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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."}],"balance_after":795048,"source":{"system":"sec-edgar","filing":"0002003074-26-000013","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000013/primary_doc.xml","form_type":"4/A","original_submission_date":"2026-06-10"}},{"id":743543,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-10T21:31:11.000Z","date":"2026-06-08","kind":"sale","planned":false,"acquired":false,"shares":12528,"price":125.9651,"value":1578090.7728,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":828048,"source":{"system":"sec-edgar","filing":"0002003074-26-000013","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000013/primary_doc.xml","form_type":"4/A","original_submission_date":"2026-06-10"}},{"id":743542,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-10T21:17:08.000Z","date":"2026-06-09","kind":"sale","planned":false,"acquired":false,"shares":12105,"price":127.3577,"value":1541664.9585,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"balance_after":782943,"source":{"system":"sec-edgar","filing":"0002003074-26-000012","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000012/primary_doc.xml","form_type":"4"}},{"id":743541,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-10T21:17:08.000Z","date":"2026-06-08","kind":"sale","planned":false,"acquired":false,"shares":33000,"price":130.0685,"value":4292260.5,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":795048,"source":{"system":"sec-edgar","filing":"0002003074-26-000012","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000012/primary_doc.xml","form_type":"4"}},{"id":743540,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-10T21:17:08.000Z","date":"2026-06-08","kind":"sale","planned":false,"acquired":false,"shares":12528,"price":125.9651,"value":1578090.7728,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"balance_after":828048,"source":{"system":"sec-edgar","filing":"0002003074-26-000012","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000012/primary_doc.xml","form_type":"4"}},{"id":745094,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-09T22:29:09.000Z","date":"2026-06-05","kind":"sale","planned":false,"acquired":false,"shares":35877,"price":122.5003,"value":4394943.2631,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":840576,"source":{"system":"sec-edgar","filing":"0002003074-26-000011","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000011/primary_doc.xml","form_type":"4"}},{"id":745093,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-09T22:29:09.000Z","date":"2026-06-05","kind":"sale","planned":false,"acquired":false,"shares":11602,"price":128.8684,"value":1495131.1768,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":876453,"source":{"system":"sec-edgar","filing":"0002003074-26-000011","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000011/primary_doc.xml","form_type":"4"}},{"id":745091,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":20973,"kind":"person","name":"DIORIO CHRIS PH.D.","position":1,"cik":"0001677721","reported_name":"DIORIO CHRIS PH.D.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-06-09T21:00:19.000Z","date":"2026-05-26","kind":"other","planned":true,"acquired":false,"shares":180000,"price":156.675,"value":28201500.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The exchange of shares reported by Dr. Diorio was effected pursuant to a Rule 10b5-1 trading plan adopted on February 23, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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."}],"balance_after":390302,"source":{"system":"sec-edgar","filing":"0001677721-26-000006","document":"form4-06092026_050601.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000167772126000006/form4-06092026_050601.xml","form_type":"4"}},{"id":745090,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":20973,"kind":"person","name":"DIORIO CHRIS PH.D.","position":1,"cik":"0001677721","reported_name":"DIORIO CHRIS PH.D.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-06-09T21:00:19.000Z","date":"2026-05-26","kind":"other","planned":true,"acquired":true,"shares":180000,"price":156.675,"value":28201500.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The exchange of shares reported by Dr. Diorio was effected pursuant to a Rule 10b5-1 trading plan adopted on February 23, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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."}],"balance_after":570302,"source":{"system":"sec-edgar","filing":"0001677721-26-000006","document":"form4-06092026_050601.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000167772126000006/form4-06092026_050601.xml","form_type":"4"}},{"id":746673,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-08T21:01:43.000Z","date":"2026-06-04","kind":"sale","planned":false,"acquired":false,"shares":33412,"price":136.8435,"value":4572215.022,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":888055,"source":{"system":"sec-edgar","filing":"0002003074-26-000010","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000010/primary_doc.xml","form_type":"4"}},{"id":749980,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-04T21:04:06.000Z","date":"2026-06-03","kind":"sale","planned":false,"acquired":false,"shares":6313,"price":139.1663,"value":878556.8519,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":921467,"source":{"system":"sec-edgar","filing":"0002003074-26-000009","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000009/primary_doc.xml","form_type":"4"}},{"id":749979,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-04T21:04:06.000Z","date":"2026-06-02","kind":"sale","planned":false,"acquired":false,"shares":38724,"price":142.3145,"value":5510986.698,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":927780,"source":{"system":"sec-edgar","filing":"0002003074-26-000009","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000009/primary_doc.xml","form_type":"4"}},{"id":755489,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-02T22:02:02.000Z","date":"2026-06-01","kind":"sale","planned":false,"acquired":false,"shares":7163,"price":144.2911,"value":1033557.1493,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":966504,"source":{"system":"sec-edgar","filing":"0002003074-26-000008","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000008/primary_doc.xml","form_type":"4"}},{"id":755488,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-02T22:02:02.000Z","date":"2026-05-29","kind":"sale","planned":false,"acquired":false,"shares":48504,"price":150.7755,"value":7313214.852,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":973667,"source":{"system":"sec-edgar","filing":"0002003074-26-000008","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000008/primary_doc.xml","form_type":"4"}},{"id":759107,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":43263,"kind":"person","name":"Gibson Daniel Patrick","position":1,"cik":"0001745725","reported_name":"Gibson Daniel Patrick","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-05-29T21:36:26.000Z","date":"2026-05-28","kind":"grant","planned":false,"acquired":true,"shares":1896,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of Impinj common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted stock units will fully vest on May 28, 2027."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The restricted stock units will fully vest on May 28, 2027."}],"balance_after":1896,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":1896},"source":{"system":"sec-edgar","filing":"0001745725-26-000002","document":"form4-05292026_090520.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000174572526000002/form4-05292026_090520.xml","form_type":"4"}},{"id":759106,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":43263,"kind":"person","name":"Gibson Daniel Patrick","position":1,"cik":"0001745725","reported_name":"Gibson Daniel Patrick","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-05-29T21:36:26.000Z","date":"2026-05-28","kind":"exercise","planned":false,"acquired":false,"shares":3114,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of Impinj common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On June 5, 2025, the reporting person was granted 3,114 RSUs. 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(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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":1022171,"source":{"system":"sec-edgar","filing":"0002003074-26-000005","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000005/primary_doc.xml","form_type":"4/A","original_submission_date":"2026-05-08"}},{"id":783031,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-05-12T22:36:16.000Z","date":"2026-05-11","kind":"sale","planned":false,"acquired":false,"shares":24126,"price":154.46,"value":3726501.96,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":1034877,"source":{"system":"sec-edgar","filing":"0002003074-26-000005","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000005/primary_doc.xml","form_type":"4/A","original_submission_date":"2026-05-08"}},{"id":783030,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-05-12T22:36:16.000Z","date":"2026-05-08","kind":"sale","planned":false,"acquired":false,"shares":9522,"price":149.97,"value":1428014.34,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":1059003,"source":{"system":"sec-edgar","filing":"0002003074-26-000005","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000005/primary_doc.xml","form_type":"4/A","original_submission_date":"2026-05-08"}},{"id":783029,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-05-12T22:36:16.000Z","date":"2026-05-08","kind":"sale","planned":false,"acquired":false,"shares":1560,"price":151.32,"value":236059.2,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":1068525,"source":{"system":"sec-edgar","filing":"0002003074-26-000005","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000005/primary_doc.xml","form_type":"4/A","original_submission_date":"2026-05-08"}},{"id":783028,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-05-12T22:36:16.000Z","date":"2026-05-08","kind":"sale","planned":false,"acquired":false,"shares":25896,"price":152.73,"value":3955096.08,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":1070085,"source":{"system":"sec-edgar","filing":"0002003074-26-000005","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000005/primary_doc.xml","form_type":"4/A","original_submission_date":"2026-05-08"}},{"id":783027,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-05-12T22:27:15.000Z","date":"2026-05-11","kind":"sale","planned":false,"acquired":true,"shares":12706,"price":154.46,"value":1962568.76,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":1022171,"source":{"system":"sec-edgar","filing":"0002003074-26-000004","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000004/primary_doc.xml","form_type":"4"}},{"id":783026,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-05-12T22:27:15.000Z","date":"2026-05-11","kind":"sale","planned":false,"acquired":true,"shares":24126,"price":154.46,"value":3726501.96,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":1034877,"source":{"system":"sec-edgar","filing":"0002003074-26-000004","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000004/primary_doc.xml","form_type":"4"}},{"id":783025,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-05-12T22:27:15.000Z","date":"2026-05-08","kind":"sale","planned":false,"acquired":true,"shares":9522,"price":149.97,"value":1428014.34,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":1059003,"source":{"system":"sec-edgar","filing":"0002003074-26-000004","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000004/primary_doc.xml","form_type":"4"}},{"id":783024,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-05-12T22:27:15.000Z","date":"2026-05-08","kind":"sale","planned":false,"acquired":true,"shares":1560,"price":151.32,"value":236059.2,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":1068525,"source":{"system":"sec-edgar","filing":"0002003074-26-000004","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000004/primary_doc.xml","form_type":"4"}},{"id":783023,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-05-12T22:27:15.000Z","date":"2026-05-08","kind":"sale","planned":false,"acquired":false,"shares":25896,"price":152.73,"value":3955096.08,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":1070085,"source":{"system":"sec-edgar","filing":"0002003074-26-000004","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000004/primary_doc.xml","form_type":"4"}},{"id":785156,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-05-11T23:16:51.000Z","date":"2026-05-07","kind":"sale","planned":false,"acquired":false,"shares":36171,"price":152.73,"value":5524396.83,"ownership":{"direct":false,"nature":"See Footnote (1) (2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":1095981,"source":{"system":"sec-edgar","filing":"0002003074-26-000003","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000003/primary_doc.xml","form_type":"4/A","original_submission_date":"2026-05-11"}},{"id":785157,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":33011,"kind":"person","name":"SYLEBRA CAPITAL LLC","position":1,"cik":"0002003074","reported_name":"SYLEBRA CAPITAL LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-05-11T19:11:24.000Z","date":"2026-05-07","kind":"sale","planned":false,"acquired":false,"shares":36171,"price":152.73,"value":5524396.83,"ownership":{"direct":false,"nature":"See Footnote (1)&(2)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"(1)\tSylebra 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(2)\tThese 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."}],"balance_after":1132152,"source":{"system":"sec-edgar","filing":"0002003074-26-000002","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000200307426000002/primary_doc.xml","form_type":"4"}},{"id":829690,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":20974,"kind":"person","name":"Baker Cary","position":1,"cik":"0001705407","reported_name":"Baker Cary","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Restricted Stock Units","published_at":"2026-03-24T20:34:18.000Z","date":"2026-03-23","kind":"grant","planned":false,"acquired":true,"shares":7627,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of Impinj common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"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."}],"balance_after":7627,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":7627},"source":{"system":"sec-edgar","filing":"0001705407-26-000002","document":"form4-03242026_080311.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000170540726000002/form4-03242026_080311.xml","form_type":"4"}},{"id":829689,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":20974,"kind":"person","name":"Baker Cary","position":1,"cik":"0001705407","reported_name":"Baker Cary","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Restricted Stock Units","published_at":"2026-03-24T20:34:18.000Z","date":"2026-03-23","kind":"exercise","planned":false,"acquired":false,"shares":597,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of Impinj common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On March 23, 2024, the reporting person was granted 9,545 RSUs.  One-sixteenth of these vested on March 23, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On March 23, 2024, the reporting person was granted 9,545 RSUs.  One-sixteenth of these vested on March 23, 2026."}],"balance_after":4773,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":597},"source":{"system":"sec-edgar","filing":"0001705407-26-000002","document":"form4-03242026_080311.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000170540726000002/form4-03242026_080311.xml","form_type":"4"}},{"id":829688,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":20974,"kind":"person","name":"Baker Cary","position":1,"cik":"0001705407","reported_name":"Baker Cary","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Restricted Stock Units","published_at":"2026-03-24T20:34:18.000Z","date":"2026-03-23","kind":"exercise","planned":false,"acquired":false,"shares":479,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of Impinj common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On March 23, 2023, the reporting person was granted 7,665 RSUs. One-sixteenth of these vested on March 23, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On March 23, 2023, the reporting person was granted 7,665 RSUs. One-sixteenth of these vested on March 23, 2026."}],"balance_after":1917,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":479},"source":{"system":"sec-edgar","filing":"0001705407-26-000002","document":"form4-03242026_080311.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000170540726000002/form4-03242026_080311.xml","form_type":"4"}},{"id":829687,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":20974,"kind":"person","name":"Baker Cary","position":1,"cik":"0001705407","reported_name":"Baker Cary","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Restricted Stock Units","published_at":"2026-03-24T20:34:18.000Z","date":"2026-03-23","kind":"exercise","planned":false,"acquired":false,"shares":782,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of Impinj common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On March 23, 2022, the reporting person was granted 12,500 RSUs.  One-sixteenth of these vested on March 23, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On March 23, 2022, the reporting person was granted 12,500 RSUs.  One-sixteenth of these vested on March 23, 2026."}],"balance_after":0,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":782},"source":{"system":"sec-edgar","filing":"0001705407-26-000002","document":"form4-03242026_080311.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000170540726000002/form4-03242026_080311.xml","form_type":"4"}},{"id":829686,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":20974,"kind":"person","name":"Baker Cary","position":1,"cik":"0001705407","reported_name":"Baker Cary","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Common 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One-sixteenth of these vested on March 23, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On March 23, 2024, the reporting person was granted 29,075 RSUs.  One-sixteenth of these vested on March 23, 2026."}],"balance_after":14538,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":1817},"source":{"system":"sec-edgar","filing":"0001677721-26-000005","document":"form4-03242026_080342.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000167772126000005/form4-03242026_080342.xml","form_type":"4"}},{"id":829680,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":20973,"kind":"person","name":"DIORIO CHRIS PH.D.","position":1,"cik":"0001677721","reported_name":"DIORIO CHRIS PH.D.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Restricted Stock Units","published_at":"2026-03-24T20:31:47.000Z","date":"2026-03-23","kind":"exercise","planned":false,"acquired":false,"shares":1224,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of Impinj common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On March 23, 2023, the reporting person was granted 19,580 RSUs.  One-sixteenth of these vested on March 23, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On March 23, 2023, the reporting person was granted 19,580 RSUs.  One-sixteenth of these vested on March 23, 2026."}],"balance_after":4895,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":1224},"source":{"system":"sec-edgar","filing":"0001677721-26-000005","document":"form4-03242026_080342.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1114995/000167772126000005/form4-03242026_080342.xml","form_type":"4"}},{"id":829679,"issuer":{"id":3883,"kind":"organization","name":"IMPINJ INC","symbol":"PI"},"owners":[{"id":20973,"kind":"person","name":"DIORIO CHRIS PH.D.","position":1,"cik":"0001677721","reported_name":"DIORIO CHRIS PH.D.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Restricted Stock Units","published_at":"2026-03-24T20:31:47.000Z","date":"2026-03-23","kind":"exercise","planned":false,"acquired":false,"shares":2594,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of Impinj common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On March 23, 2022, the reporting person was granted 41,500 RSUs. 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