v3.19.3
Cover
Oct. 15, 2019
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Oct. 15, 2019
Entity File Number 0-24006
Entity Registrant Name NEKTAR THERAPEUTICS
Entity Central Index Key 0000906709
Entity Tax Identification Number 94-3134940
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 455 Mission Bay Boulevard South
Entity Address, City or Town San Francisco
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94158
City Area Code (415)
Local Phone Number 482-5300
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, $0.0001 par value
Trading Symbol NKTR
Security Exchange Name NASDAQ
Entity Emerging Growth Company false