MACFARLANE CHARLES S

PrivateCIK: 1278053
Location

FERGUS FALLS, MN

MACFARLANE CHARLES S (President & CEO) exercised options at OTTER TAIL CORP

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 1 exercise
InsiderMACFARLANE CHARLES SCIK 1278053
IssuerOTTER TAIL CORPCIK 1466593
Officer· President & CEO
Since Feb 2019
-4.28K
Net shares
Net seller
$375.6K
Total sold
0
Open market trades
0B · 0S
6
Total transactions
9.13K acquired · 13.40K disposed
Non-Derivative Transactions2

Common Stock

Direct
M · Option Exercise

Shares

+9.13K

Price / share

Trade value

% of position

4.1%
2/6/2026
222.56K231.69K

Common Stock

Direct
F · Tax Withholding

Shares

4.28K

Price / share

$87.83

Trade value

$375.65K

% of position

1.8%
2/6/2026
231.69K227.41K
Total

Net shares

+4.85K

Net value

-$375.65K

Derivative Transactions4

Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

0.00 shares

Shares

2.17K

Strike price

Held after

0.00

Exercisable

2/6/2026

Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

2.50K shares

Shares

2.50K

Strike price

Held after

2.50K

Exercisable

2/6/2026

Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

3.95K shares

Shares

1.98K

Strike price

Held after

3.95K

Exercisable

2/6/2026

Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

7.42K shares

Shares

2.48K

Strike price

Held after

7.42K

Exercisable

2/6/2026
Non-Derivative Holdings (Post-Transaction)2

Common Stock

Indirect
Shares owned3.05K

Common Stock

Indirect
Shares owned75.46K
Total
78.51K indirect78.51K
Derivative Holdings (Post-Transaction)0
No derivative holdings reported
MACFARLANE CHARLES S — Insider Transaction (Form 4) Filed Feb 9, 2026 | Finecho