NASDAQ:PSNL

Personalis Stock Insider Trading

Healthcare > Medical - Diagnostics & Research

Buy PSNL

*Your capital is at risk

$10.78

-0.360 (-3.23%)

At Close: Jun 03, 2026

Personalis Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 7.54. In total, the insiders bought 5.93M and sold 326.47K PSNL shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	7.54
● Buy	5.93M shares
● Sell	326.47K shares
68% Buy Activity Moderate Positive Correlation
Sell Signal Low Confidence May 29, 2026 Analysis Breakdown: Weakened by a contradictory positive Insider Power Score. Partially supported by a positive historical correlation. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Mar 15, 2026 Buy	Common Stock A-Award	Tachibana Aaron CFO And COO	C-Suite Officer	34 375 Value: $370.6K
Mar 15, 2026 Buy	Stock Option (right to buy) A-Award	Tachibana Aaron CFO And COO	C-Suite Officer	206 250 Value: $1.39M
Mar 15, 2026 Buy	Common Stock A-Award	Chen Richard President And Cmo	CEO / President	46 875 Value: $505.3K
Feb 23, 2026 Buy	Stock Option (right to buy) A-Award	Hall Christopher M President And CEO	CEO / President	33 333 Value: $53.7K
Feb 23, 2026 Buy	Stock Option (right to buy) A-Award	Moore Stephen Michael SVP And Chief Legal Officer	Officer	8 333 Value: $13.4K
Feb 23, 2026 Buy	Stock Option (right to buy) A-Award	Chen Richard Chief Medical Officer And EVP	Officer	15 000 Value: $24.2K
Feb 23, 2026 Buy	Stock Option (right to buy) A-Award	Tachibana Aaron CFO And COO	C-Suite Officer	15 000 Value: $24.2K
Jan 22, 2026 Buy	Stock Option (right to buy) M-Exempt	Tachibana Aaron CFO And COO	C-Suite Officer	1 201 Value: $11.0K
Jan 22, 2026 Sell	Common Stock S-Sale	Tachibana Aaron CFO And COO	C-Suite Officer	1 201 Value: $13.8K
Jan 22, 2026 Buy	Common Stock M-Exempt	Tachibana Aaron CFO And COO	C-Suite Officer	1 201 Value: $11.0K
Dec 22, 2025 Buy	Common Stock P-Purchase	Tempus Ai, Inc. 10 Percent Owner	10% Owner	28 000 Value: $250.0K
Dec 19, 2025 Buy	Common Stock P-Purchase	Tempus Ai, Inc. 10 Percent Owner	10% Owner	29 641 Value: $248.7K
Dec 18, 2025 Buy	Common Stock P-Purchase	Tempus Ai, Inc. 10 Percent Owner	10% Owner	31 430 Value: $248.6K
Dec 17, 2025 Buy	Common Stock P-Purchase	Tempus Ai, Inc. 10 Percent Owner	10% Owner	31 650 Value: $248.8K
Nov 25, 2025 Buy	Common Stock P-Purchase	Tempus Ai, Inc. 10 Percent Owner	10% Owner	13 888 Value: $152.8K
Nov 25, 2025 Buy	Common Stock P-Purchase	Tempus Ai, Inc. 10 Percent Owner	10% Owner	9 712 Value: $97.9K
Nov 25, 2025 Buy	Common Stock M-Exempt	Tachibana Aaron CFO And COO	C-Suite Officer	103 668 Value: $949.6K
Nov 25, 2025 Sell	Common Stock S-Sale	Tachibana Aaron CFO And COO	C-Suite Officer	103 668 Value: $1.12M
Nov 25, 2025 Buy	Stock Option (right to buy) M-Exempt	Tachibana Aaron CFO And COO	C-Suite Officer	103 668 Value: $949.6K
Nov 24, 2025 Buy	Common Stock P-Purchase	Tempus Ai, Inc. 10 Percent Owner	10% Owner	25 225 Value: $249.0K
Nov 21, 2025 Buy	Common Stock P-Purchase	Tempus Ai, Inc. 10 Percent Owner	10% Owner	16 599 Value: $161.7K
Nov 21, 2025 Buy	Common Stock P-Purchase	Tempus Ai, Inc. 10 Percent Owner	10% Owner	9 900 Value: $87.5K
Nov 20, 2025 Buy	Common Stock P-Purchase	Tempus Ai, Inc. 10 Percent Owner	10% Owner	28 827 Value: $248.8K
Nov 19, 2025 Buy	Common Stock P-Purchase	Tempus Ai, Inc. 10 Percent Owner	10% Owner	30 645 Value: $248.8K
Nov 18, 2025 Buy	Common Stock P-Purchase	Tempus Ai, Inc. 10 Percent Owner	10% Owner	64 750 Value: $496.6K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT PERSONALIS INC.

Personalis, Inc. operates as a cancer genomics company worldwide. The company provides sequencing and data analysis services to support the development of cancer therapies and large-scale genetic research programs. It offers NeXT Platform, which provides data analysis for tumor and its immune microenvironment, from a single limited tissue or plasma sample; ImmunoID Next for tumor profiling from tissue; NeXT Liquid Biopsy for tumor profiling from ...

Read Full Profile Here