Insiders who reported open-market trades in the last 12 months at the companies Robert Joseph Ball 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.
Robert Joseph Ball is a corporate insider, tracked as CEO & Executive Chairman, Director of SHOULDER INNOVATIONS, INC. (SI). InsiderAlpha holds 6 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Robert Joseph Ball submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Robert Joseph Ball been buying or selling stock?
Recorded transactions: 3 open-market purchases ($156K) and 1 open-market sale ($188K) across all tracked filings.
Robert Joseph Ball is CEO & Executive Chairman, Director of SHOULDER INNOVATIONS, INC. (SI). 6 SEC Form 4 filings on record going back to 2025, most recently on 15 September 2026. Most recent open-market trade: sold $188K of SI on 15 September 2026. Lifetime open-market purchases: $156K. Lifetime open-market sales: $188K.
Recent transactions
8
The latest 8 SEC Form 4 transactions reported by Robert Joseph Ball.
InsiderAlpha's records for Robert Joseph Ball go back to 2025: 6 primary Form 4 filings, an average of 3.0 per year. The typical open-market purchase is $52K (3 buys totaling $156K). The largest single buy on record is $93K of SI in 2025. Sales side: 1 recorded sale totaling $188K, so the filing history runs sell-heavy by dollar value. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
