Siddharth Manjeshwar served as Senior Vice President and Chief Financial Officer of AdvanSix from October 1, 2024 until his employment was terminated effective July 9, 2025.
He previously served as Vice President, Corporate Treasurer and Investor Relations at Air Products, as Chief Financial Officer at FirstLight Power from 2018 through 2021, and as Vice President, Corporate Finance and M&A and Treasurer at Dynegy Inc. from 2012 through 2018, with earlier investment-banking roles at Deutsche Bank Securities and Barclays Capital/Lehman Brothers from 2005 through 2012.