Proto Labs (PRLB) tech chief receives new stock and option awards

Rhea-AI Filing Summary

Proto Labs Inc Chief Technology & AI Officer Marc Kermisch reported equity awards on February 25, 2026. He acquired an employee stock option for 5,095 shares at an exercise price of $0.00 per share and a grant of 2,795 shares of common stock.

The filing explains that the common stock reflects restricted stock units, with 25% of the shares scheduled to vest on February 25, 2027, and additional 25% tranches vesting on each February 25 thereafter until fully vested. Following the award, he directly owned 6,513 shares of common stock.

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

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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^*

Kermisch Marc

(Last) (First) (Middle)

5540 PIONEER CREEK

(Street)

MAPLE PLAIN MN 55359

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Proto Labs Inc [ PRLB ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Technology & AI Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/25/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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	02/25/2026		A		2,795(1)	A	$0	6,513	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
Employee Stock Option (right to buy)	$62.63	02/25/2026		A		5,095		(2)	02/25/2036	Common Stock	5,095	$0	5,095	D

Explanation of Responses:

1. Restricted Stock Units that vest as follows: 25% of shares subject to the award will vest on February 25, 2027, and on each February 25th thereafter until all shares subject to the award are fully vested.

2. 25% of shares subject to the award will vest on February 25, 2027, and on each February 25th thereafter until all shares subject to the award are fully vested.

Remarks:

	/s/ W. Morgan Burns, Attorney-in-Fact	02/27/2026
	** 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.

FAQ

What did Proto Labs (PRLB) executive Marc Kermisch report on this Form 4?

Marc Kermisch reported equity compensation awards from Proto Labs. He received an employee stock option for 5,095 shares at $0.00 per share and a grant of 2,795 shares of common stock, all held directly as part of his executive compensation.

How many Proto Labs (PRLB) options were granted to Marc Kermisch?

He was granted an employee stock option covering 5,095 shares of Proto Labs common stock. The option was reported with an exercise price of $0.00 per share, indicating it is a compensatory award rather than a market purchase of existing shares.

What restricted stock units did Marc Kermisch receive from Proto Labs (PRLB)?

He received 2,795 shares of Proto Labs common stock, reported as restricted stock units. These RSUs vest over time, providing stock-based compensation that aligns his interests with shareholders as service conditions are satisfied over multiple future vesting dates.

What is the vesting schedule for Marc Kermisch’s Proto Labs (PRLB) RSUs?

The RSUs vest in four equal parts. Twenty-five percent of the shares vest on February 25, 2027, with an additional 25% vesting on each February 25 thereafter until all shares subject to the award are fully vested, assuming continued service.

How many Proto Labs (PRLB) shares did Marc Kermisch own after these awards?

After the reported awards, Marc Kermisch directly owned 6,513 shares of Proto Labs common stock. This total reflects his updated direct holdings following the grant of 2,795 restricted shares included in this Form 4 filing.

Does this Proto Labs (PRLB) Form 4 show insider buying or selling in the market?

The Form 4 shows equity awards, not open-market trading. Transactions are coded as grant or award acquisitions at $0.00 per share, reflecting stock-based compensation rather than discretionary buying or selling of Proto Labs shares in the public market.