Proto Labs (PRLB) COO logs 10b5-1 stock sale and tax trade

Rhea-AI Filing Summary

Proto Labs Inc Chief Operations Officer Michael R. Kenison reported two transactions in company common stock. On February 17, 2026, he sold 5,000 shares in an open-market transaction at a weighted average price of $66.463 per share under a pre-arranged Rule 10b5-1 trading plan, leaving him with 25,302 shares directly held afterward.

Earlier, on February 13, 2026, he disposed of 1,540 shares at $67.52 per share to cover tax obligations through a stock withholding transaction, after which his direct holdings were 30,302 shares. The open-market sale prices ranged from $66.01 to $66.87 per share.

Insider Trade Summary

Net Seller: 5,000 shares ($332,315)

Net Sell 2 txns

Insider Kenison Michael R.

Role Chief Operations Officer

Sold 5,000 shs ($332K)

Type	Security	Shares	Price	Value
Sale	Common Stock	5,000	$66.463	$332K
Tax Withholding	Common Stock	1,540	$67.52	$104K

Holdings After Transaction: Common Stock — 25,302 shares (Direct)

Footnotes (1)

1. This transaction was executed pursuant to a Rule 10b5 1 trading plan adopted by the Reporting Person on August 15, 2025. Reflects the weighted average price of 5,000 shares of common stock of Proto Labs Inc. sold by the reporting person in multiple transactions on February 17, 2026, with sale prices ranging from $66.01 to $66.87 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

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).

X

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)
02/13/2026

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	02/13/2026		F		1,540	D	$67.52	30,302	D
Common Stock	02/17/2026		S(1)		5,000	D	$66.463(2)	25,302	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:

1. This transaction was executed pursuant to a Rule 10b5 1 trading plan adopted by the Reporting Person on August 15, 2025.

2. Reflects the weighted average price of 5,000 shares of common stock of Proto Labs Inc. sold by the reporting person in multiple transactions on February 17, 2026, with sale prices ranging from $66.01 to $66.87 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Remarks:

	/s/ W. Morgan Burns, Attorney-in-Fact	02/18/2026
	** 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 transactions did Proto Labs (PRLB) report for Michael R. Kenison?

Proto Labs reported that COO Michael R. Kenison sold 5,000 common shares in an open-market transaction and disposed of 1,540 shares for tax withholding. Both transactions involved directly held shares and were completed in mid-February 2026 at prices around the mid-$60 range.

How many Proto Labs (PRLB) shares did the COO sell in the open market?

Michael R. Kenison sold 5,000 Proto Labs common shares in an open-market transaction. The weighted average sale price was $66.463 per share, with individual trade prices ranging from $66.01 to $66.87. This sale was executed under a Rule 10b5-1 trading plan.

What is the purpose of the 1,540-share disposition reported for Proto Labs (PRLB)?

The 1,540-share transaction was a tax-withholding disposition, not a regular market sale. Proto Labs’ COO used shares valued at $67.52 each to satisfy tax obligations related to equity compensation, reducing his directly held shares while covering the associated tax liability.

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

After the February 17, 2026 open-market sale, Michael R. Kenison directly holds 25,302 Proto Labs common shares. This figure reflects the impact of both the 1,540-share tax-withholding disposition on February 13 and the 5,000-share sale completed four days later.

Was the Proto Labs (PRLB) insider sale made under a Rule 10b5-1 plan?

Yes, the 5,000-share open-market sale was executed under a Rule 10b5-1 trading plan adopted on August 15, 2025. Such plans pre-schedule trades to help insiders systematically sell shares, reducing concerns about trading on nonpublic information.

What price range did Proto Labs (PRLB) shares sell for in the COO’s planned trade?

In the planned 5,000-share sale, Proto Labs stock traded between $66.01 and $66.87 per share. The reported weighted average price was $66.463, and the insider has offered to provide detailed trade breakdowns upon request to regulators, the issuer, or shareholders.