Stagwell (STGW) 10-Q 2010 Q3 Quarterly report

Exhibit 99.1

MDC PARTNERS INC.

SCHEDULE OF CURRENT AND POTENTIAL MARKETING

COMMUNICATIONS COMPANY OWNERSHIP

				Year of
	% Owned at			Initial
Company	9/30/10			Investment	Put/Call Options
					2010			Thereafter
					(See Notes)
Consolidated:
Strategic Marketing Services
Kbs+p Canada, Inc. (f.k.a. Allard Johnson Communications Inc.)		74.3	%	1992		89.0	%	Note 1
Allison & Partners LLC		51.0	%	2010		—		Note 2
Attention Partners LLC		51.0	%	2009		—		Note 3
Bruce Mau Design Inc.		75.0	%	2004		—
Colle & McVoy, LLC		95.0	%	1999		—		Note 4
Crispin Porter & Bogusky, LLC		100.0	%	2001		—
Company C Communications LLC		90.0	%	2000		—		Note 5
Fletcher Martin, LLC		85.0	%	1999		100.0	%	Note 6
Hello Design, LLC		49.0	%	2004		—
henderson bas partnership		65.0	%	2004		100.0	%
HL Group Partners, LLC		65.9	%	2007		—		Note 7
kirshenbaum bond senecal & partners, LLC		100.0	%	2004		—
Kwittken PR LLC		60.0	%	2010		—		Note 8
Mono Advertising, LLC		49.9	%	2004		54.9	%	Note 9
Redscout, LLC		60.0	%	2007		—		Note 10
Sloane & Company LLC		70.0	%	2010				Note 11
Skinny NYC, LLC		50.1	%	2008		—		Note 12
Veritas Communications Inc.		64.1	%	1993		78.4	%	Note 13
Vitro Robertson, LLC		77.0	%	2004		—		Note 14
Yamamoto Moss Mackenzie, Inc.		100.0	%	2000		—
Crispin Porter + Bogusky Canada Inc. (f.k.a. Zig Inc.)		100.0	%	2004		—		Note 15
Zyman Group, LLC		94.1	%	2005		—		Note 16
Performance Marketing Services
Accent Marketing Services, LLC		100.0	%	1999		—
6degrees Integrated Communications Inc. (f.k.a. Accumark Communications Inc.)		55.0	%	1993		61.7	%	Note 17
Bryan Mills Iradesso Corp.		62.8	%	1989		88.2	%	Note 18
Communifx Partners, LLC		71.2	%	2010		—		Note 19
Computer Composition of Canada Inc.		100.0	%	1988		—
Integrated Media Solutions Partners LLC		75.0	%	2010		—		Note 20
Northstar Research Partners Inc.		70.0	%	1998		—		Note 21
656712 Ontario Limited (d.b.a. Onbrand)		89.0	%	1992		—
Relevent Partners LLC		60.0	%	2010		—
Hudson and Sunset Media LLC (f.k.a. Shout Media LLC)		51.0	%	2010		—
Source Marketing, LLC		83.0	%	1998		—		Note 22
TargetCom, LLC		100.0	%	2000		—		Note 23
The Arsenal LLC (f.k.a.Team Holdings LLC)		60.0	%	2010		—		Note 24
Equity Accounted:
Adrenalina, LLC		49.9	%	2007		—		Note 25

Notes

(1)	MDC has the right to increase its ownership interest in Kbs+p Canada, Inc. through acquisition of an incremental interest, and the other holders have the right to put to MDC the same incremental interest up to 89% of this entity in 2010 and 100% only upon termination.
(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.
(3)	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.
(4)	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.
(5)	MDC has the right to increase its economic ownership in Company C Communications, 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. Effective October 1, 2008, Company C is operated as a division of kirshenbaum bond & partners, LLC.

(6)	Effective January 1, 2010, MDC acquired the remaining 15% membership interest; however, in conjunction with the step-up in Trendcore, which was merged into Fletcher Martin, LLC, a 15% profits interests was issued.
(7)	MDC has the right to increase its ownership in HL Group Partners, LLC through acquisitions of incremental interests, and the other interest holders have the right to put to MDC the same incremental interests, up to 72.4% of this entity in 2012, up to 82.62% in 2013 and up to 93.73% in 2014. Effective January 25, 2010, MDC acquired an additional 1% membership interest in HL Group Partners, LLC.
(8)	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.
(9)	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 54.9% of this entity in 2010, up to 60.0% in 2011, up to 65.0% in 2012, up to 70.0% in 2013 and up to 75.0% in 2014.
(10)	MDC has the right to increase its ownership in Redscout, 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 80% of this entity in 2012.
(11)	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.
(12)	MDC has the right to increase its ownership in Skinny NYC, LLC through acquisition of incremental interests, and the other interest holders have the right to put to MDC the same incremental interest, up to 60.1% of this entity in 2014, up to 70.1% of this entity in 2015 and up to 80.1% of this entity in 2016.
(13)	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 78.4% of this in 2010, up to 81.5% in 2011, up to 95.1% in 2012 and up to 100% in 2013.
(14)	MDC has the right to increase its ownership in Vitro Robertson, 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 95% of this entity in 2011, up to 97.5% in 2012 and up to 100% in 2013.
(15)	MDC has increased its ownership in Crispin Porter + Bogusky Canada Inc. 100% through acquisitions of incremental interests.
(16)	As of March 31, 2010, MDC’s economic interest in Zyman Group, LLC was 100% of profits as its priority return is not expected to be exceeded. In January 2009, Zyman Group, LLC has become an operating division of kirshenbaum bond & partners, LLC.
(17)	MDC has the right to increase its ownership in 6degrees Integrated 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 61.7% of this entity in 2010, up to 68.3% in 2011 and up to 75.0% in 2012. MDC’s current economic interest is 42%.
(18)	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.
(19)	MDC has the right to increase its ownership in Communifx Partners, LLC 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 2013.
(20)	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.
(21)	MDC has the right to increase its ownership in Northstar Research Partners Inc. 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.
(22)	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 87.1% of this entity in 2011 and 91.3% in 2012 and 100% in 2013.
(23)	Effective January 1, 2009, Targetcom LLC is operating as a division of Accent Marketing Services, LLC.
(24)	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.
(25)	Effective September 1, 2010,  MDC has written off its investment in Adrenalina, LLC.