[Form 3] Proto Labs Inc Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

Proto Labs (PRLB)Chief Technology & AI Officer and indicated no securities are beneficially owned.

The filing was made by one reporting person and includes a Power of Attorney as an exhibit.

10/15/2025 - 10:47 AM

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Kermisch Marc

(Last) (First) (Middle)

5540 PIONEER CREEK

(Street)

MAPLE PLAIN MN 55359

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
10/13/2025

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

4. 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

5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Exhibit List: Exhibit 24-Power of Attorney

No securities are beneficially owned.

	/s/ Kareem S. Tawfic, Attorney-in-Fact	10/15/2025
	** 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 5 (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) disclose on this Form 3?

An officer filed an initial ownership report stating no securities are beneficially owned.

Who is the reporting person’s role at PRLB?

The reporting person is the Chief Technology & AI Officer.

Is this Form 3 filed by an individual or a group?

It is filed by one reporting person.

Does the filing list any direct or indirect holdings?

No. It states no securities are beneficially owned.

What exhibit accompanies this filing?

It includes Exhibit 24 – Power of Attorney.

What is the issuer and ticker on the Form 3?

The issuer is Proto Labs, Inc. with ticker PRLB.

What is the event date noted on the Form 3 for PRLB?

The event date is 10/13/2025.