As of November 6, 2026, Otter Tail Corp is a publicly traded company (Nasdaq: OTTR); its largest reported holder is Vanguard, with 7.06% on Schedule 13G of April 29, 2026, then Vanguard (5.19%). The largest insider holding is Charles S. Macfarlane, the chief executive and president, with 330,107 shares (0.79% of shares outstanding), per Form 4 of February 12, 2026 (Schedule 13G, April 29, 2026).
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Is Otter Tail Corp a real, registered company?
- Otter Tail Corp files with the SEC under CIK 1466593 (its SEC filings).
- Its shares are listed under the ticker OTTR on Nasdaq (SEC company record).
- Incorporated in Minnesota; business address in Fergus Falls, Minnesota, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under OTTER TAIL CORP in our court records and SEC 8-K records (as of 2026-11-06).
- Leadership changes: the latest reported is Thomas J. Webb, Director (Form 8-K filed 2026-09-01). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names State Street (filed 2026-08-07).
Who are Otter Tail Corp's owners and officers?
Otter Tail Corp: incorporated in Minnesota; business address in Fergus Falls, Minnesota; industry Electric Services (Form D, 2026-09-01).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G, 2026-08-07 | State Street Corporation | 5.1% |
| Schedule 13G, 2026-04-30 | Vanguard Capital Management | 5.19% |
| Schedule 13G, 2026-04-29 | Vanguard Portfolio Management | 7.06% |
| Schedule 13G/A, 2026-03-27 | The Vanguard Group | 0% |
Questions about who owns Otter Tail Corp
Who owns Otter Tail Corp?
On this page, 3 holders' latest ownership filings report 5% or more of Otter Tail Corp: Vanguard Portfolio Management (7.06%, Schedule 13G, filed 2026-04-29), Vanguard Capital Management (5.19%, Schedule 13G, filed 2026-04-30) and State Street Corporation (5.1%, Schedule 13G, filed 2026-08-07).
Who are the largest shareholders of Otter Tail Corp?
By the share each holder's latest filing reports, the largest holders of Otter Tail Corp on this page are Vanguard Portfolio Management (7.06%), Vanguard Capital Management (5.19%) and State Street Corporation (5.1%).
When did Vanguard Portfolio Management buy into Otter Tail Corp?
The filings give report dates, not purchase dates. The earliest filing from Vanguard Portfolio Management on this page is the Schedule 13G, filed 2026-04-29, reporting 7.06%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 4 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-09-01 | Thomas J. Webb | Director | departed | |
| Form 8-K, 2026-09-01 | Kathryn O. Johnson | Director | departed | |
| Form 8-K, 2026-04-14 | Tim Rogelstad | President | appointed | |
| Form 8-K, 2026-04-14 | Tyler Nelson | Chief Financial Officer | appointed |
Which insiders own Otter Tail Corp shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , the chief executive and president: 330,107 shares (0.79% of shares outstanding), 251,597 held directly and 78,510 indirectly (Form 4, 2026-02-12).
- , a director: 153,605 shares (0.37% of shares outstanding), 3,133 held directly and 150,472 indirectly (Form 4, 2026-04-14).
- , a director: 80,130 shares (0.19% of shares outstanding), 10,969 held directly and 69,161 indirectly (Form 4, 2026-04-14).
- , the president: 64,460 shares (0.15% of shares outstanding), 61,089 held directly and 3,371 indirectly (Form 4, 2026-04-15).
- , the senior vice president and manufacturing platform: 55,896 shares (0.13% of shares outstanding), 50,896 held directly and 5,000 indirectly (Form 4, 2026-02-12).
Shares outstanding: 41,985,580 as of 2026-10-31, from the company's latest SEC cover page.
How much has Otter Tail Corp raised?
No fundraising or offering filing from Otter Tail Corp is on file with us.
Keep reading
More on Otter Tail Corp and the records around it.
Otter Tail Corp elsewhere on the record
- Leadership changes Sep 2026
Companies that share a holder
- STATE STREET CORPORATION also filed stake reports on 343 other companies: TRADE DESK INC/THE (Oct 2026), CENTRUS ENERGY CORP (Sep 2026), ACADIA PHARMACEUTICALS INC (Aug 2026)
- Vanguard Portfolio Management also filed stake reports on 941 other companies: Newmark Group Inc (Nov 2026), A10 Networks Inc (Oct 2026), ADT Inc (Oct 2026)
- Vanguard Capital Management also filed stake reports on 1495 other companies: A10 Networks Inc (Oct 2026), Altisource Portfolio Solutions SA (Oct 2026), Alto Neuroscience Inc (Oct 2026)
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