Regeneron (NASDAQ: REGN) reports $700.4M in 13F holdings

Rhea-AI Filing Summary

REGENERON PHARMACEUTICALS, INC. filed a Form 13F reporting institutional holdings totaling $700,444,832. The filing lists 4 information-table entries and was submitted as a 13F Holdings Report by the reporting manager. The report certifies the information is true and complete and is signed by Leonard Brooks, Senior Vice President, Treasurer.

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Accepted by SEC EDGAR 11/07/2025 - 04:55 PM Learn about SEC filing dates

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: 09-30-2025

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	11-07-2025
[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:		4
	Form 13F Information Table Value Total:		700,444,832
			(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 REGN's Form 13F disclose?

It discloses institutional holdings valued at $700,444,832 across 4 reported positions. The Form 13F Information Table total and entry count are included on the cover summary and represent the holdings reported by the filing manager.

Who filed the 13F for REGN and who signed it?

The report was filed by the institutional investment manager named REGENERON PHARMACEUTICALS, INC. The signature block shows Leonard Brooks, Senior Vice President, Treasurer executed the filing on behalf of the manager.

How many holdings entries are listed in the REGN 13F filing?

The Form 13F Information Table Entry Total is 4 entries. That figure appears on the Form 13F summary page as the count of holdings rows included in the submitted report.

What is the total value reported on REGN's 13F summary page?

The Form 13F Information Table Value Total is $700,444,832. This dollar amount is shown on the report summary page and is rounded to the nearest dollar as presented in the filing.

Does the 13F filing indicate any amendments or other included managers?

The filing indicates no other included managers and shows the report type as a 13F Holdings Report. The List of Other Included Managers entry is stated as NONE on the cover summary.