Robert Nelsen Insider Trades
10% owner10% owner at Aspen Neuroscience, Inc. and 1 other company. 2 significant open-market trades reported on SEC Form 4 in the last 180 days.
On EDGAR, this filer has 215 Form 4 filings on record since 2003, the latest on Nov 5, 2026. Full history on sec.gov
$23.1M
Bought
$0
Sold
2 / 0
Buys / Sells
2
Companies
Companies
Reported Trades
Open-market transactions only (code P and S), outside any 10b5-1 plan, dated by the day the filing reached EDGAR. Each row links to the filing.
Other Insiders at These Companies
Everyone else who reported a significant open-market trade at the same companies in the last 180 days. Several insiders buying at once is cluster buying.
- Peter A. ThompsonDirector at ASPE1 buy, $15.0M
- Orbimed Advisors LLCDirector at ASPE1 buy, $15.0M
- OrbiMed Capital GP Vii LLCDirector at ASPE1 buy, $15.0M
- Keith Crandell10% owner at ASPE1 buy, $20.0M
- Kristina Burow10% owner at ASPE1 buy, $20.0M
- Steven Gillis10% owner at ASPE1 buy, $20.0M
- Arch Venture Fund X, L.P.10% owner at ASPE1 buy, $20.0M
- Arch Venture Fund X Overage, L.P.10% owner at ASPE1 buy, $20.0M
- Arch Venture Partners X, L.P.10% owner at ASPE1 buy, $20.0M
- Arch Venture Partners X Overage, L.P.10% owner at ASPE1 buy, $20.0M
- Arch Venture Partners X, LLC10% owner at ASPE1 buy, $20.0M
- Arch Venture Partners Xiv, L.P.10% owner at ASPE1 buy, $18.0M
How to Read This Page
These are the trades an insider chose to make with their own money, not grants, option exercises or tax withholding. A purchase is the stronger signal (why buys carry more information than sales), and an insider who buys is locked out of selling for six months by the short-swing rule. The window here is 180 days; the full filing history lives on EDGAR.
Get this insider's next buy when it files
InsiderWatch reads every Form 4 as it reaches EDGAR, keeps the open-market buys that matter, and sends them by email and Telegram.
Try free for 7 daysEvery alert we send is logged with its timestamp and source.