SI · Insider trading · 13F holders · Congress trades
Shoulder Innovations, Inc. (SI)
Who is buying and selling SI: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 4
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $5.1M
- Congress trades, 12 months
- 3
SI at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 3 SI insiders filed 7 sales worth $5.1M on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
- 4 13F filers hold SI among their 50 largest positions, worth $22.9M combined. The biggest bets by portfolio weight are Sectoral Asset Management Inc (6.1%), CM Management, LLC (1.9%) and Roubaix Capital, LLC (1.9%). In their latest 13Fs, 0 managers opened a new position and 2 added to one.
- Members of Congress have disclosed 5 SI trades since 2013, 2 purchases and 1 sale in the past year; the latest was Chris Jacobs (R-NY), selling $1K–15K on Nov 8, 2022.
- SI last closed at $20.44 on Oct 29, 2026.
SI insider trading
Between Aug 1, 2026 and Oct 29, 2026, 3 SI insiders filed 7 sales worth $5.1M on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Sep 14, 2026 | Ball Robert Joseph | CEO & Executive Chairman, Director | Sale | 10,175 | $18.45 | $188K | SEC |
| Aug 28, 2026 | Gilde Healthcare Holding B.V. | 10% Owner | Sale | 1,196 | $22.60 | $27K | SEC |
| Aug 24, 2026 | Gilde Healthcare Holding B.V. | 10% Owner | Sale | 25,097 | $22.61 | $567K | SEC |
| Aug 18, 2026 | Ahearn Matthew Fraser | Chief Operating Officer, Director | Sale10b5-1 | 22,500 | $20.66 | $465K | SEC |
| Aug 7, 2026 | Gilde Healthcare Holding B.V. | 10% Owner | Sale | 9,433 | $22.63 | $213K | SEC |
| Aug 5, 2026 | Gilde Healthcare Holding B.V. | 10% Owner | Sale | 110,563 | $22.76 | $2.5M | SEC |
| Aug 3, 2026 | Gilde Healthcare Holding B.V. | 10% Owner | Sale | 48,279 | $23.10 | $1.1M | SEC |
Who owns SI? Hedge funds and superinvestors
4 13F filers hold SI among their 50 largest positions, worth $22.9M combined. The biggest bets by portfolio weight are Sectoral Asset Management Inc (6.1%), CM Management, LLC (1.9%) and Roubaix Capital, LLC (1.9%). In their latest 13Fs, 0 managers opened a new position and 2 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Sectoral Asset Management IncHedge fund | 6.1% | $8.7M | 430,407 | +0.0% shares | Q2 2026 |
| KCM Capital IncAsset manager | 1.0% | $6.1M | 300,000 | +757.1% shares | Q2 2026 |
| Roubaix Capital, LLCHedge fund | 1.9% | $5.2M | 255,288 | -0.7% shares | Q2 2026 |
| CM Management, LLCHedge fund | 1.9% | $2.9M | 145,000 | +45.0% shares | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 4). Screen SI in the grand portfolio →
SI stock trades by members of Congress
Members of Congress have disclosed 5 SI trades since 2013, 2 purchases and 1 sale in the past year; the latest was Chris Jacobs (R-NY), selling $1K–15K on Nov 8, 2022.
| Filed | Member | Trade | Amount | Traded | Since |
|---|---|---|---|---|---|
| Dec 12, 2022 | Chris JacobsR-NY · House | Sale | $1K–15K | Nov 8, 2022 | — |
| Sep 9, 2022 | Chris JacobsR-NY · House | Buy | $1K–15K | Jul 18, 2022 | — |
| Feb 3, 2022 | Thomas R. CarperD-DE · Senate | Buy | $1K–15K | Jan 31, 2022 | — |
| May 17, 2021 | Thomas R. CarperD-DE · Senate | Buy | $1K–15K | Nov 20, 2020 | — |
| Apr 15, 2015 | Rubén HinojosaD-TX · House | Sale | $1K–15K | Sep 20, 2013 | — |
3 members have traded SI: Chris Jacobs, Thomas R. Carper, Rubén Hinojosa.
SI questions and answers
Are insiders buying SI stock?
Between Aug 1, 2026 and Oct 29, 2026, 3 SI insiders filed 7 sales worth $5.1M on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
Which hedge funds own SI?
4 13F filers hold SI among their 50 largest positions, worth $22.9M combined. The biggest bets by portfolio weight are Sectoral Asset Management Inc (6.1%), CM Management, LLC (1.9%) and Roubaix Capital, LLC (1.9%). In their latest 13Fs, 0 managers opened a new position and 2 added to one.
Has Congress traded SI?
Members of Congress have disclosed 5 SI trades since 2013, 2 purchases and 1 sale in the past year; the latest was Chris Jacobs (R-NY), selling $1K–15K on Nov 8, 2022.
Who is the largest holder of SI?
Among 13F filers, Sectoral Asset Management Inc reports the largest SI position, $8.7M (430,407 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Sectoral Asset Management Inc's: 6.1% of its portfolio.
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