NAMS Form 144: Proposed sales of ordinary shares

NAMS submitted a Form 144 reporting proposed sales of Ordinary Shares through J.P.

Rhea-AI Filing Summary

NAMS submitted a Form 144 reporting proposed sales of Ordinary Shares through J.P. Morgan Securities LLC. The filing lists multiple lots acquired via RSU awards, purchases and option exercise on dates including 12/11/2025, 05/13/2025, 04/02/2025, 02/14/2024, 12/19/2023, and 06/07/2023, with lot sizes shown such as 68, 69, 3,102, 5,000, 9,787, and 10,000. The broker is listed as J.P. Morgan Securities LLC on Nasdaq.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does NAMS' Form 144 filing report?

It reports proposed sales of Ordinary Shares through J.P. Morgan Securities LLC. The filing lists acquisition dates and lot sizes, including RSU awards and purchases on specific dates such as 04/02/2025 and 02/14/2024.

Which broker is handling the sales in the NAMS Form 144?

The broker named is J.P. Morgan Securities LLC. The filing header lists J.P. Morgan Securities LLC, 270 Park Avenue, as the broker for the reported proposed sales on Nasdaq.

What acquisition types are shown in the NAMS excerpt?

Acquisition types include RSU awards, purchases, and a stock option exercise. The excerpt shows multiple RSU award dates and at least one option exercise dated 12/19/2023 with listed lot sizes.

What share lot sizes appear in the NAMS filing excerpt?

Lot sizes shown include 68, 69, 3,102, 5,000, 9,787, and 10,000. These correspond to specific acquisition dates listed in the excerpt.

Does the excerpt state shares sold in the past three months for NAMS?

The excerpt includes a heading for 'Securities Sold During The Past 3 Months' but does not list specific amounts under that heading in the provided text. The filing shows acquisition lots and proposed sales information.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 03/06/2026 - 05:52 PM EST Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001238401
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	NewAmsterdam Pharma Company N.V.
SEC File Number	001-41562
Address of Issuer	Gooimeer 2-35 DC Naarden NETHERLANDS 1411
Phone	31-0-35-206-2971
Name of Person for Whose Account the Securities are To Be Sold	Louis G. Lange
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Affiliate

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Ordinary Shares	J.P. Morgan Securities LLC 270 Park Avenue - 10th Floor New York NY 10017	28186	878839.48	114975422	03/06/2026	Nasdaq

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Ordinary Shares	12/11/2025	RSU Award	Issuer			68	12/11/2025	Compensation
Ordinary Shares	05/13/2025	RSU Award	Issuer			69	05/13/2025	Compensation
Ordinary Shares	04/02/2025	RSU Award	Issuer			3102	04/02/2025	Compensation
Ordinary Shares	04/02/2025	RSU Award	Issuer			69	04/02/2025	Compensation
Ordinary Shares	02/14/2024	Purchase	Issuer			5000	02/14/2024	Cash
Ordinary Shares	12/19/2023	Stock Option Exercise	Issuer			9787	12/19/2023	Cash
Ordinary Shares	06/07/2023	Purchase	Issuer			10000	06/07/2023	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks	The shares represented on this filing are being sold by The LG Lange III Trust DTD 10/12/16, Louis G. Lange as Trustee
Date of Notice	03/06/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/04/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Louis G. Lange
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)