Shoulder Innovations (SI) CEO Robert Ball Buys 2,200 Shares

What Happened
Robert Joseph Ball, CEO, Executive Chairman and a director of Shoulder Innovations, Inc. (SI), purchased 2,200 shares of the company's common stock in open-market transactions on March 13, 2026. The Form 4 reports a weighted-average purchase price of $15.18 per share for a reported total of $33,392. This was a purchase (insider buying), not a sale or option exercise.

Key Details

• Transaction date: 2026-03-13 (open-market purchases; transaction code P)
• Reported weighted-average price: $15.18 per share; total reported value: $33,392
• Price range (per footnote): purchases occurred at prices between $14.80 and $15.50; Reporting Person can provide a breakdown on request (Footnote F1).
• Shares owned after transaction: not stated in the information provided in this summary.
• Filing date: 2026-03-17 — filed within the normal Form 4 timing requirements (timely).
• No indication in the filing of option exercise, grant, gift, tax withholding, or a 10b5-1 plan.

Context
This was a straightforward open-market purchase by a company executive. Insider purchases are often watched by retail investors as one data point on management sentiment, but they do not guarantee future company performance.