Company · Ownership research

REGENERON PHARMACEUTICALS, INC. REGN

CIK 0000872589

Form 4 transactions dated Nov 1, 2023 to Nov 7, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 67 rows; the complete set is available through the API.

Insider filings on file run through Nov 6, 2026.

Insider purchases & sales

Purchased: $0.00
Sold: $386.61M

Nov 1, 2023 – Nov 6, 2026
Available records · partial months are marked ·

202410 of 30 preview events · 67 available in 2024

Date	Insider	Activity	Trade value (USD)	% of prior holding
Nov 1, 2024	McCourt Marion EVP Commercial	Sale10b5-1 footnote	$844.61K 1,000 shares sold	7.18% sold Direct holding	▾
Oct 1, 2024	RYAN ARTHUR F Director	Sale10b5-1 footnote	$104.88K 100 shares sold	0.57% sold Direct holding	▾
Oct 1, 2024	McCourt Marion EVP Commercial	Sale10b5-1 footnote	$1.05M 1,000 shares sold	7.18% sold Direct holding	▾
Sep 3, 2024	McCourt Marion EVP Commercial	Sale10b5-1 footnote	$1.18M 1,000 shares sold	7.18% sold Direct holding	▾
Sep 3, 2024	RYAN ARTHUR F Director	Sale10b5-1 footnote	$117.87K 100 shares sold	0.56% sold Direct holding	▾
Aug 28, 2024	Fenimore Christopher R. SVP Finance & CFO	Sale	$1.44M 1,194 shares sold	100.00% sold Indirect holding	▾
Aug 28, 2024	Fenimore Christopher R. SVP Finance & CFO	Sale	$4.36M 3,615 shares sold	100.00% sold Indirect holding	▾
Aug 28, 2024	Fenimore Christopher R. SVP Finance & CFO	Sale	$525.88K 436 shares sold	94.58% sold Trust holding	▾
Aug 28, 2024	Fenimore Christopher R. SVP Finance & CFO	Sale	$524.67K 435 shares sold	94.57% sold Trust holding	▾
Aug 15, 2024	Bassler Bonnie L Director	Sale10b5-1 footnote	$884.52K 756 shares sold	35.36% sold Direct holding	▾

Showing 30 / 67 record groups in 2024. The complete set is available through the API.

REGENERON PHARMACEUTICALS, INC. · REGN

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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 67 purchase / sale groups and 30 of 177 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"REGN","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.