Regeneron (NASDAQ: REGN) reports $47.9M in 13F holdings

Rhea-AI Filing Summary

Regeneron Pharmaceuticals, Inc. filed a Form 13F reporting institutional holdings as of the filing, listing 2 information-table entries with a Form 13F Information Table Value Total of $47,884,476. The report was signed by Leonard Brooks, Senior Vice President, Treasurer, on 05-08-2026.

Key Figures

Form 13F Information Table Entry Total: 2 Form 13F Information Table Value Total: $47,884,476 Form 13F File Number: 028-24826 +1 more

4 metrics

Form 13F Information Table Entry Total 2 reported on the Form 13F summary page

Form 13F Information Table Value Total $47,884,476 aggregate market value reported on the Form 13F summary page

Form 13F File Number 028-24826 identifier for the filing manager

Signature Date 05-08-2026 date the report was signed by Leonard Brooks

Key Terms

Form 13F, Institutional Investment Manager, Form 13F Information Table Value Total

3 terms

Form 13F regulatory

"Form 13F Summary Page --------------------- | Report Summary"

A Form 13F is a quarterly filing that large investment managers must submit to disclose their holdings in publicly traded stocks and certain other securities. It acts like a peek into the portfolios of big investors, helping other market participants see what large players are buying or selling and offering clues about investment trends, crowded trades, and potential market impact.

Institutional Investment Manager regulatory

"Institutional Investment Manager Filing this Report Name: | REGENERON PHARMACEUTICALS, INC."

Form 13F Information Table Value Total financial

"Form 13F Information Table Value Total: | 47,884,476"

The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F COVER PAGE

OMB APPROVAL

OMB Number:			3235-0006
Estimated average burden
hours per response:			23.8

Report for the Calendar Year or Quarter Ended: 03-31-2026

Check here if Amendment		Amendment Number:
This Amendment (Check only one.):		is a restatement.
		adds new holdings entries.

Institutional Investment Manager Filing this Report:
Name:	REGENERON PHARMACEUTICALS, INC.
Address:	777 OLD SAW MILL RIVER ROAD
	TARRYTOWN, NY 10591
Form 13F File Number:	028-24826
CRD Number (if applicable):
SEC File Number (if applicable):

The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:
Name:		Leonard Brooks
Title:		Senior Vice President, Treasurer
Phone:		914-847-7000
Signature, Place, and Date of Signing:
/s/ Leonard Brooks			Sleepy Hollow, NY	05-08-2026
[Signature]			[City, State]	[Date]

Report Type (Check only one.):
X	13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.)
	13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).)
	13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).)

Form 13F Summary Page
	Report Summary:
	Number of Other Included Managers:		0
	Form 13F Information Table Entry Total:		2
	Form 13F Information Table Value Total:		47,884,476
			(round to nearest dollar)

List of Other Included Managers:

Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report.

[If there are no entries in this list, state "NONE" and omit the column headings and list entries.]

NONE

FAQ

What does Regeneron’s Form 13F (REGN) show?

Answer: The filing lists 2 reported holdings entries with a total reported market value of $47,884,476. It is a routine institutional holdings disclosure signed by the company’s Treasurer on 05-08-2026.

Who signed Regeneron’s Form 13F filing for REGN?

Answer: The report was signed by Leonard Brooks, Senior Vice President, Treasurer. The signature block shows place Sleepy Hollow, NY and date 05-08-2026, certifying the report’s contents as true and complete.

How many holdings entries did Regeneron report in this 13F?

Answer: The Form 13F Information Table Entry Total is listed as 2 entries. The summary page also states there are 0 other included managers and an aggregate value total of $47,884,476.

Does Regeneron’s 13F filing disclose trading activity or transactions?

Answer: No trading details or transaction-level data are shown on the summary page. The filing provides holdings disclosure counts and an aggregate value; specific buy/sell transactions are not included in the visible excerpt.

Where is Regeneron’s Form 13F filed and what is its file number?

Answer: The filing identifies the institutional investment manager as Regeneron Pharmaceuticals, Inc. with Form 13F File Number 028-24826. The mailing address shown is 777 Old Saw Mill River Road, Tarrytown, NY 10591.