Otter Tail Corp — Director's Dealing 2021

Feb 9, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Otter Tail Corp (OTTR)
CIK: 0001466593
Period of Report: 2021-02-06

Reporting Person: KNUTSON PAUL L (VP of Human Resources)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-02-06	Common Stock	M	775	—	Acquired	13877	Direct
2021-02-06	Common Stock	F	295	$41.6625	Disposed	13582	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-02-06	Restricted Stock Units	$	M	200	Disposed		Common Stock (0)	Direct
2021-02-06	Restricted Stock Units	$	M	200	Disposed		Common Stock (200)	Direct
2021-02-06	Restricted Stock Units	$	M	200	Disposed		Common Stock (400)	Direct
2021-02-06	Restricted Stock Units	$	M	175	Disposed		Common Stock (525)	Direct

Footnotes

F1: Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock.

F2: These shares were withheld by the Corporation to pay taxes due upon vesting of this award, exempt pursuant to Rule 16b-3(e).

F3: Total direct holdings include shares acquired individually through the dividend reinvestment plan, Employee Stock Purchase Plan and acquired pursuant to Restricted Stock Awards and Performance Award distributions.

F4: The restricted stock units vest in four equal annual installments which began February 6, 2018.

F5: The restricted stock units vest in four equal annual installments beginning the date shown above.