| Date Filed | Type | Description |
| 04/26/2012 |
SC 13D
| Form SC 13D - General statement of acquisition of beneficial ownership: |
| 02/06/2012 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 02/03/2011 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 01/28/2010 |
SC 13G/A
| Form SC 13G - Statement of acquisition of beneficial ownership by individuals [amend] |
| 02/17/2009 |
SC 13G/A
| Form SC 13G - Statement of acquisition of beneficial ownership by individuals [amend] |
| 01/31/2008 |
SC 13G/A
| YUEN THOMAS C K reports a 18.2% stake in SRS LABS, INC. |
| 02/08/2007 |
SC 13G/A
| YUEN THOMAS C K reports a 19.4% stake in SRS LABS, INC. |
| 02/15/2006 |
SC 13G/A
| YUEN THOMAS C K reports a 22.2% stake in SRS Labs, Inc. |
| 02/09/2005 |
SC 13G/A
| YUEN THOMAS C K reports a 22.8% stake in SRS Labs, Inc. |
| 02/13/2004 |
SC 13G/A
| YUEN THOMAS C K reports a 24.4% stake in SRS Labs, Inc. |
| 02/14/2003 |
SC 13G/A
| YUEN THOMAS C K reports a 25.1% stake in SRS Labs, Inc. |
| 02/14/2002 |
SC 13G/A
| YUEN THOMAS C K reports a 24.1% stake in SRS Labs, Inc. |
| 02/14/2001 |
SC 13G/A
| YUEN THOMAS C K reports a 24.1% stake in SRS Labs, Inc. |
| 02/14/2000 |
SC 13G/A
| YUEN THOMAS C K reports a 24.7% stake in SRS Labs, Inc. |
| 02/16/1999 |
SC 13G/A
| YUEN THOMAS C K reports a 24.4% stake in SRS Labs, Inc. |
| 02/12/1998 |
SC 13G/A
| YUEN THOMAS C K reports a 28.8% stake in SRS Labs, Inc. |
| 02/14/1997 |
SC 13G
| YUEN THOMAS C K reports a 30.4% stake in SRS Labs, Inc. |
| 09/28/1995 |
SC 13G
| YUEN THOMAS C K reports a 2.3% stake in AST RESEARCH, INC. |