Summary
Updated Aug 31, 2026
Robert J. Bass is Director of Groupon, Inc. (GRPN). 8 SEC Form 4 filings on record going back to 2024, most recently on 15 June 2026. Most recent open-market trade: bought $6K of LUCK on 9 June 2026. Lifetime open-market purchases: $158K. Lifetime open-market sales: $97K. Historical track record: 2/5 stars across 3 tracked purchases.
Recent Transactions
9Every recent SEC Form 4 transaction Robert J. Bass 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 | ★★☆☆☆ (2/5) |
| Total purchases tracked | 3 |
| Purchases with forward-return data | 3 |
| 30-day win rate | 67% |
| 90-day win rate | 67% |
| Avg 5-day return | -2.94% |
| Avg 30-day return | -2.66% |
| Avg 90-day return | -4.87% |
| Best 30-day return | +0.55% |
Trading Pattern
InsiderAlpha's records for Robert J. Bass go back to 2024: 8 primary Form 4 filings, an average of 2.7 per year. The typical open-market purchase is $39K (4 buys totaling $158K). The largest single buy on record is $100K of BXSL in 2025. Sales side: 1 recorded sale totaling $97K, so the filing history runs buy-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 Robert J. Bass 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.
- Richard Meynard Born - $485K of LUCK open-market activity in the last 12 months
- Jason Harinstein - $98K of LUCK open-market activity in the last 12 months
- John Alan Young - $87K of LUCK open-market activity in the last 12 months
- Lev Ekster - $50K of LUCK open-market activity in the last 12 months
- Robert M. Lavan - $31K of LUCK 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 Robert J. Bass?
Robert J. Bass is a corporate insider, tracked as Director of Groupon, Inc. (GRPN). InsiderAlpha holds 8 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 Robert J. Bass submitted recently?
2 primary Form 4 filings in the last 90 days, covering 2 companies.
Has Robert J. Bass been buying or selling stock?
Recorded transactions: 4 open-market purchases ($158K) and 1 open-market sale ($97K) across all tracked filings.
How accurate is Robert J. Bass's historical track record?
Across 3 tracked purchases, Robert J. Bass averaged -2.7% avg 30-day return with a 67% 30-day win rate. InsiderAlpha rates the track record at 2/5 stars.
Where can I see all of Robert J. Bass'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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