Pro-Dex holder plans Rule 144 sale of 20,000 shares

A stockholder of PRO DEX INC filed a Rule 144 notice to potentially sell 20,000 common shares acquired via a prior stock option exercise.

Rhea-AI Filing Summary

PRO DEX INC (PDEX) has a planned resale under Rule 144 by stockholder Richard Van Kirk Jr. The notice covers the proposed sale of 20,000 shares of common stock, with an indicated aggregate market value of $1,294,000.00 and reference to 3,203,334 shares of common stock, as of a stated context.

The shares to be sold were acquired through a stock option exercise on September 9, 2020, from the issuer. The proposed Rule 144 sale is dated September 9, 2026, and the shares are held through The Charles Schwab Corporation in an account associated with the filer.

Key Figures

Shares to be sold: 20,000 shares Aggregate market value: $1,294,000.00 Referenced share count: 3,203,334 shares +2 more

5 metrics

Shares to be sold 20,000 shares Common stock covered by the Rule 144 notice

Aggregate market value $1,294,000.00 Value associated with the 20,000 PRO DEX INC common shares in the Rule 144 table

Referenced share count 3,203,334 shares Contextual common share figure shown with the Rule 144 securities information

Acquisition date September 9, 2020 Date of stock option exercise from issuer for the shares to be sold

Proposed sale date September 9, 2026 Date associated with the planned Rule 144 sale of the 20,000 shares

Key Terms

Rule 144, stock option exercise, aggregate market value, person

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

stock option exercise financial

"COMMON | 09/09/2020 | STOCK OPTION EXERCISE | ISSUER"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

aggregate market value financial

"COMMON ... | 20000 | 1294000.00 | 3203334 | 09/09/2026 |"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

person regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

FAQ

What does the Form 144 filing for PDEX disclose about the planned sale?

The Form 144 notice covers a potential sale of 20,000 shares of PRO DEX INC common stock under Rule 144, with a referenced aggregate market value of $1,294,000.00 and a proposed sale date of September 9, 2026.

Who is the stockholder planning to sell PRO DEX INC (PDEX) shares?

The planned Rule 144 sale relates to shares held for the account of Richard Van Kirk Jr., who signed the notice. The filing states information is provided for the person whose account the securities are to be sold.

How many PDEX shares are covered by this Rule 144 notice and what is their value?

The notice identifies 20,000 common shares of PRO DEX INC to be sold. It lists an aggregate market value of $1,294,000.00 associated with these securities in the Rule 144 securities information section.

When were the PRO DEX INC (PDEX) shares to be sold under Rule 144 originally acquired?

The shares covered by the notice were acquired via a stock option exercise on September 9, 2020, from the issuer. This acquisition date is disclosed in the “Securities To Be Sold” section.

What date is associated with the proposed Rule 144 sale of PDEX shares?

The filing references a proposed sale date of September 9, 2026 in the securities information section for the 20,000 common shares of PRO DEX INC.

How many PRO DEX INC (PDEX) shares are referenced as outstanding in the filing?

The Rule 144 securities information table includes a figure of 3,203,334 shares, presented in the same row as the 20,000 shares to be sold, as contextual share information.

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

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Available on EDGAR 09/09/2026 - 10:36 AM Accepted by SEC EDGAR 09/09/2026 - 10:36 AM 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	0001575056
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	PRO DEX INC
SEC File Number	000-14942
Address of Issuer	2361 MCGAW AVENUE IRVINE CALIFORNIA 92614
Phone	949-769-3231
Name of Person for Whose Account the Securities are To Be Sold	Van Kirk Richard Lee Jr
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
Relationship to Issuer	Director

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	THE CHARLES SCHWAB CORPORATION 3000 Schwab Way Westlake TX 76262	20000	1294000.00	3203334	09/09/2026	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	09/09/2020	STOCK OPTION EXERCISE	ISSUER			20000	09/09/2020	NA

* 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

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	09/09/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/28/2026
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	RICHARD VAN KIRK JR
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)