Massivemarkets

SEC Form 4

Shoulder Innovations, Inc. (SI) insider trading

In the 12 months to Oct 23, 2026, 3 SI insiders reported open-market sales of $5.5M across 8 filings; 3 insiders bought $214.9K.

Latest filing · Last 12 months · Source: SEC EDGAR · How we count

Open-market sales
$5.5M
8 filings · 3 insiders
Open-market purchases
$214.9K
5 filings
Pre-arranged sales (10b5-1)
2 of 8
$839.1K of $5.5M sold (15%)

Who traded SI, and when

  • Purchase
  • Sale
  • Sale, pre-arranged (10b5-1)

SI daily close from Oct 23, 2025 to Oct 23, 2026, between $11.01 and $24.25, last $19.66. 8 sale and 5 purchase filings by 5 insiders, marked at their filing dates. Healthcare Holding B.V. Gilde, 10% owner: sold $4.4M across 5 filings, first filed Aug 3, 2026, last Aug 28, 2026. Matthew Fraser Ahearn, Chief Operating Officer: sold $839.1K across 2 filings, first filed Jun 16, 2026, last Aug 18, 2026. Robert Joseph Ball, CEO & Executive Chairman: sold $187.7K and bought $140.4K across 3 filings, first filed Dec 15, 2025, last Sep 14, 2026. Jeffrey S. Points, Chief Financial Officer: bought $59.6K across 2 filings, first filed Dec 15, 2025, last Mar 17, 2026. Richard Buchholz, Director: bought $14.8K across 1 filing, first filed Mar 17, 2026, last Mar 17, 2026.

Largest mark · tap a row for others

Healthcare Holding B.V. Gilde · 10% owner

Filing 1 of 3 within a week · $3,845,530 total

Sale $1,115,176

48,279 shares at $23.10 avg

Filed Aug 3, 2026 · traded Jul 30

Close on filing date $22.38

SI daily closelast $19.66

Healthcare Holding B.V. Gilde · 10% owner

$4.4M sold

Matthew Fraser Ahearn · Chief Operating Officer

$839.1K sold

Robert Joseph Ball · CEO & Executive Chairman

$187.7K sold$140.4K bought

Jeffrey S. Points · Chief Financial Officer

$59.6K bought

Richard Buchholz · Director

$14.8K bought
One row per insider; marks sit at the SEC filing date, sized by dollar value.

Has Shoulder Innovations, Inc.'s CEO sold stock?

Yes. Robert Joseph Ball (CEO) sold 10,175 shares ($187.7K) in Sep 2026.

Open-market trades

13 filings in the last 12 months
InsiderRoleSoldBoughtFilingsPre-arranged (10b5-1)Last filed
Healthcare Holding B.V. Gilde10% owner$4.4M—5—
Matthew Fraser AhearnChief Operating Officer$839.1K—2100% of sales
Robert Joseph BallCEO & Executive Chairman$187.7K$140.4K3—
Jeffrey S. PointsChief Financial Officer—$59.6K2—
Richard BuchholzDirector—$14.8K1—
Other insider activity (not market trades) · 25 records
  • Option exercises9 records
  • Tax withholding2 records
  • Grants and awards13 records
  • Gifts1 record

Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.

Build this yourself

This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:

Agent prompt

Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for SI every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.

How to read this page

Open-market purchase or sale
A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
Pre-arranged (10b5-1)
The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
Filing date
Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.