John S. Abbott - 10 Feb 2026 Form 4 Insider Report for Otter Tail Corp (OTTR)

Reporting relationship: Sr VP, Manufacturing Platform
Issuer ticker: OTTR
Reported as of: 10 Feb 2026
Net transaction value: +$362,228
SEC form: 4
Accepted by SEC: 12 Feb 2026, 10:21:06 UTC
Prior SEC filing: 09 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ John S. Abbott by James A Versteeg, Attorney-in-Fact

Key filing fact

John S. Abbott filed Form 4 for Otter Tail Corp (OTTR) on 12 Feb 2026.

Key facts

This page summarizes John S. Abbott's Form 4 filing for Otter Tail Corp (OTTR).
3 reported transactions and 4 derivative rows are listed below.
Accepted by SEC: 12 Feb 2026, 10:21.

Change

Previous filing in this sequence was filed on 09 Feb 2026.
Current net transaction value: +$362,228.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001639060 Primary reporting owner

Abbott John S

Relationship: Sr VP, Manufacturing Platform
Address: 215 SOUTH CASCADE STREET, FERGUS FALLS
Signature: /s/ John S. Abbott by James A Versteeg, Attorney-in-Fact
Signature date: 12 Feb 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

OTTR transaction

Common Stock

Award

Transaction value: $726,012
Shares: +8,400
Change %: +18%
Price: $86.43
Shares after: 55,105
Date: 11 Feb 2026
Ownership: Direct
Footnotes: F1

OTTR transaction

Common Stock

Tax liability

Transaction value: $363,784
Shares: -4,209
Change %: -7.6%
Price: $86.43
Shares after: 50,896
Date: 11 Feb 2026
Ownership: Direct
Footnotes: F2, F3

OTTR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 5,000
Date: 10 Feb 2026
Ownership: By Trust

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

OTTR transaction Derivative

Restricted Stock Units

Award

Transaction value: $0
Shares: +1,600
Change %
Price: $0.000000
Shares after: 1,600
Date: 10 Feb 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,600
Exercise price
Footnotes: F4, F5

OTTR holding Derivative

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 450
Date: 10 Feb 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 450
Exercise price
Footnotes: F4, F5

OTTR holding Derivative

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 700
Date: 10 Feb 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 700
Exercise price
Footnotes: F4, F5

OTTR holding Derivative

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,275
Date: 10 Feb 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,275
Exercise price
Footnotes: F4, F5

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 5 footnotes

Footnote F1

Represents shares received upon the vesting of certain performance criteria in connection with a Performance Share Award (granted in 2023).

Footnote F2

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

Footnote F3

Total direct holdings include shares acquired individually pursuant to Restricted Stock Awards and Performance Shares Awards.

Footnote F4

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

Footnote F5

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