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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 2026-11-07T14:03:26.246Z

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2026-09-262026-09-23WHITFIELD ROY AA2,000Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-09-23 and its public availability date is 2026-09-26. Subtracting those calendar dates gives 3 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC 0001193125-26-403105 ↗SEC 0001193125-26-403105 ↗SEC 0001193125-26-403103 ↗

Recent Form 4 activity

Inspect all 12 displayed rows: 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 ROBERTA2,000Not reported
2026-09-262026-09-23CHESS ROBERTA4,000Not 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

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

Recent institutional filing receipts

Inspect all 50 displayed rows: 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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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.