ESE: 10-Q financial filing

ESCO TECHNOLOGIES INC._MARCH 31, 2026 ​ ​ UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 ​ FORM 10-Q ​ (MARK ONE) ​ ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2026 ​ OR ​ ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO ​ COMMISSION FILE NUMBER 1-10596 ​ ESCO TECHNOLOGIES INC. (Exact name of registrant as specified in its charter) ​ MISSOURI 43-1554045 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification No.) ​ ​ 645 MARYVILLE CENTRE DR ., SUITE 300 ​ ST. LOUIS , MISSOURI 63141-5855 (Address of principal executive offices) (Zip Code) ​ ( 314 ) 213-7200 (Registrant’s telephone number, including area code) ​ Securities registered pursuant to section 12(b) of the Act: ​ ​ ​ ​ ​ ​ Title of each class ​ ​ ​ Trading Symbol(s) ​ ​ ​ Name of each exchange on which registered Common Stock, par value $0.01 per share ​ ESE ​ New York Stock Exchange ​ Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐ ​ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (Section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐ ​ Indicate by check mark whether