<SEC-DOCUMENT>0000934999-16-000027.txt : 20160902
<SEC-HEADER>0000934999-16-000027.hdr.sgml : 20160902
<ACCEPTANCE-DATETIME>20160902100131
ACCESSION NUMBER:		0000934999-16-000027
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20160902
DATE AS OF CHANGE:		20160902

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PROS Holdings, Inc.
		CENTRAL INDEX KEY:			0001392972
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROGRAMMING SERVICES [7371]
		IRS NUMBER:				760168604
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-83766
		FILM NUMBER:		161867351

	BUSINESS ADDRESS:	
		STREET 1:		3100 MAIN STREET
		STREET 2:		SUITE 900
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77002
		BUSINESS PHONE:		713-335-5151

	MAIL ADDRESS:	
		STREET 1:		3100 MAIN STREET
		STREET 2:		SUITE 900
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77002

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DF DENT & CO INC
		CENTRAL INDEX KEY:			0000934999
		IRS NUMBER:				521045317
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		400 EAST PRATT STREET
		STREET 2:		7TH FLOOR
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21202
		BUSINESS PHONE:		4108372544

	MAIL ADDRESS:	
		STREET 1:		DF DENT & CO INC
		STREET 2:		400 EAST PRATT STREET
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21202
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>pro2016.txt
<DESCRIPTION>PROS 13G
<TEXT>
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.F. 20549



SCHEDULE 13G

PROS HOLDINGS, INC.
Common Stock
74346Y103

Item 1.	a.	PROS Holdings, Inc.
		b.	3100 Main Street
			Suite 900
			Houston, TX 77002

Item 2.	a.	D.F. Dent & Company, Inc.
		b.	400 East Pratt Street, 7th Floor
			Baltimore, Maryland 21202
		c.	Incorporated in the State of Maryland
		d.	Common stock
		e.	74346Y103

Item 3.	Investment adviser registered under section 203 of the
Investment
		Advisers Act of 1940

Item 4.	a.	30,389,000
		b.	5.20%
		c.	1.	1,580,150
			2.	      0
			3.	1,580,150
			4.
Item 5.		N/A
Item 6.		N/A
Item 7.		N/A
Item 8.		N/A
Item 9.		N/A




</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>