Bruker Corporation
A maker of high-performance scientific instruments, Bruker builds the NMR, mass spectrometry, X-ray, and microscopy tools that researchers use to study molecules, cells, and materials, plus superconducting wire for MRI and fusion energy. It was founded in 1960 in a backyard workshop in Karlsruhe, Germany, by physicist Günther Laukien and Dr. Emil Bruker. The company carries Bruker's name because German rules barred professors from commercializing their research, so Laukien couldn't be listed as a founder.
Granted 22.52M · Bought 4.34M · Sold 1.76M
Granted 13.14M · Sold 8.36M
Granted 13.95M · Bought 200.0K · Sold 7.36M
Granted 1.32M · Sold 6.97M
Sold 7.41M
Granted 356.8K · Sold 202.2K
Granted 496.9K · Sold 291.0K
Granted 105.8K · Sold 14.2K
Granted 139.6K · Sold 19.0K
Granted 102.0K · Bought 25.0K · Sold 46.4K
Granted 122.7K · Bought 25.0K
Granted 8.3K · Bought 5.0K
Granted 69.1K · Sold 28.1K
Granted 61.8K · Sold 36.6K
Granted 46.0K · Sold 6.2K
Granted 43.5K · Sold 4.7K
Granted 36.0K
Granted 46.0K · Sold 15.0K
Granted 29.1K
Granted 27.7K
Granted 61.8K · Sold 30.8K
Granted 44.7K · Sold 30.0K
Granted 23.6K · Sold 22.6K
Granted 37.7K · Sold 15.1K
Granted 20.3K
Granted 17.8K
Granted 14.6K · Sold 3.5K
Granted 11.4K
Granted 9.0K
Granted 40.8K · Sold 37.0K
Granted 7.0K
Granted 6.0K
Granted 5.0K
Granted 4.0K
Granted 44.5K · Sold 39.9K
Granted 19.6K · Sold 15.0K
Granted 4.5K
Granted 4.0K
Granted 4.0K
Granted 5.5K · Sold 5.5K
Granted 3.0K · Bought 500
Granted 2.9K
Granted 1.8K
Granted 21.0K · Sold 21.0K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Laukien Frank HPRESIDENT & CEO, Director, 10% owner · 968 transactions | — | 40.43Mas of Aug 2025 | 22.52M | 4.34M | 1.76M |
| Laukien Dirk DDirector, 10% owner · 10 transactions | — | 15.86Mas of Mar 2011 | 13.14M | — | 8.36M |
| Laukien Joerg CDirector · 29 transactions | — | 15.22Mas of Jan 2018 | 13.95M | 200.0K | 7.36M |
| Laukien Marc M10% owner · 5 transactions | — | 14.61Mas of May 2009 | 1.32M | — | 6.97M |
| Laukien Isolde10% owner · 2 transactions | — | 14.16Mas of Sep 2009 | — | — | 7.41M |
| Srega JuergenPRESIDENT CALID · 17 transactions | — | 157.7Kas of Aug 2024 | 356.8K | — | 202.2K |
| Munch MarkEXEC VP&PRES BRUKER NANO INC. · 84 transactions | — | 128.4K | 496.9K | — | 291.0K |
| Herman Gerald NEXECUTIVE VICE PRESIDENT, CFO · 20 transactions | — | 102.6Kas of Aug 2025 | 105.8K | — | 14.2K |
| Wagner Charles F JrEVP & Chief Financial Officer · 7 transactions | — | 99.9Kas of Mar 2015 | 139.6K | — | 19.0K |
| Packer Richard ADirector · 33 transactions | — | 93.7K | 102.0K | 25.0K | 46.4K |
| Linton William ADirector · 28 transactions | — | 63.2K | 122.7K | 25.0K | — |
| Knight William JChief Financial Officer · 6 transactions | — | 61.4Kas of Nov 2008 | 8.3K | 5.0K | — |
| Busse FalkoPRESIDENT, BIOSPIN GROUP · 15 transactions | — | 48.2Kas of Aug 2025 | 69.1K | — | 28.1K |
| Kniss RichardDirector · 22 transactions | — | 44.2Kas of Jan 2018 | 61.8K | — | 36.6K |
| Ornell John ADirector · 13 transactions | — | 39.7K | 46.0K | — | 6.2K |
| Rosenthal BobDirector · 13 transactions | — | 38.8K | 43.5K | — | 4.7K |
| Mattacchione Anthony LSenior Vice President & CFO · 4 transactions | — | 33.7Kas of Feb 2018 | 36.0K | — | — |
| Requardt Hermann FritzDirector · 14 transactions | — | 31.0K | 46.0K | — | 15.0K |
| Perkins Adelene QDirector · 10 transactions | — | 29.1K | 29.1K | — | — |
| Bachmann Thomas WernerPresident Bruker BioSpin Group · 2 transactions | — | 27.7Kas of Aug 2014 | 27.7K | — | — |
| Prause BurkhardPRES. & CEO, BRUKER BEST · 23 transactions | — | 25.2Kas of Aug 2025 | 61.8K | — | 30.8K |
| Martin Gilles Gerard JeanDirector · 8 transactions | — | 24.7Kas of May 2020 | 44.7K | — | 30.0K |
| Furlong Brenda JDirector · 5 transactions | — | 23.6Kas of May 2016 | 23.6K | — | 22.6K |
| Friend Cynthia MDirector · 22 transactions | — | 22.5K | 37.7K | — | 15.1K |
| Wangler BernhardDirector · 5 transactions | — | 20.3Kas of Mar 2012 | 20.3K | — | — |
| Anderson Bonnie HDirector · 7 transactions | — | 17.8K | 17.8K | — | — |
| Lenggenhager RenePresident, BioSpin Group · 4 transactions | — | 14.6Kas of Feb 2017 | 14.6K | — | 3.5K |
| Keller Tony WernerDirector · 3 transactions | — | 13.3Kas of Dec 2010 | 11.4K | — | — |
| Francis LauraDirector · 2 transactions | — | 9.0K | 9.0K | — | — |
| Kastner Marc ADirector · 15 transactions | — | 8.1Kas of May 2023 | 40.8K | — | 37.0K |
| Dsilva Collin JDirector · 3 transactions | — | 7.0Kas of Jan 2010 | 7.0K | — | — |
| Ma PhilipDirector · 3 transactions | — | 6.0Kas of Jan 2024 | 6.0K | — | — |
| Monahan Brian PCorporate Controller · 1 transaction | — | 5.0Kas of Jan 2006 | 5.0K | — | — |
| Canavan M ChristopherDirector · 2 transactions | — | 4.9Kas of Feb 2007 | 4.0K | — | — |
| Van Ingen ChrisDirector · 9 transactions | — | 4.6Kas of Jun 2017 | 44.5K | — | 39.9K |
| Fesik Stephen W.Director · 5 transactions | — | 4.6Kas of Jan 2017 | 19.6K | — | 15.0K |
| Phillips JackDirector · 1 transaction | — | 4.5K | 4.5K | — | — |
| Crouch TaylorDirector · 2 transactions | — | 4.0Kas of Feb 2007 | 4.0K | — | — |
| Dross DanielDirector · 2 transactions | — | 4.0Kas of Feb 2007 | 4.0K | — | — |
| Stein Richard MSecretary, Director · 7 transactions | — | 3.3Kas of Nov 2010 | 5.5K | — | 5.5K |
| Bures ThomasChief Accounting Officer · 3 transactions | — | 3.2K | 3.0K | 500 | — |
| Bernard ThierryDirector · 1 transaction | — | 2.9K | 2.9K | — | — |
| Knell Michael GunnarChief Accounting Officer · 1 transaction | — | 1.8Kas of Oct 2016 | 1.8K | — | — |
| Emmerich Wolf-DieterDirector · 6 transactions | — | 0as of May 2016 | 21.0K | — | 21.0K |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over all recorded history: -28.14M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.