UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 For the fiscal year ended December 31, 2025 OR FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Registrant's telephone number, including area code: (412) 894-8248 Securities registered pursuant to Section 12(b) or Section 12(g) of the Act: None Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. YES ☐ NO ☒ ☐ TRANS ...