Louis G Lange insider trades: NewAmsterdam Pharma (NAMS) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Louis reports to the SEC
and 2 more companies
Open-market buys and sales
53 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Mar 11, 2026 | NAMS | ↓ Sell | 44,619 | $30.42 | $1.4M | Direct | Mar 12, 2026 (1d) |
| Mar 6, 2026 | NAMS | ↓ Sell | 28,186 | $29.41 | $829K | Indirect | Mar 10, 2026 (4d) |
| Feb 13, 2024 | NAMS | ↑ Buy | 5,000 | $19.00 | $95K | Indirect | Feb 21, 2024 (8d) |
| Dec 23, 2019 | BOLD | ↓ Sell | 10,000 | $59.60 | $596K | Direct | Dec 27, 2019 (4d) |
| Dec 23, 2019 | BOLD | ↓ Sell | 1,000 | $59.60 | $60K | By Amygdala Lange Trust | Dec 27, 2019 (4d) |
| Sep 23, 2019 | BOLD | ↓ Sell | 10,000 | $32.16 | $322K | Direct | Sep 25, 2019 (2d) |
| Sep 23, 2019 | BOLD | ↓ Sell | 1,000 | $32.18 | $32K | By Amygdala Lange Trust | Sep 25, 2019 (2d) |
| Jun 24, 2019 | BOLD | ↓ Sell | 20,000 | $37.77 | $755K | Direct | Jun 26, 2019 (2d) |
| Jun 24, 2019 | BOLD | ↓ Sell | 1,000 | $38.20 | $38K | By Amygdala Lange Trust | Jun 26, 2019 (2d) |
| Mar 25, 2019 | BOLD | ↓ Sell | 20,000 | $36.00 | $720K | Direct | Mar 27, 2019 (2d) |
| Mar 25, 2019 | BOLD | ↓ Sell | 1,000 | $36.00 | $36K | By Amygdala Lange Trust | Mar 27, 2019 (2d) |
| Mar 25, 2019 | BOLD | ↓ Sell | 558 | $35.94 | $20K | By Lange Minor's Trust | Mar 27, 2019 (2d) |
| Dec 24, 2018 | BOLD | ↓ Sell | 20,000 | $18.67 | $373K | Direct | Dec 27, 2018 (3d) |
| Dec 24, 2018 | BOLD | ↓ Sell | 10,000 | $18.50 | $185K | By Asset Management Ventures Fund, L.P. | Dec 27, 2018 (3d) |
| Dec 24, 2018 | BOLD | ↓ Sell | 1,000 | $18.71 | $19K | By Lange Minor's Trust | Dec 27, 2018 (3d) |
| Dec 24, 2018 | BOLD | ↓ Sell | 1,000 | $18.70 | $19K | By Amygdala Lange Trust | Dec 27, 2018 (3d) |
| Nov 15, 2018 | BOLD | ↓ Sell | 20,000 | $22.49 | $450K | Direct | Nov 16, 2018 (1d) |
| Nov 15, 2018 | BOLD | ↓ Sell | 4,000 | $22.49 | $90K | By Adrienne M. MacMillan Revocable Trust | Nov 16, 2018 (1d) |
| Sep 24, 2018 | BOLD | ↓ Sell | 20,000 | $37.35 | $747K | Direct | Sep 26, 2018 (2d) |
| Sep 24, 2018 | BOLD | ↓ Sell | 10,000 | $37.45 | $375K | By Asset Management Ventures Fund, L.P. | Sep 26, 2018 (2d) |
| Sep 24, 2018 | BOLD | ↓ Sell | 1,000 | $37.27 | $37K | By Lange Minor's Trust | Sep 26, 2018 (2d) |
| Sep 24, 2018 | BOLD | ↓ Sell | 1,000 | $37.27 | $37K | By Amygdala Lange Trust | Sep 26, 2018 (2d) |
| Sep 24, 2018 | BOLD | ↓ Sell | 1,000 | $37.25 | $37K | By Adrienne M. MacMillan Revocable Trust | Sep 26, 2018 (2d) |
| Jun 25, 2018 | BOLD | ↓ Sell | 20,000 | $40.42 | $808K | Direct | Jun 27, 2018 (2d) |
| Jun 25, 2018 | BOLD | ↓ Sell | 10,000 | $40.87 | $409K | By Asset Management Ventures Fund, L.P. | Jun 27, 2018 (2d) |
| Jun 25, 2018 | BOLD | ↓ Sell | 1,000 | $40.86 | $41K | By Amygdala Lange Trust | Jun 27, 2018 (2d) |
| Jun 25, 2018 | BOLD | ↓ Sell | 1,000 | $40.78 | $41K | By Adrienne M. MacMillan Revocable Trust | Jun 27, 2018 (2d) |
| Jun 25, 2018 | BOLD | ↓ Sell | 900 | $40.74 | $37K | By Lange Minor's Trust | Jun 27, 2018 (2d) |
| Jun 25, 2018 | BOLD | ↓ Sell | 100 | $41.47 | $4K | By Lange Minor's Trust | Jun 27, 2018 (2d) |
| Mar 26, 2018 | BOLD | ↓ Sell | 25,000 | $28.59 | $715K | By Asset Management Ventures Fund, L.P. | Mar 28, 2018 (2d) |
| Mar 26, 2018 | BOLD | ↓ Sell | 20,000 | $29.27 | $585K | Direct | Mar 28, 2018 (2d) |
| Mar 26, 2018 | BOLD | ↓ Sell | 1,000 | $28.87 | $29K | By Adrienne M. MacMillan Revocable Trust | Mar 28, 2018 (2d) |
| Mar 26, 2018 | BOLD | ↓ Sell | 1,000 | $28.86 | $29K | By Amygdala Lange Trust | Mar 28, 2018 (2d) |
| Mar 26, 2018 | BOLD | ↓ Sell | 517 | $28.32 | $15K | By Lange Minor's Trust | Mar 28, 2018 (2d) |
| Mar 26, 2018 | BOLD | ↓ Sell | 483 | $29.57 | $14K | By Lange Minor's Trust | Mar 28, 2018 (2d) |
| Dec 22, 2017 | BOLD | ↓ Sell | 15,000 | $30.88 | $463K | Direct | Dec 26, 2017 (4d) |
| Dec 22, 2017 | BOLD | ↓ Sell | 1,000 | $30.90 | $31K | By Adrienne M. MacMillan Revocable Trust | Dec 26, 2017 (4d) |
| Dec 22, 2017 | BOLD | ↓ Sell | 1,000 | $30.87 | $31K | By Lange Minors' Trust | Dec 26, 2017 (4d) |
| Dec 22, 2017 | BOLD | ↓ Sell | 1,000 | $30.86 | $31K | By Amygdala Lange Trust | Dec 26, 2017 (4d) |
| Sep 29, 2017 | BOLD | ↓ Sell | 5,000 | $28.46 | $142K | Direct | Sep 29, 2017 (0d) |
| Sep 29, 2017 | BOLD | ↓ Sell | 2,000 | $28.29 | $57K | By Adrienne M. MacMillan Revocable Trust | Sep 29, 2017 (0d) |
| Sep 29, 2017 | BOLD | ↓ Sell | 2,000 | $28.25 | $57K | By Amygdala Lange Trust | Sep 29, 2017 (0d) |
| Sep 29, 2017 | BOLD | ↓ Sell | 1,800 | $28.14 | $51K | By Lange Minors' Trust | Sep 29, 2017 (0d) |
| Sep 29, 2017 | BOLD | ↓ Sell | 200 | $29.25 | $6K | By Lange Minors' Trust | Sep 29, 2017 (0d) |
| Sep 25, 2017 | BOLD | ↓ Sell | 15,000 | $28.31 | $425K | Direct | Sep 26, 2017 (1d) |
| Sep 25, 2017 | BOLD | ↓ Sell | 1,000 | $28.35 | $28K | By Adrienne M. MacMillan Revocable Trust | Sep 26, 2017 (1d) |
| Sep 25, 2017 | BOLD | ↓ Sell | 1,000 | $28.35 | $28K | By Amygdala Lange Trust | Sep 26, 2017 (1d) |
| Sep 25, 2017 | BOLD | ↓ Sell | 641 | $28.07 | $18K | By Lange Minors' Trust | Sep 26, 2017 (1d) |
| Sep 25, 2017 | BOLD | ↓ Sell | 359 | $28.88 | $10K | By Lange Minors' Trust | Sep 26, 2017 (1d) |
| Jun 26, 2017 | BOLD | ↓ Sell | 15,000 | $19.78 | $297K | Direct | Jun 28, 2017 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other NAMS insiders
Open-market trades in the last 12 months
About Louis G Lange's insider trades
Louis G Lange is an insider at NewAmsterdam Pharma (NAMS). Since Apr 2, 2009, Louis has reported 3 open-market purchases worth $294K and 50 sales worth $21.1M on SEC Form 4. In the last 12 months: 2 sales ($2.2M).
Their filings also include grants and awards (32 filings), option exercises (29 filings), shares withheld for taxes (22 filings), shares returned to the company (2 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every NAMS insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.