FORM 3
        
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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

1. Name and Address of Reporting Person *

Schumacher Daniel
2. Date of Event Requiring Statement (MM/DD/YYYY)
12/1/2021 

3. Issuer Name and Ticker or Trading Symbol

Proto Labs Inc [PRLB]
(Last)        (First)        (Middle)

5540 PIONEER CREEK DRIVE
4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                          _____ 10% Owner
___X___ Officer (give title below)        _____ Other (specify below)
Chief Financial Officer /
(Street)

MAPLE PLAIN, MN 55359      

(City)              (State)              (Zip)
5. If Amendment, Date Original Filed(MM/DD/YYYY)
 

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)
Common Stock 3919 D  

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(MM/DD/YYYY)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date ExercisableExpiration DateTitleAmount or Number of Shares
Employee Stock Option (right to buy)  (1)5/16/2028 Common Stock 186 $117.5500 D  
Employee Stock Option (right to buy)  (2)5/15/2029 Common Stock 532 $106.8500 D  
Employee Stock Option (right to buy)  (3)5/20/2030 Common Stock 1025 $117.0000 D  
Employee Stock Option (right to buy)  (4)5/18/2031 Common Stock 1936 $95.4000 D  

Explanation of Responses:
(1) The option vests as to 25% of the shares in four annual installments beginning on May 20, 2019.
(2) The option vests as follows: 177 shares vested on each May 20, 2020 and May 20, 2021; 177 shares vest on May 20, 2022; and 178 shares vest on May 20, 2023.
(3) The option vests as follows: 256 shares vested on May 20, 2021; 256 shares vest on each May 20, 2022 and May 20, 2023; and 257 shares vest on May 20, 2024.
(4) The option vests as to 25% of the shares in four annual installments beginning on May 20, 2022

Remarks:
Exhibit List: Exhibit 24-Power of Attorney
No securities beneficially owned

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Schumacher Daniel
5540 PIONEER CREEK DRIVE
MAPLE PLAIN, MN 55359


Chief Financial Officer

Signatures
/s/ W. Morgan Burns, Attorney-in-Fact12/3/2021
**Signature of Reporting PersonDate

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