Statement of Changes in Beneficial Ownership (4)

FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response... 0.5
Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^* SING GEORGE L	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)
(Last) (First) (Middle) 777 OLD SAW MILL RIVER ROAD	3. Date of Earliest Transaction (MM/DD/YYYY) 8/25/2020
(Street) TARRYTOWN, NY 10591 (City) (State) (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	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. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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)
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	8/25/2020		M		12750	A	$273.67	97165	D
Common Stock	8/25/2020		S		1400	D	$600.36 ⁽¹⁾	95765	D
Common Stock	8/25/2020		S		300	D	$601.75 ⁽²⁾	95465	D
Common Stock	8/25/2020		S		400	D	$602.68 ⁽³⁾	95065	D
Common Stock	8/25/2020		S		3000	D	$603.53 ⁽⁴⁾	92065	D
Common Stock	8/25/2020		S		3705	D	$604.43 ⁽⁵⁾	88360	D
Common Stock	8/25/2020		S		4700	D	$605.53 ⁽⁶⁾	83660	D
Common Stock	8/25/2020		S		5168	D	$606.43 ⁽⁷⁾	78492	D
Common Stock	8/25/2020		S		2384	D	$607.46 ⁽⁸⁾	76108	D
Common Stock	8/25/2020		S		300	D	$608.06	75808	D
Common Stock	8/25/2020		S		760	D	$609.67 ⁽⁹⁾	75048	D
Common Stock	8/25/2020		S		3793	D	$610.42 ⁽¹⁰⁾	71255	D
Common Stock	8/25/2020		S		3840	D	$611.6 ⁽¹¹⁾	67415	D
Common Stock	8/25/2020		S		1900	D	$612.43 ⁽¹²⁾	65515	D
Common Stock	8/25/2020		S		800	D	$613.39 ⁽¹³⁾	64715	D
Common Stock	8/25/2020		S		300	D	$614.15 ⁽¹⁴⁾	64415	D
Common Stock	8/25/2020		S		1000	D	$612.0	3700	I	by Trust for Son
Common Stock								1150	I	by Spouse
Common Stock								400	I	by Spouse/Cust Son

*Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)*
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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		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 of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)			11. Nature of Indirect Beneficial Ownership (Instr. 4)
Non-Qualified Stock Option (right to buy)	$273.67	8/25/2020		M			12750	⁽¹⁵⁾	1/2/2024	Common Stock	12750	$0.0	0	D

Explanation of Responses:
(1)	Represents volume-weighted average price of sales of 1,400 shares of Company stock on August 25, 2020 at prices ranging from $600.04 to $600.93. 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 August 25, 2020 at each separate price.
(2)	Represents volume-weighted average price of sales of 300 shares of Company stock on August 25, 2020 at prices ranging from $601.64 to $601.81. 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 August 25, 2020 at each separate price.
(3)	Represents volume-weighted average price of sales of 400 shares of Company stock on August 25, 2020 at prices ranging from $602.05 to $602.97. 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 August 25, 2020 at each separate price.
(4)	Represents volume-weighted average price of sales of 3,000 shares of Company stock on August 25, 2020 at prices ranging from $603.02 to $603.95. 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 August 25, 2020 at each separate price.
(5)	Represents volume-weighted average price of sales of 3,705 shares of Company stock on August 25, 2020 at prices ranging from $604.00 to $604.99. 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 August 25, 2020 at each separate price.
(6)	Represents volume-weighted average price of sales of 4,700 shares of Company stock on August 25, 2020 at prices ranging from $605.00 to $605.99. 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 August 25, 2020 at each separate price.
(7)	Represents volume-weighted average price of sales of 5,168 shares of Company stock on August 25, 2020 at prices ranging from $606.05 to $606.85. 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 August 25, 2020 at each separate price.
(8)	Represents volume-weighted average price of sales of 2,384 shares of Company stock on August 25, 2020 at prices ranging from $607.13 to $607.97. 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 August 25, 2020 at each separate price.
(9)	Represents volume-weighted average price of sales of 760 shares of Company stock on August 25, 2020 at prices ranging from $609.15 to $609.85. 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 August 25, 2020 at each separate price.
(10)	Represents volume-weighted average price of sales of 3,793 shares of Company stock on August 25, 2020 at prices ranging from $610.00 to $610.96. 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 August 25, 2020 at each separate price.
(11)	Represents volume-weighted average price of sales of 3,840 shares of Company stock on August 25, 2020 at prices ranging from $611.14 to $611.99. 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 August 25, 2020 at each separate price.
(12)	Represents volume-weighted average price of sales of 1,900 shares of Company stock on August 25, 2020 at prices ranging from $612.09 to $612.94. 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 August 25, 2020 at each separate price.
(13)	Represents volume-weighted average price of sales of 800 shares of Company stock on August 25, 2020 at prices ranging from $613.07 to $613.89. 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 August 25, 2020 at each separate price.
(14)	Represents volume-weighted average price of sales of 300 shares of Company stock on August 25, 2020 at prices ranging from $614.01 to $614.29. 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 August 25, 2020 at each separate price.
(15)	The stock option becomes exercisable in three equal annual installments, commencing one year after the date of grant.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
SING GEORGE L 777 OLD SAW MILL RIVER ROAD TARRYTOWN, NY 10591	X