MDC Partners Inc

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MDC Partners Inc
TickerSTGW
CIK #0000876883
CUSIP85256A109
SectorTrade & Services - Services-Advertising Agencies
Address745 Fifth Avenue, 19th Floor, New York, NY 10151
Source [EDGAR]
CIK Filing 2011 - 2025
[0000876883] 10-K
[0000876883] 10-Q
[0000876883] 3
[0000876883] 4
[0000876883] 5
[0000876883] 8-K
[0000876883] SC 13D
[0000876883] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Ballmer Steven A Stagwell Inc [2025-04-25] 0.0
American Beacon Advisors Inc Stagwell Inc [2024-02-28] 0.0
BlackRock Inc Stagwell Inc [2024-01-31] 5.3
AlpInvest Partners BV Stagwell Inc [2023-05-10] 0.9
Hotchkis & Wiley Capital Management LLC Stagwell Inc [2023-02-14] 5.83
Indaba Capital Management LP Stagwell Inc [2021-09-07] 12.1
Indaba Capital Management LP MDC Partners Inc [2021-05-27] 11.9
Madison Avenue Partners LP MDC Partners Inc [2021-02-16] 5.3
Stagwell Group LLC MDC Partners Inc [2019-03-25] 19.9
Indaba Capital Management LP MDC Partners Inc [2019-02-14] 7.5
BlackRock Inc MDC Partners Inc [2019-02-08] 5.1
Schroder Investment Management North America INC/ de MDC Partners Inc [2019-02-07] 5.284
FrontFour Capital Group LLC MDC Partners Inc [2018-11-28] 5.1
Hotchkis & Wiley Capital Management LLC MDC Partners Inc [2018-07-10] 10.96
Goldman Sachs Group Inc MDC Partners Inc [2017-03-15] 14.72
Hotchkis & Wiley Capital Management LLC MDC Partners Inc [2017-02-10] 7.43
Cardinal Capital Management LLC /CT MDC Partners Inc [2016-02-12] 5.2
Invesco Ltd MDC Partners Inc [2015-09-10] 10.6
Roystone Capital Management LP MDC Partners Inc [2014-05-29] 5.7
[2013-02-14] None
Gruber & McBaine Capital Management LLC MDC Partners Inc [2013-02-12] 0.0
Cooperman Leon G MDC Partners Inc [2013-02-08] 6.7
Cooperman Leon G MDC Partners Inc [2013-02-07] 6.7
Robeco Investment Management Inc MDC Partners Inc [2013-02-07] 6.64
Gruber & McBaine Capital Management LLC MDC Partners Inc [2012-02-07] 3.4
Form 3/4/5 Filer 2011 - 2025
Stagwell Inc
Penn Mark Jeffery
Samaha Eli
Vaughan Brandt A.
Simon Irwin D
Rogers Desiree G
Oosterman Wade
Barshefsky Charlene
Slater Rodney E
Leveton Jay
Polpat LLC
Ballmer Steven A
Greene Ryan
Lanuto Frank P
McElligott Peter
Dimaggio Vincenzo
Gross Bradley J.
Goldman Sachs & Co LLC
StoneBridge 2017, L.P.
Goldman Sachs Group Inc
StoneBridge 2017 Offshore, L.P.
Broad Street Principal Investments, L.L.C.
Bridge Street Opportunity Advisors, L.L.C.
AlpInvest Secondaries Fund VI C.V.
AlpInvest Secondaries Fund (Euro) VI C.V.
AlpInvest Partners B.V.
AlpInvest PEP Secondary 2017 C.V.
AlpInvest Partners US Secondary Investments 2016 I C.V.
GGG US Secondary 2017 C.V.
AG Secondary C.V.
AJ Secondary C.V.
AlpInvest GA Secondary C.V.
APSS Secondary C.V.
AP Fondo Secondaries II C.V.
Schrier Derek C
IC GP LLC
Indaba Capital Management, L.P.
Ross David Corwin
Mirsky Jonathan B.
Daniere Asha
Goldberg Daniel Steven
Gardner Seth
O'Donovan Anne Marie
Stagwell Group LLC
Stagwell Agency Holdings LLC
Gendel Mitchell
Kauffman Scott L
Doft David B.
Copeland Clare
Kantor Robert Andrew
Kramer Lawrence S
Kirby Michael JL
Coste Andre Clement
Nadal Miles
Sabatino Michael
Senecal Lori Ann
Kamerschen Robert
Davidson Thomas N
Pustil Stephen
Swartzman Gavin
Dabill David
Form 13F Holdings
Firm Period DFND Voting Shares
Hotchkis & Wiley Capital Management LLC [2025-06-30] SOLE 18,015,967 20,114,146
Goldman Sachs Group Inc [2025-06-30] DFND 12,852,299 12,852,299
Madison Avenue Partners LP [2025-06-30] SOLE 8,014,322 8,014,322
BlackRock, Inc. [2025-06-30] SOLE 7,795,170 7,958,839
Vanguard Group Inc [2025-06-30] SOLE 0 6,473,663
Boston Partners [2025-06-30] DFND 2,913,820 3,061,771
Geode Capital Management LLC [2025-06-30] DFND 2,852,617 2,852,617
Penn Capital Management Company LLC [2025-06-30] SOLE 2,580,078 2,580,078
UBS Group AG [2025-06-30] DFND 2,573,446 2,573,446
Dimensional Fund Advisors LP [2025-06-30] SOLE 2,388,339 2,540,790
ABLE Financial Group LLC [2025-06-30] SOLE 0 2,222,342
State Street Corp [2025-06-30] DFND 2,032,487 2,207,600
Cidel Asset Management Inc [2025-06-30] SOLE 2,039,680 2,039,680
Diversify Wealth Management LLC [2025-06-30] SOLE 0 1,750,000
Hightower Advisors LLC [2025-06-30] SOLE 1,592,476 1,592,476
New York State Common Retirement Fund [2025-06-30] SOLE 1,538,361 1,538,361
First Pacific Advisors LP [2025-06-30] SOLE 0 1,191,918
Northern Trust Corp [2025-06-30] DFND 1,112,506 1,112,856
JPMorgan Chase & Co [2025-06-30] DFND 928,978 1,091,990
Stanley Capital Management LLC [2025-06-30] SOLE 950,342 950,342
683 Capital Management LLC [2025-06-30] DFND 950,000 950,000
Charles Schwab Investment Management Inc [2025-06-30] SOLE 878,390 878,390
Russell Investments Group, Ltd. [2025-06-30] DFND 582,795 615,382
My Personal CFO LLC [2025-06-30] SOLE 0 555,029
Castleknight Management LP [2025-06-30] SOLE 510,700 510,700
Bank of America Corp /DE/ [2025-06-30] DFND 11,357 481,056
National Bank of Canada /FI/ [2025-06-30] DFND 0 407,472
Bank of New York Mellon Corp [2025-06-30] DFND 365,679 391,814
Morgan Stanley [2025-06-30] DFND 313,070 351,366
Ameriprise Financial Inc [2025-06-30] DFND 0 339,732
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