Jason Pitofsky - 09 Feb 2026 Form 4 Insider Report for REGENERON PHARMACEUTICALS, INC. (REGN)

Signature
/s/ Jason Pitofsky
Issuer symbol
REGN
Transactions as of
09 Feb 2026
Net transactions value
-$1,093,058
Form type
4
Filing time
11 Feb 2026, 16:03:58 UTC
Previous filing
09 Dec 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Pitofsky Jason SVP Controller 777 OLD SAW MILL RIVER ROAD, TARRYTOWN /s/ Jason Pitofsky 11 Feb 2026 0002009236

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction REGN Common Stock Options Exercise $492,000 +1,000 +19% $492.00 6,308 09 Feb 2026 Direct F1
transaction REGN Common Stock Sale $15,519 -20 -0.32% $775.95 6,288 09 Feb 2026 Direct F1
transaction REGN Common Stock Sale $404,520 -521 -8.3% $776.43 5,767 09 Feb 2026 Direct F1, F2
transaction REGN Common Stock Sale $304,006 -391 -6.8% $777.51 5,376 09 Feb 2026 Direct F1, F3
transaction REGN Common Stock Sale $438,211 -563 -10% $778.35 4,813 09 Feb 2026 Direct F1, F4
transaction REGN Common Stock Sale $159,810 -205 -4.3% $779.56 4,608 09 Feb 2026 Direct F1, F5
transaction REGN Common Stock Sale $58,504 -75 -1.6% $780.06 4,533 09 Feb 2026 Direct F1, F6
transaction REGN Common Stock Sale $20,316 -26 -0.57% $781.37 4,507 09 Feb 2026 Direct F1, F7
transaction REGN Common Stock Sale $28,959 -37 -0.82% $782.67 4,470 09 Feb 2026 Direct F1, F8
transaction REGN Common Stock Sale $112,785 -144 -3.2% $783.23 4,326 09 Feb 2026 Direct F1, F9
transaction REGN Common Stock Sale $785 -1 -0.02% $784.66 4,325 09 Feb 2026 Direct F1
transaction REGN Common Stock Sale $41,643 -53 -1.2% $785.72 4,272 09 Feb 2026 Direct F1, F10
holding REGN Common Stock 31 09 Feb 2026 By 401(k) Plan
holding REGN Common Stock 179 09 Feb 2026 by Spouse

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction REGN Non-Qualified Stock Option (right to buy) Options Exercise $0 -1,000 -52% $0.000000 905 09 Feb 2026 Common Stock 1,000 $492.00 Direct F1, F11
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

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).

Explanation of Responses:

Id Content
F1 Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on November 10, 2025.
F2 Represents volume-weighted average price of sales of 521 shares of Company stock on February 9, 2026 at prices ranging from $776.05 to $776.98. 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 February 9, 2026 at each separate price.
F3 Represents volume-weighted average price of sales of 391 shares of Company stock on February 9, 2026 at prices ranging from $777.33 to $777.99. 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 February 9, 2026 at each separate price.
F4 Represents volume-weighted average price of sales of 563 shares of Company stock on February 9, 2026 at prices ranging from $778.00 to $778.95. 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 February 9, 2026 at each separate price.
F5 Represents volume-weighted average price of sales of 205 shares of Company stock on February 9, 2026 at prices ranging from $779.19 to $779.96. 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 February 9, 2026 at each separate price.
F6 Represents volume-weighted average price of sales of 75 shares of Company stock on February 9, 2026 at prices ranging from $780.03 to $780.65. 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 February 9, 2026 at each separate price.
F7 Represents volume-weighted average price of sales of 26 shares of Company stock on February 9, 2026 at prices ranging from $781.18 to $781.53. 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 February 9, 2026 at each separate price.
F8 Represents volume-weighted average price of sales of 37 shares of Company stock on February 9, 2026 at prices ranging from $782.22 to $782.83. 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 February 9, 2026 at each separate price.
F9 Represents volume-weighted average price of sales of 144 shares of Company stock on February 9, 2026 at prices ranging from $783.17 to $783.29. 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 February 9, 2026 at each separate price.
F10 Represents volume-weighted average price of sales of 53 shares of Company stock on February 9, 2026 at prices ranging from $785.72 to $785.73. 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 February 9, 2026 at each separate price.
F11 The stock option award vested in four equal annual installments, commencing one year after the date of grant.