UNITED STATES SECURITIES AND EXCHANGE COMMISSION For the quarterly period ended September 30, 2025 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: 001-35780 BRIGHT HORIZONS FAMILY SOLUTIONS INC. FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. Washington, D.C. 20549 complying with any new or revised financial accounting standards provided pursuant to Se ...