=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-02-09
10b5-1 Pre-arranged Plan: Yes
--- Issuer ---
Name: REGENERON PHARMACEUTICALS, INC. (REGN)
CIK: 0000872589
--- Reporting Owner ---
Name: Pitofsky Jason
CIK: 0002009236
Role: Officer (SVP Controller)
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Common Stock
Date: 2026-02-09 | Code: M (Exercise of derivative)
Shares: +1,000 | Price: $492.00
Total Value: $492,000.00
Shares Owned After: 6,308 | Ownership: D (Direct)
Footnotes:
[F1] Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on November 10, 2025.
[Transaction #2]
Security: Common Stock
Date: 2026-02-09 | Code: S (Open market sale)
Shares: -20 | Price: $775.95
Total Value: $15,519.00
Shares Owned After: 6,288 | Ownership: D (Direct)
Footnotes:
[F1] Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on November 10, 2025.
[Transaction #3]
Security: Common Stock
Date: 2026-02-09 | Code: S (Open market sale)
Shares: -521 | Price: $776.43
Total Value: $404,520.03
Shares Owned After: 5,767 | Ownership: D (Direct)
Footnotes:
[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.
[Transaction #4]
Security: Common Stock
Date: 2026-02-09 | Code: S (Open market sale)
Shares: -391 | Price: $777.51
Total Value: $304,006.41
Shares Owned After: 5,376 | Ownership: D (Direct)
Footnotes:
[F1] Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on November 10, 2025.
[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.
[Transaction #5]
Security: Common Stock
Date: 2026-02-09 | Code: S (Open market sale)
Shares: -563 | Price: $778.35
Total Value: $438,211.05
Shares Owned After: 4,813 | Ownership: D (Direct)
Footnotes:
[F1] Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on November 10, 2025.
[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.
[Transaction #6]
Security: Common Stock
Date: 2026-02-09 | Code: S (Open market sale)
Shares: -205 | Price: $779.56
Total Value: $159,809.80
Shares Owned After: 4,608 | Ownership: D (Direct)
Footnotes:
[F1] Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on November 10, 2025.
[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.
[Transaction #7]
Security: Common Stock
Date: 2026-02-09 | Code: S (Open market sale)
Shares: -75 | Price: $780.06
Total Value: $58,504.50
Shares Owned After: 4,533 | Ownership: D (Direct)
Footnotes:
[F1] Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on November 10, 2025.
[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.
[Transaction #8]
Security: Common Stock
Date: 2026-02-09 | Code: S (Open market sale)
Shares: -26 | Price: $781.37
Total Value: $20,315.62
Shares Owned After: 4,507 | Ownership: D (Direct)
Footnotes:
[F1] Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on November 10, 2025.
[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.
[Transaction #9]
Security: Common Stock
Date: 2026-02-09 | Code: S (Open market sale)
Shares: -37 | Price: $782.67
Total Value: $28,958.79
Shares Owned After: 4,470 | Ownership: D (Direct)
Footnotes:
[F1] Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on November 10, 2025.
[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.
[Transaction #10]
Security: Common Stock
Date: 2026-02-09 | Code: S (Open market sale)
Shares: -144 | Price: $783.23
Total Value: $112,785.12
Shares Owned After: 4,326 | Ownership: D (Direct)
Footnotes:
[F1] Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on November 10, 2025.
[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.
[Transaction #11]
Security: Common Stock
Date: 2026-02-09 | Code: S (Open market sale)
Shares: -1 | Price: $784.66
Total Value: $784.66
Shares Owned After: 4,325 | Ownership: D (Direct)
Footnotes:
[F1] Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on November 10, 2025.
[Transaction #12]
Security: Common Stock
Date: 2026-02-09 | Code: S (Open market sale)
Shares: -53 | Price: $785.72
Total Value: $41,643.16
Shares Owned After: 4,272 | Ownership: D (Direct)
Footnotes:
[F1] Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on November 10, 2025.
[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.
--- Derivative Transactions ---
[Transaction #1]
Security: Non-Qualified Stock Option (right to buy)
Date: 2026-02-09 | Code: M (Exercise of derivative)
Shares: -1,000 | Price: $0.00
Exercisable: N/A | Expires: 2030-12-09
Shares Owned After: 905 | Ownership: D (Direct)
Footnotes:
[F1] Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on November 10, 2025.
[F11] The stock option award vested in four equal annual installments, commencing one year after the date of grant.
--- Holdings ---
[Holding #1]
Security: Common Stock
Ownership: I (Indirect)
[Holding #2]
Security: Common Stock
Ownership: I (Indirect)
--- Footnotes (Complete Index) ---
F1: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on November 10, 2025.
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.
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.
--- Signature ---
/s/ /s/ Jason Pitofsky (2026-02-11)
