NKTR · Nektar Therapeutics · Shareholders & Ownership

$38.73 +2.09 (+5.70%)

Russell 2000 member Rebalance outlook locked

Market Cap

$1.25B

34.14M

Volume · Oct 20 529.89K Avg daily vol (3M) 1.11M

Every disclosed holder of NKTR in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns NKTR

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

No chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	240	36,107,106	105.75%	Yes
Insiders (Forms 3, 4, 5)	8	153,280	0.45%	Yes
13D/G-only blocks	5	5,813,455	17.03%	Yes
Remaining	—	7,930,847	-23.23%	Negative
Registered funds (N-PORT, not summed)	146	8,340,381	24.43%	No

Shares outstanding: 34,142,994, the issuer's latest cover-page count restated onto today's split basis.

Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of NKTR

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	FMR LLC 13F CIK 315066 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	5,067,920	14.84%	+764,732	Jun 30, 2026	carried, not yet filed for the newest quarter
1.1	Fidelity Growth Company Fund Fund S000007119 · Registered fund · May 31, 2026 Fidelity Mt. Vernon Street Trust, not summed	1,834,001	5.37%	+679,000	May 31, 2026	Fidelity Mt. Vernon Street Trust, not summed
1.2	Fidelity Growth Company K6 Fund Fund S000065696 · Registered fund · May 31, 2026 Fidelity Mt. Vernon Street Trust, not summed	492,779	1.44%	+213,319	May 31, 2026	Fidelity Mt. Vernon Street Trust, not summed
1.3	Fidelity Series Growth Company Fund Fund S000042626 · Registered fund · May 31, 2026 Fidelity Mt. Vernon Street Trust, not summed	419,823	1.23%	+111,209	May 31, 2026	Fidelity Mt. Vernon Street Trust, not summed
1.4	Fidelity Small Cap Index Fund Fund S000033638 · Registered fund · Jul 31, 2026 Fidelity Salem Street Trust, not summed	376,892	1.10%	—	Jul 31, 2026	Fidelity Salem Street Trust, not summed
1.5	Fidelity Extended Market Index Fund Fund S000006021 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	162,987	0.48%	+22,167	May 31, 2026	Fidelity Concord Street Trust, not summed
2	Two Seas Capital LP 13F CIK 1823138 · Registered investment adviser · Sep 30, 2026	3,345,978	9.80%	+253,744	Sep 30, 2026
3	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	2,941,851	8.62%	+2,249,201	Jun 30, 2026	carried, not yet filed for the newest quarter
3.1	BlackRock, Inc. 13G CIK 2012383 · Holding company · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	2,643,796	7.74%	+2,440,779	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
3.2	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	896,117	2.62%	—	Jun 30, 2026	iShares Trust, not summed
3.3	iShares Russell 2000 Growth ETF Fund S000004343 · Registered fund · Jun 30, 2026 iShares Trust, not summed	285,292	0.84%	—	Jun 30, 2026	iShares Trust, not summed
3.4	iShares U.S. Pharmaceuticals ETF Fund S000009417 · Registered fund · Jun 30, 2026 iShares Trust, not summed	87,878	0.26%	+9,674	Jun 30, 2026	iShares Trust, not summed
3.5	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	64,435	0.19%	—	Jun 30, 2026	Quantitative Master Series LLC, not summed
4	BIOTECHNOLOGY VALUE FUND L P 13G CIK 918923 · Unknown · Jun 30, 2026 Rule 13d-1(c), passive investor	2,391,075	7.00%	+1,114,480	Jun 30, 2026	Rule 13d-1(c), passive investor
5	BVF INC/IL 13F CIK 1056807 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	2,391,075	7.00%	-168,520	Jun 30, 2026	carried, not yet filed for the newest quarter
6	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,496,849	4.38%	+299,794	Jun 30, 2026	carried, not yet filed for the newest quarter
6.1	VANGUARD CAPITAL MANAGEMENT LLC 13G CIK 2100119 · Registered investment adviser · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	1,747,653	5.12%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
7	TCG Crossover GP II, LLC 13G CIK 1969280 · Unknown · Mar 6, 2024 Rule 13d-1(c), passive investor	1,336,423	3.91%	—	Mar 6, 2024	Rule 13d-1(c), passive investor
8	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,202,004	3.52%	+271,263	Jun 30, 2026	carried, not yet filed for the newest quarter
9	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	1,075,108	3.15%	+219,508	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
10	Vestal Point Capital, LP 13F CIK 1974915 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,000,000	2.93%	+715,000	Jun 30, 2026	carried, not yet filed for the newest quarter
11	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	936,560	2.74%	+277,173	Jun 30, 2026	carried, not yet filed for the newest quarter
11.1	Inception Portfolio Fund S000002825 · Registered fund · Jun 30, 2026 MORGAN STANLEY INSTITUTIONAL FUND INC, not summed	21,476	0.06%	+12,494	Jun 30, 2026	MORGAN STANLEY INSTITUTIONAL FUND INC, not summed
11.2	Global Endurance Portfolio Fund S000063049 · Registered fund · Jun 30, 2026 MORGAN STANLEY INSTITUTIONAL FUND INC, not summed	5,616	0.02%	—	Jun 30, 2026	MORGAN STANLEY INSTITUTIONAL FUND INC, not summed
11.3	Vitality Portfolio Fund S000074797 · Registered fund · Mar 31, 2026 MORGAN STANLEY INSTITUTIONAL FUND INC, not summed	1,412	0.00%	—	Mar 31, 2026	MORGAN STANLEY INSTITUTIONAL FUND INC, not summed
11.4	E*TRADE No Fee Total Market Index Fund Fund S000090722 · Registered fund · Jul 31, 2026 E Trade Trust, not summed	205	0.00%	—	Jul 31, 2026	E Trade Trust, not summed
12	Millennium Management LLC 13G CIK 1319244 · Unknown · Jun 27, 2025 Rule 13d-1(c), passive investor	932,863	2.73%	—	Jun 27, 2025	Rule 13d-1(c), passive investor
13	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	909,679	2.66%	+664,952	Jun 30, 2026	carried, not yet filed for the newest quarter
13.1	State Street(R) SPDR(R) S&P(R) Pharmaceuticals ETF Fund S000012321 · Registered fund · Jun 30, 2026 SPDR SERIES TRUST, not summed	115,142	0.34%	+34,636	Jun 30, 2026	SPDR SERIES TRUST, not summed
13.2	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	11,300	0.03%	—	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
13.3	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	870	0.00%	—	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
13.4	State Street Balanced Index Fund Fund S000082802 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	160	0.00%	0	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
14	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	881,306	2.58%	+534,511	Jun 30, 2026	carried, not yet filed for the newest quarter
15	Prosight Management, LP 13F CIK 1617201 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	810,000	2.37%	+75,000	Jun 30, 2026	carried, not yet filed for the newest quarter
16	ARMISTICE CAPITAL, LLC 13F CIK 1601086 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	724,000	2.12%	+146,000	Jun 30, 2026	carried, not yet filed for the newest quarter
17	Nantahala Capital Management, LLC 13G CIK 1472322 · Registered investment adviser · Jun 30, 2025 Rule 13d-1(b), qualified institution	709,761	2.08%	—	Jun 30, 2025	Rule 13d-1(b), qualified institution
18	GILDER GAGNON HOWE & CO LLC 13F CIK 902464 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	600,873	1.76%	+329,115	Jun 30, 2026	carried, not yet filed for the newest quarter
19	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	478,120	1.40%	+73,843	Jun 30, 2026	carried, not yet filed for the newest quarter
20	BRAIDWELL LP 13F CIK 1920938 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	473,617	1.39%	+250,916	Jun 30, 2026	carried, not yet filed for the newest quarter
21	Sofinnova Investments, Inc. 13F CIK 1631134 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	471,763	1.38%	-37,783	Jun 30, 2026	carried, not yet filed for the newest quarter
22	Woodline Partners LP 13F CIK 1784547 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	470,875	1.38%	+55,540	Jun 30, 2026	carried, not yet filed for the newest quarter
23	ORBIMED ADVISORS LLC 13F CIK 1055951 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	465,346	1.36%	+190,346	Jun 30, 2026	carried, not yet filed for the newest quarter
24	EVENTIDE ASSET MANAGEMENT, LLC 13G CIK 1442891 · Registered investment adviser · Dec 31, 2024 Rule 13d-1(b), qualified institution	443,333	1.30%	—	Dec 31, 2024	Rule 13d-1(b), qualified institution
25	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	428,400	1.25%	+108,228	Jun 30, 2026	carried, not yet filed for the newest quarter
26	EMERALD ADVISERS, LLC 13F CIK 1015083 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	390,158	1.14%	-4,446	Jun 30, 2026	carried, not yet filed for the newest quarter
27	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	387,571	1.14%	+74,766	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
28	LORD, ABBETT & CO. LLC 13F CIK 728100 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	381,624	1.12%	-23,456	Jun 30, 2026	carried, not yet filed for the newest quarter
28.1	Lord Abbett Micro-Cap Growth Fund Fund S000007142 · Registered fund · Jul 31, 2026 LORD ABBETT SECURITIES TRUST, not summed	33,756	0.10%	-8,675	Jul 31, 2026	LORD ABBETT SECURITIES TRUST, not summed
28.2	Developing Growth Portfolio Fund S000028719 · Registered fund · Jun 30, 2026 LORD ABBETT SERIES FUND INC, not summed	5,204	0.02%	-451	Jun 30, 2026	LORD ABBETT SERIES FUND INC, not summed
29	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	348,540	1.02%	+276,049	Jun 30, 2026	carried, not yet filed for the newest quarter
30	DAFNA Capital Management LLC 13F CIK 1389933 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	318,380	0.93%	+153,202	Jun 30, 2026	carried, not yet filed for the newest quarter
31	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	308,531	0.90%	+229,933	Jun 30, 2026	carried, not yet filed for the newest quarter
31.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	17,422	0.05%	—	Jun 30, 2026	Northern Funds, not summed
31.2	Small Cap Core Fund Fund S000001244 · Registered fund · Jun 30, 2026 Northern Funds, not summed	3,246	0.01%	—	Jun 30, 2026	Northern Funds, not summed
31.3	FlexShares Morningstar US Market Factor Tilt Index Fund Fund S000033312 · Registered fund · Jul 31, 2026 FlexShares Trust, not summed	810	0.00%	+40	Jul 31, 2026	FlexShares Trust, not summed
32	Deep Track Capital, LP 13F CIK 1856083 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	300,000	0.88%	+300,000	Jun 30, 2026	carried, not yet filed for the newest quarter
33	CHARLES SCHWAB INVESTMENT MANAGEMENT INC 13F CIK 884546 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	284,971	0.83%	+116,964	Jun 30, 2026	carried, not yet filed for the newest quarter
33.1	Schwab U.S. Small-Cap ETF Fund S000026636 · Registered fund · May 31, 2026 SCHWAB STRATEGIC TRUST, not summed	151,830	0.44%	+21,030	May 31, 2026	SCHWAB STRATEGIC TRUST, not summed
33.2	Schwab Small-Cap Index Fund Fund S000005912 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	83,706	0.25%	—	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
33.3	Schwab Total Stock Market Index Fund Fund S000005913 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	23,395	0.07%	+4,832	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
33.4	Schwab U.S. Broad Market ETF Fund S000026631 · Registered fund · May 31, 2026 SCHWAB STRATEGIC TRUST, not summed	18,540	0.05%	+2,892	May 31, 2026	SCHWAB STRATEGIC TRUST, not summed
34	22NW, LP 13F CIK 1694297 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	281,115	0.82%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
35	SUSQUEHANNA INTERNATIONAL GROUP, LLP 13F CIK 1446194 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	278,977	0.82%	+29,887	Jun 30, 2026	carried, not yet filed for the newest quarter
36	PRIMECAP MANAGEMENT CO/CA/ 13F CIK 763212 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	272,850	0.80%	-6,300	Jun 30, 2026	carried, not yet filed for the newest quarter
36.1	PRIMECAP Odyssey Aggressive Growth Fund Fund S000005541 · Registered fund · Jul 31, 2026 PRIMECAP Odyssey Funds, not summed	172,419	0.51%	-6,000	Jul 31, 2026	PRIMECAP Odyssey Funds, not summed
36.2	PRIMECAP Odyssey Growth Fund Fund S000005540 · Registered fund · Jul 31, 2026 PRIMECAP Odyssey Funds, not summed	67,615	0.20%	-300	Jul 31, 2026	PRIMECAP Odyssey Funds, not summed
37	BARCLAYS PLC 13F CIK 312069 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	262,362	0.77%	+230,006	Jun 30, 2026	carried, not yet filed for the newest quarter
38	Nearwater Capital Markets, Ltd 13F CIK 1915842 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	261,500	0.77%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
39	EMERALD MUTUAL FUND ADVISERS TRUST 13F CIK 1352895 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	255,587	0.75%	-519	Jun 30, 2026	carried, not yet filed for the newest quarter
39.1	Emerald Growth Fund Fund S000036390 · Registered fund · Apr 30, 2026 FINANCIAL INVESTORS TRUST, not summed	104,721	0.31%	0	Apr 30, 2026	FINANCIAL INVESTORS TRUST, not summed
40	ADAR1 Capital Management, LLC 13F CIK 1940272 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	244,184	0.72%	+82,932	Jun 30, 2026	carried, not yet filed for the newest quarter
41	Creek Drive Management Group LLC 13F CIK 2111824 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	243,000	0.71%	+116,600	Jun 30, 2026	carried, not yet filed for the newest quarter
42	SEVEN GRAND MANAGERS, LLC 13F CIK 1909126 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	240,000	0.70%	+115,000	Jun 30, 2026	carried, not yet filed for the newest quarter
43	DEUTSCHE BANK AG\ 13F CIK 948046 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	239,831	0.70%	+148,160	Jun 30, 2026	carried, not yet filed for the newest quarter
43.1	DWS Small Cap Index VIP Fund S000006223 · Registered fund · Jun 30, 2026 DEUTSCHE DWS INVESTMENTS VIT FUNDS, not summed	5,335	0.02%	—	Jun 30, 2026	DEUTSCHE DWS INVESTMENTS VIT FUNDS, not summed
44	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	239,575	0.70%	+70,267	Jun 30, 2026	carried, not yet filed for the newest quarter
45	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	228,490	0.67%	+101,548	Jun 30, 2026	carried, not yet filed for the newest quarter
45.1	Goldman Sachs Small Cap Equity Insights Fund Fund S000009329 · Registered fund · Jul 31, 2026 Goldman Sachs Trust, not summed	16,772	0.05%	—	Jul 31, 2026	Goldman Sachs Trust, not summed
45.2	Goldman Sachs Small Cap Growth Insights Fund Fund S000014930 · Registered fund · Jul 31, 2026 Goldman Sachs Trust, not summed	9,857	0.03%	—	Jul 31, 2026	Goldman Sachs Trust, not summed
45.3	Goldman Sachs Variable Insurance Trust Small Cap Equity Insights Fund Fund S000009355 · Registered fund · Jun 30, 2026 Goldman Sachs Variable Insurance Trust, not summed	4,186	0.01%	—	Jun 30, 2026	Goldman Sachs Variable Insurance Trust, not summed
45.4	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Jun 30, 2026 GOLDMAN SACHS TRUST, not summed	329	0.00%	+5	Jun 30, 2026	GOLDMAN SACHS TRUST, not summed
46	NORGES BANK 13F CIK 1374170 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	215,300	0.63%	—	Jun 30, 2026	carried, not yet filed for the newest quarter
47	Bronte Capital Management Pty Ltd. 13F CIK 1471085 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	198,434	0.58%	+178	Jun 30, 2026	carried, not yet filed for the newest quarter
48	GREAT POINT PARTNERS LLC 13F CIK 1281446 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	175,000	0.51%	-141,453	Jun 30, 2026	carried, not yet filed for the newest quarter
49	AMERIPRISE FINANCIAL INC 13F CIK 820027 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	165,941	0.49%	+29,211	Jun 30, 2026	carried, not yet filed for the newest quarter
49.1	Columbia Research Enhanced Small Cap ETF Fund S000095313 · Registered fund · Jun 30, 2026 Columbia ETF Trust I, not summed	56	0.00%	—	Jun 30, 2026	Columbia ETF Trust I, not summed
50	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	159,747	0.47%	-353,784	Jun 30, 2026	carried, not yet filed for the newest quarter

26 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 310 holders

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Key facts CIK 906709 CUSIP 640268306 13F (30d) 13 filings 13 filers Visit website Investor relations