Senior insider sale
REGENERON PHARMACEUTICALS, INC. — senior position signals high conviction
$660.0K
800.00 shares
What this filing means
GUARINI KATHRYN plans to sell 800.00 shares of REGENERON PHARMACEUTICALS, INC. valued at approximately $660.0K. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.
Filed: 9/2/2026ACC: 0001969223-26-000987
Director
Since Sep 2023
800.00
Shares to sell
$660.0K
Approx. market value
400.00
Acquired (3 months)
1
Planned
1 completed
Securities Acquired — Last 3 Months1
Exercise of stock option
Cash
9/2/2026
400.00Total acquired400.00
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
9/2/2026 | Exercise of stock option Cash | 400.00 | — |
| Total | 400.00 | ||
Planned & Completed Dispositions2
Completed
—Completed
Units to sell
400.00
Market value
$320.0K
8/10/2026
Planned — Approximate Date
NasdaqPlanned
Units to sell
400.00
Market value
$340.0K
9/2/2026
Total
Units
800.00
Value
$660.0K
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
| Completed | ||||
8/10/2026 | 400.00 | $320.0K | — | Completed |
| Planned — Approximate Date | ||||
9/2/2026 | 400.00 | $340.0K | Nasdaq | Planned |
| Total | 800.00 | $660.0K | ||