| 1964 |
Mutual Marine Office, Inc. founded by John N. Blackman Sr. |
| 1972 |
New York Marine And General Insurance Company founded |
| 1983 |
NYMAGIC® provides aviation insurance after catastrophic losses disrupt insurance market |
| 1989 |
NYMAGIC® goes public |
| 1991 |
NYMAGIC® acquires Mutual Marine Office, Inc. |
| 1997 |
NYMAGIC® enters London marine market |
| 2000 |
NYMAGIC® sells Lloyd's syndicate 1265 |
| 2002 |
Current management arrives |
| 2006 |
Other Liabilities becomes largest sector, displacing Ocean Marine |
| 2008 |
MMO Agencies founded |
| 2008 |
Mutual Marine Office, Inc. name changed to MMO INC. |