Guarini Kathryn
Director
Exercise
Calculated transaction value
$0
400 shares @ $0
Traded
Sep 2, 2026
Filed
Sep 3, 2026
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Regeneron Pharmaceuticals Inc
REGN
ManufacturingChemicals
Transactions reported in official disclosures
Price with disclosed trades
Daily closes, past year · marks sit on transaction dates, sized by value
140 trades
| Reporting person | Filed | Transaction | Transaction value | Source | Actions |
|---|---|---|---|---|---|
| Guarini Kathryn Director | Sep 3, 2026 1-day lag | Exercise Sep 2, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Guarini Kathryn Director | Sep 3, 2026 1-day lag | Sale Sep 2, 2026 | $340K Filed shares x price | SEC Form 4 View filing | |
| Guarini Kathryn Director | Sep 3, 2026 1-day lag | Exercise Sep 2, 2026 | $287.75K Filed shares x price | SEC Form 4 View filing | |
| Donald J Trump Executive branch official | Aug 22, 2026 67-day lag | Sale Jun 16, 2026 | $1K - $15K Reported range | OGE 278-T View filing | |
| Donald J Trump Executive branch official | Aug 22, 2026 71-day lag | Sale Jun 12, 2026 | $100K - $250K Reported range | OGE 278-T View filing | |
| Larosa Joseph J EVP General Counsel And Secret | Aug 21, 2026 2-day lag | Exercise Aug 19, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Larosa Joseph J EVP General Counsel And Secret | Aug 21, 2026 2-day lag | Exercise Aug 19, 2026 | $4.69M Filed shares x price | SEC Form 4 View filing | |
| Larosa Joseph J EVP General Counsel And Secret | Aug 21, 2026 2-day lag | Disposition Aug 19, 2026 | $7.49M Filed shares x price | SEC Form 4 View filing | |
| Fenimore Christopher R. EVP Finance CFO | Aug 20, 2026 2-day lag | Exercise Aug 18, 2026 | $2.4M Filed shares x price | SEC Form 4 View filing | |
| Fenimore Christopher R. EVP Finance CFO | Aug 20, 2026 2-day lag | Exercise Aug 18, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Fenimore Christopher R. EVP Finance CFO | Aug 20, 2026 2-day lag | Disposition Aug 18, 2026 | $3.74M Filed shares x price | SEC Form 4 View filing | |
| Guarini Kathryn Director | Aug 12, 2026 2-day lag | Exercise Aug 10, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Guarini Kathryn Director | Aug 12, 2026 2-day lag | Exercise Aug 10, 2026 | $287.75K Filed shares x price | SEC Form 4 View filing | |
| Guarini Kathryn Director | Aug 12, 2026 2-day lag | Sale Aug 10, 2026 | $320K Filed shares x price | SEC Form 4 View filing | |
| Zoghbi Huda Y Director | Aug 12, 2026 2-day lag | Exercise Aug 10, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Zoghbi Huda Y Director | Aug 12, 2026 2-day lag | Exercise Aug 10, 2026 | $301.35K Filed shares x price | SEC Form 4 View filing | |
| Zoghbi Huda Y Director | Aug 12, 2026 2-day lag | Sale Aug 10, 2026 | $640K Filed shares x price | SEC Form 4 View filing | |
| Ryan Arthur F Director | Jul 7, 2026 5-day lag | Sale Jul 2, 2026 | $130.03K Filed shares x price | SEC Form 4 View filing | |
| Donald J Trump Executive branch official | Jul 1, 2026 51-day lag | Buy May 11, 2026 | $100K - $250K Reported range | OGE 278-T View filing | |
| Donald J Trump Executive branch official | Jul 1, 2026 65-day lag | Buy Apr 27, 2026 | $15K - $50K Reported range | OGE 278-T View filing | |
| Donald J Trump Executive branch official | Jul 1, 2026 77-day lag | Buy Apr 15, 2026 | $1K - $15K Reported range | OGE 278-T View filing | |
| Donald J Trump Executive branch official | Jul 1, 2026 85-day lag | Buy Apr 7, 2026 | $1K - $15K Reported range | OGE 278-T View filing | |
| Hon. Gilbert Cisneros U.S. House member | Jun 8, 2026 24-day lag | Sale May 15, 2026 | $1K - $15K Reported range | House PTR View filing | |
| Hon. Julia Letlow U.S. House member | Mar 12, 2026 28-day lag | Buy Feb 12, 2026 | $1K - $15K Reported range | House PTR View filing | |
| Bryan Bedford Executive branch official | Dec 19, 2025 100-day lag | Sale Sep 10, 2025 | $15K - $50K Reported range | OGE 278-T View filing | |
| Hon. Gilbert Cisneros U.S. House member | Dec 15, 2025 27-day lag | Buy Nov 18, 2025 | $1K - $15K Reported range | House PTR View filing | |
| Bryan Bedford Executive branch official | Nov 27, 2025 139-day lag | Buy Jul 11, 2025 | $1K - $15K Reported range | OGE 278-T View filing | |
| Hon. Rob Bresnahan U.S. House member | Jun 9, 2025 25-day lag | Buy May 15, 2025 | $1K - $15K Reported range | House PTR View filing | |
| Hon. Byron Donalds U.S. House member | May 24, 2025 44-day lag | Sale Apr 10, 2025 | $1K - $15K Reported range | House PTR View filing | |
| Hon. Byron Donalds U.S. House member | May 24, 2025 44-day lag | Sale Apr 10, 2025 | $1K - $15K Reported range | House PTR View filing |
Guarini Kathryn
Director
Sale
Calculated transaction value
$340K
400 shares @ $850
Traded
Sep 2, 2026
Filed
Sep 3, 2026
Guarini Kathryn
Director
Exercise
Calculated transaction value
$287.75K
400 shares @ $719.37
Traded
Sep 2, 2026
Filed
Sep 3, 2026
Donald J Trump
Executive branch official
Sale
Reported value range
$1K - $15K
Not reported
Traded
Jun 16, 2026
Filed
Aug 22, 2026
Donald J Trump
Executive branch official
Sale
Reported value range
$100K - $250K
Not reported
Traded
Jun 12, 2026
Filed
Aug 22, 2026
Larosa Joseph J
EVP General Counsel And Secret
Exercise
Calculated transaction value
$0
12,282 shares @ $0
Traded
Aug 19, 2026
Filed
Aug 21, 2026
Larosa Joseph J
EVP General Counsel And Secret
Exercise
Calculated transaction value
$4.69M
12,282 shares @ $381.92
Traded
Aug 19, 2026
Filed
Aug 21, 2026
Larosa Joseph J
EVP General Counsel And Secret
Disposition
Calculated transaction value
$7.49M
9,019 shares @ $830.15
Traded
Aug 19, 2026
Filed
Aug 21, 2026
Fenimore Christopher R.
EVP Finance CFO
Exercise
Calculated transaction value
$2.4M
6,283 shares @ $381.92
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Fenimore Christopher R.
EVP Finance CFO
Exercise
Calculated transaction value
$0
6,283 shares @ $0
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Fenimore Christopher R.
EVP Finance CFO
Disposition
Calculated transaction value
$3.74M
4,599 shares @ $813.47
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Guarini Kathryn
Director
Exercise
Calculated transaction value
$0
400 shares @ $0
Traded
Aug 10, 2026
Filed
Aug 12, 2026
Guarini Kathryn
Director
Exercise
Calculated transaction value
$287.75K
400 shares @ $719.37
Traded
Aug 10, 2026
Filed
Aug 12, 2026
Guarini Kathryn
Director
Sale
Calculated transaction value
$320K
400 shares @ $800
Traded
Aug 10, 2026
Filed
Aug 12, 2026
Zoghbi Huda Y
Director
Exercise
Calculated transaction value
$0
800 shares @ $0
Traded
Aug 10, 2026
Filed
Aug 12, 2026
Zoghbi Huda Y
Director
Exercise
Calculated transaction value
$301.35K
800 shares @ $376.69
Traded
Aug 10, 2026
Filed
Aug 12, 2026
Zoghbi Huda Y
Director
Sale
Calculated transaction value
$640K
800 shares @ $800
Traded
Aug 10, 2026
Filed
Aug 12, 2026
Ryan Arthur F
Director
Sale
Calculated transaction value
$130.03K
200 shares @ $650.15
Traded
Jul 2, 2026
Filed
Jul 7, 2026
Donald J Trump
Executive branch official
Buy
Reported value range
$100K - $250K
Not reported
Traded
May 11, 2026
Filed
Jul 1, 2026
Donald J Trump
Executive branch official
Buy
Reported value range
$15K - $50K
Not reported
Traded
Apr 27, 2026
Filed
Jul 1, 2026
Donald J Trump
Executive branch official
Buy
Reported value range
$1K - $15K
Not reported
Traded
Apr 15, 2026
Filed
Jul 1, 2026
Donald J Trump
Executive branch official
Buy
Reported value range
$1K - $15K
Not reported
Traded
Apr 7, 2026
Filed
Jul 1, 2026
Hon. Gilbert Cisneros
U.S. House member
Sale
Reported value range
$1K - $15K
Not reported
Traded
May 15, 2026
Filed
Jun 8, 2026
Hon. Julia Letlow
U.S. House member
Buy
Reported value range
$1K - $15K
Not reported
Traded
Feb 12, 2026
Filed
Mar 12, 2026
Bryan Bedford
Executive branch official
Sale
Reported value range
$15K - $50K
Not reported
Traded
Sep 10, 2025
Filed
Dec 19, 2025
Hon. Gilbert Cisneros
U.S. House member
Buy
Reported value range
$1K - $15K
Not reported
Traded
Nov 18, 2025
Filed
Dec 15, 2025
Bryan Bedford
Executive branch official
Buy
Reported value range
$1K - $15K
Not reported
Traded
Jul 11, 2025
Filed
Nov 27, 2025
Hon. Rob Bresnahan
U.S. House member
Buy
Reported value range
$1K - $15K
Not reported
Traded
May 15, 2025
Filed
Jun 9, 2025
Hon. Byron Donalds
U.S. House member
Sale
Reported value range
$1K - $15K
Not reported
Traded
Apr 10, 2025
Filed
May 24, 2025
Hon. Byron Donalds
U.S. House member
Sale
Reported value range
$1K - $15K
Not reported
Traded
Apr 10, 2025
Filed
May 24, 2025