Summary
Updated Aug 30, 2026
Casdin Capital, LLC is Director, 10% Owner of GeneDx Holdings Corp. (WGS). 4 SEC Form 4 filings on record going back to 2025, most recently on 8 June 2026. Most recent open-market trade: bought $2.64M of WGS on 8 June 2026. Lifetime open-market purchases: $32.57M. Lifetime open-market sales: $60.45M. Historical track record: 5/5 stars across 3 tracked purchases.
Recent Transactions
6Every recent SEC Form 4 transaction Casdin Capital, LLC has reported, most recent first.
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realized performance after each tracked open-market purchase.
| Metric | Value |
|---|---|
| InsiderAlpha rating | ★★★★★ (5/5) |
| Total purchases tracked | 3 |
| Purchases with forward-return data | 3 |
| 30-day win rate | 100% |
| 90-day win rate | 100% |
| Avg 5-day return | +14.56% |
| Avg 30-day return | +32.04% |
| Avg 90-day return | +78.55% |
| Best 30-day return | +40.07% |
Trading Pattern
InsiderAlpha's records for Casdin Capital, LLC go back to 2025: 4 primary Form 4 filings, an average of 2.0 per year. The typical open-market purchase is $4.07M (8 buys totaling $32.57M). The largest single buy on record is $8.47M of WGS in 2026. Sales side: 1 recorded sale totaling $60.45M, so the filing history runs sell-heavy by dollar value. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Casdin Capital, LLC files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Keith A. Meister - $74.03M of WGS open-market activity in the last 12 months
- Katherine Stueland - $11.16M of WGS open-market activity in the last 12 months
- Joshua Ruch - $6.09M of WGS open-market activity in the last 12 months
- Kevin Feeley - $3.02M of WGS open-market activity in the last 12 months
- Bryan Dechairo - $851K of WGS open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
What is Casdin Capital, LLC?
Casdin Capital, LLC is an investment firm, tracked as Director, 10% Owner of GeneDx Holdings Corp. (WGS). InsiderAlpha holds 4 primary Form 4 filings for it, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Casdin Capital, LLC submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Casdin Capital, LLC been buying or selling stock?
Recorded transactions: 8 open-market purchases ($32.57M) and 1 open-market sale ($60.45M) across all tracked filings.
How accurate is Casdin Capital, LLC's historical track record?
Across 3 tracked purchases, Casdin Capital, LLC averaged +32.0% avg 30-day return with a 100% 30-day win rate. InsiderAlpha rates the track record at 5/5 stars.
Where can I see all of Casdin Capital, LLC's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Follow Casdin Capital, LLC and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial