Gregory Sigismund Ostrowski is listed as Shareholder at Retirement Management Systems, Inc. on SEC Form ADV.
Form ADV reports a beneficial ownership band of 5-10%.
| Title | Shareholder |
| Ownership | 5-10% |
| Control person | No |
| Since | 2011 |
| Title | Member |
| Ownership | 10-25% |
| Control person | Yes |
| Since | 2013 |