    <SEC-DOCUMENT>0001453687-17-000030-index.html : 20170511
    <SEC-HEADER>0001453687-17-000030.hdr.sgml : 20170511
    <ACCEPTANCE-DATETIME>20170511161126
    ACCESSION NUMBER:		0001453687-17-000030
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		21
    CONFORMED PERIOD OF REPORT:	20170511
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20170511
    DATE AS OF CHANGE:		20170511

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			SELECTA BIOSCIENCES INC
    		CENTRAL INDEX KEY:			0001453687
    		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-37798
    		FILM NUMBER:		17834400

    	BUSINESS ADDRESS:
    		STREET 1:		480 ARSENAL WAY
    		CITY:			WATERTOWN
    		STATE:			MA
    		ZIP:			02472
    		BUSINESS PHONE:		617-923-1400

    	MAIL ADDRESS:
    		STREET 1:		480 ARSENAL WAY
    		CITY:			WATERTOWN
    		STATE:			MA
    		ZIP:			02472
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>selectabiosciences8-k33117.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: selectabiosciences8-k33117.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>exhibit991_earningsrelease.htm
    <DESCRIPTION>EXHIBIT 99.1
    <TEXT>
    Document 2 - file: exhibit991_earningsrelease.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>exhibit992selectaq117pre.htm
    <DESCRIPTION>EXHIBIT 99.2
    <TEXT>
    Document 3 - file: exhibit992selectaq117pre.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>exhibit992selectaq117pre001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: exhibit992selectaq117pre001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>exhibit992selectaq117pre002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: exhibit992selectaq117pre002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>exhibit992selectaq117pre003.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: exhibit992selectaq117pre003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>exhibit992selectaq117pre004.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: exhibit992selectaq117pre004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>exhibit992selectaq117pre005.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: exhibit992selectaq117pre005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>exhibit992selectaq117pre006.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: exhibit992selectaq117pre006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>exhibit992selectaq117pre007.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: exhibit992selectaq117pre007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>exhibit992selectaq117pre008.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: exhibit992selectaq117pre008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>exhibit992selectaq117pre009.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: exhibit992selectaq117pre009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>exhibit992selectaq117pre010.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: exhibit992selectaq117pre010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>exhibit992selectaq117pre011.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: exhibit992selectaq117pre011.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>exhibit992selectaq117pre012.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: exhibit992selectaq117pre012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>exhibit992selectaq117pre013.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: exhibit992selectaq117pre013.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>exhibit992selectaq117pre014.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: exhibit992selectaq117pre014.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>exhibit992selectaq117pre015.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: exhibit992selectaq117pre015.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>exhibit992selectaq117pre016.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: exhibit992selectaq117pre016.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>exhibit992selectaq117pre017.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: exhibit992selectaq117pre017.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>g162601mmi001a02.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 21 - file: g162601mmi001a02.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>