Gorman Rupp Co

For the Quarterly Period Ended September 30, 2026 or

For the transition period from to Commission File Number 1-6747 The Gorman-Rupp Company ( Exact name of registrant as specified in its charter )

600 South Airport Road , Mansfield , Ohio

(Address of principal executive offices)

Common Shares, without par value GRC New York Stock Exchange

The Gorman-Rupp Company Three and Nine Months Ended September 30, 2026 and 2025

Item 1. Financial Statements (Unaudited) 2

- Three months ended September 30, 2026 and 2025

- Nine months ended September 30, 2026 and 2025

Consolidated Statements of Comprehensive Income 2

- Three months ended September 30, 2026 and 2025

- Nine months ended September 30, 2026 and 2025

- September 30, 2026 and December 31, 2025

- Nine months ended September 30, 2026 and 2025

- Nine months ended September 30, 2026 and 2025

Notes to Consolidated Financial Statements (Unaudited) 6

Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations 13

Item 3. Quantitative and Qualitative Disclosures about Market Risk 20

Item 2. Unregistered Sales of Equity Securities, Use of Proceeds, and Issuer Purchases of Equity Securities 21

Item 3. Defaults Upon Senior Securities 21

EX-31.1 Section 302 Principal Executive Officer (PEO) Certification

EX-31.2 Section 302 Principal Financial Officer (PFO) Certification

PART I. FINANCIAL INFORMATION ITEM 1. FINANC IAL STATEMENTS (UNAUDITED) THE GORMAN-RUPP COMPANY CONSOLIDATED STATEMENT S OF INCOME (UNAUDITED)

(Dollars in thousands, except per share amounts) 2026

Selling, general and administrative expenses

See notes to consolidated financial statements (unaudited).

CONSOLIDATED STATEMENTS OF COMP REHENSIVE INCOME (UNAUDITED)

Other comprehensive income (loss), net of tax:

Pension and postretirement medical liability adjustments

See notes to consolidated financial statements (unaudited).

THE GORMAN-RUPP COMPANY CONSOLIDAT ED BALANCE SHEETS

Payroll and employee related liabilities

Outstanding - 26,410,243 shares at September 30, 2026 and 26,312,842 shares at December 31, 2025 (after deducting treasury shares of 638,553 and 735,954 , respectively), at stated capital amounts

See notes to consolidated financial statements (unaudited).

THE GORMAN-RUPP COMPANY CONSOLIDATED STATEMENTS OF CA SH FLOWS (UNAUDITED)

Adjustments to reconcile net income to net cash provided by operating activities:

Changes in operating assets and liabilities:

Net cash provided by operating activities

Net increase in cash and cash equivalents

See notes to consolidated financial statements (unaudited).