Public ownership evidence

Nektar Therapeutics (NKTR) Ownership Disclosures

Read NKTR insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

Nektar Therapeutics: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-09-26
Trade date
2026-09-23
Reporting owners
WHITFIELD ROY A
Code
A
Shares
2,000
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0001193125-26-403105
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read NKTR fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read NKTR fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete recent form 4 activity

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2026-09-262026-09-23WHITFIELD ROY AA2,000Not reported
2026-09-262026-09-23WHITFIELD ROY AA4,000Not reported
2026-09-262026-09-23GREER R SCOTTA2,000Not reported
2026-09-262026-09-23GREER R SCOTTA4,000Not reported
2026-09-262026-09-23CHESS ROBERTA4,000Not reported
2026-09-262026-09-23CHESS ROBERTA2,000Not reported
2026-09-262026-09-23Brainard DianaA2,000Not reported
2026-09-262026-09-23Brainard DianaA4,000Not reported
2026-09-262026-09-23Ajer Jeffrey RobertA2,000Not reported
2026-09-262026-09-23Ajer Jeffrey RobertA4,000Not reported
2026-08-212026-08-18Zalevsky JonathanS186Not reported
2026-08-212026-08-18ROBIN HOWARD WS418Not reported
2026-07-252026-07-24Zalevsky JonathanA16,500Not reported
2026-07-252026-07-24ROBIN HOWARD WA57,200Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2534,820$2,430,784None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-252,430,784$34,820,000None
Kimelman & Baird, LLC2026-06-302026-08-1913$908None
Empowered Funds, LLC2026-06-302026-08-1823,441$1,636,416None
Stonepine Capital Management, LLC2026-06-302026-08-18120,654$8,422,856None
CAPSTONE INVESTMENT ADVISORS, LLC2026-06-302026-08-186,902$481,829None
Jefferies Financial Group Inc.2026-06-302026-08-1838,165$2,664,299None
Ishara Investments LP2026-06-302026-08-1526,650$1,860,437None
AMERIFLEX GROUP, INC.2026-06-302026-08-1513$908None
SummitTX Capital, L.P.2026-06-302026-08-15112,934$7,883,923None
SEI INVESTMENTS CO2026-06-302026-08-155,316$371,110None
Aster Capital Management (DIFC) Ltd2026-06-302026-08-15127$8,866None
Rafferty Asset Management, LLC2026-06-302026-08-153,499$244,265None
Marex Group Ltd2026-06-302026-08-153,800$265,278None
Susquehanna Portfolio Strategies, LLC2026-06-302026-08-1595,770$6,685,704None
Vestal Point Capital, LP2026-06-302026-08-151,000,000$69,810,000None
Quarry LP2026-06-302026-08-153,250$226,883None
ADAR1 Capital Management, LLC2026-06-302026-08-15244,184$17,046,485None
Nearwater Capital Markets, Ltd2026-06-302026-08-15261,500$18,255,315None
Rangeley Capital, LLC2026-06-302026-08-157,000$488,670None
Deep Track Capital, LP2026-06-302026-08-15300,000$20,943,000None
XTX Topco Ltd2026-06-302026-08-1519,125$1,335,116None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-15284,971$19,893,826None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-15284,971$19,893,826None
ExodusPoint Capital Management, LP2026-06-302026-08-1558,507$4,084,374None
Qube Research & Technologies Ltd2026-06-302026-08-15130,521$9,111,671None
Diametric Capital, LP2026-06-302026-08-1515,967$1,114,656None
Caption Management, LLC2026-06-302026-08-1526,100$1,822,041Put
Caption Management, LLC2026-06-302026-08-15171,100$11,944,491Call
OSAIC HOLDINGS, INC.2026-06-302026-08-153,293$229,884None
OSAIC HOLDINGS, INC.2026-06-302026-08-15890$62,117None
Squarepoint Ops LLC2026-06-302026-08-155,807$405,387None
Trexquant Investment LP2026-06-302026-08-1556,680$3,956,831None
Quinn Opportunity Partners LLC2026-06-302026-08-15153,076$10,686,236None
MetLife Investment Management, LLC2026-06-302026-08-1520,087$1,402,273None
Engineers Gate Manager LP2026-06-302026-08-1519,183$1,339,165None
Birchview Capital, LP2026-06-302026-08-1581,000$5,654,610None
JANE STREET GROUP, LLC2026-06-302026-08-158,327$581,308None
JANE STREET GROUP, LLC2026-06-302026-08-1523,400$1,633,554Put
JANE STREET GROUP, LLC2026-06-302026-08-1522,500$1,570,725Call
Orion Porfolio Solutions, LLC2026-06-302026-08-153,181$222,066None
LMR Partners LLP2026-06-302026-08-15130,000$9,075,300Put
LMR Partners LLP2026-06-302026-08-15100,000$6,981,000None
AWM Investment Company, Inc.2026-06-302026-08-1520,925$1,460,774None
Legal & General Group Plc2026-06-302026-08-1514,195$990,954None
Legal & General Group Plc2026-06-302026-08-156,239$435,545None
Legal & General Group Plc2026-06-302026-08-153,346$233,584None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15823,700$57,502,497Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15394,500$27,540,045Put
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15278,977$19,475,384None

90-day public filing window, up to 50 source positions.

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗Kimelman & Baird, LLC ↗Empowered Funds, LLC ↗Stonepine Capital Management, LLC ↗CAPSTONE INVESTMENT ADVISORS, LLC ↗Jefferies Financial Group Inc. ↗Ishara Investments LP ↗AMERIFLEX GROUP, INC. ↗SummitTX Capital, L.P. ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.

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