Todd R. Wahlund - 06 Feb 2026 Form 4 Insider Report for Otter Tail Corp (OTTR)

Role
Chief Financial Officer
Signature
/s/ Todd R. Wahlund by James A. Versteeg, Attorney-in-Fact
Issuer symbol
OTTR
Transactions as of
06 Feb 2026
Net transactions value
-$10,452
Form type
4
Filing time
09 Feb 2026, 17:37:07 UTC
Previous filing
09 Apr 2025
Next filing
12 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Wahlund Todd R Chief Financial Officer 215 S CASCADE STREET, FERGUS FALLS /s/ Todd R. Wahlund by James A. Versteeg, Attorney-in-Fact 09 Feb 2026 0002002077

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction OTTR Common Stock Options Exercise +675 +7.1% 10,148 06 Feb 2026 Direct F1
transaction OTTR Common Stock Tax liability $10,452 -119 -1.2% $87.83 10,029 06 Feb 2026 Direct F2, F3
holding OTTR Common Stock 7 06 Feb 2026 By Spouse
holding OTTR Common Stock 3,048 06 Feb 2026 By ESOP

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction OTTR Restricted Stock Units Options Exercise $0 -300 -33% $0.000000 600 06 Feb 2026 Common Stock 600 Direct F1, F4
transaction OTTR Restricted Stock Units Options Exercise $0 -375 -25% $0.000000 1,125 06 Feb 2026 Common Stock 1,125 Direct F1, F4
holding OTTR Restricted Stock Units 460 06 Feb 2026 Common Stock 460 Direct F1, F5
holding OTTR Restricted Stock Units 600 06 Feb 2026 Common Stock 600 Direct F1, F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation 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 through the dividend reinvestment plan, the Employee Stock Purchase Plan, and shares acquired pursuant to restricted stock unit distributions.
F4 The restricted stock units vest in four equal annual installments beginning the date shown above.
F5 Restricted stock units vest four years from date shown above.