NASDAQ: PSNL
Personalis Inc Stock Ownership - Who owns Personalis?

Insider buying vs selling

Have Personalis Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Richard ChenPres;CMO2026-07-15100,000$2.44
$244.00kBuy
Richard ChenPres;CMO2026-07-15100,000$15.15
$1.52MSell
Christopher M. HallChief Executive Officer2026-07-09100,000$15.08
$1.51MSell
Christopher M. HallChief Executive Officer2026-07-09100,000$1.61
$161.00kBuy
Aaron TachibanaCFO AND COO2026-06-294,982$14.00
$69.75kSell
Aaron TachibanaCFO AND COO2026-06-294,982$5.32
$26.50kBuy
Aaron TachibanaCFO AND COO2026-06-2628,832$9.16
$264.10kBuy
Aaron TachibanaCFO AND COO2026-06-2651,251$13.18
$675.49kSell
Christopher M. HallChief Executive Officer2026-06-26100,000$13.15
$1.32MSell
Christopher M. HallChief Executive Officer2026-06-26100,000$1.61
$161.00kBuy

1 of 4

PSNL insiders have bought more... subscribe to Premium to read more.
Net Insider Buy/Sell (L12M) Ownership

Be the first to know when PSNL insiders and whales buy or sell their stock.

PSNL Shareholders

What type of owners hold Personalis Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Merck Co Inc13.15%14,044,943$196.91MInstitution
Merck Co Inc13.15%14,044,943$196.91MInsider
Tempus Ai Inc12.21%13,039,067$182.81MInsider
Lightspeed Management Company LLC7.64%8,160,734$114.41MInstitution
Ark Investment Management LLC7.44%7,944,112$111.38MInstitution
Ameriprise Financial Inc7.11%7,592,807$106.45MInstitution
Blackrock Inc5.05%5,389,885$75.57MInstitution
T Rowe Price Investment Management Inc4.46%4,758,091$66.71MInstitution
Abingworth LLP3.51%3,753,340$52.62MInsider
Aberdeen Group PLC3.27%3,488,308$48.91MInstitution

1 of 3

PSNL vs Diagnostic & Research Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
PSNL69.77%30.23%Net BuyingNet Buying
FRNM9.46%24.63%Net BuyingNet Buying
OPK20.76%79.24%Net BuyingNet Selling
CSTL85.32%14.68%Net SellingNet Selling
NEO73.35%26.65%Net SellingNet Selling

Personalis Stock Ownership FAQ

Who owns Personalis?

Personalis (NASDAQ: PSNL) is owned by 79.23% institutional shareholders, 34.33% Personalis insiders, and 0.00% retail investors. Merck Co Inc is the largest individual Personalis shareholder, owning 14.04M shares representing 13.15% of the company. Merck Co Inc's Personalis shares are currently valued at $199.58M.

If you're new to stock investing, here's how to buy Personalis stock.
WallStreetZen does not provide financial advice and does not issue recommendations or offers to buy stock or sell any security.

Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.