PROCEPT BioRobotics grants Michael Mack stock awards

One-third of each award vests on October 2, 2027, with one-third of the remaining awards vesting on each of the second and third anniversaries, subject to continued service.

Rhea-AI Filing Summary

PROCEPT BioRobotics Corp director Michael Mack received 7,727 restricted stock units (RSUs) and a stock option covering 12,191 shares of common stock on October 2, 2026. Each RSU represents a contingent right to receive one share. The option has a $17.16 exercise price per share and expires October 1, 2036.

Insider Trade Summary

Grant/Award: 19,918 shares

Grant/Award 2 txns

Insider Mack Michael

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy) F2	12,191	$0.00	$0.00
Grant/Award	Common Stock F1	7,727	$0.00	$0.00

Holdings After Transaction: Stock Option (Right to Buy) — 12,191 contracts (Direct); Common Stock — 7,727 shares (Direct)

Footnotes (2)

1. F1. 1. These securities are restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of Common Stock. One-third of the RSUs shall vest on October 2, 2027, with one-third of the remaining RSUs vesting annually on the second and third anniversary thereof, subject to the Reporting Person continuing as a service provider through such dates.
2. F2. This Stock Option was granted on October 2, 2026, and one-third of the shares subject to the Stock Option shall vest on October 2, 2027, with one-third of the remaining shares subject to the Stock Option vesting annually on each of the second and third anniversary thereof, subject to the Reporting Person continuing as a service provider through such dates.

Key Figures

RSUs granted: 7,727 RSUs Shares subject to stock option: 12,191 shares Exercise price: $17.16 per share +2 more

5 metrics

RSUs granted 7,727 RSUs Awarded October 2, 2026

Shares subject to stock option 12,191 shares Option granted October 2, 2026

Exercise price $17.16 per share Stock option

First vesting date October 2, 2027 One-third of each award

Option expiration October 1, 2036 Stock option

Key Terms

restricted stock units (RSUs), contingent right, vest, exercise price

4 terms

restricted stock units (RSUs) financial

"These securities are restricted stock units (RSUs)."

Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.

contingent right financial

"Each RSU represents a contingent right to receive one share"

vest financial

"shall vest on October 2, 2027"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

exercise price financial

"conversion_or_exercise_price"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

FAQ

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

What awards did PRCT director Michael Mack receive?

Michael Mack received 7,727 RSUs and a stock option covering 12,191 shares of common stock on October 2, 2026. Each RSU represents a contingent right to receive one share.

When do Michael Mack’s PRCT awards vest?

One-third of each award vests on October 2, 2027, and one-third of the remaining RSUs and option shares vests annually on the second and third anniversaries. Vesting is subject to Mack continuing as a service provider through those dates.

What are the exercise price and expiration date of Michael Mack’s PRCT option?

The option has a $17.16 exercise price per share and expires on October 1, 2036.

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

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Available on EDGAR 10/05/2026 - 04:10 PM Accepted by SEC EDGAR 10/05/2026 - 04:10 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).

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^*

Mack Michael

(Last) (First) (Middle)

C/O PROCEPT BIOROBOTICS CORPORATION

150 BAYTECH DR.

(Street)

SAN JOSE CALIFORNIA 95134

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
PROCEPT BioRobotics Corp [ PRCT ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/02/2026

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	10/02/2026		A		7,727(1)	A	$0	7,727	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
Stock Option (Right to Buy)	$17.16	10/02/2026		A		12,191		(2)	10/01/2036	Common Stock	12,191	$0	12,191	D

Explanation of Responses:

1. 1. These securities are restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of Common Stock. One-third of the RSUs shall vest on October 2, 2027, with one-third of the remaining RSUs vesting annually on the second and third anniversary thereof, subject to the Reporting Person continuing as a service provider through such dates.

2. This Stock Option was granted on October 2, 2026, and one-third of the shares subject to the Stock Option shall vest on October 2, 2027, with one-third of the remaining shares subject to the Stock Option vesting annually on each of the second and third anniversary thereof, subject to the Reporting Person continuing as a service provider through such dates.

Remarks:

	/s/ Jonathan Stone, Attorney-in-Fact for Michael Mack	10/05/2026
	** 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)