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Regeneron controller Pitofsky sells 4,062 shares

The sales included 179 shares held indirectly by the SVP Controller’s spouse, whose reported position was zero after the transaction.

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Form Type
4

Rhea-AI Filing Summary

Regeneron Pharmaceuticals, Inc. (REGN) reports that SVP Controller Jason Pitofsky exercised non-qualified stock options on November 4, 2026, covering 905 shares at $492.00, 1,478 at $644.54 and 1,500 at $726.53; the report lists acquisitions of the corresponding common shares. It also records sales of 4,062 common shares at reported per-share prices ranging from $939.57 to $950.76, including 179 shares held indirectly by his spouse; the spouse-held position was zero afterward.

Insider Pitofsky Jason
Role SVP Controller
Sold 4,062 shs ($3.83M)
Approx. gross sale proceeds $3.83M
Approx. exercise cost $2.49M
Type Security Shares Price Value
Exercise Non-Qualified Stock Option (right to buy) F8 905 $0.00 $0.00
Exercise Non-Qualified Stock Option (right to buy) F8 1,478 $0.00 $0.00
Exercise Non-Qualified Stock Option (right to buy) F8 1,500 $0.00 $0.00
Exercise Common Stock 1,500 $726.53 $1.09M
Exercise Common Stock 1,478 $644.54 $953K
Exercise Common Stock 905 $492.00 $445K
Sale Common Stock F1 439 $939.57 $412K
Sale Common Stock F2 575 $940.46 $541K
Sale Common Stock F3 982 $941.58 $925K
Sale Common Stock F4 1,215 $942.31 $1.14M
Sale Common Stock F5 529 $943.53 $499K
Sale Common Stock F6 108 $944.22 $102K
Sale Common Stock 35 $945.61 $33K
Sale Common Stock F7 179 $950.76 $170K
Holding Common Stock -- -- --
Holdings After Transaction: Non-Qualified Stock Option (right to buy) — 2,978 contracts (Direct); Common Stock — 4,272 shares (Direct); Common Stock — 0 shares (Indirect, by Spouse); Common Stock — 48 shares (Indirect, By 401(k) Plan)
Footnotes (8)
  1. F1. Represents volume-weighted average price of sales of 439 shares of Company stock on November 4, 2026 at prices ranging from $939.10 to $939.71. 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 November 4, 2026 at each separate price.
  2. F2. Represents volume-weighted average price of sales of 575 shares of Company stock on November 4, 2026 at prices ranging from $940.15 to $940.88. 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 November 4, 2026 at each separate price.
  3. F3. Represents volume-weighted average price of sales of 982 shares of Company stock on November 4, 2026 at prices ranging from $941.08 to $941.92. 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 November 4, 2026 at each separate price.
  4. F4. Represents volume-weighted average price of sales of 1,215 shares of Company stock on November 4, 2026 at prices ranging from $942.00 to $942.92. 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 November 4, 2026 at each separate price.
  5. F5. Represents volume-weighted average price of sales of 529 shares of Company stock on November 4, 2026 at prices ranging from $943.00 to $943.88. 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 November 4, 2026 at each separate price.
  6. F6. Represents volume-weighted average price of sales of 108 shares of Company stock on November 4, 2026 at prices ranging from $944.00 to $944.34. 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 November 4, 2026 at each separate price.
  7. F7. Represents volume-weighted average price of sales of 179 shares of Company stock on November 4, 2026 at prices ranging from $950.45 to $950.78. 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 November 4, 2026 at each separate price.
  8. F8. The stock option award vested in four equal annual installments, commencing one year after the date of grant.
Options exercised 905 shares at $492.00 per share November 4, 2026
Options exercised 1,478 shares at $644.54 per share November 4, 2026
Options exercised 1,500 shares at $726.53 per share November 4, 2026
Common shares sold 4,062 shares November 4, 2026
Spouse-held shares sold 179 shares at $950.76 per share Weighted average sale price on November 4, 2026
Spouse-held common-stock position after sale 0 shares November 4, 2026
401(k) Plan common-stock holding 48 shares Indirect holding reported on November 4, 2026
Non-Qualified Stock Option financial
"Non-Qualified Stock Option (right to buy)"
A non-qualified stock option (NSO) is a contract that lets an employee or service provider buy company shares at a fixed price for a set period, like a voucher to purchase stock later at today’s price. It matters to investors because exercising NSOs creates ordinary income for the holder and can increase share count, affecting a company’s earnings and ownership mix; think of it as a future sale that can dilute existing shareholders and has immediate tax consequences for the recipient.
volume-weighted average price financial
"volume-weighted average price of sales of 439 shares"
Volume-weighted average price (VWAP) is the average price of a stock over a specific time period where each trade is weighted by the number of shares traded, so larger trades influence the average more than small ones. Investors and traders use VWAP as a reference point to judge whether trades are happening at relatively good or poor prices—like checking the average price paid for an item at a market where bulk purchases count more than single-item buys.
401(k) Plan financial
"By 401(k) Plan"
A 401(k) plan is a workplace retirement account that lets employees set aside part of their pay into a tax-advantaged savings pot, often with employers adding matching contributions — like a workplace piggy bank for future income. It matters to investors because the amount people save and how employers fund these plans influence consumer spending, corporate payroll costs and the flow of money into financial markets, which can affect stock prices and company valuations.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many REGN options did Jason Pitofsky exercise, and at what prices?

On November 4, 2026, SVP Controller Jason Pitofsky exercised options covering 905 shares at $492.00, 1,478 shares at $644.54 and 1,500 shares at $726.53. The report lists acquisitions of the corresponding numbers of common shares.

How many REGN shares were sold?

The transactions list sales of 4,062 REGN common shares on November 4, 2026, including 179 shares held indirectly by Jason Pitofsky’s spouse. The spouse-held position was reported as zero following that sale.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a 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). See Instruction 10.
1. Name and Address of Reporting Person*
Pitofsky Jason

(Last)(First)(Middle)
777 OLD SAW MILL RIVER ROAD

(Street)
TARRYTOWN NEW YORK 10591

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
REGENERON PHARMACEUTICALS, INC. [ REGN ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
SVP Controller
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
11/04/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction 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)
CodeVAmount(A) or (D)Price
Common Stock11/04/2026M1,500A$726.535,772D
Common Stock11/04/2026M1,478A$644.547,250D
Common Stock11/04/2026M905A$4928,155D
Common Stock11/04/2026S439D$939.57(1)7,716D
Common Stock11/04/2026S575D$940.46(2)7,141D
Common Stock11/04/2026S982D$941.58(3)6,159D
Common Stock11/04/2026S1,215D$942.31(4)4,944D
Common Stock11/04/2026S529D$943.53(5)4,415D
Common Stock11/04/2026S108D$944.22(6)4,307D
Common Stock11/04/2026S35D$945.614,272D
Common Stock11/04/2026S179D$950.76(7)0Iby Spouse
Common Stock48IBy 401(k) Plan
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction 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 (Month/Day/Year)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: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Non-Qualified Stock Option (right to buy)$49211/04/2026M905 (8)12/09/2030Common Stock905$0.00D
Non-Qualified Stock Option (right to buy)$644.5411/04/2026M1,478 (8)12/08/2031Common Stock1,478$0.0500D
Non-Qualified Stock Option (right to buy)$726.5311/04/2026M1,500 (8)12/16/2032Common Stock1,500$0.02,478D
Explanation of Responses:
1. Represents volume-weighted average price of sales of 439 shares of Company stock on November 4, 2026 at prices ranging from $939.10 to $939.71. 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 November 4, 2026 at each separate price.
2. Represents volume-weighted average price of sales of 575 shares of Company stock on November 4, 2026 at prices ranging from $940.15 to $940.88. 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 November 4, 2026 at each separate price.
3. Represents volume-weighted average price of sales of 982 shares of Company stock on November 4, 2026 at prices ranging from $941.08 to $941.92. 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 November 4, 2026 at each separate price.
4. Represents volume-weighted average price of sales of 1,215 shares of Company stock on November 4, 2026 at prices ranging from $942.00 to $942.92. 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 November 4, 2026 at each separate price.
5. Represents volume-weighted average price of sales of 529 shares of Company stock on November 4, 2026 at prices ranging from $943.00 to $943.88. 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 November 4, 2026 at each separate price.
6. Represents volume-weighted average price of sales of 108 shares of Company stock on November 4, 2026 at prices ranging from $944.00 to $944.34. 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 November 4, 2026 at each separate price.
7. Represents volume-weighted average price of sales of 179 shares of Company stock on November 4, 2026 at prices ranging from $950.45 to $950.78. 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 November 4, 2026 at each separate price.
8. The stock option award vested in four equal annual installments, commencing one year after the date of grant.
/s/ Jason Pitofsky11/06/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

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