<SEC-DOCUMENT>0001104659-21-043400-index.html : 20210330
<SEC-HEADER>0001104659-21-043400.hdr.sgml : 20210330
<ACCEPTANCE-DATETIME>20210329173318
ACCESSION NUMBER:		0001104659-21-043400
CONFORMED SUBMISSION TYPE:	S-4/A
PUBLIC DOCUMENT COUNT:		29
FILED AS OF DATE:		20210330
DATE AS OF CHANGE:		20210329

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MDC PARTNERS INC
		CENTRAL INDEX KEY:			0000876883
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-ADVERTISING AGENCIES [7311]
		IRS NUMBER:				980364441
		STATE OF INCORPORATION:			A6
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-4/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-252829
		FILM NUMBER:		21782788

	BUSINESS ADDRESS:	
		STREET 1:		ONE WORLD TRADE CENTER, FLOOR 65
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10007
		BUSINESS PHONE:		646 429 1800

	MAIL ADDRESS:	
		STREET 1:		ONE WORLD TRADE CENTER, FLOOR 65
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10007

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MDC CORP INC
		DATE OF NAME CHANGE:	20001204

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MDC COMMUNICATIONS CORP
		DATE OF NAME CHANGE:	19961028

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MDC CORPORATION
		DATE OF NAME CHANGE:	19950419
</SEC-HEADER>
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<TYPE>S-4/A
<SEQUENCE>1
<FILENAME>tm214718-3_s4a.htm
<DESCRIPTION>S-4/A
<TEXT>
Document 1 - file: tm214718-3_s4a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-3.3
<SEQUENCE>2
<FILENAME>tm214718d4_ex3-3.htm
<DESCRIPTION>EXHIBIT 3.3
<TEXT>
Document 2 - file: tm214718d4_ex3-3.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>3
<FILENAME>tm214718d4_ex5-1.htm
<DESCRIPTION>EXHIBIT 5.1
<TEXT>
Document 3 - file: tm214718d4_ex5-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-8.1
<SEQUENCE>4
<FILENAME>tm214718d4_ex8-1.htm
<DESCRIPTION>EXHIBIT 8.1
<TEXT>
Document 4 - file: tm214718d4_ex8-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-8.2
<SEQUENCE>5
<FILENAME>tm214718d4_ex8-2.htm
<DESCRIPTION>EXHIBIT 8.2
<TEXT>
Document 5 - file: tm214718d4_ex8-2.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>6
<FILENAME>tm214718d4_ex23-1.htm
<DESCRIPTION>EXHIBIT 23.1
<TEXT>
Document 6 - file: tm214718d4_ex23-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.2
<SEQUENCE>7
<FILENAME>tm214718d4_ex23-2.htm
<DESCRIPTION>EXHIBIT 23.2
<TEXT>
Document 7 - file: tm214718d4_ex23-2.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.3
<SEQUENCE>8
<FILENAME>tm214718d4_ex23-3.htm
<DESCRIPTION>EXHIBIT 23.3
<TEXT>
Document 8 - file: tm214718d4_ex23-3.htm

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<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>lg_kings-advisor.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: lg_kings-advisor.jpg

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<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>lg_mdcp-4c.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: lg_mdcp-4c.jpg

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<FILENAME>lg_moelis.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: lg_moelis.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>lg_pwc-4c.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: lg_pwc-4c.jpg

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<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>sg_canacord-4c.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 13 - file: sg_canacord-4c.jpg

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<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>sg_moeliscompany-bw.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 14 - file: sg_moeliscompany-bw.jpg

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<SEQUENCE>15
<FILENAME>sg_pricewaterhousellp-bw.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 15 - file: sg_pricewaterhousellp-bw.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>tm214718d1-fc_mdc4clr.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 16 - file: tm214718d1-fc_mdc4clr.jpg

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<TYPE>GRAPHIC
<SEQUENCE>17
<FILENAME>tm214718d1-ftr_address4c.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 17 - file: tm214718d1-ftr_address4c.jpg

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<SEQUENCE>18
<FILENAME>tm214718d1-ftr_losangeel4c.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 18 - file: tm214718d1-ftr_losangeel4c.jpg

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<TYPE>GRAPHIC
<SEQUENCE>19
<FILENAME>tm214718d1-htr_address4c.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 19 - file: tm214718d1-htr_address4c.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>20
<FILENAME>tm214718d3-fc_combine4c.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 20 - file: tm214718d3-fc_combine4c.jpg

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<SEQUENCE>21
<FILENAME>tm214718d3-hr_rockfell4c.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 21 - file: tm214718d3-hr_rockfell4c.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>22
<FILENAME>tm214718d3-px_mdcboardbw.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 22 - file: tm214718d3-px_mdcboardbw.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>23
<FILENAME>tm214718d3-px_mdcpar4clr.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 23 - file: tm214718d3-px_mdcpar4clr.jpg

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<TYPE>GRAPHIC
<SEQUENCE>24
<FILENAME>tm214718d3-px_qrcodebw.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 24 - file: tm214718d3-px_qrcodebw.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>25
<FILENAME>tm214718d3-px_signedbw.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 25 - file: tm214718d3-px_signedbw.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>26
<FILENAME>tm214718d3-px_tovotebw.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 26 - file: tm214718d3-px_tovotebw.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>27
<FILENAME>tm214718d4_ex23-2img001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 27 - file: tm214718d4_ex23-2img001.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>28
<FILENAME>tm214718d4_ex5-1img01.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 28 - file: tm214718d4_ex5-1img01.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>29
<FILENAME>tm214718d4_ex5-1img02.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 29 - file: tm214718d4_ex5-1img02.jpg

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