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

Reporting relationship: SVP Controller
Issuer ticker: REGN
Reported as of: 09 Feb 2026
Net transaction value: -$1,093,058
SEC form: 4
Accepted by SEC: 11 Feb 2026, 16:03:58 UTC
Prior SEC filing: 09 Dec 2025
Source filing: View source filing
Reporting owner signature: /s/ Jason Pitofsky

Key filing fact

Jason Pitofsky filed Form 4 for REGENERON PHARMACEUTICALS, INC. (REGN) on 11 Feb 2026.

Key facts

This page summarizes Jason Pitofsky's Form 4 filing for REGENERON PHARMACEUTICALS, INC. (REGN).
13 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 11 Feb 2026, 16:03.

Change

Previous filing in this sequence was filed on 09 Dec 2025.
Current net transaction value: -$1,093,058.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002009236 Primary reporting owner

Pitofsky Jason

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

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

REGN transaction

Common Stock

Options Exercise

Transaction value: $492,000
Shares: +1,000
Change %: +19%
Price: $492.00
Shares after: 6,308
Date: 09 Feb 2026
Ownership: Direct
Footnotes: F1

REGN transaction

Common Stock

Sale

Transaction value: $15,519
Shares: -20
Change %: -0.32%
Price: $775.95
Shares after: 6,288
Date: 09 Feb 2026
Ownership: Direct
Footnotes: F1

REGN transaction

Common Stock

Sale

Transaction value: $404,520
Shares: -521
Change %: -8.3%
Price: $776.43
Shares after: 5,767
Date: 09 Feb 2026
Ownership: Direct
Footnotes: F1, F2

REGN transaction

Common Stock

Sale

Transaction value: $304,006
Shares: -391
Change %: -6.8%
Price: $777.51
Shares after: 5,376
Date: 09 Feb 2026
Ownership: Direct
Footnotes: F1, F3

REGN transaction

Common Stock

Sale

Transaction value: $438,211
Shares: -563
Change %: -10%
Price: $778.35
Shares after: 4,813
Date: 09 Feb 2026
Ownership: Direct
Footnotes: F1, F4

REGN transaction

Common Stock

Sale

Transaction value: $159,810
Shares: -205
Change %: -4.3%
Price: $779.56
Shares after: 4,608
Date: 09 Feb 2026
Ownership: Direct
Footnotes: F1, F5

REGN transaction

Common Stock

Sale

Transaction value: $58,504
Shares: -75
Change %: -1.6%
Price: $780.06
Shares after: 4,533
Date: 09 Feb 2026
Ownership: Direct
Footnotes: F1, F6

REGN transaction

Common Stock

Sale

Transaction value: $20,316
Shares: -26
Change %: -0.57%
Price: $781.37
Shares after: 4,507
Date: 09 Feb 2026
Ownership: Direct
Footnotes: F1, F7

REGN transaction

Common Stock

Sale

Transaction value: $28,959
Shares: -37
Change %: -0.82%
Price: $782.67
Shares after: 4,470
Date: 09 Feb 2026
Ownership: Direct
Footnotes: F1, F8

REGN transaction

Common Stock

Sale

Transaction value: $112,785
Shares: -144
Change %: -3.2%
Price: $783.23
Shares after: 4,326
Date: 09 Feb 2026
Ownership: Direct
Footnotes: F1, F9

REGN transaction

Common Stock

Sale

Transaction value: $785
Shares: -1
Change %: -0.02%
Price: $784.66
Shares after: 4,325
Date: 09 Feb 2026
Ownership: Direct
Footnotes: F1

REGN transaction

Common Stock

Sale

Transaction value: $41,643
Shares: -53
Change %: -1.2%
Price: $785.72
Shares after: 4,272
Date: 09 Feb 2026
Ownership: Direct
Footnotes: F1, F10

REGN holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 31
Date: 09 Feb 2026
Ownership: By 401(k) Plan

REGN holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 179
Date: 09 Feb 2026
Ownership: by Spouse

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

REGN transaction Derivative

Non-Qualified Stock Option (right to buy)

Options Exercise

Transaction value: $0
Shares: -1,000
Change %: -52%
Price: $0.000000
Shares after: 905
Date: 09 Feb 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,000
Exercise price: $492.00
Footnotes: F1, F11

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 11 footnotes

Footnote F1

Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on November 10, 2025.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote F11

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