OTTR Otter Tail Corporation

FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN 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 * KNUTSON PAUL L	2. Issuer Name and Ticker or Trading Symbol Otter Tail Corp [ OTTR ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director                    _____ 10% Owner __X__ Officer (give title below)    _____ Other (specify below) VP of Human Resources
(Last)          (First)          (Middle) 215 S CASCADE ST	3. Date of Earliest Transaction (MM/DD/YYYY) 2/6/2022
(Street) FERGUS FALLS, MN 56537-2801 (City)        (State)        (Zip)	4. 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 Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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	2/6/2022		M		825	A	(1)	16577	D
Common Stock	2/6/2022		F		330 (2)	D	$60.8950	16247 (3)	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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		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 of Derivative Security: 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
Restricted Stock Units	(1)	2/6/2022		M			200	2/6/2019 (4)	(4)	Common Stock	0	$0	0	D
Restricted Stock Units	(1)	2/6/2022		M			200	2/6/2020 (4)	(4)	Common Stock	200	$0	200	D
Restricted Stock Units	(1)	2/6/2022		M			175	2/6/2021 (4)	(4)	Common Stock	350	$0	350	D
Restricted Stock Units	(1)	2/6/2022		M			250	2/6/2022 (4)	(4)	Common Stock	750	$0	750	D

Explanation of Responses:
(1)	Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock.
(2)	These shares were withheld by the Corporation to pay taxes due upon vesting of this award, exempt pursuant to Rule 16b-3(e).
(3)	Total direct holdings include shares acquired individually through dividend reinvestment, Employee Stock Purchase Plan and acquired pursuant to Restricted Stock Awards and Performance Award distributions.
(4)	The restricted stock units vest in four equal annual installments beginning the date shown above.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
KNUTSON PAUL L 215 S CASCADE ST FERGUS FALLS, MN 56537-2801			VP of Human Resources

Signatures
/s/ Paul L Knutson by Ella Leapaldt, Attorney-in-Fact		2/8/2022
**Signature of Reporting Person		Date