Welcome to our dedicated page for Otter Tail SEC filings (Ticker: OTTR), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Otter Tail Corporation filings document operating results, governance actions, capital structure, and material events for a diversified public company with an electric utility and manufacturing businesses. Form 8-K reports cover consolidated financial results, earnings guidance, executive appointments, annual meeting voting outcomes, and material agreements involving Otter Tail Power Company.
Proxy materials disclose board elections, executive compensation, auditor ratification, bylaw matters, and shareholder voting mechanics. Capital-structure disclosures include common shares registered on Nasdaq and utility financing arrangements such as senior unsecured notes, related covenants, and restrictions on indebtedness, liens, asset sales, affiliate transactions, and other corporate actions.
Otter Tail Corporation (OTTR) reported upcoming Board changes driven by its director retirement policy. Thomas J. Webb informed the company on August 28, 2026 that he will not stand for reelection and will retire from the Board at the conclusion of his current term, which ends at the 2027 Annual Meeting of Shareholders.
On August 31, 2026, Kathryn O. Johnson likewise notified Otter Tail that she will not stand for reelection and will retire from the Board at the end of her term at the 2027 Annual Meeting of Shareholders, having reached retirement age under the company’s director retirement policy. Both Webb and Johnson stated that their decisions are not due to any disagreement with Otter Tail’s operations, policies or procedures.
Otter Tail Corp VP, Human Resources Paul L. Knutson reported indirect sales of Otter Tail common stock held for his children. On 2026-08-10, 250 shares held "By son" were sold at $92.84 per share, and on 2026-08-11, 475 shares held "By daughter" were sold at $94.63 per share, each in a single transaction. After these sales, the Form 4 shows 0 indirect shares remaining in each of those accounts, while direct holdings total 20,770 shares, including shares acquired through dividend reinvestment, an Employee Stock Purchase Plan, Restricted Stock Awards, and Performance Share Awards.
Otter Tail Corp officer Paul L. Knutson, VP, Human Resources, reported multiple transactions in Common Stock on 2026-08-07. He sold 3,500 shares in open-market or private transactions at a $93.11 weighted average price, with individual sale prices ranging from $92.74 to $93.32 per share. He also completed bona fide gifts totaling 1,450 shares, including 475 shares given to his daughter and 250 shares to his son, which are now reported as indirect holdings of 475 shares "By daughter" and 250 shares "By son". Direct holdings are described as including shares acquired through dividend reinvestment, an Employee Stock Purchase Plan, and equity awards.
OTTR reported a planned sale of common stock under a Form 144 notice. A broker, Goldman Sachs & Co. LLC, is listed for the transaction involving 3,500 shares of common stock with an indicated aggregate market value of $328,265, to be sold through NASD on 08/07/2026. The class shows total common shares of 41,985,580. The shares to be sold are linked to awards previously acquired as compensation in the form of Restricted Stock Units, including 3,347 shares granted on 02/06/2024 and 153 shares granted on 02/12/2025.
State Street Corporation filed a Schedule 13G reporting a passive ownership stake in Otter Tail Corp common stock. State Street reports beneficial ownership of 2,148,193 shares of common stock, representing 5.1% of the class. It has shared voting power over 2,023,181 shares and shared dispositive power over 1,645,782 shares, with no sole voting or dispositive power. The filing attributes investment authority to several affiliated investment adviser entities under State Street’s asset management business.
Otter Tail Corporation reported second-quarter 2026 operating revenue of $334.4 million, roughly flat year over year, but recorded a net loss of $7.6 million versus net income of $77.7 million a year earlier, driven by a $103.5 million pre-tax charge for estimated losses related to U.S. PVC pipe class-action settlements.
For the first six months, revenue rose to $681.4 million, while net income declined to $65.0 million from $145.8 million. The Electric segment benefited from new rates, higher sales and increased production tax credits, lifting year-to-date segment net income to $53.9 million, while Plastics earnings fell sharply due to the litigation charge despite higher PVC pipe volumes.
Operating cash flow for the half-year increased to $182.7 million, supporting elevated capital expenditures of $324.8 million, largely in the Electric segment. Long-term debt rose to $1.22 billion after issuing $170 million of new senior unsecured notes, and $73.5 million was held as restricted cash in escrow for settlement payments, with additional settlement-related payments made in July 2026.
Otter Tail Corporation reported Q2 2026 consolidated operating revenues of $334.4 million and a diluted loss per share of $0.18, driven by a $103.5 million legal settlement expense. Excluding this item, adjusted diluted earnings per share were $1.66. Cash from operating activities for the first six months rose to $182.7 million, and total available liquidity at June 30, 2026 was $601.4 million, including $278.4 million of cash and cash equivalents.
The Electric segment saw revenue decline 5.8% to $121.3 million and net income of $18.7 million, while Manufacturing revenue grew 12.4% to $88.5 million with net income of $4.6 million. The Plastics segment generated $124.6 million of revenue and adjusted net income of $47.1 million, but reported a net loss due to the settlement charge. For 2026, management reduced GAAP diluted EPS guidance to $3.84–$4.24 and introduced adjusted diluted EPS guidance of $5.68–$6.08, and the board declared a quarterly dividend of $0.5775 per share, payable September 10, 2026.
Otter Tail Corporation announced that subsidiaries Northern Pipe Products and Vinyltech Corporation have entered into a settlement agreement to resolve End-User Class claims in ongoing PVC pipe antitrust litigation. The subsidiaries agreed to pay $30 million into a settlement fund, inclusive of class recoveries, attorneys’ fees and administration costs, funded from available cash.
The settlement is subject to preliminary and final Court approval, with payment expected about 21 days after preliminary approval. The company states the agreement does not admit wrongdoing and is not expected to have a material adverse effect on its financial position or liquidity, while reducing uncertainty, distraction and potential costs from prolonged class action litigation.
Otter Tail Power Company, a wholly owned subsidiary of Otter Tail Corporation, has completed the issuance of its 6.04% Series 2026B Senior Unsecured Notes for aggregate proceeds of $70,000,000. These notes bear interest at 6.04% and are due on June 4, 2056.
The Series 2026B Notes are part of a previously agreed private placement totaling $170,000,000, which also includes 5.33% Series 2026A Notes due March 19, 2036. OTP plans to use the new funds to support capital expenditures, refinance existing debt, and for general corporate purposes.
The Note Purchase Agreement includes financial covenants limiting OTP’s Interest-bearing Debt to no more than 65% of Total Capitalization and Priority Indebtedness to no more than 20% of Total Capitalization, each tested at quarter-end. It also provides change of control prepayment rights and structured prepayment terms, including specified dates after which certain prepayments avoid a make-whole amount.
Otter Tail Corporation has entered into settlement agreements to resolve two major classes in ongoing PVC pipe antitrust litigation. Its Northern Pipe Products and Vinyltech subsidiaries agreed to pay $39.5 million into a settlement fund for direct purchasers and $34.0 million for non-converter seller purchasers, subject to court approval.
The payments, expected about 21 days after preliminary approval, will be funded with available cash and include class recoveries, attorneys’ fees and administration costs. Claims by end‑user plaintiffs remain pending, and the company plans to keep defending those. Otter Tail states these settlements are not expected to have a material adverse effect on its financial position or liquidity.