Form 8-K · Current Report · Filed 2025-11-13
Pfizer Completes Acquisition of Metsera, Inc.
On November 13, 2025, Pfizer Inc. completed its acquisition of Metsera, Inc. through a merger. As a result, Metsera, Inc.'s common stock ceased trading on Nasdaq and was delisted. The board of directors of Metsera, Inc. resigned, and new directors from Pfizer's subsidiary were appointed. Additionally, Pfizer issued contingent value rights to certain shareholders based on the achievement of specified milestones related to the development of Metsera's products.
- Filer
- MTSR MTSR
- Filed
- Accession
- 0001193125-25-280387
- CIK
- 0002040807
- Signal
- High impact
- Source
- Official filing on sec.gov ↗
Items reported
Completion of Acquisition or Disposition of Assets
Notice of Delisting or Failure to Satisfy a Listing Rule
Changes in Control of Registrant
Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers
Other Events
Market reaction
Close before filing
$70.75
Next session
-0.4%
Since filing
-0.4%
Latest close
$70.50
What happened, not what will happen — closing prices around the filing date.
Precedent
Previous filings from MTSR reporting the same item, with the next session's move:
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