PSNL Personalis, Inc.

NEUTRAL Impact: 3/10 144
Horizon days Filed May 29, 2026 Processed 7d 4h ago SEC 0001950047-26-005302
Form 144 — notice of proposed sale of securities

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Executive Summary

Aaron Tachibana, an officer of Personalis, Inc., filed a Form 144 on May 29, 2026, indicating intent to sell 38,799 shares of common stock, with an estimated aggregate market value of approximately $426,013. The shares are proposed to be sold following the exercise of stock options. This is a routine insider transaction for tax or diversification purposes, but the timing and size relative to the officer's holdings are not disclosed in the filing.

Actionable Insight

This is a routine insider sale following option exercise, likely for tax or liquidity purposes. The small size relative to market cap suggests no material signal. Monitor for any subsequent Form 4 filings to confirm execution, and watch for any unusual insider selling patterns ahead of the next earnings report.

Key Facts

  • Officer Aaron Tachibana filed Form 144 to sell 38,799 shares of Personalis common stock.
  • Estimated aggregate market value of the proposed sale is approximately $426,013.
  • Shares were acquired through the exercise of stock options on May 29, 2026.
  • The sale is proposed to occur on or after May 29, 2026, on the Nasdaq exchange.
  • No other insider sales or purchases were reported in the prior 30 days.

Financial Impact

Proposed sale of 38,799 shares valued at ~$426,013, representing a small fraction of the company's $1.1B market cap.

dilution

Risk Factors

  • Insider sale could signal lack of confidence if followed by additional large sales by other officers.
  • Form 144 is only an intent to sell; the sale may not occur.

Market Snapshot

Exchange
Nasdaq
Sector
Services-Medical Laboratories
Analyst Consensus
85% bullish (13 analysts)

Documents Analyzed

This report is based on 3 SEC documents filed with EDGAR.

DocumentAccession Number
144 Filing (Primary)0001950047-26-005302
Document: 0001950047-26-005302-index.html0001950047-26-005302
Document: 0001950047-26-005302.txt0001950047-26-005302
5 reports for PSNL
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Reports for PSNL — sortable, filterable
Type Now
Jun 6, 2026
today
Insider Cluster
NEUTRAL ★ 3/10
awaiting T+20
Jun 4, 2026
1d ago
144
NEUTRAL ★ 3/10
$12.08 awaiting T+20awaiting T+20$10.75 (−11.01%)
May 30, 2026
7d ago
Insider Cluster
BEARISH ★ 5/10
awaiting T+20
May 29, 2026
7d ago
144
NEUTRAL ★ 3/10
awaiting T+20
May 28, 2026
8d ago
144
BEARISH ★ 5/10
awaiting T+20
Showing 5 of 5

US Market Status

Market Closed — Opens Mon (36h 27m)

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