Company · Ownership research

IONIS PHARMACEUTICALS INC IONS

CIK 0000874015

Form 4 transactions dated Nov 1, 2023 to Nov 10, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 38 rows; the complete set is available through the API.

Insider filings on file run through Oct 19, 2026.

Insider purchases & sales

Purchased: $1.72M
Sold: $209.37M

Nov 1, 2023 – Oct 19, 2026
Available records · partial months are marked ·

Insiders in this window

202410 of 30 preview events · 38 available in 2024

Date	Insider	Activity	Trade value (USD)	% of prior holding
Dec 23, 2024	Hayden Michael R Director	Purchase	$181.08K 5,000 shares bought	16.55% added Direct holding	▾
Nov 12, 2024	Swayze Eric EVP Research	Sale10b5-1 footnote	$45.28K 1,194 shares sold	3.42% sold Direct holding	▾
Nov 12, 2024	Monia Brett P Chief Executive Officer · Director	Sale10b5-1 footnote	$252.29K 6,630 shares sold	3.81% sold Direct holding	▾
Nov 12, 2024	LOSCALZO JOSEPH Director	Sale10b5-1 footnote	$511.43K 13,508 shares sold	29.52% sold Direct holding	▾
Oct 16, 2024	Swayze Eric EVP Research	Sale	$2.03K 53 shares sold	25.24% sold Indirect holding	▾
Aug 29, 2024	Geary Richard S EVP, Chief Development Officer	Sale10b5-1 footnote	$16.43K 331 shares sold	0.39% sold Direct holding	▾
Aug 28, 2024	Geary Richard S EVP, Chief Development Officer	Sale10b5-1 footnote	$15.73K 320 shares sold	0.37% sold Direct holding	▾
Aug 5, 2024	Geary Richard S EVP, Chief Development Officer	Sale10b5-1 footnote	$116.64K 2,430 shares sold	2.76% sold Direct holding	▾
Jul 16, 2024	KLEIN JOSEPH III Director	Sale10b5-1 footnote	$600.00K 12,000 shares sold	100.00% sold Trust holding	▾
Jul 16, 2024	Diaz Allene M. Director	Sale10b5-1 footnote	$81.02K 1,637 shares sold	9.43% sold Direct holding	▾

Showing 30 / 38 record groups in 2024. The complete set is available through the API.

IONIS PHARMACEUTICALS INC · IONS

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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 30 of 38 purchase / sale groups and 30 of 116 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"IONS","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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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.