Key facts
- This page summarizes Andrew J. Murphy's Form 4 filing for REGENERON PHARMACEUTICALS, INC. (REGN).
- 30 reported transactions and 1 derivative row are listed below.
- Accepted by SEC: 15 Oct 2026, 16:02.
Andrew J. Murphy - 13 Oct 2026 Form 4 Insider Report for REGENERON PHARMACEUTICALS, INC. (REGN)
- Reporting relationship
- Co-Chief Scientific Officer
- Issuer ticker
- REGN
- Reported as of
- 13 Oct 2026
- Net transaction value
- -$3,204,376
- SEC form
- 4
- Accepted by SEC
- 15 Oct 2026, 16:02:50 UTC
- Prior SEC filing
- 11 Dec 2025
- Source filing
- View source filing
- Reporting owner signature
- /s/ Andrew Murphy
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Filing notes and source
Key filing fact
Andrew J. Murphy filed Form 4 for REGENERON PHARMACEUTICALS, INC. (REGN) on 15 Oct 2026.
Change
- Previous filing in this sequence was filed on 11 Dec 2025.
- Current net transaction value: -$3,204,376.
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
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001796226
Primary reporting owner
MURPHY ANDREW J
- Relationship
- Co-Chief Scientific Officer
- Address
- 777 OLD SAW MILL RIVER ROAD, TARRYTOWN
- Signature
- /s/ Andrew Murphy
- Signature date
- 15 Oct 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
REGN
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +17,000
- Change %
- +36%
- Price
- $381.92*
- Shares after
- 64,833
- Date
- 13 Oct 2026
- Ownership
- Direct
- Footnotes
- F1
REGN
transaction
Common Stock
Tax liability
- Transaction value
- Shares
- -12,853
- Change %
- -20%
- Price
- $754.58*
- Shares after
- 51,980
- Date
- 13 Oct 2026
- Ownership
- Direct
- Footnotes
- F1
REGN
transaction
Common Stock
Sale
- Transaction value
- -$4,523
- Shares
- -6
- Change %
- -0.01%
- Price
- $753.76
- Shares after
- 51,974
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1
REGN
transaction
Common Stock
Sale
- Transaction value
- -$26,457
- Shares
- -35
- Change %
- -0.07%
- Price
- $755.91
- Shares after
- 51,939
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1
REGN
transaction
Common Stock
Sale
- Transaction value
- -$12,123
- Shares
- -16
- Change %
- -0.03%
- Price
- $757.68
- Shares after
- 51,923
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1
REGN
transaction
Common Stock
Sale
- Transaction value
- -$18,196
- Shares
- -24
- Change %
- -0.05%
- Price
- $758.16
- Shares after
- 51,899
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1
REGN
transaction
Common Stock
Sale
- Transaction value
- -$10,639
- Shares
- -14
- Change %
- -0.03%
- Price
- $759.96
- Shares after
- 51,885
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F2
REGN
transaction
Common Stock
Sale
- Transaction value
- -$56,288
- Shares
- -74
- Change %
- -0.14%
- Price
- $760.65
- Shares after
- 51,811
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F3
REGN
transaction
Common Stock
Sale
- Transaction value
- -$20,557
- Shares
- -27
- Change %
- -0.05%
- Price
- $761.36
- Shares after
- 51,784
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F4
REGN
transaction
Common Stock
Sale
- Transaction value
- -$41,941
- Shares
- -55
- Change %
- -0.11%
- Price
- $762.57
- Shares after
- 51,729
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1
REGN
transaction
Common Stock
Sale
- Transaction value
- -$19,094
- Shares
- -25
- Change %
- -0.05%
- Price
- $763.76
- Shares after
- 51,704
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F5
REGN
transaction
Common Stock
Sale
- Transaction value
- -$167,404
- Shares
- -219
- Change %
- -0.42%
- Price
- $764.40
- Shares after
- 51,485
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F6
REGN
transaction
Common Stock
Sale
- Transaction value
- -$207,421
- Shares
- -271
- Change %
- -0.53%
- Price
- $765.39
- Shares after
- 51,214
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F7
REGN
transaction
Common Stock
Sale
- Transaction value
- -$213,845
- Shares
- -279
- Change %
- -0.54%
- Price
- $766.47
- Shares after
- 50,935
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F8
REGN
transaction
Common Stock
Sale
- Transaction value
- -$147,339
- Shares
- -192
- Change %
- -0.38%
- Price
- $767.39
- Shares after
- 50,743
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F9
REGN
transaction
Common Stock
Sale
- Transaction value
- -$80,675
- Shares
- -105
- Change %
- -0.21%
- Price
- $768.33
- Shares after
- 50,638
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F10
REGN
transaction
Common Stock
Sale
- Transaction value
- -$97,701
- Shares
- -127
- Change %
- -0.25%
- Price
- $769.30
- Shares after
- 50,511
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F11
REGN
transaction
Common Stock
Sale
- Transaction value
- -$9,242
- Shares
- -12
- Change %
- -0.02%
- Price
- $770.20
- Shares after
- 50,499
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1
REGN
transaction
Common Stock
Sale
- Transaction value
- -$218,351
- Shares
- -283
- Change %
- -0.56%
- Price
- $771.56
- Shares after
- 50,216
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F12
REGN
transaction
Common Stock
Sale
- Transaction value
- -$163,010
- Shares
- -211
- Change %
- -0.42%
- Price
- $772.56
- Shares after
- 50,005
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F13
REGN
transaction
Common Stock
Sale
- Transaction value
- -$173,242
- Shares
- -224
- Change %
- -0.45%
- Price
- $773.40
- Shares after
- 49,781
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F14
REGN
transaction
Common Stock
Sale
- Transaction value
- -$93,712
- Shares
- -121
- Change %
- -0.24%
- Price
- $774.48
- Shares after
- 49,660
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F15
REGN
transaction
Common Stock
Sale
- Transaction value
- -$291,573
- Shares
- -376
- Change %
- -0.76%
- Price
- $775.46
- Shares after
- 49,284
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F16
REGN
transaction
Common Stock
Sale
- Transaction value
- -$51,236
- Shares
- -66
- Change %
- -0.13%
- Price
- $776.31
- Shares after
- 49,218
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F17
REGN
transaction
Common Stock
Sale
- Transaction value
- -$29,555
- Shares
- -38
- Change %
- -0.08%
- Price
- $777.76
- Shares after
- 49,180
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F18
REGN
transaction
Common Stock
Sale
- Transaction value
- -$353,503
- Shares
- -454
- Change %
- -0.92%
- Price
- $778.64
- Shares after
- 48,726
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F19
REGN
transaction
Common Stock
Sale
- Transaction value
- -$296,244
- Shares
- -380
- Change %
- -0.78%
- Price
- $779.59
- Shares after
- 48,346
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F20
REGN
transaction
Common Stock
Sale
- Transaction value
- -$361,432
- Shares
- -463
- Change %
- -0.96%
- Price
- $780.63
- Shares after
- 47,883
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F21
REGN
transaction
Common Stock
Sale
- Transaction value
- -$39,074
- Shares
- -50
- Change %
- -0.1%
- Price
- $781.47
- Shares after
- 47,833
- Date
- 14 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F22
REGN
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 4,414
- Date
- 13 Oct 2026
- Ownership
- By 401(k) Plan
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
- Shares
- -17,000
- Change %
- -50%
- Price
- $0.000000*
- Shares after
- 17,000
- Date
- 13 Oct 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 17,000
- Exercise price
- $381.92
- Footnotes
- F1, F23
* 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 23 footnotes
Footnote F1
Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on May 7, 2026.
Footnote F2
Represents volume-weighted average price of sales of 14 shares of Company stock on October 14, 2026 at prices ranging from $759.94 to $759.96. 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 October 14, 2026 at each separate price.
Footnote F3
Represents volume-weighted average price of sales of 74 shares of Company stock on October 14, 2026 at prices ranging from $760.28 to $760.94. 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 October 14, 2026 at each separate price.
Footnote F4
Represents volume-weighted average price of sales of 27 shares of Company stock on October 14, 2026 at prices ranging from $761.01 to $761.68. 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 October 14, 2026 at each separate price.
Footnote F5
Represents volume-weighted average price of sales of 25 shares of Company stock on October 14, 2026 at prices ranging from $763.62 to $763.94. 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 October 14, 2026 at each separate price.
Footnote F6
Represents volume-weighted average price of sales of 219 shares of Company stock on October 14, 2026 at prices ranging from $764.04 to $764.82. 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 October 14, 2026 at each separate price.
Footnote F7
Represents volume-weighted average price of sales of 271 shares of Company stock on October 14, 2026 at prices ranging from $765.11 to $765.78. 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 October 14, 2026 at each separate price.
Footnote F8
Represents volume-weighted average price of sales of 279 shares of Company stock on October 14, 2026 at prices ranging from $766.00 to $766.95. 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 October 14, 2026 at each separate price.
Footnote F9
Represents volume-weighted average price of sales of 192 shares of Company stock on October 14, 2026 at prices ranging from $767.10 to $767.82. 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 October 14, 2026 at each separate price.
Footnote F10
Represents volume-weighted average price of sales of 105 shares of Company stock on October 14, 2026 at prices ranging from $768.15 to $768.59. 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 October 14, 2026 at each separate price.
Footnote F11
Represents volume-weighted average price of sales of 127 shares of Company stock on October 14, 2026 at prices ranging from $769.15 to $769.93. 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 October 14, 2026 at each separate price.
Footnote F12
Represents volume-weighted average price of sales of 283 shares of Company stock on October 14, 2026 at prices ranging from $771.04 to $771.95. 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 October 14, 2026 at each separate price.
Footnote F13
Represents volume-weighted average price of sales of 211 shares of Company stock on October 14, 2026 at prices ranging from $772.06 to $772.74. 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 October 14, 2026 at each separate price.
Footnote F14
Represents volume-weighted average price of sales of 224 shares of Company stock on October 14, 2026 at prices ranging from $773.14 to $773.84. 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 October 14, 2026 at each separate price.
Footnote F15
Represents volume-weighted average price of sales of 121 shares of Company stock on October 14, 2026 at prices ranging from $774.11 to $774.85. 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 October 14, 2026 at each separate price.
Footnote F16
Represents volume-weighted average price of sales of 376 shares of Company stock on October 14, 2026 at prices ranging from $775.14 to $775.92. 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 October 14, 2026 at each separate price.
Footnote F17
Represents volume-weighted average price of sales of 66 shares of Company stock on October 14, 2026 at prices ranging from $776.00 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 October 14, 2026 at each separate price.
Footnote F18
Represents volume-weighted average price of sales of 38 shares of Company stock on October 14, 2026 at prices ranging from $777.51 to $777.92. 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 October 14, 2026 at each separate price.
Footnote F19
Represents volume-weighted average price of sales of 454 shares of Company stock on October 14, 2026 at prices ranging from $778.05 to $778.99. 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 October 14, 2026 at each separate price.
Footnote F20
Represents volume-weighted average price of sales of 380 shares of Company stock on October 14, 2026 at prices ranging from $779.00 to $779.97. 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 October 14, 2026 at each separate price.
Footnote F21
Represents volume-weighted average price of sales of 463 shares of Company stock on October 14, 2026 at prices ranging from $780.06 to $780.89. 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 October 14, 2026 at each separate price.
Footnote F22
Represents volume-weighted average price of sales of 50 shares of Company stock on October 14, 2026 at prices ranging from $781.05 to $781.84. 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 October 14, 2026 at each separate price.
Footnote F23
The stock option award vested in four equal annual installments, commencing one year after the date of grant.