Personalis CEO sells 7,459 shares for taxes

Personalis CEO Christopher M. Hall reported an automatic share sale to cover taxes tied to vested RSUs, retaining over two hundred thousand shares afterward.

Available on EDGAR 09/22/2026 - 04:10 PM EDT Accepted by SEC EDGAR 09/22/2026 - 04:10 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Personalis, Inc. (PSNL) director and Chief Executive Officer Christopher M. Hall reported a sale of 7,459 shares of common stock on September 18, 2026, at $16.22 per share. According to the disclosure, the shares were automatically sold to cover a tax withholding obligation from vested restricted stock units, and Hall continued to hold 228,527 shares directly afterward.

Insider Trade Summary

Net Seller: 7,459 shares

Net Sell 1 txn

Insider Hall Christopher M

Role Chief Executive Officer

Sold 7,459 shs ($121K)

Share of Position Sold 3.2%

Type	Security	Shares	Price	Value
Sale	Common Stock F1	7,459	$16.22	$121K

Holdings After Transaction: Common Stock — 228,527 shares (Direct)

Holdings Before and After: Common Stock, 235,986 to 228,527 shares (Direct)

Other Insiders: 3 other insiders reported open-market sales of this stock in the 30 days up to this filing.

Footnotes (1)

1. F1. Shares automatically sold to cover tax withholding obligation from settlement of vested restricted stock units.

Key Figures

Shares sold: 7,459 shares Sale price per share: $16.22 per share Shares held after transaction: 228,527 shares

3 metrics

Shares sold 7,459 shares Common stock sold on September 18, 2026

Sale price per share $16.22 per share Price for the 7,459 shares sold on September 18, 2026

Shares held after transaction 228,527 shares Directly owned by Christopher M. Hall after the September 18, 2026 sale

Key Terms

restricted stock units, tax withholding obligation, open market or private transaction

3 terms

restricted stock units financial

"from settlement of vested restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligation financial

"sold to cover tax withholding obligation from settlement"

open market or private transaction financial

"Sale in open market or private transaction"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did PSNL report for Christopher M. Hall?

Christopher M. Hall reported selling 7,459 shares of Personalis common stock on September 18, 2026, at $16.22 per share. The shares were automatically sold to cover a tax withholding obligation arising from the settlement of vested restricted stock units.

How many PSNL shares does the CEO hold after this reported transaction?

After the reported tax-related sale, Christopher M. Hall directly held 228,527 shares of Personalis common stock. This figure reflects his position immediately following the September 18, 2026 transaction.

Was the PSNL CEO’s September 18, 2026 sale part of a Rule 10b5-1 trading plan?

No. The disclosure indicates that no Rule 10b5-1 trading plan was affirmed for this transaction. The footnote instead explains that the shares were automatically sold to satisfy a tax withholding obligation from vested restricted stock units.

What was the price for the PSNL shares sold by the CEO?

The 7,459 Personalis shares sold by Christopher M. Hall on September 18, 2026 were reported at a price of $16.22 per share. The transaction is described as a sale in the open market or a private transaction.

Does the PSNL filing indicate why the CEO’s shares were sold?

Yes. A footnote explains that the shares were automatically sold to cover a tax withholding obligation arising from the settlement of vested restricted stock units, indicating the sale was tied to equity compensation rather than a discretionary portfolio decision.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a 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). See Instruction 10.

1. Name and Address of Reporting Person^*

Hall Christopher M

(Last) (First) (Middle)

C/O PERSONALIS, INC.

6600 DUMBARTON CIRCLE

(Street)

FREMONT CALIFORNIA 94555

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Personalis, Inc. [ PSNL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/18/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/18/2026		S		7,459(1)	D	$16.22	228,527	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Shares automatically sold to cover tax withholding obligation from settlement of vested restricted stock units.

	/s/ Aaron Tachibana, Attorney-in-Fact	09/22/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)