Metsera, Inc. - COMMON STOCK (MTSR)

Historical Holders from Q1 2025 to Q3 2025

Symbol: MTSR
Type / Class: Equity / COMMON STOCK
Shares outstanding: 104,955,902
All holders as of 30 Sep 2025: Q3 2025
Total 13F shares, excl. options: 64,760,616
Holdings value: $3,388,896,544
% of all portfolios: 0.002%
Number of holders: 152
Number of buys: 111
Number of sells: -43
Average buys %: +0%
Average sells %: -0%

Reported Shares, Excluding Options vs Price

Reported Value, Excluding Options

Total Investors

Significant Owners of Metsera, Inc. - COMMON STOCK (MTSR)

Filer	Ownership	Change %	Holdings Value	Net Change	Nb Shares	Change %	Reporting Name	Report Period
Validae Health, L.P.	12.5%		$346,544,669		13,136,644		Christopher Whitten Bernard	31 Mar 2025
VANGUARD GROUP INC	5.53%		$304,823,049		5,824,993		The Vanguard Group	30 Sep 2025
JANUS HENDERSON GROUP PLC	5.1%		$280,109,460		5,352,751		JANUS HENDERSON GROUP PLC	30 Sep 2025

Institutional Holders of Metsera, Inc. - COMMON STOCK (MTSR)

Period	Reported Shares, Excl. Options	Value, Excl. Options	Change	Puts Notional Value	Calls Notional Value	Price	Investors
2025 Q3	64,760,616	$3,388,896,544	+$398,026,936	$33,861,277	$12,569,666	$52.33	152
2025 Q2	61,110,674	$1,738,613,325	+$190,248,205	$1,695,620	$1,513,540	$28.45	107
2025 Q1	54,515,246	$1,486,157,710	+$1,485,323,689			$27.22	79