Otter Tail Corp — Investor Relations & Filings
Filings indexed
846
across all filing types
Latest filing
2026-05-15
Regulatory Filings
Country
US
United States of America
Listing
US
OTTR
Otter Tail Corporation is a holding company operating through a two-platform business model. Its Electric platform, through Otter Tail Power Company, provides electricity and energy services to residential, commercial, and industrial customers across parts of Minnesota, North Dakota, and South Dakota. The Manufacturing platform consists of several companies specializing in metal fabrication, the production of custom plastic parts, and PVC pipe for various markets. The corporation focuses on a strategy of combining a high-performing, low-cost electric utility with disciplined manufacturing operations.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| 8-K | 2026-05-15 | English | |
| 10-Q - Otter Tail Corp (0001466593) (Filer) | 2026-05-06 | English | |
| 8-K - Otter Tail Corp (0001466593) (Filer) | 2026-05-05 | English | |
| 8-K - Otter Tail Corp (0001466593) (Filer) | 2026-04-15 | English | |
| 8-K - Otter Tail Corp (0001466593) (Filer) | 2026-04-14 | English | |
| SCHEDULE 13G/A - Otter Tail Corp (0001466593) (Subject) | 2026-03-27 | English |
Browse filings by year
18 years| ID | Filing | Released | Lang | Actions | |
|---|---|---|---|---|---|
|
2026
15 filings
| |||||
| 46360060 | 8-K | 2026-05-15 | English | ||
| 41927795 | 10-Q - Otter Tail Corp (0001466593) (Filer) | 2026-05-06 | English | ||
| 41387214 | 8-K - Otter Tail Corp (0001466593) (Filer) | 2026-05-05 | English | ||
| 34581596 | 8-K - Otter Tail Corp (0001466593) (Filer) | 2026-04-15 | English | ||
| 34513461 | 8-K - Otter Tail Corp (0001466593) (Filer) | 2026-04-14 | English | ||
| 33062301 | SCHEDULE 13G/A - Otter Tail Corp (0001466593) (Subject) | 2026-03-27 | English | ||
| 33013946 | 8-K - Otter Tail Corp (0001466593) (Filer) | 2026-03-23 | English | ||
| 32892198 | ARS - OTTER TAIL CORP (0001466593) (Filer) | 2026-03-02 | English | ||
| 32892197 | DEF 14A - OTTER TAIL CORP (0001466593) (Filer) | 2026-03-02 | English | ||
| 32892199 | 10-K/A - OTTER TAIL CORP (0001466593) (Filer) | 2026-02-23 | English | ||
| 32892200 | 10-K - OTTER TAIL CORP (0001466593) (Filer) | 2026-02-18 | English | ||
| 29927920 | 8-K Filing | 2026-02-17 | English | ||
| 29928513 | 4 Filing | 2026-02-12 | English | ||
| 29928231 | 4 Filing | 2026-02-12 | English | ||
| 29928128 | 4 Filing | 2026-02-12 | English | ||
Market data
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Peer group · Electric power transmission and distribution activities
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E.ON SE
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EOAN | DE | Electricity, gas, steam and air… |
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EQUATORIAL MARANHÃO DISTRIBUIDORA DE ENERGIA S.A.
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EQUATORIAL PARÁ DISTRIBUIDORA DE ENERGIA S.A.
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EQUATORIAL S.A.
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|
Evergy, Inc.
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EVRG | US | Electricity, gas, steam and air… |
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EVERSOURCE ENERGY
A diversified energy company providing electricity, gas, an…
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ES | US | Electricity, gas, steam and air… |
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EVgo Inc.
Operates a large public direct current (DC) fast-charging n…
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EVGO | US | Electricity, gas, steam and air… |
|
EVN AG
An international company offering energy, water, and enviro…
|
EVN | AT | Electricity, gas, steam and air… |
|
EXELON CORP
A utility services holding company engaged in energy genera…
|
EXC | US | Electricity, gas, steam and air… |
|
Fastned B.V.
Develops and operates a European network of fast-charging s…
|
FAST | NL | Electricity, gas, steam and air… |
Otter Tail Corp via the API
Pull this company's filings, identifiers, and metadata as JSON or Markdown. Authenticate with your API key, then query by company ID, ISIN, or LEI. Full schema documented in the OpenAPI spec.
Endpoints
| GET | /api/companies/31280/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=31280 | Paginated list of all filings (filterable by type, date, language) |
| GET | /api/filings/{id}/ | Single filing — metadata, document URL, processing status |
| GET | /api/filings/{id}/markdown/ | Filing content as Markdown (PDF → text/tables/figures) |
| GET | /api/isins/?company=31280 | All ISINs registered to this company |
| GET | /api/filing-types/ | Reference: every filing-type code + category |
Full reference: API reference · OpenAPI schema
cURL
$ curl https://api.financialreports.eu/api/filings/?company=31280 \ -H "x-api-key: $FR_API_KEY" \ -H "Accept: application/json"
Python
import requests r = requests.get( "https://api.financialreports.eu/api/filings/", params={"company": 31280}, headers={"x-api-key": API_KEY}, ) filings = r.json()["results"]
MCP server
// MCP server URL https://mcp.financialfilings.com/mcp // Once connected, the LLM can query this company directly: "Pull the latest 5 filings for Otter Tail Corp (id: 31280)"
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