OTTR

EX-99.1

2 a2026q2earningsreleaseex991.htm

EX-99.1

Document

Press Release

August 3, 2026

Otter Tail Corporation Announces Second Quarter Results and Updates Annual Earnings Guidance

FERGUS FALLS, Minnesota - Otter Tail Corporation (Nasdaq: OTTR) today announced financial results for the quarter ended June 30, 2026.

SUMMARY

•Reported quarterly diluted loss per share of $0.18 and adjusted diluted earnings per share of $1.66.

•Updated our annual diluted earnings per share guidance range to $3.84 to $4.24.

•Initiated annual adjusted diluted earnings per share guidance range of $5.68 to $6.08.

CEO OVERVIEW

“Our team advanced our strategic initiatives during the quarter and delivered on our near-term priorities and growth plan for the benefit of our customers and shareholders,” said CEO Chuck MacFarlane. “I am grateful for their efforts in what was a very busy quarter and for the ways they continue to support our customers.

“Otter Tail Power’s team members continue to execute well on our regulatory and strategic priorities. During the second quarter, we secured route permits for two of our large regional transmission projects, filed our 15-year integrated resource plan with the Minnesota commission and continued to make progress on our ongoing Minnesota rate case.

“Our Manufacturing segment produced improved financial results, primarily driven by a favorable product mix as our team continues to focus on providing value-added service to customers, creating margin expansion. Sales volumes also increased as our businesses were well positioned to capitalize on improved demand, especially in the recreational vehicle, construction and horticulture end markets.

“Our Plastics segment outperformed our expectations, driven by strong sales volumes as our customers sought to secure PVC pipe in advance of announced resin price increases. Additionally, the rate of decline in the sales price of our PVC pipe moderated in a strong demand environment. Our team effectively leveraged the additional capacity recently added at our Phoenix facility to fulfill customer demand.

“During the second quarter, we entered into settlement agreements with the three putative classes in the PVC pipe U.S. antitrust litigation. If final approval is granted by the court, the settlement agreements will resolve all claims arising from these putative classes. While not admitting any wrongdoing, fault or liability, we agreed to pay $103.5 million to resolve the class action litigation. We concluded resolution through settlements was in our best interest as it meaningfully reduces the uncertainty, distraction and significant costs and exposure associated with complex antitrust litigation, and allows our team members to remain focused on what we do best - serving our customers.

“We are updating our 2026 diluted earnings per share guidance range to $3.84 to $4.24 from $5.22 to $5.62 primarily due to the impact of the settlement agreements and related expense. We are initiating an adjusted diluted earnings per share guidance range of $5.68 to $6.08 which excludes the after-tax impact of the litigation settlement expense and reflects an increase from our original guidance range.

“The fundamentals of our diversified business model remains strong, and we are well positioned to deliver on our investment targets over the long term. We continue to target a long-term earnings per share growth rate of 7 to 9 percent and a total shareholder return of 10 to 12 percent.”

QUARTERLY DIVIDEND

On August 3, 2026, the corporation’s Board of Directors declared a quarterly common stock dividend of $0.5775 per share. This dividend is payable on September 10, 2026 to shareholders of record on August 14, 2026.

CASH FLOWS AND LIQUIDITY

Our consolidated cash provided by operating activities for the six months ended June 30, 2026 was $182.7 million compared to $159.4 million for the six months ended June 30, 2025. This increase was primarily due to a decrease in working capital requirements, largely driven by the timing of vendor payments and the recovery of fuel cost and rider revenues from our utility customers.

Investing activities for the six months ended June 30, 2026 included capital expenditures of $324.8 million. Our capital investments were largely within our Electric segment and included investments in our Abercrombie and Solway solar projects, as well as investments in our wind repowering and other projects.

Financing activities for the six months ended June 30, 2026 included the issuance of $170.0 million of long-term debt by Otter Tail Power; the proceeds of which were used to repay short-term borrowings, fund capital investments and support operating activities. Financing activities for the period also included dividend payments of $48.5 million.

As of June 30, 2026 we had $170.0 million and $153.0 million of available liquidity under our Otter Tail Corporation and Otter Tail Power credit facilities, respectively, along with $278.4 million of ava

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ottr-202602160001466593false00014665932026-02-162026-02-16

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): February 16, 2026

OTTER TAIL CORPORATION

(Exact name of registrant as specified in its charter)

Minnesota (State or other jurisdiction of incorporation or organization) 0-53713 (Commission File Number) 27-0383995 (I.R.S. Employer Identification No.)

215 South Cascade Street, P.O. Box 496, Fergus Falls, MN 56538-0496 (Address of principal executive offices, including zip code) (866) 410-8780 (Registrant’s telephone number, including area code) Not Applicable (Former name or former address, if changed since last report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Securities Exchange Act of 1934:

Title of each classTrading Symbol(s)Name of each exchange on which registered Common Shares, par value $5.00 per shareOTTRThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934. Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

Item 2.02    Results of Operations and Financial Condition On February 16, 2026 Otter Tail Corporation issued a press release announcing its consolidated financial results for the quarter and year ended December 31, 2025, and its earnings guidance for 2026. A copy of the press release is furnished herewith as Exhibit 99.1. The information in this Item 2.02 (including Exhibit 99.1 attached hereto) shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934, except as shall be expressly set forth by specific reference in such filing. Item 9.01    Financial Statements and Exhibits

(d) Exhibits

99.1 Press Release issued February 16, 2026.

104Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

OTTER TAIL CORPORATION

Date: February 17, 2026 By:/s/ Todd R. Wahlund Todd R. Wahlund Chief Financial Officer