Stephen D. Kelley

Career

1. 2021-03 – now
   Advanced Energy Industriessrc
   President & CEO; director
   Succeeded Yuval Wasserman; hired on an $850k salary, 100% bonus target, $3.6m annual LTI and a $1.2m inducement grant (8K-2021-02-10)
2. 2013-05 – 2020-06
   Amkor Technologysrc
   President & CEO; director
   Left 2020-06-17; Amkor's executive chairman said the two sides mutually agreed it was time for a leadership change (AMKR-PR-2020). Giel Rutten succeeded him
3. 2011 – 2012-12
   Advanced Technology Investment Company (ATIC, Abu Dhabi owner of GlobalFoundries)src
   Senior Advisor
   The proxy gives only the end date (December 2012); the 2011 start is taken from the year his Cree role ended
4. 2008 – 2011
   Cree, Inc. (now Wolfspeed)src
   EVP & Chief Operating Officer
5. 2003 – 2008
   Texas Instrumentssrc
   VP/General Manager, Display, Standard Logic, Linear and Military businesses
   Before TI he held business roles at Philips Semiconductors and managerial roles at National Semiconductor and Motorola (DEF14A-2026); no dates located

Not located: 2020-06 to 2021-02 between Amkor and Advanced Energy not described; the ATIC start date is not stated in any source searched; the pre-2003 roles (Philips, National Semiconductor, Motorola) are undated

Achievements

• CEO of two listed semiconductor-supply companies: Amkor (May 2013 to June 2020) and Advanced Energy (since March 2021)src
• Advanced Energy revenue went from $1,482.0m (FY2024) to $1,798.8m (FY2025); net income from $54.2m to $148.4msrc
• In 2025 the company exited its last factory in China and added capacity in the Philippines and Mexico, per the proxy's performance summarysrc
• 2025 relative TSR ran 82.6 points ahead of the S&P 1000 index, which banked the first third of the rTSR PSUssrc
• Q2 2026 revenue and earnings came in above the top of guidance, and he guided to record revenue in both Q3 and Q4 2026src

Education

• Massachusetts Institute of Technology, SB Chemical Engineeringsrc
• Santa Clara University, JD Lawsrc

Background

• Family The 2026 proxy states there is no family relationship among any of the directors and executive officerssrc
• Boards Director of Onto Innovation (NYSE: ONTO), a semiconductor process-control company, since January 2023src
• Legal The proxy reports no Item 401(f) legal proceedings (bankruptcy, criminal, securities-law findings) involving any officer or director in the past ten yearssrc
• Other Holds a law degree alongside a chemical-engineering degree. His career ran through operating roles at TI, Philips, National and Motorola before he became a COO and then a CEOsrc
• Other Severance: 2x salary plus target bonus and full vesting (PSUs at maximum) on a change-in-control termination; 1.5x salary plus pro-rata bonus otherwisesrc