Summary
Updated Aug 31, 2026
Eric W. Roberts is CHIEF BUSINESS OFFICER, Director of CalciMedica, Inc. (CALC). 17 SEC Form 4 filings on record going back to 2024, most recently on 21 August 2026. Most recent open-market trade: bought $8K of CALC on 18 September 2025. Lifetime open-market purchases: $341K. Historical track record: 3/5 stars across 16 tracked purchases.
Recent Transactions
18Every recent SEC Form 4 transaction Eric W. Roberts 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 | ★★★☆☆ (3/5) |
| Total purchases tracked | 16 |
| Purchases with forward-return data | 16 |
| 30-day win rate | 56% |
| 90-day win rate | 81% |
| Avg 5-day return | +10.10% |
| Avg 30-day return | +5.85% |
| Avg 90-day return | +28.20% |
| Best 30-day return | +70.19% |
Trading Pattern
InsiderAlpha's records for Eric W. Roberts go back to 2024: 17 primary Form 4 filings, an average of 5.7 per year. The typical open-market purchase is $21K (16 buys totaling $341K). The largest single buy on record is $200K of CALC in 2024. 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 Eric W. Roberts 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.
- Fred A. Middleton - $200K of CALC 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
Who is Eric W. Roberts?
Eric W. Roberts is a corporate insider, tracked as CHIEF BUSINESS OFFICER, Director of CalciMedica, Inc. (CALC). InsiderAlpha holds 17 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Eric W. Roberts submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has Eric W. Roberts been buying or selling stock?
Recorded transactions: 16 open-market purchases ($341K) and 0 open-market sales across all tracked filings.
How accurate is Eric W. Roberts's historical track record?
Across 16 tracked purchases, Eric W. Roberts averaged +5.9% avg 30-day return with a 56% 30-day win rate. InsiderAlpha rates the track record at 3/5 stars.
Where can I see all of Eric W. Roberts'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.
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