PERSONALIS INC (PSNL) Institutional Ownership and Insiders Activity

PERSONALIS INC (PSNL) is widely held by institutional investors, with 156 firms reporting positions valued at approximately $1.14B based on SEC Form 13F filings for the quarter ended June 30, 2026.

Merck & Co., Inc. is the largest disclosed holder, reporting approximately $188.20M in PSNL holdings in its latest filing.

Recent insider activity includes 7 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.