NAMS Insider Trading

Net Selling · 180d
Open-Market Buys (180d)
$0
0 insiders
Open-Market Sells (180d)
$49.2M
5 insiders
Net Insider Flow
-$49.2M
open market, 180d
Reporting Insiders
5
33 P/S transactions
Build

Build on these Form 4 transactions

The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.

Recent Form 4 Transactions

100 shown
DateInsiderRoleActionSharesPriceValue
Mar 11, 2026Lange Louis GDirectorSell(S)446$31.23$14K
Mar 11, 2026Lange Louis GDirectorSell(S)44K$30.41$1.3M
Mar 9, 2026Kastelein Johannes Jacob PieterChief Scientific Officer, DirectorSell(S)101K$30.29$3.1M
Mar 9, 2026Kastelein Johannes Jacob PieterChief Scientific Officer, DirectorOption exercise(M)101K
Mar 9, 2026Kastelein Johannes Jacob PieterChief Scientific Officer, DirectorOption exercise(M)101K$0
Mar 9, 2026Lange Louis GDirectorOption exercise(X)45K$11.50$513K
Mar 9, 2026Lange Louis GDirectorOption exercise(X)45K$0
Mar 6, 2026Kastelein Johannes Jacob PieterChief Scientific Officer, DirectorOption exercise(M)94K
Mar 6, 2026Kastelein Johannes Jacob PieterChief Scientific Officer, DirectorSell(S)94K$30.32$2.9M
Mar 6, 2026Kastelein Johannes Jacob PieterChief Scientific Officer, DirectorOption exercise(M)94K$0
Mar 6, 2026Lange Louis GDirectorSell(S)28K$29.41$829K
Mar 5, 2026Kastelein Johannes Jacob PieterChief Scientific Officer, DirectorOption exercise(M)104K
Mar 5, 2026Kastelein Johannes Jacob PieterChief Scientific Officer, DirectorSell(S)104K$30.30$3.2M
Mar 5, 2026Kastelein Johannes Jacob PieterChief Scientific Officer, DirectorOption exercise(M)104K$0
Mar 2, 2026Davidson Michael H.Chief Executive Officer, DirectorSell(S)444K$33.25$14.8M
Mar 2, 2026Davidson Michael H.Chief Executive Officer, DirectorOption exercise(M)444K
Mar 2, 2026Davidson Michael H.Chief Executive Officer, DirectorOption exercise(M)444K$0
Feb 26, 2026Davidson Michael H.Chief Executive Officer, DirectorOption exercise(M)183K
Feb 26, 2026Davidson Michael H.Chief Executive Officer, DirectorSell(S)165K$33.63$5.6M
Feb 26, 2026Davidson Michael H.Chief Executive Officer, DirectorSell(S)18K$34.44$617K
Feb 26, 2026Davidson Michael H.Chief Executive Officer, DirectorOption exercise(M)183K$0
Feb 25, 2026Davidson Michael H.Chief Executive Officer, DirectorOption exercise(M)58K
Feb 25, 2026Davidson Michael H.Chief Executive Officer, DirectorSell(S)47K$35.11$1.6M
Feb 25, 2026Davidson Michael H.Chief Executive Officer, DirectorSell(S)10K$35.96$375K
Feb 25, 2026Davidson Michael H.Chief Executive Officer, DirectorSell(S)1K$36.68$48K
Feb 25, 2026Davidson Michael H.Chief Executive Officer, DirectorOption exercise(M)58K$0
Feb 24, 2026Davidson Michael H.Chief Executive Officer, DirectorOption exercise(M)65K
Feb 24, 2026Davidson Michael H.Chief Executive Officer, DirectorSell(S)62K$36.13$2.2M
Feb 24, 2026Davidson Michael H.Chief Executive Officer, DirectorSell(S)3K$36.46$115K
Feb 24, 2026Davidson Michael H.Chief Executive Officer, DirectorOption exercise(M)65K$0
Feb 20, 2026Kastelein Johannes Jacob PieterChief Scientific Officer, DirectorSell(S)31K$35.46$1.1M
Feb 20, 2026Kastelein Johannes Jacob PieterChief Scientific Officer, DirectorSell(S)15K$35.00$514K
Jan 28, 2026Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)33K$10.90$355K
Jan 28, 2026Kooij Louise FrederikaChief Accounting OfficerSell(S)33K$31.80$1.0M
Jan 28, 2026Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)33K$0
Jan 27, 2026Kooij Louise FrederikaChief Accounting OfficerSell(S)40K$32.62$1.3M
Jan 27, 2026Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)40K$10.90$434K
Jan 27, 2026Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)40K$0
Jan 26, 2026Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)34K$10.90$375K
Jan 26, 2026Kooij Louise FrederikaChief Accounting OfficerSell(S)34K$32.77$1.1M
Jan 26, 2026Kooij Louise FrederikaChief Accounting OfficerSell(S)309$33.45$10K
Jan 26, 2026Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)34K$0
Jan 23, 2026Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)38K$10.90$416K
Jan 23, 2026Kooij Louise FrederikaChief Accounting OfficerSell(S)25K$33.44$850K
Jan 23, 2026Kooij Louise FrederikaChief Accounting OfficerSell(S)13K$34.37$439K
Jan 23, 2026Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)38K$0
Jan 21, 2026Somaiya Mayur IanChief Financial OfficerSell(S)24K$33.80$823K
Jan 21, 2026Somaiya Mayur IanChief Financial OfficerSell(S)15K$33.25$513K
Jan 21, 2026Somaiya Mayur IanChief Financial OfficerOption exercise(M)40K$9.26$368K
Jan 21, 2026Somaiya Mayur IanChief Financial OfficerOption exercise(M)40K$0
Jan 20, 2026Somaiya Mayur IanChief Financial OfficerOption exercise(M)60K$9.26$558K
Jan 20, 2026Somaiya Mayur IanChief Financial OfficerSell(S)20K$32.38$635K
Jan 20, 2026Somaiya Mayur IanChief Financial OfficerSell(S)40K$31.78$1.3M
Jan 20, 2026Somaiya Mayur IanChief Financial OfficerSell(S)900$30.64$28K
Jan 20, 2026Somaiya Mayur IanChief Financial OfficerOption exercise(M)60K$0
Jan 7, 2026Somaiya Mayur IanChief Financial OfficerGrant(A)26K
Jan 7, 2026Somaiya Mayur IanChief Financial OfficerGrant(A)115K$0
Jan 7, 2026Kooij Louise FrederikaChief Accounting OfficerGrant(A)12K
Jan 7, 2026Kooij Louise FrederikaChief Accounting OfficerGrant(A)54K$0
Jan 7, 2026Kastelein Johannes Jacob PieterChief Scientific Officer, DirectorGrant(A)26K
Jan 7, 2026Kastelein Johannes Jacob PieterChief Scientific Officer, DirectorGrant(A)115K$0
Jan 7, 2026Lange Louis GDirectorGrant(A)3K
Jan 7, 2026Lange Louis GDirectorGrant(A)15K$0
Jan 7, 2026McKenna Mark C.DirectorGrant(A)3K
Jan 7, 2026McKenna Mark C.DirectorGrant(A)15K$0
Jan 7, 2026Smither John WDirectorGrant(A)3K
Jan 7, 2026Smither John WDirectorGrant(A)15K$0
Jan 7, 2026Lewis WilliamDirectorGrant(A)3K
Jan 7, 2026Lewis WilliamDirectorGrant(A)15K$0
Jan 7, 2026Davidson Michael H.Chief Executive Officer, DirectorGrant(A)81K
Jan 7, 2026Davidson Michael H.Chief Executive Officer, DirectorSell(S)12K
Jan 7, 2026Davidson Michael H.Chief Executive Officer, DirectorGrant(A)364K$0
Jan 7, 2026Gulfo Adele M.DirectorGrant(A)3K
Jan 7, 2026Gulfo Adele M.DirectorGrant(A)15K$0
Jan 7, 2026van der Kamp Hilde JohannaDirectorGrant(A)3K
Jan 7, 2026van der Kamp Hilde JohannaDirectorGrant(A)15K$0
Jan 5, 2026Somaiya Mayur IanChief Financial OfficerSell(S)5K$33.25$170K
Jan 5, 2026Kooij Louise FrederikaChief Accounting OfficerSell(S)3K$33.25$88K
Jan 5, 2026Kastelein Johannes Jacob PieterChief Scientific Officer, DirectorSell(S)6K$33.25$200K
Dec 26, 2025Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)39K$10.00$389K
Dec 26, 2025Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)5K$10.90$55K
Dec 26, 2025Kooij Louise FrederikaChief Accounting OfficerSell(S)44K$35.30$1.5M
Dec 26, 2025Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)5K$0
Dec 26, 2025Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)39K$0
Dec 24, 2025Kooij Louise FrederikaChief Accounting OfficerSell(S)26K$35.68$928K
Dec 24, 2025Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)26K$10.00$260K
Dec 24, 2025Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)26K$0
Dec 23, 2025Kooij Louise FrederikaChief Accounting OfficerSell(S)75K$36.21$2.7M
Dec 23, 2025Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)75K$10.00$751K
Dec 23, 2025Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)75K$0
Sep 15, 2025Topper James NDirectorBuy(P)660$23.70$16K
Sep 9, 2025Kooij Louise FrederikaChief Accounting OfficerSell(S)97K$26.11$2.5M
Sep 9, 2025Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)150K$10.00$1.5M
Sep 9, 2025Kooij Louise FrederikaChief Accounting OfficerSell(S)53K$25.31$1.3M
Sep 9, 2025Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)150K$0
Sep 8, 2025Topper James NDirectorBuy(P)1K$24.99$31K
Sep 3, 2025Kooij Louise FrederikaChief Accounting OfficerSell(S)18K$25.09$453K
Sep 2, 2025Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)18K
Sep 2, 2025Kooij Louise FrederikaChief Accounting OfficerOption exercise(M)18K$0
Aug 25, 2025Kooij Louise FrederikaChief Accounting OfficerSell(S)8K$24.86$206K

Data Source

Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.

Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).