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The price reported above reflects the weighted average sale price.  The reporting person hereby undertakes to provide full information regarding the number of shares and the prices at which the transactions were effected upon request to the SEC staff, the issuer, or a security holder of the issuer."}],"balance_after":23450,"source":{"system":"sec-edgar","filing":"0001209191-17-026605","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906709/000120919117026605/doc4.xml","form_type":"4"}},{"id":4428817,"issuer":{"id":4364,"kind":"organization","name":"NEKTAR THERAPEUTICS","symbol":"NKTR"},"owners":[{"id":146445,"kind":"person","name":"Lingnau Lutz","position":1,"cik":"0001354179","reported_name":"Lingnau Lutz","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option","published_at":"2017-02-23T23:32:35.000Z","date":"2017-02-21","kind":"exercise","acquired":false,"shares":30000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan."}],"balance_after":0,"derivative":{"exercise_price":5.14,"exercise_date":"2012-09-30","expiration_date":"2019-09-12","underlying":"Common Stock","underlying_shares":30000},"source":{"system":"sec-edgar","filing":"0001209191-17-014007","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/906709/000120919117014007/doc4.xml","form_type":"4"}},{"id":4428816,"issuer":{"id":4364,"kind":"organization","name":"NEKTAR THERAPEUTICS","symbol":"NKTR"},"owners":[{"id":146445,"kind":"person","name":"Lingnau Lutz","position":1,"cik":"0001354179","reported_name":"Lingnau Lutz","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-02-23T23:32:35.000Z","date":"2017-02-21","kind":"sale","acquired":false,"shares":30000,"price":13.08,"value":392400.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $12.99 to $13.18.  The price reported above reflects the weighted average sale price.  The reporting person hereby undertakes to provide full information regarding the number of shares and the prices at which the transactions were effected upon request to the SEC staff, the issuer, or a security holder of the issuer."}],"balance_after":30450,"source":{"system":"sec-edgar","filing":"0001209191-17-014007","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/906709/000120919117014007/doc4.xml","form_type":"4"}},{"id":4428815,"issuer":{"id":4364,"kind":"organization","name":"NEKTAR THERAPEUTICS","symbol":"NKTR"},"owners":[{"id":146445,"kind":"person","name":"Lingnau Lutz","position":1,"cik":"0001354179","reported_name":"Lingnau Lutz","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-02-23T23:32:35.000Z","date":"2017-02-21","kind":"exercise","acquired":true,"shares":30000,"price":5.14,"value":154200.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan."}],"balance_after":60450,"source":{"system":"sec-edgar","filing":"0001209191-17-014007","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906709/000120919117014007/doc4.xml","form_type":"4"}},{"id":4596617,"issuer":{"id":4364,"kind":"organization","name":"NEKTAR THERAPEUTICS","symbol":"NKTR"},"owners":[{"id":146445,"kind":"person","name":"Lingnau Lutz","position":1,"cik":"0001354179","reported_name":"Lingnau Lutz","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option","published_at":"2016-09-23T21:12:41.000Z","date":"2016-09-21","kind":"grant","acquired":true,"shares":20000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This option vests in equal monthly installments over the one-year period beginning on September 30, 2016."}],"balance_after":20000,"derivative":{"exercise_price":19.15,"expiration_date":"2024-09-20","underlying":"Common Stock","underlying_shares":20000},"source":{"system":"sec-edgar","filing":"0001209191-16-142668","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/906709/000120919116142668/doc4.xml","form_type":"4"}},{"id":4596616,"issuer":{"id":4364,"kind":"organization","name":"NEKTAR THERAPEUTICS","symbol":"NKTR"},"owners":[{"id":146445,"kind":"person","name":"Lingnau Lutz","position":1,"cik":"0001354179","reported_name":"Lingnau Lutz","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2016-09-23T21:12:41.000Z","date":"2016-09-21","kind":"grant","acquired":true,"shares":8000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"This stock award was acquired pursuant to a grant of restricted stock units (\"RSUs\").  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