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Mailing Address 215 S CASCADE ST PO BOX 496 FERGUS FALLS MN 56538-0496
Business Address 215 S CASCADE ST PO BOX 496 FERGUS FALLS MN 56538-0496 866-410-8780
Otter Tail Corp CIK#: 0001466593 (see all company filings)

SIC: 4911 - ELECTRIC SERVICES
State location: MN | State of Inc.: MN | Fiscal Year End: 1231
(CF Office: 01 Energy & Transportation)
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Items 1 - 40  0001466593 Filings RSS Feed
Filings Format Description Filing Date File/Film Number
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0001466593-24-000057 (34 Act)  Size: 2 MB
2024-02-28 000-53713
24690567
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0001466593-24-000055 (34 Act)  Size: 41 MB
2024-02-28 000-53713
24690547
ARS  Documents Annual Report to Security Holders
Acc-no: 0001466593-24-000053 (34 Act)  Size: 28 MB
2024-02-28 000-53713
24690526
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0001466593-24-000039 (34 Act)  Size: 17 MB
2024-02-14 000-53713
24637740
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001104659-24-020098 (34 Act)  Size: 13 KB
2024-02-13 005-84909
24627123
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001466593-24-000034 (34 Act)  Size: 559 KB
2024-02-13 000-53713
24622867
8-K  Documents   Interactive Data Current report, item 5.02
Acc-no: 0001466593-24-000010 (34 Act)  Size: 147 KB
2024-01-29 000-53713
24570717
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001086364-24-001130 (34 Act)  Size: 13 KB
2024-01-22 005-84909
24548771
8-K  Documents   Interactive Data Current report, item 8.01
Acc-no: 0001466593-23-000165 (34 Act)  Size: 157 KB
2023-12-21 000-53713
231504162
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001466593-23-000161 (34 Act)  Size: 8 MB
2023-11-03 000-53713
231375454
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001466593-23-000159 (34 Act)  Size: 472 KB
2023-10-31 000-53713
231362471
8-K  Documents   Interactive Data Current report, items 5.02 and 9.01
Acc-no: 0001466593-23-000154 (34 Act)  Size: 3 MB
2023-10-04 000-53713
231308785
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001466593-23-000148 (34 Act)  Size: 8 MB
2023-08-02 000-53713
231134300
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001466593-23-000146 (34 Act)  Size: 472 KB
2023-08-01 000-53713
231129742
8-K/A  Documents   Interactive Data [Amend] Current report, item 5.07
Acc-no: 0001466593-23-000140 (34 Act)  Size: 145 KB
2023-06-20 000-53713
231024364
SD  Documents Specialized disclosure report
Acc-no: 0001466593-23-000132 (34 Act)  Size: 51 KB
2023-05-25 000-53713
23958082
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001466593-23-000127 (34 Act)  Size: 7 MB
2023-05-03 000-53713
23882893
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001466593-23-000124 (34 Act)  Size: 507 KB
2023-05-02 000-53713
23876719
8-K  Documents   Interactive Data Current report, items 5.02, 5.07, and 9.01
Acc-no: 0001466593-23-000118 (34 Act)  Size: 258 KB
2023-04-19 000-53713
23829863
S-8  Documents Securities to be offered to employees in employee benefit plans
Acc-no: 0001466593-23-000096 (33 Act)  Size: 168 KB
2023-04-17 333-271284
23823387
8-K  Documents   Interactive Data Current report, item 8.01
Acc-no: 0001466593-23-000089 (34 Act)  Size: 153 KB
2023-03-31 000-53713
23787478
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001306550-23-008794 (34 Act)  Size: 13 KB
2023-03-08 005-84909
23715594
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0001466593-23-000081 (34 Act)  Size: 1 MB
2023-03-07 000-53713
23711904
DEFR14A  Documents Revised definitive proxy soliciting materials
Acc-no: 0001466593-23-000079 (34 Act)  Size: 97 KB
2023-03-07 000-53713
23711898
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0001466593-23-000072 (34 Act)  Size: 33 MB
2023-03-01 000-53713
23690359
ARS  Documents Annual Report to Security Holders
Acc-no: 0001466593-23-000070 (34 Act)  Size: 9 MB
2023-03-01 000-53713
23690265
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0001466593-23-000053 (34 Act)  Size: 18 MB
2023-02-15 000-53713
23634871
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001466593-23-000050 (34 Act)  Size: 587 KB
2023-02-14 000-53713
23624069
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001104659-23-015135 (34 Act)  Size: 13 KB
2023-02-09 005-84909
23602111
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001306550-23-005036 (34 Act)  Size: 13 KB
2023-01-31 005-84909
23571694
8-K  Documents   Interactive Data Current report, items 5.02 and 9.01
Acc-no: 0001466593-22-000084 (34 Act)  Size: 950 KB
2022-12-22 000-53713
221481846
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001466593-22-000075 (34 Act)  Size: 8 MB
2022-11-02 000-53713
221353126
8-K  Documents   Interactive Data Current report, items 1.01, 2.02, 2.03, and 9.01
Acc-no: 0001466593-22-000070 (34 Act)  Size: 2 MB
2022-11-01 000-53713
221348855
8-K  Documents   Interactive Data Current report, item 8.01
Acc-no: 0001466593-22-000060 (34 Act)  Size: 169 KB
2022-10-19 000-53713
221318277
8-K  Documents   Interactive Data Current report, item 5.02
Acc-no: 0001466593-22-000054 (34 Act)  Size: 161 KB
2022-09-23 000-53713
221260959
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001466593-22-000051 (34 Act)  Size: 8 MB
2022-08-03 000-53713
221131594
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001466593-22-000048 (34 Act)  Size: 557 KB
2022-08-02 000-53713
221126990
SD  Documents Specialized disclosure report
Acc-no: 0001466593-22-000038 (34 Act)  Size: 54 KB
2022-05-27 000-53713
22972657
8-K  Documents   Interactive Data Current report, item 2.03
Acc-no: 0001466593-22-000035 (34 Act)  Size: 165 KB
2022-05-23 000-53713
22950381
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001466593-22-000031 (34 Act)  Size: 7 MB
2022-05-04 000-53713
22890846