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
Healthcare Holding B.V. Gilde · 10% owner
10% owner
$4.4M soldMatthew Fraser Ahearn · Chief Operating Officer
Chief Operating Officer
$839.1K soldRobert Joseph Ball · CEO & Executive Chairman
CEO & Executive Chairman
$187.7K sold$140.4K boughtJeffrey S. Points · Chief Financial Officer
Chief Financial Officer
$59.6K boughtRichard Buchholz · Director
Director
$14.8K boughtHas 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| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Healthcare Holding B.V. Gilde | 10% owner | $4.4M | — | 5 | — | |
| Matthew Fraser Ahearn | Chief Operating Officer | $839.1K | — | 2 | 100% of sales | |
| Robert Joseph Ball | CEO & Executive Chairman | $187.7K | $140.4K | 3 | — | |
| Jeffrey S. Points | Chief Financial Officer | — | $59.6K | 2 | — | |
| Richard Buchholz | Director | — | $14.8K | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Robert Joseph Ball CEO & Executive Chairman | Sale | 10,175 | $18.45 | $187.7K | 380,824 | |
traded | Healthcare Holding B.V. Gilde 10% owner | Sale | 1,196 | $22.60 | $27.0K | 2,185,914 | |
traded | Healthcare Holding B.V. Gilde 10% owner | Sale | 25,097 | $22.61 | $567.4K | 2,187,110 | |
traded | Matthew Fraser Ahearn Chief Operating Officer | SalePre-arranged (10b5-1) | 22,500 | $20.66 | $464.8K | 244,176 | |
traded | Healthcare Holding B.V. Gilde 10% owner | Sale | 9,433 | $22.63 | $213.5K | 2,212,207 | |
traded | Healthcare Holding B.V. Gilde 10% owner | Sale | 110,563 | $22.76 | $2.5M | 2,221,640 | |
traded | Healthcare Holding B.V. Gilde 10% owner | Sale | 48,279 | $23.10 | $1.1M | 2,332,203 | |
traded | Matthew Fraser Ahearn Chief Operating Officer | SalePre-arranged (10b5-1) | 20,000 | $18.71 | $374.3K | 271,676 | |
traded | Jeffrey S. Points Chief Financial Officer | Purchase | 2,000 | $15.00 | $30.0K | 70,785 | |
traded | Richard Buchholz Director | Purchase | 1,000 | $14.84 | $14.8K | 13,666 | |
traded | Robert Joseph Ball CEO & Executive Chairman | Purchase | 2,200 | $15.18 | $33.4K | 278,866 | |
traded | Robert Joseph Ball CEO & Executive Chairman | Purchase | 7,200 | $14.86 | $107.0K | 118,457 | |
traded | Jeffrey S. Points Chief Financial Officer | Purchase | 2,000 | $14.82 | $29.6K | 54,445 |
GET /stocks/filings/vX/form-4?tickers=SI&filing_date.gte=2025-10-23&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"SI"
],
"issuer_cik": "0001699350",
"owner_cik": "0002070664",
"accession_number": "0002070664-26-000006",
"form_type": "4",
"filing_date": "2026-09-14",
"period_of_report": "2026-09-14",
"issuer_name": "SHOULDER INNOVATIONS, INC.",
"issuer_trading_symbol": "SI",
"owner_name": "Ball Robert Joseph",
"is_director": true,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "CEO & Executive Chairman",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-14",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 10175,
"transaction_price_per_share": 18.4478,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 380824,
"transaction_value": 187706.36500000002,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F2",
"description": "The price reported in Column 4 is a weighted average sale price. The shares of Common Stock were sold in multiple transactions at prices ranging from $18.22 to $18.63, inclusive. The Reporting Person undertakes to provide upon request by the staff of the Securities & Exchange Commission, the Issuer or any security holder of the Issuer, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth herein. The shares of Common Stock were sold solely to cover the exercise price in connection with the exercise of the stock option."
}
]
},
{
"tickers": [
"SI"
],
"issuer_cik": "0001699350",
"owner_cik": "0001420106",
"accession_number": "0001193125-26-374359",
"form_type": "4",
"filing_date": "2026-08-28",
"period_of_report": "2026-08-26",
"issuer_name": "SHOULDER INNOVATIONS, INC.",
"issuer_trading_symbol": "SI",
"owner_name": "Gilde Healthcare Holding B.V.",
"is_director": false,
"is_officer": false,
"is_ten_percent_owner": true,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-26",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 1196,
"transaction_price_per_share": 22.6,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 2185914,
"transaction_value": 27029.600000000002,
"direct_or_indirect": "I",
"nature_of_ownership": "See footnote",
"footnotes": [
{
"id": "F1",
"description": "Held directly by Cooperatieve Gilde Healthcare V U.A. (\"Gilde\"). Gilde Healthcare V Management B.V. is the managing director of Gilde and has sole voting and dispositive power with respect to the shares held by Gilde. Gilde Healthcare V Management B.V. is owned by Gilde Healthcare Holding B.V. The managing partners of Gilde Healthcare Holding B.V. are Manapouri B.V. (of which Edwin de Graaf is the owner and managing director) and Martemanshurk B.V. (of which Pieter van der Meer is the owner and managing director). Geoff Pardo is a partner at Gilde and may be deemed to share voting and dispositive power with respect to the shares held of record by Gilde. Mr. Pardo disclaims beneficial ownership of such holdings, except to the extent of his pecuniary interest in the shares."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
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:
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.