| Date Filed | Type | Description |
| 02/14/2022 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 02/12/2021 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 02/10/2020 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 02/14/2019 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 02/14/2018 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 02/14/2017 |
SC 13G/A
| Bellerophon Therapeutics, Inc. reports a 33.4% stake in Bellerophon Therapeutics, Inc. |
| 10/12/2012 |
SC 13D/A
| Form SC 13D - General statement of acquisition of beneficial ownership [amend] |
| 08/28/2012 |
SC 13D/A
| New Mountain Investments II, LLC reports a 59.5% stake in DELTEK, INC. |
| 12/06/2011 |
SC 13D/A
| Form SC 13D - General statement of acquisition of beneficial ownership [amend] |
| 03/08/2011 |
SC 13D/A
| New Mountain Investments II, LLC reports a 59.5% stake in DELTEK, INC. |
| 10/07/2010 |
SC 13D/A
| Form SC 13D - General statement of acquisition of beneficial ownership [amend] |
| 12/16/2009 |
SC 13D/A
| Form SC 13D - General statement of acquisition of beneficial ownership [amend] |
| 06/04/2009 |
SC 13D/A
| New Mountain Investments II, LLC reports a 63.5% stake in DELTEK, INC. |
| 05/29/2009 |
SC 13D/A
| New Mountain Investments II, LLC reports a 57.1% stake in DELTEK, INC. |
| 04/03/2009 |
SC 13D/A
| Form SC 13D/A -- General statement of acquisition of beneficial ownership [amend] |
| 03/31/2009 |
SC 13D
| New Mountain Investments II, LLC reports a 58.1% stake in DELTEK, INC. |
| 02/17/2009 |
SC 13G/A
| Form SC 13G/A -- Statement of acquisition of beneficial ownership by individuals [amend] |