The following carriers did not break down their Q4 reserve development by line:

- Chubb (net $177mn favorable development reported across all P&C business)
- Travelers (net $56mn favorable development reported in business insurance segment)
- The Hanover (net $14mn favorable development reported in specialty segment)
- WR Berkley (net $1mn favorable development reported in aggregate)
- CinFin (net $2mn unfavorable development reported across all commercial lines)