| 11/26/2025 | BKPV | S&P revises Otter Tail view to positive
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| 11/25/2025 | BKIG | S&P turns Otter Tail view to positive
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| 8/29/2025 | BKIG | Moody's lowers Otter Tail
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| 3/31/2025 | PV | New Issue: Otter Tail Power places $100 million of notes in equal parts due 2035, 2055 at par
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| 12/16/2024 | BK | Otter Tail, Otter Tail Power restate credit agreements
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| 7/22/2024 | BK | Moody's views Otter Tail negatively
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| 4/2/2024 | PV | New Issue: Otter Tail Power places $120 million in two-part note issue
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| 9/22/2023 | BKIG | Fitch lifts Otter Tail
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| 11/1/2022 | BK | Otter Tail and subsidiary amend and restate revolving agreements
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| 5/23/2022 | PV | New Issue: Otter Tail wraps $230 million three-part notes via $90 million tranche
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| 3/1/2022 | BKIG | S&P turns Otter Tail view to stable
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| 12/1/2021 | PV | New Issue: Otter Tail completes $140 million of $230 million three-part note sale
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| 10/4/2021 | BK | Otter Tail, Otter Tail Power extend two revolvers to 2026
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| 6/14/2021 | PV | New Issue: Otter Tail Power places $230 million senior notes due 2031, 2051, 2052
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| 8/18/2020 | BKIG | S&P revises Otter Tail view to negative
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| 11/5/2019 | BK | Otter Tail extends two revolvers to 2024, lifts one to $170 million
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| 10/11/2019 | HYIG | Market Commentary: Cheniere sells $475 million notes; Reykjavik Energy, Otter Tail Power settle placements
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| 10/11/2019 | PV | New Issue: Otter Tail wraps $100 million of $175 million placement of notes in seven tranches
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| 9/18/2019 | BKIG | S&P ups Otter Tail Power
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| 9/16/2019 | HYIG | Market Commentary: Private placements pick up, helped by deals from Waters, Terreno, Otter Tail, IRET
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| 9/16/2019 | PV | New Issue: Otter Tail Power to place $175 million notes in seven tranches
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| 8/30/2018 | BKIG | Fitch affirms Otter Tail
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| 11/16/2017 | PV | New Issue: Otter Tail Power to place $100 million of 4.07% senior notes
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| 8/7/2017 | BKIG | Moody’s assigns Baa2 to Otter Tail
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| 11/4/2014 | BK | Otter Tail, subsidiary extend revolving credit facilities to 2019
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| 3/5/2014 | PV | Otter Tail Power completes placement of notes totaling $150 million
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| 1/30/2014 | BKIG | Moody's upgrades Otter Tail
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| 11/1/2013 | BK | Otter Tail, subsidiary extend revolvers to 2018, term loan to 2015
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| 8/19/2013 | PV | New Issue: Otter Tail Power to issue $150 million of notes in February
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| 8/2/2013 | BKIG | S&P rates Otter Tail notes BBB
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| 8/4/2011 | PV | New Issue: Otter Tail Power sells $140 million of 10-year 4.63% notes
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| 6/26/2009 | HYIG | S&P affirms Otter Tail at BBB-, rates notes BB+
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| 6/26/2009 | IG | Fitch to rate Otter Tail Power BBB
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