InsiderTrades

Form 4 for OTTR Otter Tail Corp

Accepted 2026-02-12 00:00:00 ET · period of report 2026-02-10 · accession 0001278053-26-000005 · 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 MACFARLANE CHARLES S Pres, CEO A - Grant $86.43 +47.7K 275.1K +21% +$4.12M
D 2026-02-12 2026-02-11 OTTR MACFARLANE CHARLES S Pres, CEO F - Tax $86.43 -23.5K 251.6K -9% -$2.03M
D 2026-02-12 2026-02-10 OTTR MACFARLANE CHARLES S Pres, CEO A - Grant $0.00 +9,400 9,400 New $0

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-02-11 A A 47,700 $86.43 275,112 D — — (F1) Represents shares received upon the vesting of certain performance criteria in connection with a Performance Share Award (granted in 2023).
2 Common Common Stock 2026-02-11 F D 23,515 $86.43 251,597 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 through the Dividend Reinvestment Plan, the Employee Stock Purchase Plan and shares acquired pursuant to Stock Options, Restricted Stock Awards, Restricted Stock Units and Performance Share Awards.
3 Derivative Restricted Stock Units 2026-02-10 A A 9,400 $0.00 9,400 D — · 2027-02-06 to — 9,400 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.