Otter Tail Corp — fact timeline

Otter Tail Corp entered into Settlement Agreement with the EUPs individually and on behalf of the putative EUP class members valued at $30 million (effective 2026-06-17).

“On June 17, 2026, the Company entered into a settlement agreement with the EUPs individually and on behalf of the putative EUP class members (the “Settlement Agreement”). Subject to the satisfaction of certain conditions, including preliminary and final approval by the Court, the Company’s subsidiaries, Northern Pipe Products, Inc. and Vinyltech Corporation, have agreed to pay an aggregate of $30 million into a settlement fund”

Otter Tail Corp incurred senior notes of $70,000,000 with Purchasers named in Note Purchase Agreement at 6.04% maturing June 4, 2056.

“On June 4, 2026, OTP issued the Series 2026B Notes pursuant to the Note Purchase Agreement for aggregate proceeds of $70,000,000.”

Otter Tail Corp entered into Settlement Agreements with Direct Purchaser Class and Non-Converter Seller Purchaser Class valued at an aggregate of $39.5 million ... and ... $34.0 million (effective 2026-05-28).

“On May 28, 2026, the Company entered into settlement agreements with two of the three Putative Classes, the DPPs and NCSPs, individually and on behalf of the putative DPP and NCSP class members (the "Settlement Agreements").”

Otter Tail Corp reported first quarter of 2026 results: EPS $1.73. Guidance reaffirmed.

“Produced diluted earnings per share of $1.73 in the first quarter of 2026.”

Otter Tail Corp incurred senior notes of $170,000,000 aggregate principal amount of the Company’s senior unsecured notes consisting of $100,000,000 in aggregate with the purchasers named therein at 5.33% and 6.04% maturing March 19, 2036 and June 4, 2056.

“(the “Note Purchase Agreement”) with the purchasers named therein (the “Purchasers”), pursuant to which the Company issued to the Purchasers, in a private placement transaction, $170,000,000 aggregate principal amount of the Company’s senior unsecured notes consisting of $100,000,000 in aggregate principal amount of its 5.33% Series 2026A Senior Unsecured Notes due”

Otter Tail Corp entered into Note Purchase Agreement with the purchasers named therein (the ‘Purchasers’) valued at $170,000,000 aggregate principal amount (effective 2026-03-19).

“On March 19, 2026, Otter Tail Power Company (the “Company”), a wholly owned subsidiary of Otter Tail Corporation (“OTC”), entered into a Note Purchase Agreement (the “Note Purchase Agreement”) with the purchasers named therein (the “Purchasers”), pursuant to which the Company issued to the Purchasers, in a private placement transaction, $170,000,000 aggregate principal amount of the Company’s senior unsecured notes consisting of $100,000,000 in aggregate principal amount of its 5.33% Series 2026A Senior Unsecured Notes due March 19, 2036 (the “Series 2026A Notes”) and $70,000,000 in aggregate principal amount of its 6.04% Series 2026B Senior Unsecured Notes due June 4, 2056 (the “Series 2026B Notes”) (collectively, the “Notes”).”

Otter Tail Corp incurred senior notes of $50,000,000 in aggregate principal amount of its 5.98% Series 2025B Senior Unsecured Notes at 5.98% maturing June 5, 2055.

“On June 5, 2025, OTP issued the Series 2025B Notes pursuant to the Note Purchase Agreement for aggregate proceeds of $50,000,000.”

Otter Tail Corp incurred senior notes of $100,000,000 aggregate principal amount of the Company's senior unsecured notes consisting of $50,000,000 in aggregate p with purchasers named therein at 5.49% for Series 2025A Notes and 5.98% for Series 2025B Notes maturing March 27, 2035 for Series 2025A Notes and June 5, 2055 for Series 2025B Notes.

“On March 27, 2025, Otter Tail Power Company (the "Company"), a wholly owned subsidiary of Otter Tail Corporation ("OTC"), entered into a Note Purchase Agreement (the "Note Purchase Agreement") with the purchasers named therein (the "Purchasers"), pursuant to which the Company issued to the Purchasers, in a private placement transaction, $100,000,000 aggregate principal amount of the Company's senior unsecured notes consisting of $50,000,000 in aggregate principal amount of its 5.49% Series 2025A Senior Unsecured Notes due March 27, 2035 (the "Series 2025A Notes") and $50,000,000 in aggregate principal amount of its 5.98% Series 2025B Senior Unsecured Notes due June 5, 2055 (the "Series 2025B Notes") (collectively, the "Notes"). The Series 2025A Notes were issued on March 27, 2025, upon entering into the agreement.”

Otter Tail Corp reported 2024 results: EPS a range of $6.23 to $6.53. Guidance raised.

“We are increasing our 2024 diluted earnings per share guidance to a range of $6.23 to $6.53 from our initial range of $5.13 to $5.43 due primarily to stronger than expected Plastics segment performance.”

Otter Tail Corp reported the quarter ended March 31, 2024 results: EPS $1.77 per share.

“Otter Tail Corporation (Nasdaq: OTTR) today announced financial results for the quarter ended March 31, 2024.”

Otter Tail Corp shareholders approved Ratification of the appointment of Deloitte & Touche LLP as the Company's independent registered public accounting firm for the year 2024 at the 2024-04-08 meeting.

“Ratification of the Appointment of Deloitte & Touche LLP as Otter Tail Corporation’s Independent Registered Public Accounting Firm for the Year 2024: Votes For Votes Against Votes Abstained Broker Non-Votes 33,836,435 400,517 114,496 —”

Otter Tail Corp shareholders approved Approval, in a non-binding advisory vote, of compensation provided to the Named Executive Officers as described in the Proxy Statement at the 2024-04-08 meeting.

“Approval, In a Non-Binding Advisory Vote, of Compensation Provided to the Named Executive Officers as Described in the Proxy Statement: Votes For Votes Against Votes Abstained Broker Non-Votes 26,863,245 749,226 383,152 6,355,825”

Otter Tail Corp shareholders approved Election of three members to the Board of Directors at the 2024-04-08 meeting.

“Election of Directors: Director’s Name Votes For Votes Withheld Broker Non-Votes Mary E. Ludford 27,346,252 649,371 6,355,825 Charles S. MacFarlane 27,691,784 303,839 6,355,825 Thomas J. Webb 27,548,873 446,750 6,355,825”

Otter Tail Corp incurred senior notes of $60,000,000 with purchasers named in Note Purchase Agreement at 5.77% maturing April 1, 2054.

“pursuant to which the Company issued to the Purchasers, in a private placement transaction, $120,000,000 aggregate principal amount of the Company’s senior unsecured notes consisting of $60,000,000 in aggregate principal amount of its 5.48% Series 2024A Senior Unsecured Notes due April 1, 2034 (the “Series 2024A Notes”) and $60,000,000 in aggregate principal amount of its 5.77% Series 2024B Senior Unsecured Notes due April 1, 2054 (the “Series 2024B Notes”) (collectively, the “Notes”).”

Otter Tail Corp incurred senior notes of $60,000,000 with purchasers named in Note Purchase Agreement at 5.48% maturing April 1, 2034.

“pursuant to which the Company issued to the Purchasers, in a private placement transaction, $120,000,000 aggregate principal amount of the Company’s senior unsecured notes consisting of $60,000,000 in aggregate principal amount of its 5.48% Series 2024A Senior Unsecured Notes due April 1, 2034 (the “Series 2024A Notes”) and $60,000,000 in aggregate principal amount of its 5.77% Series 2024B Senior Unsecured Notes due April 1, 2054 (the “Series 2024B Notes”) (collectively, the “Notes”).”

Otter Tail Corp entered into Note Purchase Agreement with the purchasers named therein valued at $120,000,000 aggregate principal amount (effective 2024-03-28).

“On March 28, 2024, Otter Tail Power Company (the “Company”), a wholly owned subsidiary of Otter Tail Corporation (“OTC”), entered into a Note Purchase Agreement (the “Note Purchase Agreement”) with the purchasers named therein (the “Purchasers”), pursuant to which the Company issued to the Purchasers, in a private placement transaction, $120,000,000 aggregate principal amount of the Company’s senior unsecured notes”

Otter Tail Corp reported fiscal year 2024 results: EPS diluted earnings per share guidance range of $5.13 to $5.43. Guidance initiated.

“We are initiating our 2024 diluted earnings per share guidance range of $5.13 to $5.43.”

Otter Tail Corp reported for the quarter and year ended December 31, 2023 results: revenue Operating Revenues $ 314.3 $ 301.4 $ 1,349.2 $ 1,460.2, net income Net Income $ 57.8 $ 42.0 $ 294.2 $ 284.2, EPS Diluted Earnings Per Share $ 1.37 $ 1.00 $ 7.00 $ 6.78.

“Otter Tail Corporation (Nasdaq: OTTR) today announced financial results for the quarter and year ended December 31, 2023. 2023 SUMMARY (in millions, except per share amounts) Q4 2023 Q4 2022 2023 2022 Operating Revenues $ 314.3 $ 301.4 $ 1,349.2 $ 1,460.2 Net Income $ 57.8 $ 42.0 $ 294.2 $ 284.2 Diluted Earnings Per Share $ 1.37 $ 1.00 $ 7.00 $ 6.78”

Karen M. Bohn departed as Director at Otter Tail Corp.

“On January 26, 2024, Karen M. Bohn notified Otter Tail Corporation (the “Company”) of her intention to not stand for reelection and instead retire from the Company’s Board of Directors effective at the conclusion of her current term, which expires at the time of the 2024 Annual Meeting of Shareholders.”

Otter Tail Corp updated its third quarter of 2023 guidance (raised).

“On October 30, 2023 Otter Tail Corporation issued a press release announcing its consolidated financial results for the third quarter of 2023.”

Todd Wahlund was elected as Vice President and Chief Financial Officer at Otter Tail Corp.

“The Board has elected Todd Wahlund to the position of Vice President and Chief Financial Officer, effective on Mr. Moug’s retirement.”

Kevin Moug departed as Chief Financial Officer and Senior Vice President at Otter Tail Corp.

“Kevin Moug, the Chief Financial Officer and Senior Vice President, of Otter Tail Corporation (the Company), notified the Company of his intention to retire effective December 31, 2023.”

Otter Tail Corp reported the quarter ended June 30, 2023 results: revenue Consolidated operating revenues decreased 16% to $338 million., net income Consolidated net income decreased 5% to $82 million., EPS Diluted earnings per share decreased 5% to $1.95 per share.. Guidance raised.

“OTTR) today announced financial results for the quarter ended June 30, 2023. SUMMARY Compared to the quarter ended June 30, 2022: • Consolidated operating revenues decreased 16% to $338 million. • Consolidated net income decreased 5% to $82 million. • Diluted earnings per share decreased 5% to $1.95 per share. CEO OVERVIEW “We are pleased with our”

Otter Tail Corp reported the quarter ended March 31, 2023 results: revenue $339 million, net income $62 million, EPS $1.49 per share. Guidance raised.

“today announced financial results for the quarter ended March 31, 2023. SUMMARY Compared to the quarter ended March 31, 2022: • Consolidated operating revenues decreased 10% to $339 million. • Consolidated net income decreased 13% to $62 million. • Diluted earnings per share decreased 13% to $1.49 per share. CEO OVERVIEW “We are pleased with our first quarter”

Otter Tail Corp shareholders approved Ratification of the Appointment of Deloitte & Touche LLP as Otter Tail Corporation’s Independent Registered Public Accounting Firm for the Year 2023 at the 2023-04-17 meeting.

“Ratification of the Appointment of Deloitte & Touche LLP as Otter Tail Corporation’s Independent Registered Public Accounting Firm for the Year 2023: Votes For Votes Against Votes Abstained Broker Non-Votes 33,237,781 543,757 164,504 —”

Otter Tail Corp shareholders approved Adoption of the Otter Tail Corporation 2023 Stock Incentive Plan at the 2023-04-17 meeting.

“Adoption of the Otter Tail Corporation 2023 Stock Incentive Plan: Votes For Votes Against Votes Abstained Broker Non-Votes 26,075,218 895,106 273,107 6,702,611”

Otter Tail Corp shareholders approved Determination, In a Non-Binding Advisory Vote, of Whether Future Shareholder Votes on the Compensation of the Named Executive Officers Should Occur Every One, Two or Three Years at the 2023-04-17 meeting.

“Determination, In a Non-Binding Advisory Vote, of Whether Future Shareholder Votes on the Compensation of the Named Executive Officers Should Occur Every One, Two or Three Years: Votes For One Year Votes For Two Years Votes For Three Years Votes Abstained Broker Non-Votes 25,511,046 358,621 1,216,875 156,889 6,702,611”

Otter Tail Corp shareholders approved Approval, In a Non-Binding Advisory Vote, of Compensation Provided to the Named Executive Officers as Described in the Proxy Statement at the 2023-04-17 meeting.

“Approval, In a Non-Binding Advisory Vote, of Compensation Provided to the Named Executive Officers as Described in the Proxy Statement: Votes For Votes Against Votes Abstained Broker Non-Votes 26,134,940 696,211 412,280 6,702,611”

Otter Tail Corp shareholders approved Election of Directors at the 2023-04-17 meeting.

“Election of Directors: Director’s Name Votes For Votes Withheld Broker Non-Votes John D. Erickson 26,722,234 521,197 6,702,611 Nathan I. Partain 26,758,332 485,099 6,702,611 Jeanne H. Crain 26,925,494 317,937 6,702,611 All three directors were elected, or re-elected, to serve three-year terms expiring at the time of the 2026 Annual Shareholder Meeting and until their successors are duly elected and qualified.”

Otter Tail Corp reported the quarter and year ended December 31, 2022 results: revenue $ 301.4 $ 333.2 $ 1,460.2 $ 1,196.8, net income $ 42.0 $ 51.6 $ 284.2 $ 176.8, EPS $ 1.00 $ 1.23 $ 6.78 $ 4.23. Guidance initiated.

“announced financial results for the quarter and year ended December 31, 2022. 2022 SUMMARY (in millions, except per share amounts) Q4 2022 Q4 2021 2022 2021 Operating Revenues $ 301.4 $ 333.2 $ 1,460.2 $ 1,196.8 Net Income $ 42.0 $ 51.6 $ 284.2 $ 176.8 Diluted Earnings Per Share $ 1.00 $ 1.23 $ 6.78 $ 4.23 Compared to the year ended December 31, 2021: •”

Mary Ludford was appointed as Director at Otter Tail Corp.

“On December 21, 2022, the Otter Tail Corporation (the “Corporation”) Board of Directors appointed Ms. Jeanne Crain and Ms. Mary Ludford to serve as members of the Board of Directors, effective January 1, 2023.”

Jeanne Crain was appointed as Director at Otter Tail Corp.

“On December 21, 2022, the Otter Tail Corporation (the “Corporation”) Board of Directors appointed Ms. Jeanne Crain and Ms. Mary Ludford to serve as members of the Board of Directors, effective January 1, 2023.”

Otter Tail Corp reported the quarter ended September 30, 2022 results: revenue $384 million, net income $84 million, EPS $2.01 per share. Guidance reaffirmed.

“Otter Tail Corporation (Nasdaq: OTTR) today announced financial results for the quarter ended September 30, 2022. SUMMARY Compared to the quarter ended September 30, 2021: • Consolidated operating revenues increased 21% to $384 million. • Consolidated net income increased 60% to $84 million. • Diluted earnings per share increased 60% to $2.01 per share.”

Otter Tail Corp entered into Fourth Amended and Restated Credit Agreement with U.S. Bank National Association valued at $170 million unsecured revolving credit facility, may be increased to $250 million, expires October (effective 2022-10-31).

“On October 31, 2022, Otter Tail Power Company (“OTP”), a wholly owned subsidiary of the Company, entered into a Fourth Amended and Restated Credit Agreement (the “OTP Credit Agreement”) with a group of banks as named therein, and led by U.S. Bank, as administrative agent.”

Otter Tail Corp entered into Fifth Amended and Restated Credit Agreement with U.S. Bank National Association valued at $170 million unsecured revolving credit facility, may be increased to $290 million, expires October (effective 2022-10-31).

“On October 31, 2022, Otter Tail Corporation (the “Company”) entered into a Fifth Amended and Restated Credit Agreement (the “Otter Tail Credit Agreement”) with certain banks as named therein, and led by U.S. Bank National Association (“U.S. Bank”), as administrative agent.”

James B. Stake departed as Director at Otter Tail Corp.

“On September 21, 2022, James B. Stake notified Otter Tail Corporation (the “Company”) of his intention to not stand for reelection and instead retire from the Company’s Board of Directors effective at the conclusion of his current term, which expires at the time of the 2023 Annual Meeting of Shareholders.”

Dr. Michael E. LeBeau was appointed as Director at Otter Tail Corp.

“On December 14, 2021, the Board of Directors of the Company appointed Dr. Michael E. LeBeau to serve as a member of the Board of Directors, effective January 1, 2022, to fill the vacancy which will be created by the retirement of Mr. O’Keefe.”

Timothy J. O'Keefe departed as Director at Otter Tail Corp.

“On December 14, 2021, Timothy J. O’Keefe notified Otter Tail Corporation (the “Company”) of his intention to retire from the Company’s Board of Directors effective at the conclusion of his current term, which expires at the time of the 2022 Annual Meeting of Shareholders, due to having reached the mandatory retirement age.”