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OTTR · Otter Tail Corp · Documents

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$89.78 -0.08 (-0.09%) At close · Oct 21
S&P 600 member Russell 2000 member Rebalance outlook locked
Market Cap
$3.77B
Shares
41.99M
Volume · Oct 21 137.47K Avg daily vol (3M) 224.82K

The company's filings as submitted to the SEC's EDGAR system — 10-K, 10-Q, 8-K, proxy statements and more — listed most recent first.

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Type AI summary Filing Date Period Open
8-K — 2026-09-01 2026-08-28
10-Q — 2026-08-05 2026-06-30
8-K — 2026-08-04 2026-08-03
8-K — 2026-06-18 2026-06-17
8-K — 2026-06-05 2026-06-04
8-K — 2026-05-29 2026-05-28
8-K — 2026-05-15 —
10-Q — 2026-05-06 2026-03-31
8-K — 2026-05-05 2026-05-04
8-K — 2026-04-15 2026-04-13
8-K — 2026-04-14 2026-04-13
8-K — 2026-03-23 2026-03-19
DEF 14A — 2026-03-02 2026-04-13
10-K/A — 2026-02-23 2025-12-31
10-K — 2026-02-18 2025-12-31
8-K — 2026-02-17 2026-02-16
8-K — 2025-12-18 2025-12-16
10-Q — 2025-11-05 2025-09-30
8-K — 2025-11-04 2025-11-03
10-Q — 2025-08-06 2025-06-30
8-K — 2025-08-05 2025-08-04
8-K — 2025-06-06 2025-06-05
8-K — 2025-06-05 2025-06-04
10-Q — 2025-05-07 2025-03-31
8-K — 2025-05-06 2025-05-05
8-K — 2025-04-17 2025-04-14
8-K — 2025-03-31 2025-03-27
DEF 14A — 2025-03-03 2024-12-31
10-K — 2025-02-19 2024-12-31
8-K — 2025-02-18 2025-02-17
8-K — 2024-12-31 2024-12-30
8-K — 2024-12-16 2024-12-11
10-Q — 2024-11-07 2024-09-30
8-K — 2024-11-05 2024-11-04
10-Q — 2024-08-07 2024-06-30
8-K — 2024-08-06 2024-08-05
8-K — 2024-06-05 2024-05-30
10-Q — 2024-05-08 2024-03-31
8-K — 2024-05-07 2024-05-06
8-K — 2024-04-10 2024-04-08
8-K — 2024-04-05 2024-04-02
8-K — 2024-04-02 2024-03-28
DEF 14A — 2024-02-28 2023-12-31
10-K — 2024-02-14 2023-12-31
8-K — 2024-02-13 2024-02-12
8-K — 2024-01-29 2024-01-26
8-K — 2023-12-21 2023-12-15
10-Q — 2023-11-03 2023-09-30
8-K — 2023-10-31 2023-10-30
8-K — 2023-10-04 2023-10-02
Showing 1–50 of 104 filings
Key facts CIK 1466593 CUSIP 689648103 13F (30d) 52 filings 52 filers Visit website Investor relations