Exhibit 99.1



MDC PARTNERS INC.



SCHEDULE OF CURRENT AND POTENTIAL MARKETING

COMMUNICATIONS COMPANY OWNERSHIP



|                                    |  |            |       |   | Year of    |  |      |                  | 
|----------------------------------- |  | ---------- | ----- | - | ---------- |  | ---- | ---------------- | 
|                                    |  | % Owned at |       |   | Initial    |  |      | Put/Call Options | 
|Company                             |  | 6/30/12    |       |   | Investment |  |      | 2012             | 
|                                    |  |            |       |   |            |  |      | (See Notes)      | 
|Consolidated:                       |  |            |       |   |            |  |      |                  | 
|Strategic Marketing Services        |  |            |       |   |            |  |      |                  | 
|72andSunny                          |  |            | 51.0  | % |            |  | 2010 |                  | 
|Allison & Partners                  |  |            | 51.0  | % |            |  | 2010 |                  | 
|Anomaly                             |  |            | 60.0  | % |            |  | 2011 |                  | 
|Attention                           |  |            | 60.8  | % |            |  | 2009 |                  | 
|Bruce Mau Design                    |  |            | 75.0  | % |            |  | 2004 |                  | 
|Capital C Partners                  |  |            | 80.0  | % |            |  | 2010 |                  | 
|Colle + McVoy                       |  |            | 95.0  | % |            |  | 1999 |                  | 
|Concentric Partners                 |  |            | 70.0  | % |            |  | 2011 |                  | 
|Crispin Porter + Bogusky            |  |            | 100.0 | % |            |  | 2001 |                  | 
|Hello Design                        |  |            | 49.0  | % |            |  | 2004 |                  | 
|Doner                               |  |            | 30.0  | % |            |  | 2012 |                  | 
|Dotbox                              |  |            | 51.0  | % |            |  | 2012 |                  | 
|henderson bas kohn                  |  |            | 100.0 | % |            |  | 2004 |                  | 
|HL Group Partners                   |  |            | 92.8  | % |            |  | 2007 |                  | 
|kirshenbaum bond senecal + partners |  |            | 100.0 | % |            |  | 2004 |                  | 
|The Media Kitchen                   |  |            | 100.0 | % |            |  | 2010 |                  | 
|Varick Media Management             |  |            | 100.0 | % |            |  | 2010 |                  | 
|Kwittken                            |  |            | 60.0  | % |            |  | 2010 |                  | 
|Laird + Partners                    |  |            | 65.0  | % |            |  | 2011 |                  | 
|Mono Advertising                    |  |            | 49.9  | % |            |  | 2004 |                  | 
|Redscout                            |  |            | 100.0 | % |            |  | 2007 |                  | 
|Sloane & Company                    |  |            | 70.0  | % |            |  | 2010 |                  | 
|Veritas Communications              |  |            | 95.0  | % |            |  | 1993 |                  | 
|Vitro                               |  |            | 71.4  | % |            |  | 2004 |                  | 
|Yamamoto                            |  |            | 100.0 | % |            |  | 2000 |                  | 
|Performance Marketing Services      |  |            |       |   |            |  |      |                  | 
|6degrees Communications             |  |            | 66.0  | % |            |  | 1993 |                  | 
|Accent                              |  |            | 100.0 | % |            |  | 1999 |                  | 
|AIC Publishing                      |  |            | 51.0  | % |            |  | 2011 |                  | 
|Boom Marketing                      |  |            | 85.0  | % |            |  | 2005 |                  | 
|Bryan Mills Iradesso                |  |            | 62.8  | % |            |  | 1989 |                  | 
|Communifx Partners                  |  |            | 100.0 | % |            |  | 2010 |                  | 
|Computer Composition                |  |            | 100.0 | % |            |  | 1988 |                  | 
|Hudson Media                        |  |            | 51.0  | % |            |  | 2010 |                  | 
|Integrated Media Solutions          |  |            | 75.0  | % |            |  | 2010 |                  | 
|Kenna Communications                |  |            | 80.0  | % |            |  | 2010 |                  | 
|Northstar Research Partners         |  |            | 91.8  | % |            |  | 1998 |                  | 
|Onbrand                             |  |            | 94.0  | % |            |  | 1992 |                  | 
|Relevent                            |  |            | 60.0  | % |            |  | 2010 |                  | 
|RJ Palmer                           |  |            | 100.0 | % |            |  | 2011 |                  | 
|Source Marketing                    |  |            | 83.0  | % |            |  | 1998 |                  | 
|TargetCast                          |  |            | 70.0  | % |            |  | 2012 |                  | 
|TargetCom                           |  |            | 100.0 | % |            |  | 2000 |                  | 
|TEAM                                |  |            | 60.0  | % |            |  | 2010 |                  | 
|Trade X                             |  |            | 75.0  | % |            |  | 2011 |                  | 











Notes



| | (1) | MDC has the right to increase its ownership interest in 72andSunny Partners LLC through acquisition of an incremental interest
of up to 100% in 2016.
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------



| | (2) | MDC has the right to increase its ownership interest in Allison & Partners LLC through acquisition of an incremental interest,
and other holders have the right to put only upon termination to MDC the same incremental interest up to 100% of this entity in
2015.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (3) | MDC has the right to increase its ownership interest in Anomaly Partners LLC through acquisition of an incremental interest
of up to 100% in 2015.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------



| | (4) | Attention Partners LLC is owned by HL Group Partners, LLC. HL Group Partners, LLC has the right to increase its ownership in
Attention Partners, LLC through acquisitions of incremental interests, and the other interest holders has the right to put to HL
Group Partners, LLC the same incremental interests up to 100% only upon termination.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (5) | MDC has the right to increase its ownership interest in Bruce Mau Design through acquisition of incremental interests, up to
100% of this entity in 2012.
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------



| | (6) | MDC has the right to increase its ownership interest in Capital C Partners LP through acquisition of an incremental interests,
up to 90% in 2015, and up to 100% in 2017.
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (7) | MDC has the right to increase its economic ownership in Colle + McVoy, LLC through acquisition of an incremental interest,
and the other interest holder has the right to put to MDC the same incremental interest, up to 100% of this entity in 2012.
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (8) | MDC has the right to increase its ownership in Concentric Partners LLC through acquisition of an incremental interest of up
to 100% in 2016.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------



| | (9) | Includes Crispin Porter & Bogusky LLC, Crispin Porter & Bogusky Canada LP, and certain other domestic and international
operating subsidiaries.
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------



| | (10) | MDC has the right to increase its ownership in Doner Partners LLC through conversion of preferred interests and/or acquisitions
of incremental interests, up to 70% of this entity in 2012 and up to 100% in 2017.
| | ---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (11) | Effective June 13, 2012, MDC increased its economic ownership in henderson bas kohn.
| | ---- | ------------------------------------------------------------------------------------



| | (12) | Consists of Kirshenbaum Bond Senecal + Partners LLC, Kwittken PR LLC, Varick Media Management LLC, certain other domestic and
international operating subsidiaries, and The Media Kitchen, a division of kirshenbaum bond senecal + partners.
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (13) | MDC has the right to increase its ownership in Kwittken PR LLC through acquisitions of incremental interests, up to 100% of
this entity in 2015.
| | ---- | ------------------------------------------------------------------------------------------------------------------------------------------------



| | (14) | MDC has the right to increase its ownership in Laird + Partners New York LLC through acquisition of an incremental interest
of up to 100% in 2016.
| | ---- | --------------------------------------------------------------------------------------------------------------------------------------------------



| | (15) | MDC has the right to increase its ownership in Mono Advertising, LLC through acquisitions of incremental interests, and the
other interest holders have the right to put to MDC the same incremental interests, up to 65.0% of this entity in 2012, up to 70.0%
in 2013 and up to 75.0% in 2014.
| | ---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (16) | During 2011, MDC increased its economic ownership in Redscout, LLC through acquisition of an incremental interest.
| | ---- | ------------------------------------------------------------------------------------------------------------------



| | (17) | MDC has the right to increase its ownership interest in Sloane & Company LLC through acquisition of incremental interests,
and other interest holders have the right to put to MDC the same incremental interests up to 100% in 2015.
| | ---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (18) | MDC has the right to increase its ownership in Veritas Communications Inc. through acquisitions of incremental interests, and
the other interest holders have the right to put to MDC the same incremental interests, up to 100% of this entity in 2012.
| | ---- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (19) | Effective January 1, 2012, Vitro Robertson, LLC and Skinny NYC, LLC were combined into a new entity Vitro Partners, LLC. MDC
has the right to increase its ownership in Vitro Partners, LLC through acquisition interests, and other interest holders have the
right to put to MDC the same incremental interests up to 77.9% of this entity in 2015, and up to 100% in 2017.
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



2









| | (20) | MDC has the right to increase its ownership in 6degrees Integrated Communications Corp. through acquisitions of incremental
interests, and the other interest holders have the right to put to MDC the same incremental interests up to 77.3% of this entity
in 2012. MDC’s current economic interest is 53.3%.
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (21) | MDC has the right to increase its ownership in Bryan Mills Iradesso, Corp. through acquisition of an incremental interest,
and the other interest holders have the right to put to MDC the same incremental interest, up to 100% of this entity in 2012.
| | ---- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (22) | Effective April 1, 2012, MDC increased its ownership interest in Communifx Partners. In addition, MDC has merged the operations
into Source Marketing.
| | ---- | ------------------------------------------------------------------------------------------------------------------------------------------------------



| | (23) | MDC has the right to increase its ownership interest in Integrated Media Solutions Partners LLC through acquisitions of incremental
interests, up to 100% of this entity in 2015.
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (24) | MDC has the right to increase its ownership interest in Kenna Communications LP through acquisition of an incremental interest,
up to 100% in 2015.
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------



| | (25) | The Northstar Research Partners Group consists of Northstar Research Holdings USA LP and Northstar Research Holdings Canada
Inc. MDC has the right to increase its ownership in Northstar Research Canada through acquisitions of incremental interests, and
the other holders have the right to put to MDC the same incremental interests, up to 100% of this entity in 2013.
| | ---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (26) | MDC has the right to increase its ownership in Source Marketing, LLC through acquisitions of incremental interests, and the
other interest holders have the right to put to MDC the same incremental interests up to 91.3% of this entity in 2012 and 100%
in 2013.
| | ---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (27) | MDC has the right to increase its ownership in TargetCast LLC through acquisitions of incremental interests of up to 75% of
this entity in 2015, 80% in 2016, and 100% in 2017.
| | ---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (28) | TEAM consists of The Arsenal LLC (f/k/a Team Holdings LLC) and its wholly-owned subsidiaries. MDC has the right to increase
its ownership in The Arsenal, LLC, through acquisition of an incremental interest, up to 100% of this entity in 2013.
| | ---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (29) | MDC has the right to increase its ownership interest in Trade X Partners LLC through acquisitions of incremental interests
up to 100% in 2015.
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------



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