X0306 4 2017-06-14 0 0001109354 BRUKER CORP BRKR 0001142621 VAN INGEN CHRIS C/O BRUKER CORPORATION 40 MANNING ROAD BILLERICA MA 01821 1 0 0 0 Common Stock 2017-06-14 4 M 0 10000 19.07 A 14577 D Common Stock 2017-06-14 4 M 0 6600 19.12 A 21177 D Common Stock 2017-06-14 4 M 0 3300 24.00 A 24477 D Common Stock 2017-06-14 4 S 0 19900 28.0346 D 4577 D Stock Option (right to buy) 19.07 2017-06-14 4 M 0 10000 0 D 2024-01-06 Common Stock 10000 0 D Stock Option (right to buy) 19.12 2017-06-14 4 M 0 6600 0 D 2025-01-05 Common Stock 6600 3400 D Stock Option (right to buy) 24.00 2017-06-14 4 M 0 3300 0 D 2026-01-05 Common Stock 3300 6700 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.91 to $28.26, inclusive. The reporting person undertakes to provide to Bruker Corporation, any security holder of Bruker Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The options exercised vested in three approximately equal annual installments on the anniversary of the grant date commencing January 6, 2015. The options exercised vested in two approximately equal annual installments on January 5, 2016 and 2017. The remaining will vest on January 5, 2018. The options exercised vested on January 5, 2017. The remaining options will vest in two approximately equal annual installments on each of January 5, 2018 and 2019. /s/Jodi Giordano, Attorney-in-Fact 2017-06-15