PDEX

SEC source: 0001553350-22-000736 · ownership.xml · derivative · entry 2

Van Kirk Richard Lee Jr · CIK 0001575056 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 5,000 shares

Expires 2022-09-11

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001553350-22-000736 · ownership.xml · nonDerivative · entry 1

Van Kirk Richard Lee Jr · CIK 0001575056 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,196

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001553350-22-000649 · ownership.xml · nonDerivative · entry 3

Van Kirk Richard Lee Jr · CIK 0001575056 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 83,196

F3 · kind: These purchases were made pursuant to an Employee Stock Purchase Plan in exempt transactions pursuant to Rule 16b-3(c) and Rule 16b-3(d).

SEC source: 0001553350-22-000651 · ownership.xml · nonDerivative · entry 3

Domingo Angelita Rebamontan · CIK 0001903119 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,639

F3 · kind: These purchases were made pursuant to an Employee Stock Purchase Plan in exempt transactions pursuant to Rule 16b-3(c) and Rule 16b-3(d).

SEC source: 0001553350-22-000649 · ownership.xml · nonDerivative · entry 2

Van Kirk Richard Lee Jr · CIK 0001575056 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 82,619

F2 · kind: Represents shares withheld to satisfy tax withholding obligations of the reporting person.

SEC source: 0001553350-22-000649 · ownership.xml · nonDerivative · entry 1

Van Kirk Richard Lee Jr · CIK 0001575056 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,713

F1 · kind: Represents shares issued under a performance award agreement granted to the reporting person on December 5, 2017, pursuant to the Pro-Dex, Inc. 2016 Equity Incentive Plan.

SEC source: 0001553350-22-000651 · ownership.xml · nonDerivative · entry 2

Domingo Angelita Rebamontan · CIK 0001903119 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,609

F2 · kind: Represents shares withheld to satisfy tax withholding obligations of the reporting person.

SEC source: 0001553350-22-000651 · ownership.xml · nonDerivative · entry 1

Domingo Angelita Rebamontan · CIK 0001903119 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,841

F1 · kind: Represents shares issued under a performance award agreement granted to the reporting person on December 5, 2017, pursuant to the Pro-Dex, Inc. 2016 Equity Incentive Plan.

SEC source: 0001553350-22-000650 · ownership.xml · nonDerivative · entry 2

Charlton Alisha · CIK 0001431777 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,477

F2 · kind: Represents shares withheld to satisfy tax withholding obligations of the reporting person.

SEC source: 0001553350-22-000650 · ownership.xml · nonDerivative · entry 1

Charlton Alisha · CIK 0001431777 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,074

F1 · kind: Represents shares issued under a performance award agreement granted to the reporting person on December 5, 2017, pursuant to the Pro-Dex, Inc. 2016 Equity Incentive Plan.

SEC source: 0001553350-22-000431 · ownership.xml · nonDerivative · entry 1

Philp Katrina Marie Kramer · CIK 0001797788 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Spouse

Disclosed balance after: 14,696

F1 · price: The price reported on Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $13.96 to $15.25, inclusive. The reporting person undertakes to provide the issuer, any security holder of the issuer, 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 this footnote (1) to this Form 4.

SEC source: 0001553350-22-000062 · ownership.xml · nonDerivative · entry 1

Van Kirk Richard Lee Jr · CIK 0001575056 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 72,913

F1 · kind: These purchases were made pursuant to an Employee Stock Purchase Plan in exempt transactions pursuant to Rule 16b-3(c) and Rule 16b-3(d).

SEC source: 0001553350-22-000063 · ownership.xml · nonDerivative · entry 1

Domingo Angelita Rebamontan · CIK 0001903119 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,041

F1 · kind: These purchases were made pursuant to an Employee Stock Purchase Plan in exempt transactions pursuant to Rule 16b-3(c) and Rule 16b-3(d).

SEC source: 0001553350-21-001184 · ownership.xml · derivative · entry 5

Charlton Alisha · CIK 0001431777 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,250

Underlying: Common Stock · 1,000 shares

Expires 2040-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively.

SEC source: 0001553350-21-001184 · ownership.xml · derivative · entry 4

Charlton Alisha · CIK 0001431777 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,250

Underlying: Common Stock · 1,000 shares

Expires 2038-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively.

SEC source: 0001553350-21-001184 · ownership.xml · derivative · entry 3

Charlton Alisha · CIK 0001431777 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,250

Underlying: Common Stock · 1,000 shares

Expires 2036-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively.

SEC source: 0001553350-21-001184 · ownership.xml · derivative · entry 2

Charlton Alisha · CIK 0001431777 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,250

Underlying: Common Stock · 1,000 shares

Expires 2034-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively.

SEC source: 0001553350-21-001184 · ownership.xml · derivative · entry 1

Charlton Alisha · CIK 0001431777 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,250

Underlying: Common Stock · 1,000 shares

Expires 2032-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively.

SEC source: 0001553350-21-001076 · ownership.xml · nonDerivative · entry 1

Farrell William James III · CIK 0001568046 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By IRA

Disclosed balance after: 5,100

F1 · price: The price reported on Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $20.49 to $20.82, 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 (1) to this Form.

SEC source: 0001553350-21-000806 · ownership.xml · nonDerivative · entry 1

Philp Katrina Marie Kramer · CIK 0001797788 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Spouse

Disclosed balance after: 10,264

F1 · price: The price reported on Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $24.27 to $25.00, 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 (1) to this Form.

SEC source: 0001553350-22-000209 · ownership.xml · nonDerivative · entry 1

Philp Katrina Marie Kramer · CIK 0001797788 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Spouse

Disclosed balance after: 10,796

F1 · shares: On September 14, 2021, the reporting person filed a Form 4 that inadvertently reported that her spouse acquired 3,468 shares of the issuer's common stock on September 13, 2021 at a weighted average exercise price of $24.41 per share and that, following that acquisition, she beneficially owned 10,264 shares of the issuer's common stock. In fact, as reported in this amendment, the reporting person's spouse acquired 4,000 shares of the issuer's common stock on that same date and at that same weighted average exercise price, resulting in the reporting person beneficially owning 10,796 shares of the issuer's common stock.

F2 · price: The price reported on Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $24.04 to $25.00, inclusive. The reporting person undertakes to provide the issuer, any security holder of the issuer, 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.

F1 · balance_after: On September 14, 2021, the reporting person filed a Form 4 that inadvertently reported that her spouse acquired 3,468 shares of the issuer's common stock on September 13, 2021 at a weighted average exercise price of $24.41 per share and that, following that acquisition, she beneficially owned 10,264 shares of the issuer's common stock. In fact, as reported in this amendment, the reporting person's spouse acquired 4,000 shares of the issuer's common stock on that same date and at that same weighted average exercise price, resulting in the reporting person beneficially owning 10,796 shares of the issuer's common stock.

SEC source: 0001553350-21-000803 · ownership.xml · derivative · entry 3

Van Kirk Richard Lee Jr · CIK 0001575056 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 25,000 shares

Expires 2021-09-12

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001553350-21-000803 · ownership.xml · nonDerivative · entry 2

Van Kirk Richard Lee Jr · CIK 0001575056 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 72,544

SEC source: 0001553350-21-000803 · ownership.xml · nonDerivative · entry 1

Van Kirk Richard Lee Jr · CIK 0001575056 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 74,399

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001553350-21-000618 · ownership.xml · nonDerivative · entry 1

Van Kirk Richard Lee Jr · CIK 0001575056 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,399

F1 · kind: These purchases were made pursuant to an Employee Stock Purchase Plan in exempt transactions pursuant to Rule 16b-3(c) and Rule 16b-3(d).

SEC source: 0001553350-21-000469 · ownership.xml · nonDerivative · entry 1

Charlton Alisha · CIK 0001431777 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,774

SEC source: 0001553350-21-000159 · ownership.xml · derivative · entry 1

Charlton Alisha · CIK 0001431777 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,500

Underlying: Common Stock · 4,250 shares

Expires 2031-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively.

SEC source: 0001553350-21-000158 · ownership.xml · derivative · entry 1

HOVDA DAVID · CIK 0001237938 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,500

Underlying: Common Stock · 4,000 shares

Expires 2031-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively.

SEC source: 0001553350-21-000160 · ownership.xml · derivative · entry 1

CABILLOT RAYMOND E · CIK 0001361476 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,000

Underlying: Common Stock · 4,000 shares

Expires 2031-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively.

SEC source: 0001553350-21-000157 · ownership.xml · derivative · entry 1

Farrell William James III · CIK 0001568046 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,000

Underlying: Common Stock · 4,000 shares

Expires 2031-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively.

SEC source: 0001553350-21-000156 · ownership.xml · derivative · entry 1

Van Kirk Richard Lee Jr · CIK 0001575056 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 138,000

Underlying: Common Stock · 18,000 shares

Expires 2031-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively.

SEC source: 0001553350-21-000154 · ownership.xml · derivative · entry 1

Philp Katrina Marie Kramer · CIK 0001797788 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,000

Underlying: Common Stock · 4,000 shares

Expires 2031-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively.

SEC source: 0001553350-21-000155 · ownership.xml · derivative · entry 1

Swenson Nicholas John · CIK 0001478067 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,000

Underlying: Common Stock · 4,000 shares

Expires 2031-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively.

SEC source: 0001553350-21-000128 · ownership.xml · nonDerivative · entry 2

Farrell William James III · CIK 0001568046 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By IRA

Disclosed balance after: 3,100

SEC source: 0001553350-21-000089 · ownership.xml · nonDerivative · entry 1

Van Kirk Richard Lee Jr · CIK 0001575056 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,101

F1 · kind: These purchases were made pursuant to an Employee Stock Purchase Plan in exempt transactions pursuant to Rule 16b-3(c) and Rule 16b-3(d).

SEC source: 0001553350-20-001104 · ownership.xml · nonDerivative · entry 1

Swenson Nicholas John · CIK 0001478067 · Director · 10% owner

AO Partners I, LP · CIK 0001542769 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By AO Partners I, LP

Disclosed balance after: 927,177

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $39.495 to $39.67, 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 (1) to this Form.

SEC source: 0001553350-21-000086 · ownership.xml · derivative · entry 5

CABILLOT RAYMOND E · CIK 0001361476 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,000

Underlying: Common Stock · 4,000 shares

Expires 2040-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively. Explanation of Responses:

SEC source: 0001553350-21-000086 · ownership.xml · derivative · entry 4

CABILLOT RAYMOND E · CIK 0001361476 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,000

Underlying: Common Stock · 4,000 shares

Expires 2038-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively. Explanation of Responses:

SEC source: 0001553350-21-000086 · ownership.xml · derivative · entry 3

CABILLOT RAYMOND E · CIK 0001361476 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,000

Underlying: Common Stock · 4,000 shares

Expires 2036-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively. Explanation of Responses:

SEC source: 0001553350-21-000086 · ownership.xml · derivative · entry 2

CABILLOT RAYMOND E · CIK 0001361476 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,000

Underlying: Common Stock · 4,000 shares

Expires 2034-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively. Explanation of Responses:

SEC source: 0001553350-21-000086 · ownership.xml · derivative · entry 1

CABILLOT RAYMOND E · CIK 0001361476 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,000

Underlying: Common Stock · 4,000 shares

Expires 2032-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively. Explanation of Responses:

SEC source: 0001553350-21-000085 · ownership.xml · derivative · entry 5

Swenson Nicholas John · CIK 0001478067 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,000

Underlying: Common Stock · 4,000 shares

Expires 2040-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively. Explanation of Responses:

SEC source: 0001553350-21-000085 · ownership.xml · derivative · entry 4

Swenson Nicholas John · CIK 0001478067 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,000

Underlying: Common Stock · 4,000 shares

Expires 2038-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively. Explanation of Responses:

SEC source: 0001553350-21-000085 · ownership.xml · derivative · entry 3

Swenson Nicholas John · CIK 0001478067 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,000

Underlying: Common Stock · 4,000 shares

Expires 2036-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively. Explanation of Responses:

SEC source: 0001553350-21-000085 · ownership.xml · derivative · entry 2

Swenson Nicholas John · CIK 0001478067 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,000

Underlying: Common Stock · 4,000 shares

Expires 2034-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively. Explanation of Responses:

SEC source: 0001553350-21-000085 · ownership.xml · derivative · entry 1

Swenson Nicholas John · CIK 0001478067 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,000

Underlying: Common Stock · 4,000 shares

Expires 2032-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively. Explanation of Responses:

SEC source: 0001553350-21-000084 · ownership.xml · derivative · entry 5

Farrell William James III · CIK 0001568046 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,000

Underlying: Common Stock · 4,000 shares

Expires 2040-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively. Explanation of Responses:

SEC source: 0001553350-21-000084 · ownership.xml · derivative · entry 4

Farrell William James III · CIK 0001568046 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,000

Underlying: Common Stock · 4,000 shares

Expires 2038-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively. Explanation of Responses:

SEC source: 0001553350-21-000084 · ownership.xml · derivative · entry 3

Farrell William James III · CIK 0001568046 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,000

Underlying: Common Stock · 4,000 shares

Expires 2036-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively. Explanation of Responses:

SEC source: 0001553350-21-000084 · ownership.xml · derivative · entry 2

Farrell William James III · CIK 0001568046 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,000

Underlying: Common Stock · 4,000 shares

Expires 2034-07-01

F1 · security: These options were awarded under Pro-Dex's 2016 Equity Incentive Plan. The percentage of options that may vest and become exercisable, if any, are 100%, 50%, and 25%, respectively, based upon the volume-weighted average price of Pro-Dex's common stock equaling or exceeding the applicable exercise price for the 60 trading days immediately preceding the date the option becomes exercisable, six months from the date the option becomes exercisable, or twelve months from the date the option becomes exercisable, respectively. Explanation of Responses: