Fundraising Fox

Personalis

NASDAQ: PSNL

Menlo Park, US · Founded 2011 · Delaware corporation · 1 known investors

Biotech

Founders & leadership

Personalis was founded in 2011 by John West.

JW
John WestinFounder · Owner
CT
Carol TillisExecutive

Board

JMJonathan MacQuitty
Jonathan MacQuittyinBoard directorPartner at Lightspeed Venture Partners
VM
Vincent MilesBoard director
CS
Chris SchaepeBoard director
PB
Patrick BalthropBoard director
KL
Ken LudlumBoard director

Investors · 1

Lightspeed Venture PartnersMenlo Park · $1.7M – $87Mvia Jonathan MacQuitty · board

Reported raises · per SEC filings

Form D private placements

$41.8M disclosed across 2 rounds · 2014–2017

▶$12.2MraisedJul 2017 · 37 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • Jonathan MacQuittyDirector
  • Patrick BalthropDirector
  • Vincent MilesDirector
  • John WestExecutive Officer, Director
  • Carol TillisExecutive Officer
  • Ken LudlumDirector
  • Chris SchaepeDirector
Offering amount
$15M
Amount sold
$12.2M
First sale
Jun 2017
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$29.6MraisedDec 2014 · 32 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • Chris SchaepeDirector
  • Jonathan MacQuittyDirector
  • Carol TillisExecutive Officer
  • John WestExecutive Officer, Director
Offering amount
$33.6M
Amount sold
$29.6M
First sale
Dec 2014
Incorporated
Corporation, Delaware, 2011
Federal exemptions
06b
Full filing on SEC EDGAR ↗

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.

Valuation · disclosed

Disclosed events
$505.8Mvaluation at IPOJun 2019 · $17.00/share · 424B4
filing ↗

Source: SEC prospectus filings, and round valuations the company or its investors disclosed — follow each entry's link for the claim.

In the news

Tempus AI shares rise 2.7% following analyst actionsfinance.yahoo.com · Sep 2026Tempus AI Stock Slides As $1.5B Personalis Bet Raises Stakestimothysykes.com · Aug 2026Ameriprise Financial (PSNL) discloses 5.8% ownership stake in Personalis common stockstocktitan.net · Aug 2026Tempus AI buys Personalis for $1.5B; UCSF Health, Kleiner Perkins and Doerr Capital launch health AI accelerator; Candid Health raises $120M - VatorNewsvator.tv · Jul 2026

Frequently asked questions

Who founded Personalis?
Personalis was founded by John West in 2011.
Who are Personalis's investors?
Personalis's investors include Lightspeed Venture Partners.
How much funding has Personalis raised?
Personalis has disclosed $41.8M raised across 2 rounds.
Where is Personalis headquartered?
Personalis is headquartered in Menlo Park, US.