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Insider Cluster Activity
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| Ticker | Type | Sentiment | Impact | Summary | Date |
|---|---|---|---|---|---|
| ELAN | CLUSTER | neutral | 3/10 | Two Elanco insiders (Director Herendeen and CFO VanHimbergen) made open-market purchases totaling $334K in the week foll | Aug 10, 2026 |
| MRK | CLUSTER | neutral | 2/10 | Four Merck executives sold a combined ~$12M in open-market shares over two days following the Q2 2026 earnings release. | Aug 10, 2026 |
| ATTO | CLUSTER | bullish | 8/10 | Four major 10% owners (Sanofi, Redmile, venBio, Frazier Life Sciences) collectively purchased $25M in open-market shares | Aug 10, 2026 |
| IMNM | CLUSTER | neutral | 3/10 | Two insiders at Immunome (IMNM) sold a total of ~$2.82M in shares over a 7-day window. The CBO sold $2.27M after exercis | Aug 10, 2026 |
| TEVA | CLUSTER | neutral | 2/10 | Three Teva insiders sold a combined $1.34M in shares over the past week, representing 0.003% of the $41.2B market cap, a | Aug 10, 2026 |
| MRK | CLUSTER | neutral | 2/10 | Two EVPs at Merck (Williams and Maraldo) executed open-market sales totaling ~$1.4M on August 5, 2026, one day after the | Aug 8, 2026 |
| OKYO | CLUSTER | bullish | 5/10 | Six OKYO Pharma insiders, including the CEO, Chief Development Officer, Chief Scientific Officer, Chief Medical Officer, | Aug 8, 2026 |
| VKTX | CLUSTER | neutral | 4/10 | Three top executives at Viking Therapeutics (CEO, CFO, COO) collectively sold $6.27M in stock on the same day (July 29, | Aug 8, 2026 |
| TWST | CLUSTER | neutral | 4/10 | A cluster of five Twist Bioscience insiders, including the CEO, President/COO, and CAO, sold a total of $2.35M in stock | Aug 8, 2026 |
| GEVO | CLUSTER | bearish | 4/10 | Four Gevo insiders, including the CEO and CFO, sold a total of $466K in open-market transactions on the same day (August | Aug 8, 2026 |
| UTHR | CLUSTER | neutral | 2/10 | CEO Martine Rothblatt and EVP/GC Paul Mahon sold a combined ~$7.5M in open-market shares on August 6, 2026, the day afte | Aug 8, 2026 |
| ATTO | CLUSTER | neutral | 5/10 | No summary provided | Aug 7, 2026 |
| ALKS | CLUSTER | bearish | 4/10 | Three Alkermes insiders, including a director and two EVPs, sold a total of $2.78M in open-market shares on August 3, 20 | Aug 7, 2026 |
| AMGN | CLUSTER | neutral | 2/10 | Two Amgen senior executives (SVP & CCO Nancy Grygiel and SVP of HR Derek Miller) executed open-market sales totaling app | Aug 7, 2026 |
| PGEN | CLUSTER | neutral | 2/10 | CFO Thomasian sold 100K shares ($606K) and COO Shah sold 32.7K shares ($225K) in the past week, totaling $831K. This rep | Aug 7, 2026 |
| JNJ | CLUSTER | neutral | 3/10 | JNJ CEO Joaquin Duato and EVP/Chief Legal Officer Elizabeth Forminard executed ~$16.6M in open-market sales over two day | Aug 7, 2026 |
| ACAD | CLUSTER | neutral | 2/10 | Two ACAD insiders (CFO and EVP R&D) sold a combined $601K in open-market transactions over a 7-day window. The total rep | Aug 7, 2026 |
| ATTO | CLUSTER | bullish | 7/10 | Two major 10% owners, Frazier Life Sciences and Sanofi, made open-market purchases totaling $15.1M at $17/share on Augus | Aug 7, 2026 |
| INCY | CLUSTER | neutral | 2/10 | Two senior R&D executives at Incyte (President and Chief Scientific Officer) sold a combined $2.18M of stock in the week | Aug 7, 2026 |
| PFE | CLUSTER | bullish | 4/10 | Two Pfizer directors (Blaylock and Buckley) made open-market purchases totaling ~$1.96M on the same day the company's SV | Aug 7, 2026 |
| UTHR | CLUSTER | mixed | 6/10 | United Therapeutics CEO Martine Rothblatt and EVP Paul Mahon collectively sold ~$490K in open-market shares within two d | Aug 7, 2026 |
| CSTL | CLUSTER | neutral | 2/10 | Three C-suite insiders at Castle Biosciences, including the CEO and COO, sold shares worth a combined ~$240K over a two- | Aug 7, 2026 |
| CORT | CLUSTER | neutral | 2/10 | Three executives at Corcept Therapeutics sold a combined $3.88M in open-market stock over a 7-day window, including the | Aug 6, 2026 |
| TEVA | CLUSTER | neutral | 2/10 | Two Teva insiders (Hughes and Jover) sold a combined $1.34M in open-market shares on August 3, 2026, at ~$34.88/share, f | Aug 6, 2026 |
| ALMS | CLUSTER | neutral | 2/10 | Six C-suite insiders at Alumis Inc. (ALMS) collectively sold $394K worth of shares on August 3, 2026, all at $26.37 per | Aug 6, 2026 |
| VCEL | CLUSTER | neutral | 2/10 | Two Vericel insiders sold a combined $541,400 in shares over a 7-day window, with the COO's sale being a same-day exerci | Aug 6, 2026 |
| MAZE | CLUSTER | neutral | 3/10 | CEO Jason Coloma and CSBO Atul Dandekar sold a combined $1.0M in MAZE shares over a 7-day window, with the CEO alone sel | Aug 6, 2026 |
| CAMP | CLUSTER | bullish | 8/10 | A powerful insider buying cluster at Camp4 Therapeutics: 5AM Partners VI (a 10% owner) made a $4.86M open-market purchas | Aug 6, 2026 |
| TWST | CLUSTER | neutral | 2/10 | Five Twist Bioscience insiders, including CEO Emily Leproust and President/COO Patrick Finn, sold a combined $884K in op | Aug 6, 2026 |
| CSTL | CLUSTER | neutral | 2/10 | Three C-suite insiders at Castle Biosciences (CEO, COO, CCO) sold a total of ~$293K in open-market shares over a 7-day w | Aug 6, 2026 |