<SEC-DOCUMENT>0001172661-22-000980-index.html : 20220215
<SEC-HEADER>0001172661-22-000980.hdr.sgml : 20220215
<ACCEPTANCE-DATETIME>20220215124438
ACCESSION NUMBER:		0001172661-22-000980
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20220215
DATE AS OF CHANGE:		20220215

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Mereo Biopharma Group plc
		CENTRAL INDEX KEY:			0001719714
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			X0
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-91444
		FILM NUMBER:		22638085

	BUSINESS ADDRESS:	
		STREET 1:		ONE CAVENDISH PLACE
		STREET 2:		FOURTH FLOOR
		CITY:			LONDON
		STATE:			X0
		ZIP:			W1G0QF
		BUSINESS PHONE:		4403330237300

	MAIL ADDRESS:	
		STREET 1:		ONE CAVENDISH PLACE
		STREET 2:		FOURTH FLOOR
		CITY:			LONDON
		STATE:			X0
		ZIP:			W1G0QF

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Rock Springs Capital Management LP
		CENTRAL INDEX KEY:			0001595725
		IRS NUMBER:				800944416
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		650 SOUTH EXETER STREET
		STREET 2:		SUITE 1070
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21202
		BUSINESS PHONE:		4102200129

	MAIL ADDRESS:	
		STREET 1:		650 SOUTH EXETER STREET
		STREET 2:		SUITE 1070
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21202
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>rocksprings-mreo123121.htm
<TEXT>
Document 1 - file: rocksprings-mreo123121.htm

</DOCUMENT>
</SEC-DOCUMENT>