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 * Aberman Michael S	2. Issuer Name and Ticker or Trading Symbol REGENERON PHARMACEUTICALS INC [ REGN ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director                      _____ 10% Owner __ X __ Officer (give title below)      _____ Other (specify below) SVP Strategy Investor Relation
(Last)          (First)          (Middle) 777 OLD SAW MILL RIVER ROAD	3. Date of Earliest Transaction (MM/DD/YYYY) 6/21/2017
(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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	6/21/2017		M (1)		4500	A	$30.63	9193	D
Common Stock	6/21/2017		F (1)		270	D	$510.02	8923	D
Common Stock	6/21/2017		F (1)		1961	D	$510.02	6962	D
Common Stock	6/22/2017		S (1)		395	D	$525.21   (2)	6567	D
Common Stock	6/22/2017		S (1)		100	D	$526.02	6467	D
Common Stock	6/22/2017		S (1)		100	D	$529.61	6367	D
Common Stock	6/22/2017		S (1)		100	D	$530.66	6267	D
Common Stock	6/22/2017		S (1)		274	D	$531.51   (3)	5993	D
Common Stock	6/22/2017		S (1)		200	D	$532.27   (4)	5793	D
Common Stock	6/22/2017		S (1)		200	D	$533.48   (5)	5593	D
Common Stock	6/22/2017		S (1)		200	D	$534.51   (6)	5393	D
Common Stock	6/22/2017		S (1)		400	D	$536.52   (7)	4993	D
Common Stock	6/22/2017		S (1)		100	D	$537.5	4893	D
Common Stock	6/22/2017		S (1)		100	D	$538.3	4793	D
Common Stock	6/22/2017		S (1)		100	D	$541.0	4693	D
Common Stock								11805	I	by GRAT
Common Stock								448	I	By 401(k) Plan

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Non-Qualified Stock Option (right to buy)	$30.63	6/21/2017		M   (1)			4500	(8)	12/14/2020	Common Stock	4500	$0.0	3000	D

Explanation of Responses:
(1)	Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).
(2)	Represents volume-weighted average price of sales of 395 shares of Company stock on June 22, 2017 at prices ranging from $525.00 to $525.83. 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 June 22, 2017 at each separate price.
(3)	Represents volume-weighted average price of sales of 274 shares of Company stock on June 22, 2017 at prices ranging from $531.05 to $531.85. 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 June 22, 2017 at each separate price.
(4)	Represents volume-weighted average price of sales of 200 shares of Company stock on June 22, 2017 at prices ranging from $532.18 to $532.35. 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 June 22, 2017 at each separate price.
(5)	Represents volume-weighted average price of sales of 200 shares of Company stock on June 22, 2017 at prices ranging from $533.17 to $533.78. 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 June 22, 2017 at each separate price.
(6)	Represents volume-weighted average price of sales of 200 shares of Company stock on June 22, 2017 at prices ranging from $534.16 to $534.85. 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 June 22, 2017 at each separate price.
(7)	Represents volume-weighted average price of sales of 400 shares of Company stock on June 22, 2017 at prices ranging from $536.15 to $536.93. 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 June 22, 2017 at each separate price.
(8)	The stock option award vests in four equal annual installments, commencing one year after the date of grant.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Aberman Michael S 777 OLD SAW MILL RIVER ROAD TARRYTOWN, NY 10591			SVP Strategy Investor Relation

Signatures
/s/**Michael S. Aberman		6/23/2017
** Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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