MTSR

Metsera, Inc.

Total Trades

2

Buys

0

Sells

2

Largest Trade

$1K–$15K

Insiders

1

Institutional Funds

1

Inst. Value

<$1K

Activist Filings

10

Insider Trades

InsiderTitleTypeValueSharesPriceDate
FMR LLC10% OwnerSELL$1K–$15K193$61.23Nov 5, 2025
FMR LLC10% OwnerSELL$1K–$15K268$36.00Sep 4, 2025
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Institutional Ownership

13F filings as of Dec 31, 2025 · 1 funds holding

FundShares
IFP Advisors, Inc8

Activist & 5%+ Owners

SC 13D/13G filings — investors holding 5%+ of outstanding shares

JANUS HENDERSON GROUP PLC

SC 13G/A · Feb 17, 2026

3.1%

3.2M shares

FMR LLC

SC 13G/A · Nov 17, 2025

0.0%

0 shares

ARCH Venture Fund XII, L.P.

SC 13D/A · Nov 14, 2025

0.0%

0 shares

JANUS HENDERSON GROUP PLC

SC 13G · Nov 14, 2025

5.1%

5.4M shares

Population Health Partners, L.P.

SC 13G/A · Nov 14, 2025

0.0%

0 shares

The Vanguard Group

SC 13G · Oct 31, 2025

5.5%

5.8M shares

Validae Health, L.P.

SC 13G · Jun 3, 2025

12.2%

12.8M shares

FMR LLC

SC 13G/A · May 12, 2025

14.4%

15.2M shares

ARCH Venture Fund XII, L.P.

SC 13D · Feb 11, 2025

25.5%

26.8M shares

FMR LLC

SC 13G · Feb 5, 2025

10.5%

11.1M shares