[144] NewAmsterdam Pharma Company N.V. Warrant SEC Filing

Rhea-AI Filing Summary

NewAmsterdam Pharma Company N.V. (ticker NAMSW) has filed a Form 144 indicating that affiliate NAP PoolCo B.V. intends to sell up to 1,433,193 ordinary shares through UBS Financial Services on or after 14 July 2025. Based on the filing’s stated market value of $30.9 million, the proposed sale represents roughly 1.3 % of the company’s 112.3 million shares outstanding, potentially expanding the public float.

The notice also discloses that the same seller disposed of 303,197 shares on 16 June 2025 for gross proceeds of $5.9 million. No additional information regarding 10b5-1 plans, pricing discounts or company performance was provided. Form 144 is a standard regulatory requirement for affiliates; however, the magnitude of the sale could create short-term share-price pressure and may signal insider monetisation.

Positive

• Float expansion: Adding ~1.3 % of outstanding shares to the public float may enhance trading liquidity.

Negative

• Sizeable insider sale: Planned disposition of 1.43 M shares valued at $30.9 M could pressure the stock and signal lower insider confidence.
• Continued selling trend: Seller already disposed of 303,197 shares in June 2025, indicating ongoing liquidation.

Insights

Securities Analyst

TL;DR: Insider plans to sell 1.43 M NAMSW shares (~1.3 % O/S) worth $30.9 M; neutral-to-slightly negative sentiment.

The Form 144 filing signals a sizable insider liquidation by NAP PoolCo B.V. While Rule 144 sales are routine, the volume—over one percent of shares outstanding—can weigh on near-term supply/demand dynamics and be interpreted by some investors as reduced insider conviction. That said, the company’s free float will increase, potentially improving liquidity. The prior June sale shows an ongoing divestment pattern but is not large enough to materially impair control. Absent operating data, the filing’s impact hinges on market perception of insider selling rather than fundamentals.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	UBS Financial Services Inc. 1000 Harbor Boulevard 3rd Floor Weehawken NJ 07016	1433193	30899641.10	112270677	07/14/2025	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	11/15/2022	Initial Public Offering	Issuer			1433193	11/15/2022	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
NAP PoolCo B.V. GOOIMEER 2-35 NARRDEN P7 1411DC	Ordinary	06/16/2025	303197	5912341.50

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

How many NAMSW shares are insiders planning to sell?

The filing covers up to 1,433,193 ordinary shares to be sold by NAP PoolCo B.V.

What is the market value of the proposed Form 144 sale?

The aggregate market value stated in the filing is approximately $30.9 million.

What percentage of NewAmsterdam Pharma’s shares outstanding does the sale represent?

It represents roughly 1.3 % of the 112,270,677 shares outstanding.

When are the NAMSW shares expected to be sold?

The approximate sale date listed is 14 July 2025.

Who is executing the transaction for the seller?

UBS Financial Services Inc. is the designated broker for the sale on Nasdaq.

Were any NAMSW shares sold recently by the same insider?

Yes, 303,197 shares were sold on 16 June 2025 for $5.9 million in gross proceeds.