Janus Henderson Group Plc

13F Holdings History for Mereo BioPharma Group plc - American Depositary Shares, each representing five ordinary shares, nominal value of (pound)0.003 per share (MREO)

Symbol: MREO on Nasdaq
Investment type: Equity / American Depositary Shares, each representing five ordinary shares, nominal value of (pound)0.003 per share
Latest Disclosed Ownership: 16.3M shares
Security Ownership: 10.2%

Shares, Excluding Options vs Price

Value, Excluding Options

JANUS HENDERSON GROUP PLC ownership in Mereo BioPharma Group plc American Depositary Shares, each representing five ordinary shares, nominal value of (pound)0.003 per share (MREO)

2025-11-14 - JANUS HENDERSON GROUP PLC has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 16.3M shares of Mereo BioPharma Group plc American Depositary Shares, each representing five ordinary shares, nominal value of (pound)0.003 per share (MREO). This represents 10.2% percent ownership of the company. In their previous filing dated 2025-08-14, JANUS HENDERSON GROUP PLC had reported owning 17.7M shares, indicating a decrease of -7.91% percent.

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filed at
JANUS HENDERSON GROUP PLC	10.2%	-8.18%	$33.6M	16.3M	-1,398,462	-7.91%	$2.06	13G/A	9/30/2025	14 Nov 2025 11:58:57
JANUS HENDERSON GROUP PLC	11.1%	-22.9%	$31M	17.7M	-5,046,529	-22.2%	$1.75	13G/A	6/30/2025	14 Aug 2025 11:15:15
JANUS HENDERSON GROUP PLC	14.3%	+30%	$44.3M	22.7M	+5,612,558	+32.8%	$1.95	13G/A	3/31/2025	14 May 2025 11:59:51
JANUS HENDERSON GROUP PLC	14.3%	+40%	$44.3M	22.7M	+6,817,862	+42.8%	$1.95	13G/A	3/31/2025	14 May 2025 16:34:46
JANUS HENDERSON GROUP PLC	11%		$33.4M	17.1M			$1.95	13G/A	12/31/2024	14 Feb 2025 12:09:16
JANUS HENDERSON GROUP PLC	10.3%		$31M	15.9M			$1.95	13G/A	11/29/2024	6 Dec 2024 11:37:10

Holdings date	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
9/30/2025	0.02%	0%	$33.6M	16.3M	-1,398,462	-7.91%	$2.07	Q3 2025
6/30/2025	0.02%	-0.01%	$48.1M	17.7M	-5,046,529	-22.2%	$2.72	Q2 2025
3/31/2025	0.03%	+0.01%	$52.4M	22.7M	+5,612,558		$2.31	Q1 2025
12/31/2024	0.03%	+0.01%	$59.8M	17.1M	+4,776,697	+38.7%	$3.50	Q4 2024
9/30/2024	0.03%	+0.01%	$50.9M	12.3M	+4,464,984	+56.7%	$4.12	Q3 2024
6/30/2024	0.02%	+0.01%	$28.4M	7.88M	+2,760,309	+53.9%	$3.61	Q2 2024
3/31/2024	0.01%	+0.01%	$16.9M	5.12M	+5,120,573	NEW	$3.31	Q1 2024
3/31/2021		0%	$0	0	-1,124,678	-100%		Q1 2021
12/31/2020	0%	+0%	$4M	1.12M	+1,124,678	NEW	$3.55	Q4 2020

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.