Form 144: 51,251 PSNL Shares Proposed for Sale

Morgan Stanley Smith Barney LLC Executive Financial Services filed a Form 144 notice related to Common shares tied to an Exercise of Stock Options on 06/26/2026.

Rhea-AI Filing Summary

Morgan Stanley Smith Barney LLC Executive Financial Services filed a Form 144 notice related to Common shares tied to an Exercise of Stock Options on 06/26/2026. The notice lists 51,251 shares to be sold for cash. It also discloses prior 10b5-1 sales by Aaron L. Tachibana of 40,000 shares on 06/04/2026 ($480,584) and 38,799 shares on 05/29/2026 ($449,273.02).

Key Figures

Shares proposed to be sold: 51,251 shares 10b5-1 sale (June): 40,000 shares 10b5-1 sale (May): 38,799 shares +1 more

4 metrics

Shares proposed to be sold 51,251 shares Exercise of Stock Options on <date>06/26/2026

10b5-1 sale (June) 40,000 shares Sold on <date>06/04/2026, proceeds $480,584.00

10b5-1 sale (May) 38,799 shares Sold on <date>05/29/2026, proceeds $449,273.02

Filing date for exercise 06/26/2026 Date tied to the exercise and proposed sale

Key Terms

Form 144, 10b5-1, Exercise of Stock Options

3 terms

Form 144 regulatory

"Filed as the notice of proposed sale of restricted/affiliate securities"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

10b5-1 regulatory

"Listed as the method for prior sales by Aaron L. Tachibana"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Exercise of Stock Options financial

"Describes the source of the shares to be sold on 06/26/2026"

FAQ

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

What does the Form 144 for PSNL disclose?

The filing discloses a proposed sale of 51,251 common shares tied to an exercise of stock options on 06/26/2026. It lists prior 10b5-1 sales by Aaron L. Tachibana on 06/04/2026 and 05/29/2026.

Who conducted prior 10b5-1 sales mentioned in the PSNL Form 144?

The filing names Aaron L. Tachibana as the seller for two 10b5-1 transactions: 40,000 shares on 06/04/2026 and 38,799 shares on 05/29/2026, with proceeds shown in the notice.

What proceeds are reported for the recent 10b5-1 sales in the filing?

The document shows proceeds of $480,584.00 for 40,000 shares sold on 06/04/2026 and $449,273.02 for 38,799 shares sold on 05/29/2026, as listed in the Form 144.

Are the shares in the Form 144 being sold by the issuer or an affiliate?

The filing lists the transaction as an exercise of stock options and identifies the method as Cash; the notice is filed by Morgan Stanley Smith Barney LLC Executive Financial Services and names the selling affiliate in the entries.

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

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Accepted by SEC EDGAR 06/26/2026 - 04:25 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001401786
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Personalis, Inc.
SEC File Number	001-38943
Address of Issuer	6600 Dumbarton Circle Fremont CALIFORNIA 94555
Phone	(650)752-1300
Name of Person for Whose Account the Securities are To Be Sold	AARON TACHIBANA
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	51251	645250.09	104721098	06/26/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	06/26/2026	Exercise of Stock Options	Issuer			51251	06/26/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for AARON L TACHIBANA 6600 Dumbarton Circle Fremont CA 94555	Common	06/04/2026	40000	480584.00
10b5-1 Sales for AARON L TACHIBANA 6600 Dumbarton Circle Fremont CA 94555	Common	05/29/2026	38799	449273.02

144: Remarks and Signature

Remarks
Date of Notice	06/26/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/07/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Aaron Tachibana
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)