Insider · CIK 0001341382
James N Topper
Files at MBX (MBX Biosciences, Inc.), PHAT (Phathom Pharmaceuticals, Inc.), HLVX (HilleVax, Inc.), NAMS (NewAmsterdam Pharma Co N.V.). First filing May 13, 2025, latest Jun 26, 2025.
Where the trades landed
Last year at the 2 companies this insider has traded most, with each buy and sell on the bar it happened.
PHAT: Phathom Pharmaceuticals, Inc.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
NAMS: NewAmsterdam Pharma Co N.V.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 31Weak | NAMSbuy NewAmsterdam Pharma Co N.V. | $69k 3,780 shares | +0% | +23% from low-31% from high | |
| 25Weak | NAMSbuy NewAmsterdam Pharma Co N.V. | $167k 8,584 shares | +0% | +33% from low-26% from high | |
| 31Weak | PHATbuy Phathom Pharmaceuticals, Inc. | $15k 3,780 shares | +7% | +70% from low-80% from high | |
| 39Weak | Phathom Pharmaceuticals, Inc. | $24k 7,420 shares | +15% | +45% from low-83% from high | |
| 50Moderate | Phathom Pharmaceuticals, Inc. | $153k 48,203 shares | - | +37% from low-84% from high |
Transactions
Every row this insider has filed, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jun 24, 2025 | NAMS NewAmsterdam Pharma Co N.V. | POpen-market purchase Ordinary Sharesindirect: By Frazier Life Sciences X, L.P. | +2,520 | $18.43 | $46k | 3,024,873 | Jun 26, 2025 |
| Jun 25, 2025 | NAMS NewAmsterdam Pharma Co N.V. | POpen-market purchase Ordinary Sharesindirect: By Frazier Life Sciences X, L.P. | +1,260 | $18.26 | $23k | 3,026,133 | Jun 26, 2025 |
| Jun 16, 2025 | NAMS NewAmsterdam Pharma Co N.V. | POpen-market purchase Ordinary Sharesindirect: By Frazier Life Sciences X, L.P. | +8,584 | $19.50 | $167k | 3,022,153 | Jun 18, 2025 |
| Jun 3, 2025 | PHAT Phathom Pharmaceuticals, Inc. | AGrant or award Common Stock | +10,500 | $0.00 | $0 | 42,596 | Jun 5, 2025 |
| Jun 3, 2025 | PHAT Phathom Pharmaceuticals, Inc. | AGrant or award Stock Option (Right to Buy)derivative | +17,500 | $0.00 | $0 | 17,500 | Jun 5, 2025 |
| May 21, 2025 | PHAT Phathom Pharmaceuticals, Inc. | POpen-market purchase Common Stockindirect: By Frazier Life Sciences X, L.P. | +3,780 | $3.86 | $15k | 59,403 | May 23, 2025 |
| May 13, 2025 | PHAT Phathom Pharmaceuticals, Inc. | POpen-market purchase Common Stockindirect: By Frazier Life Sciences X, L.P. | +1,120 | $3.16 | $3,543 | 49,323 | May 15, 2025 |
| May 14, 2025 | PHAT Phathom Pharmaceuticals, Inc. | POpen-market purchase Common Stockindirect: By Frazier Life Sciences X, L.P. | +6,300 | $3.32 | $21k | 55,623 | May 15, 2025 |
| May 9, 2025 | PHAT Phathom Pharmaceuticals, Inc. | POpen-market purchase Common Stockindirect: By Frazier Life Sciences X, L.P. | +33,376 | $3.19 | $107k | 33,376 | May 13, 2025 |
| May 9, 2025 | PHAT Phathom Pharmaceuticals, Inc. | POpen-market purchase Common Stockindirect: By Frazier Life Sciences X, L.P. | +2,226 | $3.62 | $8,053 | 35,602 | May 13, 2025 |
| May 12, 2025 | PHAT Phathom Pharmaceuticals, Inc. | POpen-market purchase Common Stockindirect: By Frazier Life Sciences X, L.P. | +12,601 | $3.04 | $38k | 48,203 | May 13, 2025 |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.