Aaron Tachibana - 22 Jan 2026 Form 4 Insider Report for Personalis, Inc. (PSNL)

Signature
/s/ Aaron Tachibana
Issuer symbol
PSNL
Transactions as of
22 Jan 2026
Net transactions value
-$2,810
Form type
4
Filing time
23 Jan 2026, 18:03:00 UTC
Previous filing
28 Nov 2025
Next filing
25 Feb 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Tachibana Aaron CFO AND COO C/O PERSONALIS, INC., 6600 DUMBARTON CIRCLE, FREMONT /s/ Aaron Tachibana 23 Jan 2026 0001401786

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction PSNL Common Stock Options Exercise $11,001 +1,201 +0.73% $9.16 165,659 22 Jan 2026 Direct F1
transaction PSNL Common Stock Sale $13,812 -1,201 -0.72% $11.50 164,458 22 Jan 2026 Direct F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction PSNL Stock Option (right to buy) Options Exercise $0 -1,201 -1.1% $0.000000 107,631 22 Jan 2026 Common Stock 1,201 $9.16 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 The sales and option exercise reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 7, 2025.
F2 The shares subject to the option are fully vested and exercisable.