Derivative exercise or conversion — not an open-market buy.
Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell
View the official recordSEC Form 4 — Statement of Changes in Beneficial OwnershipAll the details
Dates, kept separate
Transaction date
Nov 20, 2025
Reporting period
Not applicable
Filed with the SEC
Nov 24, 2025
DirectorOption exercise
Context
Classification
option exercise
Code M — exercise or conversion of a derivative security
Planned / mechanical clue
Footnote references a pre-arranged trading plan (Rule 10b5-1)
Only flagged when a footnote says so; never inferred
Source receipt
Record ID
0001683607-25-000006
Filed / recorded
Nov 24, 2025, 9:05 PM UTC
Added to OQRO
Oct 2, 2026, 12:28 PM UTC
Parser
form4-xml-v1
Data quality
Verified: identifiers matched exactly
Issuer
REGENERON PHARMACEUTICALS, INC.
Issuer CIK
872589
Ticker
REGN
Reporting person
Bonnie L Bassler
Relationship
Director
Security
Non-Qualified Stock Option (right to buy)
Table
Derivative (Table II)
Transaction date
Nov 20, 2025
Transaction code
M
Shares / units
760
Price per share
$0.00
Acquired / disposed
Disposed (D)
Shares owned after
756
Ownership form
Direct
Amendment
No
Footnotes from the filing
Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on May 2, 2025.
On the date of the Issuer's first annual meeting of shareholders following the date of grant, a portion of these stock options equal to the portion of one year that had passed from the date of grant became exercisable, and the remainder became exercisable on the first anniversary of the date of grant.