SCHLEIFER LEONARD S 4

4 · REGENERON PHARMACEUTICALS, INC. · Filed May 15, 2024

Insider Transaction Report

Form 4

Period: 2024-05-13

REGENERON PHARMACEUTICALS, INC.REGN

SCHLEIFER LEONARD S

DirectorBd. Co-Chair, President & CEO

Transactions

Exercise/Conversion
Common Stock
[F1]
2024-05-13$399.66/sh+203,204$81,212,511→ 577,633 total
Tax Payment
Common Stock
[F1]
2024-05-13$976.79/sh−144,433$141,080,710→ 433,200 total
Sale
Common Stock
[F1][F2]
2024-05-14$979.16/sh−22,698$22,224,974→ 410,502 total
Sale
Common Stock
[F1][F3]
2024-05-14$980.10/sh−2,302$2,256,190→ 408,200 total
Sale
Common Stock
[F1][F4]
2024-05-15$979.05/sh−7,864$7,699,249→ 400,336 total
Sale
Common Stock
[F1][F5]
2024-05-15$980.64/sh−295$289,289→ 400,041 total
Sale
Common Stock
[F1][F6]
2024-05-15$981.50/sh−1,081$1,061,002→ 398,960 total
Sale
Common Stock
[F1][F7]
2024-05-15$982.66/sh−235$230,925→ 398,725 total
Sale
Common Stock
[F1][F8]
2024-05-15$983.91/sh−250$245,978→ 398,475 total
Sale
Common Stock
[F1][F9]
2024-05-15$984.00/sh−305$300,120→ 398,170 total
Sale
Common Stock
[F1][F10]
2024-05-15$985.72/sh−281$276,987→ 397,889 total
Sale
Common Stock
[F1][F11]
2024-05-15$986.57/sh−103$101,617→ 397,786 total
Sale
Common Stock
[F1][F12]
2024-05-15$987.46/sh−228$225,141→ 397,558 total
Sale
Common Stock
[F1][F13]
2024-05-15$988.76/sh−299$295,639→ 397,259 total
Exercise/Conversion
Non-Qualified Stock Option (right to buy)
[F1][F14]
2024-05-13−203,204→ 0 total
Exercise: $399.66Exp: 2024-12-16→ Common Stock (203,204 underlying)

Holdings

Common Stock
(indirect: 2023 GRAT)
250,000
Common Stock
(indirect: By 401(k))
5,932
Common Stock
(indirect: By Trust)
64,985

Footnotes (14)

[F1]Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on February 5, 2024.
[F10]Represents volume-weighted average price of sales of 281 shares of Company stock on May 15, 2024 at prices ranging from $985.13 to $985.84. 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 May 15, 2024 at each separate price.
[F11]Represents volume-weighted average price of sales of 103 shares of Company stock on May 15, 2024 at prices ranging from $986.37 to $986.96. 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 May 15, 2024 at each separate price.
[F12]Represents volume-weighted average price of sales of 228 shares of Company stock on May 15, 2024 at prices ranging from $987.31 to $987.63. 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 May 15, 2024 at each separate price.
[F13]Represents volume-weighted average price of sales of 299 shares of Company stock on May 15, 2024 at prices ranging from $988.00 to $988.97. 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 May 15, 2024 at each separate price.
[F14]The stock option award vests in four equal annual installments, commencing one year after the date of grant.
[F2]Represents volume-weighted average price of sales of 22,698 shares of Company stock on May 14, 2024 at prices ranging from $979.00 to $979.99. 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 May 14, 2024 at each separate price.
[F3]Represents volume-weighted average price of sales of 2,302 shares of Company stock on May 14, 2024 at prices ranging from $980.00 to $980.99. 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 May 14, 2024 at each separate price.
[F4]Represents volume-weighted average price of sales of 7,864 shares of Company stock on May 15, 2024 at prices ranging from $979.00 to $979.50. 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 May 15, 2024 at each separate price.
[F5]Represents volume-weighted average price of sales of 295 shares of Company stock on May 15, 2024 at prices ranging from $980.17 to $980.98. 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 May 15, 2024 at each separate price.
[F6]Represents volume-weighted average price of sales of 1,081 shares of Company stock on May 15, 2024 at prices ranging from $981.09 to $981.90. 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 May 15, 2024 at each separate price.
[F7]Represents volume-weighted average price of sales of 235 shares of Company stock on May 15, 2024 at prices ranging from $982.31 to $982.68. 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 May 15, 2024 at each separate price.
[F8]Represents volume-weighted average price of sales of 250 shares of Company stock on May 15, 2024 at prices ranging from $983.82 to $983.98. 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 May 15, 2024 at each separate price.
[F9]Represents volume-weighted average price of sales of 305 shares of Company stock on May 15, 2024 at prices ranging from $984.00 to $984.02. 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 May 15, 2024 at each separate price.

Signature

/s/**Leonard S. Schleifer|2024-05-15

Documents

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