InsiderTrades.com logo

NAMS Insider Trading

Insider Ownership Percentage: 20.84%
Insider Buying (Last 12 Months): $320,789.33
Insider Selling (Last 12 Months): $58,221,922.80

NewAmsterdam Pharma Insider Trading History Chart

This chart shows the insider buying and selling history at NewAmsterdam Pharma by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

NewAmsterdam Pharma Share Price & Price History

Current Price: $30.01
Price Change: ▲ Price Increase of +1.07 (3.70%)
As of 03/23/2026 05:00 PM ET

This chart shows the closing price history over time for NAMS up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

NewAmsterdam Pharma Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
3/11/2026Louis G LangeDirectorSell44,619$30.42$1,357,309.9810,360View SEC Filing Icon  
3/9/2026Johannes Jacob Piete KasteleinInsiderSell101,409$30.29$3,071,678.6169,302View SEC Filing Icon  
3/6/2026Johannes Jacob Piete KasteleinInsiderSell94,124$30.32$2,853,839.6869,302View SEC Filing Icon  
3/6/2026Louis G LangeDirectorSell28,186$29.41$828,950.26View SEC Filing Icon  
3/5/2026Johannes Jacob Piete KasteleinInsiderSell104,467$30.30$3,165,350.1069,302View SEC Filing Icon  
3/2/2026Michael H DavidsonCEOSell443,707$33.25$14,753,257.75174,144View SEC Filing Icon  
2/26/2026Michael H DavidsonCEOSell183,332$33.71$6,180,121.72174,144View SEC Filing Icon  
2/25/2026Michael H DavidsonCEOSell58,253$35.30$2,056,330.90459,859View SEC Filing Icon  
2/24/2026Michael H DavidsonCEOSell64,708$36.15$2,339,194.20459,859View SEC Filing Icon  
2/20/2026Johannes Jacob Piete KasteleinInsiderSell45,481$35.31$1,605,934.1153,500View SEC Filing Icon  
1/28/2026Louise Frederika KooijCAOSell32,612$31.80$1,037,061.6024,353View SEC Filing Icon  
1/27/2026Louise Frederika KooijCAOSell39,816$32.62$1,298,797.9224,353View SEC Filing Icon  
1/26/2026Louise Frederika KooijCAOSell34,400$32.78$1,127,632.0024,353View SEC Filing Icon  
1/23/2026Louise Frederika KooijCAOSell38,172$33.75$1,288,305.0024,353View SEC Filing Icon  
1/5/2026Johannes Jacob Piete KasteleinInsiderSell6,000$33.25$199,500.0073,481View SEC Filing Icon  
1/5/2026Louise Frederika KooijCAOSell2,647$33.25$88,012.7512,353View SEC Filing Icon  
12/26/2025Louise Frederika KooijCAOSell43,872$35.30$1,548,681.6015,000View SEC Filing Icon  
12/24/2025Louise Frederika KooijCAOSell26,011$35.68$928,072.4815,000View SEC Filing Icon  
12/23/2025Louise Frederika KooijCAOSell75,117$36.21$2,719,986.5715,000View SEC Filing Icon  
9/15/2025James N. TopperDirectorBuy660$23.70$15,642.003,028,524View SEC Filing Icon  
9/9/2025Louise Frederika KooijCAOSell150,000$25.83$3,874,500.0015,000View SEC Filing Icon  
9/8/2025James N. TopperDirectorBuy1,260$24.99$31,487.403,027,864View SEC Filing Icon  
9/3/2025Louise Frederika KooijCAOSell18,073$25.09$453,451.5715,000View SEC Filing Icon  
8/25/2025Louise Frederika KooijCAOSell8,269$24.86$205,567.3415,000View SEC Filing Icon  
8/21/2025Johannes Jacob Piete KasteleinInsiderSell50,000$24.29$1,214,500.00119,302View SEC Filing Icon  
8/11/2025James N. TopperDirectorBuy471$23.98$11,294.583,026,604View SEC Filing Icon  
7/16/2025Douglas F. KlingCOOSell51,043$21.10$1,077,007.3044,000View SEC Filing Icon  
7/15/2025Douglas F. KlingCOOSell47,569$21.44$1,019,879.3644,000View SEC Filing Icon  
6/25/2025James N. TopperDirectorBuy1,260$18.26$23,007.603,026,133View SEC Filing Icon  
6/24/2025James N. TopperDirectorBuy2,520$18.43$46,443.603,024,873View SEC Filing Icon  
6/16/2025Douglas F. KlingCOOSell100,000$19.29$1,929,000.0044,000View SEC Filing Icon  
6/16/2025James N. TopperDirectorBuy8,584$19.50$167,388.003,022,153View SEC Filing Icon  
3/26/2025James N. TopperDirectorBuy1,135$22.49$25,526.153,013,569View SEC Filing Icon  
3/4/2025James N. TopperDirectorBuy4,005$21.02$84,185.103,012,434View SEC Filing Icon  
3/4/2025Louise Frederika KooijCAOSell150,000$20.37$3,055,500.0015,000View SEC Filing Icon  
12/30/2024Nap B.V. ForgrowthMajor ShareholderSell29,846$25.54$762,266.8410,656,172View SEC Filing Icon  
12/26/2024Nap B.V. ForgrowthMajor ShareholderSell33,438$26.01$869,722.3810,727,490View SEC Filing Icon  
12/23/2024Nap B.V. ForgrowthMajor ShareholderSell25,132$25.49$640,614.6810,777,092View SEC Filing Icon  
12/20/2024Nap B.V. ForgrowthMajor ShareholderSell49,772$25.60$1,274,163.2010,802,224View SEC Filing Icon  
12/18/2024Nap B.V. ForgrowthMajor ShareholderSell100,728$26.10$2,629,000.8010,908,502View SEC Filing Icon  
12/12/2024Nap B.V. ForgrowthMajor ShareholderSell166,011$25.39$4,215,019.2911,150,461View SEC Filing Icon  
11/18/2024Nap B.V. ForgrowthMajor ShareholderSell33,273$25.08$834,486.8411,778,760View SEC Filing Icon  
11/15/2024Nap B.V. ForgrowthMajor ShareholderSell8,530$25.02$213,420.6011,812,033View SEC Filing Icon  
10/1/2024Louise Frederika KooijCAOSell45,000$15.72$707,400.00View SEC Filing Icon  
9/26/2024Juliette Berangere AudetInsiderBuy1,104$15.70$17,332.801,104View SEC Filing Icon  
6/20/2024Michael H DavidsonCEOBuy5,000$17.26$86,300.00204,784View SEC Filing Icon  
3/26/2024James N. TopperDirectorBuy8,429$21.50$181,223.503,008,429View SEC Filing Icon  
3/26/2024Johannes Jacob Piete KasteleinInsiderSell190,476$21.50$4,095,234.00View SEC Filing Icon  
2/13/2024Louis G LangeDirectorBuy5,000$19.00$95,000.0024,878View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for NewAmsterdam Pharma (NASDAQ:NAMS)

89.89% of NewAmsterdam Pharma stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at NAMS by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

NewAmsterdam Pharma Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
2/26/2026Seven Fleet Capital Management LP4,000$0.14M0.1%N/A0.004%Search for SEC Filing on Google Icon
2/19/2026Invesco Ltd.5,961$0.21M0.0%-94.3%0.005%Search for SEC Filing on Google Icon
2/18/2026Empowered Funds LLC2,428$85K0.0%N/A0.002%Search for SEC Filing on Google Icon
2/18/2026XTX Topco Ltd137,492$4.82M0.1%+1,714.1%0.121%Search for SEC Filing on Google Icon
2/18/2026Ikarian Capital LLC45,830$1.61M0.1%-57.1%0.040%Search for SEC Filing on Google Icon
2/18/2026Virtus Investment Advisers LLC7,142$0.25M0.1%+32.0%0.006%Search for SEC Filing on Google Icon
2/18/2026Twinbeech Capital LP27,400$0.96M0.1%N/A0.024%Search for SEC Filing on Google Icon
2/18/2026Millennium Management LLC254,596$8.93M0.0%N/A0.225%Search for SEC Filing on Google Icon
2/18/2026Ishara Investments LP30,000$1.05M1.2%N/A0.026%Search for SEC Filing on Google Icon
2/18/2026Janus Henderson Group PLC2,341,723$82.30M0.0%+10.6%2.065%Search for SEC Filing on Google Icon
2/18/2026Eversept Partners LP420,827$14.76M0.7%-13.9%0.371%Search for SEC Filing on Google Icon
2/18/2026Castle Hook Partners LP1,085,008$38.06M0.2%N/A0.957%Search for SEC Filing on Google Icon
2/18/2026Cormorant Asset Management LP1,000,000$35.08M1.6%-54.0%0.882%Search for SEC Filing on Google Icon
2/18/2026Artia Global Partners LP503,936$17.68M2.4%+158.6%0.444%Search for SEC Filing on Google Icon
2/18/2026Boothbay Fund Management LLC33,919$1.19M0.0%-16.7%0.030%Search for SEC Filing on Google Icon
2/17/2026Guggenheim Capital LLC6,388$0.22M0.0%N/A0.006%Search for SEC Filing on Google Icon
2/17/2026Logos Global Management LP450,000$15.79M1.0%N/A0.397%Search for SEC Filing on Google Icon
2/17/2026Viking Global Investors LP4,203,567$147.46M0.4%-35.1%3.707%Search for SEC Filing on Google Icon
2/17/2026ADAR1 Capital Management LLC118,623$4.16M0.3%+3.7%0.105%Search for SEC Filing on Google Icon
2/17/2026Jain Global LLC47,584$1.67M0.0%N/A0.042%Search for SEC Filing on Google Icon
2/17/2026RA Capital Management L.P.9,550,191$335.02M3.4%-5.8%8.422%Search for SEC Filing on Google Icon
2/17/2026Bain Capital Life Sciences Investors LLC7,306,566$256.31M19.6%-31.8%6.444%Search for SEC Filing on Google Icon
2/17/2026ArrowMark Colorado Holdings LLC298,077$10.46M0.2%-4.2%0.263%Search for SEC Filing on Google Icon
2/17/2026Price T Rowe Associates Inc. MD116,258$4.08M0.0%-16.0%0.103%Search for SEC Filing on Google Icon
2/17/2026Adage Capital Partners GP L.L.C.1,406,631$49.35M0.1%-45.4%1.241%Search for SEC Filing on Google Icon
2/17/2026California State Teachers Retirement System40,276$1.41M0.0%-15.8%0.036%Search for SEC Filing on Google Icon
2/17/2026Russell Investments Group Ltd.71,282$2.50M0.0%N/A0.063%Search for SEC Filing on Google Icon
2/17/2026Fcpm Iii Services B.V.9,198,900$322.70M42.8%-0.1%8.113%Search for SEC Filing on Google Icon
2/17/2026State of Wisconsin Investment Board19,997$0.70M0.0%N/A0.018%Search for SEC Filing on Google Icon
2/17/2026Fred Alger Management LLC47,535$1.67M0.0%+15.2%0.042%Search for SEC Filing on Google Icon
2/17/2026Royal Bank of Canada24,084$0.85M0.0%-9.1%0.021%Search for SEC Filing on Google Icon
2/17/2026Persistent Asset Partners Ltd3,948$0.14M0.1%N/A0.003%Search for SEC Filing on Google Icon
2/17/2026Polar Capital Holdings Plc2,776,222$97.39M0.4%-4.7%2.448%Search for SEC Filing on Google Icon
2/16/2026Squarepoint Ops LLC30,819$1.08M0.0%+47.0%0.027%Search for SEC Filing on Google Icon
2/16/2026Verition Fund Management LLC32,391$1.14M0.0%+134.2%0.029%Search for SEC Filing on Google Icon
2/16/2026PEAK6 LLC20,749$0.73M0.0%N/A0.018%Search for SEC Filing on Google Icon
2/16/2026Nicholas Investment Partners LP213,419$7.49M0.5%+20.2%0.188%Search for SEC Filing on Google Icon
2/16/2026First Turn Management LLC893,473$31.34M3.6%+24.6%0.788%Search for SEC Filing on Google Icon
2/16/2026Frazier Life Sciences Management L.P.16,943,774$594.39M16.0%+1.4%14.943%Search for SEC Filing on Google Icon
2/16/2026Kennedy Capital Management LLC172,931$6.07M0.1%+17.9%0.153%Search for SEC Filing on Google Icon
2/13/2026Maverick Capital Ltd.1,894,226$66.45M0.7%+25.9%1.671%Search for SEC Filing on Google Icon
2/13/2026Walleye Capital LLC96,261$3.38M0.0%N/A0.085%Search for SEC Filing on Google Icon
2/13/2026Quarry LP3,000$0.11M0.0%-56.4%0.003%Search for SEC Filing on Google Icon
2/13/2026First Trust Advisors LP279,701$9.81M0.0%N/A0.247%Search for SEC Filing on Google Icon
2/13/2026State Street Corp68,523$2.40M0.0%+7.4%0.060%Search for SEC Filing on Google Icon
2/13/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC265,199$9.30M0.0%N/A0.234%Search for SEC Filing on Google Icon
2/13/2026Wells Fargo & Company MN900$32K0.0%+50.0%0.001%Search for SEC Filing on Google Icon
2/13/2026Lord Abbett & CO. LLC200,638$7.04M0.0%N/A0.177%Search for SEC Filing on Google Icon
2/12/2026Orion Porfolio Solutions LLC6,545$0.23M0.0%N/A0.006%Search for SEC Filing on Google Icon
2/12/2026Decheng Capital LLC592,057$20.77M2.8%-9.9%0.522%Search for SEC Filing on Google Icon
2/12/2026Ensign Peak Advisors Inc549,511$19.28M0.0%N/A0.485%Search for SEC Filing on Google Icon
2/12/2026AlphaCentric Advisors LLC13,731$0.48M0.5%N/A0.012%Search for SEC Filing on Google Icon
2/12/2026CIBC Private Wealth Group LLC7,240$0.25M0.0%-5.2%0.006%Search for SEC Filing on Google Icon
2/12/2026Alps Advisors Inc.92,902$3.26M0.0%N/A0.082%Search for SEC Filing on Google Icon
2/12/2026Swiss National Bank88,900$3.12M0.0%+2.1%0.078%Search for SEC Filing on Google Icon
2/12/2026Polen Capital Management LLC11,239$0.39M0.0%N/A0.010%Search for SEC Filing on Google Icon
2/11/2026Empowered Funds LLC2,428$85K0.0%N/A0.002%Search for SEC Filing on Google Icon
2/11/2026DCF Advisers LLC160,600$5.63M1.5%-8.4%0.142%Search for SEC Filing on Google Icon
2/11/2026Deutsche Bank AG123,963$4.35M0.0%+81.2%0.109%Search for SEC Filing on Google Icon
2/11/2026Fox Run Management L.L.C.9,798$0.34M0.1%N/A0.009%Search for SEC Filing on Google Icon
2/11/2026Franklin Resources Inc.769,120$26.98M0.0%+89.5%0.678%Search for SEC Filing on Google Icon
2/11/2026CenterBook Partners LP12,060$0.42M0.0%-82.9%0.011%Search for SEC Filing on Google Icon
2/11/2026JPMorgan Chase & Co.999,976$35.08M0.0%-23.2%0.882%Search for SEC Filing on Google Icon
2/11/2026Capital World Investors9,984,000$350.24M0.0%+1.6%8.805%Search for SEC Filing on Google Icon
2/11/2026WINTON GROUP Ltd28,665$1.01M0.0%N/A0.025%Search for SEC Filing on Google Icon
2/10/2026TD Asset Management Inc13,180$0.46M0.0%-26.8%0.012%Search for SEC Filing on Google Icon
2/10/2026Goldman Sachs Group Inc.1,725,662$60.54M0.0%+96.0%1.522%Search for SEC Filing on Google Icon
2/10/2026JTC Employer Solutions Trustee Ltd75,500$2.65M0.2%N/A0.067%Search for SEC Filing on Google Icon
2/10/2026SBI Okasan Asset Management Co.Ltd.14,900$0.52M0.0%N/A0.013%Search for SEC Filing on Google Icon
2/9/2026Geode Capital Management LLC102,395$3.59M0.0%+0.4%0.090%Search for SEC Filing on Google Icon
2/9/2026Knights of Columbus Asset Advisors LLC32,483$1.14M0.1%-3.4%0.029%Search for SEC Filing on Google Icon
2/9/2026Swedbank AB90,900$3.19M0.0%N/A0.080%Search for SEC Filing on Google Icon
2/9/2026Lisanti Capital Growth LLC179,410$6.29M1.5%+278.1%0.158%Search for SEC Filing on Google Icon
2/6/2026Legato Capital Management LLC83,833$2.94M0.3%+258.7%0.074%Search for SEC Filing on Google Icon
2/6/2026Mizuho Markets Cayman LP47,879$1.68M0.1%N/A0.042%Search for SEC Filing on Google Icon
2/6/2026PSP Research LLC14,920$0.52M0.5%N/A0.013%Search for SEC Filing on Google Icon
2/6/2026Atle Fund Management AB197,036$6.91M2.2%+1.8%0.174%Search for SEC Filing on Google Icon
2/6/2026Handelsbanken Fonder AB415,800$14.59M0.0%+2.5%0.367%Search for SEC Filing on Google Icon
2/6/2026TimesSquare Capital Management LLC822,300$28.85M0.4%-1.8%0.725%Search for SEC Filing on Google Icon
2/5/2026DNB Asset Management AS20,119$0.71M0.0%N/A0.018%Search for SEC Filing on Google Icon
2/5/2026Navalign LLC1,315$46K0.0%N/A0.001%Search for SEC Filing on Google Icon
2/4/2026VIRGINIA RETIREMENT SYSTEMS ET Al7,200$0.25M0.0%N/A0.006%Search for SEC Filing on Google Icon
2/3/2026Swedbank AB90,900$3.19M0.0%N/A0.080%Search for SEC Filing on Google Icon
2/2/2026Wolverine Asset Management LLC2,012$71K0.0%-17.2%0.002%Search for SEC Filing on Google Icon
1/30/2026Jennison Associates LLC3,489,221$122.40M0.1%-16.9%3.077%Search for SEC Filing on Google Icon
1/30/2026State of New Jersey Common Pension Fund D15,377$0.54M0.0%N/A0.014%Search for SEC Filing on Google Icon
1/30/2026Moody Aldrich Partners LLC143,549$5.04M0.9%N/A0.127%Search for SEC Filing on Google Icon
1/30/2026Keybank National Association OH13,099$0.46M0.0%-18.2%0.012%Search for SEC Filing on Google Icon
1/29/2026Pictet Asset Management Holding SA746,122$26.17M0.0%-42.3%0.658%Search for SEC Filing on Google Icon
1/29/2026Simon Quick Advisors LLC5,763$0.20M0.0%N/A0.005%Search for SEC Filing on Google Icon
1/29/2026UBS Group AG899,442$31.55M0.0%+17.0%0.793%Search for SEC Filing on Google Icon
1/29/2026China Universal Asset Management Co. Ltd.26,477$0.93M0.1%+34.1%0.023%Search for SEC Filing on Google Icon
1/29/2026NBC Securities Inc.2,457$86K0.0%N/A0.002%Search for SEC Filing on Google Icon
1/28/2026Arizona State Retirement System12,733$0.45M0.0%-3.9%0.011%Search for SEC Filing on Google Icon
1/27/2026Zurcher Kantonalbank Zurich Cantonalbank 19,804$0.70M0.0%+167.5%0.017%Search for SEC Filing on Google Icon
1/26/2026Mirae Asset Global Investments Co. Ltd.5,510$0.19M0.0%+26.6%0.005%Search for SEC Filing on Google Icon
1/23/2026Farther Finance Advisors LLC724$25K0.0%+4,425.0%0.001%Search for SEC Filing on Google Icon
1/16/2026Aberdeen Group plc729,484$25.59M0.0%+10.2%0.643%Search for SEC Filing on Google Icon
1/15/2026Jaffetilchin Investment Partners LLC9,218$0.32M0.0%N/A0.008%Search for SEC Filing on Google Icon
1/12/2026Avanza Fonder AB6,566$0.23M0.0%-12.5%0.006%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
NewAmsterdam Pharma logo
NewAmsterdam Pharma Company N.V., a late-stage biopharmaceutical company, develops therapies to enhance patient care in populations with metabolic disease. It is developing obicetrapib, an oral low-dose cholesteryl ester transfer protein (CETP) inhibitor, that is in various clinical trials as a monotherapy and a combination therapy with ezetimibe for lowering LDL-C for cardiovascular diseases. The company also develops Obicetrapib which is in Phase 2a clinical trial for Alzheimer's disease. NewAmsterdam Pharma Company N.V. is headquartered in Naarden, the Netherlands.
Read More on NewAmsterdam Pharma

Today's Range

Now: $30.01
Low: $28.81
High: $30.53

50 Day Range

MA: $32.57
Low: $28.62
High: $36.17

52 Week Range

Now: $30.01
Low: $14.06
High: $42.00

Volume

789,910 shs

Average Volume

951,475 shs

Market Capitalization

$3.45 billion

P/E Ratio

N/A

Dividend Yield

N/A

Beta

0.04

Who are the company insiders with the largest holdings of NewAmsterdam Pharma?

NewAmsterdam Pharma's top insider shareholders include:
  1. Nap BV Forgrowth (Major Shareholder)
  2. James N Topper (Director)
  3. Michael H Davidson (CEO)
  4. Johannes Jacob Piete Kastelein (Insider)
  5. Douglas F Kling (COO)
  6. Louise Frederika Kooij (CAO)
  7. Louis G Lange (Director)
  8. Juliette Berangere Audet (Insider)
Learn More about top insider investors at NewAmsterdam Pharma.

Who are the major institutional investors of NewAmsterdam Pharma?

NewAmsterdam Pharma's top institutional shareholders include:
  1. Frazier Life Sciences Management L.P. — 14.94%
  2. Capital World Investors — 8.81%
  3. RA Capital Management L.P. — 8.42%
  4. Fcpm Iii Services B.V. — 8.11%
  5. Bain Capital Life Sciences Investors LLC — 6.44%
  6. Viking Global Investors LP — 3.71%
Learn More about top institutional investors of NewAmsterdam Pharma stock.

Which institutional investors are selling NewAmsterdam Pharma stock?

In the previous quarter, NAMS stock was sold by these institutional investors:
  1. Bain Capital Life Sciences Investors LLC
  2. Viking Global Investors LP
  3. Cormorant Asset Management LP
  4. Adage Capital Partners GP L.L.C.
  5. Caption Management LLC
  6. Integral Health Asset Management LLC
  7. Jennison Associates LLC
  8. RA Capital Management L.P.
In the last year, company insiders that have sold NewAmsterdam Pharma company stock include:
  1. Nap BV Forgrowth (Major Shareholder)
  2. James N Topper (Director)
  3. Michael H Davidson (CEO)
  4. Johannes Jacob Piete Kastelein (Insider)
  5. Douglas F Kling (COO)
Learn More investors selling NewAmsterdam Pharma stock.

Which institutional investors are buying NewAmsterdam Pharma stock?

Within the previous quarter, NAMS stock was bought by institutional investors including:
  1. Castle Hook Partners LP
  2. Goldman Sachs Group Inc.
  3. Ensign Peak Advisors Inc
  4. Logos Global Management LP
  5. Maverick Capital Ltd.
  6. Franklin Resources Inc.
  7. Artia Global Partners LP
  8. First Trust Advisors LP
Within the last year, these company insiders have bought NewAmsterdam Pharma stock:
  1. Nap BV Forgrowth (Major Shareholder)
  2. James N Topper (Director)
  3. Michael H Davidson (CEO)
Learn More investors buying NewAmsterdam Pharma stock.