Table of Contents Title of each classTrading Symbols(s)Name of each exchange on which registered Common Stock BRKR Nasdaq Global Select Market Emerging growth company ☐ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT of 1934 For the quarterly period ended September 30, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT of 1934 For the transition period from ...