Proto Labs director gets 2,210 stock units

Gawlick Rainer reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Gawlick Rainer reported acquisition or exercise transactions in this Form 4 filing.

Proto Labs Inc director Rainer Gawlick received an award of 2,210 deferred stock units tied to common stock. The units were granted at no cash cost and increase his direct holdings to 46,093 common shares and units.

The deferred stock units vest in full on the earlier of the first anniversary of the grant date or the date of the 2027 Annual Meeting of Shareholders, but must be retained until his service on the Board of Directors ends. This filing reflects routine, compensation-related equity, not an open-market purchase or sale.

Insider Trade Summary

Grant/Award: 2,210 shares

Grant/Award 1 txn

Insider Gawlick Rainer

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	2,210	$0.00	$0.00

Holdings After Transaction: Common Stock — 46,093 shares (Direct)

Footnotes (1)

1. F1. Deferred stock units that vest in full on the earlier of the first anniversary of the grant date or the date of the 2027 Annual Meeting of Shareholders but must be retained until the reporting person's service on the Company's Board of Directors ends.

Key Figures

Deferred stock units granted: 2,210 units Price per unit: $0.0000 Holdings after transaction: 46,093 shares/units +1 more

4 metrics

Deferred stock units granted 2,210 units Grant/award on May 19, 2026

Price per unit $0.0000 Grant carried no cash purchase price

Holdings after transaction 46,093 shares/units Direct common stock and units after grant

Vesting trigger Earlier of 1-year anniversary or 2027 meeting Vests by first anniversary or 2027 Annual Meeting of Shareholders

Key Terms

Deferred stock units, Annual Meeting of Shareholders, Board of Directors, Grant, award, or other acquisition

4 terms

Deferred stock units financial

"Deferred stock units that vest in full on the earlier of the first anniversary of the grant date"

Deferred stock units are promises from a company to give an employee shares of stock at a future date, often after certain conditions are met or after leaving the company. They function like a form of delayed compensation, allowing employees to earn shares over time. For investors, they represent potential future ownership in the company, but do not provide immediate voting rights or dividends until the shares are actually received.

Annual Meeting of Shareholders regulatory

"the date of the 2027 Annual Meeting of Shareholders but must be retained"

A yearly gathering where a company’s owners (shareholders) vote on key items like electing the board, approving executive pay, and ratifying auditors, and receive updates on performance and strategy. Think of it as an annual town hall for owners: it matters to investors because outcomes and disclosures can affect leadership, corporate direction, dividend and governance policies, and therefore the company’s risk and potential return.

Board of Directors financial

"until the reporting person's service on the Company's Board of Directors ends"

The Board of Directors is a group of people chosen by a company's owners to help make big decisions and oversee how the company is run. They act like a team of advisors or managers, making sure the company stays on track and meets its goals. Their choices can influence the company's success and how it grows.

Grant, award, or other acquisition financial

"transaction_code_description: Grant, award, or other acquisition"

FAQ

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

What insider transaction did Proto Labs (PRLB) report for Rainer Gawlick?

Proto Labs reported that director Rainer Gawlick received 2,210 deferred stock units tied to common stock as a compensation award. The grant carried no cash purchase price and increased his direct holdings to 46,093 common shares and units after the transaction.

Is the Proto Labs (PRLB) Form 4 for Rainer Gawlick a stock purchase or sale?

The Form 4 does not show a market purchase or sale. Instead, it records a grant of 2,210 deferred stock units as compensation, coded as a grant or award acquisition, with a price per unit of $0.0000 rather than an open-market transaction value.

How many Proto Labs (PRLB) shares does Rainer Gawlick hold after this grant?

After receiving 2,210 deferred stock units in this transaction, Rainer Gawlick directly holds 46,093 common shares and units of Proto Labs. This total reflects his position immediately following the award as reported in the Form 4 insider filing.

When do Rainer Gawlick’s new Proto Labs (PRLB) deferred stock units vest?

The deferred stock units vest in full on the earlier of the first anniversary of the grant date or the date of the 2027 Annual Meeting of Shareholders. Even after vesting, they must be retained until his service on Proto Labs’ Board of Directors ends.

Are Rainer Gawlick’s new Proto Labs (PRLB) stock units subject to holding requirements?

Yes. The deferred stock units must be retained until Rainer Gawlick’s service on Proto Labs’ Board of Directors ends. Although they vest by the first grant anniversary or the 2027 Annual Meeting, this holding requirement extends their effective lock-up period.

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

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Accepted by SEC EDGAR 05/21/2026 - 04:06 PM EDT 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^*

Gawlick Rainer

(Last) (First) (Middle)

5540 PIONEER CREEK DRIVE

(Street)

MAPLE PLAIN MINNESOTA 55359

(City) (State) (Zip)

UNITED STATES

(Country)

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

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)
05/19/2026

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	05/19/2026		A		2,210(1)	A	$0	46,093	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. Deferred stock units that vest in full on the earlier of the first anniversary of the grant date or the date of the 2027 Annual Meeting of Shareholders but must be retained until the reporting person's service on the Company's Board of Directors ends.

Remarks:

	/s/ W. Morgan Burns, Attorney-in-Fact	05/21/2026
	** 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)