Reporting Owner Activity for Stuart A. Arbuckle

Form 3/4/5 issuer positions and transaction evidence for this reporting owner.

Issuer positions

Largest position

VERTEX PHARMACEUTICALS INC / MA

Disclosed value

$29.57M

Recent activity

Available

Location: Cambridge, MA
Ownership summary: Disclosed holdings value
$29,574,187
Estimated from parsed Forms 3/4/5 holdings when values are available.
Issuer positions
5
Distinct issuers linked to this reporting owner in parsed SEC filings.
Largest parsed position
VERTEX PHARMACEUTICALS INC / MA (VRTX)
About $28.59M reported in parsed filings.
Latest ownership filing
22 May 2026
Most recent owner-level filing date in the parsed SEC record.
VERTEX PHARMACEUTICALS INC / MA (VRTX)
Evp, Coo - about $28.59M reported
RHYTHM PHARMACEUTICALS, INC. (RYTM)
Director - about $421.3K reported
Praxis Precision Medicines, Inc. (PRAX)
Director - about $336.3K reported
ALNYLAM PHARMACEUTICALS, INC. (ALNY)
Director - about $222K reported
+1 more
Additional issuer positions are listed below.
Values come from parsed SEC Forms 3/4/5 and should be verified against the source filing.
Reporting signature: Brett Budzinski, Attorney-in-Fact For: Stuart A. Arbuckle
Source filings: Open source filing history

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