SEC Form 4 reporting owner

Davidson Michael H.

Davidson Michael H. has filed 17 Form 4 transactions reported between January 7, 2026 and September 14, 2026, as Chief Executive Officer of NewAmsterdam Pharma Co N.V., a reporting owner of BioAge Labs, Inc. and Director of TENAX THERAPEUTICS, INC..

Name as filed: Davidson Michael H.

Open-market buys, 24 mo

$227K

1 lines

Open-market sales, 24 mo

$10.6M

7 lines

Companies

with Form 4 filings

Latest transaction

Sep 14, 2026

transaction date

Roles and reported holdings

NAMSNewAmsterdam Pharma Co N.V.
Jan 7, 2026 – Sep 14, 2026
Chief Executive Officer
Held directly792,923 sh as of Sep 14, 2026 · Form 4
24 months: $227K bought · $10.6M sold
BIOABioAge Labs, Inc.
Jun 10, 2026
Reporting owner
No common-stock holding reported on a purchase, sale, gift or withholding line.
TENXTENAX THERAPEUTICS, INC.
Jan 9, 2026
Director
No common-stock holding reported on a purchase, sale, gift or withholding line.

Transaction history

All 17 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Sep 14, 2026	NAMSChief Executive Officer	Open-market purchaseCode P · direct	10,000	$22.65	$227K@ $22.65	792,923	Form 4
Jun 10, 2026	BIOA	Grant or awardCode A · direct	22,000	—	—	22,000	Form 4
Mar 2, 2026	NAMSChief Executive Officer	Option exerciseCode M · direct	443,707	—	—	617,851	Form 4
Feb 26, 2026	NAMSChief Executive Officer	Open-market saleCode S · direct	17,924	$34.44	$617K@ $34.44	174,144	Form 4
Feb 26, 2026	NAMSChief Executive Officer	Open-market saleCode S · direct	165,408	$33.63	$5.6M@ $33.63	477,783	Form 4
Feb 26, 2026	NAMSChief Executive Officer	Option exerciseCode M · direct	183,332	—	—	643,191	Form 4
Feb 25, 2026	NAMSChief Executive Officer	Open-market saleCode S · direct	1,300	$36.68	$48K@ $36.68	459,859	Form 4
Feb 25, 2026	NAMSChief Executive Officer	Open-market saleCode S · direct	10,436	$35.96	$375K@ $35.96	461,159	Form 4
Feb 25, 2026	NAMSChief Executive Officer	Open-market saleCode S · direct	46,517	$35.11	$1.6M@ $35.11	471,595	Form 4
Feb 25, 2026	NAMSChief Executive Officer	Option exerciseCode M · direct	58,253	—	—	518,112	Form 4
Feb 24, 2026	NAMSChief Executive Officer	Open-market saleCode S · direct	3,161	$36.46	$115K@ $36.46	459,859	Form 4
Feb 24, 2026	NAMSChief Executive Officer	Open-market saleCode S · direct	61,547	$36.13	$2.2M@ $36.13	463,020	Form 4
Feb 24, 2026	NAMSChief Executive Officer	Option exerciseCode M · direct	64,708	—	—	524,567	Form 4
Jan 9, 2026	TENXDirector	Grant or awardCode A · direct	30,000	—	—	30,000	Form 4
Jan 7, 2026	NAMSChief Executive Officer	Grant or awardCode A · direct	364,000	—	—	364,000	Form 4
Jan 7, 2026	NAMSChief Executive Officer	Grant or awardCode A · direct	81,000	—	—	459,859	Form 4
Jan 7, 2026	NAMSChief Executive Officer	Open-market saleCode S · direct	11,582	—	—	378,859	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.