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SEC Form 4 research

REGENERON PHARMACEUTICALS INC insider transactions

Inspect REGENERON PHARMACEUTICALS INC's public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0000872589
Reporting owners
38
Officers and directors
32
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Read one actual disclosure before using it

Show the table · 1 row, 7 columns

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2026-09-042026-09-02Guarini KathrynS400$850Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-09-02 and its public availability date is 2026-09-04. Subtracting those calendar dates gives 2 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 S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

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 accession 0001992352-26-000007 ↗SEC accession 0001663758-26-000002 ↗SEC accession 0001663758-26-000002 ↗

Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

Show the table · 5 rows, 7 columns

Scroll sideways to compare all columns. Select a heading to sort.

2026-09-042026-09-02Guarini KathrynS400$850Not reported
2026-09-042026-09-03McCourt MarionS1,131$857.39Not reported
2026-09-042026-09-02McCourt MarionS1,215$850Not reported
2026-08-132026-08-10Guarini KathrynS400$800Not reported
2026-08-132026-08-10Zoghbi Huda YS800$800Not reported

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Inspect all 33 displayed rows: Officers and directors in the directory

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Bassler Bonnie L000168360726
Landry Robert E0001585160293
Zoghbi Huda Y000168164334
SING GEORGE L0001225471140
LAROSA JOSEPH J000123830382
GOLDSTEIN JOSEPH L0001225474138
STAHL NEIL0001226689275
RYAN ARTHUR F0001187443715
McCourt Marion000166375852
VAGELOS P ROY0001013064195
BROWN MICHAEL S0001174475191
MURPHY ANDREW J0001796226209
INGRAM ROBERT ALEXANDER0001219890145
Aberman Michael S000148776772
BAKER CHARLES A000122547095
COLES N ANTHONY000119701886
Fenimore Christopher R.000169742277
GILMAN ALFRED G000122547374
GOLDBERG MURRAY A0001226435190
Guarini Kathryn00019923522
KOLINSKI STUART000122668628
McCorkle Douglas S0001403178112
Pitofsky Jason000200923613
POON CHRISTINE A000118901442
Powchik Peter000137724754
ROBERTS WILLIAM000122668761
RUPP RANDALL000122668823
SCHLEIFER LEONARD S0001218629167
SHOOTER ERIC M000122547270
Terifay Robert J000139138249
Tessier-Lavigne Marc0001437435100
Van Plew Daniel P0001411984165
YANCOPOULOS GEORGE0001226690215
Bassler Bonnie L ↗Landry Robert E ↗Zoghbi Huda Y ↗SING GEORGE L ↗LAROSA JOSEPH J ↗GOLDSTEIN JOSEPH L ↗STAHL NEIL ↗RYAN ARTHUR F ↗McCourt Marion ↗VAGELOS P ROY ↗BROWN MICHAEL S ↗MURPHY ANDREW J ↗INGRAM ROBERT ALEXANDER ↗Aberman Michael S ↗BAKER CHARLES A ↗COLES N ANTHONY ↗Fenimore Christopher R. ↗GILMAN ALFRED G ↗GOLDBERG MURRAY A ↗Guarini Kathryn ↗KOLINSKI STUART ↗McCorkle Douglas S ↗Pitofsky Jason ↗POON CHRISTINE A ↗Powchik Peter ↗ROBERTS WILLIAM ↗RUPP RANDALL ↗SCHLEIFER LEONARD S ↗SHOOTER ERIC M ↗Terifay Robert J ↗Tessier-Lavigne Marc ↗Van Plew Daniel P ↗YANCOPOULOS GEORGE ↗

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.