SI
SHOULDER INNOVATIONS, INC. · Healthcare · Market cap $402.6M
Insiders sold $5.1M net in the last 90 days ·3 sellers, 0 buyers· 2 of 13 sales under Rule 10b5-1 plans· latest Form 4 filed Sep 15, 2026
Insider Buying
$215K
reported purchases (SEC code P)
Insider Selling
$5.5M
reported sales (SEC code S)
Unique Insiders
5
in the rolling window
Latest filing
Oct 6, 2026
Ball Robert Joseph
SHOULDER INNOVATIONS, INC. (SI) has 30 SEC Form 4 filings (49 transaction rows) in the rolling window, disclosed by 5 distinct insiders. Most recent filing: Oct 6, 2026.
Inside the rolling window, 5 insiders at SHOULDER INNOVATIONS, INC. reported 7 open-market purchases totaling $215K and 15 open-market sales totaling $5.5M. The most active filer is 10% Owner Gilde Healthcare Holding B.V. with 10 filings. Insiders have net sold $5.5M over the trailing 6 months. The most recent open-market filing is a sale of 10,175 shares by CEO & Executive Chairman Ball Robert Joseph, dated Sep 14, 2026, worth $188K.
- Industry:Medical - Specialties
- CEO:Robert Joseph Ball
- Employees:74
- HQ:Grand Rapids, MI, US
- IPO:2025-07-31
| Source | |||||||
|---|---|---|---|---|---|---|---|
Ball Robert JosephFirst in 6 months | CEO & Executive Chairman | Sale | 10,175 | $188K | Sep 15 | +7.7% | SEC ↗ |
| 10% Owner | Sale | 1,196 | $27K | Aug 28 | -8.6% | SEC ↗ | |
| 10% Owner | Sale | 3,900 | $88K | Aug 24 | -13.0% | SEC ↗ | |
| 10% Owner | Sale | 20,516 | $464K | Aug 24 | -13.0% | SEC ↗ | |
| 10% Owner | Sale | 681 | $15K | Aug 24 | -13.0% | SEC ↗ | |
| Chief Operating Officer | Sale | 8,314 | $167K | Aug 18 | -8.5% | SEC ↗ | |
| Chief Operating Officer | Sale | 14,186 | $298K | Aug 18 | -8.5% | SEC ↗ | |
| 10% Owner | Sale | 7,338 | $166K | Aug 7 | -6.1% | SEC ↗ | |
| 10% Owner | Sale | 2,095 | $47K | Aug 7 | -6.1% | SEC ↗ | |
| 10% Owner | Sale | 10,751 | $244K | Aug 5 | — | SEC ↗ | |
| 10% Owner | Sale | 99,812 | $2.3M | Aug 5 | — | SEC ↗ | |
Gilde Healthcare Holding B.V.First filing | 10% Owner | Sale | 28,245 | $660K | Aug 3 | — | SEC ↗ |
Gilde Healthcare Holding B.V.First filing | 10% Owner | Sale | 20,034 | $455K | Aug 3 | — | SEC ↗ |
Ahearn Matthew FraserFirst filing | Chief Operating Officer | Sale | 15,856 | $296K | Jun 16 | — | SEC ↗ |
Ahearn Matthew FraserFirst filing | Chief Operating Officer | Sale | 4,144 | $78K | Jun 16 | — | SEC ↗ |
Points Jeffrey S.First in 3 months | Chief Financial Officer | Purchase | 2,000 | $30K | Mar 17 | — | SEC ↗ |
Ball Robert JosephFirst in 3 months | CEO & Executive Chairman | Purchase | 2,200 | $33K | Mar 17 | — | SEC ↗ |
Buchholz RichardFirst filing | Director | Purchase | 1,000 | $15K | Mar 17 | — | SEC ↗ |
Ball Robert JosephFirst filing | CEO & Executive Chairman | Purchase | 3,300 | $49K | Dec 15 | — | SEC ↗ |
Ball Robert JosephFirst filing | CEO & Executive Chairman | Purchase | 3,900 | $58K | Dec 15 | — | SEC ↗ |
Points Jeffrey S.First filing | Chief Financial Officer | Purchase | 995 | $15K | Dec 15 | — | SEC ↗ |
Points Jeffrey S.First filing | Chief Financial Officer | Purchase | 1,005 | $15K | Dec 15 | — | SEC ↗ |
Earnings: last 7 quarters
Congress trading SI 5 all-time
- RRep. Chris JacobsOther$1,001 - $15,0002022-11-08
- RRep. Chris JacobsPurchase$1,001 - $15,0002022-07-18
- DSen. Thomas Richard CarperPurchase$1,001 - $15,0002022-01-31
- DSen. Thomas Richard CarperPurchase$1,001 - $15,0002020-11-20
- DSen. Thomas Richard CarperPurchase$1,001 - $15,0002020-11-20
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does SI have?
SHOULDER INNOVATIONS, INC. (SI) has 30 SEC Form 4 filings (49 transaction rows) in the rolling 365-day window, disclosed by 5 distinct insiders. Most recent filing: Oct 6, 2026.
When was the most recent SEC Form 4 filing for SI?
The most recent Form 4 filing for SI on Tracefour is dated Oct 6, 2026.
Who is the most active insider at SI?
The most active SEC Form 4 filer at SI in the rolling window is 10% Owner Gilde Healthcare Holding B.V., with 10 filings.
What is the net insider flow at SI over the last 6 months?
Over the trailing 180 days, insiders at SI have net sold $5.5M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at SI in the current window?
Inside the rolling window, insiders at SI bought $215K and sold $5.5M based on SEC Form 4 filings.
Can I get alerts for SI insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at SHOULDER INNOVATIONS, INC. (SI). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
SHOULDER INNOVATIONS, INC. is in the Healthcare sector.