SHOULDER INNOVATIONS, INC. (SI) Insider Trading
Over the last 3 months, SI insiders made 3 open-market buys and 0 sales, a net purchase of $78K (SEC Form 4). Multiple insiders bought within days of each other (cluster buying). Over the last 6 months, 36 institutions increased and 25 reduced their position (13F).
Insider Activity
Sentiment
100/100
Buys (3m)
3
Sells (3m)
0
Net (3m)
$78.2K
Insiders buyingCluster buying
Insider trades by month Buys Sells
Nov
Feb
Apr
Jul
Dec
Mar
Context3-month price +5.5%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| 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 | 14,243 | $2.86 |
| Apr 21, 2026 | Ahearn Matthew Fraserdirector, officer: Chief Operating Officer | Option | 7,421 | $2.48 |
| Mar 17, 2026 | Buchholz Richarddirector | Buy | 1,000 | $14.84 |
| Mar 17, 2026 | Points Jeffrey S.officer: Chief Financial Officer | Option | 13,264 | $2.48 |
| Mar 17, 2026 | BUCKMAN PAULdirector | Tax | 3,292 | $14.62 |
| Mar 17, 2026 | Points Jeffrey S.officer: Chief Financial Officer | Buy | 2,000 | $15.00 |
| Mar 17, 2026 | BUCKMAN PAULdirector | Tax | 3,714 | $14.82 |
| 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 | Option | 19,401 | $2.48 |
| Feb 10, 2026 | Ball Robert Josephdirector, officer: CEO & Executive Chairman | Option | 10,000 | $2.48 |
| Feb 10, 2026 | Ball Robert Josephdirector, officer: CEO & Executive Chairman | Option | 2,062 | $2.10 |
| Feb 3, 2026 | Ahearn Matthew Fraserdirector, officer: Chief Operating Officer | Grant | 88,450 | $14.16 |
| Feb 3, 2026 | Points Jeffrey S.officer: Chief Financial Officer | Grant | 126,357 | $14.16 |
| Feb 3, 2026 | Ball Robert Josephdirector, officer: CEO & Executive Chairman | Grant | 265,351 | $14.16 |
| Feb 3, 2026 | Blue David Lawrenceofficer: See Remarks | Grant | 88,450 | $14.16 |
| Jan 8, 2026 | Ahearn Matthew Fraserdirector, officer: Chief Operating Officer | Grant | 477 | $12.16 |
| Jan 8, 2026 | Blue David Lawrenceofficer: See Remarks | Grant | 1,041 | $12.16 |
| Jan 8, 2026 | Ball Robert Josephdirector, officer: CEO & Executive Chairman | Grant | 1,661 | $12.16 |
| Jan 8, 2026 | Points Jeffrey S.officer: Chief Financial Officer | Grant | 1,076 | $12.16 |
| Dec 15, 2025 | Ball Robert Josephdirector, officer: CEO & Executive Chairman | Buy | 3,300 | $14.83 |
| Dec 15, 2025 | Points Jeffrey S.officer: Chief Financial Officer | Buy | 995 | $14.65 |
| Dec 15, 2025 | Points Jeffrey S.officer: Chief Financial Officer | Buy | 1,005 | $14.98 |
| Dec 15, 2025 | Ball Robert Josephdirector, officer: CEO & Executive Chairman | Buy | 3,900 | $14.89 |
| Nov 21, 2023 | Fraher Kathleenofficer: Chief Transition Officer | Tax | 491 | $0.30 |
| Nov 21, 2023 | Fraher Kathleenofficer: Chief Transition Officer | Option | 1,203 | — |
| Jun 12, 2023 | Brassfield Karen F.director | Option | 1,013 | — |
| Jun 12, 2023 | Lempres Michaeldirector | Option | 1,013 | — |
| Jun 12, 2023 | DIRCKS THOMAS Cdirector | Grant | 1,013 | — |
Source: SI SEC Form 4 filings, latest Apr 30, 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
36
New positions
29
Reduced
25
Sold out
12
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| FMR LLC | Unchanged | 3.8M | Feb 17, 2026 |
| FMR LLC | Reduced | 3.8M | May 15, 2026 |
| BLACKROCK, INC. | Increased | 556K | May 13, 2026 |
| SECTORAL ASSET MANAGEMENT INC | Increased | 492K | Feb 9, 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 |
| BLACKROCK, INC. | Increased | 311K | Feb 12, 2026 |
| TIMESSQUARE CAPITAL MANAGEMENT, LLC | Reduced | 290K | Feb 6, 2026 |
| ROUBAIX CAPITAL, LLC | Increased | 257K | May 6, 2026 |
| ALYESKA INVESTMENT GROUP, L.P. | Unchanged | 233K | May 15, 2026 |
| ALYESKA INVESTMENT GROUP, L.P. | Reduced | 233K | Feb 13, 2026 |
| SIO CAPITAL MANAGEMENT, LLC | Reduced | 228K | Feb 17, 2026 |
| VANGUARD GROUP INC | Increased | 220K | Jan 29, 2026 |
| SIO CAPITAL MANAGEMENT, LLC | Reduced | 211K | May 14, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.