Otter Tail Corp — Director's Dealing 2024

Feb 8, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Otter Tail Corp (OTTR)
CIK: 0001466593
Period of Report: 2024-02-06

Reporting Person: ROGELSTAD TIMOTHY J (Sr VP, Electric Platform)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-02-06	Common Stock	A	12000	$93.33	Acquired	56287	Direct
2024-02-06	Common Stock	F	5956	$93.33	Disposed	50331	Direct
2024-02-06	Common Stock	M	1825	$93.33	Acquired	52156	Direct
2024-02-06	Common Stock	F	887	$93.33	Disposed	51269	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-02-06	Restricted Stock Units	$	A	1400	Acquired		Common Stock (1400)	Direct
2024-02-06	Restricted Stock Units	$	M	400	Disposed		Common Stock (0)	Direct
2024-02-06	Restricted Stock Units	$	M	575	Disposed		Common Stock (575)	Direct
2024-02-06	Restricted Stock Units	$	M	400	Disposed		Common Stock (800)	Direct
2024-02-06	Restricted Stock Units	$	M	450	Disposed		Common Stock (1350)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	3165	Indirect

Footnotes

F1: Represents shares received upon the vesting of certain performance criteria in connection with a Performance Share Award (granted in 2021).

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

F4: Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan, and shares acquired pursuant to Restricted Stock Awards and
Performance Share Awards.

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