// company-profile
Personalis, Inc.
PSNLExchangeNasdaqSectorServices-Medical LaboratoriesInc.DEFilings92Insiders12
// api This Personalis, Inc. insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
Mixed insider activity over the last 30 days: 0 purchases and 0 sales (0 transactions total).
// 90-day insight
Over the last 90 days, Personalis, Inc. insiders bought $0 across 11 transactions with no open-market sales.
- Most active insider: Tachibana Aaron with 6 transactions totaling $1.7M.
- Largest single sale: $883K by Hall Christopher M on May 29, 2026.
- 100% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Personalis, Inc. as of 2026-03-31
Total reported AUM
$488.0M
QoQ change
-3.4%
Reporting period
2026-03-31
#1
Merck & Co., Inc.
CIK 310158
$89.5M
14.0M shares
#2
LIGHTSPEED MANAGEMENT COMPANY, L.L.C.
CIK 1702122
$52.0M
8.2M shares
#3
ARK Investment Management LLC
CIK 1697748
$50.6M
7.9M shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 4, 2026 | Tachibana Aaron | PSNL | Option Exercise10b5 | 40,000 | $0.00 | $0K |
| Jun 4, 2026 | Tachibana Aaron | PSNL | Option Exercise10b5 | 40,000 | $9.16 | $366K |
| Jun 4, 2026 | Tachibana Aaron | PSNL | Sale10b5 | 40,000 | $12.01 | $480K |
| May 29, 2026 | Tachibana Aaron | PSNL | Sale10b5 | 38,799 | $11.58 | $449K |
| May 29, 2026 | Hall Christopher M | PSNL | Sale10b5 | 80,091 | $11.02 | $883K |
45 more transactions hidden
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