MACFARLANE CHARLES S (President & CEO) received a stock award from OTTER TAIL CORP

Compensation award — not an open‑market transaction. Less informative as a directional signal.

A · 1 award

MACFARLANE CHARLES S

Filed: 2/13/2025ACC: 0001466593-25-000023

InsiderMACFARLANE CHARLES SCIK 1278053

→

IssuerOTTER TAIL CORPCIK 1466593

Officer· President & CEO

Since Feb 2019

+30.91K

Net shares

Net buyer

$1.63M

Total sold

Open market trades

0B · 0S

Total transactions

51.34K acquired · 20.43K disposed

Non-Derivative Transactions2

Common Stock

Direct

A · Award

+41.44K

Price / share

$79.61

Trade value

$3.30M

% of position

20.7%

2/12/2025

200.49K→241.93K

Common Stock

Direct

F · Tax Withholding

−20.43K

Price / share

$79.61

Trade value

$1.63M

% of position

8.4%

2/12/2025

241.93K→221.50K

Total

Net shares

+21K

Net value

$1.67M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	2/12/2025	A · Award	+41.44K	$79.61	$3.30M	20.7%	200.49K	241.93K
Common Stock Direct	2/12/2025	F · Tax Withholding	−20.43K	$79.61	$1.63M	8.4%	241.93K	221.50K
Total			+21K		$1.67M

Derivative Transactions1

Restricted Stock Units

Direct

A · Award

Converts to

Common Stock

9.90K shares

+9.90K

Strike price

Held after

9.90K

Exercisable

—

2/11/2025

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Restricted Stock Units Direct	Common Stock9.90K shares	2/11/2025	A · Award	+9.90K		—	9.90K

Non-Derivative Holdings (Post-Transaction)2

Common Stock

Indirect

Shares owned75.46K

Common Stock

Indirect

Shares owned2.97K

Total

78.43K indirect78.43K

Security Title	Shares Owned	Ownership Type
Common Stock	75.46K	Indirect
Common Stock	2.97K	Indirect
Total	78.43K	78.43K indirect

Derivative Holdings (Post-Transaction)3

Restricted Stock Units

Direct

Underlying security

Common Stock

Underlying shares

5.92K

Shares owned

5.92K

Exercise price

Expiration

—

Exercise window

—

Restricted Stock Units

Direct

Underlying security

Common Stock

Underlying shares

Shares owned

Exercise price

Expiration

—

Exercise window

—

Restricted Stock Units

Direct

Underlying security

Common Stock

Underlying shares

2.17K

Shares owned

2.17K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

13.10K

Owned

13.10K

Security	Underlying	Exercise Window	Expiration	Underlying Shares	Shares Owned
Restricted Stock Units Direct	Common Stock	—	—	5.92K	5.92K
Restricted Stock Units Direct	Common Stock	—	—	5K	5K
Restricted Stock Units Direct	Common Stock	—	—	2.17K	2.17K
Total				13.10K	13.10K