Pro-Dex CEO sells 765 shares near $59 average

Pro-Dex’s CEO and director reported pre-planned open-market sales totaling 765 common shares on September 11, 2026 under a Rule 10b5-1 trading plan.

Rhea-AI Filing Summary

PRO DEX INC (PDEX) reports that Chief Executive Officer and director Richard Lee Van Kirk Jr sold 765 shares of common stock on September 11, 2026 in two open-market or private transactions. The sales, executed under a Rule 10b5-1 trading plan adopted on May 28, 2026, occurred at weighted average prices of $58.94 for 290 shares (with individual prices ranging from $58.36 to $59.35) and $59.62 for 475 shares (with individual prices ranging from $59.39 to $59.91).

Insider Trade Summary 10b5-1

Net Seller: 765 shares

Net Sell 2 txns

Insider Van Kirk Richard Lee Jr

Role Chief Executive Officer

Sold 765 shs ($45K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	290	$58.94	$17K
Sale	Common Stock F1, F3	475	$59.62	$28K

Holdings After Transaction: Common Stock — 79,228 shares (Direct)

Footnotes (3)

1. F1. The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 28, 2026.
2. F2. The price reported on Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $58.36 to $59.35, inclusive. The reporting person undertakes to provide Pro-Dex, Inc., any security holder of Pro-Dex, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form.
3. F3. The price reported on Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $59.39 to $59.91, inclusive. The reporting person undertakes to provide Pro-Dex, Inc., any security holder of Pro-Dex, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (3) to this Form.

Key Figures

Total shares sold: 765 shares First transaction size: 290 shares First transaction weighted average price: $58.94 per share +5 more

8 metrics

Total shares sold 765 shares Common stock sales by CEO on September 11, 2026

First transaction size 290 shares Common stock sold at a weighted average price of $58.94

First transaction weighted average price $58.94 per share Common stock sale of 290 shares; trades ranged from $58.36 to $59.35

First transaction price range $58.36–$59.35 per share Multiple trades underlying the 290-share sale

Second transaction size 475 shares Common stock sold at a weighted average price of $59.62

Second transaction weighted average price $59.62 per share Common stock sale of 475 shares; trades ranged from $59.39 to $59.91

Second transaction price range $59.39–$59.91 per share Multiple trades underlying the 475-share sale

Rule 10b5-1 plan adoption date May 28, 2026 Plan under which the reported sales were effected

Key Terms

Rule 10b5-1 trading plan, weighted average price, open market or private transaction

3 terms

Rule 10b5-1 trading plan regulatory

"The sales reported ... were effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average price financial

"The price reported on Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

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 PDEX report for its CEO on September 11, 2026?

PRO DEX INC reported that CEO and director Richard Lee Van Kirk Jr sold 765 shares of common stock on September 11, 2026 in two open-market or private transactions under a Rule 10b5-1 trading plan.

How many PDEX shares did the CEO sell in each transaction and at what prices?

The CEO sold 290 shares at a weighted average price of $58.94 and 475 shares at a weighted average price of $59.62. Both prices are weighted averages of multiple trades within stated ranges.

Were the September 11, 2026 PDEX insider sales made under a Rule 10b5-1 plan?

Yes. The filing states the sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 28, 2026, indicating the trades were pre-arranged under that plan.

What were the trading ranges for the PDEX shares sold by the CEO?

For the 290-share sale, trades occurred between $58.36 and $59.35. For the 475-share sale, trades occurred between $59.39 and $59.91, with the reported prices representing weighted averages of these multiple transactions.

Does the Form 4 state how many PDEX shares the CEO held after these sales?

No. For both reported transactions, the Form 4 leaves the field for total shares following the transaction blank, so the filing does not state the CEO’s post-transaction holdings.

What type of security did the CEO of PDEX sell on September 11, 2026?

The CEO sold common stock of PRO DEX INC in both reported transactions on September 11, 2026, as disclosed in the Form 4 insider filing.

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

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Available on EDGAR 09/14/2026 - 07:30 PM Accepted by SEC EDGAR 09/14/2026 - 07:30 PM Learn about SEC filing dates

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).

X

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^*

Van Kirk Richard Lee Jr

(Last) (First) (Middle)

2361 MCGAW ST

(Street)

IRVINE CALIFORNIA 92614

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
PRO DEX INC [ PDEX ]

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)
09/11/2026

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	09/11/2026		S(1)		290	D	$58.94(2)	79,703	D
Common Stock	09/11/2026		S(1)		475	D	$59.62(3)	79,228	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. The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 28, 2026.

2. The price reported on Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $58.36 to $59.35, inclusive. The reporting person undertakes to provide Pro-Dex, Inc., any security holder of Pro-Dex, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form.

3. The price reported on Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $59.39 to $59.91, inclusive. The reporting person undertakes to provide Pro-Dex, Inc., any security holder of Pro-Dex, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (3) to this Form.

	/s/ Alisha Charlton as attorney-in-fact for Richard Van Kirk	09/14/2026
	** 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)