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The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"A portion of these shares is subject to vesting."}],"balance_after":993,"source":{"system":"sec-edgar","filing":"0001321732-20-000135","document":"wf-form4_160272277903222.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173220000135/wf-form4_160272277903222.xml","form_type":"4"}},{"id":3006996,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-10-15T00:46:34.000Z","date":"2020-10-09","kind":"sale","acquired":false,"shares":62,"price":213.88,"value":13260.56,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"This transaction was executed in multiple trades at prices ranging from $213.41 to $214.22. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"A portion of these shares is subject to vesting."}],"balance_after":1045,"source":{"system":"sec-edgar","filing":"0001321732-20-000135","document":"wf-form4_160272277903222.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173220000135/wf-form4_160272277903222.xml","form_type":"4"}},{"id":3006995,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-10-15T00:46:34.000Z","date":"2020-10-09","kind":"sale","acquired":false,"shares":50,"price":212.82,"value":10641.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"This transaction was executed in multiple trades at prices ranging from $212.38 to $213.21. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"A portion of these shares is subject to vesting."}],"balance_after":1107,"source":{"system":"sec-edgar","filing":"0001321732-20-000135","document":"wf-form4_160272277903222.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173220000135/wf-form4_160272277903222.xml","form_type":"4"}},{"id":3006994,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-10-15T00:46:34.000Z","date":"2020-10-09","kind":"sale","acquired":false,"shares":24,"price":211.76,"value":5082.24,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"This transaction was executed in multiple trades at prices ranging from $211.29 to $212.21. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"A portion of these shares is subject to vesting."}],"balance_after":1157,"source":{"system":"sec-edgar","filing":"0001321732-20-000135","document":"wf-form4_160272277903222.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173220000135/wf-form4_160272277903222.xml","form_type":"4"}},{"id":3006993,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-10-15T00:46:34.000Z","date":"2020-10-09","kind":"sale","acquired":false,"shares":46,"price":210.76,"value":9694.96,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"This transaction was executed in multiple trades at prices ranging from $210.25 to $211.22. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"A portion of these shares is subject to vesting."}],"balance_after":1181,"source":{"system":"sec-edgar","filing":"0001321732-20-000135","document":"wf-form4_160272277903222.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173220000135/wf-form4_160272277903222.xml","form_type":"4"}},{"id":3006992,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-10-15T00:46:34.000Z","date":"2020-10-09","kind":"sale","acquired":false,"shares":121,"price":209.8,"value":25385.8,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"This transaction was executed in multiple trades at prices ranging from $209.27 to $210.23. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"A portion of these shares is subject to vesting."}],"balance_after":1227,"source":{"system":"sec-edgar","filing":"0001321732-20-000135","document":"wf-form4_160272277903222.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173220000135/wf-form4_160272277903222.xml","form_type":"4"}},{"id":3006991,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-10-15T00:46:34.000Z","date":"2020-10-09","kind":"sale","acquired":false,"shares":89,"price":208.74,"value":18577.86,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This transaction was executed in multiple trades at prices ranging from $208.34 to $209.21. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"A portion of these shares is subject to vesting."}],"balance_after":1348,"source":{"system":"sec-edgar","filing":"0001321732-20-000135","document":"wf-form4_160272277903222.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173220000135/wf-form4_160272277903222.xml","form_type":"4"}},{"id":3006990,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-10-15T00:46:34.000Z","date":"2020-10-09","kind":"sale","acquired":false,"shares":128,"price":207.71,"value":26586.88,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $207.25 to $208.23. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"A portion of these shares is subject to vesting."}],"balance_after":1437,"source":{"system":"sec-edgar","filing":"0001321732-20-000135","document":"wf-form4_160272277903222.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173220000135/wf-form4_160272277903222.xml","form_type":"4"}},{"id":3006989,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-10-15T00:46:34.000Z","date":"2020-10-09","kind":"sale","acquired":false,"shares":140,"price":206.88,"value":28963.2,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $206.24 to $207.22. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"A portion of these shares is subject to vesting."}],"balance_after":1565,"source":{"system":"sec-edgar","filing":"0001321732-20-000135","document":"wf-form4_160272277903222.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173220000135/wf-form4_160272277903222.xml","form_type":"4"}},{"id":3245924,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-02-27T01:06:36.000Z","date":"2020-02-24","kind":"sale","acquired":false,"shares":178,"price":186.66,"value":33225.48,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $186.29 to $186.74. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"A portion of these shares is subject to vesting."}],"balance_after":1705,"source":{"system":"sec-edgar","filing":"0001321732-20-000049","document":"wf-form4_158276557938855.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173220000049/wf-form4_158276557938855.xml","form_type":"4"}},{"id":3245923,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-02-27T01:06:36.000Z","date":"2020-02-24","kind":"sale","acquired":false,"shares":126,"price":185.79,"value":23409.54,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $185.16 to $186.00. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"A portion of these shares is subject to vesting."}],"balance_after":1883,"source":{"system":"sec-edgar","filing":"0001321732-20-000049","document":"wf-form4_158276557938855.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173220000049/wf-form4_158276557938855.xml","form_type":"4"}},{"id":3273536,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-02-14T01:20:20.000Z","date":"2020-02-11","kind":"grant","acquired":true,"shares":756,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Restricted stock units vest as to 1/4 on each of March 31, 2020, June 30, 2020, September 30, 2020, and December 31, 2020, subject to Mr. Kassing's continued service as director through such dates."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"A portion of these shares is subject to vesting."}],"balance_after":2009,"source":{"system":"sec-edgar","filing":"0001321732-20-000023","document":"wf-form4_158164320196597.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173220000023/wf-form4_158164320196597.xml","form_type":"4"}},{"id":3392762,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-10-17T00:02:58.000Z","date":"2019-10-14","kind":"sale","acquired":false,"shares":4,"price":145.59,"value":582.36,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."}],"balance_after":1253,"source":{"system":"sec-edgar","filing":"0001321732-19-000125","document":"wf-form4_157127055096849.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173219000125/wf-form4_157127055096849.xml","form_type":"4"}},{"id":3392761,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-10-17T00:02:58.000Z","date":"2019-10-14","kind":"sale","acquired":false,"shares":269,"price":144.84,"value":38961.96,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $144.61 to $145.00. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":1257,"source":{"system":"sec-edgar","filing":"0001321732-19-000125","document":"wf-form4_157127055096849.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173219000125/wf-form4_157127055096849.xml","form_type":"4"}},{"id":3392760,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-10-17T00:02:58.000Z","date":"2019-10-14","kind":"sale","acquired":false,"shares":800,"price":144.12,"value":115296.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $143.89 to $144.45. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":1526,"source":{"system":"sec-edgar","filing":"0001321732-19-000125","document":"wf-form4_157127055096849.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173219000125/wf-form4_157127055096849.xml","form_type":"4"}},{"id":3392759,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-10-17T00:02:58.000Z","date":"2019-10-14","kind":"sale","acquired":false,"shares":200,"price":142.96,"value":28592.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $142.51 to $143.41. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":2326,"source":{"system":"sec-edgar","filing":"0001321732-19-000125","document":"wf-form4_157127055096849.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173219000125/wf-form4_157127055096849.xml","form_type":"4"}},{"id":3662619,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-02-12T23:28:52.000Z","date":"2019-02-08","kind":"grant","acquired":true,"shares":949,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Restricted stock units vest as to 1/4 on each of March 31, 2019, June 30, 2019, September 30, 2019, and December 31, 2019, subject to Mr. Kassing's continued service as director through such dates."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"A portion of these shares is subject to vesting."}],"balance_after":2526,"source":{"system":"sec-edgar","filing":"0001321732-19-000021","document":"wf-form4_155001411842684.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173219000021/wf-form4_155001411842684.xml","form_type":"4"}},{"id":3681073,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-02-01T00:44:03.000Z","date":"2019-01-29","kind":"sale","acquired":false,"shares":100,"price":137.34,"value":13734.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."}],"balance_after":1577,"source":{"system":"sec-edgar","filing":"0001321732-19-000017","document":"wf-form4_154898182749436.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173219000017/wf-form4_154898182749436.xml","form_type":"4"}},{"id":3681072,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-02-01T00:44:03.000Z","date":"2019-01-29","kind":"sale","acquired":false,"shares":810,"price":136.85,"value":110848.5,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $136.38 to $137.24. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":1677,"source":{"system":"sec-edgar","filing":"0001321732-19-000017","document":"wf-form4_154898182749436.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173219000017/wf-form4_154898182749436.xml","form_type":"4"}},{"id":3681071,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-02-01T00:44:03.000Z","date":"2019-01-29","kind":"sale","acquired":false,"shares":176,"price":135.59,"value":23863.84,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $135.33 to $136.00. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":2487,"source":{"system":"sec-edgar","filing":"0001321732-19-000017","document":"wf-form4_154898182749436.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173219000017/wf-form4_154898182749436.xml","form_type":"4"}},{"id":4043730,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-02-22T00:38:47.000Z","date":"2018-02-16","kind":"grant","acquired":true,"shares":1215,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Restricted stock units vest as to 1/4 on each of March 31, 2018, June 30, 2018, September 30, 2018 and December 31, 2018, subject to Mr. Kassing's continued service as a director through such dates."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"A portion of these shares is subject to vesting."}],"balance_after":2663,"source":{"system":"sec-edgar","filing":"0001321732-18-000029","document":"wf-form4_151925991086811.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173218000029/wf-form4_151925991086811.xml","form_type":"4"}},{"id":4083370,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-02-01T02:02:39.000Z","date":"2018-01-29","kind":"sale","acquired":false,"shares":1200,"price":101.18,"value":121416.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $100.95 to $101.80. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":1448,"source":{"system":"sec-edgar","filing":"0001321732-18-000014","document":"wf-form4_151745054469344.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173218000014/wf-form4_151745054469344.xml","form_type":"4"}},{"id":4083369,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-02-01T02:02:39.000Z","date":"2018-01-29","kind":"sale","acquired":false,"shares":800,"price":100.57,"value":80456.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $99.95 to $100.85. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":2648,"source":{"system":"sec-edgar","filing":"0001321732-18-000014","document":"wf-form4_151745054469344.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173218000014/wf-form4_151745054469344.xml","form_type":"4"}},{"id":4349466,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-04-19T23:25:55.000Z","date":"2017-04-17","kind":"grant","acquired":true,"shares":1448,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Restricted stock units vest as to 1/4 on each of April 17, 2017, June 30, 2017, September 30, 2017 and December 31, 2017, subject to Mr. Kassing's continued service as a director through such dates."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"A portion of these shares is subject to vesting."}],"balance_after":3448,"source":{"system":"sec-edgar","filing":"0001321732-17-000093","document":"wf-form4_149264434035783.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173217000093/wf-form4_149264434035783.xml","form_type":"4"}},{"id":4478948,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-01-28T01:24:17.000Z","date":"2017-01-26","kind":"sale","acquired":false,"shares":100,"price":75,"value":7500.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Shares are held by The Kassing Family Trust."}],"balance_after":8500,"source":{"system":"sec-edgar","filing":"0001321732-17-000010","document":"wf-form4_148556664436395.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173217000010/wf-form4_148556664436395.xml","form_type":"4"}},{"id":4478947,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-01-28T01:24:17.000Z","date":"2017-01-26","kind":"sale","acquired":false,"shares":100,"price":74.05,"value":7405.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Shares are held by The Kassing Family Trust."}],"balance_after":8600,"source":{"system":"sec-edgar","filing":"0001321732-17-000010","document":"wf-form4_148556664436395.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173217000010/wf-form4_148556664436395.xml","form_type":"4"}},{"id":4478946,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-01-28T01:24:17.000Z","date":"2017-01-26","kind":"sale","acquired":false,"shares":800,"price":72.8,"value":58240.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $72.45 to $73.25. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Shares are held by The Kassing Family Trust."}],"balance_after":8700,"source":{"system":"sec-edgar","filing":"0001321732-17-000010","document":"wf-form4_148556664436395.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173217000010/wf-form4_148556664436395.xml","form_type":"4"}},{"id":4478945,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-01-28T01:24:17.000Z","date":"2017-01-25","kind":"sale","acquired":false,"shares":666,"price":75.65,"value":50382.9,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $75.50 to $75.85. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":2000,"source":{"system":"sec-edgar","filing":"0001321732-17-000010","document":"wf-form4_148556664436395.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173217000010/wf-form4_148556664436395.xml","form_type":"4"}},{"id":4478944,"issuer":{"id":3430,"kind":"organization","name":"Penumbra Inc","symbol":"PEN"},"owners":[{"id":83040,"kind":"person","name":"Kassing Don W.","position":1,"cik":"0001651324","reported_name":"Kassing Don W.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-01-28T01:24:17.000Z","date":"2017-01-25","kind":"sale","acquired":false,"shares":1334,"price":74.95,"value":99983.3,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $74.75 to $75.30. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":2666,"source":{"system":"sec-edgar","filing":"0001321732-17-000010","document":"wf-form4_148556664436395.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1321732/000132173217000010/wf-form4_148556664436395.xml","form_type":"4"}}]}