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

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Personalis Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Aaron TachibanaCFO AND COO2026-01-221,201$11.50
$13.81kSell
Aaron TachibanaCFO AND COO2026-01-221,201$9.16
$11.00kBuy
Aaron TachibanaCFO AND COO2025-11-25103,668$10.78
$1.12MSell
Aaron TachibanaCFO AND COO2025-11-25103,668$9.16
$949.60kBuy
Christopher M. HallPRESIDENT AND CEO2025-11-0329,612$8.99
$266.21kSell
Aaron TachibanaCFO AND COO2025-07-28641$6.57
$4.21kSell
Richard ChenCHIEF MEDICAL OFFICER AND EVP2025-07-28452$6.57
$2.97kSell
Richard ChenCHIEF MEDICAL OFFICER AND EVP2025-05-16910$4.95
$4.50kSell
Aaron TachibanaCFO AND COO2025-05-161,291$4.95
$6.39kSell
Stephen Michael MooreSVP and Chief Legal Officer2025-05-161,675$4.95
$8.29kSell

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Net Insider Buy/Sell (L12M) Ownership

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PSNL Shareholders

What type of owners hold Personalis Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Merck Co Inc15.82%14,044,943$121.07MInstitution
Merck Co Inc15.82%14,044,943$121.07MInsider
Tempus Ai Inc14.32%12,718,800$109.64MInsider
Lightspeed Management Company LLC9.19%8,160,734$70.35MInstitution
Ark Investment Management LLC8.91%7,910,191$68.19MInstitution
Blackrock Inc6.36%5,644,799$48.66MInstitution
Aigh Capital Management LLC4.38%3,892,101$33.55MInstitution
Abingworth LLP4.23%3,753,340$32.35MInsider
Vanguard Group Inc3.39%3,006,410$25.92MInstitution
T Rowe Price Investment Management Inc3.25%2,883,576$24.86MInstitution

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PSNL vs Diagnostic & Research Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
PSNL64.17%35.83%Net SellingNet Buying
FLGT55.73%41.65%Net SellingNet Selling
CSTL85.51%14.49%Net SellingNet Selling
OPK19.98%80.02%Net BuyingNet Buying
CDNA77.47%22.53%Net SellingNet Selling
View Top Diagnostic & Research Stocks

Personalis Stock Ownership FAQ

Who owns Personalis?

Personalis (NASDAQ: PSNL) is owned by 72.81% institutional shareholders, 40.66% Personalis insiders, and 0.00% retail investors. Merck Co Inc is the largest individual Personalis shareholder, owning 14.04M shares representing 15.82% of the company. Merck Co Inc's Personalis shares are currently valued at $125.00M.

If you're new to stock investing, here's how to buy Personalis stock.
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