SHOULDER INNOVATIONS, INC. (SI) Insider Trading
Over the last 3 months, SI insiders made 0 open-market buys and 16 sales, a net sale of -$5.3M (SEC Form 4). Over the last 6 months, 23 institutions increased and 10 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
16
Net (3m)
-$5.3M
Insider trades by month Buys Sells
Apr
Jul
Dec
Mar
Jun
Aug
Context3-month price +48.4%Institutions reducing (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 28, 2026 | Gilde Healthcare Holding B.V.10 percent owner | Sell | 1,196 | $22.60 |
| Aug 24, 2026 | Gilde Healthcare Holding B.V.10 percent owner | Sell | 681 | $22.62 |
| Aug 24, 2026 | Gilde Healthcare Holding B.V.10 percent owner | Sell | 3,900 | $22.60 |
| Aug 24, 2026 | Gilde Healthcare Holding B.V.10 percent owner | Sell | 20,516 | $22.61 |
| Aug 18, 2026 | Ahearn Matthew Fraserdirector, officer: Chief Operating Officer | Sell | 8,314 | $20.10 |
| Aug 18, 2026 | Ahearn Matthew Fraserdirector, officer: Chief Operating Officer | Sell | 1,600 | $21.38 |
| Aug 18, 2026 | Ahearn Matthew Fraserdirector, officer: Chief Operating Officer | Sell | 12,586 | $20.94 |
| Aug 7, 2026 | Gilde Healthcare Holding B.V.10 percent owner | Sell | 7,338 | $22.64 |
| Aug 7, 2026 | Gilde Healthcare Holding B.V.10 percent owner | Sell | 2,095 | $22.60 |
| Aug 5, 2026 | Gilde Healthcare Holding B.V.10 percent owner | Sell | 99,812 | $22.77 |
| Aug 5, 2026 | Gilde Healthcare Holding B.V.10 percent owner | Sell | 10,751 | $22.71 |
| Aug 3, 2026 | Gilde Healthcare Holding B.V.10 percent owner | Sell | 28,245 | $23.36 |
| Aug 3, 2026 | Gilde Healthcare Holding B.V.10 percent owner | Sell | 20,034 | $22.73 |
| Jun 29, 2026 | BUCKMAN PAULdirector | Grant | 5,046 | — |
| Jun 29, 2026 | Buchholz Richarddirector | Grant | 5,046 | — |
| Jun 29, 2026 | Hykes Andrewdirector | Grant | 5,046 | — |
| Jun 29, 2026 | Sidow Kevin K.director | Grant | 5,046 | — |
| Jun 29, 2026 | Tansey Casey Mdirector, 10 percent owner: | Grant | 5,046 | — |
| Jun 16, 2026 | Ahearn Matthew Fraserdirector, officer: Chief Operating Officer | Sell | 15,856 | $18.68 |
| Jun 16, 2026 | Ahearn Matthew Fraserdirector, officer: Chief Operating Officer | Sell | 1,644 | $18.20 |
| Jun 16, 2026 | Ahearn Matthew Fraserdirector, officer: Chief Operating Officer | Sell | 2,500 | $19.26 |
| Apr 30, 2026 | Ball Robert Josephdirector, officer: CEO & Executive Chairman | Option | 10,000 | $2.48 |
| Apr 21, 2026 | Ahearn Matthew Fraserdirector, officer: Chief Operating Officer | Option | 7,421 | $2.48 |
| Apr 21, 2026 | Ahearn Matthew Fraserdirector, officer: Chief Operating Officer | Option | 14,243 | $2.86 |
| Mar 17, 2026 | Ball Robert Josephdirector, officer: CEO & Executive Chairman | Buy | 2,200 | $15.18 |
| Mar 17, 2026 | BUCKMAN PAULdirector | Option | 26,205 | $2.10 |
| Mar 17, 2026 | BUCKMAN PAULdirector | Tax | 3,292 | $14.62 |
| Mar 17, 2026 | Points Jeffrey S.officer: Chief Financial Officer | Option | 13,264 | $2.48 |
| Mar 17, 2026 | Buchholz Richarddirector | Buy | 1,000 | $14.84 |
| Mar 17, 2026 | Points Jeffrey S.officer: Chief Financial Officer | Buy | 2,000 | $15.00 |
Source: SI SEC Form 4 filings, latest Aug 28, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their SI positions over the last 6 months (SEC Form 13F).
Increased
23
New positions
16
Reduced
10
Sold out
57
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| FMR LLC | Reduced | 3.8M | May 15, 2026 |
| BLACKROCK, INC. | Increased | 556K | May 13, 2026 |
| SECTORAL ASSET MANAGEMENT INC | Reduced | 430K | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 413K | May 15, 2026 |
| TIMESSQUARE CAPITAL MANAGEMENT, LLC | Increased | 323K | May 7, 2026 |
| ROUBAIX CAPITAL, LLC | Increased | 257K | May 6, 2026 |
| ALYESKA INVESTMENT GROUP, L.P. | Unchanged | 233K | May 15, 2026 |
| SIO CAPITAL MANAGEMENT, LLC | Reduced | 211K | May 14, 2026 |
| MILLENNIUM MANAGEMENT LLC | Increased | 194K | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 184K | May 15, 2026 |
| MORGAN STANLEY | Reduced | 158K | May 15, 2026 |
| JPMORGAN CHASE & CO | Increased | 131K | May 13, 2026 |
| CM MANAGEMENT, LLC | Increased | 100K | May 8, 2026 |
| STATE STREET CORP | Increased | 93K | May 15, 2026 |
| WALLEYE CAPITAL LLC | Reduced | 85K | May 13, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.