Employer with a benefit plan ยท SEC filer
OTTER TAIL CORPORATION
4150 19TH AVE S., FARGO, MN 58103
EIN
27-0383995
SEC CIK
0001466593
SEC · 2026-09-01
Industry (SIC)
Electric Services (4911)
SEC · 2026-09-01
State of incorporation
MN
SEC · 2026-09-01
Ticker
OTTR
SEC · 2026-09-01
Latest SEC filing
8-K 2026-09-01
SEC · 2026-09-01
Benefit plan 506, 2024 filing
OTTER TAIL CORPORATION RETIREE WELFARE BENEFIT PLAN
DOL · 2026-08-07
Participants (start of year)
601
DOL · 2026-08-07
Plan features
code 4A4B4L
DOL · 2026-08-07
Plan type
Single-employer plan
DOL · 2026-08-07
Business code (NAICS)
551112
DOL · 2026-08-07
Benefit plan 501, 2024 filing
OTTER TAIL CORPORATION COMPREHENSIVE WELFARE BENEFIT PLAN
DOL · 2026-08-07
Participants (start of year)
2,097
DOL · 2026-08-07
Plan features
code 4A4B4D4E4F4H4L4Q
DOL · 2026-08-07
Plan type
Single-employer plan
DOL · 2026-08-07