MURPHY ANDREW J (EVP Research) sold 8.0% of their position (4.15K shares) of REGENERON PHARMACEUTICALS, INC. on the open market

Open‑market sale worth $3.20M — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 27 sales

MURPHY ANDREW J

Filed: 10/15/2026ACC: 0001796226-26-000002

InsiderMURPHY ANDREW JCIK 1796226

→

IssuerREGENERON PHARMACEUTICALS, INC.CIK 872589

Officer· EVP Research

Since Dec 2019

-17K

Net shares

Net seller

$12.90M

Total sold

Open market trades

0B · 27S

Total transactions

17K acquired · 34K disposed

Non-Derivative Transactions29

Common Stock

Direct

M · Option Exercise

+17K

Price / share

$381.92

Trade value

$6.49M

% of position

35.5%

10/13/2026

47.83K→64.83K

Common Stock

Direct

F · Tax Withholding

−12.85K

Price / share

$754.58

Trade value

$9.70M

% of position

19.8%

10/13/2026

64.83K→51.98K

Common Stock

Direct

S · Sale

−6.00

Price / share

$753.76

Trade value

$4.52K

% of position

0.0%

10/14/2026

51.98K→51.97K

Common Stock

Direct

S · Sale

−35.00

Price / share

$755.91

Trade value

$26.46K

% of position

0.1%

10/14/2026

51.97K→51.94K

Common Stock

Direct

S · Sale

−16.00

Price / share

$757.68

Trade value

$12.12K

% of position

0.0%

10/14/2026

51.94K→51.92K

Common Stock

Direct

S · Sale

−24.00

Price / share

$758.16

Trade value

$18.20K

% of position

0.0%

10/14/2026

51.92K→51.90K

Common Stock

Direct

S · Sale

−14.00

Price / share

$759.96

Trade value

$10.64K

% of position

0.0%

10/14/2026

51.90K→51.88K

Common Stock

Direct

S · Sale

−74.00

Price / share

$760.65

Trade value

$56.29K

% of position

0.1%

10/14/2026

51.88K→51.81K

Common Stock

Direct

S · Sale

−27.00

Price / share

$761.36

Trade value

$20.56K

% of position

0.1%

10/14/2026

51.81K→51.78K

Common Stock

Direct

S · Sale

−55.00

Price / share

$762.57

Trade value

$41.94K

% of position

0.1%

10/14/2026

51.78K→51.73K

Common Stock

Direct

S · Sale

−25.00

Price / share

$763.76

Trade value

$19.09K

% of position

0.0%

10/14/2026

51.73K→51.70K

Common Stock

Direct

S · Sale

−219.00

Price / share

$764.40

Trade value

$167.40K

% of position

0.4%

10/14/2026

51.70K→51.48K

Common Stock

Direct

S · Sale

−271.00

Price / share

$765.39

Trade value

$207.42K

% of position

0.5%

10/14/2026

51.48K→51.21K

Common Stock

Direct

S · Sale

−279.00

Price / share

$766.47

Trade value

$213.85K

% of position

0.5%

10/14/2026

51.21K→50.94K

Common Stock

Direct

S · Sale

−192.00

Price / share

$767.39

Trade value

$147.34K

% of position

0.4%

10/14/2026

50.94K→50.74K

Common Stock

Direct

S · Sale

−105.00

Price / share

$768.33

Trade value

$80.67K

% of position

0.2%

10/14/2026

50.74K→50.64K

Common Stock

Direct

S · Sale

−127.00

Price / share

$769.30

Trade value

$97.70K

% of position

0.3%

10/14/2026

50.64K→50.51K

Common Stock

Direct

S · Sale

−12.00

Price / share

$770.20

Trade value

$9.24K

% of position

0.0%

10/14/2026

50.51K→50.50K

Common Stock

Direct

S · Sale

−283.00

Price / share

$771.56

Trade value

$218.35K

% of position

0.6%

10/14/2026

50.50K→50.22K

Common Stock

Direct

S · Sale

−211.00

Price / share

$772.56

Trade value

$163.01K

% of position

0.4%

10/14/2026

50.22K→50.01K

Common Stock

Direct

S · Sale

−224.00

Price / share

$773.40

Trade value

$173.24K

% of position

0.4%

10/14/2026

50.01K→49.78K

Common Stock

Direct

S · Sale

−121.00

Price / share

$774.48

Trade value

$93.71K

% of position

0.2%

10/14/2026

49.78K→49.66K

Common Stock

Direct

S · Sale

−376.00

Price / share

$775.46

Trade value

$291.57K

% of position

0.8%

10/14/2026

49.66K→49.28K

Common Stock

Direct

S · Sale

−66.00

Price / share

$776.31

Trade value

$51.24K

% of position

0.1%

10/14/2026

49.28K→49.22K

Common Stock

Direct

S · Sale

−38.00

Price / share

$777.76

Trade value

$29.55K

% of position

0.1%

10/14/2026

49.22K→49.18K

Common Stock

Direct

S · Sale

−454.00

Price / share

$778.64

Trade value

$353.50K

% of position

0.9%

10/14/2026

49.18K→48.73K

Common Stock

Direct

S · Sale

−380.00

Price / share

$779.59

Trade value

$296.24K

% of position

0.8%

10/14/2026

48.73K→48.35K

Common Stock

Direct

S · Sale

−463.00

Price / share

$780.63

Trade value

$361.43K

% of position

1.0%

10/14/2026

48.35K→47.88K

Common Stock

Direct

S · Sale

−50.00

Price / share

$781.47

Trade value

$39.07K

% of position

0.1%

10/14/2026

47.88K→47.83K

Total

Net shares

+0.00

Net value

-$6.41M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	10/13/2026	M · Option Exercise	+17K	$381.92	$6.49M	35.5%	47.83K	64.83K
Common Stock Direct	10/13/2026	F · Tax Withholding	−12.85K	$754.58	$9.70M	19.8%	64.83K	51.98K
Common Stock Direct	10/14/2026	S · Sale	−6.00	$753.76	$4.52K	0.0%	51.98K	51.97K
Common Stock Direct	10/14/2026	S · Sale	−35.00	$755.91	$26.46K	0.1%	51.97K	51.94K
Common Stock Direct	10/14/2026	S · Sale	−16.00	$757.68	$12.12K	0.0%	51.94K	51.92K
Common Stock Direct	10/14/2026	S · Sale	−24.00	$758.16	$18.20K	0.0%	51.92K	51.90K
Common Stock Direct	10/14/2026	S · Sale	−14.00	$759.96	$10.64K	0.0%	51.90K	51.88K
Common Stock Direct	10/14/2026	S · Sale	−74.00	$760.65	$56.29K	0.1%	51.88K	51.81K
Common Stock Direct	10/14/2026	S · Sale	−27.00	$761.36	$20.56K	0.1%	51.81K	51.78K
Common Stock Direct	10/14/2026	S · Sale	−55.00	$762.57	$41.94K	0.1%	51.78K	51.73K
Common Stock Direct	10/14/2026	S · Sale	−25.00	$763.76	$19.09K	0.0%	51.73K	51.70K
Common Stock Direct	10/14/2026	S · Sale	−219.00	$764.40	$167.40K	0.4%	51.70K	51.48K
Common Stock Direct	10/14/2026	S · Sale	−271.00	$765.39	$207.42K	0.5%	51.48K	51.21K
Common Stock Direct	10/14/2026	S · Sale	−279.00	$766.47	$213.85K	0.5%	51.21K	50.94K
Common Stock Direct	10/14/2026	S · Sale	−192.00	$767.39	$147.34K	0.4%	50.94K	50.74K
Common Stock Direct	10/14/2026	S · Sale	−105.00	$768.33	$80.67K	0.2%	50.74K	50.64K
Common Stock Direct	10/14/2026	S · Sale	−127.00	$769.30	$97.70K	0.3%	50.64K	50.51K
Common Stock Direct	10/14/2026	S · Sale	−12.00	$770.20	$9.24K	0.0%	50.51K	50.50K
Common Stock Direct	10/14/2026	S · Sale	−283.00	$771.56	$218.35K	0.6%	50.50K	50.22K
Common Stock Direct	10/14/2026	S · Sale	−211.00	$772.56	$163.01K	0.4%	50.22K	50.01K
Common Stock Direct	10/14/2026	S · Sale	−224.00	$773.40	$173.24K	0.4%	50.01K	49.78K
Common Stock Direct	10/14/2026	S · Sale	−121.00	$774.48	$93.71K	0.2%	49.78K	49.66K
Common Stock Direct	10/14/2026	S · Sale	−376.00	$775.46	$291.57K	0.8%	49.66K	49.28K
Common Stock Direct	10/14/2026	S · Sale	−66.00	$776.31	$51.24K	0.1%	49.28K	49.22K
Common Stock Direct	10/14/2026	S · Sale	−38.00	$777.76	$29.55K	0.1%	49.22K	49.18K
Common Stock Direct	10/14/2026	S · Sale	−454.00	$778.64	$353.50K	0.9%	49.18K	48.73K
Common Stock Direct	10/14/2026	S · Sale	−380.00	$779.59	$296.24K	0.8%	48.73K	48.35K
Common Stock Direct	10/14/2026	S · Sale	−463.00	$780.63	$361.43K	1.0%	48.35K	47.88K
Common Stock Direct	10/14/2026	S · Sale	−50.00	$781.47	$39.07K	0.1%	47.88K	47.83K
Total			+0.00		-$6.41M

Derivative Transactions1

Non-Qualified Stock Option (right to buy)

Direct

M · Option Exercise

Converts to

Common Stock

17K shares

−17K

Strike price

381.92

Held after

17K

Exercisable

—

10/13/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Non-Qualified Stock Option (right to buy) Direct	Common Stock17K shares	10/13/2026	M · Option Exercise	−17K	381.92	—	17K

Non-Derivative Holdings (Post-Transaction)1

Common Stock

Indirect

Shares owned4.41K

Total

4.41K indirect4.41K

Security Title	Shares Owned	Ownership Type
Common Stock	4.41K	Indirect
Total	4.41K	4.41K indirect

Derivative Holdings (Post-Transaction)0

No derivative holdings reported