Regeneron director Huda Y. Zoghbi sells 7,439 shares

The option vested in three equal annual installments, beginning one year after grant.

Available on EDGAR 11/05/2026 - 04:06 PM EST Accepted by SEC EDGAR 11/05/2026 - 04:05 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Regeneron Pharmaceuticals, Inc. director Huda Y. Zoghbi exercised options for 7,439 common shares on November 3, 2026, at a $380.95 exercise price. She sold 6,939 shares at a $970.42 volume-weighted average price and another 500 shares at $971.06 that day. No Rule 10b5-1 plan is reported.

Insider Trade Summary

Exercise and Sale: 7,439 shares ($4.39M approx. pre-tax spread)

Exercise and Sale 4 txns

Insider Zoghbi Huda Y

Role Director

Sold 7,439 shs ($7.22M)

Approx. gross sale proceeds $7.22M

Approx. exercise cost $2.83M

Approx. pre-tax spread $4.39M

Type	Security	Shares	Price	Value
Exercise	Non-Qualified Stock Option (right to buy) F3	7,439	$0.00	$0.00
Exercise	Common Stock	7,439	$380.95	$2.83M
Sale	Common Stock F1	6,939	$970.42	$6.73M
Sale	Common Stock F2	500	$971.06	$486K

Holdings After Transaction: Non-Qualified Stock Option (right to buy) — 0 contracts (Direct); Common Stock — 1,703 shares (Direct)

Footnotes (3)

1. F1. Represents volume-weighted average price of sales of 6,939 shares of Company stock on November 3, 2026 at prices ranging from $970.00 to $970.85. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on November 3, 2026 at each separate price.
2. F2. Represents volume-weighted average price of sales of 500 shares of Company stock on November 3, 2026 at prices ranging from $971.00 to $971.11. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on November 3, 2026 at each separate price.
3. F3. The stock option vested in three equal annual installments, commencing one year after the date of grant.

Key Figures

Options exercised: 7,439 options Exercise price: $380.95 per share Common shares acquired through exercise: 7,439 shares +4 more

7 metrics

Options exercised 7,439 options November 3, 2026

Exercise price $380.95 per share November 3, 2026

Common shares acquired through exercise 7,439 shares November 3, 2026

Shares sold 6,939 shares November 3, 2026

Volume-weighted average sale price $970.42 per share 6,939-share sale on November 3, 2026

Shares sold 500 shares November 3, 2026

Volume-weighted average sale price $971.06 per share 500-share sale on November 3, 2026

Key Terms

Non-Qualified Stock Option, volume-weighted average price, annual installments

3 terms

Non-Qualified Stock Option financial

"Non-Qualified Stock Option (right to buy)"

A non-qualified stock option (NSO) is a contract that lets an employee or service provider buy company shares at a fixed price for a set period, like a voucher to purchase stock later at today’s price. It matters to investors because exercising NSOs creates ordinary income for the holder and can increase share count, affecting a company’s earnings and ownership mix; think of it as a future sale that can dilute existing shareholders and has immediate tax consequences for the recipient.

volume-weighted average price financial

"volume-weighted average price of sales of 6,939 shares"

Volume-weighted average price (VWAP) is the average price of a stock over a specific time period where each trade is weighted by the number of shares traded, so larger trades influence the average more than small ones. Investors and traders use VWAP as a reference point to judge whether trades are happening at relatively good or poor prices—like checking the average price paid for an item at a market where bulk purchases count more than single-item buys.

annual installments financial

"vested in three equal annual installments"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many REGN shares did Huda Y. Zoghbi sell, and at what prices?

She reported two sales on November 3, 2026: 6,939 shares at a volume-weighted average price of $970.42, with prices ranging from $970.00 to $970.85, and 500 shares at a volume-weighted average price of $971.06, with prices ranging from $971.00 to $971.11.

How did Huda Y. Zoghbi's REGN stock options vest?

The option vested in three equal annual installments, commencing one year after the grant date.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Zoghbi Huda Y

(Last) (First) (Middle)

777 OLD SAW MILL RIVER ROAD

(Street)

TARRYTOWN NEW YORK 10591

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
REGENERON PHARMACEUTICALS, INC. [ REGN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
11/03/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	11/03/2026		M		7,439	A	$380.95	9,142	D
Common Stock	11/03/2026		S		6,939	D	$970.42(1)	2,203	D
Common Stock	11/03/2026		S		500	D	$971.06(2)	1,703	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Non-Qualified Stock Option (right to buy)	$380.95	11/03/2026		M			7,439	(3)	01/02/2028	Common Stock	7,439	$0.0	0	D

Explanation of Responses:

1. Represents volume-weighted average price of sales of 6,939 shares of Company stock on November 3, 2026 at prices ranging from $970.00 to $970.85. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on November 3, 2026 at each separate price.

2. Represents volume-weighted average price of sales of 500 shares of Company stock on November 3, 2026 at prices ranging from $971.00 to $971.11. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on November 3, 2026 at each separate price.

3. The stock option vested in three equal annual installments, commencing one year after the date of grant.

	/s/ Huda Y. Zoghbi	11/05/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)