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1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errorsOn May 7, 2018, Bayer named Liam Condon to lead a planned combined Crop Science organization and announced 11 other executives for it. The appointments were contingent on Bayer’s proposed Monsanto acquisition closing; they were not effective leadership changes on announcement day.
Who Bayer named in 2018
Bayer said the Executive Leadership Team would have integrated responsibility for the combined activities of Bayer Crop Science and Monsanto after the acquisition closed. The roles and locations below are those in Bayer’s 2018 announcement; they describe the planned organization, not current positions.
| Executive | Planned role | Location stated in announcement |
|---|---|---|
| Liam Condon | Leader of the combined organization; Bayer Board of Management member and Crop Science president | Not stated in the announcement |
| Brett Begemann | Head of Commercial Operations (Chief Operating Officer) | St. Louis |
| Dr. Michael Stern | Head of Digital Farming / Climate Corporation | St. Louis |
| Dr. Robert Reiter | Head of Research & Development | Monheim |
| Frank Terhorst | Head of Crop Strategy & Portfolio Management | St. Louis |
| Dr. Dirk Backhaus | Head of Product Supply | Monheim |
| Jesus Madrazo | Head of Agricultural Affairs & Sustainability | Monheim |
| James Swanson | Crop Science Chief Information Officer and Head of IT / Digital Transformation | Monheim |
| Gabriele Oehlschlaeger | Head of Human Resources | Monheim |
| Michael Schulz | Crop Science CFO and Head of Finance | St. Louis |
| Dr. Lars Benecke | Head of Law, Patents and Compliance | Monheim |
| Martin Dawkins | Head of Post-Merger Integration | Monheim |
Why the appointments were conditional
The Monsanto acquisition still required regulatory approval when Bayer made the announcement. Bayer anticipated closing in the second quarter of 2018 and said the companies would continue operating as competitors under their existing structures until closing. The release therefore announced a selected future team, not an already integrated division.
At the time, Condon was also responsible for Bayer’s Animal Health business unit. Bayer described him as continuing as a member of its Board of Management and Crop Science president while leading the combined organization after closing.
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How the roster changed after 2018
The 2018 announcement is a historical snapshot. Bayer subsequently published new leadership changes, so its names and assignments should not be read as the division’s present-day roster.
- January 10, 2024: Bayer announced later Crop Science leadership changes. Brian Naber was to lead North America and Malu Nachreiner Asia Pacific from March 1; Oliver Rittgen was to become CFO from February 1; Sascha Israel had taken Product Supply from January 1; Amanda McClerren had taken the CIO, digital-transformation and IT role from January 1; and Jessica Christiansen had taken Crop Science Communications from January 1. See Bayer’s January 2024 announcement.
- March 24, 2025: Bayer announced that Mike Graham would succeed Robert Reiter as Crop Science R&D head effective April 15, 2025. Bayer said Reiter was retiring after 27 years with the company and 34 years in the industry. See Bayer’s March 2025 announcement.
Who leads Bayer Crop Science now?
Bayer’s leadership page, consulted October 8, 2026, lists Rodrigo Santos as Crop Science president. It also lists Mike Graham for R&D, Brian Naber for North America & Australia/New Zealand, Alex Buschermöhle for CIO and digital transformation/IT, Frank Terhorst for Crop Strategy & Sustainability, Malu Nachreiner for Asia, and Sascha Israel for Product Supply, among other functional and regional leaders. For the current roster, consult Bayer’s Leadership Members in Our Divisions page.
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