JANUS HENDERSON GROUP PLC

Holdings History for METSERA, INC. - Common Stock (MTSR)

Symbol: MTSR
Investment type: Equity / Common Stock
Latest Disclosed Shares Owned: 3,242,849 shares
Security Ownership %: 3.1%

Shares, Excluding Options vs Price

Value, Excluding Options

JANUS HENDERSON GROUP PLC ownership in METSERA, INC. Common Stock (MTSR)

17 Feb 2026 - JANUS HENDERSON GROUP PLC has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 3,242,849 shares of METSERA, INC. Common Stock (MTSR). This represents 3.1% ownership of the company. In their previous filing dated 14 Nov 2025, JANUS HENDERSON GROUP PLC had reported owning 5,352,751 shares, indicating a decrease of +39%. .

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filing time
JANUS HENDERSON GROUP PLC	3.1%	-40%	$228,620,854	3,242,849	-2,109,902	-39%	$70.50	13G/A	31 Dec 2025	17 Feb 2026, 12:35
JANUS HENDERSON GROUP PLC	5.1%		$280,109,460	5,352,751			$52.33	13G	30 Sep 2025	14 Nov 2025, 10:29

Holdings date	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
31 Dec 2025		-0.13%	$0	0	-5,352,751	-100%	$70.50	Q4 2025
30 Sep 2025	0.13%	+0.05%	$280,075,022	5,352,751	+1,964,788	+58%	$52.32	Q3 2025
30 Jun 2025	0.05%	+0.01%	$96,399,749	3,387,963	+482,501	+17%	$28.45	Q2 2025
31 Mar 2025	0.04%	+0.04%	$81,337,694	2,905,462	+2,905,462	NEW	$27.99	Q1 2025

* 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.