Personalis Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGM:PSNL Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
28 Jul 25	SellUS$4,211	Aaron Tachibana	Individual	641	US$6.57
28 Jul 25	SellUS$2,970	Richard Chen	Individual	452	US$6.57
16 May 25	SellUS$8,291	Stephen Moore	Individual	1,675	US$4.95
16 May 25	SellUS$4,505	Richard Chen	Individual	910	US$4.95
16 May 25	SellUS$6,390	Aaron Tachibana	Individual	1,291	US$4.95
28 Jan 25	SellUS$3,005	Richard Chen	Individual	519	US$5.79
28 Jan 25	SellUS$4,099	Aaron Tachibana	Individual	708	US$5.79
16 Dec 24	SellUS$5,780	Stephen Moore	Individual	1,513	US$3.82
16 Dec 24	SellUS$26,224	Aaron Tachibana	Individual	6,865	US$3.82
16 Dec 24	SellUS$18,466	Richard Chen	Individual	4,834	US$3.82
18 Nov 24	SellUS$6,416	Stephen Moore	Individual	1,693	US$3.79
18 Nov 24	SellUS$3,491	Richard Chen	Individual	921	US$3.79
18 Nov 24	SellUS$4,954	Aaron Tachibana	Individual	1,307	US$3.79
01 Nov 24	SellUS$142,263	Christopher Hall	Individual	26,443	US$5.38

Insider Trading Volume

Insider Buying: PSNL insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of PSNL?
Owner Type	Number of Shares	Ownership Percentage
Individual Insiders	1,158,106	1.31%
VC/PE Firms	8,160,734	9.2%
General Public	14,911,940	16.8%
Public Companies	26,763,743	30.2%
Institutions	37,682,539	42.5%

Dilution of Shares: Shareholders have been substantially diluted in the past year, with total shares outstanding growing by 56.4%.

Top Shareholders

Top 25 shareholders own 77.61% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
15.8%	Merck & Co., Inc.	14,044,943	US$85.1m	0%	no data
14.3%	Tempus AI, Inc.	12,718,800	US$77.1m	0%	no data
9.2%	Lightspeed Ventures, LLC	8,160,734	US$49.5m	0%	1.69%
8.02%	ARK Investment Management LLC	7,107,923	US$43.1m	-1.12%	0.26%
5.87%	BlackRock, Inc.	5,203,993	US$31.5m	73.5%	no data
4.2%	Aigh Capital Management, LLC	3,723,958	US$22.6m	-6.17%	8.38%
3.54%	The Vanguard Group, Inc.	3,137,061	US$19.0m	143%	no data
1.98%	Aberdeen Group Plc	1,759,497	US$10.7m	3.21%	0.01%
1.89%	Blue Water Life Science Advisors, LP	1,676,300	US$10.2m	42.6%	8.15%
1.54%	T. Rowe Price Group, Inc.	1,365,601	US$8.3m	1,510%	no data
1.54%	Geode Capital Management, LLC	1,365,598	US$8.3m	166%	no data
1.23%	Millennium Management LLC	1,090,727	US$6.6m	25.2%	0.01%
0.89%	Dimensional Fund Advisors LP	784,864	US$4.8m	23.6%	no data
0.81%	Wellington Shields Capital Management, LLC	718,820	US$4.4m	0%	0.43%
0.78%	State Street Global Advisors, Inc.	687,584	US$4.2m	252%	no data
0.74%	Kennedy Capital Management LLC	653,383	US$4.0m	8.12%	0.09%
0.72%	Amova Asset Management Co., Ltd.	640,420	US$3.9m	-5.26%	no data
0.72%	Teachers Insurance and Annuity Association-College Retirement Equities Fund	634,380	US$3.8m	0%	no data
0.71%	Morgan Stanley, Investment Banking and Brokerage Investments	625,659	US$3.8m	11.9%	no data
0.64%	Renaissance Technologies LLC	563,243	US$3.4m	-45.5%	no data
0.56%	Orin Hirschman	494,575	US$3.0m	0%	no data
0.56%	Michigan Department of Treasury, Bureau of Investments	493,798	US$3.0m	0%	0.01%
0.49%	ExodusPoint Capital Management, LP	437,369	US$2.7m	1,180%	0.03%
0.45%	Northern Trust Global Investments	399,989	US$2.4m	312%	no data
0.37%	Columbia Management Investment Advisers, LLC	329,865	US$2.0m	1,170%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/09/25 20:28
End of Day Share Price	2025/09/25 00:00
Earnings	2025/06/30
Annual Earnings	2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Personalis, Inc. is covered by 14 analysts. 8 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Derik de Bruin	BofA Global Research
Mark Massaro	BTIG
Patrick Donnelly	Citigroup Inc