InsiderTrades

Form 4 for OTTR Otter Tail Corp

Accepted 2026-02-12 00:00:00 ET · period of report 2026-02-10 · accession 0001639060-26-000006 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
D 2026-02-12 2026-02-11 OTTR Abbott John S SVP, Manufacturing Platform F - Tax $86.43 -4,209 50.9K -8% -$363.8K
D 2026-02-12 2026-02-11 OTTR Abbott John S SVP, Manufacturing Platform A - Grant $86.43 +8,400 55.1K +18% +$726.0K
D 2026-02-12 2026-02-10 OTTR Abbott John S SVP, Manufacturing Platform A - Grant $0.00 +1,600 1,600 New $0

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-02-11 F D 4,209 $86.43 50,896 D — — (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 individually pursuant to Restricted Stock Awards and Performance Shares Awards.
2 Common Common Stock 2026-02-11 A A 8,400 $86.43 55,105 D — — (F1) Represents shares received upon the vesting of certain performance criteria in connection with a Performance Share Award (granted in 2023).
3 Derivative Restricted Stock Units 2026-02-10 A A 1,600 $0.00 1,600 D — · 2027-02-06 to — 1,600 Common Stock (F4) Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation stock. (F5) The restricted stock units vest in four equal annual installments beginning the date shown above.