NAMS Insider Trading

Insider Trading Chart
Insider Trading History
Frequently Asked Questions
About

Insider Ownership Percentage: 20.84%

Insider Buying (Last 12 Months): $404,974.43

Insider Selling (Last 12 Months): $23,065,455.49

NewAmsterdam Pharma Insider Trading History Chart

NewAmsterdam Pharma Share Price & Price History

^$34.30

▲ +2.24 (6.99%)

As of 02/6/2026 05:00 PM ET

Days: 30 | 90 | 365

NewAmsterdam Pharma Insider Trading History

Transaction Date	Insider Name	Title	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction
1/28/2026	Louise Frederika Kooij	CAO	Sell	32,612	$31.80	$1,037,061.60	24,353
1/27/2026	Louise Frederika Kooij	CAO	Sell	39,816	$32.62	$1,298,797.92	24,353
1/26/2026	Louise Frederika Kooij	CAO	Sell	34,400	$32.78	$1,127,632.00	24,353
1/23/2026	Louise Frederika Kooij	CAO	Sell	38,172	$33.75	$1,288,305.00	24,353
1/5/2026	Johannes Jacob Piete Kastelein	Insider	Sell	6,000	$33.25	$199,500.00	73,481
1/5/2026	Louise Frederika Kooij	CAO	Sell	2,647	$33.25	$88,012.75	12,353
12/26/2025	Louise Frederika Kooij	CAO	Sell	43,872	$35.30	$1,548,681.60	15,000
12/24/2025	Louise Frederika Kooij	CAO	Sell	26,011	$35.68	$928,072.48	15,000
12/23/2025	Louise Frederika Kooij	CAO	Sell	75,117	$36.21	$2,719,986.57	15,000
9/15/2025	James N. Topper	Director	Buy	660	$23.70	$15,642.00	3,028,524
9/9/2025	Louise Frederika Kooij	CAO	Sell	150,000	$25.83	$3,874,500.00	15,000
9/8/2025	James N. Topper	Director	Buy	1,260	$24.99	$31,487.40	3,027,864
9/3/2025	Louise Frederika Kooij	CAO	Sell	18,073	$25.09	$453,451.57	15,000
8/25/2025	Louise Frederika Kooij	CAO	Sell	8,269	$24.86	$205,567.34	15,000
8/21/2025	Johannes Jacob Piete Kastelein	Insider	Sell	50,000	$24.29	$1,214,500.00	119,302
8/11/2025	James N. Topper	Director	Buy	471	$23.98	$11,294.58	3,026,604
7/16/2025	Douglas F. Kling	COO	Sell	51,043	$21.10	$1,077,007.30	44,000
7/15/2025	Douglas F. Kling	COO	Sell	47,569	$21.44	$1,019,879.36	44,000
6/25/2025	James N. Topper	Director	Buy	1,260	$18.26	$23,007.60	3,026,133
6/24/2025	James N. Topper	Director	Buy	2,520	$18.43	$46,443.60	3,024,873
6/16/2025	Douglas F. Kling	COO	Sell	100,000	$19.29	$1,929,000.00	44,000
6/16/2025	James N. Topper	Director	Buy	8,584	$19.50	$167,388.00	3,022,153
3/26/2025	James N. Topper	Director	Buy	1,135	$22.49	$25,526.15	3,013,569
3/4/2025	James N. Topper	Director	Buy	4,005	$21.02	$84,185.10	3,012,434
3/4/2025	Louise Frederika Kooij	CAO	Sell	150,000	$20.37	$3,055,500.00	15,000
12/30/2024	Nap B.V. Forgrowth	Major Shareholder	Sell	29,846	$25.54	$762,266.84	10,656,172
12/26/2024	Nap B.V. Forgrowth	Major Shareholder	Sell	33,438	$26.01	$869,722.38	10,727,490
12/23/2024	Nap B.V. Forgrowth	Major Shareholder	Sell	25,132	$25.49	$640,614.68	10,777,092
12/20/2024	Nap B.V. Forgrowth	Major Shareholder	Sell	49,772	$25.60	$1,274,163.20	10,802,224
12/18/2024	Nap B.V. Forgrowth	Major Shareholder	Sell	100,728	$26.10	$2,629,000.80	10,908,502
12/12/2024	Nap B.V. Forgrowth	Major Shareholder	Sell	166,011	$25.39	$4,215,019.29	11,150,461
11/18/2024	Nap B.V. Forgrowth	Major Shareholder	Sell	33,273	$25.08	$834,486.84	11,778,760
11/15/2024	Nap B.V. Forgrowth	Major Shareholder	Sell	8,530	$25.02	$213,420.60	11,812,033
10/1/2024	Louise Frederika Kooij	CAO	Sell	45,000	$15.72	$707,400.00
9/26/2024	Juliette Berangere Audet	Insider	Buy	1,104	$15.70	$17,332.80	1,104
6/20/2024	Michael H Davidson	CEO	Buy	5,000	$17.26	$86,300.00	204,784
3/26/2024	James N. Topper	Director	Buy	8,429	$21.50	$181,223.50	3,008,429
3/26/2024	Johannes Jacob Piete Kastelein	Insider	Sell	190,476	$21.50	$4,095,234.00
2/13/2024	Louis G Lange	Director	Buy	5,000	$19.00	$95,000.00	24,878

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

NewAmsterdam Pharma Institutional Trading History

Reporting Date	Hedge Fund	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
2/6/2026	Legato Capital Management LLC	83,833	$2.94M	0.3%	+258.7%	0.074%
2/6/2026	Mizuho Markets Cayman LP	47,879	$1.68M	0.1%	N/A	0.042%
2/6/2026	PSP Research LLC	14,920	$0.52M	0.5%	N/A	0.013%
2/6/2026	Atle Fund Management AB	197,036	$6.91M	2.2%	+1.8%	0.174%
2/6/2026	Handelsbanken Fonder AB	415,800	$14.59M	0.0%	+2.5%	0.367%
2/6/2026	TimesSquare Capital Management LLC	822,300	$28.85M	0.4%	-1.8%	0.725%
2/5/2026	DNB Asset Management AS	20,119	$0.71M	0.0%	N/A	0.018%
2/5/2026	Navalign LLC	1,315	$46K	0.0%	N/A	0.001%
2/4/2026	VIRGINIA RETIREMENT SYSTEMS ET Al	7,200	$0.25M	0.0%	N/A	0.006%
2/3/2026	Swedbank AB	90,900	$3.19M	0.0%	N/A	0.080%
2/2/2026	Wolverine Asset Management LLC	2,012	$71K	0.0%	-17.2%	0.002%
1/30/2026	Jennison Associates LLC	3,489,221	$122.40M	0.1%	-16.9%	3.077%
1/30/2026	State of New Jersey Common Pension Fund D	15,377	$0.54M	0.0%	N/A	0.014%
1/30/2026	Moody Aldrich Partners LLC	143,549	$5.04M	0.9%	N/A	0.127%
1/30/2026	Keybank National Association OH	13,099	$0.46M	0.0%	-18.2%	0.012%
1/29/2026	Pictet Asset Management Holding SA	746,122	$26.17M	0.0%	-42.3%	0.658%
1/29/2026	Simon Quick Advisors LLC	5,763	$0.20M	0.0%	N/A	0.005%
1/29/2026	UBS Group AG	899,442	$31.55M	0.0%	+17.0%	0.793%
1/29/2026	China Universal Asset Management Co. Ltd.	26,477	$0.93M	0.1%	+34.1%	0.023%
1/29/2026	NBC Securities Inc.	2,457	$86K	0.0%	N/A	0.002%
1/28/2026	Arizona State Retirement System	12,733	$0.45M	0.0%	-3.9%	0.011%
1/27/2026	Zurcher Kantonalbank Zurich Cantonalbank	19,804	$0.70M	0.0%	+167.5%	0.017%
1/26/2026	Mirae Asset Global Investments Co. Ltd.	5,510	$0.19M	0.0%	+26.6%	0.005%
1/23/2026	Farther Finance Advisors LLC	724	$25K	0.0%	+4,425.0%	0.001%
1/16/2026	Aberdeen Group plc	729,484	$25.59M	0.0%	+10.2%	0.643%
1/15/2026	Jaffetilchin Investment Partners LLC	9,218	$0.32M	0.0%	N/A	0.008%
1/12/2026	Avanza Fonder AB	6,566	$0.23M	0.0%	-12.5%	0.006%
1/1/2026	JPMorgan Chase & Co.	1,302,498	$37.04M	0.0%	-10.7%	1.149%
11/21/2025	CIBC Bancorp USA Inc.	31,140	$0.89M	0.0%	N/A	0.027%
11/17/2025	Woodline Partners LP	1,157,867	$32.93M	0.2%	-39.0%	1.021%
11/17/2025	Polar Capital Holdings Plc	2,911,634	$82.81M	0.4%	+15.6%	2.568%
11/17/2025	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	25,936	$0.74M	0.0%	-17.4%	0.023%
11/17/2025	HighVista Strategies LLC	31,831	$0.91M	0.2%	+65.1%	0.028%
11/17/2025	Fcpm Iii Services B.V.	9,212,384	$262M	52.6%	-13.4%	8.124%
11/17/2025	Fred Alger Management LLC	41,264	$1.17M	0.0%	+87.2%	0.036%
11/17/2025	Decheng Capital LLC	657,051	$18.69M	3.3%	-14.7%	0.579%
11/17/2025	Bank of America Corp DE	472,100	$13.43M	0.0%	-2.5%	0.416%
11/17/2025	Boothbay Fund Management LLC	40,714	$1.16M	0.0%	-32.2%	0.036%
11/17/2025	ArrowMark Colorado Holdings LLC	310,999	$8.85M	0.2%	-13.3%	0.274%
11/17/2025	Alliancebernstein L.P.	2,141,778	$60.91M	0.0%	-8.1%	1.889%
11/17/2025	Ameriprise Financial Inc.	145,327	$4.13M	0.0%	-30.2%	0.128%
11/14/2025	Viking Global Investors LP	6,475,534	$184.16M	0.5%	-7.2%	5.711%
11/14/2025	Bellevue Group AG	14,611	$0.42M	0.0%	-28.9%	0.013%
11/14/2025	Deerfield Management Company L.P.	4,266,693	$121.35M	1.9%	-16.6%	3.788%
11/14/2025	Duquesne Family Office LLC	1,923,700	$54.71M	1.3%	+131.2%	1.708%
11/14/2025	ADAR1 Capital Management LLC	114,359	$3.25M	0.3%	+1.8%	0.102%
11/14/2025	Squarepoint Ops LLC	20,959	$0.60M	0.0%	+46.8%	0.019%
11/14/2025	Wellington Management Group LLP	4,020,126	$114.33M	0.0%	+21.0%	3.569%
11/13/2025	Kennedy Capital Management LLC	146,715	$4.17M	0.1%	+972.9%	0.130%
11/13/2025	UBS Group AG	768,520	$21.86M	0.0%	+22.4%	0.682%
11/13/2025	BNP Paribas Financial Markets	27,328	$0.78M	0.0%	-6.7%	0.024%
11/13/2025	Franklin Resources Inc.	405,825	$11.54M	0.0%	+21.4%	0.360%
11/13/2025	Capital World Investors	9,822,711	$279.36M	0.0%	+17.1%	8.721%
11/13/2025	Legal & General Group Plc	45,738	$1.30M	0.0%	+3.4%	0.041%
11/13/2025	Swiss National Bank	87,100	$2.48M	0.0%	+3.8%	0.077%
11/13/2025	Jefferies Financial Group Inc.	12,000	$0.34M	0.0%	N/A	0.011%
11/12/2025	DCF Advisers LLC	175,250	$4.98M	1.6%	+1.6%	0.156%
11/12/2025	Legato Capital Management LLC	23,370	$0.67M	0.1%	+24.4%	0.021%
11/12/2025	American Century Companies Inc.	624,285	$17.76M	0.0%	+17.1%	0.554%
11/12/2025	Handelsbanken Fonder AB	405,800	$11.54M	0.0%	+18.8%	0.360%
11/12/2025	Mesirow Financial Investment Management Inc.	8,215	$0.23M	0.0%	N/A	0.007%
11/10/2025	TD Asset Management Inc	18,000	$0.51M	0.0%	N/A	0.016%
11/10/2025	China Universal Asset Management Co. Ltd.	19,742	$0.56M	0.0%	-12.4%	0.018%
11/7/2025	CenterBook Partners LP	70,613	$2.01M	0.1%	+3.6%	0.063%
11/7/2025	Readystate Asset Management LP	34,353	$0.98M	0.0%	-85.1%	0.031%
11/7/2025	Vanguard Group Inc.	172,466	$4.91M	0.0%	-3.6%	0.153%
11/7/2025	JPMorgan Chase & Co.	1,302,498	$37.04M	0.0%	-10.7%	1.156%
11/7/2025	PNC Financial Services Group Inc.	3,616	$0.10M	0.0%	-21.3%	0.003%
11/7/2025	TimesSquare Capital Management LLC	837,368	$23.82M	0.3%	-4.0%	0.743%
11/7/2025	Aberdeen Group plc	661,946	$18.83M	0.0%	-9.9%	0.588%
11/4/2025	Marshall Financial Group Inc. ADV	7,500	$0.21M	0.1%	N/A	0.007%
11/4/2025	Atle Fund Management AB	193,625	$5.51M	2.2%	+23.2%	0.172%
11/4/2025	Keybank National Association OH	16,014	$0.46M	0.0%	N/A	0.014%
11/4/2025	Lisanti Capital Growth LLC	47,445	$1.35M	0.3%	-3.4%	0.042%
11/3/2025	Arizona State Retirement System	13,251	$0.38M	0.0%	+3.8%	0.012%
11/3/2025	Knights of Columbus Asset Advisors LLC	33,610	$0.96M	0.1%	+2.4%	0.030%
11/3/2025	New York State Common Retirement Fund	26,680	$0.76M	0.0%	N/A	0.024%
10/30/2025	Jennison Associates LLC	4,198,554	$119.41M	0.1%	+42.5%	3.728%
10/28/2025	Wolverine Asset Management LLC	2,429	$69K	0.0%	N/A	0.002%
10/21/2025	Mather Group LLC.	1,000	$28K	0.0%	N/A	0.001%
10/9/2025	Voya Investment Management LLC	19,300	$0.55M	0.0%	N/A	0.017%
10/7/2025	Thurston Springer Miller Herd & Titak Inc.	1,067	$30K	0.1%	N/A	0.001%
8/28/2025	China Universal Asset Management Co. Ltd.	22,549	$0.41M	0.0%	+2.4%	0.020%
8/15/2025	Duquesne Family Office LLC	832,175	$15.07M	0.4%	+4.0%	0.741%
8/15/2025	Exome Asset Management LLC	36,574	$0.66M	0.4%	N/A	0.033%
8/15/2025	Frazier Life Sciences Management L.P.	16,607,074	$300.75M	12.0%	+3.0%	14.792%
8/15/2025	BNP Paribas Financial Markets	29,277	$0.53M	0.0%	+4.5%	0.026%
8/15/2025	Boothbay Fund Management LLC	60,054	$1.09M	0.0%	-53.4%	0.053%
8/15/2025	Bellevue Group AG	20,555	$0.37M	0.0%	-5.7%	0.018%
8/15/2025	Bank of America Corp DE	484,004	$8.77M	0.0%	-26.6%	0.431%
8/15/2025	Adage Capital Partners GP L.L.C.	3,013,009	$54.57M	0.1%	+54.5%	2.684%
8/15/2025	Ameriprise Financial Inc.	208,081	$3.77M	0.0%	+118.7%	0.185%
8/14/2025	California State Teachers Retirement System	47,862	$0.87M	0.0%	+146.7%	0.043%
8/14/2025	Maverick Capital Ltd.	1,531,874	$27.74M	0.4%	+178.8%	1.364%
8/14/2025	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	31,383	$0.57M	0.0%	+5.4%	0.028%
8/14/2025	Alliancebernstein L.P.	2,331,583	$42.23M	0.0%	+4.0%	2.077%
8/14/2025	The Manufacturers Life Insurance Company	10,868	$0.20M	0.0%	+5.3%	0.010%
8/14/2025	HighVista Strategies LLC	19,274	$0.35M	0.1%	N/A	0.017%
8/14/2025	Stempoint Capital LP	152,652	$2.77M	0.9%	+46.0%	0.136%
8/14/2025	AXA S.A.	242,916	$4.40M	0.0%	+0.2%	0.216%

Data available starting January 2016

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.

Today's Range

Now: $34.30

$32.15

$34.74

50 Day Range

MA: $34.39

$31.12

$41.00

52 Week Range

Now: $34.30

$14.06

$42.00

Volume

537,092 shs

Average Volume

703,548 shs

Market Capitalization

$3.89 billion

P/E Ratio

N/A

Dividend Yield

N/A

Beta

0.06

Who are the company insiders with the largest holdings of NewAmsterdam Pharma?: NewAmsterdam Pharma's top insider shareholders include:
Nap BV Forgrowth (Major Shareholder)
James N Topper (Director)
Michael H Davidson (CEO)
Johannes Jacob Piete Kastelein (Insider)
Douglas F Kling (COO)
Louis G Lange (Director)
Louise Frederika Kooij (CAO)
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:
Jennison Associates LLC — 3.08%
UBS Group AG — 0.79%
TimesSquare Capital Management LLC — 0.73%
Pictet Asset Management Holding SA — 0.66%
Aberdeen Group plc — 0.64%
Handelsbanken Fonder AB — 0.37%
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:
Jennison Associates LLC
Pictet Asset Management Holding SA
TimesSquare Capital Management LLC
Keybank National Association OH
Avanza Fonder AB
Arizona State Retirement System
Wolverine Asset Management LLC
In the last year, company insiders that have sold NewAmsterdam Pharma company stock include:
Nap BV Forgrowth (Major Shareholder)
James N Topper (Director)
Michael H Davidson (CEO)
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:
Moody Aldrich Partners LLC
UBS Group AG
Swedbank AB
Aberdeen Group plc
DNB Asset Management AS
State of New Jersey Common Pension Fund D
Zurcher Kantonalbank Zurich Cantonalbank
Handelsbanken Fonder AB
Within the last year, these company insiders have bought NewAmsterdam Pharma stock:
Nap BV Forgrowth (Major Shareholder)
James N Topper (Director)
Michael H Davidson (CEO)
Johannes Jacob Piete Kastelein (Insider)
Learn More investors buying NewAmsterdam Pharma stock.