X0306 4 2020-08-06 0 0001109354 BRUKER CORP BRKR 0001133649 LAUKIEN FRANK H C/O BRUKER CORPORATION 40 MANNING ROAD BILLERICA MA 01821 1 1 1 0 CEO, President Common Stock 2020-08-06 4 A 0 52248 0 A 38120873 D Common Stock 1046499 I By Former Spouse Common Stock 1042 I By Spouse Common Stock 344007 I By Son Common Stock 343527 I By Daughter Common Stock 201702 I As UTMA custodian for son Common Stock 71728 I As UTMA custodian for son Stock Option (Right to Buy) 47.85 2020-08-06 4 A 0 58867 0 A 2021-08-06 2025-08-06 Common Stock 58867 58867 D Shares are represented by restricted stock units. Shares of restricted common stock vest in four approximately equal annual installments on the anniversary of the grant date, commencing August 6, 2021. The reporting person disclaims beneficial ownership of 1,046,499 shares held by the reporting person's former spouse, 1,042 shares held by the reporting person's spouse, 7,400 shares held by the reporting person's adult son and 6,920 shares held by the reporting person's adult daughter, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. The option vests in four approximately equal annual installments on the anniversary of the grant date, commencing August 6, 2021. /s/Michael Rich, Attorney-in-Fact 2020-08-10