Photronics, Inc. (PLAB)

George C. Macricostas became chief executive during 2025: appointed Executive Chairman on January 6 and then Chairman and Chief Executive Officer on May 28. He had sat on the board since 2002, on the Nominating and Cybersecurity committees and latterly as chairman of the Compensation Committee, and before that was a senior vice president at Photronics responsible for all aspects of the company's IT infrastructure. He took over from Dr. Frank Lee, appointed chief executive on May 16, 2022, who the proxy statement says intends to retire in the next few years and who continues as president of PDMC, the Taiwan photomask subsidiary he had led since 2006. Lee came up through Asian chipmaking: chief executive of NSMC, Ning-Po from 2004 to 2006, fab director and senior advisor for UMC in Hsin-Chu from 2001 to 2004, and executive vice president of Grace Semiconductor in Shanghai from 2000 to 2001. 123

Eric Rivera was named chief financial officer on May 23, 2024 and president on January 12, 2026, after serving as interim finance chief from February 2024 and chief accounting officer from 2020; he joined Photronics in 2016 as corporate controller. Todd Alesio became senior vice president and chief administrative officer on January 12, 2026, having joined the company in 2024 from Sperry Rail, where he had run human resources since 2020. H. K. Park, senior vice president and general manager of flat panel display operations, joined in 2004 and was made a vice president and general manager of China display operations in 2018. David Wang, senior vice president and chief operating officer for integrated circuit operations, joined PDMC in 1998, managed Photronics Singapore from 2000 to 2003 and Photronics Shanghai from 2007 to 2010, and worked on the Taichung plant expansion in 2009, the merger with Dai Nippon Printing in 2014 and the setting up of the Xiamen business in 2016. 4567

On the record this site holds, 22 people have filed insider reports for Photronics and 16 of them filed in the last fifteen months. Constantine S. Macricostas, filing as Executive Chairman, and the director Mitchell G. Tyson both go back to 2006, the first year the SEC's insider data sets reach, and both still file. Lee Kang Jyh, listed on that record as chief executive officer, first filed in 2018. 8

As of October 31, 2025 the company had approximately 1,908 full time and part time employees worldwide, and none of them at any of its facilities was represented by a union. Photronics runs eleven photomask plants: three in Taiwan, two in China, one in South Korea, three in the United States and two in Europe. It owns the plants at Hefei, Taichung, Xiamen and one of its sites at Hsinchu, but leases the land beneath them. 9101112