Insider · CIK 0002070664
Robert Joseph Ball
Files at SI (SHOULDER INNOVATIONS, INC.). First filing Sep 15, 2025, latest Sep 14, 2026.
Robert Joseph Ball files SEC Form 4 as CEO, chair and director at SI (SHOULDER INNOVATIONS, INC.). Since Sep 15, 2025, Robert Joseph Ball has reported 3 open-market buys worth $263k and 1 open-market sell worth $188k, the latest filed on Sep 14, 2026.
A track record needs three past buys with six months of prices behind them; Robert Joseph Ball has 0, so none is measured yet.
The newest scored trade: sold $188k of SI on Sep 14, 2026, filed Sep 14, 2026, scored 22 (weak). In the last 12 months: 2 buys worth $140k and 1 sell worth $188k.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
SI: SHOULDER INNOVATIONS, INC.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 22Weak | SIsell SHOULDER INNOVATIONS, INC. | $188k 10,175 shares | -3% | - | |
| 41Moderate | SHOULDER INNOVATIONS, INC. | $33k 2,200 shares | +1% | +35% from low-10% from high | |
| 46Moderate | SHOULDER INNOVATIONS, INC. | $107k 7,200 shares | +6% | +36% from low-7% from high | |
| 46Moderate | SHOULDER INNOVATIONS, INC. | $123k 8,000 shares | +8% | +24% from low-6% from high |
Transactions
Every row this insider has filed, 22 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 14, 2026 | SI SHOULDER INNOVATIONS, INC. | MOption exercise Common Stock | +89,233 | $2.10 | $187k | 390,999 | 29 d ago |
| Sep 14, 2026 | SI SHOULDER INNOVATIONS, INC. | SOpen-market sale Common Stock | -10,175 | $18.45 | $188k | 380,824 | 29 d ago |
| Sep 14, 2026 | SI SHOULDER INNOVATIONS, INC. | MOption exercise Stock Optionderivative | -89,233 | $0.00 | $0 | 92,143 | 29 d ago |
| Apr 30, 2026 | SI SHOULDER INNOVATIONS, INC. | MOption exercise Common Stock | +10,000 | $2.48 | $25k | 300,018 | Apr 30, 2026 |
| Apr 30, 2026 | SI SHOULDER INNOVATIONS, INC. | MOption exercise Stock Optionderivative | -10,000 | $0.00 | $0 | 309,756 | Apr 30, 2026 |
| Mar 13, 2026 | SI SHOULDER INNOVATIONS, INC. | POpen-market purchase Common Stock | +2,200 | $15.18 | $33k | 278,866 | Mar 17, 2026 |
| Feb 6, 2026 | SI SHOULDER INNOVATIONS, INC. | MOption exercise Common Stock | +10,000 | $2.48 | $25k | 274,604 | Feb 10, 2026 |
| Feb 6, 2026 | SI SHOULDER INNOVATIONS, INC. | MOption exercise Common Stock | +2,062 | $2.10 | $4,328 | 276,666 | Feb 10, 2026 |
| Feb 6, 2026 | SI SHOULDER INNOVATIONS, INC. | MOption exercise Stock Optionderivative | -10,000 | $0.00 | $0 | 319,756 | Feb 10, 2026 |
| Feb 6, 2026 | SI SHOULDER INNOVATIONS, INC. | MOption exercise Stock Optionderivative | -2,062 | $0.00 | $0 | 181,376 | Feb 10, 2026 |
| Jan 30, 2026 | SI SHOULDER INNOVATIONS, INC. | AGrant or award Stock Optionderivative | +265,351 | $0.00 | $0 | 265,351 | Feb 3, 2026 |
| Dec 31, 2025 | SI SHOULDER INNOVATIONS, INC. | AGrant or award Common Stock | +1,661 | $12.16 | $20k | 120,118 | Jan 8, 2026 |
| Dec 11, 2025 | SI SHOULDER INNOVATIONS, INC. | POpen-market purchase Common Stock | +3,300 | $14.83 | $49k | 114,557 | Dec 15, 2025 |
| Dec 12, 2025 | SI SHOULDER INNOVATIONS, INC. | POpen-market purchase Common Stock | +3,900 | $14.89 | $58k | 118,457 | Dec 15, 2025 |
| Sep 11, 2025 | SI SHOULDER INNOVATIONS, INC. | POpen-market purchase Common Stock | +2,000 | $14.90 | $30k | 105,259 | Sep 15, 2025 |
| Sep 12, 2025 | SI SHOULDER INNOVATIONS, INC. | POpen-market purchase Common Stock | +6,000 | $15.49 | $93k | 111,259 | Sep 15, 2025 |
| Aug 1, 2025 | SI SHOULDER INNOVATIONS, INC. | CConversion Common Stock | +85,888 | - | - | 103,259 | Aug 5, 2025 |
| Aug 1, 2025 | SI SHOULDER INNOVATIONS, INC. | CConversion Series Seed Convertible Preferred Stockderivative | -222,304 | - | - | 0 | Aug 5, 2025 |
| Aug 1, 2025 | SI SHOULDER INNOVATIONS, INC. | CConversion Series A Convertible Preferred Stockderivative | -176,086 | - | - | 0 | Aug 5, 2025 |
| Aug 1, 2025 | SI SHOULDER INNOVATIONS, INC. | CConversion Series B Convertible Preferred Stockderivative | -387,346 | - | - | 0 | Aug 5, 2025 |
| Aug 1, 2025 | SI SHOULDER INNOVATIONS, INC. | CConversion Series D Convertible Preferred Stockderivative | -706,572 | - | - | 0 | Aug 5, 2025 |
| Aug 1, 2025 | SI SHOULDER INNOVATIONS, INC. | CConversion Series E Convertible Preferred Stockderivative | -146,459 | - | - | 0 | Aug 5, 2025 |
Questions about Robert Joseph Ball
Answered from the filings on this page, as of the latest one.
Is Robert Joseph Ball buying or selling?
In the last 12 months Robert Joseph Ball reported 2 open-market buys worth $140k and 1 open-market sell worth $188k on SEC Form 4; the latest was sold $188k of SI on Sep 14, 2026. Grants, option exercises and tax withholding are not counted.
How did Robert Joseph Ball's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Robert Joseph Ball has 0.
Where does Robert Joseph Ball file Form 4?
Robert Joseph Ball has filed Form 4 at SI (SHOULDER INNOVATIONS, INC.) as CEO & Executive Chairman. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.