SEC Form 4 reporting owner

Lange Louis G

Lange Louis G has filed 6 Form 4 transactions reported between January 7, 2026 and March 11, 2026, as a reporting owner of NewAmsterdam Pharma Co N.V..

Name as filed: LANGE LOUIS G

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$2.2M

3 lines

Companies

with Form 4 filings

Latest transaction

Mar 11, 2026

transaction date

Roles and reported holdings

NAMSNewAmsterdam Pharma Co N.V.
Jan 7, 2026 – Mar 11, 2026
Reporting owner
Held directly10,360 sh as of Mar 11, 2026 · Form 4
Held indirectly (latest line)0 sh as of Mar 6, 2026 · Form 4
24 months: $2.2M sold

Transaction history

All 6 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Mar 11, 2026	NAMS	Open-market saleCode S · direct	446	$31.23	$14K@ $31.23	10,360	Form 4
Mar 11, 2026	NAMS	Open-market saleCode S · direct	44,173	$30.41	$1.3M@ $30.41	10,806	Form 4
Mar 9, 2026	NAMS	Option exerciseCode X · direct	44,619	$11.50	$513K@ $11.50	54,979	Form 4
Mar 6, 2026	NAMS	Open-market saleCode S · indirect	28,186	$29.41	$829K@ $29.41	0	Form 4
Jan 7, 2026	NAMS	Grant or awardCode A · direct	15,300	—	—	15,300	Form 4
Jan 7, 2026	NAMS	Grant or awardCode A · direct	3,400	—	—	10,360	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.