Metsera, Inc. (MTSR) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2025-11-17

Metsera, Inc. (MTSR) — no SEC Form 4 insider filings recorded in the last 90 days. InsiderAlpha tracks every MTSR SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About Metsera, Inc. (MTSR)

SIC classification	Pharmaceutical Preparations (SIC 2834)
SEC CIK	0002040807

Recent MTSR Insider Transactions (Form 4)

Date	Insider	Role	Transaction	Shares	Price	Value	Filing
2025-11-13	Population Health Partners GP, LLC	Insider	D — Derivative transaction	127.7K	—	—	SEC
2025-11-13	MEANWELL CLIVE	EXECUTIVE CHAIRMAN	D — Derivative transaction	5.4K	—	—	SEC
2025-11-13	MEANWELL CLIVE	EXECUTIVE CHAIRMAN	D — Derivative transaction	12.77M	—	—	SEC
2025-11-13	Burow Kristina	Insider	D — Derivative transaction	18.50M	—	—	SEC
2025-11-13	Burow Kristina	Insider	D — Derivative transaction	7.52M	—	—	SEC
2025-11-13	Burow Kristina	Insider	D — Derivative transaction	8.31M	—	—	SEC
2025-11-13	Visioli Christopher	CHIEF FINANCIAL OFFICER	D — Derivative transaction	21.2K	—	—	SEC
2025-11-13	Hubbard Brian	CHIEF SCIENTIFIC OFFICER	D — Derivative transaction	17.0K	—	—	SEC
2025-11-13	Burow Kristina	Insider	D — Derivative transaction	2.7K	—	—	SEC
2025-11-13	Burow Kristina	Insider	D — Derivative transaction	17.07M	—	—	SEC
2025-11-13	Pinto Joshua	Insider	D — Derivative transaction	2.7K	—	—	SEC
2025-11-13	Stonehouse Jon P	Insider	D — Derivative transaction	2.7K	—	—	SEC
2025-11-13	Bernard Christopher Whitten	See Remarks	D — Derivative transaction	21.2K	—	—	SEC
2025-11-13	Bernard Christopher Whitten	See Remarks	D — Derivative transaction	12.77M	—	—	SEC
2025-11-13	Population Health Partners GP, LLC	Insider	D — Derivative transaction	12.64M	—	—	SEC

All transactions sourced from SEC EDGAR Form 4 filings for Metsera, Inc. (MTSR). Updated in real time as new filings are submitted to the SEC.

Recent Insider Filings

2025-11-17 — FMR LLC (Insider)
2025-11-17 — FMR LLC (Insider)
2025-11-14 — Marso Steven (CHIEF MEDICAL OFFICER)
2025-11-14 — BERNS PAUL L (Insider)
2025-11-14 — Lang Matthew (CHIEF LEGAL OFFICER)

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in MTSR insider filings:

P	Open-market purchase by the insider
S	Open-market sale by the insider
A	Grant, award, or other acquisition from the issuer
M	Exercise or conversion of derivative security (e.g. options)
F	Payment of exercise price or tax liability via share withholding
G	Bona-fide gift of securities
D	Disposition to the issuer (e.g. share buyback participation)
J	Other acquisition or disposition
X	Exercise of in-the-money or at-the-money derivative security
C	Conversion of derivative security
V	Transaction voluntarily reported earlier than required

MTSR Insider Trading — FAQ

What is the latest insider trade for MTSR?: Metsera, Inc. (MTSR) had 0 insider filings in the last 90 days, with the most recent on 2025-11-17. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying MTSR stock?: 0 insider purchases of MTSR were filed in the last 90 days.
How many insiders are selling MTSR stock?: 0 insider sales of MTSR were filed in the last 90 days.
Where can I see MTSR SEC filings (Form 4, 10-K, 10-Q, 8-K)?: InsiderAlpha aggregates every MTSR SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

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