Otter Tail OTTR SEC Filings

NASDAQ OTTR
$89.78 -0.08 (-0.09%)
At close: Oct 21, 2026 · 4:00 PM EDT
EDGAR Disclosures

SEC Filings

Source SEC EDGAR

Every SEC filing Otter Tail Corp (OTTR) has made, as reported on EDGAR — annual and quarterly reports, current reports, insider transactions and ownership disclosures. Filter by form group, form type or period, and open any filing or its index directly.

Form Type
# Form Type Form Group Accession Date Filing Index
18-KCurrent Report0001466593-26-000074Sep 1, 2026 1:58 PM
24Insider Transaction0001559334-26-000010Aug 12, 2026 3:24 PM
34Insider Transaction0001559334-26-000006Aug 11, 2026 5:32 PM
4144Insider Transaction0001958244-26-000494Aug 7, 2026 8:46 PM
5SCHEDULE 13GBeneficial Ownership Report0000093751-26-000516Aug 7, 2026 2:32 PM
610-QQuarterly & Annual Report0001466593-26-000071Aug 5, 2026 4:58 PM
78-KCurrent Report0001466593-26-000068Aug 4, 2026 8:29 AM
88-KCurrent Report0001466593-26-000063Jun 18, 2026 12:02 PM
98-KCurrent Report0001466593-26-000061Jun 5, 2026 1:52 PM
10SDOthers0001466593-26-000059May 29, 2026 1:26 PM
118-KCurrent Report0001466593-26-000057May 29, 2026 10:47 AM
128-KCurrent Report0001466593-26-000054May 15, 2026 5:57 PM
1310-QQuarterly & Annual Report0001466593-26-000051May 6, 2026 5:17 PM
1410-QQuarterly & Annual Report0001466593-26-000051May 6, 2026 5:17 PM
1510-QQuarterly & Annual Report0001466593-26-000051May 6, 2026 5:17 PM
168-KCurrent Report0001466593-26-000049May 5, 2026 1:16 PM
178-KCurrent Report0001466593-26-000049May 5, 2026 1:16 PM
188-KCurrent Report0001466593-26-000049May 5, 2026 9:16 AM
19SCHEDULE 13GBeneficial Ownership Report0002100119-26-000905Apr 30, 2026 12:01 PM
20SCHEDULE 13GBeneficial Ownership Report0002100121-26-000602Apr 29, 2026 6:45 PM
214Insider Transaction0002002077-26-000009Apr 15, 2026 3:50 PM
224Insider Transaction0002002077-26-000009Apr 15, 2026 3:50 PM
234Insider Transaction0002002077-26-000009Apr 15, 2026 3:50 PM
244Insider Transaction0001605621-26-000007Apr 15, 2026 3:43 PM
254Insider Transaction0001605621-26-000007Apr 15, 2026 3:43 PM
264Insider Transaction0001605621-26-000007Apr 15, 2026 3:43 PM
274Insider Transaction0001726153-26-000007Apr 15, 2026 3:34 PM
284Insider Transaction0001726153-26-000007Apr 15, 2026 3:34 PM
294Insider Transaction0001726153-26-000007Apr 15, 2026 3:34 PM
304Insider Transaction0002129002-26-000004Apr 15, 2026 3:19 PM
314Insider Transaction0002129002-26-000004Apr 15, 2026 3:19 PM
324Insider Transaction0002129002-26-000004Apr 15, 2026 3:19 PM
338-KCurrent Report0001466593-26-000040Apr 15, 2026 2:04 PM
343Insider Transaction0002129002-26-000003Apr 14, 2026 9:06 PM
353Insider Transaction0002129002-26-000003Apr 14, 2026 9:06 PM
363Insider Transaction0002129002-26-000003Apr 14, 2026 9:06 PM
374Insider Transaction0001574100-26-000002Apr 14, 2026 6:39 PM
384Insider Transaction0001574100-26-000002Apr 14, 2026 6:39 PM
394Insider Transaction0001574100-26-000002Apr 14, 2026 6:39 PM
408-KCurrent Report0001466593-26-000037Apr 14, 2026 6:32 PM
414Insider Transaction0001959466-26-000002Apr 14, 2026 6:32 PM
424Insider Transaction0001191483-26-000002Apr 14, 2026 6:02 PM
434Insider Transaction0001191483-26-000002Apr 14, 2026 6:02 PM
444Insider Transaction0001191483-26-000002Apr 14, 2026 6:02 PM
454Insider Transaction0001959390-26-000002Apr 14, 2026 5:51 PM
464Insider Transaction0001959390-26-000002Apr 14, 2026 5:51 PM
474Insider Transaction0001959390-26-000002Apr 14, 2026 5:51 PM
484Insider Transaction0001179875-26-000002Apr 14, 2026 5:47 PM
494Insider Transaction0001179875-26-000002Apr 14, 2026 5:47 PM
504Insider Transaction0001179875-26-000002Apr 14, 2026 5:47 PM
...

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