According to their website Square 1 is “a team of battle-tested venture bankers, tired of traditional bank bureaucracy.”
| Company | Date | Round | Size | Participants |
| Rally Software | 2/09 | Series D | $8M | 1 |
| Memeo | 2/09 | Series C | $3M | 1 |
| Smart Destinations | 12/08 | Debt | $3M | 1 |
| Perfect Market | 7/08 | Series A | $15.6M | 4 |
| Rubicon Project | 10/07 | Debt | $2M | 1 |
| MerchantCircle | 9/07 | Series B | $10M | 5 |
| ITM Software | 8/07 | Series D | $4M | 6 |
| Red Condor Inc | 8/07 | Debt | $7.7M | 3 |
