Stock ownership · SEC 13F · Q4 2025

NEWAMSTERDAM PHARMA COMPANY

Institutional ownership of NEWAMSTERDAM PHARMA COMPANY (CUSIP N62509109) - who holds it, how concentrated it is, and what moved last quarter.

$140K
Reported value
1
Institutions
100%
Top-5 share

The verdict

1 institutions report $140K of NEWAMSTERDAM PHARMA COMPANY positions as of Q4 2025, with ownership heavily concentrated in a handful of holders.

1
institutions hold it
$140K
reported 13F value
100%
held by top 5

Based on long positions reported to the SEC as of Q4 2025; 13F omits shorts, options and non-US holdings.

How 13F ownership is computed · All tracked stocks · Concentration rankings

SEC Form 13F-HR ownership desk

CUSIP N62509109 · Q4 2025 $0M reported

VALUE-TRACE · HOLDERS-FOCUS · CONC-DOM · PHOTO-UNK · ACTIVITY-LIGHT · BOOK-MID

  • VALUE-TRACE $0.1M
  • HOLDERS-FOCUS 1 filers
  • CONC-DOM 100% top-5
  • PHOTO-UNK No peer
  • ACTIVITY-LIGHT 1 new
  • BOOK-MID 4Q history

Read with: Ownership concentration guide - NEWAMSTERDAM PHARMA COMPANY's top-five holders account for 100% of reported value — read concentration before treating any single filer as a signal.

Institutional ownership over time

The number of institutions reporting a NEWAMSTERDAM PHARMA COMPANY position has fallen from 2 to 1 over the last 4 quarters of 13F filings.

0.511.522.5 Q1'24Q2'25Q3'25Q4'25 1
Distinct 13F filers holding NEWAMSTERDAM PHARMA COMPANY, by quarter

Top Institutional Holders

# Institution Shares Value Share of reported
1 Seven Fleet Capital Management LP 4,000 $140K 100.0%

Investment Discretion

SEC Form 13F requires each institutional filer to report whether it exercises sole or shared discretion over a position. Among NEWAMSTERDAM PHARMA COMPANY's reported holders for Q4 2025, by reported value:

Sole discretion (SOLE)
100.0%

Latest Quarter Activity · Q4 2025

New positions (1)

Seven Fleet Capital Management LP $140K

Complete exits (2)

JPMORGAN CHASE & CO (JPM, AMJB, VYLD, JPM-PC, JPM-PD, JPM-PJ, JPM-PK, JPM-PL, JPM-PM) exited
CIBC Private Wealth Group LLC exited

Frequently Asked Questions

How many institutions hold NEWAMSTERDAM PHARMA COMPANY?▼
NEWAMSTERDAM PHARMA COMPANY is held by 1 institutional investors per the latest SEC Form 13F filings as of Q4 2025.
What is the total institutional value of NEWAMSTERDAM PHARMA COMPANY?▼
Institutions report $140K of NEWAMSTERDAM PHARMA COMPANY as of Q4 2025.
How concentrated is ownership of NEWAMSTERDAM PHARMA COMPANY?▼
The top five institutional holders account for 100% of the reported institutional value in NEWAMSTERDAM PHARMA COMPANY, making ownership heavily concentrated in a handful of holders.
Who is the largest institutional holder of NEWAMSTERDAM PHARMA COMPANY?▼
Seven Fleet Capital Management LP is the largest reported holder of NEWAMSTERDAM PHARMA COMPANY with $140K across 4,000 shares as of Q4 2025.

Source: U.S. Securities and Exchange Commission (SEC) - EDGAR Form 13F-HR institutional holdings filings · Q4 2025 13F-HR discloses long US-listed equity positions of managers with $100M+ qualifying assets, filed within 45 days of period end. Short positions and most derivatives are not disclosed.

PlainFundData is rendered directly from SEC EDGAR Form 13F-HR institutional holdings filings, no number is typed in by an editor. Holder lists, concentration, and reported value on this page are aggregated live from those 13F-HR extracts. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-16.