Warner serves as counsel to publicly traded companies regarding compliance with the Securities and Exchange Act of 1934. Companies have included:
- BorgWarner, Inc.; NYSE: BWA
- Flagstar Bancorp, Inc.; NYSE: FBC
- SpartanNash Company; NASDAQ: SPTN
- Internap Corporation; NASDAQ: INAP
- Chemical Financial Corporation; NASDAQ: CHFC
- Macatawa Bank Corporation; NASDAQ: MCBC
- ChoiceOne Financial Services, Inc.; OTC: COFS.