Company profile

Personalis, Inc. Insider Trading

PSNL

Every SEC Form 4 insider trading filing for Personalis, Inc. (PSNL) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?

Exchange
Nasdaq
Sector
Services-Medical Laboratories
CIK
0001527753
Filings
97
Insiders
12
Last filing
2026-07-15

Activity summary

No insider transactions in the last 30 days. The most recent was on July 15, 2026, when Chen Richard bought 100,000 shares. 97 filings from 12 insiders are on record below.

Three year balance

Buy and sell value by quarter, Q4 23 to Q3 26. Personalis, Inc. insiders are net buyers across the period shown.

Q4 23Q1 24Q2 24Q3 24Q4 24Q1 25Q2 25Q3 25Q4 25Q1 26Q2 26Q3 26

Bars below the rule are sales, above are purchases. Largest quarter on the chart is $17.7M.

90 day insight

Over the last 90 days, Personalis, Inc. insiders filed 30 Form 4 transactions, none of which were open-market purchases or sales.

  • Most active insider: Tachibana Aaron with 14 transactions totaling $2.8M.
  • Largest single sale: $1.5M by Chen Richard on Jul 15, 2026.
  • 100% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.

Activity skews bullish — buys outpace sales.

Insider Transactions

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

DateInsiderCompanyTypeSharesPriceValue
Jul 15, 2026Chen RichardPSNL
Option Exercise10b5
100,000
Jul 15, 2026Chen RichardPSNL
Option Exercise10b5
100,000$2.44$244K
Jul 15, 2026Chen RichardPSNL
Sale10b5
100,000$15.15$1.51M
Jul 9, 2026Hall Christopher MPSNL
Option Exercise10b5
66,667
Jul 9, 2026Hall Christopher MPSNL
Option Exercise10b5
100,000$1.61$161K

45 more transactions hidden

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Top insiders

By total value filed.

Hall Christopher MChief Executive Officer8 filings$3.4M
Tachibana AaronCFO AND COO9 filings$543K
Chen RichardPresident and CMO2 filings$1.3M

Institutional Ownership

Top 13F-HR holders of Personalis, Inc. as of 2026-06-30

↓ decreasing
Total reported AUM
$431.0M
QoQ change
-11.7%
Reporting period
2026-06-30
#1
Merck & Co., Inc.
CIK 0000310158
$188.2M
14.0M shares
#2
Aberdeen Group plc
CIK 0001716774
$50.2M
3.7M shares
#3
BlackRock, Inc.
CIK 0002012383
$45.6M
3.4M shares

Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →