuer's common stock on the Transfer Date.

SEC source: 0002003074-26-000005 · primary_doc.xml · nonDerivative · entry 5

SYLEBRA CAPITAL LLC · CIK 0002003074 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote (1) (2)

Disclosed balance after: 1,022,171

F1 · ownership.nature: (1) Sylebra Capital LLC (Sylebra US) and Sylebra Capital Limited (Sylebra HK) are the investment sub-advisers to Sylebra Capital Partners Master Fund, Ltd. (SCPMF), Sylebra Capital Menlo Master Fund (MENLO MF), and other advisory clients. Sylebra Capital Management (Sylebra Cayman) is the investment manager and parent of Sylebra HK. Sylebra Cayman owns 100% of the shares of Sylebra HK and Daniel Patrick Gibson (Gibson) owns more than 100% of the Class A shares of Sylebra Cayman and 100% of the share capital of Sylebra US. Gibson is a founder and Chief Investment Officer of Sylebra Cayman. In such capacities, Sylebra US, Sylebra HK, Sylebra Cayman and Gibson may be deemed to share voting and dispositive power over the shares of common stock of the Issuer held by SCP MF, MENLO MF, and other advisory clients.

F2 · ownership.nature: (2) These securities are held by SCP MF, MENLO MF, and other advisory clients. Gibson is a member of the board of directors of the Issuer. Sylebra US, Sylebra HK, Sylebra Cayman and Gibson disclaim beneficial ownership of these securities, and this report shall not be deemed an admission that Sylebra US, Sylebra HK, Sylebra Cayman and Gibson are the beneficial owners of such securities, except to the extent of their pecuniary interest, if any, therein.

SEC source: 0002003074-26-000005 · primary_doc.xml · nonDerivative · entry 4

SYLEBRA CAPITAL LLC · CIK 0002003074 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote (1) (2)

Disclosed balance after: 1,034,877

F1 · ownership.nature: (1) Sylebra Capital LLC (Sylebra US) and Sylebra Capital Limited (Sylebra HK) are the investment sub-advisers to Sylebra Capital Partners Master Fund, Ltd. (SCPMF), Sylebra Capital Menlo Master Fund (MENLO MF), and other advisory clients. Sylebra Capital Management (Sylebra Cayman) is the investment manager and parent of Sylebra HK. Sylebra Cayman owns 100% of the shares of Sylebra HK and Daniel Patrick Gibson (Gibson) owns more than 100% of the Class A shares of Sylebra Cayman and 100% of the share capital of Sylebra US. Gibson is a founder and Chief Investment Officer of Sylebra Cayman. In such capacities, Sylebra US, Sylebra HK, Sylebra Cayman and Gibson may be deemed to share voting and dispositive power over the shares of common stock of the Issuer held by SCP MF, MENLO MF, and other advisory clients.

F2 · ownership.nature: (2) These securities are held by SCP MF, MENLO MF, and other advisory clients. Gibson is a member of the board of directors of the Issuer. Sylebra US, Sylebra HK, Sylebra Cayman and Gibson disclaim beneficial ownership of these securities, and this report shall not be deemed an admission that Sylebra US, Sylebra HK, Sylebra Cayman and Gibson are the beneficial owners of such securities, except to the extent of their pecuniary interest, if any, therein.

SEC source: 0002003074-26-000004 · primary_doc.xml · nonDerivative · entry 5

SYLEBRA CAPITAL LLC · CIK 0002003074 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote (1) (2)

Disclosed balance after: 1,022,171

F1 · ownership.nature: (1) Sylebra Capital LLC (Sylebra US) and Sylebra Capital Limited (Sylebra HK) are the investment sub-advisers to Sylebra Capital Partners Master Fund, Ltd. (SCPMF), Sylebra Capital Menlo Master Fund (MENLO MF), and other advisory clients. Sylebra Capital Management (Sylebra Cayman) is the investment manager and parent of Sylebra HK. Sylebra Cayman owns 100% of the shares of Sylebra HK and Daniel Patrick Gibson (Gibson) owns more than 100% of the Class A shares of Sylebra Cayman and 100% of the share capital of Sylebra US. Gibson is a founder and Chief Investment Officer of Sylebra Cayman. In such capacities, Sylebra US, Sylebra HK, Sylebra Cayman and Gibson may be deemed to share voting and dispositive power over the shares of common stock of the Issuer held by SCP MF, MENLO MF, and other advisory clients.

F2 · ownership.nature: (2) These securities are held by SCP MF, MENLO MF, and other advisory clients. Gibson is a member of the board of directors of the Issuer. Sylebra US, Sylebra HK, Sylebra Cayman and Gibson disclaim beneficial ownership of these securities, and this report shall not be deemed an admission that Sylebra US, Sylebra HK, Sylebra Cayman and Gibson are the beneficial owners of such securities, except to the extent of their pecuniary interest, if any, therein.

SEC source: 0002003074-26-000004 · primary_doc.xml · nonDerivative · entry 4

SYLEBRA CAPITAL LLC · CIK 0002003074 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote (1) (2)

Disclosed balance after: 1,034,877

F1 · ownership.nature: (1) Sylebra Capital LLC (Sylebra US) and Sylebra Capital Limited (Sylebra HK) are the investment sub-advisers to Sylebra Capital Partners Master Fund, Ltd. (SCPMF), Sylebra Capital Menlo Master Fund (MENLO MF), and other advisory clients. Sylebra Capital Management (Sylebra Cayman) is the investment manager and parent of Sylebra HK. Sylebra Cayman owns 100% of the shares of Sylebra HK and Daniel Patrick Gibson (Gibson) owns more than 100% of the Class A shares of Sylebra Cayman and 100% of the share capital of Sylebra US. Gibson is a founder and Chief Investment Officer of Sylebra Cayman. In such capacities, Sylebra US, Sylebra HK, Sylebra Cayman and Gibson may be deemed to share voting and dispositive power over the shares of common stock of the Issuer held by SCP MF, MENLO MF, and other advisory clients.

F2 · ownership.nature: (2) These securities are held by SCP MF, MENLO MF, and other advisory clients. Gibson is a member of the board of directors of the Issuer. Sylebra US, Sylebra HK, Sylebra Cayman and Gibson disclaim beneficial ownership of these securities, and this report shall not be deemed an admission that Sylebra US, Sylebra HK, Sylebra Cayman and Gibson are the beneficial owners of such securities, except to the extent of their pecuniary interest, if any, therein.

SEC source: 0002003074-26-000005 · primary_doc.xml · nonDerivative · entry 3

SYLEBRA CAPITAL LLC · CIK 0002003074 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote (1) (2)

Disclosed balance after: 1,059,003

F1 · ownership.nature: (1) Sylebra Capital LLC (Sylebra US) and Sylebra Capital Limited (Sylebra HK) are the investment sub-advisers to Sylebra Capital Partners Master Fund, Ltd. (SCPMF), Sylebra Capital Menlo Master Fund (MENLO MF), and other advisory clients. Sylebra Capital Management (Sylebra Cayman) is the investment manager and parent of Sylebra HK. Sylebra Cayman owns 100% of the shares of Sylebra HK and Daniel Patrick Gibson (Gibson) owns more than 100% of the Class A shares of Sylebra Cayman and 100% of the share capital of Sylebra US. Gibson is a founder and Chief Investment Officer of Sylebra Cayman. In such capacities, Sylebra US, Sylebra HK, Sylebra Cayman and Gibson may be deemed to share voting and dispositive power over the shares of common stock of the Issuer held by SCP MF, MENLO MF, and other advisory clients.

F2 · ownership.nature: (2) These securities are held by SCP MF, MENLO MF, and other advisory clients. Gibson is a member of the board of directors of the Issuer. Sylebra US, Sylebra HK, Sylebra Cayman and Gibson disclaim beneficial ownership of these securities, and this report shall not be deemed an admission that Sylebra US, Sylebra HK, Sylebra Cayman and Gibson are the beneficial owners of such securities, except to the extent of their pecuniary interest, if any, therein.

SEC source: 0002003074-26-000005 · primary_doc.xml · nonDerivative · entry 2

SYLEBRA CAPITAL LLC · CIK 0002003074 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote (1) (2)

Disclosed balance after: 1,068,525

F1 · ownership.nature: (1) Sylebra Capital LLC (Sylebra US) and Sylebra Capital Limited (Sylebra HK) are the investment sub-advisers to Sylebra Capital Partners Master Fund, Ltd. (SCPMF), Sylebra Capital Menlo Master Fund (MENLO MF), and other advisory clients. Sylebra Capital Management (Sylebra Cayman) is the investment manager and parent of Sylebra HK. Sylebra Cayman owns 100% of the shares of Sylebra HK and Daniel Patrick Gibson (Gibson) owns more than 100% of the Class A shares of Sylebra Cayman and 100% of the share capital of Sylebra US. Gibson is a founder and Chief Investment Officer of Sylebra Cayman. In such capacities, Sylebra US, Sylebra HK, Sylebra Cayman and Gibson may be deemed to share voting and dispositive power over the shares of common stock of the Issuer held by SCP MF, MENLO MF, and other advisory clients.

F2 · ownership.nature: (2) These securities are held by SCP MF, MENLO MF, and other advisory clients. Gibson is a member of the board of directors of the Issuer. Sylebra US, Sylebra HK, Sylebra Cayman and Gibson disclaim beneficial ownership of these securities, and this report shall not be deemed an admission that Sylebra US, Sylebra HK, Sylebra Cayman and Gibson are the beneficial owners of such securities, except to the extent of their pecuniary interest, if any, therein.

SEC source: 0002003074-26-000005 · primary_doc.xml · nonDerivative · entry 1

SYLEBRA CAPITAL LLC · CIK 0002003074 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote (1) (2)

Disclosed balance after: 1,070,085

F1 · ownership.nature: (1) Sylebra Capital LLC (Sylebra US) and Sylebra Capital Limited (Sylebra HK) are the investment sub-advisers to Sylebra Capital Partners Master Fund, Ltd. (SCPMF), Sylebra Capital Menlo Master Fund (MENLO MF), and other advisory clients. Sylebra Capital Management (Sylebra Cayman) is the investment manager and parent of Sylebra HK. Sylebra Cayman owns 100% of the shares of Sylebra HK and Daniel Patrick Gibson (Gibson) owns more than 100% of the Class A shares of Sylebra Cayman and 100% of the share capital of Sylebra US. Gibson is a founder and Chief Investment Officer of Sylebra Cayman. In such capacities, Sylebra US, Sylebra HK, Sylebra Cayman and Gibson may be deemed to share voting and dispositive power over the shares of common stock of the Issuer held by SCP MF, MENLO MF, and other advisory clients.

F2 · ownership.nature: (2) These securities are held by SCP MF, MENLO MF, and other advisory clients. Gibson is a member of the board of directors of the Issuer. Sylebra US, Sylebra HK, Sylebra Cayman and Gibson disclaim beneficial ownership of these securities, and this report shall not be deemed an admission that Sylebra US, Sylebra HK, Sylebra Cayman and Gibson are the beneficial owners of such securities, except to the extent of their pecuniary interest, if any, therein.

SEC source: 0002003074-26-000004 · primary_doc.xml · nonDerivative · entry 3

SYLEBRA CAPITAL LLC · CIK 0002003074 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote (1) (2)

Disclosed balance after: 1,059,003

F1 · ownership.nature: (1) Sylebra Capital LLC (Sylebra US) and Sylebra Capital Limited (Sylebra HK) are the investment sub-advisers to Sylebra Capital Partners Master Fund, Ltd. (SCPMF), Sylebra Capital Menlo Master Fund (MENLO MF), and other advisory clients. Sylebra Capital Management (Sylebra Cayman) is the investment manager and parent of Sylebra HK. Sylebra Cayman owns 100% of the shares of Sylebra HK and Daniel Patrick Gibson (Gibson) owns more than 100% of the Class A shares of Sylebra Cayman and 100% of the share capital of Sylebra US. Gibson is a founder and Chief Investment Officer of Sylebra Cayman. In such capacities, Sylebra US, Sylebra HK, Sylebra Cayman and Gibson may be deemed to share voting and dispositive power over the shares of common stock of the Issuer held by SCP MF, MENLO MF, and other advisory clients.

F2 · ownership.nature: (2) These securities are held by SCP MF, MENLO MF, and other advisory clients. Gibson is a member of the board of directors of the Issuer. Sylebra US, Sylebra HK, Sylebra Cayman and Gibson disclaim beneficial ownership of these securities, and this report shall not be deemed an admission that Sylebra US, Sylebra HK, Sylebra Cayman and Gibson are the beneficial owners of such securities, except to the extent of their pecuniary interest, if any, therein.

SEC source: 0002003074-26-000004 · primary_doc.xml · nonDerivative · entry 2

SYLEBRA CAPITAL LLC · CIK 0002003074 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote (1) (2)

Disclosed balance after: 1,068,525

F1 · ownership.nature: (1) Sylebra Capital LLC (Sylebra US) and Sylebra Capital Limited (Sylebra HK) are the investment sub-advisers to Sylebra Capital Partners Master Fund, Ltd. (SCPMF), Sylebra Capital Menlo Master Fund (MENLO MF), and other advisory clients. Sylebra Capital Management (Sylebra Cayman) is the investment manager and parent of Sylebra HK. Sylebra Cayman owns 100% of the shares of Sylebra HK and Daniel Patrick Gibson (Gibson) owns more than 100% of the Class A shares of Sylebra Cayman and 100% of the share capital of Sylebra US. Gibson is a founder and Chief Investment Officer of Sylebra Cayman. In such capacities, Sylebra US, Sylebra HK, Sylebra Cayman and Gibson may be deemed to share voting and dispositive power over the shares of common stock of the Issuer held by SCP MF, MENLO MF, and other advisory clients.

F2 · ownership.nature: (2) These securities are held by SCP MF, MENLO MF, and other advisory clients. Gibson is a member of the board of directors of the Issuer. Sylebra US, Sylebra HK, Sylebra Cayman and Gibson disclaim beneficial ownership of these securities, and this report shall not be deemed an admission that Sylebra US, Sylebra HK, Sylebra Cayman and Gibson are the beneficial owners of such securities, except to the extent of their pecuniary interest, if any, therein.

SEC source: 0002003074-26-000004 · primary_doc.xml · nonDerivative · entry 1

SYLEBRA CAPITAL LLC · CIK 0002003074 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote (1) (2)

Disclosed balance after: 1,070,085

F1 · ownership.nature: (1) Sylebra Capital LLC (Sylebra US) and Sylebra Capital Limited (Sylebra HK) are the investment sub-advisers to Sylebra Capital Partners Master Fund, Ltd. (SCPMF), Sylebra Capital Menlo Master Fund (MENLO MF), and other advisory clients. Sylebra Capital Management (Sylebra Cayman) is the investment manager and parent of Sylebra HK. Sylebra Cayman owns 100% of the shares of Sylebra HK and Daniel Patrick Gibson (Gibson) owns more than 100% of the Class A shares of Sylebra Cayman and 100% of the share capital of Sylebra US. Gibson is a founder and Chief Investment Officer of Sylebra Cayman. In such capacities, Sylebra US, Sylebra HK, Sylebra Cayman and Gibson may be deemed to share voting and dispositive power over the shares of common stock of the Issuer held by SCP MF, MENLO MF, and other advisory clients.

F2 · ownership.nature: (2) These securities are held by SCP MF, MENLO MF, and other advisory clients. Gibson is a member of the board of directors of the Issuer. Sylebra US, Sylebra HK, Sylebra Cayman and Gibson disclaim beneficial ownership of these securities, and this report shall not be deemed an admission that Sylebra US, Sylebra HK, Sylebra Cayman and Gibson are the beneficial owners of such securities, except to the extent of their pecuniary interest, if any, therein.

SEC source: 0002003074-26-000002 · primary_doc.xml · nonDerivative · entry 1

SYLEBRA CAPITAL LLC · CIK 0002003074 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote (1)&(2)

Disclosed balance after: 1,132,152

F1 · ownership.nature: (1) Sylebra Capital Limited (Sylebra HK) is the investment sub-adviser to Sylebra Capital Partners Master Fund, Ltd. (SCPMF), Sylebra Capital Parc Master Fund (PARC MF),Sylebra Capital Menlo Master Fund (MENLO MF), and other advisory clients. Sylebra Capital Management (Sylebra Cayman) is the investment manager and parent of Sylebra HK. Sylebra Cayman owns 100% of the shares of Sylebra HK. Daniel Gibson (Mr. Gibson) owns more than 99% of the shares of Sylebra Cayman. In such capacities, Sylebra HK, Sylebra Cayman and Mr. Gibson may be deemed to share voting and dispositive power over the shares of common stock of the Issuer held by SCP MF, PARC MF, MENLO MF, and other advisory clients.

F2 · ownership.nature: (2) These securities are held by SCP MF, MENLO MF, and other advisory clients. Mr. Gibson is a member of the board of directors of the Issuer. Sylebra HK, Sylebra US, Sylebra Cayman and Mr. Gibson disclaim beneficial ownership of these securities, and this report shall not be deemed an admission that Sylebra HK, Sylebra US, Sylebra Cayman and Mr. Gibson are the beneficial owners of such securities, except to the extent of their pecuniary interest, if any, therein.

SEC source: 0002003074-26-000003 · primary_doc.xml · nonDerivative · entry 1

SYLEBRA CAPITAL LLC · CIK 0002003074 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote (1) (2)

Disclosed balance after: 1,095,981

F1 · ownership.nature: (1) Sylebra Capital LLC (Sylebra US) and Sylebra Capital Limited (Sylebra HK) are the investment sub-advisers to Sylebra Capital Partners Master Fund, Ltd. (SCPMF), Sylebra Capital Menlo Master Fund (MENLO MF), and other advisory clients. Sylebra Capital Management (Sylebra Cayman) is the investment manager and parent of Sylebra HK. Sylebra Cayman owns 100% of the shares of Sylebra HK and Daniel Patrick Gibson (Gibson) owns more than 100% of the Class A shares of Sylebra Cayman and 100% of the share capital of Sylebra US. Gibson is a founder and Chief Investment Officer of Sylebra Cayman. In such capacities, Sylebra US, Sylebra HK, Sylebra Cayman and Gibson may be deemed to share voting and dispositive power over the shares of common stock of the Issuer held by SCP MF, MENLO MF, and other advisory clients.

F2 · ownership.nature: (2) These securities are held by SCP MF, MENLO MF, and other advisory clients. Gibson is a member of the board of directors of the Issuer. Sylebra US, Sylebra HK, Sylebra Cayman and Gibson disclaim beneficial ownership of these securities, and this report shall not be deemed an admission that Sylebra US, Sylebra HK, Sylebra Cayman and Gibson are the beneficial owners of such securities, except to the extent of their pecuniary interest, if any, therein.

SEC source: 0001705407-26-000002 · form4-03242026_080311.xml · derivative · entry 8

Baker Cary · CIK 0001705407 · CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,627

Underlying: Common Stock · 7,627 shares

Expires not disclosed

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Impinj common stock.

F6 · derivative.exercise_date: One-fourth of the shares subject to the grant shall vest on March 23, 2027, and 1/16th of the shares subject to the grant shall vest each quarter thereafter, subject to the reporting person's continued service to the Issuer through such date.

F6 · derivative.expiration_date: One-fourth of the shares subject to the grant shall vest on March 23, 2027, and 1/16th of the shares subject to the grant shall vest each quarter thereafter, subject to the reporting person's continued service to the Issuer through such date.

SEC source: 0001705407-26-000002 · form4-03242026_080311.xml · derivative · entry 7

Baker Cary · CIK 0001705407 · CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,773

Underlying: Common Stock · 597 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.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Impinj common stock.

F5 · derivative.exercise_date: On March 23, 2024, the reporting person was granted 9,545 RSUs. One-sixteenth of these vested on March 23, 2026.

F5 · derivative.expiration_date: On March 23, 2024, the reporting person was granted 9,545 RSUs. One-sixteenth of these vested on March 23, 2026.

SEC source: 0001705407-26-000002 · form4-03242026_080311.xml · derivative · entry 6

Baker Cary · CIK 0001705407 · CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,917

Underlying: Common Stock · 479 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.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Impinj common stock.

F4 · derivative.exercise_date: On March 23, 2023, the reporting person was granted 7,665 RSUs. One-sixteenth of these vested on March 23, 2026.

F4 · derivative.expiration_date: On March 23, 2023, the reporting person was granted 7,665 RSUs. One-sixteenth of these vested on March 23, 2026.

SEC source: 0001705407-26-000002 · form4-03242026_080311.xml · derivative · entry 5

Baker Cary · CIK 0001705407 · CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 782 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.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Impinj common stock.

F3 · derivative.exercise_date: On March 23, 2022, the reporting person was granted 12,500 RSUs. One-sixteenth of these vested on March 23, 2026.

F3 · derivative.expiration_date: On March 23, 2022, the reporting person was granted 12,500 RSUs. One-sixteenth of these vested on March 23, 2026.

SEC source: 0001705407-26-000002 · form4-03242026_080311.xml · nonDerivative · entry 4

Baker Cary · CIK 0001705407 · CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,003

F1 · kind: In an exempt disposition to the Issuer under Rule 16b-3(e), the Reporting Person remitted shares to the Issuer in connection with the satisfaction of tax withholding obligations arising out of the vesting of restricted stock units, or RSUs.

SEC source: 0001705407-26-000002 · form4-03242026_080311.xml · nonDerivative · entry 3

Baker Cary · CIK 0001705407 · CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,735

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: 0001705407-26-000002 · form4-03242026_080311.xml · nonDerivative · entry 2

Baker Cary · CIK 0001705407 · CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,138

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: 0001705407-26-000002 · form4-03242026_080311.xml · nonDerivative · entry 1

Baker Cary · CIK 0001705407 · CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 88,659

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: 0001677721-26-000005 · form4-03242026_080342.xml · derivative · entry 9

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,806

Underlying: Common Stock · 24,806 shares

Expires not disclosed

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Impinj common stock.

F6 · derivative.exercise_date: One-fourth of the shares subject to the grant shall vest on March 23, 2027, and 1/16th of the shares subject to the grant shall vest each quarter thereafter, subject to the reporting person's continued service to the Issuer through such date.

F6 · derivative.expiration_date: One-fourth of the shares subject to the grant shall vest on March 23, 2027, and 1/16th of the shares subject to the grant shall vest each quarter thereafter, subject to the reporting person's continued service to the Issuer through such date.

SEC source: 0001677721-26-000005 · form4-03242026_080342.xml · derivative · entry 8

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,538

Underlying: Common Stock · 1,817 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.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Impinj common stock.

F5 · derivative.exercise_date: On March 23, 2024, the reporting person was granted 29,075 RSUs. One-sixteenth of these vested on March 23, 2026.

F5 · derivative.expiration_date: On March 23, 2024, the reporting person was granted 29,075 RSUs. One-sixteenth of these vested on March 23, 2026.

SEC source: 0001677721-26-000005 · form4-03242026_080342.xml · derivative · entry 7

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,895

Underlying: Common Stock · 1,224 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.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Impinj common stock.

F4 · derivative.exercise_date: On March 23, 2023, the reporting person was granted 19,580 RSUs. One-sixteenth of these vested on March 23, 2026.

F4 · derivative.expiration_date: On March 23, 2023, the reporting person was granted 19,580 RSUs. One-sixteenth of these vested on March 23, 2026.

SEC source: 0001677721-26-000005 · form4-03242026_080342.xml · derivative · entry 6

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,594 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.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Impinj common stock.

F3 · derivative.exercise_date: On March 23, 2022, the reporting person was granted 41,500 RSUs. One-sixteenth of these vested on March 23, 2026.

F3 · derivative.expiration_date: On March 23, 2022, the reporting person was granted 41,500 RSUs. One-sixteenth of these vested on March 23, 2026.

SEC source: 0001677721-26-000005 · form4-03242026_080342.xml · nonDerivative · entry 4

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 390,302

F1 · kind: In an exempt disposition to the Issuer under Rule 16b-3(e), the Reporting Person remitted shares to the Issuer in connection with the satisfaction of tax withholding obligations arising out of the vesting of restricted stock units, or RSUs.

SEC source: 0001677721-26-000005 · form4-03242026_080342.xml · nonDerivative · entry 3

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 392,520

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: 0001677721-26-000005 · form4-03242026_080342.xml · nonDerivative · entry 2

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 390,703

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: 0001677721-26-000005 · form4-03242026_080342.xml · nonDerivative · entry 1

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 389,479

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: 0001705407-26-000001 · form4-02232026_090223.xml · nonDerivative · entry 2

Baker Cary · CIK 0001705407 · CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 87,877

F2 · kind: In an exempt disposition to the Issuer under Rule 16b-3(e), the Reporting Person remitted shares to the Issuer in connection with the satisfaction of tax withholding obligations arising out of the vesting of the PSUs.

SEC source: 0001705407-26-000001 · form4-02232026_090223.xml · nonDerivative · entry 1

Baker Cary · CIK 0001705407 · CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 90,111

F1 · shares: On March 23, 2023, the Reporting Person was granted performance restricted stock units (PSUs). The PSUs vested upon the Reporting Person's satisfaction of certain performance criteria. On February 18, 2026, the Issuer's Board of Directors determined the level at which the corporate performance goals were attained, resulting in the vesting of 8,508 shares of Common Stock underlying the PSUs.

SEC source: 0001677721-26-000004 · form4-02232026_090258.xml · nonDerivative · entry 2

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 386,885

F2 · kind: In an exempt disposition to the Issuer under Rule 16b-3(e), the Reporting Person remitted shares to the Issuer in connection with the satisfaction of tax withholding obligations arising out of the vesting of the PSUs.

SEC source: 0001677721-26-000004 · form4-02232026_090258.xml · nonDerivative · entry 1

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 394,320

F1 · shares: On March 23, 2023, the Reporting Person was granted performance restricted stock units (PSUs). The PSUs vested upon the Reporting Person's satisfaction of certain performance criteria. On February 18, 2026, the Issuer's Board of Directors determined the level at which the corporate performance goals were attained, resulting in the vesting of 21,734 shares of Common Stock underlying the PSUs.

SEC source: 0001677721-26-000002 · form4-02192026_090257.xml · nonDerivative · entry 1

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 372,586

SEC source: 0001677721-25-000009 · form4-12232025_111256.xml · derivative · entry 8

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,355

Underlying: Common Stock · 1,817 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.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Impinj common stock.

F5 · derivative.exercise_date: On March 23, 2024, the reporting person was granted 29,075 RSUs. One-sixteenth of these vested on December 23, 2025.

F5 · derivative.expiration_date: On March 23, 2024, the reporting person was granted 29,075 RSUs. One-sixteenth of these vested on December 23, 2025.

SEC source: 0001677721-25-000009 · form4-12232025_111256.xml · derivative · entry 7

DIORIO CHRIS PH.D. · CIK 0001677721 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,119

Underlying: Common Stock · 1,224 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.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Impinj common stock.

F4 · derivative.exercise_date: On March 23, 2023, the reporting person was granted 19,580 RSUs. One-sixteenth of these vested on December 23, 2025.

F4 · derivative.expiration_date: On March 23, 2023, the reporting person was granted 19,580 RSUs. One-sixteenth of these vested on December 23, 2025.