Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

Metsera, Inc.

MTSR · — · CIK 0002040807 · Healthcare

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

0 Form 4 transaction lines observed in the same window
0 sales · 0 option, withholding, award, gift or other lines

Last qualifying purchase2025-02-03 · Burow Kristina · $40.0M

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesNone
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

No Form 4 transaction event is present in the current 180-day window.

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2025-02-03 · Burow Kristina.

Recent Form 4 activity

0Purchases
1Sales
33Other Form 4 lines
16SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER0 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

The FINRA report lists no short interest for this ticker.

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2025-02-03Burow KristinaPurchase (P)Common Stock2,222,222USD 18.00USD 39,999,996SEC filing ↗
2025-02-03BERNS PAUL LPurchase (P)Common Stock789,998USD 18.00USD 14,219,964SEC filing ↗
2025-02-03ARCH Venture Fund XII, L.P.; ARCH Venture Fund XIII, L.P.; ARCH Venture Partners XII, L.P.; ARCH Venture Partners XII, LLC; ARCH Venture Partners XIII, L.P.; ARCH Venture Partners XIII, LLC; CRANDELL KEITH; GILLIS STEVEN; NELSEN ROBERTPurchase (P)Common Stock2,222,222USD 18.00USD 39,999,996SEC filing ↗

Form 4 evidence

34 transaction lines in the latest 365-day window; 56 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2025-11-13FMR LLCJ (J)Common Stock2,233,460USD —USD —SEC filing ↗
2025-11-13ARCH Venture Fund XII, L.P.; ARCH Venture Fund XIII, L.P.; ARCH Venture Partners XII, L.P.; ARCH Venture Partners XII, LLC; ARCH Venture Partners XIII, L.P.; ARCH Venture Partners XIII, LLC; CRANDELL KEITH; GILLIS STEVEN; NELSEN ROBERTD (D)Common Stock26,816,808USD —USD —SEC filing ↗
2025-11-13Visioli ChristopherD (D)Common Stock21,250USD —USD —SEC filing ↗
Show recent Form 4 evidence (17 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2025-11-13FMR LLCJ (J)Common Stock2,233,460USD —USD —SEC filing ↗
2025-11-13ARCH Venture Fund XII, L.P.; ARCH Venture Fund XIII, L.P.; ARCH Venture Partners XII, L.P.; ARCH Venture Partners XII, LLC; ARCH Venture Partners XIII, L.P.; ARCH Venture Partners XIII, LLC; CRANDELL KEITH; GILLIS STEVEN; NELSEN ROBERTD (D)Common Stock26,816,808USD —USD —SEC filing ↗
2025-11-13Visioli ChristopherD (D)Common Stock21,250USD —USD —SEC filing ↗
2025-11-13Stonehouse Jon PD (D)Common Stock2,688USD —USD —SEC filing ↗
2025-11-13Population Health Partners GP, LLCD (D)Common Stock12,767,462USD —USD —SEC filing ↗
2025-11-13Pinto JoshuaD (D)Common Stock2,688USD —USD —SEC filing ↗
2025-11-13Marso StevenD (D)Common Stock17,000USD —USD —SEC filing ↗
2025-11-13MEANWELL CLIVED (D)Common Stock12,772,837USD —USD —SEC filing ↗
2025-11-13Lang MatthewD (D)Common Stock12,500USD —USD —SEC filing ↗
2025-11-13Hubbard BrianD (D)Common Stock17,000USD —USD —SEC filing ↗
2025-11-13Burow KristinaD (D)Common Stock51,414,082USD —USD —SEC filing ↗
2025-11-13Bernard Christopher WhittenD (D)Common Stock12,788,712USD —USD —SEC filing ↗
2025-11-13BERNS PAUL LD (D)Common Stock16,798,952USD —USD —SEC filing ↗
2025-11-11Validae Health, L.P.J (J)Common Stock12,767,462USD 0.00USD 0SEC filing ↗
2025-11-10FMR LLCGift (G)Common Stock860,722USD 0.00USD 0SEC filing ↗
2025-11-03FMR LLCSale (S)Common Stock193USD 61.23USD 11,817SEC filing ↗
2025-11-03FMR LLCJ (J)Common Stock10,569,193USD 0.00USD 0SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerMTSR
CIK0002040807
SectorHealthcare
Industry— Yahoo Finance
SEC SIC2834 Pharmaceutical Preparations
Exchange—

Data coverage

Local Form 4 history56 transaction lines from 2025-01-30 to 2025-11-13
5 P purchase lines · 2 S sale lines · 49 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.