Regeneron Pharmaceuticals (REGN) Form 4 REGENERON PHARMACEUTICALS / GEORGE YANCOPOULOS ownership change

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

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

1. Name and Address of Reporting Person^*

YANCOPOULOS GEORGE

(Last) (First) (Middle)

777 OLD SAW MILL RIVER ROAD

(Street)

TARRYTOWN NY 10591

(City) (State) (Zip)

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
X	Officer (give title below)	Other (specify below)
Bd. Co-Chair, President & CSO

3. Date of Earliest Transaction (Month/Day/Year)
05/15/2024

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

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

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

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	05/15/2024		S(1)		111	D	$965.69(2)	886,272	D
Common Stock	05/15/2024		S(1)		782	D	$966.29(3)	885,490	D
Common Stock	05/15/2024		S(1)		1,428	D	$967.45(4)	884,062	D
Common Stock	05/15/2024		S(1)		3,387	D	$968.43(5)	880,675	D
Common Stock	05/15/2024		S(1)		1,930	D	$969.14(6)	878,745	D
Common Stock	05/15/2024		S(1)		846	D	$970.36(7)	877,899	D
Common Stock	05/15/2024		S(1)		406	D	$971.28(8)	877,493	D
Common Stock	05/15/2024		S(1)		784	D	$972.5(9)	876,709	D
Common Stock	05/15/2024		S(1)		1,865	D	$973.43(10)	874,844	D
Common Stock	05/15/2024		S(1)		4,778	D	$974.47(11)	870,066	D
Common Stock	05/15/2024		S(1)		5,225	D	$975.6(12)	864,841	D
Common Stock	05/15/2024		S(1)		6,885	D	$976.56(13)	857,956	D
Common Stock	05/15/2024		S(1)		9,851	D	$977.42(14)	848,105	D
Common Stock	05/15/2024		S(1)		4,865	D	$978.44(15)	843,240	D
Common Stock	05/15/2024		S(1)		504	D	$979.87(16)	842,736	D
Common Stock	05/15/2024		S(1)		1,223	D	$980.72(17)	841,513	D
Common Stock	05/15/2024		S(1)		2,283	D	$981.52(18)	839,230	D
Common Stock	05/15/2024		S(1)		303	D	$982.29(19)	838,927	D
Common Stock	05/15/2024		S(1)		727	D	$983.88(20)	838,200	D
Common Stock	05/15/2024		S(1)		53	D	$984.02	838,147	D
Common Stock	05/15/2024		S(1)		647	D	$985.62(21)	837,500	D
Common Stock	05/15/2024		S(1)		442	D	$986.4(22)	837,058	D
Common Stock	05/15/2024		S(1)		182	D	$987.38(23)	836,876	D
Common Stock	05/15/2024		S(1)		373	D	$988.36(24)	836,503	D
Common Stock	05/15/2024		S(1)		120	D	$989.14(25)	836,383	D
Common Stock								5,903	I	By 401(k) Plan
Common Stock								180,000	I	By Trust for Chldn.(26)
Common Stock								158,410	I	by 2022 GRAT II
Common Stock								18,148	I	by Children

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

Explanation of Responses:

1. Disposition/acquisition made pursuant to plans intended to comply with Rule 10b5-1(c) adopted on February 14, 2024.

2. Represents volume-weighted average price of sales of 111 shares of Company stock on May 15, 2024 at prices ranging from $965.58 to $965.70. 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 May 15, 2024 at each separate price.

3. Represents volume-weighted average price of sales of 782 shares of Company stock on May 15, 2024 at prices ranging from $966.04 to $966.68. 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 May 15, 2024 at each separate price.

4. Represents volume-weighted average price of sales of 1,428 shares of Company stock on May 15, 2024 at prices ranging from $967.07 to $967.99. 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 May 15, 2024 at each separate price.

5. Represents volume-weighted average price of sales of 3,387 shares of Company stock on May 15, 2024 at prices ranging from $968.06 to $968.90. 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 May 15, 2024 at each separate price.

6. Represents volume-weighted average price of sales of 1,930 shares of Company stock on May 15, 2024 at prices ranging from $969.03 to $969.96. 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 May 15, 2024 at each separate price.

7. Represents volume-weighted average price of sales of 846 shares of Company stock on May 15, 2024 at prices ranging from $970.26 to $970.95. 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 May 15, 2024 at each separate price.

8. Represents volume-weighted average price of sales of 406 shares of Company stock on May 15, 2024 at prices ranging from $971.02 to $971.37. 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 May 15, 2024 at each separate price.

9. Represents volume-weighted average price of sales of 784 shares of Company stock on May 15, 2024 at prices ranging from $972.05 to $972.92. 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 May 15, 2024 at each separate price.

10. Represents volume-weighted average price of sales of 1,865 shares of Company stock on May 15, 2024 at prices ranging from $973.00 to $973.99. 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 May 15, 2024 at each separate price.

11. Represents volume-weighted average price of sales of 4,778 shares of Company stock on May 15, 2024 at prices ranging from $974.01 to $974.98. 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 May 15, 2024 at each separate price.

12. Represents volume-weighted average price of sales of 5,225 shares of Company stock on May 15, 2024 at prices ranging from $975.05 to $975.99. 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 May 15, 2024 at each separate price.

13. Represents volume-weighted average price of sales of 6,885 shares of Company stock on May 15, 2024 at prices ranging from $976.00 to $976.99. 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 May 15, 2024 at each separate price.

14. Represents volume-weighted average price of sales of 9,851 shares of Company stock on May 15, 2024 at prices ranging from $977.00 to $977.99. 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 May 15, 2024 at each separate price.

15. Represents volume-weighted average price of sales of 4,865 shares of Company stock on May 15, 2024 at prices ranging from $978.01 to $978.97. 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 May 15, 2024 at each separate price.

16. Represents volume-weighted average price of sales of 504 shares of Company stock on May 15, 2024 at prices ranging from $979.18 to $979.95. 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 May 15, 2024 at each separate price.

17. Represents volume-weighted average price of sales of 1,223 shares of Company stock on May 15, 2024 at prices ranging from $980.11 to $980.99. 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 May 15, 2024 at each separate price.

18. Represents volume-weighted average price of sales of 2,283 shares of Company stock on May 15, 2024 at prices ranging from $981.06 to $981.95. 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 May 15, 2024 at each separate price.

19. Represents volume-weighted average price of sales of 303 shares of Company stock on May 15, 2024 at prices ranging from $982.00 to $982.73. 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 May 15, 2024 at each separate price.

20. Represents volume-weighted average price of sales of 727 shares of Company stock on May 15, 2024 at prices ranging from $983.21 to $983.99. 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 May 15, 2024 at each separate price.

21. Represents volume-weighted average price of sales of 647 shares of Company stock on May 15, 2024 at prices ranging from $985.11 to $985.94. 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 May 15, 2024 at each separate price.

22. Represents volume-weighted average price of sales of 442 shares of Company stock on May 15, 2024 at prices ranging from $986.30 to $986.96. 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 May 15, 2024 at each separate price.

23. Represents volume-weighted average price of sales of 182 shares of Company stock on May 15, 2024 at prices ranging from $987.03 to $987.63. 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 May 15, 2024 at each separate price.

24. Represents volume-weighted average price of sales of 373 shares of Company stock on May 15, 2024 at prices ranging from $988.00 to $988.99. 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 May 15, 2024 at each separate price.

25. Represents volume-weighted average price of sales of 120 shares of Company stock on May 15, 2024 at prices ranging from $989.01 to $989.28. 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 May 15, 2024 at each separate price.

26. As investment trustee of trusts for the benefit of the reporting person's children.

	/s/**George D. Yancopoulos	05/17/2024
	** Signature of Reporting Person	Date
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