Proto Labs (NYSE: PRLB) COO reports tax-related share withholding

Rhea-AI Filing Summary

Proto Labs Chief Operations Officer Michael R. Kenison reported a tax-related share withholding transaction. On 02/10/2026, 2,684 shares of common stock were disposed of at $53.18 per share to cover tax obligations, leaving him with 31,842 shares of Proto Labs common stock held directly.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Kenison Michael R.

Role Chief Operations Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	2,684	$53.18	$143K

Holdings After Transaction: Common Stock — 31,842 shares (Direct)

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

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^*

Kenison Michael R.

(Last) (First) (Middle)

5540 PIONEER CREEK DRIVE

(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 Operations Officer

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

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	02/10/2026		F		2,684	D	$53.18	31,842	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:

	/s/ W. Morgan Burns, Attorney-in- Fact	02/12/2026
	** 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 insider transaction did Proto Labs (PRLB) report for its COO?

Proto Labs reported that Chief Operations Officer Michael R. Kenison had 2,684 shares of common stock withheld on February 10, 2026. The shares, valued at $53.18 each, were disposed of to satisfy tax obligations related to equity compensation rather than an open-market sale.

Was the Proto Labs (PRLB) COO’s Form 4 transaction a stock sale?

The transaction was not an open-market stock sale. It was coded “F,” indicating 2,684 shares were disposed of to pay exercise price or tax liability. This type of withholding is typically administrative and linked to equity awards, rather than discretionary selling activity.

How many Proto Labs (PRLB) shares does the COO hold after this Form 4?

After the reported transaction, Chief Operations Officer Michael R. Kenison beneficially owns 31,842 shares of Proto Labs common stock directly. This figure reflects his holdings following the 2,684-share tax-withholding disposition reported for February 10, 2026, under transaction code F.

What price was used for the Proto Labs (PRLB) COO’s tax-withholding shares?

The 2,684 Proto Labs common shares involved in the tax-withholding disposition were valued at $53.18 per share. This price is used for reporting the transaction on Form 4 and reflects the amount applied toward the related tax or exercise liability on the award.

What does transaction code “F” mean on the Proto Labs (PRLB) Form 4?

Transaction code “F” on the Form 4 indicates payment of exercise price or tax liability by delivering securities. For Proto Labs, it shows the COO used 2,684 shares of common stock, at $53.18 per share, to cover obligations tied to his equity compensation.