Company · Ownership research

NEKTAR THERAPEUTICS NKTR

CIK 0000906709

Form 4 transactions dated Oct 1, 2023 to Oct 15, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

Insider filings on file run through Sep 25, 2026.

Insider purchases & sales

Purchased: $0.00
Sold: $3.96M

Oct 1, 2023 – Sep 25, 2026
Available records · partial months are marked ·

202610 of 11 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Aug 18, 2026	Zalevsky Jonathan Chief R&D Officer	Sale	$13.39K 186 shares sold	1.91% sold Direct holding	▾
Aug 18, 2026	ROBIN HOWARD W President & CEO · Director	Sale	$30.09K 418 shares sold	0.76% sold Direct holding	▾
Jun 30, 2026	Zalevsky Jonathan Chief R&D Officer	Sale10b5-1 footnote	$397.67K 5,681 shares sold	36.80% sold Direct holding	▾
Jun 17, 2026	ROBIN HOWARD W President & CEO · Director	Sale10b5-1 footnote	$611.88K 10,000 shares sold	15.37% sold Direct holding	▾
Jun 16, 2026	ROBIN HOWARD W President & CEO · Director	Sale10b5-1 footnote	$603.18K 10,000 shares sold	13.33% sold Direct holding	▾
Jun 15, 2026	Zalevsky Jonathan Chief R&D Officer	Sale10b5-1 footnote	$336.21K 5,538 shares sold	26.40% sold Direct holding	▾
May 19, 2026	Zalevsky Jonathan Chief R&D Officer	Sale	$13.04K 199 shares sold	0.94% sold Direct holding	▾
May 19, 2026	ROBIN HOWARD W President & CEO · Director	Sale	$29.09K 444 shares sold	0.59% sold Direct holding	▾
Feb 18, 2026	Zalevsky Jonathan Chief R&D Officer	Sale	$13.14K 180 shares sold	0.84% sold Direct holding	▾
Feb 18, 2026	ROBIN HOWARD W President & CEO · Director	Sale	$30.88K 423 shares sold	0.56% sold Direct holding	▾

Showing 11 / 11 record groups in 2026. The complete set is available through the API.

NEKTAR THERAPEUTICS · NKTR

Follow the people behind the trades.

Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and reach other datasets through the Akkru API.

Download CSV
Earlier filings
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 11 of 11 purchase / sale groups and 12 of 12 other groups; the totals and the monthly series cover the whole window.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP.

MCP  https://api.akkrudata.ai/mcp

list_insider_transactions
{"ticker":"NKTR","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP documentation: /documents
llms.txt: /llms.txt

Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.