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Regeneron Pharmaceuticals, Inc. planned insider sales

In the last twelve months insiders at Regeneron Pharmaceuticals, Inc. filed 21 Form 144 notices of planned sales, 63,215 shares worth $58.1 million at the time of filing, from 13 sellers. The latest, filed 4 November 2026: Jason Pitofsky (officer), 180 shares worth $175,205, planned for around 4 November 2026 through J.P. Morgan Securities LLC.

FiledSellerRelationshipSharesValuePlanned saleSold, per Form 4BrokerHow acquiredFiling
4 November 2026Jason PitofskyOfficer180$175,2054 November 2026None on Form 4 yetJ.P. Morgan Securities LLCInheritedForm 144
4 November 2026Jason PitofskyOfficer3,883$3.8 million4 November 20264,062 shares from 4 November 2026UBS Financial Services Incstock option grantForm 144
3 November 2026Huda ZoghbiDirector7,439$7.2 million3 November 20267,439 shares from 3 November 2026UBS Financial Services Incstock option exerciseForm 144
2 November 2026Joseph LaRosaOfficer4,466$4.3 million2 November 20264,466 shares from 2 November 2026UBS Financial Services IncStock Option ExerciseForm 144
2 November 2026Christine PoonDirector7,830$7.5 million2 November 20267,830 shares from 2 November 2026Goldman Sachs & Co. LLCStock OptionsForm 144
2 November 2026George L. SingDirector21,129$20.4 million2 November 202621,129 shares from 2 November 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Options Under a Registered Plan; Previously Exercised OptionsForm 144
30 October 2026Guarini KathrynDirector400$360,00030 October 2026400 shares from 30 October 2026UBS Financial Services, Inc.Exercise of stock optionForm 144
30 October 2026McCourt MarionOfficer1,132$984,19530 October 20261,132 shares from 30 October 2026UBS Financial Services Inc.RSA VestingForm 144
30 October 2026Michael S BrownDirector1,929$1.6 million30 October 20261,929 shares from 30 October 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
14 October 2026Murphy Andrew JOfficer4,147$3.2 million14 October 20264,147 shares from 14 October 2026UBS Financial Services, Inc.Exercise of Stock OptionsForm 144
3 September 2026McCourt MarionOfficer1,131$969,2673 September 20262,346 shares from 2 September 2026UBS Financial Services Inc.RSA VestingForm 144
2 September 2026Guarini KathrynDirector400$340,0002 September 2026400 shares from 2 September 2026UBS Financial Services, Inc.Exercise of stock optionForm 144
2 September 2026McCourt MarionOfficer1,215$1.0 million2 September 2026None on Form 4 yetUBS Financial Services Inc.RSA VestingForm 144
10 August 2026Guarini KathrynBoard member400$320,00010 August 2026400 shares from 10 August 2026UBS Financial Services, Inc.Exercise of stock optionForm 144
10 August 2026Zoghbi Huda YDirector800$640,00010 August 2026800 shares from 10 August 2026UBS Financial Services, Inc.Exercise of stock optionsForm 144
2 July 2026Arthur F. RyanDirector400$249,8882 July 2026200 shares from 2 July 2026J.P. Morgan Securities LLCCompensationForm 144
19 February 2026Zoghbi Huda YDirector1,638$1.3 million19 February 20261,638 shares from 19 February 2026UBS Financial Services, Inc.Exercise of stock optionsForm 144
9 February 2026Arthur F. RyanDirector400$314,2049 February 2026400 shares from 9 February 2026J.P. Morgan Securities LLCCompensationForm 144
9 February 2026Pitofsky JasonOfficer2,036$1.6 million9 February 20262,036 shares from 9 February 2026UBS Financial Services, Inc.Exercise of Stock Options; Restricted Stock AwardForm 144
7 January 2026Bassler Bonnie LDirector1,500$1.2 million7 January 20261,500 shares from 7 January 2026RBC CAPITAL MARKETS LLCOPTION EXERCISEForm 144
20 November 2025Bassler Bonnie LDirector760$570,00020 November 2025760 shares from 20 November 2025RBC CAPITAL MARKETS LLCOPTION EXERCISEForm 144
A Form 144 is the notice an insider files with the SEC before selling restricted or control shares over the Rule 144 thresholds; it says what may be sold, not what was.
Read moreValue is the filer's own aggregate market value. Sold, per Form 4: the same seller's open-market sales on Form 4 from the notice's date to 90 days after, added up, as they appear on the insiders page; a holder who files no Form 4, such as some large holders, never shows one. What is a Form 144?